diff options
Diffstat (limited to 'libxml2-2.9.10/relaxng.c')
| -rw-r--r-- | libxml2-2.9.10/relaxng.c | 11101 |
1 files changed, 11101 insertions, 0 deletions
diff --git a/libxml2-2.9.10/relaxng.c b/libxml2-2.9.10/relaxng.c new file mode 100644 index 0000000..13fd954 --- /dev/null +++ b/libxml2-2.9.10/relaxng.c @@ -0,0 +1,11101 @@ +/* + * relaxng.c : implementation of the Relax-NG handling and validity checking + * + * See Copyright for the status of this software. + * + * Daniel Veillard <veillard@redhat.com> + */ + +/** + * TODO: + * - add support for DTD compatibility spec + * http://www.oasis-open.org/committees/relax-ng/compatibility-20011203.html + * - report better mem allocations pbms at runtime and abort immediately. + */ + +#define IN_LIBXML +#include "libxml.h" + +#ifdef LIBXML_SCHEMAS_ENABLED + +#include <string.h> +#include <stdio.h> +#include <stddef.h> +#include <libxml/xmlmemory.h> +#include <libxml/parser.h> +#include <libxml/parserInternals.h> +#include <libxml/hash.h> +#include <libxml/uri.h> + +#include <libxml/relaxng.h> + +#include <libxml/xmlschemastypes.h> +#include <libxml/xmlautomata.h> +#include <libxml/xmlregexp.h> +#include <libxml/xmlschemastypes.h> + +/* + * The Relax-NG namespace + */ +static const xmlChar *xmlRelaxNGNs = (const xmlChar *) + "http://relaxng.org/ns/structure/1.0"; + +#define IS_RELAXNG(node, typ) \ + ((node != NULL) && (node->ns != NULL) && \ + (node->type == XML_ELEMENT_NODE) && \ + (xmlStrEqual(node->name, (const xmlChar *) typ)) && \ + (xmlStrEqual(node->ns->href, xmlRelaxNGNs))) + + +#if 0 +#define DEBUG 1 + +#define DEBUG_GRAMMAR 1 + +#define DEBUG_CONTENT 1 + +#define DEBUG_TYPE 1 + +#define DEBUG_VALID 1 + +#define DEBUG_INTERLEAVE 1 + +#define DEBUG_LIST 1 + +#define DEBUG_INCLUDE 1 + +#define DEBUG_ERROR 1 + +#define DEBUG_COMPILE 1 + +#define DEBUG_PROGRESSIVE 1 +#endif + +#define MAX_ERROR 5 + +#define TODO \ + xmlGenericError(xmlGenericErrorContext, \ + "Unimplemented block at %s:%d\n", \ + __FILE__, __LINE__); + +typedef struct _xmlRelaxNGSchema xmlRelaxNGSchema; +typedef xmlRelaxNGSchema *xmlRelaxNGSchemaPtr; + +typedef struct _xmlRelaxNGDefine xmlRelaxNGDefine; +typedef xmlRelaxNGDefine *xmlRelaxNGDefinePtr; + +typedef struct _xmlRelaxNGDocument xmlRelaxNGDocument; +typedef xmlRelaxNGDocument *xmlRelaxNGDocumentPtr; + +typedef struct _xmlRelaxNGInclude xmlRelaxNGInclude; +typedef xmlRelaxNGInclude *xmlRelaxNGIncludePtr; + +typedef enum { + XML_RELAXNG_COMBINE_UNDEFINED = 0, /* undefined */ + XML_RELAXNG_COMBINE_CHOICE, /* choice */ + XML_RELAXNG_COMBINE_INTERLEAVE /* interleave */ +} xmlRelaxNGCombine; + +typedef enum { + XML_RELAXNG_CONTENT_ERROR = -1, + XML_RELAXNG_CONTENT_EMPTY = 0, + XML_RELAXNG_CONTENT_SIMPLE, + XML_RELAXNG_CONTENT_COMPLEX +} xmlRelaxNGContentType; + +typedef struct _xmlRelaxNGGrammar xmlRelaxNGGrammar; +typedef xmlRelaxNGGrammar *xmlRelaxNGGrammarPtr; + +struct _xmlRelaxNGGrammar { + xmlRelaxNGGrammarPtr parent; /* the parent grammar if any */ + xmlRelaxNGGrammarPtr children; /* the children grammar if any */ + xmlRelaxNGGrammarPtr next; /* the next grammar if any */ + xmlRelaxNGDefinePtr start; /* <start> content */ + xmlRelaxNGCombine combine; /* the default combine value */ + xmlRelaxNGDefinePtr startList; /* list of <start> definitions */ + xmlHashTablePtr defs; /* define* */ + xmlHashTablePtr refs; /* references */ +}; + + +typedef enum { + XML_RELAXNG_NOOP = -1, /* a no operation from simplification */ + XML_RELAXNG_EMPTY = 0, /* an empty pattern */ + XML_RELAXNG_NOT_ALLOWED, /* not allowed top */ + XML_RELAXNG_EXCEPT, /* except present in nameclass defs */ + XML_RELAXNG_TEXT, /* textual content */ + XML_RELAXNG_ELEMENT, /* an element */ + XML_RELAXNG_DATATYPE, /* external data type definition */ + XML_RELAXNG_PARAM, /* external data type parameter */ + XML_RELAXNG_VALUE, /* value from an external data type definition */ + XML_RELAXNG_LIST, /* a list of patterns */ + XML_RELAXNG_ATTRIBUTE, /* an attribute following a pattern */ + XML_RELAXNG_DEF, /* a definition */ + XML_RELAXNG_REF, /* reference to a definition */ + XML_RELAXNG_EXTERNALREF, /* reference to an external def */ + XML_RELAXNG_PARENTREF, /* reference to a def in the parent grammar */ + XML_RELAXNG_OPTIONAL, /* optional patterns */ + XML_RELAXNG_ZEROORMORE, /* zero or more non empty patterns */ + XML_RELAXNG_ONEORMORE, /* one or more non empty patterns */ + XML_RELAXNG_CHOICE, /* a choice between non empty patterns */ + XML_RELAXNG_GROUP, /* a pair/group of non empty patterns */ + XML_RELAXNG_INTERLEAVE, /* interleaving choice of non-empty patterns */ + XML_RELAXNG_START /* Used to keep track of starts on grammars */ +} xmlRelaxNGType; + +#define IS_NULLABLE (1 << 0) +#define IS_NOT_NULLABLE (1 << 1) +#define IS_INDETERMINIST (1 << 2) +#define IS_MIXED (1 << 3) +#define IS_TRIABLE (1 << 4) +#define IS_PROCESSED (1 << 5) +#define IS_COMPILABLE (1 << 6) +#define IS_NOT_COMPILABLE (1 << 7) +#define IS_EXTERNAL_REF (1 << 8) + +struct _xmlRelaxNGDefine { + xmlRelaxNGType type; /* the type of definition */ + xmlNodePtr node; /* the node in the source */ + xmlChar *name; /* the element local name if present */ + xmlChar *ns; /* the namespace local name if present */ + xmlChar *value; /* value when available */ + void *data; /* data lib or specific pointer */ + xmlRelaxNGDefinePtr content; /* the expected content */ + xmlRelaxNGDefinePtr parent; /* the parent definition, if any */ + xmlRelaxNGDefinePtr next; /* list within grouping sequences */ + xmlRelaxNGDefinePtr attrs; /* list of attributes for elements */ + xmlRelaxNGDefinePtr nameClass; /* the nameClass definition if any */ + xmlRelaxNGDefinePtr nextHash; /* next define in defs/refs hash tables */ + short depth; /* used for the cycle detection */ + short dflags; /* define related flags */ + xmlRegexpPtr contModel; /* a compiled content model if available */ +}; + +/** + * _xmlRelaxNG: + * + * A RelaxNGs definition + */ +struct _xmlRelaxNG { + void *_private; /* unused by the library for users or bindings */ + xmlRelaxNGGrammarPtr topgrammar; + xmlDocPtr doc; + + int idref; /* requires idref checking */ + + xmlHashTablePtr defs; /* define */ + xmlHashTablePtr refs; /* references */ + xmlRelaxNGDocumentPtr documents; /* all the documents loaded */ + xmlRelaxNGIncludePtr includes; /* all the includes loaded */ + int defNr; /* number of defines used */ + xmlRelaxNGDefinePtr *defTab; /* pointer to the allocated definitions */ + +}; + +#define XML_RELAXNG_IN_ATTRIBUTE (1 << 0) +#define XML_RELAXNG_IN_ONEORMORE (1 << 1) +#define XML_RELAXNG_IN_LIST (1 << 2) +#define XML_RELAXNG_IN_DATAEXCEPT (1 << 3) +#define XML_RELAXNG_IN_START (1 << 4) +#define XML_RELAXNG_IN_OOMGROUP (1 << 5) +#define XML_RELAXNG_IN_OOMINTERLEAVE (1 << 6) +#define XML_RELAXNG_IN_EXTERNALREF (1 << 7) +#define XML_RELAXNG_IN_ANYEXCEPT (1 << 8) +#define XML_RELAXNG_IN_NSEXCEPT (1 << 9) + +struct _xmlRelaxNGParserCtxt { + void *userData; /* user specific data block */ + xmlRelaxNGValidityErrorFunc error; /* the callback in case of errors */ + xmlRelaxNGValidityWarningFunc warning; /* the callback in case of warning */ + xmlStructuredErrorFunc serror; + xmlRelaxNGValidErr err; + + xmlRelaxNGPtr schema; /* The schema in use */ + xmlRelaxNGGrammarPtr grammar; /* the current grammar */ + xmlRelaxNGGrammarPtr parentgrammar; /* the parent grammar */ + int flags; /* parser flags */ + int nbErrors; /* number of errors at parse time */ + int nbWarnings; /* number of warnings at parse time */ + const xmlChar *define; /* the current define scope */ + xmlRelaxNGDefinePtr def; /* the current define */ + + int nbInterleaves; + xmlHashTablePtr interleaves; /* keep track of all the interleaves */ + + xmlRelaxNGDocumentPtr documents; /* all the documents loaded */ + xmlRelaxNGIncludePtr includes; /* all the includes loaded */ + xmlChar *URL; + xmlDocPtr document; + + int defNr; /* number of defines used */ + int defMax; /* number of defines allocated */ + xmlRelaxNGDefinePtr *defTab; /* pointer to the allocated definitions */ + + const char *buffer; + int size; + + /* the document stack */ + xmlRelaxNGDocumentPtr doc; /* Current parsed external ref */ + int docNr; /* Depth of the parsing stack */ + int docMax; /* Max depth of the parsing stack */ + xmlRelaxNGDocumentPtr *docTab; /* array of docs */ + + /* the include stack */ + xmlRelaxNGIncludePtr inc; /* Current parsed include */ + int incNr; /* Depth of the include parsing stack */ + int incMax; /* Max depth of the parsing stack */ + xmlRelaxNGIncludePtr *incTab; /* array of incs */ + + int idref; /* requires idref checking */ + + /* used to compile content models */ + xmlAutomataPtr am; /* the automata */ + xmlAutomataStatePtr state; /* used to build the automata */ + + int crng; /* compact syntax and other flags */ + int freedoc; /* need to free the document */ +}; + +#define FLAGS_IGNORABLE 1 +#define FLAGS_NEGATIVE 2 +#define FLAGS_MIXED_CONTENT 4 +#define FLAGS_NOERROR 8 + +/** + * xmlRelaxNGInterleaveGroup: + * + * A RelaxNGs partition set associated to lists of definitions + */ +typedef struct _xmlRelaxNGInterleaveGroup xmlRelaxNGInterleaveGroup; +typedef xmlRelaxNGInterleaveGroup *xmlRelaxNGInterleaveGroupPtr; +struct _xmlRelaxNGInterleaveGroup { + xmlRelaxNGDefinePtr rule; /* the rule to satisfy */ + xmlRelaxNGDefinePtr *defs; /* the array of element definitions */ + xmlRelaxNGDefinePtr *attrs; /* the array of attributes definitions */ +}; + +#define IS_DETERMINIST 1 +#define IS_NEEDCHECK 2 + +/** + * xmlRelaxNGPartitions: + * + * A RelaxNGs partition associated to an interleave group + */ +typedef struct _xmlRelaxNGPartition xmlRelaxNGPartition; +typedef xmlRelaxNGPartition *xmlRelaxNGPartitionPtr; +struct _xmlRelaxNGPartition { + int nbgroups; /* number of groups in the partitions */ + xmlHashTablePtr triage; /* hash table used to direct nodes to the + * right group when possible */ + int flags; /* determinist ? */ + xmlRelaxNGInterleaveGroupPtr *groups; +}; + +/** + * xmlRelaxNGValidState: + * + * A RelaxNGs validation state + */ +#define MAX_ATTR 20 +typedef struct _xmlRelaxNGValidState xmlRelaxNGValidState; +typedef xmlRelaxNGValidState *xmlRelaxNGValidStatePtr; +struct _xmlRelaxNGValidState { + xmlNodePtr node; /* the current node */ + xmlNodePtr seq; /* the sequence of children left to validate */ + int nbAttrs; /* the number of attributes */ + int maxAttrs; /* the size of attrs */ + int nbAttrLeft; /* the number of attributes left to validate */ + xmlChar *value; /* the value when operating on string */ + xmlChar *endvalue; /* the end value when operating on string */ + xmlAttrPtr *attrs; /* the array of attributes */ +}; + +/** + * xmlRelaxNGStates: + * + * A RelaxNGs container for validation state + */ +typedef struct _xmlRelaxNGStates xmlRelaxNGStates; +typedef xmlRelaxNGStates *xmlRelaxNGStatesPtr; +struct _xmlRelaxNGStates { + int nbState; /* the number of states */ + int maxState; /* the size of the array */ + xmlRelaxNGValidStatePtr *tabState; +}; + +#define ERROR_IS_DUP 1 + +/** + * xmlRelaxNGValidError: + * + * A RelaxNGs validation error + */ +typedef struct _xmlRelaxNGValidError xmlRelaxNGValidError; +typedef xmlRelaxNGValidError *xmlRelaxNGValidErrorPtr; +struct _xmlRelaxNGValidError { + xmlRelaxNGValidErr err; /* the error number */ + int flags; /* flags */ + xmlNodePtr node; /* the current node */ + xmlNodePtr seq; /* the current child */ + const xmlChar *arg1; /* first arg */ + const xmlChar *arg2; /* second arg */ +}; + +/** + * xmlRelaxNGValidCtxt: + * + * A RelaxNGs validation context + */ + +struct _xmlRelaxNGValidCtxt { + void *userData; /* user specific data block */ + xmlRelaxNGValidityErrorFunc error; /* the callback in case of errors */ + xmlRelaxNGValidityWarningFunc warning; /* the callback in case of warning */ + xmlStructuredErrorFunc serror; + int nbErrors; /* number of errors in validation */ + + xmlRelaxNGPtr schema; /* The schema in use */ + xmlDocPtr doc; /* the document being validated */ + int flags; /* validation flags */ + int depth; /* validation depth */ + int idref; /* requires idref checking */ + int errNo; /* the first error found */ + + /* + * Errors accumulated in branches may have to be stacked to be + * provided back when it's sure they affect validation. + */ + xmlRelaxNGValidErrorPtr err; /* Last error */ + int errNr; /* Depth of the error stack */ + int errMax; /* Max depth of the error stack */ + xmlRelaxNGValidErrorPtr errTab; /* stack of errors */ + + xmlRelaxNGValidStatePtr state; /* the current validation state */ + xmlRelaxNGStatesPtr states; /* the accumulated state list */ + + xmlRelaxNGStatesPtr freeState; /* the pool of free valid states */ + int freeStatesNr; + int freeStatesMax; + xmlRelaxNGStatesPtr *freeStates; /* the pool of free state groups */ + + /* + * This is used for "progressive" validation + */ + xmlRegExecCtxtPtr elem; /* the current element regexp */ + int elemNr; /* the number of element validated */ + int elemMax; /* the max depth of elements */ + xmlRegExecCtxtPtr *elemTab; /* the stack of regexp runtime */ + int pstate; /* progressive state */ + xmlNodePtr pnode; /* the current node */ + xmlRelaxNGDefinePtr pdef; /* the non-streamable definition */ + int perr; /* signal error in content model + * outside the regexp */ +}; + +/** + * xmlRelaxNGInclude: + * + * Structure associated to a RelaxNGs document element + */ +struct _xmlRelaxNGInclude { + xmlRelaxNGIncludePtr next; /* keep a chain of includes */ + xmlChar *href; /* the normalized href value */ + xmlDocPtr doc; /* the associated XML document */ + xmlRelaxNGDefinePtr content; /* the definitions */ + xmlRelaxNGPtr schema; /* the schema */ +}; + +/** + * xmlRelaxNGDocument: + * + * Structure associated to a RelaxNGs document element + */ +struct _xmlRelaxNGDocument { + xmlRelaxNGDocumentPtr next; /* keep a chain of documents */ + xmlChar *href; /* the normalized href value */ + xmlDocPtr doc; /* the associated XML document */ + xmlRelaxNGDefinePtr content; /* the definitions */ + xmlRelaxNGPtr schema; /* the schema */ + int externalRef; /* 1 if an external ref */ +}; + + +/************************************************************************ + * * + * Some factorized error routines * + * * + ************************************************************************/ + +/** + * xmlRngPErrMemory: + * @ctxt: an Relax-NG parser context + * @extra: extra informations + * + * Handle a redefinition of attribute error + */ +static void +xmlRngPErrMemory(xmlRelaxNGParserCtxtPtr ctxt, const char *extra) +{ + xmlStructuredErrorFunc schannel = NULL; + xmlGenericErrorFunc channel = NULL; + void *data = NULL; + + if (ctxt != NULL) { + if (ctxt->serror != NULL) + schannel = ctxt->serror; + else + channel = ctxt->error; + data = ctxt->userData; + ctxt->nbErrors++; + } + if (extra) + __xmlRaiseError(schannel, channel, data, + NULL, NULL, XML_FROM_RELAXNGP, + XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra, + NULL, NULL, 0, 0, + "Memory allocation failed : %s\n", extra); + else + __xmlRaiseError(schannel, channel, data, + NULL, NULL, XML_FROM_RELAXNGP, + XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL, + NULL, NULL, 0, 0, "Memory allocation failed\n"); +} + +/** + * xmlRngVErrMemory: + * @ctxt: a Relax-NG validation context + * @extra: extra informations + * + * Handle a redefinition of attribute error + */ +static void +xmlRngVErrMemory(xmlRelaxNGValidCtxtPtr ctxt, const char *extra) +{ + xmlStructuredErrorFunc schannel = NULL; + xmlGenericErrorFunc channel = NULL; + void *data = NULL; + + if (ctxt != NULL) { + if (ctxt->serror != NULL) + schannel = ctxt->serror; + else + channel = ctxt->error; + data = ctxt->userData; + ctxt->nbErrors++; + } + if (extra) + __xmlRaiseError(schannel, channel, data, + NULL, NULL, XML_FROM_RELAXNGV, + XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra, + NULL, NULL, 0, 0, + "Memory allocation failed : %s\n", extra); + else + __xmlRaiseError(schannel, channel, data, + NULL, NULL, XML_FROM_RELAXNGV, + XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL, + NULL, NULL, 0, 0, "Memory allocation failed\n"); +} + +/** + * xmlRngPErr: + * @ctxt: a Relax-NG parser context + * @node: the node raising the error + * @error: the error code + * @msg: message + * @str1: extra info + * @str2: extra info + * + * Handle a Relax NG Parsing error + */ +static void LIBXML_ATTR_FORMAT(4,0) +xmlRngPErr(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node, int error, + const char *msg, const xmlChar * str1, const xmlChar * str2) +{ + xmlStructuredErrorFunc schannel = NULL; + xmlGenericErrorFunc channel = NULL; + void *data = NULL; + + if (ctxt != NULL) { + if (ctxt->serror != NULL) + schannel = ctxt->serror; + else + channel = ctxt->error; + data = ctxt->userData; + ctxt->nbErrors++; + } + __xmlRaiseError(schannel, channel, data, + NULL, node, XML_FROM_RELAXNGP, + error, XML_ERR_ERROR, NULL, 0, + (const char *) str1, (const char *) str2, NULL, 0, 0, + msg, str1, str2); +} + +/** + * xmlRngVErr: + * @ctxt: a Relax-NG validation context + * @node: the node raising the error + * @error: the error code + * @msg: message + * @str1: extra info + * @str2: extra info + * + * Handle a Relax NG Validation error + */ +static void LIBXML_ATTR_FORMAT(4,0) +xmlRngVErr(xmlRelaxNGValidCtxtPtr ctxt, xmlNodePtr node, int error, + const char *msg, const xmlChar * str1, const xmlChar * str2) +{ + xmlStructuredErrorFunc schannel = NULL; + xmlGenericErrorFunc channel = NULL; + void *data = NULL; + + if (ctxt != NULL) { + if (ctxt->serror != NULL) + schannel = ctxt->serror; + else + channel = ctxt->error; + data = ctxt->userData; + ctxt->nbErrors++; + } + __xmlRaiseError(schannel, channel, data, + NULL, node, XML_FROM_RELAXNGV, + error, XML_ERR_ERROR, NULL, 0, + (const char *) str1, (const char *) str2, NULL, 0, 0, + msg, str1, str2); +} + +/************************************************************************ + * * + * Preliminary type checking interfaces * + * * + ************************************************************************/ + +/** + * xmlRelaxNGTypeHave: + * @data: data needed for the library + * @type: the type name + * @value: the value to check + * + * Function provided by a type library to check if a type is exported + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +typedef int (*xmlRelaxNGTypeHave) (void *data, const xmlChar * type); + +/** + * xmlRelaxNGTypeCheck: + * @data: data needed for the library + * @type: the type name + * @value: the value to check + * @result: place to store the result if needed + * + * Function provided by a type library to check if a value match a type + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +typedef int (*xmlRelaxNGTypeCheck) (void *data, const xmlChar * type, + const xmlChar * value, void **result, + xmlNodePtr node); + +/** + * xmlRelaxNGFacetCheck: + * @data: data needed for the library + * @type: the type name + * @facet: the facet name + * @val: the facet value + * @strval: the string value + * @value: the value to check + * + * Function provided by a type library to check a value facet + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +typedef int (*xmlRelaxNGFacetCheck) (void *data, const xmlChar * type, + const xmlChar * facet, + const xmlChar * val, + const xmlChar * strval, void *value); + +/** + * xmlRelaxNGTypeFree: + * @data: data needed for the library + * @result: the value to free + * + * Function provided by a type library to free a returned result + */ +typedef void (*xmlRelaxNGTypeFree) (void *data, void *result); + +/** + * xmlRelaxNGTypeCompare: + * @data: data needed for the library + * @type: the type name + * @value1: the first value + * @value2: the second value + * + * Function provided by a type library to compare two values accordingly + * to a type. + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +typedef int (*xmlRelaxNGTypeCompare) (void *data, const xmlChar * type, + const xmlChar * value1, + xmlNodePtr ctxt1, + void *comp1, + const xmlChar * value2, + xmlNodePtr ctxt2); +typedef struct _xmlRelaxNGTypeLibrary xmlRelaxNGTypeLibrary; +typedef xmlRelaxNGTypeLibrary *xmlRelaxNGTypeLibraryPtr; +struct _xmlRelaxNGTypeLibrary { + const xmlChar *namespace; /* the datatypeLibrary value */ + void *data; /* data needed for the library */ + xmlRelaxNGTypeHave have; /* the export function */ + xmlRelaxNGTypeCheck check; /* the checking function */ + xmlRelaxNGTypeCompare comp; /* the compare function */ + xmlRelaxNGFacetCheck facet; /* the facet check function */ + xmlRelaxNGTypeFree freef; /* the freeing function */ +}; + +/************************************************************************ + * * + * Allocation functions * + * * + ************************************************************************/ +static void xmlRelaxNGFreeGrammar(xmlRelaxNGGrammarPtr grammar); +static void xmlRelaxNGFreeDefine(xmlRelaxNGDefinePtr define); +static void xmlRelaxNGNormExtSpace(xmlChar * value); +static void xmlRelaxNGFreeInnerSchema(xmlRelaxNGPtr schema); +static int xmlRelaxNGEqualValidState(xmlRelaxNGValidCtxtPtr ctxt + ATTRIBUTE_UNUSED, + xmlRelaxNGValidStatePtr state1, + xmlRelaxNGValidStatePtr state2); +static void xmlRelaxNGFreeValidState(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidStatePtr state); + +/** + * xmlRelaxNGFreeDocument: + * @docu: a document structure + * + * Deallocate a RelaxNG document structure. + */ +static void +xmlRelaxNGFreeDocument(xmlRelaxNGDocumentPtr docu) +{ + if (docu == NULL) + return; + + if (docu->href != NULL) + xmlFree(docu->href); + if (docu->doc != NULL) + xmlFreeDoc(docu->doc); + if (docu->schema != NULL) + xmlRelaxNGFreeInnerSchema(docu->schema); + xmlFree(docu); +} + +/** + * xmlRelaxNGFreeDocumentList: + * @docu: a list of document structure + * + * Deallocate a RelaxNG document structures. + */ +static void +xmlRelaxNGFreeDocumentList(xmlRelaxNGDocumentPtr docu) +{ + xmlRelaxNGDocumentPtr next; + + while (docu != NULL) { + next = docu->next; + xmlRelaxNGFreeDocument(docu); + docu = next; + } +} + +/** + * xmlRelaxNGFreeInclude: + * @incl: a include structure + * + * Deallocate a RelaxNG include structure. + */ +static void +xmlRelaxNGFreeInclude(xmlRelaxNGIncludePtr incl) +{ + if (incl == NULL) + return; + + if (incl->href != NULL) + xmlFree(incl->href); + if (incl->doc != NULL) + xmlFreeDoc(incl->doc); + if (incl->schema != NULL) + xmlRelaxNGFree(incl->schema); + xmlFree(incl); +} + +/** + * xmlRelaxNGFreeIncludeList: + * @incl: a include structure list + * + * Deallocate a RelaxNG include structure. + */ +static void +xmlRelaxNGFreeIncludeList(xmlRelaxNGIncludePtr incl) +{ + xmlRelaxNGIncludePtr next; + + while (incl != NULL) { + next = incl->next; + xmlRelaxNGFreeInclude(incl); + incl = next; + } +} + +/** + * xmlRelaxNGNewRelaxNG: + * @ctxt: a Relax-NG validation context (optional) + * + * Allocate a new RelaxNG structure. + * + * Returns the newly allocated structure or NULL in case or error + */ +static xmlRelaxNGPtr +xmlRelaxNGNewRelaxNG(xmlRelaxNGParserCtxtPtr ctxt) +{ + xmlRelaxNGPtr ret; + + ret = (xmlRelaxNGPtr) xmlMalloc(sizeof(xmlRelaxNG)); + if (ret == NULL) { + xmlRngPErrMemory(ctxt, NULL); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNG)); + + return (ret); +} + +/** + * xmlRelaxNGFreeInnerSchema: + * @schema: a schema structure + * + * Deallocate a RelaxNG schema structure. + */ +static void +xmlRelaxNGFreeInnerSchema(xmlRelaxNGPtr schema) +{ + if (schema == NULL) + return; + + if (schema->doc != NULL) + xmlFreeDoc(schema->doc); + if (schema->defTab != NULL) { + int i; + + for (i = 0; i < schema->defNr; i++) + xmlRelaxNGFreeDefine(schema->defTab[i]); + xmlFree(schema->defTab); + } + + xmlFree(schema); +} + +/** + * xmlRelaxNGFree: + * @schema: a schema structure + * + * Deallocate a RelaxNG structure. + */ +void +xmlRelaxNGFree(xmlRelaxNGPtr schema) +{ + if (schema == NULL) + return; + + if (schema->topgrammar != NULL) + xmlRelaxNGFreeGrammar(schema->topgrammar); + if (schema->doc != NULL) + xmlFreeDoc(schema->doc); + if (schema->documents != NULL) + xmlRelaxNGFreeDocumentList(schema->documents); + if (schema->includes != NULL) + xmlRelaxNGFreeIncludeList(schema->includes); + if (schema->defTab != NULL) { + int i; + + for (i = 0; i < schema->defNr; i++) + xmlRelaxNGFreeDefine(schema->defTab[i]); + xmlFree(schema->defTab); + } + + xmlFree(schema); +} + +/** + * xmlRelaxNGNewGrammar: + * @ctxt: a Relax-NG validation context (optional) + * + * Allocate a new RelaxNG grammar. + * + * Returns the newly allocated structure or NULL in case or error + */ +static xmlRelaxNGGrammarPtr +xmlRelaxNGNewGrammar(xmlRelaxNGParserCtxtPtr ctxt) +{ + xmlRelaxNGGrammarPtr ret; + + ret = (xmlRelaxNGGrammarPtr) xmlMalloc(sizeof(xmlRelaxNGGrammar)); + if (ret == NULL) { + xmlRngPErrMemory(ctxt, NULL); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGGrammar)); + + return (ret); +} + +/** + * xmlRelaxNGFreeGrammar: + * @grammar: a grammar structure + * + * Deallocate a RelaxNG grammar structure. + */ +static void +xmlRelaxNGFreeGrammar(xmlRelaxNGGrammarPtr grammar) +{ + if (grammar == NULL) + return; + + if (grammar->children != NULL) { + xmlRelaxNGFreeGrammar(grammar->children); + } + if (grammar->next != NULL) { + xmlRelaxNGFreeGrammar(grammar->next); + } + if (grammar->refs != NULL) { + xmlHashFree(grammar->refs, NULL); + } + if (grammar->defs != NULL) { + xmlHashFree(grammar->defs, NULL); + } + + xmlFree(grammar); +} + +/** + * xmlRelaxNGNewDefine: + * @ctxt: a Relax-NG validation context + * @node: the node in the input document. + * + * Allocate a new RelaxNG define. + * + * Returns the newly allocated structure or NULL in case or error + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGNewDefine(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDefinePtr ret; + + if (ctxt->defMax == 0) { + ctxt->defMax = 16; + ctxt->defNr = 0; + ctxt->defTab = (xmlRelaxNGDefinePtr *) + xmlMalloc(ctxt->defMax * sizeof(xmlRelaxNGDefinePtr)); + if (ctxt->defTab == NULL) { + xmlRngPErrMemory(ctxt, "allocating define\n"); + return (NULL); + } + } else if (ctxt->defMax <= ctxt->defNr) { + xmlRelaxNGDefinePtr *tmp; + + ctxt->defMax *= 2; + tmp = (xmlRelaxNGDefinePtr *) xmlRealloc(ctxt->defTab, + ctxt->defMax * + sizeof + (xmlRelaxNGDefinePtr)); + if (tmp == NULL) { + xmlRngPErrMemory(ctxt, "allocating define\n"); + return (NULL); + } + ctxt->defTab = tmp; + } + ret = (xmlRelaxNGDefinePtr) xmlMalloc(sizeof(xmlRelaxNGDefine)); + if (ret == NULL) { + xmlRngPErrMemory(ctxt, "allocating define\n"); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGDefine)); + ctxt->defTab[ctxt->defNr++] = ret; + ret->node = node; + ret->depth = -1; + return (ret); +} + +/** + * xmlRelaxNGFreePartition: + * @partitions: a partition set structure + * + * Deallocate RelaxNG partition set structures. + */ +static void +xmlRelaxNGFreePartition(xmlRelaxNGPartitionPtr partitions) +{ + xmlRelaxNGInterleaveGroupPtr group; + int j; + + if (partitions != NULL) { + if (partitions->groups != NULL) { + for (j = 0; j < partitions->nbgroups; j++) { + group = partitions->groups[j]; + if (group != NULL) { + if (group->defs != NULL) + xmlFree(group->defs); + if (group->attrs != NULL) + xmlFree(group->attrs); + xmlFree(group); + } + } + xmlFree(partitions->groups); + } + if (partitions->triage != NULL) { + xmlHashFree(partitions->triage, NULL); + } + xmlFree(partitions); + } +} + +/** + * xmlRelaxNGFreeDefine: + * @define: a define structure + * + * Deallocate a RelaxNG define structure. + */ +static void +xmlRelaxNGFreeDefine(xmlRelaxNGDefinePtr define) +{ + if (define == NULL) + return; + + if ((define->type == XML_RELAXNG_VALUE) && (define->attrs != NULL)) { + xmlRelaxNGTypeLibraryPtr lib; + + lib = (xmlRelaxNGTypeLibraryPtr) define->data; + if ((lib != NULL) && (lib->freef != NULL)) + lib->freef(lib->data, (void *) define->attrs); + } + if ((define->data != NULL) && (define->type == XML_RELAXNG_INTERLEAVE)) + xmlRelaxNGFreePartition((xmlRelaxNGPartitionPtr) define->data); + if ((define->data != NULL) && (define->type == XML_RELAXNG_CHOICE)) + xmlHashFree((xmlHashTablePtr) define->data, NULL); + if (define->name != NULL) + xmlFree(define->name); + if (define->ns != NULL) + xmlFree(define->ns); + if (define->value != NULL) + xmlFree(define->value); + if (define->contModel != NULL) + xmlRegFreeRegexp(define->contModel); + xmlFree(define); +} + +/** + * xmlRelaxNGNewStates: + * @ctxt: a Relax-NG validation context + * @size: the default size for the container + * + * Allocate a new RelaxNG validation state container + * + * Returns the newly allocated structure or NULL in case or error + */ +static xmlRelaxNGStatesPtr +xmlRelaxNGNewStates(xmlRelaxNGValidCtxtPtr ctxt, int size) +{ + xmlRelaxNGStatesPtr ret; + + if ((ctxt != NULL) && + (ctxt->freeStates != NULL) && (ctxt->freeStatesNr > 0)) { + ctxt->freeStatesNr--; + ret = ctxt->freeStates[ctxt->freeStatesNr]; + ret->nbState = 0; + return (ret); + } + if (size < 16) + size = 16; + + ret = (xmlRelaxNGStatesPtr) xmlMalloc(sizeof(xmlRelaxNGStates) + + (size - + 1) * + sizeof(xmlRelaxNGValidStatePtr)); + if (ret == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + return (NULL); + } + ret->nbState = 0; + ret->maxState = size; + ret->tabState = (xmlRelaxNGValidStatePtr *) xmlMalloc((size) * + sizeof + (xmlRelaxNGValidStatePtr)); + if (ret->tabState == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + xmlFree(ret); + return (NULL); + } + return (ret); +} + +/** + * xmlRelaxNGAddStateUniq: + * @ctxt: a Relax-NG validation context + * @states: the states container + * @state: the validation state + * + * Add a RelaxNG validation state to the container without checking + * for unicity. + * + * Return 1 in case of success and 0 if this is a duplicate and -1 on error + */ +static int +xmlRelaxNGAddStatesUniq(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGStatesPtr states, + xmlRelaxNGValidStatePtr state) +{ + if (state == NULL) { + return (-1); + } + if (states->nbState >= states->maxState) { + xmlRelaxNGValidStatePtr *tmp; + int size; + + size = states->maxState * 2; + tmp = (xmlRelaxNGValidStatePtr *) xmlRealloc(states->tabState, + (size) * + sizeof + (xmlRelaxNGValidStatePtr)); + if (tmp == NULL) { + xmlRngVErrMemory(ctxt, "adding states\n"); + return (-1); + } + states->tabState = tmp; + states->maxState = size; + } + states->tabState[states->nbState++] = state; + return (1); +} + +/** + * xmlRelaxNGAddState: + * @ctxt: a Relax-NG validation context + * @states: the states container + * @state: the validation state + * + * Add a RelaxNG validation state to the container + * + * Return 1 in case of success and 0 if this is a duplicate and -1 on error + */ +static int +xmlRelaxNGAddStates(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGStatesPtr states, + xmlRelaxNGValidStatePtr state) +{ + int i; + + if (state == NULL || states == NULL) { + return (-1); + } + if (states->nbState >= states->maxState) { + xmlRelaxNGValidStatePtr *tmp; + int size; + + size = states->maxState * 2; + tmp = (xmlRelaxNGValidStatePtr *) xmlRealloc(states->tabState, + (size) * + sizeof + (xmlRelaxNGValidStatePtr)); + if (tmp == NULL) { + xmlRngVErrMemory(ctxt, "adding states\n"); + return (-1); + } + states->tabState = tmp; + states->maxState = size; + } + for (i = 0; i < states->nbState; i++) { + if (xmlRelaxNGEqualValidState(ctxt, state, states->tabState[i])) { + xmlRelaxNGFreeValidState(ctxt, state); + return (0); + } + } + states->tabState[states->nbState++] = state; + return (1); +} + +/** + * xmlRelaxNGFreeStates: + * @ctxt: a Relax-NG validation context + * @states: the container + * + * Free a RelaxNG validation state container + */ +static void +xmlRelaxNGFreeStates(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGStatesPtr states) +{ + if (states == NULL) + return; + if ((ctxt != NULL) && (ctxt->freeStates == NULL)) { + ctxt->freeStatesMax = 40; + ctxt->freeStatesNr = 0; + ctxt->freeStates = (xmlRelaxNGStatesPtr *) + xmlMalloc(ctxt->freeStatesMax * sizeof(xmlRelaxNGStatesPtr)); + if (ctxt->freeStates == NULL) { + xmlRngVErrMemory(ctxt, "storing states\n"); + } + } else if ((ctxt != NULL) + && (ctxt->freeStatesNr >= ctxt->freeStatesMax)) { + xmlRelaxNGStatesPtr *tmp; + + tmp = (xmlRelaxNGStatesPtr *) xmlRealloc(ctxt->freeStates, + 2 * ctxt->freeStatesMax * + sizeof + (xmlRelaxNGStatesPtr)); + if (tmp == NULL) { + xmlRngVErrMemory(ctxt, "storing states\n"); + xmlFree(states->tabState); + xmlFree(states); + return; + } + ctxt->freeStates = tmp; + ctxt->freeStatesMax *= 2; + } + if ((ctxt == NULL) || (ctxt->freeStates == NULL)) { + xmlFree(states->tabState); + xmlFree(states); + } else { + ctxt->freeStates[ctxt->freeStatesNr++] = states; + } +} + +/** + * xmlRelaxNGNewValidState: + * @ctxt: a Relax-NG validation context + * @node: the current node or NULL for the document + * + * Allocate a new RelaxNG validation state + * + * Returns the newly allocated structure or NULL in case or error + */ +static xmlRelaxNGValidStatePtr +xmlRelaxNGNewValidState(xmlRelaxNGValidCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGValidStatePtr ret; + xmlAttrPtr attr; + xmlAttrPtr attrs[MAX_ATTR]; + int nbAttrs = 0; + xmlNodePtr root = NULL; + + if (node == NULL) { + root = xmlDocGetRootElement(ctxt->doc); + if (root == NULL) + return (NULL); + } else { + attr = node->properties; + while (attr != NULL) { + if (nbAttrs < MAX_ATTR) + attrs[nbAttrs++] = attr; + else + nbAttrs++; + attr = attr->next; + } + } + if ((ctxt->freeState != NULL) && (ctxt->freeState->nbState > 0)) { + ctxt->freeState->nbState--; + ret = ctxt->freeState->tabState[ctxt->freeState->nbState]; + } else { + ret = + (xmlRelaxNGValidStatePtr) + xmlMalloc(sizeof(xmlRelaxNGValidState)); + if (ret == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGValidState)); + } + ret->value = NULL; + ret->endvalue = NULL; + if (node == NULL) { + ret->node = (xmlNodePtr) ctxt->doc; + ret->seq = root; + } else { + ret->node = node; + ret->seq = node->children; + } + ret->nbAttrs = 0; + if (nbAttrs > 0) { + if (ret->attrs == NULL) { + if (nbAttrs < 4) + ret->maxAttrs = 4; + else + ret->maxAttrs = nbAttrs; + ret->attrs = (xmlAttrPtr *) xmlMalloc(ret->maxAttrs * + sizeof(xmlAttrPtr)); + if (ret->attrs == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + return (ret); + } + } else if (ret->maxAttrs < nbAttrs) { + xmlAttrPtr *tmp; + + tmp = (xmlAttrPtr *) xmlRealloc(ret->attrs, nbAttrs * + sizeof(xmlAttrPtr)); + if (tmp == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + return (ret); + } + ret->attrs = tmp; + ret->maxAttrs = nbAttrs; + } + ret->nbAttrs = nbAttrs; + if (nbAttrs < MAX_ATTR) { + memcpy(ret->attrs, attrs, sizeof(xmlAttrPtr) * nbAttrs); + } else { + attr = node->properties; + nbAttrs = 0; + while (attr != NULL) { + ret->attrs[nbAttrs++] = attr; + attr = attr->next; + } + } + } + ret->nbAttrLeft = ret->nbAttrs; + return (ret); +} + +/** + * xmlRelaxNGCopyValidState: + * @ctxt: a Relax-NG validation context + * @state: a validation state + * + * Copy the validation state + * + * Returns the newly allocated structure or NULL in case or error + */ +static xmlRelaxNGValidStatePtr +xmlRelaxNGCopyValidState(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidStatePtr state) +{ + xmlRelaxNGValidStatePtr ret; + unsigned int maxAttrs; + xmlAttrPtr *attrs; + + if (state == NULL) + return (NULL); + if ((ctxt->freeState != NULL) && (ctxt->freeState->nbState > 0)) { + ctxt->freeState->nbState--; + ret = ctxt->freeState->tabState[ctxt->freeState->nbState]; + } else { + ret = + (xmlRelaxNGValidStatePtr) + xmlMalloc(sizeof(xmlRelaxNGValidState)); + if (ret == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGValidState)); + } + attrs = ret->attrs; + maxAttrs = ret->maxAttrs; + memcpy(ret, state, sizeof(xmlRelaxNGValidState)); + ret->attrs = attrs; + ret->maxAttrs = maxAttrs; + if (state->nbAttrs > 0) { + if (ret->attrs == NULL) { + ret->maxAttrs = state->maxAttrs; + ret->attrs = (xmlAttrPtr *) xmlMalloc(ret->maxAttrs * + sizeof(xmlAttrPtr)); + if (ret->attrs == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + ret->nbAttrs = 0; + return (ret); + } + } else if (ret->maxAttrs < state->nbAttrs) { + xmlAttrPtr *tmp; + + tmp = (xmlAttrPtr *) xmlRealloc(ret->attrs, state->maxAttrs * + sizeof(xmlAttrPtr)); + if (tmp == NULL) { + xmlRngVErrMemory(ctxt, "allocating states\n"); + ret->nbAttrs = 0; + return (ret); + } + ret->maxAttrs = state->maxAttrs; + ret->attrs = tmp; + } + memcpy(ret->attrs, state->attrs, + state->nbAttrs * sizeof(xmlAttrPtr)); + } + return (ret); +} + +/** + * xmlRelaxNGEqualValidState: + * @ctxt: a Relax-NG validation context + * @state1: a validation state + * @state2: a validation state + * + * Compare the validation states for equality + * + * Returns 1 if equal, 0 otherwise + */ +static int +xmlRelaxNGEqualValidState(xmlRelaxNGValidCtxtPtr ctxt ATTRIBUTE_UNUSED, + xmlRelaxNGValidStatePtr state1, + xmlRelaxNGValidStatePtr state2) +{ + int i; + + if ((state1 == NULL) || (state2 == NULL)) + return (0); + if (state1 == state2) + return (1); + if (state1->node != state2->node) + return (0); + if (state1->seq != state2->seq) + return (0); + if (state1->nbAttrLeft != state2->nbAttrLeft) + return (0); + if (state1->nbAttrs != state2->nbAttrs) + return (0); + if (state1->endvalue != state2->endvalue) + return (0); + if ((state1->value != state2->value) && + (!xmlStrEqual(state1->value, state2->value))) + return (0); + for (i = 0; i < state1->nbAttrs; i++) { + if (state1->attrs[i] != state2->attrs[i]) + return (0); + } + return (1); +} + +/** + * xmlRelaxNGFreeValidState: + * @state: a validation state structure + * + * Deallocate a RelaxNG validation state structure. + */ +static void +xmlRelaxNGFreeValidState(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidStatePtr state) +{ + if (state == NULL) + return; + + if ((ctxt != NULL) && (ctxt->freeState == NULL)) { + ctxt->freeState = xmlRelaxNGNewStates(ctxt, 40); + } + if ((ctxt == NULL) || (ctxt->freeState == NULL)) { + if (state->attrs != NULL) + xmlFree(state->attrs); + xmlFree(state); + } else { + xmlRelaxNGAddStatesUniq(ctxt, ctxt->freeState, state); + } +} + +/************************************************************************ + * * + * Semi internal functions * + * * + ************************************************************************/ + +/** + * xmlRelaxParserSetFlag: + * @ctxt: a RelaxNG parser context + * @flags: a set of flags values + * + * Semi private function used to pass informations to a parser context + * which are a combination of xmlRelaxNGParserFlag . + * + * Returns 0 if success and -1 in case of error + */ +int +xmlRelaxParserSetFlag(xmlRelaxNGParserCtxtPtr ctxt, int flags) +{ + if (ctxt == NULL) return(-1); + if (flags & XML_RELAXNGP_FREE_DOC) { + ctxt->crng |= XML_RELAXNGP_FREE_DOC; + flags -= XML_RELAXNGP_FREE_DOC; + } + if (flags & XML_RELAXNGP_CRNG) { + ctxt->crng |= XML_RELAXNGP_CRNG; + flags -= XML_RELAXNGP_CRNG; + } + if (flags != 0) return(-1); + return(0); +} + +/************************************************************************ + * * + * Document functions * + * * + ************************************************************************/ +static xmlDocPtr xmlRelaxNGCleanupDoc(xmlRelaxNGParserCtxtPtr ctxt, + xmlDocPtr doc); + +/** + * xmlRelaxNGIncludePush: + * @ctxt: the parser context + * @value: the element doc + * + * Pushes a new include on top of the include stack + * + * Returns 0 in case of error, the index in the stack otherwise + */ +static int +xmlRelaxNGIncludePush(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGIncludePtr value) +{ + if (ctxt->incTab == NULL) { + ctxt->incMax = 4; + ctxt->incNr = 0; + ctxt->incTab = + (xmlRelaxNGIncludePtr *) xmlMalloc(ctxt->incMax * + sizeof(ctxt->incTab[0])); + if (ctxt->incTab == NULL) { + xmlRngPErrMemory(ctxt, "allocating include\n"); + return (0); + } + } + if (ctxt->incNr >= ctxt->incMax) { + ctxt->incMax *= 2; + ctxt->incTab = + (xmlRelaxNGIncludePtr *) xmlRealloc(ctxt->incTab, + ctxt->incMax * + sizeof(ctxt->incTab[0])); + if (ctxt->incTab == NULL) { + xmlRngPErrMemory(ctxt, "allocating include\n"); + return (0); + } + } + ctxt->incTab[ctxt->incNr] = value; + ctxt->inc = value; + return (ctxt->incNr++); +} + +/** + * xmlRelaxNGIncludePop: + * @ctxt: the parser context + * + * Pops the top include from the include stack + * + * Returns the include just removed + */ +static xmlRelaxNGIncludePtr +xmlRelaxNGIncludePop(xmlRelaxNGParserCtxtPtr ctxt) +{ + xmlRelaxNGIncludePtr ret; + + if (ctxt->incNr <= 0) + return (NULL); + ctxt->incNr--; + if (ctxt->incNr > 0) + ctxt->inc = ctxt->incTab[ctxt->incNr - 1]; + else + ctxt->inc = NULL; + ret = ctxt->incTab[ctxt->incNr]; + ctxt->incTab[ctxt->incNr] = NULL; + return (ret); +} + +/** + * xmlRelaxNGRemoveRedefine: + * @ctxt: the parser context + * @URL: the normalized URL + * @target: the included target + * @name: the define name to eliminate + * + * Applies the elimination algorithm of 4.7 + * + * Returns 0 in case of error, 1 in case of success. + */ +static int +xmlRelaxNGRemoveRedefine(xmlRelaxNGParserCtxtPtr ctxt, + const xmlChar * URL ATTRIBUTE_UNUSED, + xmlNodePtr target, const xmlChar * name) +{ + int found = 0; + xmlNodePtr tmp, tmp2; + xmlChar *name2; + +#ifdef DEBUG_INCLUDE + if (name == NULL) + xmlGenericError(xmlGenericErrorContext, + "Elimination of <include> start from %s\n", URL); + else + xmlGenericError(xmlGenericErrorContext, + "Elimination of <include> define %s from %s\n", + name, URL); +#endif + tmp = target; + while (tmp != NULL) { + tmp2 = tmp->next; + if ((name == NULL) && (IS_RELAXNG(tmp, "start"))) { + found = 1; + xmlUnlinkNode(tmp); + xmlFreeNode(tmp); + } else if ((name != NULL) && (IS_RELAXNG(tmp, "define"))) { + name2 = xmlGetProp(tmp, BAD_CAST "name"); + xmlRelaxNGNormExtSpace(name2); + if (name2 != NULL) { + if (xmlStrEqual(name, name2)) { + found = 1; + xmlUnlinkNode(tmp); + xmlFreeNode(tmp); + } + xmlFree(name2); + } + } else if (IS_RELAXNG(tmp, "include")) { + xmlChar *href = NULL; + xmlRelaxNGDocumentPtr inc = tmp->psvi; + + if ((inc != NULL) && (inc->doc != NULL) && + (inc->doc->children != NULL)) { + + if (xmlStrEqual + (inc->doc->children->name, BAD_CAST "grammar")) { +#ifdef DEBUG_INCLUDE + href = xmlGetProp(tmp, BAD_CAST "href"); +#endif + if (xmlRelaxNGRemoveRedefine(ctxt, href, + xmlDocGetRootElement(inc->doc)->children, + name) == 1) { + found = 1; + } +#ifdef DEBUG_INCLUDE + if (href != NULL) + xmlFree(href); +#endif + } + } + if (xmlRelaxNGRemoveRedefine(ctxt, URL, tmp->children, name) == 1) { + found = 1; + } + } + tmp = tmp2; + } + return (found); +} + +/** + * xmlRelaxNGLoadInclude: + * @ctxt: the parser context + * @URL: the normalized URL + * @node: the include node. + * @ns: the namespace passed from the context. + * + * First lookup if the document is already loaded into the parser context, + * check against recursion. If not found the resource is loaded and + * the content is preprocessed before being returned back to the caller. + * + * Returns the xmlRelaxNGIncludePtr or NULL in case of error + */ +static xmlRelaxNGIncludePtr +xmlRelaxNGLoadInclude(xmlRelaxNGParserCtxtPtr ctxt, const xmlChar * URL, + xmlNodePtr node, const xmlChar * ns) +{ + xmlRelaxNGIncludePtr ret = NULL; + xmlDocPtr doc; + int i; + xmlNodePtr root, cur; + +#ifdef DEBUG_INCLUDE + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGLoadInclude(%s)\n", URL); +#endif + + /* + * check against recursion in the stack + */ + for (i = 0; i < ctxt->incNr; i++) { + if (xmlStrEqual(ctxt->incTab[i]->href, URL)) { + xmlRngPErr(ctxt, NULL, XML_RNGP_INCLUDE_RECURSE, + "Detected an Include recursion for %s\n", URL, + NULL); + return (NULL); + } + } + + /* + * load the document + */ + doc = xmlReadFile((const char *) URL,NULL,0); + if (doc == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_PARSE_ERROR, + "xmlRelaxNG: could not load %s\n", URL, NULL); + return (NULL); + } +#ifdef DEBUG_INCLUDE + xmlGenericError(xmlGenericErrorContext, "Parsed %s Okay\n", URL); +#endif + + /* + * Allocate the document structures and register it first. + */ + ret = (xmlRelaxNGIncludePtr) xmlMalloc(sizeof(xmlRelaxNGInclude)); + if (ret == NULL) { + xmlRngPErrMemory(ctxt, "allocating include\n"); + xmlFreeDoc(doc); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGInclude)); + ret->doc = doc; + ret->href = xmlStrdup(URL); + ret->next = ctxt->includes; + ctxt->includes = ret; + + /* + * transmit the ns if needed + */ + if (ns != NULL) { + root = xmlDocGetRootElement(doc); + if (root != NULL) { + if (xmlHasProp(root, BAD_CAST "ns") == NULL) { + xmlSetProp(root, BAD_CAST "ns", ns); + } + } + } + + /* + * push it on the stack + */ + xmlRelaxNGIncludePush(ctxt, ret); + + /* + * Some preprocessing of the document content, this include recursing + * in the include stack. + */ +#ifdef DEBUG_INCLUDE + xmlGenericError(xmlGenericErrorContext, "cleanup of %s\n", URL); +#endif + + doc = xmlRelaxNGCleanupDoc(ctxt, doc); + if (doc == NULL) { + ctxt->inc = NULL; + return (NULL); + } + + /* + * Pop up the include from the stack + */ + xmlRelaxNGIncludePop(ctxt); + +#ifdef DEBUG_INCLUDE + xmlGenericError(xmlGenericErrorContext, "Checking of %s\n", URL); +#endif + /* + * Check that the top element is a grammar + */ + root = xmlDocGetRootElement(doc); + if (root == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY, + "xmlRelaxNG: included document is empty %s\n", URL, + NULL); + return (NULL); + } + if (!IS_RELAXNG(root, "grammar")) { + xmlRngPErr(ctxt, node, XML_RNGP_GRAMMAR_MISSING, + "xmlRelaxNG: included document %s root is not a grammar\n", + URL, NULL); + return (NULL); + } + + /* + * Elimination of redefined rules in the include. + */ + cur = node->children; + while (cur != NULL) { + if (IS_RELAXNG(cur, "start")) { + int found = 0; + + found = + xmlRelaxNGRemoveRedefine(ctxt, URL, root->children, NULL); + if (!found) { + xmlRngPErr(ctxt, node, XML_RNGP_START_MISSING, + "xmlRelaxNG: include %s has a start but not the included grammar\n", + URL, NULL); + } + } else if (IS_RELAXNG(cur, "define")) { + xmlChar *name; + + name = xmlGetProp(cur, BAD_CAST "name"); + if (name == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_NAME_MISSING, + "xmlRelaxNG: include %s has define without name\n", + URL, NULL); + } else { + int found; + + xmlRelaxNGNormExtSpace(name); + found = xmlRelaxNGRemoveRedefine(ctxt, URL, + root->children, name); + if (!found) { + xmlRngPErr(ctxt, node, XML_RNGP_DEFINE_MISSING, + "xmlRelaxNG: include %s has a define %s but not the included grammar\n", + URL, name); + } + xmlFree(name); + } + } + if (IS_RELAXNG(cur, "div") && cur->children != NULL) { + cur = cur->children; + } else { + if (cur->next != NULL) { + cur = cur->next; + } else { + while (cur->parent != node && cur->parent->next == NULL) { + cur = cur->parent; + } + cur = cur->parent != node ? cur->parent->next : NULL; + } + } + } + + + return (ret); +} + +/** + * xmlRelaxNGValidErrorPush: + * @ctxt: the validation context + * @err: the error code + * @arg1: the first string argument + * @arg2: the second string argument + * @dup: arg need to be duplicated + * + * Pushes a new error on top of the error stack + * + * Returns 0 in case of error, the index in the stack otherwise + */ +static int +xmlRelaxNGValidErrorPush(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidErr err, const xmlChar * arg1, + const xmlChar * arg2, int dup) +{ + xmlRelaxNGValidErrorPtr cur; + +#ifdef DEBUG_ERROR + xmlGenericError(xmlGenericErrorContext, + "Pushing error %d at %d on stack\n", err, ctxt->errNr); +#endif + if (ctxt->errTab == NULL) { + ctxt->errMax = 8; + ctxt->errNr = 0; + ctxt->errTab = + (xmlRelaxNGValidErrorPtr) xmlMalloc(ctxt->errMax * + sizeof + (xmlRelaxNGValidError)); + if (ctxt->errTab == NULL) { + xmlRngVErrMemory(ctxt, "pushing error\n"); + return (0); + } + ctxt->err = NULL; + } + if (ctxt->errNr >= ctxt->errMax) { + ctxt->errMax *= 2; + ctxt->errTab = + (xmlRelaxNGValidErrorPtr) xmlRealloc(ctxt->errTab, + ctxt->errMax * + sizeof + (xmlRelaxNGValidError)); + if (ctxt->errTab == NULL) { + xmlRngVErrMemory(ctxt, "pushing error\n"); + return (0); + } + ctxt->err = &ctxt->errTab[ctxt->errNr - 1]; + } + if ((ctxt->err != NULL) && (ctxt->state != NULL) && + (ctxt->err->node == ctxt->state->node) && (ctxt->err->err == err)) + return (ctxt->errNr); + cur = &ctxt->errTab[ctxt->errNr]; + cur->err = err; + if (dup) { + cur->arg1 = xmlStrdup(arg1); + cur->arg2 = xmlStrdup(arg2); + cur->flags = ERROR_IS_DUP; + } else { + cur->arg1 = arg1; + cur->arg2 = arg2; + cur->flags = 0; + } + if (ctxt->state != NULL) { + cur->node = ctxt->state->node; + cur->seq = ctxt->state->seq; + } else { + cur->node = NULL; + cur->seq = NULL; + } + ctxt->err = cur; + return (ctxt->errNr++); +} + +/** + * xmlRelaxNGValidErrorPop: + * @ctxt: the validation context + * + * Pops the top error from the error stack + */ +static void +xmlRelaxNGValidErrorPop(xmlRelaxNGValidCtxtPtr ctxt) +{ + xmlRelaxNGValidErrorPtr cur; + + if (ctxt->errNr <= 0) { + ctxt->err = NULL; + return; + } + ctxt->errNr--; + if (ctxt->errNr > 0) + ctxt->err = &ctxt->errTab[ctxt->errNr - 1]; + else + ctxt->err = NULL; + cur = &ctxt->errTab[ctxt->errNr]; + if (cur->flags & ERROR_IS_DUP) { + if (cur->arg1 != NULL) + xmlFree((xmlChar *) cur->arg1); + cur->arg1 = NULL; + if (cur->arg2 != NULL) + xmlFree((xmlChar *) cur->arg2); + cur->arg2 = NULL; + cur->flags = 0; + } +} + +/** + * xmlRelaxNGDocumentPush: + * @ctxt: the parser context + * @value: the element doc + * + * Pushes a new doc on top of the doc stack + * + * Returns 0 in case of error, the index in the stack otherwise + */ +static int +xmlRelaxNGDocumentPush(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDocumentPtr value) +{ + if (ctxt->docTab == NULL) { + ctxt->docMax = 4; + ctxt->docNr = 0; + ctxt->docTab = + (xmlRelaxNGDocumentPtr *) xmlMalloc(ctxt->docMax * + sizeof(ctxt->docTab[0])); + if (ctxt->docTab == NULL) { + xmlRngPErrMemory(ctxt, "adding document\n"); + return (0); + } + } + if (ctxt->docNr >= ctxt->docMax) { + ctxt->docMax *= 2; + ctxt->docTab = + (xmlRelaxNGDocumentPtr *) xmlRealloc(ctxt->docTab, + ctxt->docMax * + sizeof(ctxt->docTab[0])); + if (ctxt->docTab == NULL) { + xmlRngPErrMemory(ctxt, "adding document\n"); + return (0); + } + } + ctxt->docTab[ctxt->docNr] = value; + ctxt->doc = value; + return (ctxt->docNr++); +} + +/** + * xmlRelaxNGDocumentPop: + * @ctxt: the parser context + * + * Pops the top doc from the doc stack + * + * Returns the doc just removed + */ +static xmlRelaxNGDocumentPtr +xmlRelaxNGDocumentPop(xmlRelaxNGParserCtxtPtr ctxt) +{ + xmlRelaxNGDocumentPtr ret; + + if (ctxt->docNr <= 0) + return (NULL); + ctxt->docNr--; + if (ctxt->docNr > 0) + ctxt->doc = ctxt->docTab[ctxt->docNr - 1]; + else + ctxt->doc = NULL; + ret = ctxt->docTab[ctxt->docNr]; + ctxt->docTab[ctxt->docNr] = NULL; + return (ret); +} + +/** + * xmlRelaxNGLoadExternalRef: + * @ctxt: the parser context + * @URL: the normalized URL + * @ns: the inherited ns if any + * + * First lookup if the document is already loaded into the parser context, + * check against recursion. If not found the resource is loaded and + * the content is preprocessed before being returned back to the caller. + * + * Returns the xmlRelaxNGDocumentPtr or NULL in case of error + */ +static xmlRelaxNGDocumentPtr +xmlRelaxNGLoadExternalRef(xmlRelaxNGParserCtxtPtr ctxt, + const xmlChar * URL, const xmlChar * ns) +{ + xmlRelaxNGDocumentPtr ret = NULL; + xmlDocPtr doc; + xmlNodePtr root; + int i; + + /* + * check against recursion in the stack + */ + for (i = 0; i < ctxt->docNr; i++) { + if (xmlStrEqual(ctxt->docTab[i]->href, URL)) { + xmlRngPErr(ctxt, NULL, XML_RNGP_EXTERNALREF_RECURSE, + "Detected an externalRef recursion for %s\n", URL, + NULL); + return (NULL); + } + } + + /* + * load the document + */ + doc = xmlReadFile((const char *) URL,NULL,0); + if (doc == NULL) { + xmlRngPErr(ctxt, NULL, XML_RNGP_PARSE_ERROR, + "xmlRelaxNG: could not load %s\n", URL, NULL); + return (NULL); + } + + /* + * Allocate the document structures and register it first. + */ + ret = (xmlRelaxNGDocumentPtr) xmlMalloc(sizeof(xmlRelaxNGDocument)); + if (ret == NULL) { + xmlRngPErr(ctxt, (xmlNodePtr) doc, XML_ERR_NO_MEMORY, + "xmlRelaxNG: allocate memory for doc %s\n", URL, NULL); + xmlFreeDoc(doc); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGDocument)); + ret->doc = doc; + ret->href = xmlStrdup(URL); + ret->next = ctxt->documents; + ret->externalRef = 1; + ctxt->documents = ret; + + /* + * transmit the ns if needed + */ + if (ns != NULL) { + root = xmlDocGetRootElement(doc); + if (root != NULL) { + if (xmlHasProp(root, BAD_CAST "ns") == NULL) { + xmlSetProp(root, BAD_CAST "ns", ns); + } + } + } + + /* + * push it on the stack and register it in the hash table + */ + xmlRelaxNGDocumentPush(ctxt, ret); + + /* + * Some preprocessing of the document content + */ + doc = xmlRelaxNGCleanupDoc(ctxt, doc); + if (doc == NULL) { + ctxt->doc = NULL; + return (NULL); + } + + xmlRelaxNGDocumentPop(ctxt); + + return (ret); +} + +/************************************************************************ + * * + * Error functions * + * * + ************************************************************************/ + +#define VALID_ERR(a) xmlRelaxNGAddValidError(ctxt, a, NULL, NULL, 0); +#define VALID_ERR2(a, b) xmlRelaxNGAddValidError(ctxt, a, b, NULL, 0); +#define VALID_ERR3(a, b, c) xmlRelaxNGAddValidError(ctxt, a, b, c, 0); +#define VALID_ERR2P(a, b) xmlRelaxNGAddValidError(ctxt, a, b, NULL, 1); +#define VALID_ERR3P(a, b, c) xmlRelaxNGAddValidError(ctxt, a, b, c, 1); + +static const char * +xmlRelaxNGDefName(xmlRelaxNGDefinePtr def) +{ + if (def == NULL) + return ("none"); + switch (def->type) { + case XML_RELAXNG_EMPTY: + return ("empty"); + case XML_RELAXNG_NOT_ALLOWED: + return ("notAllowed"); + case XML_RELAXNG_EXCEPT: + return ("except"); + case XML_RELAXNG_TEXT: + return ("text"); + case XML_RELAXNG_ELEMENT: + return ("element"); + case XML_RELAXNG_DATATYPE: + return ("datatype"); + case XML_RELAXNG_VALUE: + return ("value"); + case XML_RELAXNG_LIST: + return ("list"); + case XML_RELAXNG_ATTRIBUTE: + return ("attribute"); + case XML_RELAXNG_DEF: + return ("def"); + case XML_RELAXNG_REF: + return ("ref"); + case XML_RELAXNG_EXTERNALREF: + return ("externalRef"); + case XML_RELAXNG_PARENTREF: + return ("parentRef"); + case XML_RELAXNG_OPTIONAL: + return ("optional"); + case XML_RELAXNG_ZEROORMORE: + return ("zeroOrMore"); + case XML_RELAXNG_ONEORMORE: + return ("oneOrMore"); + case XML_RELAXNG_CHOICE: + return ("choice"); + case XML_RELAXNG_GROUP: + return ("group"); + case XML_RELAXNG_INTERLEAVE: + return ("interleave"); + case XML_RELAXNG_START: + return ("start"); + case XML_RELAXNG_NOOP: + return ("noop"); + case XML_RELAXNG_PARAM: + return ("param"); + } + return ("unknown"); +} + +/** + * xmlRelaxNGGetErrorString: + * @err: the error code + * @arg1: the first string argument + * @arg2: the second string argument + * + * computes a formatted error string for the given error code and args + * + * Returns the error string, it must be deallocated by the caller + */ +static xmlChar * +xmlRelaxNGGetErrorString(xmlRelaxNGValidErr err, const xmlChar * arg1, + const xmlChar * arg2) +{ + char msg[1000]; + xmlChar *result; + + if (arg1 == NULL) + arg1 = BAD_CAST ""; + if (arg2 == NULL) + arg2 = BAD_CAST ""; + + msg[0] = 0; + switch (err) { + case XML_RELAXNG_OK: + return (NULL); + case XML_RELAXNG_ERR_MEMORY: + return (xmlCharStrdup("out of memory\n")); + case XML_RELAXNG_ERR_TYPE: + snprintf(msg, 1000, "failed to validate type %s\n", arg1); + break; + case XML_RELAXNG_ERR_TYPEVAL: + snprintf(msg, 1000, "Type %s doesn't allow value '%s'\n", arg1, + arg2); + break; + case XML_RELAXNG_ERR_DUPID: + snprintf(msg, 1000, "ID %s redefined\n", arg1); + break; + case XML_RELAXNG_ERR_TYPECMP: + snprintf(msg, 1000, "failed to compare type %s\n", arg1); + break; + case XML_RELAXNG_ERR_NOSTATE: + return (xmlCharStrdup("Internal error: no state\n")); + case XML_RELAXNG_ERR_NODEFINE: + return (xmlCharStrdup("Internal error: no define\n")); + case XML_RELAXNG_ERR_INTERNAL: + snprintf(msg, 1000, "Internal error: %s\n", arg1); + break; + case XML_RELAXNG_ERR_LISTEXTRA: + snprintf(msg, 1000, "Extra data in list: %s\n", arg1); + break; + case XML_RELAXNG_ERR_INTERNODATA: + return (xmlCharStrdup + ("Internal: interleave block has no data\n")); + case XML_RELAXNG_ERR_INTERSEQ: + return (xmlCharStrdup("Invalid sequence in interleave\n")); + case XML_RELAXNG_ERR_INTEREXTRA: + snprintf(msg, 1000, "Extra element %s in interleave\n", arg1); + break; + case XML_RELAXNG_ERR_ELEMNAME: + snprintf(msg, 1000, "Expecting element %s, got %s\n", arg1, + arg2); + break; + case XML_RELAXNG_ERR_ELEMNONS: + snprintf(msg, 1000, "Expecting a namespace for element %s\n", + arg1); + break; + case XML_RELAXNG_ERR_ELEMWRONGNS: + snprintf(msg, 1000, + "Element %s has wrong namespace: expecting %s\n", arg1, + arg2); + break; + case XML_RELAXNG_ERR_ELEMWRONG: + snprintf(msg, 1000, "Did not expect element %s there\n", arg1); + break; + case XML_RELAXNG_ERR_TEXTWRONG: + snprintf(msg, 1000, + "Did not expect text in element %s content\n", arg1); + break; + case XML_RELAXNG_ERR_ELEMEXTRANS: + snprintf(msg, 1000, "Expecting no namespace for element %s\n", + arg1); + break; + case XML_RELAXNG_ERR_ELEMNOTEMPTY: + snprintf(msg, 1000, "Expecting element %s to be empty\n", arg1); + break; + case XML_RELAXNG_ERR_NOELEM: + snprintf(msg, 1000, "Expecting an element %s, got nothing\n", + arg1); + break; + case XML_RELAXNG_ERR_NOTELEM: + return (xmlCharStrdup("Expecting an element got text\n")); + case XML_RELAXNG_ERR_ATTRVALID: + snprintf(msg, 1000, "Element %s failed to validate attributes\n", + arg1); + break; + case XML_RELAXNG_ERR_CONTENTVALID: + snprintf(msg, 1000, "Element %s failed to validate content\n", + arg1); + break; + case XML_RELAXNG_ERR_EXTRACONTENT: + snprintf(msg, 1000, "Element %s has extra content: %s\n", + arg1, arg2); + break; + case XML_RELAXNG_ERR_INVALIDATTR: + snprintf(msg, 1000, "Invalid attribute %s for element %s\n", + arg1, arg2); + break; + case XML_RELAXNG_ERR_LACKDATA: + snprintf(msg, 1000, "Datatype element %s contains no data\n", + arg1); + break; + case XML_RELAXNG_ERR_DATAELEM: + snprintf(msg, 1000, "Datatype element %s has child elements\n", + arg1); + break; + case XML_RELAXNG_ERR_VALELEM: + snprintf(msg, 1000, "Value element %s has child elements\n", + arg1); + break; + case XML_RELAXNG_ERR_LISTELEM: + snprintf(msg, 1000, "List element %s has child elements\n", + arg1); + break; + case XML_RELAXNG_ERR_DATATYPE: + snprintf(msg, 1000, "Error validating datatype %s\n", arg1); + break; + case XML_RELAXNG_ERR_VALUE: + snprintf(msg, 1000, "Error validating value %s\n", arg1); + break; + case XML_RELAXNG_ERR_LIST: + return (xmlCharStrdup("Error validating list\n")); + case XML_RELAXNG_ERR_NOGRAMMAR: + return (xmlCharStrdup("No top grammar defined\n")); + case XML_RELAXNG_ERR_EXTRADATA: + return (xmlCharStrdup("Extra data in the document\n")); + default: + return (xmlCharStrdup("Unknown error !\n")); + } + if (msg[0] == 0) { + snprintf(msg, 1000, "Unknown error code %d\n", err); + } + msg[1000 - 1] = 0; + result = xmlCharStrdup(msg); + return (xmlEscapeFormatString(&result)); +} + +/** + * xmlRelaxNGShowValidError: + * @ctxt: the validation context + * @err: the error number + * @node: the node + * @child: the node child generating the problem. + * @arg1: the first argument + * @arg2: the second argument + * + * Show a validation error. + */ +static void +xmlRelaxNGShowValidError(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidErr err, xmlNodePtr node, + xmlNodePtr child, const xmlChar * arg1, + const xmlChar * arg2) +{ + xmlChar *msg; + + if (ctxt->flags & FLAGS_NOERROR) + return; + +#ifdef DEBUG_ERROR + xmlGenericError(xmlGenericErrorContext, "Show error %d\n", err); +#endif + msg = xmlRelaxNGGetErrorString(err, arg1, arg2); + if (msg == NULL) + return; + + if (ctxt->errNo == XML_RELAXNG_OK) + ctxt->errNo = err; + xmlRngVErr(ctxt, (child == NULL ? node : child), err, + (const char *) msg, arg1, arg2); + xmlFree(msg); +} + +/** + * xmlRelaxNGPopErrors: + * @ctxt: the validation context + * @level: the error level in the stack + * + * pop and discard all errors until the given level is reached + */ +static void +xmlRelaxNGPopErrors(xmlRelaxNGValidCtxtPtr ctxt, int level) +{ + int i; + xmlRelaxNGValidErrorPtr err; + +#ifdef DEBUG_ERROR + xmlGenericError(xmlGenericErrorContext, + "Pop errors till level %d\n", level); +#endif + for (i = level; i < ctxt->errNr; i++) { + err = &ctxt->errTab[i]; + if (err->flags & ERROR_IS_DUP) { + if (err->arg1 != NULL) + xmlFree((xmlChar *) err->arg1); + err->arg1 = NULL; + if (err->arg2 != NULL) + xmlFree((xmlChar *) err->arg2); + err->arg2 = NULL; + err->flags = 0; + } + } + ctxt->errNr = level; + if (ctxt->errNr <= 0) + ctxt->err = NULL; +} + +/** + * xmlRelaxNGDumpValidError: + * @ctxt: the validation context + * + * Show all validation error over a given index. + */ +static void +xmlRelaxNGDumpValidError(xmlRelaxNGValidCtxtPtr ctxt) +{ + int i, j, k; + xmlRelaxNGValidErrorPtr err, dup; + +#ifdef DEBUG_ERROR + xmlGenericError(xmlGenericErrorContext, + "Dumping error stack %d errors\n", ctxt->errNr); +#endif + for (i = 0, k = 0; i < ctxt->errNr; i++) { + err = &ctxt->errTab[i]; + if (k < MAX_ERROR) { + for (j = 0; j < i; j++) { + dup = &ctxt->errTab[j]; + if ((err->err == dup->err) && (err->node == dup->node) && + (xmlStrEqual(err->arg1, dup->arg1)) && + (xmlStrEqual(err->arg2, dup->arg2))) { + goto skip; + } + } + xmlRelaxNGShowValidError(ctxt, err->err, err->node, err->seq, + err->arg1, err->arg2); + k++; + } + skip: + if (err->flags & ERROR_IS_DUP) { + if (err->arg1 != NULL) + xmlFree((xmlChar *) err->arg1); + err->arg1 = NULL; + if (err->arg2 != NULL) + xmlFree((xmlChar *) err->arg2); + err->arg2 = NULL; + err->flags = 0; + } + } + ctxt->errNr = 0; +} + +/** + * xmlRelaxNGAddValidError: + * @ctxt: the validation context + * @err: the error number + * @arg1: the first argument + * @arg2: the second argument + * @dup: need to dup the args + * + * Register a validation error, either generating it if it's sure + * or stacking it for later handling if unsure. + */ +static void +xmlRelaxNGAddValidError(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidErr err, const xmlChar * arg1, + const xmlChar * arg2, int dup) +{ + if (ctxt == NULL) + return; + if (ctxt->flags & FLAGS_NOERROR) + return; + +#ifdef DEBUG_ERROR + xmlGenericError(xmlGenericErrorContext, "Adding error %d\n", err); +#endif + /* + * generate the error directly + */ + if (((ctxt->flags & FLAGS_IGNORABLE) == 0) || + (ctxt->flags & FLAGS_NEGATIVE)) { + xmlNodePtr node, seq; + + /* + * Flush first any stacked error which might be the + * real cause of the problem. + */ + if (ctxt->errNr != 0) + xmlRelaxNGDumpValidError(ctxt); + if (ctxt->state != NULL) { + node = ctxt->state->node; + seq = ctxt->state->seq; + } else { + node = seq = NULL; + } + if ((node == NULL) && (seq == NULL)) { + node = ctxt->pnode; + } + xmlRelaxNGShowValidError(ctxt, err, node, seq, arg1, arg2); + } + /* + * Stack the error for later processing if needed + */ + else { + xmlRelaxNGValidErrorPush(ctxt, err, arg1, arg2, dup); + } +} + + +/************************************************************************ + * * + * Type library hooks * + * * + ************************************************************************/ +static xmlChar *xmlRelaxNGNormalize(xmlRelaxNGValidCtxtPtr ctxt, + const xmlChar * str); + +/** + * xmlRelaxNGSchemaTypeHave: + * @data: data needed for the library + * @type: the type name + * + * Check if the given type is provided by + * the W3C XMLSchema Datatype library. + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGSchemaTypeHave(void *data ATTRIBUTE_UNUSED, const xmlChar * type) +{ + xmlSchemaTypePtr typ; + + if (type == NULL) + return (-1); + typ = xmlSchemaGetPredefinedType(type, + BAD_CAST + "http://www.w3.org/2001/XMLSchema"); + if (typ == NULL) + return (0); + return (1); +} + +/** + * xmlRelaxNGSchemaTypeCheck: + * @data: data needed for the library + * @type: the type name + * @value: the value to check + * @node: the node + * + * Check if the given type and value are validated by + * the W3C XMLSchema Datatype library. + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGSchemaTypeCheck(void *data ATTRIBUTE_UNUSED, + const xmlChar * type, + const xmlChar * value, + void **result, xmlNodePtr node) +{ + xmlSchemaTypePtr typ; + int ret; + + if ((type == NULL) || (value == NULL)) + return (-1); + typ = xmlSchemaGetPredefinedType(type, + BAD_CAST + "http://www.w3.org/2001/XMLSchema"); + if (typ == NULL) + return (-1); + ret = xmlSchemaValPredefTypeNode(typ, value, + (xmlSchemaValPtr *) result, node); + if (ret == 2) /* special ID error code */ + return (2); + if (ret == 0) + return (1); + if (ret > 0) + return (0); + return (-1); +} + +/** + * xmlRelaxNGSchemaFacetCheck: + * @data: data needed for the library + * @type: the type name + * @facet: the facet name + * @val: the facet value + * @strval: the string value + * @value: the value to check + * + * Function provided by a type library to check a value facet + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGSchemaFacetCheck(void *data ATTRIBUTE_UNUSED, + const xmlChar * type, const xmlChar * facetname, + const xmlChar * val, const xmlChar * strval, + void *value) +{ + xmlSchemaFacetPtr facet; + xmlSchemaTypePtr typ; + int ret; + + if ((type == NULL) || (strval == NULL)) + return (-1); + typ = xmlSchemaGetPredefinedType(type, + BAD_CAST + "http://www.w3.org/2001/XMLSchema"); + if (typ == NULL) + return (-1); + + facet = xmlSchemaNewFacet(); + if (facet == NULL) + return (-1); + + if (xmlStrEqual(facetname, BAD_CAST "minInclusive")) { + facet->type = XML_SCHEMA_FACET_MININCLUSIVE; + } else if (xmlStrEqual(facetname, BAD_CAST "minExclusive")) { + facet->type = XML_SCHEMA_FACET_MINEXCLUSIVE; + } else if (xmlStrEqual(facetname, BAD_CAST "maxInclusive")) { + facet->type = XML_SCHEMA_FACET_MAXINCLUSIVE; + } else if (xmlStrEqual(facetname, BAD_CAST "maxExclusive")) { + facet->type = XML_SCHEMA_FACET_MAXEXCLUSIVE; + } else if (xmlStrEqual(facetname, BAD_CAST "totalDigits")) { + facet->type = XML_SCHEMA_FACET_TOTALDIGITS; + } else if (xmlStrEqual(facetname, BAD_CAST "fractionDigits")) { + facet->type = XML_SCHEMA_FACET_FRACTIONDIGITS; + } else if (xmlStrEqual(facetname, BAD_CAST "pattern")) { + facet->type = XML_SCHEMA_FACET_PATTERN; + } else if (xmlStrEqual(facetname, BAD_CAST "enumeration")) { + facet->type = XML_SCHEMA_FACET_ENUMERATION; + } else if (xmlStrEqual(facetname, BAD_CAST "whiteSpace")) { + facet->type = XML_SCHEMA_FACET_WHITESPACE; + } else if (xmlStrEqual(facetname, BAD_CAST "length")) { + facet->type = XML_SCHEMA_FACET_LENGTH; + } else if (xmlStrEqual(facetname, BAD_CAST "maxLength")) { + facet->type = XML_SCHEMA_FACET_MAXLENGTH; + } else if (xmlStrEqual(facetname, BAD_CAST "minLength")) { + facet->type = XML_SCHEMA_FACET_MINLENGTH; + } else { + xmlSchemaFreeFacet(facet); + return (-1); + } + facet->value = val; + ret = xmlSchemaCheckFacet(facet, typ, NULL, type); + if (ret != 0) { + xmlSchemaFreeFacet(facet); + return (-1); + } + ret = xmlSchemaValidateFacet(typ, facet, strval, value); + xmlSchemaFreeFacet(facet); + if (ret != 0) + return (-1); + return (0); +} + +/** + * xmlRelaxNGSchemaFreeValue: + * @data: data needed for the library + * @value: the value to free + * + * Function provided by a type library to free a Schemas value + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static void +xmlRelaxNGSchemaFreeValue(void *data ATTRIBUTE_UNUSED, void *value) +{ + xmlSchemaFreeValue(value); +} + +/** + * xmlRelaxNGSchemaTypeCompare: + * @data: data needed for the library + * @type: the type name + * @value1: the first value + * @value2: the second value + * + * Compare two values for equality accordingly a type from the W3C XMLSchema + * Datatype library. + * + * Returns 1 if equal, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGSchemaTypeCompare(void *data ATTRIBUTE_UNUSED, + const xmlChar * type, + const xmlChar * value1, + xmlNodePtr ctxt1, + void *comp1, + const xmlChar * value2, xmlNodePtr ctxt2) +{ + int ret; + xmlSchemaTypePtr typ; + xmlSchemaValPtr res1 = NULL, res2 = NULL; + + if ((type == NULL) || (value1 == NULL) || (value2 == NULL)) + return (-1); + typ = xmlSchemaGetPredefinedType(type, + BAD_CAST + "http://www.w3.org/2001/XMLSchema"); + if (typ == NULL) + return (-1); + if (comp1 == NULL) { + ret = xmlSchemaValPredefTypeNode(typ, value1, &res1, ctxt1); + if (ret != 0) + return (-1); + if (res1 == NULL) + return (-1); + } else { + res1 = (xmlSchemaValPtr) comp1; + } + ret = xmlSchemaValPredefTypeNode(typ, value2, &res2, ctxt2); + if (ret != 0) { + if (res1 != (xmlSchemaValPtr) comp1) + xmlSchemaFreeValue(res1); + return (-1); + } + ret = xmlSchemaCompareValues(res1, res2); + if (res1 != (xmlSchemaValPtr) comp1) + xmlSchemaFreeValue(res1); + xmlSchemaFreeValue(res2); + if (ret == -2) + return (-1); + if (ret == 0) + return (1); + return (0); +} + +/** + * xmlRelaxNGDefaultTypeHave: + * @data: data needed for the library + * @type: the type name + * + * Check if the given type is provided by + * the default datatype library. + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGDefaultTypeHave(void *data ATTRIBUTE_UNUSED, + const xmlChar * type) +{ + if (type == NULL) + return (-1); + if (xmlStrEqual(type, BAD_CAST "string")) + return (1); + if (xmlStrEqual(type, BAD_CAST "token")) + return (1); + return (0); +} + +/** + * xmlRelaxNGDefaultTypeCheck: + * @data: data needed for the library + * @type: the type name + * @value: the value to check + * @node: the node + * + * Check if the given type and value are validated by + * the default datatype library. + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGDefaultTypeCheck(void *data ATTRIBUTE_UNUSED, + const xmlChar * type ATTRIBUTE_UNUSED, + const xmlChar * value ATTRIBUTE_UNUSED, + void **result ATTRIBUTE_UNUSED, + xmlNodePtr node ATTRIBUTE_UNUSED) +{ + if (value == NULL) + return (-1); + if (xmlStrEqual(type, BAD_CAST "string")) + return (1); + if (xmlStrEqual(type, BAD_CAST "token")) { + return (1); + } + + return (0); +} + +/** + * xmlRelaxNGDefaultTypeCompare: + * @data: data needed for the library + * @type: the type name + * @value1: the first value + * @value2: the second value + * + * Compare two values accordingly a type from the default + * datatype library. + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGDefaultTypeCompare(void *data ATTRIBUTE_UNUSED, + const xmlChar * type, + const xmlChar * value1, + xmlNodePtr ctxt1 ATTRIBUTE_UNUSED, + void *comp1 ATTRIBUTE_UNUSED, + const xmlChar * value2, + xmlNodePtr ctxt2 ATTRIBUTE_UNUSED) +{ + int ret = -1; + + if (xmlStrEqual(type, BAD_CAST "string")) { + ret = xmlStrEqual(value1, value2); + } else if (xmlStrEqual(type, BAD_CAST "token")) { + if (!xmlStrEqual(value1, value2)) { + xmlChar *nval, *nvalue; + + /* + * TODO: trivial optimizations are possible by + * computing at compile-time + */ + nval = xmlRelaxNGNormalize(NULL, value1); + nvalue = xmlRelaxNGNormalize(NULL, value2); + + if ((nval == NULL) || (nvalue == NULL)) + ret = -1; + else if (xmlStrEqual(nval, nvalue)) + ret = 1; + else + ret = 0; + if (nval != NULL) + xmlFree(nval); + if (nvalue != NULL) + xmlFree(nvalue); + } else + ret = 1; + } + return (ret); +} + +static int xmlRelaxNGTypeInitialized = 0; +static xmlHashTablePtr xmlRelaxNGRegisteredTypes = NULL; + +/** + * xmlRelaxNGFreeTypeLibrary: + * @lib: the type library structure + * @namespace: the URI bound to the library + * + * Free the structure associated to the type library + */ +static void +xmlRelaxNGFreeTypeLibrary(void *payload, + const xmlChar * namespace ATTRIBUTE_UNUSED) +{ + xmlRelaxNGTypeLibraryPtr lib = (xmlRelaxNGTypeLibraryPtr) payload; + if (lib == NULL) + return; + if (lib->namespace != NULL) + xmlFree((xmlChar *) lib->namespace); + xmlFree(lib); +} + +/** + * xmlRelaxNGRegisterTypeLibrary: + * @namespace: the URI bound to the library + * @data: data associated to the library + * @have: the provide function + * @check: the checking function + * @comp: the comparison function + * + * Register a new type library + * + * Returns 0 in case of success and -1 in case of error. + */ +static int +xmlRelaxNGRegisterTypeLibrary(const xmlChar * namespace, void *data, + xmlRelaxNGTypeHave have, + xmlRelaxNGTypeCheck check, + xmlRelaxNGTypeCompare comp, + xmlRelaxNGFacetCheck facet, + xmlRelaxNGTypeFree freef) +{ + xmlRelaxNGTypeLibraryPtr lib; + int ret; + + if ((xmlRelaxNGRegisteredTypes == NULL) || (namespace == NULL) || + (check == NULL) || (comp == NULL)) + return (-1); + if (xmlHashLookup(xmlRelaxNGRegisteredTypes, namespace) != NULL) { + xmlGenericError(xmlGenericErrorContext, + "Relax-NG types library '%s' already registered\n", + namespace); + return (-1); + } + lib = + (xmlRelaxNGTypeLibraryPtr) + xmlMalloc(sizeof(xmlRelaxNGTypeLibrary)); + if (lib == NULL) { + xmlRngVErrMemory(NULL, "adding types library\n"); + return (-1); + } + memset(lib, 0, sizeof(xmlRelaxNGTypeLibrary)); + lib->namespace = xmlStrdup(namespace); + lib->data = data; + lib->have = have; + lib->comp = comp; + lib->check = check; + lib->facet = facet; + lib->freef = freef; + ret = xmlHashAddEntry(xmlRelaxNGRegisteredTypes, namespace, lib); + if (ret < 0) { + xmlGenericError(xmlGenericErrorContext, + "Relax-NG types library failed to register '%s'\n", + namespace); + xmlRelaxNGFreeTypeLibrary(lib, namespace); + return (-1); + } + return (0); +} + +/** + * xmlRelaxNGInitTypes: + * + * Initialize the default type libraries. + * + * Returns 0 in case of success and -1 in case of error. + */ +int +xmlRelaxNGInitTypes(void) +{ + if (xmlRelaxNGTypeInitialized != 0) + return (0); + xmlRelaxNGRegisteredTypes = xmlHashCreate(10); + if (xmlRelaxNGRegisteredTypes == NULL) { + xmlGenericError(xmlGenericErrorContext, + "Failed to allocate sh table for Relax-NG types\n"); + return (-1); + } + xmlRelaxNGRegisterTypeLibrary(BAD_CAST + "http://www.w3.org/2001/XMLSchema-datatypes", + NULL, xmlRelaxNGSchemaTypeHave, + xmlRelaxNGSchemaTypeCheck, + xmlRelaxNGSchemaTypeCompare, + xmlRelaxNGSchemaFacetCheck, + xmlRelaxNGSchemaFreeValue); + xmlRelaxNGRegisterTypeLibrary(xmlRelaxNGNs, NULL, + xmlRelaxNGDefaultTypeHave, + xmlRelaxNGDefaultTypeCheck, + xmlRelaxNGDefaultTypeCompare, NULL, + NULL); + xmlRelaxNGTypeInitialized = 1; + return (0); +} + +/** + * xmlRelaxNGCleanupTypes: + * + * Cleanup the default Schemas type library associated to RelaxNG + */ +void +xmlRelaxNGCleanupTypes(void) +{ + xmlSchemaCleanupTypes(); + if (xmlRelaxNGTypeInitialized == 0) + return; + xmlHashFree(xmlRelaxNGRegisteredTypes, xmlRelaxNGFreeTypeLibrary); + xmlRelaxNGTypeInitialized = 0; +} + +/************************************************************************ + * * + * Compiling element content into regexp * + * * + * Sometime the element content can be compiled into a pure regexp, * + * This allows a faster execution and streamability at that level * + * * + ************************************************************************/ + +/* from automata.c but not exported */ +void xmlAutomataSetFlags(xmlAutomataPtr am, int flags); + + +static int xmlRelaxNGTryCompile(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr def); + +/** + * xmlRelaxNGIsCompilable: + * @define: the definition to check + * + * Check if a definition is nullable. + * + * Returns 1 if yes, 0 if no and -1 in case of error + */ +static int +xmlRelaxNGIsCompilable(xmlRelaxNGDefinePtr def) +{ + int ret = -1; + + if (def == NULL) { + return (-1); + } + if ((def->type != XML_RELAXNG_ELEMENT) && + (def->dflags & IS_COMPILABLE)) + return (1); + if ((def->type != XML_RELAXNG_ELEMENT) && + (def->dflags & IS_NOT_COMPILABLE)) + return (0); + switch (def->type) { + case XML_RELAXNG_NOOP: + ret = xmlRelaxNGIsCompilable(def->content); + break; + case XML_RELAXNG_TEXT: + case XML_RELAXNG_EMPTY: + ret = 1; + break; + case XML_RELAXNG_ELEMENT: + /* + * Check if the element content is compilable + */ + if (((def->dflags & IS_NOT_COMPILABLE) == 0) && + ((def->dflags & IS_COMPILABLE) == 0)) { + xmlRelaxNGDefinePtr list; + + list = def->content; + while (list != NULL) { + ret = xmlRelaxNGIsCompilable(list); + if (ret != 1) + break; + list = list->next; + } + /* + * Because the routine is recursive, we must guard against + * discovering both COMPILABLE and NOT_COMPILABLE + */ + if (ret == 0) { + def->dflags &= ~IS_COMPILABLE; + def->dflags |= IS_NOT_COMPILABLE; + } + if ((ret == 1) && !(def->dflags &= IS_NOT_COMPILABLE)) + def->dflags |= IS_COMPILABLE; +#ifdef DEBUG_COMPILE + if (ret == 1) { + xmlGenericError(xmlGenericErrorContext, + "element content for %s is compilable\n", + def->name); + } else if (ret == 0) { + xmlGenericError(xmlGenericErrorContext, + "element content for %s is not compilable\n", + def->name); + } else { + xmlGenericError(xmlGenericErrorContext, + "Problem in RelaxNGIsCompilable for element %s\n", + def->name); + } +#endif + } + /* + * All elements return a compilable status unless they + * are generic like anyName + */ + if ((def->nameClass != NULL) || (def->name == NULL)) + ret = 0; + else + ret = 1; + return (ret); + case XML_RELAXNG_REF: + case XML_RELAXNG_EXTERNALREF: + case XML_RELAXNG_PARENTREF: + if (def->depth == -20) { + return (1); + } else { + xmlRelaxNGDefinePtr list; + + def->depth = -20; + list = def->content; + while (list != NULL) { + ret = xmlRelaxNGIsCompilable(list); + if (ret != 1) + break; + list = list->next; + } + } + break; + case XML_RELAXNG_START: + case XML_RELAXNG_OPTIONAL: + case XML_RELAXNG_ZEROORMORE: + case XML_RELAXNG_ONEORMORE: + case XML_RELAXNG_CHOICE: + case XML_RELAXNG_GROUP: + case XML_RELAXNG_DEF:{ + xmlRelaxNGDefinePtr list; + + list = def->content; + while (list != NULL) { + ret = xmlRelaxNGIsCompilable(list); + if (ret != 1) + break; + list = list->next; + } + break; + } + case XML_RELAXNG_EXCEPT: + case XML_RELAXNG_ATTRIBUTE: + case XML_RELAXNG_INTERLEAVE: + case XML_RELAXNG_DATATYPE: + case XML_RELAXNG_LIST: + case XML_RELAXNG_PARAM: + case XML_RELAXNG_VALUE: + case XML_RELAXNG_NOT_ALLOWED: + ret = 0; + break; + } + if (ret == 0) + def->dflags |= IS_NOT_COMPILABLE; + if (ret == 1) + def->dflags |= IS_COMPILABLE; +#ifdef DEBUG_COMPILE + if (ret == 1) { + xmlGenericError(xmlGenericErrorContext, + "RelaxNGIsCompilable %s : true\n", + xmlRelaxNGDefName(def)); + } else if (ret == 0) { + xmlGenericError(xmlGenericErrorContext, + "RelaxNGIsCompilable %s : false\n", + xmlRelaxNGDefName(def)); + } else { + xmlGenericError(xmlGenericErrorContext, + "Problem in RelaxNGIsCompilable %s\n", + xmlRelaxNGDefName(def)); + } +#endif + return (ret); +} + +/** + * xmlRelaxNGCompile: + * ctxt: the RelaxNG parser context + * @define: the definition tree to compile + * + * Compile the set of definitions, it works recursively, till the + * element boundaries, where it tries to compile the content if possible + * + * Returns 0 if success and -1 in case of error + */ +static int +xmlRelaxNGCompile(xmlRelaxNGParserCtxtPtr ctxt, xmlRelaxNGDefinePtr def) +{ + int ret = 0; + xmlRelaxNGDefinePtr list; + + if ((ctxt == NULL) || (def == NULL)) + return (-1); + + switch (def->type) { + case XML_RELAXNG_START: + if ((xmlRelaxNGIsCompilable(def) == 1) && (def->depth != -25)) { + xmlAutomataPtr oldam = ctxt->am; + xmlAutomataStatePtr oldstate = ctxt->state; + + def->depth = -25; + + list = def->content; + ctxt->am = xmlNewAutomata(); + if (ctxt->am == NULL) + return (-1); + + /* + * assume identical strings but not same pointer are different + * atoms, needed for non-determinism detection + * That way if 2 elements with the same name are in a choice + * branch the automata is found non-deterministic and + * we fallback to the normal validation which does the right + * thing of exploring both choices. + */ + xmlAutomataSetFlags(ctxt->am, 1); + + ctxt->state = xmlAutomataGetInitState(ctxt->am); + while (list != NULL) { + xmlRelaxNGCompile(ctxt, list); + list = list->next; + } + xmlAutomataSetFinalState(ctxt->am, ctxt->state); + if (xmlAutomataIsDeterminist(ctxt->am)) + def->contModel = xmlAutomataCompile(ctxt->am); + + xmlFreeAutomata(ctxt->am); + ctxt->state = oldstate; + ctxt->am = oldam; + } + break; + case XML_RELAXNG_ELEMENT: + if ((ctxt->am != NULL) && (def->name != NULL)) { + ctxt->state = xmlAutomataNewTransition2(ctxt->am, + ctxt->state, NULL, + def->name, def->ns, + def); + } + if ((def->dflags & IS_COMPILABLE) && (def->depth != -25)) { + xmlAutomataPtr oldam = ctxt->am; + xmlAutomataStatePtr oldstate = ctxt->state; + + def->depth = -25; + + list = def->content; + ctxt->am = xmlNewAutomata(); + if (ctxt->am == NULL) + return (-1); + xmlAutomataSetFlags(ctxt->am, 1); + ctxt->state = xmlAutomataGetInitState(ctxt->am); + while (list != NULL) { + xmlRelaxNGCompile(ctxt, list); + list = list->next; + } + xmlAutomataSetFinalState(ctxt->am, ctxt->state); + def->contModel = xmlAutomataCompile(ctxt->am); + if (!xmlRegexpIsDeterminist(def->contModel)) { +#ifdef DEBUG_COMPILE + xmlGenericError(xmlGenericErrorContext, + "Content model not determinist %s\n", + def->name); +#endif + /* + * we can only use the automata if it is determinist + */ + xmlRegFreeRegexp(def->contModel); + def->contModel = NULL; + } + xmlFreeAutomata(ctxt->am); + ctxt->state = oldstate; + ctxt->am = oldam; + } else { + xmlAutomataPtr oldam = ctxt->am; + + /* + * we can't build the content model for this element content + * but it still might be possible to build it for some of its + * children, recurse. + */ + ret = xmlRelaxNGTryCompile(ctxt, def); + ctxt->am = oldam; + } + break; + case XML_RELAXNG_NOOP: + ret = xmlRelaxNGCompile(ctxt, def->content); + break; + case XML_RELAXNG_OPTIONAL:{ + xmlAutomataStatePtr oldstate = ctxt->state; + + list = def->content; + while (list != NULL) { + xmlRelaxNGCompile(ctxt, list); + list = list->next; + } + xmlAutomataNewEpsilon(ctxt->am, oldstate, ctxt->state); + break; + } + case XML_RELAXNG_ZEROORMORE:{ + xmlAutomataStatePtr oldstate; + + ctxt->state = + xmlAutomataNewEpsilon(ctxt->am, ctxt->state, NULL); + oldstate = ctxt->state; + list = def->content; + while (list != NULL) { + xmlRelaxNGCompile(ctxt, list); + list = list->next; + } + xmlAutomataNewEpsilon(ctxt->am, ctxt->state, oldstate); + ctxt->state = + xmlAutomataNewEpsilon(ctxt->am, oldstate, NULL); + break; + } + case XML_RELAXNG_ONEORMORE:{ + xmlAutomataStatePtr oldstate; + + list = def->content; + while (list != NULL) { + xmlRelaxNGCompile(ctxt, list); + list = list->next; + } + oldstate = ctxt->state; + list = def->content; + while (list != NULL) { + xmlRelaxNGCompile(ctxt, list); + list = list->next; + } + xmlAutomataNewEpsilon(ctxt->am, ctxt->state, oldstate); + ctxt->state = + xmlAutomataNewEpsilon(ctxt->am, oldstate, NULL); + break; + } + case XML_RELAXNG_CHOICE:{ + xmlAutomataStatePtr target = NULL; + xmlAutomataStatePtr oldstate = ctxt->state; + + list = def->content; + while (list != NULL) { + ctxt->state = oldstate; + ret = xmlRelaxNGCompile(ctxt, list); + if (ret != 0) + break; + if (target == NULL) + target = ctxt->state; + else { + xmlAutomataNewEpsilon(ctxt->am, ctxt->state, + target); + } + list = list->next; + } + ctxt->state = target; + + break; + } + case XML_RELAXNG_REF: + case XML_RELAXNG_EXTERNALREF: + case XML_RELAXNG_PARENTREF: + case XML_RELAXNG_GROUP: + case XML_RELAXNG_DEF: + list = def->content; + while (list != NULL) { + ret = xmlRelaxNGCompile(ctxt, list); + if (ret != 0) + break; + list = list->next; + } + break; + case XML_RELAXNG_TEXT:{ + xmlAutomataStatePtr oldstate; + + ctxt->state = + xmlAutomataNewEpsilon(ctxt->am, ctxt->state, NULL); + oldstate = ctxt->state; + xmlRelaxNGCompile(ctxt, def->content); + xmlAutomataNewTransition(ctxt->am, ctxt->state, + ctxt->state, BAD_CAST "#text", + NULL); + ctxt->state = + xmlAutomataNewEpsilon(ctxt->am, oldstate, NULL); + break; + } + case XML_RELAXNG_EMPTY: + ctxt->state = + xmlAutomataNewEpsilon(ctxt->am, ctxt->state, NULL); + break; + case XML_RELAXNG_EXCEPT: + case XML_RELAXNG_ATTRIBUTE: + case XML_RELAXNG_INTERLEAVE: + case XML_RELAXNG_NOT_ALLOWED: + case XML_RELAXNG_DATATYPE: + case XML_RELAXNG_LIST: + case XML_RELAXNG_PARAM: + case XML_RELAXNG_VALUE: + /* This should not happen and generate an internal error */ + fprintf(stderr, "RNG internal error trying to compile %s\n", + xmlRelaxNGDefName(def)); + break; + } + return (ret); +} + +/** + * xmlRelaxNGTryCompile: + * ctxt: the RelaxNG parser context + * @define: the definition tree to compile + * + * Try to compile the set of definitions, it works recursively, + * possibly ignoring parts which cannot be compiled. + * + * Returns 0 if success and -1 in case of error + */ +static int +xmlRelaxNGTryCompile(xmlRelaxNGParserCtxtPtr ctxt, xmlRelaxNGDefinePtr def) +{ + int ret = 0; + xmlRelaxNGDefinePtr list; + + if ((ctxt == NULL) || (def == NULL)) + return (-1); + + if ((def->type == XML_RELAXNG_START) || + (def->type == XML_RELAXNG_ELEMENT)) { + ret = xmlRelaxNGIsCompilable(def); + if ((def->dflags & IS_COMPILABLE) && (def->depth != -25)) { + ctxt->am = NULL; + ret = xmlRelaxNGCompile(ctxt, def); +#ifdef DEBUG_PROGRESSIVE + if (ret == 0) { + if (def->type == XML_RELAXNG_START) + xmlGenericError(xmlGenericErrorContext, + "compiled the start\n"); + else + xmlGenericError(xmlGenericErrorContext, + "compiled element %s\n", def->name); + } else { + if (def->type == XML_RELAXNG_START) + xmlGenericError(xmlGenericErrorContext, + "failed to compile the start\n"); + else + xmlGenericError(xmlGenericErrorContext, + "failed to compile element %s\n", + def->name); + } +#endif + return (ret); + } + } + switch (def->type) { + case XML_RELAXNG_NOOP: + ret = xmlRelaxNGTryCompile(ctxt, def->content); + break; + case XML_RELAXNG_TEXT: + case XML_RELAXNG_DATATYPE: + case XML_RELAXNG_LIST: + case XML_RELAXNG_PARAM: + case XML_RELAXNG_VALUE: + case XML_RELAXNG_EMPTY: + case XML_RELAXNG_ELEMENT: + ret = 0; + break; + case XML_RELAXNG_OPTIONAL: + case XML_RELAXNG_ZEROORMORE: + case XML_RELAXNG_ONEORMORE: + case XML_RELAXNG_CHOICE: + case XML_RELAXNG_GROUP: + case XML_RELAXNG_DEF: + case XML_RELAXNG_START: + case XML_RELAXNG_REF: + case XML_RELAXNG_EXTERNALREF: + case XML_RELAXNG_PARENTREF: + list = def->content; + while (list != NULL) { + ret = xmlRelaxNGTryCompile(ctxt, list); + if (ret != 0) + break; + list = list->next; + } + break; + case XML_RELAXNG_EXCEPT: + case XML_RELAXNG_ATTRIBUTE: + case XML_RELAXNG_INTERLEAVE: + case XML_RELAXNG_NOT_ALLOWED: + ret = 0; + break; + } + return (ret); +} + +/************************************************************************ + * * + * Parsing functions * + * * + ************************************************************************/ + +static xmlRelaxNGDefinePtr xmlRelaxNGParseAttribute(xmlRelaxNGParserCtxtPtr + ctxt, xmlNodePtr node); +static xmlRelaxNGDefinePtr xmlRelaxNGParseElement(xmlRelaxNGParserCtxtPtr + ctxt, xmlNodePtr node); +static xmlRelaxNGDefinePtr xmlRelaxNGParsePatterns(xmlRelaxNGParserCtxtPtr + ctxt, xmlNodePtr nodes, + int group); +static xmlRelaxNGDefinePtr xmlRelaxNGParsePattern(xmlRelaxNGParserCtxtPtr + ctxt, xmlNodePtr node); +static xmlRelaxNGPtr xmlRelaxNGParseDocument(xmlRelaxNGParserCtxtPtr ctxt, + xmlNodePtr node); +static int xmlRelaxNGParseGrammarContent(xmlRelaxNGParserCtxtPtr ctxt, + xmlNodePtr nodes); +static xmlRelaxNGDefinePtr xmlRelaxNGParseNameClass(xmlRelaxNGParserCtxtPtr + ctxt, xmlNodePtr node, + xmlRelaxNGDefinePtr + def); +static xmlRelaxNGGrammarPtr xmlRelaxNGParseGrammar(xmlRelaxNGParserCtxtPtr + ctxt, xmlNodePtr nodes); +static int xmlRelaxNGElementMatch(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define, + xmlNodePtr elem); + + +#define IS_BLANK_NODE(n) (xmlRelaxNGIsBlank((n)->content)) + +/** + * xmlRelaxNGIsNullable: + * @define: the definition to verify + * + * Check if a definition is nullable. + * + * Returns 1 if yes, 0 if no and -1 in case of error + */ +static int +xmlRelaxNGIsNullable(xmlRelaxNGDefinePtr define) +{ + int ret; + + if (define == NULL) + return (-1); + + if (define->dflags & IS_NULLABLE) + return (1); + if (define->dflags & IS_NOT_NULLABLE) + return (0); + switch (define->type) { + case XML_RELAXNG_EMPTY: + case XML_RELAXNG_TEXT: + ret = 1; + break; + case XML_RELAXNG_NOOP: + case XML_RELAXNG_DEF: + case XML_RELAXNG_REF: + case XML_RELAXNG_EXTERNALREF: + case XML_RELAXNG_PARENTREF: + case XML_RELAXNG_ONEORMORE: + ret = xmlRelaxNGIsNullable(define->content); + break; + case XML_RELAXNG_EXCEPT: + case XML_RELAXNG_NOT_ALLOWED: + case XML_RELAXNG_ELEMENT: + case XML_RELAXNG_DATATYPE: + case XML_RELAXNG_PARAM: + case XML_RELAXNG_VALUE: + case XML_RELAXNG_LIST: + case XML_RELAXNG_ATTRIBUTE: + ret = 0; + break; + case XML_RELAXNG_CHOICE:{ + xmlRelaxNGDefinePtr list = define->content; + + while (list != NULL) { + ret = xmlRelaxNGIsNullable(list); + if (ret != 0) + goto done; + list = list->next; + } + ret = 0; + break; + } + case XML_RELAXNG_START: + case XML_RELAXNG_INTERLEAVE: + case XML_RELAXNG_GROUP:{ + xmlRelaxNGDefinePtr list = define->content; + + while (list != NULL) { + ret = xmlRelaxNGIsNullable(list); + if (ret != 1) + goto done; + list = list->next; + } + return (1); + } + default: + return (-1); + } + done: + if (ret == 0) + define->dflags |= IS_NOT_NULLABLE; + if (ret == 1) + define->dflags |= IS_NULLABLE; + return (ret); +} + +/** + * xmlRelaxNGIsBlank: + * @str: a string + * + * Check if a string is ignorable c.f. 4.2. Whitespace + * + * Returns 1 if the string is NULL or made of blanks chars, 0 otherwise + */ +static int +xmlRelaxNGIsBlank(xmlChar * str) +{ + if (str == NULL) + return (1); + while (*str != 0) { + if (!(IS_BLANK_CH(*str))) + return (0); + str++; + } + return (1); +} + +/** + * xmlRelaxNGGetDataTypeLibrary: + * @ctxt: a Relax-NG parser context + * @node: the current data or value element + * + * Applies algorithm from 4.3. datatypeLibrary attribute + * + * Returns the datatypeLibrary value or NULL if not found + */ +static xmlChar * +xmlRelaxNGGetDataTypeLibrary(xmlRelaxNGParserCtxtPtr ctxt ATTRIBUTE_UNUSED, + xmlNodePtr node) +{ + xmlChar *ret, *escape; + + if (node == NULL) + return(NULL); + + if ((IS_RELAXNG(node, "data")) || (IS_RELAXNG(node, "value"))) { + ret = xmlGetProp(node, BAD_CAST "datatypeLibrary"); + if (ret != NULL) { + if (ret[0] == 0) { + xmlFree(ret); + return (NULL); + } + escape = xmlURIEscapeStr(ret, BAD_CAST ":/#?"); + if (escape == NULL) { + return (ret); + } + xmlFree(ret); + return (escape); + } + } + node = node->parent; + while ((node != NULL) && (node->type == XML_ELEMENT_NODE)) { + ret = xmlGetProp(node, BAD_CAST "datatypeLibrary"); + if (ret != NULL) { + if (ret[0] == 0) { + xmlFree(ret); + return (NULL); + } + escape = xmlURIEscapeStr(ret, BAD_CAST ":/#?"); + if (escape == NULL) { + return (ret); + } + xmlFree(ret); + return (escape); + } + node = node->parent; + } + return (NULL); +} + +/** + * xmlRelaxNGParseValue: + * @ctxt: a Relax-NG parser context + * @node: the data node. + * + * parse the content of a RelaxNG value node. + * + * Returns the definition pointer or NULL in case of error + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParseValue(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDefinePtr def = NULL; + xmlRelaxNGTypeLibraryPtr lib = NULL; + xmlChar *type; + xmlChar *library; + int success = 0; + + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_VALUE; + + type = xmlGetProp(node, BAD_CAST "type"); + if (type != NULL) { + xmlRelaxNGNormExtSpace(type); + if (xmlValidateNCName(type, 0)) { + xmlRngPErr(ctxt, node, XML_RNGP_TYPE_VALUE, + "value type '%s' is not an NCName\n", type, NULL); + } + library = xmlRelaxNGGetDataTypeLibrary(ctxt, node); + if (library == NULL) + library = + xmlStrdup(BAD_CAST "http://relaxng.org/ns/structure/1.0"); + + def->name = type; + def->ns = library; + + lib = (xmlRelaxNGTypeLibraryPtr) + xmlHashLookup(xmlRelaxNGRegisteredTypes, library); + if (lib == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_UNKNOWN_TYPE_LIB, + "Use of unregistered type library '%s'\n", library, + NULL); + def->data = NULL; + } else { + def->data = lib; + if (lib->have == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_ERROR_TYPE_LIB, + "Internal error with type library '%s': no 'have'\n", + library, NULL); + } else { + success = lib->have(lib->data, def->name); + if (success != 1) { + xmlRngPErr(ctxt, node, XML_RNGP_TYPE_NOT_FOUND, + "Error type '%s' is not exported by type library '%s'\n", + def->name, library); + } + } + } + } + if (node->children == NULL) { + def->value = xmlStrdup(BAD_CAST ""); + } else if (((node->children->type != XML_TEXT_NODE) && + (node->children->type != XML_CDATA_SECTION_NODE)) || + (node->children->next != NULL)) { + xmlRngPErr(ctxt, node, XML_RNGP_TEXT_EXPECTED, + "Expecting a single text value for <value>content\n", + NULL, NULL); + } else if (def != NULL) { + def->value = xmlNodeGetContent(node); + if (def->value == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_VALUE_NO_CONTENT, + "Element <value> has no content\n", NULL, NULL); + } else if ((lib != NULL) && (lib->check != NULL) && (success == 1)) { + void *val = NULL; + + success = + lib->check(lib->data, def->name, def->value, &val, node); + if (success != 1) { + xmlRngPErr(ctxt, node, XML_RNGP_INVALID_VALUE, + "Value '%s' is not acceptable for type '%s'\n", + def->value, def->name); + } else { + if (val != NULL) + def->attrs = val; + } + } + } + return (def); +} + +/** + * xmlRelaxNGParseData: + * @ctxt: a Relax-NG parser context + * @node: the data node. + * + * parse the content of a RelaxNG data node. + * + * Returns the definition pointer or NULL in case of error + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParseData(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDefinePtr def = NULL, except; + xmlRelaxNGDefinePtr param, lastparam = NULL; + xmlRelaxNGTypeLibraryPtr lib; + xmlChar *type; + xmlChar *library; + xmlNodePtr content; + int tmp; + + type = xmlGetProp(node, BAD_CAST "type"); + if (type == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_TYPE_MISSING, "data has no type\n", NULL, + NULL); + return (NULL); + } + xmlRelaxNGNormExtSpace(type); + if (xmlValidateNCName(type, 0)) { + xmlRngPErr(ctxt, node, XML_RNGP_TYPE_VALUE, + "data type '%s' is not an NCName\n", type, NULL); + } + library = xmlRelaxNGGetDataTypeLibrary(ctxt, node); + if (library == NULL) + library = + xmlStrdup(BAD_CAST "http://relaxng.org/ns/structure/1.0"); + + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) { + xmlFree(type); + return (NULL); + } + def->type = XML_RELAXNG_DATATYPE; + def->name = type; + def->ns = library; + + lib = (xmlRelaxNGTypeLibraryPtr) + xmlHashLookup(xmlRelaxNGRegisteredTypes, library); + if (lib == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_UNKNOWN_TYPE_LIB, + "Use of unregistered type library '%s'\n", library, + NULL); + def->data = NULL; + } else { + def->data = lib; + if (lib->have == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_ERROR_TYPE_LIB, + "Internal error with type library '%s': no 'have'\n", + library, NULL); + } else { + tmp = lib->have(lib->data, def->name); + if (tmp != 1) { + xmlRngPErr(ctxt, node, XML_RNGP_TYPE_NOT_FOUND, + "Error type '%s' is not exported by type library '%s'\n", + def->name, library); + } else + if ((xmlStrEqual + (library, + BAD_CAST + "http://www.w3.org/2001/XMLSchema-datatypes")) + && ((xmlStrEqual(def->name, BAD_CAST "IDREF")) + || (xmlStrEqual(def->name, BAD_CAST "IDREFS")))) { + ctxt->idref = 1; + } + } + } + content = node->children; + + /* + * Handle optional params + */ + while (content != NULL) { + if (!xmlStrEqual(content->name, BAD_CAST "param")) + break; + if (xmlStrEqual(library, + BAD_CAST "http://relaxng.org/ns/structure/1.0")) { + xmlRngPErr(ctxt, node, XML_RNGP_PARAM_FORBIDDEN, + "Type library '%s' does not allow type parameters\n", + library, NULL); + content = content->next; + while ((content != NULL) && + (xmlStrEqual(content->name, BAD_CAST "param"))) + content = content->next; + } else { + param = xmlRelaxNGNewDefine(ctxt, node); + if (param != NULL) { + param->type = XML_RELAXNG_PARAM; + param->name = xmlGetProp(content, BAD_CAST "name"); + if (param->name == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_PARAM_NAME_MISSING, + "param has no name\n", NULL, NULL); + } + param->value = xmlNodeGetContent(content); + if (lastparam == NULL) { + def->attrs = lastparam = param; + } else { + lastparam->next = param; + lastparam = param; + } + if (lib != NULL) { + } + } + content = content->next; + } + } + /* + * Handle optional except + */ + if ((content != NULL) + && (xmlStrEqual(content->name, BAD_CAST "except"))) { + xmlNodePtr child; + xmlRelaxNGDefinePtr tmp2, last = NULL; + + except = xmlRelaxNGNewDefine(ctxt, node); + if (except == NULL) { + return (def); + } + except->type = XML_RELAXNG_EXCEPT; + child = content->children; + def->content = except; + if (child == NULL) { + xmlRngPErr(ctxt, content, XML_RNGP_EXCEPT_NO_CONTENT, + "except has no content\n", NULL, NULL); + } + while (child != NULL) { + tmp2 = xmlRelaxNGParsePattern(ctxt, child); + if (tmp2 != NULL) { + if (last == NULL) { + except->content = last = tmp2; + } else { + last->next = tmp2; + last = tmp2; + } + } + child = child->next; + } + content = content->next; + } + /* + * Check there is no unhandled data + */ + if (content != NULL) { + xmlRngPErr(ctxt, content, XML_RNGP_DATA_CONTENT, + "Element data has unexpected content %s\n", + content->name, NULL); + } + + return (def); +} + +static const xmlChar *invalidName = BAD_CAST "\1"; + +/** + * xmlRelaxNGCompareNameClasses: + * @defs1: the first element/attribute defs + * @defs2: the second element/attribute defs + * @name: the restriction on the name + * @ns: the restriction on the namespace + * + * Compare the 2 lists of element definitions. The comparison is + * that if both lists do not accept the same QNames, it returns 1 + * If the 2 lists can accept the same QName the comparison returns 0 + * + * Returns 1 distinct, 0 if equal + */ +static int +xmlRelaxNGCompareNameClasses(xmlRelaxNGDefinePtr def1, + xmlRelaxNGDefinePtr def2) +{ + int ret = 1; + xmlNode node; + xmlNs ns; + xmlRelaxNGValidCtxt ctxt; + + memset(&ctxt, 0, sizeof(xmlRelaxNGValidCtxt)); + + ctxt.flags = FLAGS_IGNORABLE | FLAGS_NOERROR; + + if ((def1->type == XML_RELAXNG_ELEMENT) || + (def1->type == XML_RELAXNG_ATTRIBUTE)) { + if (def2->type == XML_RELAXNG_TEXT) + return (1); + if (def1->name != NULL) { + node.name = def1->name; + } else { + node.name = invalidName; + } + if (def1->ns != NULL) { + if (def1->ns[0] == 0) { + node.ns = NULL; + } else { + node.ns = &ns; + ns.href = def1->ns; + } + } else { + node.ns = NULL; + } + if (xmlRelaxNGElementMatch(&ctxt, def2, &node)) { + if (def1->nameClass != NULL) { + ret = xmlRelaxNGCompareNameClasses(def1->nameClass, def2); + } else { + ret = 0; + } + } else { + ret = 1; + } + } else if (def1->type == XML_RELAXNG_TEXT) { + if (def2->type == XML_RELAXNG_TEXT) + return (0); + return (1); + } else if (def1->type == XML_RELAXNG_EXCEPT) { + ret = xmlRelaxNGCompareNameClasses(def1->content, def2); + if (ret == 0) + ret = 1; + else if (ret == 1) + ret = 0; + } else { + TODO ret = 0; + } + if (ret == 0) + return (ret); + if ((def2->type == XML_RELAXNG_ELEMENT) || + (def2->type == XML_RELAXNG_ATTRIBUTE)) { + if (def2->name != NULL) { + node.name = def2->name; + } else { + node.name = invalidName; + } + node.ns = &ns; + if (def2->ns != NULL) { + if (def2->ns[0] == 0) { + node.ns = NULL; + } else { + ns.href = def2->ns; + } + } else { + ns.href = invalidName; + } + if (xmlRelaxNGElementMatch(&ctxt, def1, &node)) { + if (def2->nameClass != NULL) { + ret = xmlRelaxNGCompareNameClasses(def2->nameClass, def1); + } else { + ret = 0; + } + } else { + ret = 1; + } + } else { + TODO ret = 0; + } + + return (ret); +} + +/** + * xmlRelaxNGCompareElemDefLists: + * @ctxt: a Relax-NG parser context + * @defs1: the first list of element/attribute defs + * @defs2: the second list of element/attribute defs + * + * Compare the 2 lists of element or attribute definitions. The comparison + * is that if both lists do not accept the same QNames, it returns 1 + * If the 2 lists can accept the same QName the comparison returns 0 + * + * Returns 1 distinct, 0 if equal + */ +static int +xmlRelaxNGCompareElemDefLists(xmlRelaxNGParserCtxtPtr ctxt + ATTRIBUTE_UNUSED, xmlRelaxNGDefinePtr * def1, + xmlRelaxNGDefinePtr * def2) +{ + xmlRelaxNGDefinePtr *basedef2 = def2; + + if ((def1 == NULL) || (def2 == NULL)) + return (1); + if ((*def1 == NULL) || (*def2 == NULL)) + return (1); + while (*def1 != NULL) { + while ((*def2) != NULL) { + if (xmlRelaxNGCompareNameClasses(*def1, *def2) == 0) + return (0); + def2++; + } + def2 = basedef2; + def1++; + } + return (1); +} + +/** + * xmlRelaxNGGenerateAttributes: + * @ctxt: a Relax-NG parser context + * @def: the definition definition + * + * Check if the definition can only generate attributes + * + * Returns 1 if yes, 0 if no and -1 in case of error. + */ +static int +xmlRelaxNGGenerateAttributes(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr def) +{ + xmlRelaxNGDefinePtr parent, cur, tmp; + + /* + * Don't run that check in case of error. Infinite recursion + * becomes possible. + */ + if (ctxt->nbErrors != 0) + return (-1); + + parent = NULL; + cur = def; + while (cur != NULL) { + if ((cur->type == XML_RELAXNG_ELEMENT) || + (cur->type == XML_RELAXNG_TEXT) || + (cur->type == XML_RELAXNG_DATATYPE) || + (cur->type == XML_RELAXNG_PARAM) || + (cur->type == XML_RELAXNG_LIST) || + (cur->type == XML_RELAXNG_VALUE) || + (cur->type == XML_RELAXNG_EMPTY)) + return (0); + if ((cur->type == XML_RELAXNG_CHOICE) || + (cur->type == XML_RELAXNG_INTERLEAVE) || + (cur->type == XML_RELAXNG_GROUP) || + (cur->type == XML_RELAXNG_ONEORMORE) || + (cur->type == XML_RELAXNG_ZEROORMORE) || + (cur->type == XML_RELAXNG_OPTIONAL) || + (cur->type == XML_RELAXNG_PARENTREF) || + (cur->type == XML_RELAXNG_EXTERNALREF) || + (cur->type == XML_RELAXNG_REF) || + (cur->type == XML_RELAXNG_DEF)) { + if (cur->content != NULL) { + parent = cur; + cur = cur->content; + tmp = cur; + while (tmp != NULL) { + tmp->parent = parent; + tmp = tmp->next; + } + continue; + } + } + if (cur == def) + break; + if (cur->next != NULL) { + cur = cur->next; + continue; + } + do { + cur = cur->parent; + if (cur == NULL) + break; + if (cur == def) + return (1); + if (cur->next != NULL) { + cur = cur->next; + break; + } + } while (cur != NULL); + } + return (1); +} + +/** + * xmlRelaxNGGetElements: + * @ctxt: a Relax-NG parser context + * @def: the definition definition + * @eora: gather elements (0), attributes (1) or elements and text (2) + * + * Compute the list of top elements a definition can generate + * + * Returns a list of elements or NULL if none was found. + */ +static xmlRelaxNGDefinePtr * +xmlRelaxNGGetElements(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr def, int eora) +{ + xmlRelaxNGDefinePtr *ret = NULL, parent, cur, tmp; + int len = 0; + int max = 0; + + /* + * Don't run that check in case of error. Infinite recursion + * becomes possible. + */ + if (ctxt->nbErrors != 0) + return (NULL); + + parent = NULL; + cur = def; + while (cur != NULL) { + if (((eora == 0) && ((cur->type == XML_RELAXNG_ELEMENT) || + (cur->type == XML_RELAXNG_TEXT))) || + ((eora == 1) && (cur->type == XML_RELAXNG_ATTRIBUTE)) || + ((eora == 2) && ((cur->type == XML_RELAXNG_DATATYPE) || + (cur->type == XML_RELAXNG_ELEMENT) || + (cur->type == XML_RELAXNG_LIST) || + (cur->type == XML_RELAXNG_TEXT) || + (cur->type == XML_RELAXNG_VALUE)))) { + if (ret == NULL) { + max = 10; + ret = (xmlRelaxNGDefinePtr *) + xmlMalloc((max + 1) * sizeof(xmlRelaxNGDefinePtr)); + if (ret == NULL) { + xmlRngPErrMemory(ctxt, "getting element list\n"); + return (NULL); + } + } else if (max <= len) { + xmlRelaxNGDefinePtr *temp; + + max *= 2; + temp = xmlRealloc(ret, + (max + 1) * sizeof(xmlRelaxNGDefinePtr)); + if (temp == NULL) { + xmlRngPErrMemory(ctxt, "getting element list\n"); + xmlFree(ret); + return (NULL); + } + ret = temp; + } + ret[len++] = cur; + ret[len] = NULL; + } else if ((cur->type == XML_RELAXNG_CHOICE) || + (cur->type == XML_RELAXNG_INTERLEAVE) || + (cur->type == XML_RELAXNG_GROUP) || + (cur->type == XML_RELAXNG_ONEORMORE) || + (cur->type == XML_RELAXNG_ZEROORMORE) || + (cur->type == XML_RELAXNG_OPTIONAL) || + (cur->type == XML_RELAXNG_PARENTREF) || + (cur->type == XML_RELAXNG_REF) || + (cur->type == XML_RELAXNG_DEF) || + (cur->type == XML_RELAXNG_EXTERNALREF)) { + /* + * Don't go within elements or attributes or string values. + * Just gather the element top list + */ + if (cur->content != NULL) { + parent = cur; + cur = cur->content; + tmp = cur; + while (tmp != NULL) { + tmp->parent = parent; + tmp = tmp->next; + } + continue; + } + } + if (cur == def) + break; + if (cur->next != NULL) { + cur = cur->next; + continue; + } + do { + cur = cur->parent; + if (cur == NULL) + break; + if (cur == def) + return (ret); + if (cur->next != NULL) { + cur = cur->next; + break; + } + } while (cur != NULL); + } + return (ret); +} + +/** + * xmlRelaxNGCheckChoiceDeterminism: + * @ctxt: a Relax-NG parser context + * @def: the choice definition + * + * Also used to find indeterministic pattern in choice + */ +static void +xmlRelaxNGCheckChoiceDeterminism(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr def) +{ + xmlRelaxNGDefinePtr **list; + xmlRelaxNGDefinePtr cur; + int nbchild = 0, i, j, ret; + int is_nullable = 0; + int is_indeterminist = 0; + xmlHashTablePtr triage = NULL; + int is_triable = 1; + + if ((def == NULL) || (def->type != XML_RELAXNG_CHOICE)) + return; + + if (def->dflags & IS_PROCESSED) + return; + + /* + * Don't run that check in case of error. Infinite recursion + * becomes possible. + */ + if (ctxt->nbErrors != 0) + return; + + is_nullable = xmlRelaxNGIsNullable(def); + + cur = def->content; + while (cur != NULL) { + nbchild++; + cur = cur->next; + } + + list = (xmlRelaxNGDefinePtr **) xmlMalloc(nbchild * + sizeof(xmlRelaxNGDefinePtr + *)); + if (list == NULL) { + xmlRngPErrMemory(ctxt, "building choice\n"); + return; + } + i = 0; + /* + * a bit strong but safe + */ + if (is_nullable == 0) { + triage = xmlHashCreate(10); + } else { + is_triable = 0; + } + cur = def->content; + while (cur != NULL) { + list[i] = xmlRelaxNGGetElements(ctxt, cur, 0); + if ((list[i] == NULL) || (list[i][0] == NULL)) { + is_triable = 0; + } else if (is_triable == 1) { + xmlRelaxNGDefinePtr *tmp; + int res; + + tmp = list[i]; + while ((*tmp != NULL) && (is_triable == 1)) { + if ((*tmp)->type == XML_RELAXNG_TEXT) { + res = xmlHashAddEntry2(triage, + BAD_CAST "#text", NULL, + (void *) cur); + if (res != 0) + is_triable = -1; + } else if (((*tmp)->type == XML_RELAXNG_ELEMENT) && + ((*tmp)->name != NULL)) { + if (((*tmp)->ns == NULL) || ((*tmp)->ns[0] == 0)) + res = xmlHashAddEntry2(triage, + (*tmp)->name, NULL, + (void *) cur); + else + res = xmlHashAddEntry2(triage, + (*tmp)->name, (*tmp)->ns, + (void *) cur); + if (res != 0) + is_triable = -1; + } else if ((*tmp)->type == XML_RELAXNG_ELEMENT) { + if (((*tmp)->ns == NULL) || ((*tmp)->ns[0] == 0)) + res = xmlHashAddEntry2(triage, + BAD_CAST "#any", NULL, + (void *) cur); + else + res = xmlHashAddEntry2(triage, + BAD_CAST "#any", (*tmp)->ns, + (void *) cur); + if (res != 0) + is_triable = -1; + } else { + is_triable = -1; + } + tmp++; + } + } + i++; + cur = cur->next; + } + + for (i = 0; i < nbchild; i++) { + if (list[i] == NULL) + continue; + for (j = 0; j < i; j++) { + if (list[j] == NULL) + continue; + ret = xmlRelaxNGCompareElemDefLists(ctxt, list[i], list[j]); + if (ret == 0) { + is_indeterminist = 1; + } + } + } + for (i = 0; i < nbchild; i++) { + if (list[i] != NULL) + xmlFree(list[i]); + } + + xmlFree(list); + if (is_indeterminist) { + def->dflags |= IS_INDETERMINIST; + } + if (is_triable == 1) { + def->dflags |= IS_TRIABLE; + def->data = triage; + } else if (triage != NULL) { + xmlHashFree(triage, NULL); + } + def->dflags |= IS_PROCESSED; +} + +/** + * xmlRelaxNGCheckGroupAttrs: + * @ctxt: a Relax-NG parser context + * @def: the group definition + * + * Detects violations of rule 7.3 + */ +static void +xmlRelaxNGCheckGroupAttrs(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr def) +{ + xmlRelaxNGDefinePtr **list; + xmlRelaxNGDefinePtr cur; + int nbchild = 0, i, j, ret; + + if ((def == NULL) || + ((def->type != XML_RELAXNG_GROUP) && + (def->type != XML_RELAXNG_ELEMENT))) + return; + + if (def->dflags & IS_PROCESSED) + return; + + /* + * Don't run that check in case of error. Infinite recursion + * becomes possible. + */ + if (ctxt->nbErrors != 0) + return; + + cur = def->attrs; + while (cur != NULL) { + nbchild++; + cur = cur->next; + } + cur = def->content; + while (cur != NULL) { + nbchild++; + cur = cur->next; + } + + list = (xmlRelaxNGDefinePtr **) xmlMalloc(nbchild * + sizeof(xmlRelaxNGDefinePtr + *)); + if (list == NULL) { + xmlRngPErrMemory(ctxt, "building group\n"); + return; + } + i = 0; + cur = def->attrs; + while (cur != NULL) { + list[i] = xmlRelaxNGGetElements(ctxt, cur, 1); + i++; + cur = cur->next; + } + cur = def->content; + while (cur != NULL) { + list[i] = xmlRelaxNGGetElements(ctxt, cur, 1); + i++; + cur = cur->next; + } + + for (i = 0; i < nbchild; i++) { + if (list[i] == NULL) + continue; + for (j = 0; j < i; j++) { + if (list[j] == NULL) + continue; + ret = xmlRelaxNGCompareElemDefLists(ctxt, list[i], list[j]); + if (ret == 0) { + xmlRngPErr(ctxt, def->node, XML_RNGP_GROUP_ATTR_CONFLICT, + "Attributes conflicts in group\n", NULL, NULL); + } + } + } + for (i = 0; i < nbchild; i++) { + if (list[i] != NULL) + xmlFree(list[i]); + } + + xmlFree(list); + def->dflags |= IS_PROCESSED; +} + +/** + * xmlRelaxNGComputeInterleaves: + * @def: the interleave definition + * @ctxt: a Relax-NG parser context + * @name: the definition name + * + * A lot of work for preprocessing interleave definitions + * is potentially needed to get a decent execution speed at runtime + * - trying to get a total order on the element nodes generated + * by the interleaves, order the list of interleave definitions + * following that order. + * - if <text/> is used to handle mixed content, it is better to + * flag this in the define and simplify the runtime checking + * algorithm + */ +static void +xmlRelaxNGComputeInterleaves(void *payload, void *data, + const xmlChar * name ATTRIBUTE_UNUSED) +{ + xmlRelaxNGDefinePtr def = (xmlRelaxNGDefinePtr) payload; + xmlRelaxNGParserCtxtPtr ctxt = (xmlRelaxNGParserCtxtPtr) data; + xmlRelaxNGDefinePtr cur, *tmp; + + xmlRelaxNGPartitionPtr partitions = NULL; + xmlRelaxNGInterleaveGroupPtr *groups = NULL; + xmlRelaxNGInterleaveGroupPtr group; + int i, j, ret, res; + int nbgroups = 0; + int nbchild = 0; + int is_mixed = 0; + int is_determinist = 1; + + /* + * Don't run that check in case of error. Infinite recursion + * becomes possible. + */ + if (ctxt->nbErrors != 0) + return; + +#ifdef DEBUG_INTERLEAVE + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGComputeInterleaves(%s)\n", name); +#endif + cur = def->content; + while (cur != NULL) { + nbchild++; + cur = cur->next; + } + +#ifdef DEBUG_INTERLEAVE + xmlGenericError(xmlGenericErrorContext, " %d child\n", nbchild); +#endif + groups = (xmlRelaxNGInterleaveGroupPtr *) + xmlMalloc(nbchild * sizeof(xmlRelaxNGInterleaveGroupPtr)); + if (groups == NULL) + goto error; + cur = def->content; + while (cur != NULL) { + groups[nbgroups] = (xmlRelaxNGInterleaveGroupPtr) + xmlMalloc(sizeof(xmlRelaxNGInterleaveGroup)); + if (groups[nbgroups] == NULL) + goto error; + if (cur->type == XML_RELAXNG_TEXT) + is_mixed++; + groups[nbgroups]->rule = cur; + groups[nbgroups]->defs = xmlRelaxNGGetElements(ctxt, cur, 2); + groups[nbgroups]->attrs = xmlRelaxNGGetElements(ctxt, cur, 1); + nbgroups++; + cur = cur->next; + } +#ifdef DEBUG_INTERLEAVE + xmlGenericError(xmlGenericErrorContext, " %d groups\n", nbgroups); +#endif + + /* + * Let's check that all rules makes a partitions according to 7.4 + */ + partitions = (xmlRelaxNGPartitionPtr) + xmlMalloc(sizeof(xmlRelaxNGPartition)); + if (partitions == NULL) + goto error; + memset(partitions, 0, sizeof(xmlRelaxNGPartition)); + partitions->nbgroups = nbgroups; + partitions->triage = xmlHashCreate(nbgroups); + for (i = 0; i < nbgroups; i++) { + group = groups[i]; + for (j = i + 1; j < nbgroups; j++) { + if (groups[j] == NULL) + continue; + + ret = xmlRelaxNGCompareElemDefLists(ctxt, group->defs, + groups[j]->defs); + if (ret == 0) { + xmlRngPErr(ctxt, def->node, XML_RNGP_ELEM_TEXT_CONFLICT, + "Element or text conflicts in interleave\n", + NULL, NULL); + } + ret = xmlRelaxNGCompareElemDefLists(ctxt, group->attrs, + groups[j]->attrs); + if (ret == 0) { + xmlRngPErr(ctxt, def->node, XML_RNGP_ATTR_CONFLICT, + "Attributes conflicts in interleave\n", NULL, + NULL); + } + } + tmp = group->defs; + if ((tmp != NULL) && (*tmp != NULL)) { + while (*tmp != NULL) { + if ((*tmp)->type == XML_RELAXNG_TEXT) { + res = xmlHashAddEntry2(partitions->triage, + BAD_CAST "#text", NULL, + (void *) (ptrdiff_t) (i + 1)); + if (res != 0) + is_determinist = -1; + } else if (((*tmp)->type == XML_RELAXNG_ELEMENT) && + ((*tmp)->name != NULL)) { + if (((*tmp)->ns == NULL) || ((*tmp)->ns[0] == 0)) + res = xmlHashAddEntry2(partitions->triage, + (*tmp)->name, NULL, + (void *) (ptrdiff_t) (i + 1)); + else + res = xmlHashAddEntry2(partitions->triage, + (*tmp)->name, (*tmp)->ns, + (void *) (ptrdiff_t) (i + 1)); + if (res != 0) + is_determinist = -1; + } else if ((*tmp)->type == XML_RELAXNG_ELEMENT) { + if (((*tmp)->ns == NULL) || ((*tmp)->ns[0] == 0)) + res = xmlHashAddEntry2(partitions->triage, + BAD_CAST "#any", NULL, + (void *) (ptrdiff_t) (i + 1)); + else + res = xmlHashAddEntry2(partitions->triage, + BAD_CAST "#any", (*tmp)->ns, + (void *) (ptrdiff_t) (i + 1)); + if ((*tmp)->nameClass != NULL) + is_determinist = 2; + if (res != 0) + is_determinist = -1; + } else { + is_determinist = -1; + } + tmp++; + } + } else { + is_determinist = 0; + } + } + partitions->groups = groups; + + /* + * and save the partition list back in the def + */ + def->data = partitions; + if (is_mixed != 0) + def->dflags |= IS_MIXED; + if (is_determinist == 1) + partitions->flags = IS_DETERMINIST; + if (is_determinist == 2) + partitions->flags = IS_DETERMINIST | IS_NEEDCHECK; + return; + + error: + xmlRngPErrMemory(ctxt, "in interleave computation\n"); + if (groups != NULL) { + for (i = 0; i < nbgroups; i++) + if (groups[i] != NULL) { + if (groups[i]->defs != NULL) + xmlFree(groups[i]->defs); + xmlFree(groups[i]); + } + xmlFree(groups); + } + xmlRelaxNGFreePartition(partitions); +} + +/** + * xmlRelaxNGParseInterleave: + * @ctxt: a Relax-NG parser context + * @node: the data node. + * + * parse the content of a RelaxNG interleave node. + * + * Returns the definition pointer or NULL in case of error + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParseInterleave(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDefinePtr def = NULL; + xmlRelaxNGDefinePtr last = NULL, cur; + xmlNodePtr child; + + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) { + return (NULL); + } + def->type = XML_RELAXNG_INTERLEAVE; + + if (ctxt->interleaves == NULL) + ctxt->interleaves = xmlHashCreate(10); + if (ctxt->interleaves == NULL) { + xmlRngPErrMemory(ctxt, "create interleaves\n"); + } else { + char name[32]; + + snprintf(name, 32, "interleave%d", ctxt->nbInterleaves++); + if (xmlHashAddEntry(ctxt->interleaves, BAD_CAST name, def) < 0) { + xmlRngPErr(ctxt, node, XML_RNGP_INTERLEAVE_ADD, + "Failed to add %s to hash table\n", + (const xmlChar *) name, NULL); + } + } + child = node->children; + if (child == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_INTERLEAVE_NO_CONTENT, + "Element interleave is empty\n", NULL, NULL); + } + while (child != NULL) { + if (IS_RELAXNG(child, "element")) { + cur = xmlRelaxNGParseElement(ctxt, child); + } else { + cur = xmlRelaxNGParsePattern(ctxt, child); + } + if (cur != NULL) { + cur->parent = def; + if (last == NULL) { + def->content = last = cur; + } else { + last->next = cur; + last = cur; + } + } + child = child->next; + } + + return (def); +} + +/** + * xmlRelaxNGParseInclude: + * @ctxt: a Relax-NG parser context + * @node: the include node + * + * Integrate the content of an include node in the current grammar + * + * Returns 0 in case of success or -1 in case of error + */ +static int +xmlRelaxNGParseInclude(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGIncludePtr incl; + xmlNodePtr root; + int ret = 0, tmp; + + incl = node->psvi; + if (incl == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_INCLUDE_EMPTY, + "Include node has no data\n", NULL, NULL); + return (-1); + } + root = xmlDocGetRootElement(incl->doc); + if (root == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY, "Include document is empty\n", + NULL, NULL); + return (-1); + } + if (!xmlStrEqual(root->name, BAD_CAST "grammar")) { + xmlRngPErr(ctxt, node, XML_RNGP_GRAMMAR_MISSING, + "Include document root is not a grammar\n", NULL, NULL); + return (-1); + } + + /* + * Merge the definition from both the include and the internal list + */ + if (root->children != NULL) { + tmp = xmlRelaxNGParseGrammarContent(ctxt, root->children); + if (tmp != 0) + ret = -1; + } + if (node->children != NULL) { + tmp = xmlRelaxNGParseGrammarContent(ctxt, node->children); + if (tmp != 0) + ret = -1; + } + return (ret); +} + +/** + * xmlRelaxNGParseDefine: + * @ctxt: a Relax-NG parser context + * @node: the define node + * + * parse the content of a RelaxNG define element node. + * + * Returns 0 in case of success or -1 in case of error + */ +static int +xmlRelaxNGParseDefine(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlChar *name; + int ret = 0, tmp; + xmlRelaxNGDefinePtr def; + const xmlChar *olddefine; + + name = xmlGetProp(node, BAD_CAST "name"); + if (name == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_DEFINE_NAME_MISSING, + "define has no name\n", NULL, NULL); + } else { + xmlRelaxNGNormExtSpace(name); + if (xmlValidateNCName(name, 0)) { + xmlRngPErr(ctxt, node, XML_RNGP_INVALID_DEFINE_NAME, + "define name '%s' is not an NCName\n", name, NULL); + } + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) { + xmlFree(name); + return (-1); + } + def->type = XML_RELAXNG_DEF; + def->name = name; + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_DEFINE_EMPTY, + "define has no children\n", NULL, NULL); + } else { + olddefine = ctxt->define; + ctxt->define = name; + def->content = + xmlRelaxNGParsePatterns(ctxt, node->children, 0); + ctxt->define = olddefine; + } + if (ctxt->grammar->defs == NULL) + ctxt->grammar->defs = xmlHashCreate(10); + if (ctxt->grammar->defs == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_DEFINE_CREATE_FAILED, + "Could not create definition hash\n", NULL, NULL); + ret = -1; + } else { + tmp = xmlHashAddEntry(ctxt->grammar->defs, name, def); + if (tmp < 0) { + xmlRelaxNGDefinePtr prev; + + prev = xmlHashLookup(ctxt->grammar->defs, name); + if (prev == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_DEFINE_CREATE_FAILED, + "Internal error on define aggregation of %s\n", + name, NULL); + ret = -1; + } else { + while (prev->nextHash != NULL) + prev = prev->nextHash; + prev->nextHash = def; + } + } + } + } + return (ret); +} + +/** + * xmlRelaxNGParseImportRef: + * @payload: the parser context + * @data: the current grammar + * @name: the reference name + * + * Import import one references into the current grammar + */ +static void +xmlRelaxNGParseImportRef(void *payload, void *data, const xmlChar *name) { + xmlRelaxNGParserCtxtPtr ctxt = (xmlRelaxNGParserCtxtPtr) data; + xmlRelaxNGDefinePtr def = (xmlRelaxNGDefinePtr) payload; + int tmp; + + def->dflags |= IS_EXTERNAL_REF; + + tmp = xmlHashAddEntry(ctxt->grammar->refs, name, def); + if (tmp < 0) { + xmlRelaxNGDefinePtr prev; + + prev = (xmlRelaxNGDefinePtr) + xmlHashLookup(ctxt->grammar->refs, def->name); + if (prev == NULL) { + if (def->name != NULL) { + xmlRngPErr(ctxt, NULL, XML_RNGP_REF_CREATE_FAILED, + "Error refs definitions '%s'\n", + def->name, NULL); + } else { + xmlRngPErr(ctxt, NULL, XML_RNGP_REF_CREATE_FAILED, + "Error refs definitions\n", + NULL, NULL); + } + } else { + def->nextHash = prev->nextHash; + prev->nextHash = def; + } + } +} + +/** + * xmlRelaxNGParseImportRefs: + * @ctxt: the parser context + * @grammar: the sub grammar + * + * Import references from the subgrammar into the current grammar + * + * Returns 0 in case of success, -1 in case of failure + */ +static int +xmlRelaxNGParseImportRefs(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGGrammarPtr grammar) { + if ((ctxt == NULL) || (grammar == NULL) || (ctxt->grammar == NULL)) + return(-1); + if (grammar->refs == NULL) + return(0); + if (ctxt->grammar->refs == NULL) + ctxt->grammar->refs = xmlHashCreate(10); + if (ctxt->grammar->refs == NULL) { + xmlRngPErr(ctxt, NULL, XML_RNGP_REF_CREATE_FAILED, + "Could not create references hash\n", NULL, NULL); + return(-1); + } + xmlHashScan(grammar->refs, xmlRelaxNGParseImportRef, ctxt); + return(0); +} + +/** + * xmlRelaxNGProcessExternalRef: + * @ctxt: the parser context + * @node: the externalRef node + * + * Process and compile an externalRef node + * + * Returns the xmlRelaxNGDefinePtr or NULL in case of error + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGProcessExternalRef(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDocumentPtr docu; + xmlNodePtr root, tmp; + xmlChar *ns; + int newNs = 0, oldflags; + xmlRelaxNGDefinePtr def; + + docu = node->psvi; + if (docu != NULL) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_EXTERNALREF; + + if (docu->content == NULL) { + /* + * Then do the parsing for good + */ + root = xmlDocGetRootElement(docu->doc); + if (root == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EXTERNALREF_EMTPY, + "xmlRelaxNGParse: %s is empty\n", ctxt->URL, + NULL); + return (NULL); + } + /* + * ns transmission rules + */ + ns = xmlGetProp(root, BAD_CAST "ns"); + if (ns == NULL) { + tmp = node; + while ((tmp != NULL) && (tmp->type == XML_ELEMENT_NODE)) { + ns = xmlGetProp(tmp, BAD_CAST "ns"); + if (ns != NULL) { + break; + } + tmp = tmp->parent; + } + if (ns != NULL) { + xmlSetProp(root, BAD_CAST "ns", ns); + newNs = 1; + xmlFree(ns); + } + } else { + xmlFree(ns); + } + + /* + * Parsing to get a precompiled schemas. + */ + oldflags = ctxt->flags; + ctxt->flags |= XML_RELAXNG_IN_EXTERNALREF; + docu->schema = xmlRelaxNGParseDocument(ctxt, root); + ctxt->flags = oldflags; + if ((docu->schema != NULL) && + (docu->schema->topgrammar != NULL)) { + docu->content = docu->schema->topgrammar->start; + if (docu->schema->topgrammar->refs) + xmlRelaxNGParseImportRefs(ctxt, docu->schema->topgrammar); + } + + /* + * the externalRef may be reused in a different ns context + */ + if (newNs == 1) { + xmlUnsetProp(root, BAD_CAST "ns"); + } + } + def->content = docu->content; + } else { + def = NULL; + } + return (def); +} + +/** + * xmlRelaxNGParsePattern: + * @ctxt: a Relax-NG parser context + * @node: the pattern node. + * + * parse the content of a RelaxNG pattern node. + * + * Returns the definition pointer or NULL in case of error or if no + * pattern is generated. + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParsePattern(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDefinePtr def = NULL; + + if (node == NULL) { + return (NULL); + } + if (IS_RELAXNG(node, "element")) { + def = xmlRelaxNGParseElement(ctxt, node); + } else if (IS_RELAXNG(node, "attribute")) { + def = xmlRelaxNGParseAttribute(ctxt, node); + } else if (IS_RELAXNG(node, "empty")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_EMPTY; + if (node->children != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_NOT_EMPTY, + "empty: had a child node\n", NULL, NULL); + } + } else if (IS_RELAXNG(node, "text")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_TEXT; + if (node->children != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_TEXT_HAS_CHILD, + "text: had a child node\n", NULL, NULL); + } + } else if (IS_RELAXNG(node, "zeroOrMore")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_ZEROORMORE; + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_CONSTRUCT, + "Element %s is empty\n", node->name, NULL); + } else { + def->content = + xmlRelaxNGParsePatterns(ctxt, node->children, 1); + } + } else if (IS_RELAXNG(node, "oneOrMore")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_ONEORMORE; + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_CONSTRUCT, + "Element %s is empty\n", node->name, NULL); + } else { + def->content = + xmlRelaxNGParsePatterns(ctxt, node->children, 1); + } + } else if (IS_RELAXNG(node, "optional")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_OPTIONAL; + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_CONSTRUCT, + "Element %s is empty\n", node->name, NULL); + } else { + def->content = + xmlRelaxNGParsePatterns(ctxt, node->children, 1); + } + } else if (IS_RELAXNG(node, "choice")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_CHOICE; + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_CONSTRUCT, + "Element %s is empty\n", node->name, NULL); + } else { + def->content = + xmlRelaxNGParsePatterns(ctxt, node->children, 0); + } + } else if (IS_RELAXNG(node, "group")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_GROUP; + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_CONSTRUCT, + "Element %s is empty\n", node->name, NULL); + } else { + def->content = + xmlRelaxNGParsePatterns(ctxt, node->children, 0); + } + } else if (IS_RELAXNG(node, "ref")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_REF; + def->name = xmlGetProp(node, BAD_CAST "name"); + if (def->name == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_REF_NO_NAME, "ref has no name\n", + NULL, NULL); + } else { + xmlRelaxNGNormExtSpace(def->name); + if (xmlValidateNCName(def->name, 0)) { + xmlRngPErr(ctxt, node, XML_RNGP_REF_NAME_INVALID, + "ref name '%s' is not an NCName\n", def->name, + NULL); + } + } + if (node->children != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_REF_NOT_EMPTY, "ref is not empty\n", + NULL, NULL); + } + if (ctxt->grammar->refs == NULL) + ctxt->grammar->refs = xmlHashCreate(10); + if (ctxt->grammar->refs == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_REF_CREATE_FAILED, + "Could not create references hash\n", NULL, NULL); + def = NULL; + } else { + int tmp; + + tmp = xmlHashAddEntry(ctxt->grammar->refs, def->name, def); + if (tmp < 0) { + xmlRelaxNGDefinePtr prev; + + prev = (xmlRelaxNGDefinePtr) + xmlHashLookup(ctxt->grammar->refs, def->name); + if (prev == NULL) { + if (def->name != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_REF_CREATE_FAILED, + "Error refs definitions '%s'\n", + def->name, NULL); + } else { + xmlRngPErr(ctxt, node, XML_RNGP_REF_CREATE_FAILED, + "Error refs definitions\n", + NULL, NULL); + } + def = NULL; + } else { + def->nextHash = prev->nextHash; + prev->nextHash = def; + } + } + } + } else if (IS_RELAXNG(node, "data")) { + def = xmlRelaxNGParseData(ctxt, node); + } else if (IS_RELAXNG(node, "value")) { + def = xmlRelaxNGParseValue(ctxt, node); + } else if (IS_RELAXNG(node, "list")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_LIST; + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_CONSTRUCT, + "Element %s is empty\n", node->name, NULL); + } else { + def->content = + xmlRelaxNGParsePatterns(ctxt, node->children, 0); + } + } else if (IS_RELAXNG(node, "interleave")) { + def = xmlRelaxNGParseInterleave(ctxt, node); + } else if (IS_RELAXNG(node, "externalRef")) { + def = xmlRelaxNGProcessExternalRef(ctxt, node); + } else if (IS_RELAXNG(node, "notAllowed")) { + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_NOT_ALLOWED; + if (node->children != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_NOTALLOWED_NOT_EMPTY, + "xmlRelaxNGParse: notAllowed element is not empty\n", + NULL, NULL); + } + } else if (IS_RELAXNG(node, "grammar")) { + xmlRelaxNGGrammarPtr grammar, old; + xmlRelaxNGGrammarPtr oldparent; + +#ifdef DEBUG_GRAMMAR + xmlGenericError(xmlGenericErrorContext, + "Found <grammar> pattern\n"); +#endif + + oldparent = ctxt->parentgrammar; + old = ctxt->grammar; + ctxt->parentgrammar = old; + grammar = xmlRelaxNGParseGrammar(ctxt, node->children); + if (old != NULL) { + ctxt->grammar = old; + ctxt->parentgrammar = oldparent; +#if 0 + if (grammar != NULL) { + grammar->next = old->next; + old->next = grammar; + } +#endif + } + if (grammar != NULL) + def = grammar->start; + else + def = NULL; + } else if (IS_RELAXNG(node, "parentRef")) { + if (ctxt->parentgrammar == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_PARENTREF_NO_PARENT, + "Use of parentRef without a parent grammar\n", NULL, + NULL); + return (NULL); + } + def = xmlRelaxNGNewDefine(ctxt, node); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_PARENTREF; + def->name = xmlGetProp(node, BAD_CAST "name"); + if (def->name == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_PARENTREF_NO_NAME, + "parentRef has no name\n", NULL, NULL); + } else { + xmlRelaxNGNormExtSpace(def->name); + if (xmlValidateNCName(def->name, 0)) { + xmlRngPErr(ctxt, node, XML_RNGP_PARENTREF_NAME_INVALID, + "parentRef name '%s' is not an NCName\n", + def->name, NULL); + } + } + if (node->children != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_PARENTREF_NOT_EMPTY, + "parentRef is not empty\n", NULL, NULL); + } + if (ctxt->parentgrammar->refs == NULL) + ctxt->parentgrammar->refs = xmlHashCreate(10); + if (ctxt->parentgrammar->refs == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_PARENTREF_CREATE_FAILED, + "Could not create references hash\n", NULL, NULL); + def = NULL; + } else if (def->name != NULL) { + int tmp; + + tmp = + xmlHashAddEntry(ctxt->parentgrammar->refs, def->name, def); + if (tmp < 0) { + xmlRelaxNGDefinePtr prev; + + prev = (xmlRelaxNGDefinePtr) + xmlHashLookup(ctxt->parentgrammar->refs, def->name); + if (prev == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_PARENTREF_CREATE_FAILED, + "Internal error parentRef definitions '%s'\n", + def->name, NULL); + def = NULL; + } else { + def->nextHash = prev->nextHash; + prev->nextHash = def; + } + } + } + } else if (IS_RELAXNG(node, "mixed")) { + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EMPTY_CONSTRUCT, "Mixed is empty\n", + NULL, NULL); + def = NULL; + } else { + def = xmlRelaxNGParseInterleave(ctxt, node); + if (def != NULL) { + xmlRelaxNGDefinePtr tmp; + + if ((def->content != NULL) && (def->content->next != NULL)) { + tmp = xmlRelaxNGNewDefine(ctxt, node); + if (tmp != NULL) { + tmp->type = XML_RELAXNG_GROUP; + tmp->content = def->content; + def->content = tmp; + } + } + + tmp = xmlRelaxNGNewDefine(ctxt, node); + if (tmp == NULL) + return (def); + tmp->type = XML_RELAXNG_TEXT; + tmp->next = def->content; + def->content = tmp; + } + } + } else { + xmlRngPErr(ctxt, node, XML_RNGP_UNKNOWN_CONSTRUCT, + "Unexpected node %s is not a pattern\n", node->name, + NULL); + def = NULL; + } + return (def); +} + +/** + * xmlRelaxNGParseAttribute: + * @ctxt: a Relax-NG parser context + * @node: the element node + * + * parse the content of a RelaxNG attribute node. + * + * Returns the definition pointer or NULL in case of error. + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParseAttribute(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDefinePtr ret, cur; + xmlNodePtr child; + int old_flags; + + ret = xmlRelaxNGNewDefine(ctxt, node); + if (ret == NULL) + return (NULL); + ret->type = XML_RELAXNG_ATTRIBUTE; + ret->parent = ctxt->def; + child = node->children; + if (child == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_ATTRIBUTE_EMPTY, + "xmlRelaxNGParseattribute: attribute has no children\n", + NULL, NULL); + return (ret); + } + old_flags = ctxt->flags; + ctxt->flags |= XML_RELAXNG_IN_ATTRIBUTE; + cur = xmlRelaxNGParseNameClass(ctxt, child, ret); + if (cur != NULL) + child = child->next; + + if (child != NULL) { + cur = xmlRelaxNGParsePattern(ctxt, child); + if (cur != NULL) { + switch (cur->type) { + case XML_RELAXNG_EMPTY: + case XML_RELAXNG_NOT_ALLOWED: + case XML_RELAXNG_TEXT: + case XML_RELAXNG_ELEMENT: + case XML_RELAXNG_DATATYPE: + case XML_RELAXNG_VALUE: + case XML_RELAXNG_LIST: + case XML_RELAXNG_REF: + case XML_RELAXNG_PARENTREF: + case XML_RELAXNG_EXTERNALREF: + case XML_RELAXNG_DEF: + case XML_RELAXNG_ONEORMORE: + case XML_RELAXNG_ZEROORMORE: + case XML_RELAXNG_OPTIONAL: + case XML_RELAXNG_CHOICE: + case XML_RELAXNG_GROUP: + case XML_RELAXNG_INTERLEAVE: + case XML_RELAXNG_ATTRIBUTE: + ret->content = cur; + cur->parent = ret; + break; + case XML_RELAXNG_START: + case XML_RELAXNG_PARAM: + case XML_RELAXNG_EXCEPT: + xmlRngPErr(ctxt, node, XML_RNGP_ATTRIBUTE_CONTENT, + "attribute has invalid content\n", NULL, + NULL); + break; + case XML_RELAXNG_NOOP: + xmlRngPErr(ctxt, node, XML_RNGP_ATTRIBUTE_NOOP, + "RNG Internal error, noop found in attribute\n", + NULL, NULL); + break; + } + } + child = child->next; + } + if (child != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_ATTRIBUTE_CHILDREN, + "attribute has multiple children\n", NULL, NULL); + } + ctxt->flags = old_flags; + return (ret); +} + +/** + * xmlRelaxNGParseExceptNameClass: + * @ctxt: a Relax-NG parser context + * @node: the except node + * @attr: 1 if within an attribute, 0 if within an element + * + * parse the content of a RelaxNG nameClass node. + * + * Returns the definition pointer or NULL in case of error. + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParseExceptNameClass(xmlRelaxNGParserCtxtPtr ctxt, + xmlNodePtr node, int attr) +{ + xmlRelaxNGDefinePtr ret, cur, last = NULL; + xmlNodePtr child; + + if (!IS_RELAXNG(node, "except")) { + xmlRngPErr(ctxt, node, XML_RNGP_EXCEPT_MISSING, + "Expecting an except node\n", NULL, NULL); + return (NULL); + } + if (node->next != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EXCEPT_MULTIPLE, + "exceptNameClass allows only a single except node\n", + NULL, NULL); + } + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_EXCEPT_EMPTY, "except has no content\n", + NULL, NULL); + return (NULL); + } + + ret = xmlRelaxNGNewDefine(ctxt, node); + if (ret == NULL) + return (NULL); + ret->type = XML_RELAXNG_EXCEPT; + child = node->children; + while (child != NULL) { + cur = xmlRelaxNGNewDefine(ctxt, child); + if (cur == NULL) + break; + if (attr) + cur->type = XML_RELAXNG_ATTRIBUTE; + else + cur->type = XML_RELAXNG_ELEMENT; + + if (xmlRelaxNGParseNameClass(ctxt, child, cur) != NULL) { + if (last == NULL) { + ret->content = cur; + } else { + last->next = cur; + } + last = cur; + } + child = child->next; + } + + return (ret); +} + +/** + * xmlRelaxNGParseNameClass: + * @ctxt: a Relax-NG parser context + * @node: the nameClass node + * @def: the current definition + * + * parse the content of a RelaxNG nameClass node. + * + * Returns the definition pointer or NULL in case of error. + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParseNameClass(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node, + xmlRelaxNGDefinePtr def) +{ + xmlRelaxNGDefinePtr ret, tmp; + xmlChar *val; + + ret = def; + if ((IS_RELAXNG(node, "name")) || (IS_RELAXNG(node, "anyName")) || + (IS_RELAXNG(node, "nsName"))) { + if ((def->type != XML_RELAXNG_ELEMENT) && + (def->type != XML_RELAXNG_ATTRIBUTE)) { + ret = xmlRelaxNGNewDefine(ctxt, node); + if (ret == NULL) + return (NULL); + ret->parent = def; + if (ctxt->flags & XML_RELAXNG_IN_ATTRIBUTE) + ret->type = XML_RELAXNG_ATTRIBUTE; + else + ret->type = XML_RELAXNG_ELEMENT; + } + } + if (IS_RELAXNG(node, "name")) { + val = xmlNodeGetContent(node); + xmlRelaxNGNormExtSpace(val); + if (xmlValidateNCName(val, 0)) { + if (node->parent != NULL) + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_NAME, + "Element %s name '%s' is not an NCName\n", + node->parent->name, val); + else + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_NAME, + "name '%s' is not an NCName\n", + val, NULL); + } + ret->name = val; + val = xmlGetProp(node, BAD_CAST "ns"); + ret->ns = val; + if ((ctxt->flags & XML_RELAXNG_IN_ATTRIBUTE) && + (val != NULL) && + (xmlStrEqual(val, BAD_CAST "http://www.w3.org/2000/xmlns"))) { + xmlRngPErr(ctxt, node, XML_RNGP_XML_NS, + "Attribute with namespace '%s' is not allowed\n", + val, NULL); + } + if ((ctxt->flags & XML_RELAXNG_IN_ATTRIBUTE) && + (val != NULL) && + (val[0] == 0) && (xmlStrEqual(ret->name, BAD_CAST "xmlns"))) { + xmlRngPErr(ctxt, node, XML_RNGP_XMLNS_NAME, + "Attribute with QName 'xmlns' is not allowed\n", + val, NULL); + } + } else if (IS_RELAXNG(node, "anyName")) { + ret->name = NULL; + ret->ns = NULL; + if (node->children != NULL) { + ret->nameClass = + xmlRelaxNGParseExceptNameClass(ctxt, node->children, + (def->type == + XML_RELAXNG_ATTRIBUTE)); + } + } else if (IS_RELAXNG(node, "nsName")) { + ret->name = NULL; + ret->ns = xmlGetProp(node, BAD_CAST "ns"); + if (ret->ns == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_NSNAME_NO_NS, + "nsName has no ns attribute\n", NULL, NULL); + } + if ((ctxt->flags & XML_RELAXNG_IN_ATTRIBUTE) && + (ret->ns != NULL) && + (xmlStrEqual + (ret->ns, BAD_CAST "http://www.w3.org/2000/xmlns"))) { + xmlRngPErr(ctxt, node, XML_RNGP_XML_NS, + "Attribute with namespace '%s' is not allowed\n", + ret->ns, NULL); + } + if (node->children != NULL) { + ret->nameClass = + xmlRelaxNGParseExceptNameClass(ctxt, node->children, + (def->type == + XML_RELAXNG_ATTRIBUTE)); + } + } else if (IS_RELAXNG(node, "choice")) { + xmlNodePtr child; + xmlRelaxNGDefinePtr last = NULL; + + if (def->type == XML_RELAXNG_CHOICE) { + ret = def; + } else { + ret = xmlRelaxNGNewDefine(ctxt, node); + if (ret == NULL) + return (NULL); + ret->parent = def; + ret->type = XML_RELAXNG_CHOICE; + } + + if (node->children == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_CHOICE_EMPTY, + "Element choice is empty\n", NULL, NULL); + } else { + + child = node->children; + while (child != NULL) { + tmp = xmlRelaxNGParseNameClass(ctxt, child, ret); + if (tmp != NULL) { + if (last == NULL) { + last = tmp; + } else { + last->next = tmp; + last = tmp; + } + } + child = child->next; + } + } + } else { + xmlRngPErr(ctxt, node, XML_RNGP_CHOICE_CONTENT, + "expecting name, anyName, nsName or choice : got %s\n", + (node == NULL ? (const xmlChar *) "nothing" : node->name), + NULL); + return (NULL); + } + if (ret != def) { + if (def->nameClass == NULL) { + def->nameClass = ret; + } else { + tmp = def->nameClass; + while (tmp->next != NULL) { + tmp = tmp->next; + } + tmp->next = ret; + } + } + return (ret); +} + +/** + * xmlRelaxNGParseElement: + * @ctxt: a Relax-NG parser context + * @node: the element node + * + * parse the content of a RelaxNG element node. + * + * Returns the definition pointer or NULL in case of error. + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParseElement(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGDefinePtr ret, cur, last; + xmlNodePtr child; + const xmlChar *olddefine; + + ret = xmlRelaxNGNewDefine(ctxt, node); + if (ret == NULL) + return (NULL); + ret->type = XML_RELAXNG_ELEMENT; + ret->parent = ctxt->def; + child = node->children; + if (child == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_EMPTY, + "xmlRelaxNGParseElement: element has no children\n", + NULL, NULL); + return (ret); + } + cur = xmlRelaxNGParseNameClass(ctxt, child, ret); + if (cur != NULL) + child = child->next; + + if (child == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_NO_CONTENT, + "xmlRelaxNGParseElement: element has no content\n", + NULL, NULL); + return (ret); + } + olddefine = ctxt->define; + ctxt->define = NULL; + last = NULL; + while (child != NULL) { + cur = xmlRelaxNGParsePattern(ctxt, child); + if (cur != NULL) { + cur->parent = ret; + switch (cur->type) { + case XML_RELAXNG_EMPTY: + case XML_RELAXNG_NOT_ALLOWED: + case XML_RELAXNG_TEXT: + case XML_RELAXNG_ELEMENT: + case XML_RELAXNG_DATATYPE: + case XML_RELAXNG_VALUE: + case XML_RELAXNG_LIST: + case XML_RELAXNG_REF: + case XML_RELAXNG_PARENTREF: + case XML_RELAXNG_EXTERNALREF: + case XML_RELAXNG_DEF: + case XML_RELAXNG_ZEROORMORE: + case XML_RELAXNG_ONEORMORE: + case XML_RELAXNG_OPTIONAL: + case XML_RELAXNG_CHOICE: + case XML_RELAXNG_GROUP: + case XML_RELAXNG_INTERLEAVE: + if (last == NULL) { + ret->content = last = cur; + } else { + if ((last->type == XML_RELAXNG_ELEMENT) && + (ret->content == last)) { + ret->content = xmlRelaxNGNewDefine(ctxt, node); + if (ret->content != NULL) { + ret->content->type = XML_RELAXNG_GROUP; + ret->content->content = last; + } else { + ret->content = last; + } + } + last->next = cur; + last = cur; + } + break; + case XML_RELAXNG_ATTRIBUTE: + cur->next = ret->attrs; + ret->attrs = cur; + break; + case XML_RELAXNG_START: + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_CONTENT, + "RNG Internal error, start found in element\n", + NULL, NULL); + break; + case XML_RELAXNG_PARAM: + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_CONTENT, + "RNG Internal error, param found in element\n", + NULL, NULL); + break; + case XML_RELAXNG_EXCEPT: + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_CONTENT, + "RNG Internal error, except found in element\n", + NULL, NULL); + break; + case XML_RELAXNG_NOOP: + xmlRngPErr(ctxt, node, XML_RNGP_ELEMENT_CONTENT, + "RNG Internal error, noop found in element\n", + NULL, NULL); + break; + } + } + child = child->next; + } + ctxt->define = olddefine; + return (ret); +} + +/** + * xmlRelaxNGParsePatterns: + * @ctxt: a Relax-NG parser context + * @nodes: list of nodes + * @group: use an implicit <group> for elements + * + * parse the content of a RelaxNG start node. + * + * Returns the definition pointer or NULL in case of error. + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGParsePatterns(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr nodes, + int group) +{ + xmlRelaxNGDefinePtr def = NULL, last = NULL, cur, parent; + + parent = ctxt->def; + while (nodes != NULL) { + if (IS_RELAXNG(nodes, "element")) { + cur = xmlRelaxNGParseElement(ctxt, nodes); + if (cur == NULL) + return (NULL); + if (def == NULL) { + def = last = cur; + } else { + if ((group == 1) && (def->type == XML_RELAXNG_ELEMENT) && + (def == last)) { + def = xmlRelaxNGNewDefine(ctxt, nodes); + if (def == NULL) + return (NULL); + def->type = XML_RELAXNG_GROUP; + def->content = last; + } + last->next = cur; + last = cur; + } + cur->parent = parent; + } else { + cur = xmlRelaxNGParsePattern(ctxt, nodes); + if (cur != NULL) { + if (def == NULL) { + def = last = cur; + } else { + last->next = cur; + last = cur; + } + } + } + nodes = nodes->next; + } + return (def); +} + +/** + * xmlRelaxNGParseStart: + * @ctxt: a Relax-NG parser context + * @nodes: start children nodes + * + * parse the content of a RelaxNG start node. + * + * Returns 0 in case of success, -1 in case of error + */ +static int +xmlRelaxNGParseStart(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr nodes) +{ + int ret = 0; + xmlRelaxNGDefinePtr def = NULL, last; + + if (nodes == NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_START_EMPTY, "start has no children\n", + NULL, NULL); + return (-1); + } + if (IS_RELAXNG(nodes, "empty")) { + def = xmlRelaxNGNewDefine(ctxt, nodes); + if (def == NULL) + return (-1); + def->type = XML_RELAXNG_EMPTY; + if (nodes->children != NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_EMPTY_CONTENT, + "element empty is not empty\n", NULL, NULL); + } + } else if (IS_RELAXNG(nodes, "notAllowed")) { + def = xmlRelaxNGNewDefine(ctxt, nodes); + if (def == NULL) + return (-1); + def->type = XML_RELAXNG_NOT_ALLOWED; + if (nodes->children != NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_NOTALLOWED_NOT_EMPTY, + "element notAllowed is not empty\n", NULL, NULL); + } + } else { + def = xmlRelaxNGParsePatterns(ctxt, nodes, 1); + } + if (ctxt->grammar->start != NULL) { + last = ctxt->grammar->start; + while (last->next != NULL) + last = last->next; + last->next = def; + } else { + ctxt->grammar->start = def; + } + nodes = nodes->next; + if (nodes != NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_START_CONTENT, + "start more than one children\n", NULL, NULL); + return (-1); + } + return (ret); +} + +/** + * xmlRelaxNGParseGrammarContent: + * @ctxt: a Relax-NG parser context + * @nodes: grammar children nodes + * + * parse the content of a RelaxNG grammar node. + * + * Returns 0 in case of success, -1 in case of error + */ +static int +xmlRelaxNGParseGrammarContent(xmlRelaxNGParserCtxtPtr ctxt, + xmlNodePtr nodes) +{ + int ret = 0, tmp; + + if (nodes == NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_GRAMMAR_EMPTY, + "grammar has no children\n", NULL, NULL); + return (-1); + } + while (nodes != NULL) { + if (IS_RELAXNG(nodes, "start")) { + if (nodes->children == NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_START_EMPTY, + "start has no children\n", NULL, NULL); + } else { + tmp = xmlRelaxNGParseStart(ctxt, nodes->children); + if (tmp != 0) + ret = -1; + } + } else if (IS_RELAXNG(nodes, "define")) { + tmp = xmlRelaxNGParseDefine(ctxt, nodes); + if (tmp != 0) + ret = -1; + } else if (IS_RELAXNG(nodes, "include")) { + tmp = xmlRelaxNGParseInclude(ctxt, nodes); + if (tmp != 0) + ret = -1; + } else { + xmlRngPErr(ctxt, nodes, XML_RNGP_GRAMMAR_CONTENT, + "grammar has unexpected child %s\n", nodes->name, + NULL); + ret = -1; + } + nodes = nodes->next; + } + return (ret); +} + +/** + * xmlRelaxNGCheckReference: + * @ref: the ref + * @ctxt: a Relax-NG parser context + * @name: the name associated to the defines + * + * Applies the 4.17. combine attribute rule for all the define + * element of a given grammar using the same name. + */ +static void +xmlRelaxNGCheckReference(void *payload, void *data, const xmlChar * name) +{ + xmlRelaxNGDefinePtr ref = (xmlRelaxNGDefinePtr) payload; + xmlRelaxNGParserCtxtPtr ctxt = (xmlRelaxNGParserCtxtPtr) data; + xmlRelaxNGGrammarPtr grammar; + xmlRelaxNGDefinePtr def, cur; + + /* + * Those rules don't apply to imported ref from xmlRelaxNGParseImportRef + */ + if (ref->dflags & IS_EXTERNAL_REF) + return; + + grammar = ctxt->grammar; + if (grammar == NULL) { + xmlRngPErr(ctxt, ref->node, XML_ERR_INTERNAL_ERROR, + "Internal error: no grammar in CheckReference %s\n", + name, NULL); + return; + } + if (ref->content != NULL) { + xmlRngPErr(ctxt, ref->node, XML_ERR_INTERNAL_ERROR, + "Internal error: reference has content in CheckReference %s\n", + name, NULL); + return; + } + if (grammar->defs != NULL) { + def = xmlHashLookup(grammar->defs, name); + if (def != NULL) { + cur = ref; + while (cur != NULL) { + cur->content = def; + cur = cur->nextHash; + } + } else { + xmlRngPErr(ctxt, ref->node, XML_RNGP_REF_NO_DEF, + "Reference %s has no matching definition\n", name, + NULL); + } + } else { + xmlRngPErr(ctxt, ref->node, XML_RNGP_REF_NO_DEF, + "Reference %s has no matching definition\n", name, + NULL); + } +} + +/** + * xmlRelaxNGCheckCombine: + * @define: the define(s) list + * @ctxt: a Relax-NG parser context + * @name: the name associated to the defines + * + * Applies the 4.17. combine attribute rule for all the define + * element of a given grammar using the same name. + */ +static void +xmlRelaxNGCheckCombine(void *payload, void *data, const xmlChar * name) +{ + xmlRelaxNGDefinePtr define = (xmlRelaxNGDefinePtr) payload; + xmlRelaxNGParserCtxtPtr ctxt = (xmlRelaxNGParserCtxtPtr) data; + xmlChar *combine; + int choiceOrInterleave = -1; + int missing = 0; + xmlRelaxNGDefinePtr cur, last, tmp, tmp2; + + if (define->nextHash == NULL) + return; + cur = define; + while (cur != NULL) { + combine = xmlGetProp(cur->node, BAD_CAST "combine"); + if (combine != NULL) { + if (xmlStrEqual(combine, BAD_CAST "choice")) { + if (choiceOrInterleave == -1) + choiceOrInterleave = 1; + else if (choiceOrInterleave == 0) { + xmlRngPErr(ctxt, define->node, XML_RNGP_DEF_CHOICE_AND_INTERLEAVE, + "Defines for %s use both 'choice' and 'interleave'\n", + name, NULL); + } + } else if (xmlStrEqual(combine, BAD_CAST "interleave")) { + if (choiceOrInterleave == -1) + choiceOrInterleave = 0; + else if (choiceOrInterleave == 1) { + xmlRngPErr(ctxt, define->node, XML_RNGP_DEF_CHOICE_AND_INTERLEAVE, + "Defines for %s use both 'choice' and 'interleave'\n", + name, NULL); + } + } else { + xmlRngPErr(ctxt, define->node, XML_RNGP_UNKNOWN_COMBINE, + "Defines for %s use unknown combine value '%s''\n", + name, combine); + } + xmlFree(combine); + } else { + if (missing == 0) + missing = 1; + else { + xmlRngPErr(ctxt, define->node, XML_RNGP_NEED_COMBINE, + "Some defines for %s needs the combine attribute\n", + name, NULL); + } + } + + cur = cur->nextHash; + } +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGCheckCombine(): merging %s defines: %d\n", + name, choiceOrInterleave); +#endif + if (choiceOrInterleave == -1) + choiceOrInterleave = 0; + cur = xmlRelaxNGNewDefine(ctxt, define->node); + if (cur == NULL) + return; + if (choiceOrInterleave == 0) + cur->type = XML_RELAXNG_INTERLEAVE; + else + cur->type = XML_RELAXNG_CHOICE; + tmp = define; + last = NULL; + while (tmp != NULL) { + if (tmp->content != NULL) { + if (tmp->content->next != NULL) { + /* + * we need first to create a wrapper. + */ + tmp2 = xmlRelaxNGNewDefine(ctxt, tmp->content->node); + if (tmp2 == NULL) + break; + tmp2->type = XML_RELAXNG_GROUP; + tmp2->content = tmp->content; + } else { + tmp2 = tmp->content; + } + if (last == NULL) { + cur->content = tmp2; + } else { + last->next = tmp2; + } + last = tmp2; + } + tmp->content = cur; + tmp = tmp->nextHash; + } + define->content = cur; + if (choiceOrInterleave == 0) { + if (ctxt->interleaves == NULL) + ctxt->interleaves = xmlHashCreate(10); + if (ctxt->interleaves == NULL) { + xmlRngPErr(ctxt, define->node, XML_RNGP_INTERLEAVE_CREATE_FAILED, + "Failed to create interleaves hash table\n", NULL, + NULL); + } else { + char tmpname[32]; + + snprintf(tmpname, 32, "interleave%d", ctxt->nbInterleaves++); + if (xmlHashAddEntry(ctxt->interleaves, BAD_CAST tmpname, cur) < + 0) { + xmlRngPErr(ctxt, define->node, XML_RNGP_INTERLEAVE_CREATE_FAILED, + "Failed to add %s to hash table\n", + (const xmlChar *) tmpname, NULL); + } + } + } +} + +/** + * xmlRelaxNGCombineStart: + * @ctxt: a Relax-NG parser context + * @grammar: the grammar + * + * Applies the 4.17. combine rule for all the start + * element of a given grammar. + */ +static void +xmlRelaxNGCombineStart(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGGrammarPtr grammar) +{ + xmlRelaxNGDefinePtr starts; + xmlChar *combine; + int choiceOrInterleave = -1; + int missing = 0; + xmlRelaxNGDefinePtr cur; + + starts = grammar->start; + if ((starts == NULL) || (starts->next == NULL)) + return; + cur = starts; + while (cur != NULL) { + if ((cur->node == NULL) || (cur->node->parent == NULL) || + (!xmlStrEqual(cur->node->parent->name, BAD_CAST "start"))) { + combine = NULL; + xmlRngPErr(ctxt, cur->node, XML_RNGP_START_MISSING, + "Internal error: start element not found\n", NULL, + NULL); + } else { + combine = xmlGetProp(cur->node->parent, BAD_CAST "combine"); + } + + if (combine != NULL) { + if (xmlStrEqual(combine, BAD_CAST "choice")) { + if (choiceOrInterleave == -1) + choiceOrInterleave = 1; + else if (choiceOrInterleave == 0) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_START_CHOICE_AND_INTERLEAVE, + "<start> use both 'choice' and 'interleave'\n", + NULL, NULL); + } + } else if (xmlStrEqual(combine, BAD_CAST "interleave")) { + if (choiceOrInterleave == -1) + choiceOrInterleave = 0; + else if (choiceOrInterleave == 1) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_START_CHOICE_AND_INTERLEAVE, + "<start> use both 'choice' and 'interleave'\n", + NULL, NULL); + } + } else { + xmlRngPErr(ctxt, cur->node, XML_RNGP_UNKNOWN_COMBINE, + "<start> uses unknown combine value '%s''\n", + combine, NULL); + } + xmlFree(combine); + } else { + if (missing == 0) + missing = 1; + else { + xmlRngPErr(ctxt, cur->node, XML_RNGP_NEED_COMBINE, + "Some <start> element miss the combine attribute\n", + NULL, NULL); + } + } + + cur = cur->next; + } +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGCombineStart(): merging <start>: %d\n", + choiceOrInterleave); +#endif + if (choiceOrInterleave == -1) + choiceOrInterleave = 0; + cur = xmlRelaxNGNewDefine(ctxt, starts->node); + if (cur == NULL) + return; + if (choiceOrInterleave == 0) + cur->type = XML_RELAXNG_INTERLEAVE; + else + cur->type = XML_RELAXNG_CHOICE; + cur->content = grammar->start; + grammar->start = cur; + if (choiceOrInterleave == 0) { + if (ctxt->interleaves == NULL) + ctxt->interleaves = xmlHashCreate(10); + if (ctxt->interleaves == NULL) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_INTERLEAVE_CREATE_FAILED, + "Failed to create interleaves hash table\n", NULL, + NULL); + } else { + char tmpname[32]; + + snprintf(tmpname, 32, "interleave%d", ctxt->nbInterleaves++); + if (xmlHashAddEntry(ctxt->interleaves, BAD_CAST tmpname, cur) < + 0) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_INTERLEAVE_CREATE_FAILED, + "Failed to add %s to hash table\n", + (const xmlChar *) tmpname, NULL); + } + } + } +} + +/** + * xmlRelaxNGCheckCycles: + * @ctxt: a Relax-NG parser context + * @nodes: grammar children nodes + * @depth: the counter + * + * Check for cycles. + * + * Returns 0 if check passed, and -1 in case of error + */ +static int +xmlRelaxNGCheckCycles(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr cur, int depth) +{ + int ret = 0; + + while ((ret == 0) && (cur != NULL)) { + if ((cur->type == XML_RELAXNG_REF) || + (cur->type == XML_RELAXNG_PARENTREF)) { + if (cur->depth == -1) { + cur->depth = depth; + ret = xmlRelaxNGCheckCycles(ctxt, cur->content, depth); + cur->depth = -2; + } else if (depth == cur->depth) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_REF_CYCLE, + "Detected a cycle in %s references\n", + cur->name, NULL); + return (-1); + } + } else if (cur->type == XML_RELAXNG_ELEMENT) { + ret = xmlRelaxNGCheckCycles(ctxt, cur->content, depth + 1); + } else { + ret = xmlRelaxNGCheckCycles(ctxt, cur->content, depth); + } + cur = cur->next; + } + return (ret); +} + +/** + * xmlRelaxNGTryUnlink: + * @ctxt: a Relax-NG parser context + * @cur: the definition to unlink + * @parent: the parent definition + * @prev: the previous sibling definition + * + * Try to unlink a definition. If not possible make it a NOOP + * + * Returns the new prev definition + */ +static xmlRelaxNGDefinePtr +xmlRelaxNGTryUnlink(xmlRelaxNGParserCtxtPtr ctxt ATTRIBUTE_UNUSED, + xmlRelaxNGDefinePtr cur, + xmlRelaxNGDefinePtr parent, xmlRelaxNGDefinePtr prev) +{ + if (prev != NULL) { + prev->next = cur->next; + } else { + if (parent != NULL) { + if (parent->content == cur) + parent->content = cur->next; + else if (parent->attrs == cur) + parent->attrs = cur->next; + else if (parent->nameClass == cur) + parent->nameClass = cur->next; + } else { + cur->type = XML_RELAXNG_NOOP; + prev = cur; + } + } + return (prev); +} + +/** + * xmlRelaxNGSimplify: + * @ctxt: a Relax-NG parser context + * @nodes: grammar children nodes + * + * Check for simplification of empty and notAllowed + */ +static void +xmlRelaxNGSimplify(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr cur, xmlRelaxNGDefinePtr parent) +{ + xmlRelaxNGDefinePtr prev = NULL; + + while (cur != NULL) { + if ((cur->type == XML_RELAXNG_REF) || + (cur->type == XML_RELAXNG_PARENTREF)) { + if (cur->depth != -3) { + cur->depth = -3; + xmlRelaxNGSimplify(ctxt, cur->content, cur); + } + } else if (cur->type == XML_RELAXNG_NOT_ALLOWED) { + cur->parent = parent; + if ((parent != NULL) && + ((parent->type == XML_RELAXNG_ATTRIBUTE) || + (parent->type == XML_RELAXNG_LIST) || + (parent->type == XML_RELAXNG_GROUP) || + (parent->type == XML_RELAXNG_INTERLEAVE) || + (parent->type == XML_RELAXNG_ONEORMORE) || + (parent->type == XML_RELAXNG_ZEROORMORE))) { + parent->type = XML_RELAXNG_NOT_ALLOWED; + break; + } + if ((parent != NULL) && (parent->type == XML_RELAXNG_CHOICE)) { + prev = xmlRelaxNGTryUnlink(ctxt, cur, parent, prev); + } else + prev = cur; + } else if (cur->type == XML_RELAXNG_EMPTY) { + cur->parent = parent; + if ((parent != NULL) && + ((parent->type == XML_RELAXNG_ONEORMORE) || + (parent->type == XML_RELAXNG_ZEROORMORE))) { + parent->type = XML_RELAXNG_EMPTY; + break; + } + if ((parent != NULL) && + ((parent->type == XML_RELAXNG_GROUP) || + (parent->type == XML_RELAXNG_INTERLEAVE))) { + prev = xmlRelaxNGTryUnlink(ctxt, cur, parent, prev); + } else + prev = cur; + } else { + cur->parent = parent; + if (cur->content != NULL) + xmlRelaxNGSimplify(ctxt, cur->content, cur); + if ((cur->type != XML_RELAXNG_VALUE) && (cur->attrs != NULL)) + xmlRelaxNGSimplify(ctxt, cur->attrs, cur); + if (cur->nameClass != NULL) + xmlRelaxNGSimplify(ctxt, cur->nameClass, cur); + /* + * On Elements, try to move attribute only generating rules on + * the attrs rules. + */ + if (cur->type == XML_RELAXNG_ELEMENT) { + int attronly; + xmlRelaxNGDefinePtr tmp, pre; + + while (cur->content != NULL) { + attronly = + xmlRelaxNGGenerateAttributes(ctxt, cur->content); + if (attronly == 1) { + /* + * migrate cur->content to attrs + */ + tmp = cur->content; + cur->content = tmp->next; + tmp->next = cur->attrs; + cur->attrs = tmp; + } else { + /* + * cur->content can generate elements or text + */ + break; + } + } + pre = cur->content; + while ((pre != NULL) && (pre->next != NULL)) { + tmp = pre->next; + attronly = xmlRelaxNGGenerateAttributes(ctxt, tmp); + if (attronly == 1) { + /* + * migrate tmp to attrs + */ + pre->next = tmp->next; + tmp->next = cur->attrs; + cur->attrs = tmp; + } else { + pre = tmp; + } + } + } + /* + * This may result in a simplification + */ + if ((cur->type == XML_RELAXNG_GROUP) || + (cur->type == XML_RELAXNG_INTERLEAVE)) { + if (cur->content == NULL) + cur->type = XML_RELAXNG_EMPTY; + else if (cur->content->next == NULL) { + if ((parent == NULL) && (prev == NULL)) { + cur->type = XML_RELAXNG_NOOP; + } else if (prev == NULL) { + parent->content = cur->content; + cur->content->next = cur->next; + cur = cur->content; + } else { + cur->content->next = cur->next; + prev->next = cur->content; + cur = cur->content; + } + } + } + /* + * the current node may have been transformed back + */ + if ((cur->type == XML_RELAXNG_EXCEPT) && + (cur->content != NULL) && + (cur->content->type == XML_RELAXNG_NOT_ALLOWED)) { + prev = xmlRelaxNGTryUnlink(ctxt, cur, parent, prev); + } else if (cur->type == XML_RELAXNG_NOT_ALLOWED) { + if ((parent != NULL) && + ((parent->type == XML_RELAXNG_ATTRIBUTE) || + (parent->type == XML_RELAXNG_LIST) || + (parent->type == XML_RELAXNG_GROUP) || + (parent->type == XML_RELAXNG_INTERLEAVE) || + (parent->type == XML_RELAXNG_ONEORMORE) || + (parent->type == XML_RELAXNG_ZEROORMORE))) { + parent->type = XML_RELAXNG_NOT_ALLOWED; + break; + } + if ((parent != NULL) && + (parent->type == XML_RELAXNG_CHOICE)) { + prev = xmlRelaxNGTryUnlink(ctxt, cur, parent, prev); + } else + prev = cur; + } else if (cur->type == XML_RELAXNG_EMPTY) { + if ((parent != NULL) && + ((parent->type == XML_RELAXNG_ONEORMORE) || + (parent->type == XML_RELAXNG_ZEROORMORE))) { + parent->type = XML_RELAXNG_EMPTY; + break; + } + if ((parent != NULL) && + ((parent->type == XML_RELAXNG_GROUP) || + (parent->type == XML_RELAXNG_INTERLEAVE) || + (parent->type == XML_RELAXNG_CHOICE))) { + prev = xmlRelaxNGTryUnlink(ctxt, cur, parent, prev); + } else + prev = cur; + } else { + prev = cur; + } + } + cur = cur->next; + } +} + +/** + * xmlRelaxNGGroupContentType: + * @ct1: the first content type + * @ct2: the second content type + * + * Try to group 2 content types + * + * Returns the content type + */ +static xmlRelaxNGContentType +xmlRelaxNGGroupContentType(xmlRelaxNGContentType ct1, + xmlRelaxNGContentType ct2) +{ + if ((ct1 == XML_RELAXNG_CONTENT_ERROR) || + (ct2 == XML_RELAXNG_CONTENT_ERROR)) + return (XML_RELAXNG_CONTENT_ERROR); + if (ct1 == XML_RELAXNG_CONTENT_EMPTY) + return (ct2); + if (ct2 == XML_RELAXNG_CONTENT_EMPTY) + return (ct1); + if ((ct1 == XML_RELAXNG_CONTENT_COMPLEX) && + (ct2 == XML_RELAXNG_CONTENT_COMPLEX)) + return (XML_RELAXNG_CONTENT_COMPLEX); + return (XML_RELAXNG_CONTENT_ERROR); +} + +/** + * xmlRelaxNGMaxContentType: + * @ct1: the first content type + * @ct2: the second content type + * + * Compute the max content-type + * + * Returns the content type + */ +static xmlRelaxNGContentType +xmlRelaxNGMaxContentType(xmlRelaxNGContentType ct1, + xmlRelaxNGContentType ct2) +{ + if ((ct1 == XML_RELAXNG_CONTENT_ERROR) || + (ct2 == XML_RELAXNG_CONTENT_ERROR)) + return (XML_RELAXNG_CONTENT_ERROR); + if ((ct1 == XML_RELAXNG_CONTENT_SIMPLE) || + (ct2 == XML_RELAXNG_CONTENT_SIMPLE)) + return (XML_RELAXNG_CONTENT_SIMPLE); + if ((ct1 == XML_RELAXNG_CONTENT_COMPLEX) || + (ct2 == XML_RELAXNG_CONTENT_COMPLEX)) + return (XML_RELAXNG_CONTENT_COMPLEX); + return (XML_RELAXNG_CONTENT_EMPTY); +} + +/** + * xmlRelaxNGCheckRules: + * @ctxt: a Relax-NG parser context + * @cur: the current definition + * @flags: some accumulated flags + * @ptype: the parent type + * + * Check for rules in section 7.1 and 7.2 + * + * Returns the content type of @cur + */ +static xmlRelaxNGContentType +xmlRelaxNGCheckRules(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGDefinePtr cur, int flags, + xmlRelaxNGType ptype) +{ + int nflags; + xmlRelaxNGContentType ret, tmp, val = XML_RELAXNG_CONTENT_EMPTY; + + while (cur != NULL) { + ret = XML_RELAXNG_CONTENT_EMPTY; + if ((cur->type == XML_RELAXNG_REF) || + (cur->type == XML_RELAXNG_PARENTREF)) { + /* + * This should actually be caught by list//element(ref) at the + * element boundaries, c.f. Bug #159968 local refs are dropped + * in step 4.19. + */ +#if 0 + if (flags & XML_RELAXNG_IN_LIST) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_LIST_REF, + "Found forbidden pattern list//ref\n", NULL, + NULL); + } +#endif + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_REF, + "Found forbidden pattern data/except//ref\n", + NULL, NULL); + } + if (cur->content == NULL) { + if (cur->type == XML_RELAXNG_PARENTREF) + xmlRngPErr(ctxt, cur->node, XML_RNGP_REF_NO_DEF, + "Internal found no define for parent refs\n", + NULL, NULL); + else + xmlRngPErr(ctxt, cur->node, XML_RNGP_REF_NO_DEF, + "Internal found no define for ref %s\n", + (cur->name ? cur->name: BAD_CAST "null"), NULL); + } + if (cur->depth > -4) { + cur->depth = -4; + ret = xmlRelaxNGCheckRules(ctxt, cur->content, + flags, cur->type); + cur->depth = ret - 15; + } else if (cur->depth == -4) { + ret = XML_RELAXNG_CONTENT_COMPLEX; + } else { + ret = (xmlRelaxNGContentType) (cur->depth + 15); + } + } else if (cur->type == XML_RELAXNG_ELEMENT) { + /* + * The 7.3 Attribute derivation rule for groups is plugged there + */ + xmlRelaxNGCheckGroupAttrs(ctxt, cur); + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_ELEM, + "Found forbidden pattern data/except//element(ref)\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_LIST) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_LIST_ELEM, + "Found forbidden pattern list//element(ref)\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_ATTRIBUTE) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_ATTR_ELEM, + "Found forbidden pattern attribute//element(ref)\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_ATTRIBUTE) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_ATTR_ELEM, + "Found forbidden pattern attribute//element(ref)\n", + NULL, NULL); + } + /* + * reset since in the simple form elements are only child + * of grammar/define + */ + nflags = 0; + ret = + xmlRelaxNGCheckRules(ctxt, cur->attrs, nflags, cur->type); + if (ret != XML_RELAXNG_CONTENT_EMPTY) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_ELEM_CONTENT_EMPTY, + "Element %s attributes have a content type error\n", + cur->name, NULL); + } + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, nflags, + cur->type); + if (ret == XML_RELAXNG_CONTENT_ERROR) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_ELEM_CONTENT_ERROR, + "Element %s has a content type error\n", + cur->name, NULL); + } else { + ret = XML_RELAXNG_CONTENT_COMPLEX; + } + } else if (cur->type == XML_RELAXNG_ATTRIBUTE) { + if (flags & XML_RELAXNG_IN_ATTRIBUTE) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_ATTR_ATTR, + "Found forbidden pattern attribute//attribute\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_LIST) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_LIST_ATTR, + "Found forbidden pattern list//attribute\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_OOMGROUP) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_ONEMORE_GROUP_ATTR, + "Found forbidden pattern oneOrMore//group//attribute\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_OOMINTERLEAVE) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_ONEMORE_INTERLEAVE_ATTR, + "Found forbidden pattern oneOrMore//interleave//attribute\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_ATTR, + "Found forbidden pattern data/except//attribute\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_ATTR, + "Found forbidden pattern start//attribute\n", + NULL, NULL); + } + if ((!(flags & XML_RELAXNG_IN_ONEORMORE)) + && cur->name == NULL + /* following is checking alternative name class readiness + in case it went the "choice" route */ + && cur->nameClass == NULL) { + if (cur->ns == NULL) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_ANYNAME_ATTR_ANCESTOR, + "Found anyName attribute without oneOrMore ancestor\n", + NULL, NULL); + } else { + xmlRngPErr(ctxt, cur->node, XML_RNGP_NSNAME_ATTR_ANCESTOR, + "Found nsName attribute without oneOrMore ancestor\n", + NULL, NULL); + } + } + nflags = flags | XML_RELAXNG_IN_ATTRIBUTE; + xmlRelaxNGCheckRules(ctxt, cur->content, nflags, cur->type); + ret = XML_RELAXNG_CONTENT_EMPTY; + } else if ((cur->type == XML_RELAXNG_ONEORMORE) || + (cur->type == XML_RELAXNG_ZEROORMORE)) { + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_ONEMORE, + "Found forbidden pattern data/except//oneOrMore\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_ONEMORE, + "Found forbidden pattern start//oneOrMore\n", + NULL, NULL); + } + nflags = flags | XML_RELAXNG_IN_ONEORMORE; + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, nflags, + cur->type); + ret = xmlRelaxNGGroupContentType(ret, ret); + } else if (cur->type == XML_RELAXNG_LIST) { + if (flags & XML_RELAXNG_IN_LIST) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_LIST_LIST, + "Found forbidden pattern list//list\n", NULL, + NULL); + } + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_LIST, + "Found forbidden pattern data/except//list\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_LIST, + "Found forbidden pattern start//list\n", NULL, + NULL); + } + nflags = flags | XML_RELAXNG_IN_LIST; + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, nflags, + cur->type); + } else if (cur->type == XML_RELAXNG_GROUP) { + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_GROUP, + "Found forbidden pattern data/except//group\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_GROUP, + "Found forbidden pattern start//group\n", NULL, + NULL); + } + if (flags & XML_RELAXNG_IN_ONEORMORE) + nflags = flags | XML_RELAXNG_IN_OOMGROUP; + else + nflags = flags; + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, nflags, + cur->type); + /* + * The 7.3 Attribute derivation rule for groups is plugged there + */ + xmlRelaxNGCheckGroupAttrs(ctxt, cur); + } else if (cur->type == XML_RELAXNG_INTERLEAVE) { + if (flags & XML_RELAXNG_IN_LIST) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_LIST_INTERLEAVE, + "Found forbidden pattern list//interleave\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_INTERLEAVE, + "Found forbidden pattern data/except//interleave\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_INTERLEAVE, + "Found forbidden pattern start//interleave\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_ONEORMORE) + nflags = flags | XML_RELAXNG_IN_OOMINTERLEAVE; + else + nflags = flags; + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, nflags, + cur->type); + } else if (cur->type == XML_RELAXNG_EXCEPT) { + if ((cur->parent != NULL) && + (cur->parent->type == XML_RELAXNG_DATATYPE)) + nflags = flags | XML_RELAXNG_IN_DATAEXCEPT; + else + nflags = flags; + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, nflags, + cur->type); + } else if (cur->type == XML_RELAXNG_DATATYPE) { + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_DATA, + "Found forbidden pattern start//data\n", NULL, + NULL); + } + xmlRelaxNGCheckRules(ctxt, cur->content, flags, cur->type); + ret = XML_RELAXNG_CONTENT_SIMPLE; + } else if (cur->type == XML_RELAXNG_VALUE) { + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_VALUE, + "Found forbidden pattern start//value\n", NULL, + NULL); + } + xmlRelaxNGCheckRules(ctxt, cur->content, flags, cur->type); + ret = XML_RELAXNG_CONTENT_SIMPLE; + } else if (cur->type == XML_RELAXNG_TEXT) { + if (flags & XML_RELAXNG_IN_LIST) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_LIST_TEXT, + "Found forbidden pattern list//text\n", NULL, + NULL); + } + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_TEXT, + "Found forbidden pattern data/except//text\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_TEXT, + "Found forbidden pattern start//text\n", NULL, + NULL); + } + ret = XML_RELAXNG_CONTENT_COMPLEX; + } else if (cur->type == XML_RELAXNG_EMPTY) { + if (flags & XML_RELAXNG_IN_DATAEXCEPT) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_DATA_EXCEPT_EMPTY, + "Found forbidden pattern data/except//empty\n", + NULL, NULL); + } + if (flags & XML_RELAXNG_IN_START) { + xmlRngPErr(ctxt, cur->node, XML_RNGP_PAT_START_EMPTY, + "Found forbidden pattern start//empty\n", NULL, + NULL); + } + ret = XML_RELAXNG_CONTENT_EMPTY; + } else if (cur->type == XML_RELAXNG_CHOICE) { + xmlRelaxNGCheckChoiceDeterminism(ctxt, cur); + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, flags, cur->type); + } else { + ret = + xmlRelaxNGCheckRules(ctxt, cur->content, flags, cur->type); + } + cur = cur->next; + if (ptype == XML_RELAXNG_GROUP) { + val = xmlRelaxNGGroupContentType(val, ret); + } else if (ptype == XML_RELAXNG_INTERLEAVE) { + /* + * TODO: scan complain that tmp is never used, seems on purpose + * need double-checking + */ + tmp = xmlRelaxNGGroupContentType(val, ret); + if (tmp != XML_RELAXNG_CONTENT_ERROR) + tmp = xmlRelaxNGMaxContentType(val, ret); + } else if (ptype == XML_RELAXNG_CHOICE) { + val = xmlRelaxNGMaxContentType(val, ret); + } else if (ptype == XML_RELAXNG_LIST) { + val = XML_RELAXNG_CONTENT_SIMPLE; + } else if (ptype == XML_RELAXNG_EXCEPT) { + if (ret == XML_RELAXNG_CONTENT_ERROR) + val = XML_RELAXNG_CONTENT_ERROR; + else + val = XML_RELAXNG_CONTENT_SIMPLE; + } else { + val = xmlRelaxNGGroupContentType(val, ret); + } + + } + return (val); +} + +/** + * xmlRelaxNGParseGrammar: + * @ctxt: a Relax-NG parser context + * @nodes: grammar children nodes + * + * parse a Relax-NG <grammar> node + * + * Returns the internal xmlRelaxNGGrammarPtr built or + * NULL in case of error + */ +static xmlRelaxNGGrammarPtr +xmlRelaxNGParseGrammar(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr nodes) +{ + xmlRelaxNGGrammarPtr ret, tmp, old; + +#ifdef DEBUG_GRAMMAR + xmlGenericError(xmlGenericErrorContext, "Parsing a new grammar\n"); +#endif + + ret = xmlRelaxNGNewGrammar(ctxt); + if (ret == NULL) + return (NULL); + + /* + * Link the new grammar in the tree + */ + ret->parent = ctxt->grammar; + if (ctxt->grammar != NULL) { + tmp = ctxt->grammar->children; + if (tmp == NULL) { + ctxt->grammar->children = ret; + } else { + while (tmp->next != NULL) + tmp = tmp->next; + tmp->next = ret; + } + } + + old = ctxt->grammar; + ctxt->grammar = ret; + xmlRelaxNGParseGrammarContent(ctxt, nodes); + ctxt->grammar = ret; + if (ctxt->grammar == NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_GRAMMAR_CONTENT, + "Failed to parse <grammar> content\n", NULL, NULL); + } else if (ctxt->grammar->start == NULL) { + xmlRngPErr(ctxt, nodes, XML_RNGP_GRAMMAR_NO_START, + "Element <grammar> has no <start>\n", NULL, NULL); + } + + /* + * Apply 4.17 merging rules to defines and starts + */ + xmlRelaxNGCombineStart(ctxt, ret); + if (ret->defs != NULL) { + xmlHashScan(ret->defs, xmlRelaxNGCheckCombine, ctxt); + } + + /* + * link together defines and refs in this grammar + */ + if (ret->refs != NULL) { + xmlHashScan(ret->refs, xmlRelaxNGCheckReference, ctxt); + } + + + /* @@@@ */ + + ctxt->grammar = old; + return (ret); +} + +/** + * xmlRelaxNGParseDocument: + * @ctxt: a Relax-NG parser context + * @node: the root node of the RelaxNG schema + * + * parse a Relax-NG definition resource and build an internal + * xmlRelaxNG structure which can be used to validate instances. + * + * Returns the internal XML RelaxNG structure built or + * NULL in case of error + */ +static xmlRelaxNGPtr +xmlRelaxNGParseDocument(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlRelaxNGPtr schema = NULL; + const xmlChar *olddefine; + xmlRelaxNGGrammarPtr old; + + if ((ctxt == NULL) || (node == NULL)) + return (NULL); + + schema = xmlRelaxNGNewRelaxNG(ctxt); + if (schema == NULL) + return (NULL); + + olddefine = ctxt->define; + ctxt->define = NULL; + if (IS_RELAXNG(node, "grammar")) { + schema->topgrammar = xmlRelaxNGParseGrammar(ctxt, node->children); + if (schema->topgrammar == NULL) { + xmlRelaxNGFree(schema); + return (NULL); + } + } else { + xmlRelaxNGGrammarPtr tmp, ret; + + schema->topgrammar = ret = xmlRelaxNGNewGrammar(ctxt); + if (schema->topgrammar == NULL) { + xmlRelaxNGFree(schema); + return (NULL); + } + /* + * Link the new grammar in the tree + */ + ret->parent = ctxt->grammar; + if (ctxt->grammar != NULL) { + tmp = ctxt->grammar->children; + if (tmp == NULL) { + ctxt->grammar->children = ret; + } else { + while (tmp->next != NULL) + tmp = tmp->next; + tmp->next = ret; + } + } + old = ctxt->grammar; + ctxt->grammar = ret; + xmlRelaxNGParseStart(ctxt, node); + if (old != NULL) + ctxt->grammar = old; + } + ctxt->define = olddefine; + if (schema->topgrammar->start != NULL) { + xmlRelaxNGCheckCycles(ctxt, schema->topgrammar->start, 0); + if ((ctxt->flags & XML_RELAXNG_IN_EXTERNALREF) == 0) { + xmlRelaxNGSimplify(ctxt, schema->topgrammar->start, NULL); + while ((schema->topgrammar->start != NULL) && + (schema->topgrammar->start->type == XML_RELAXNG_NOOP) && + (schema->topgrammar->start->next != NULL)) + schema->topgrammar->start = + schema->topgrammar->start->content; + xmlRelaxNGCheckRules(ctxt, schema->topgrammar->start, + XML_RELAXNG_IN_START, XML_RELAXNG_NOOP); + } + } +#ifdef DEBUG + if (schema == NULL) + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGParseDocument() failed\n"); +#endif + + return (schema); +} + +/************************************************************************ + * * + * Reading RelaxNGs * + * * + ************************************************************************/ + +/** + * xmlRelaxNGNewParserCtxt: + * @URL: the location of the schema + * + * Create an XML RelaxNGs parse context for that file/resource expected + * to contain an XML RelaxNGs file. + * + * Returns the parser context or NULL in case of error + */ +xmlRelaxNGParserCtxtPtr +xmlRelaxNGNewParserCtxt(const char *URL) +{ + xmlRelaxNGParserCtxtPtr ret; + + if (URL == NULL) + return (NULL); + + ret = + (xmlRelaxNGParserCtxtPtr) xmlMalloc(sizeof(xmlRelaxNGParserCtxt)); + if (ret == NULL) { + xmlRngPErrMemory(NULL, "building parser\n"); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGParserCtxt)); + ret->URL = xmlStrdup((const xmlChar *) URL); + ret->error = xmlGenericError; + ret->userData = xmlGenericErrorContext; + return (ret); +} + +/** + * xmlRelaxNGNewMemParserCtxt: + * @buffer: a pointer to a char array containing the schemas + * @size: the size of the array + * + * Create an XML RelaxNGs parse context for that memory buffer expected + * to contain an XML RelaxNGs file. + * + * Returns the parser context or NULL in case of error + */ +xmlRelaxNGParserCtxtPtr +xmlRelaxNGNewMemParserCtxt(const char *buffer, int size) +{ + xmlRelaxNGParserCtxtPtr ret; + + if ((buffer == NULL) || (size <= 0)) + return (NULL); + + ret = + (xmlRelaxNGParserCtxtPtr) xmlMalloc(sizeof(xmlRelaxNGParserCtxt)); + if (ret == NULL) { + xmlRngPErrMemory(NULL, "building parser\n"); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGParserCtxt)); + ret->buffer = buffer; + ret->size = size; + ret->error = xmlGenericError; + ret->userData = xmlGenericErrorContext; + return (ret); +} + +/** + * xmlRelaxNGNewDocParserCtxt: + * @doc: a preparsed document tree + * + * Create an XML RelaxNGs parser context for that document. + * Note: since the process of compiling a RelaxNG schemas modifies the + * document, the @doc parameter is duplicated internally. + * + * Returns the parser context or NULL in case of error + */ +xmlRelaxNGParserCtxtPtr +xmlRelaxNGNewDocParserCtxt(xmlDocPtr doc) +{ + xmlRelaxNGParserCtxtPtr ret; + xmlDocPtr copy; + + if (doc == NULL) + return (NULL); + copy = xmlCopyDoc(doc, 1); + if (copy == NULL) + return (NULL); + + ret = + (xmlRelaxNGParserCtxtPtr) xmlMalloc(sizeof(xmlRelaxNGParserCtxt)); + if (ret == NULL) { + xmlRngPErrMemory(NULL, "building parser\n"); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGParserCtxt)); + ret->document = copy; + ret->freedoc = 1; + ret->userData = xmlGenericErrorContext; + return (ret); +} + +/** + * xmlRelaxNGFreeParserCtxt: + * @ctxt: the schema parser context + * + * Free the resources associated to the schema parser context + */ +void +xmlRelaxNGFreeParserCtxt(xmlRelaxNGParserCtxtPtr ctxt) +{ + if (ctxt == NULL) + return; + if (ctxt->URL != NULL) + xmlFree(ctxt->URL); + if (ctxt->doc != NULL) + xmlRelaxNGFreeDocument(ctxt->doc); + if (ctxt->interleaves != NULL) + xmlHashFree(ctxt->interleaves, NULL); + if (ctxt->documents != NULL) + xmlRelaxNGFreeDocumentList(ctxt->documents); + if (ctxt->includes != NULL) + xmlRelaxNGFreeIncludeList(ctxt->includes); + if (ctxt->docTab != NULL) + xmlFree(ctxt->docTab); + if (ctxt->incTab != NULL) + xmlFree(ctxt->incTab); + if (ctxt->defTab != NULL) { + int i; + + for (i = 0; i < ctxt->defNr; i++) + xmlRelaxNGFreeDefine(ctxt->defTab[i]); + xmlFree(ctxt->defTab); + } + if ((ctxt->document != NULL) && (ctxt->freedoc)) + xmlFreeDoc(ctxt->document); + xmlFree(ctxt); +} + +/** + * xmlRelaxNGNormExtSpace: + * @value: a value + * + * Removes the leading and ending spaces of the value + * The string is modified "in situ" + */ +static void +xmlRelaxNGNormExtSpace(xmlChar * value) +{ + xmlChar *start = value; + xmlChar *cur = value; + + if (value == NULL) + return; + + while (IS_BLANK_CH(*cur)) + cur++; + if (cur == start) { + do { + while ((*cur != 0) && (!IS_BLANK_CH(*cur))) + cur++; + if (*cur == 0) + return; + start = cur; + while (IS_BLANK_CH(*cur)) + cur++; + if (*cur == 0) { + *start = 0; + return; + } + } while (1); + } else { + do { + while ((*cur != 0) && (!IS_BLANK_CH(*cur))) + *start++ = *cur++; + if (*cur == 0) { + *start = 0; + return; + } + /* don't try to normalize the inner spaces */ + while (IS_BLANK_CH(*cur)) + cur++; + if (*cur == 0) { + *start = 0; + return; + } + *start++ = *cur++; + } while (1); + } +} + +/** + * xmlRelaxNGCleanupAttributes: + * @ctxt: a Relax-NG parser context + * @node: a Relax-NG node + * + * Check all the attributes on the given node + */ +static void +xmlRelaxNGCleanupAttributes(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node) +{ + xmlAttrPtr cur, next; + + cur = node->properties; + while (cur != NULL) { + next = cur->next; + if ((cur->ns == NULL) || + (xmlStrEqual(cur->ns->href, xmlRelaxNGNs))) { + if (xmlStrEqual(cur->name, BAD_CAST "name")) { + if ((!xmlStrEqual(node->name, BAD_CAST "element")) && + (!xmlStrEqual(node->name, BAD_CAST "attribute")) && + (!xmlStrEqual(node->name, BAD_CAST "ref")) && + (!xmlStrEqual(node->name, BAD_CAST "parentRef")) && + (!xmlStrEqual(node->name, BAD_CAST "param")) && + (!xmlStrEqual(node->name, BAD_CAST "define"))) { + xmlRngPErr(ctxt, node, XML_RNGP_FORBIDDEN_ATTRIBUTE, + "Attribute %s is not allowed on %s\n", + cur->name, node->name); + } + } else if (xmlStrEqual(cur->name, BAD_CAST "type")) { + if ((!xmlStrEqual(node->name, BAD_CAST "value")) && + (!xmlStrEqual(node->name, BAD_CAST "data"))) { + xmlRngPErr(ctxt, node, XML_RNGP_FORBIDDEN_ATTRIBUTE, + "Attribute %s is not allowed on %s\n", + cur->name, node->name); + } + } else if (xmlStrEqual(cur->name, BAD_CAST "href")) { + if ((!xmlStrEqual(node->name, BAD_CAST "externalRef")) && + (!xmlStrEqual(node->name, BAD_CAST "include"))) { + xmlRngPErr(ctxt, node, XML_RNGP_FORBIDDEN_ATTRIBUTE, + "Attribute %s is not allowed on %s\n", + cur->name, node->name); + } + } else if (xmlStrEqual(cur->name, BAD_CAST "combine")) { + if ((!xmlStrEqual(node->name, BAD_CAST "start")) && + (!xmlStrEqual(node->name, BAD_CAST "define"))) { + xmlRngPErr(ctxt, node, XML_RNGP_FORBIDDEN_ATTRIBUTE, + "Attribute %s is not allowed on %s\n", + cur->name, node->name); + } + } else if (xmlStrEqual(cur->name, BAD_CAST "datatypeLibrary")) { + xmlChar *val; + xmlURIPtr uri; + + val = xmlNodeListGetString(node->doc, cur->children, 1); + if (val != NULL) { + if (val[0] != 0) { + uri = xmlParseURI((const char *) val); + if (uri == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_INVALID_URI, + "Attribute %s contains invalid URI %s\n", + cur->name, val); + } else { + if (uri->scheme == NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_URI_NOT_ABSOLUTE, + "Attribute %s URI %s is not absolute\n", + cur->name, val); + } + if (uri->fragment != NULL) { + xmlRngPErr(ctxt, node, XML_RNGP_URI_FRAGMENT, + "Attribute %s URI %s has a fragment ID\n", + cur->name, val); + } + xmlFreeURI(uri); + } + } + xmlFree(val); + } + } else if (!xmlStrEqual(cur->name, BAD_CAST "ns")) { + xmlRngPErr(ctxt, node, XML_RNGP_UNKNOWN_ATTRIBUTE, + "Unknown attribute %s on %s\n", cur->name, + node->name); + } + } + cur = next; + } +} + +/** + * xmlRelaxNGCleanupTree: + * @ctxt: a Relax-NG parser context + * @root: an xmlNodePtr subtree + * + * Cleanup the subtree from unwanted nodes for parsing, resolve + * Include and externalRef lookups. + */ +static void +xmlRelaxNGCleanupTree(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr root) +{ + xmlNodePtr cur, delete; + + delete = NULL; + cur = root; + while (cur != NULL) { + if (delete != NULL) { + xmlUnlinkNode(delete); + xmlFreeNode(delete); + delete = NULL; + } + if (cur->type == XML_ELEMENT_NODE) { + /* + * Simplification 4.1. Annotations + */ + if ((cur->ns == NULL) || + (!xmlStrEqual(cur->ns->href, xmlRelaxNGNs))) { + if ((cur->parent != NULL) && + (cur->parent->type == XML_ELEMENT_NODE) && + ((xmlStrEqual(cur->parent->name, BAD_CAST "name")) || + (xmlStrEqual(cur->parent->name, BAD_CAST "value")) || + (xmlStrEqual(cur->parent->name, BAD_CAST "param")))) { + xmlRngPErr(ctxt, cur, XML_RNGP_FOREIGN_ELEMENT, + "element %s doesn't allow foreign elements\n", + cur->parent->name, NULL); + } + delete = cur; + goto skip_children; + } else { + xmlRelaxNGCleanupAttributes(ctxt, cur); + if (xmlStrEqual(cur->name, BAD_CAST "externalRef")) { + xmlChar *href, *ns, *base, *URL; + xmlRelaxNGDocumentPtr docu; + xmlNodePtr tmp; + xmlURIPtr uri; + + ns = xmlGetProp(cur, BAD_CAST "ns"); + if (ns == NULL) { + tmp = cur->parent; + while ((tmp != NULL) && + (tmp->type == XML_ELEMENT_NODE)) { + ns = xmlGetProp(tmp, BAD_CAST "ns"); + if (ns != NULL) + break; + tmp = tmp->parent; + } + } + href = xmlGetProp(cur, BAD_CAST "href"); + if (href == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_MISSING_HREF, + "xmlRelaxNGParse: externalRef has no href attribute\n", + NULL, NULL); + if (ns != NULL) + xmlFree(ns); + delete = cur; + goto skip_children; + } + uri = xmlParseURI((const char *) href); + if (uri == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_HREF_ERROR, + "Incorrect URI for externalRef %s\n", + href, NULL); + if (ns != NULL) + xmlFree(ns); + if (href != NULL) + xmlFree(href); + delete = cur; + goto skip_children; + } + if (uri->fragment != NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_HREF_ERROR, + "Fragment forbidden in URI for externalRef %s\n", + href, NULL); + if (ns != NULL) + xmlFree(ns); + xmlFreeURI(uri); + if (href != NULL) + xmlFree(href); + delete = cur; + goto skip_children; + } + xmlFreeURI(uri); + base = xmlNodeGetBase(cur->doc, cur); + URL = xmlBuildURI(href, base); + if (URL == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_HREF_ERROR, + "Failed to compute URL for externalRef %s\n", + href, NULL); + if (ns != NULL) + xmlFree(ns); + if (href != NULL) + xmlFree(href); + if (base != NULL) + xmlFree(base); + delete = cur; + goto skip_children; + } + if (href != NULL) + xmlFree(href); + if (base != NULL) + xmlFree(base); + docu = xmlRelaxNGLoadExternalRef(ctxt, URL, ns); + if (docu == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_EXTERNAL_REF_FAILURE, + "Failed to load externalRef %s\n", URL, + NULL); + if (ns != NULL) + xmlFree(ns); + xmlFree(URL); + delete = cur; + goto skip_children; + } + if (ns != NULL) + xmlFree(ns); + xmlFree(URL); + cur->psvi = docu; + } else if (xmlStrEqual(cur->name, BAD_CAST "include")) { + xmlChar *href, *ns, *base, *URL; + xmlRelaxNGIncludePtr incl; + xmlNodePtr tmp; + + href = xmlGetProp(cur, BAD_CAST "href"); + if (href == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_MISSING_HREF, + "xmlRelaxNGParse: include has no href attribute\n", + NULL, NULL); + delete = cur; + goto skip_children; + } + base = xmlNodeGetBase(cur->doc, cur); + URL = xmlBuildURI(href, base); + if (URL == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_HREF_ERROR, + "Failed to compute URL for include %s\n", + href, NULL); + if (href != NULL) + xmlFree(href); + if (base != NULL) + xmlFree(base); + delete = cur; + goto skip_children; + } + if (href != NULL) + xmlFree(href); + if (base != NULL) + xmlFree(base); + ns = xmlGetProp(cur, BAD_CAST "ns"); + if (ns == NULL) { + tmp = cur->parent; + while ((tmp != NULL) && + (tmp->type == XML_ELEMENT_NODE)) { + ns = xmlGetProp(tmp, BAD_CAST "ns"); + if (ns != NULL) + break; + tmp = tmp->parent; + } + } + incl = xmlRelaxNGLoadInclude(ctxt, URL, cur, ns); + if (ns != NULL) + xmlFree(ns); + if (incl == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_INCLUDE_FAILURE, + "Failed to load include %s\n", URL, + NULL); + xmlFree(URL); + delete = cur; + goto skip_children; + } + xmlFree(URL); + cur->psvi = incl; + } else if ((xmlStrEqual(cur->name, BAD_CAST "element")) || + (xmlStrEqual(cur->name, BAD_CAST "attribute"))) + { + xmlChar *name, *ns; + xmlNodePtr text = NULL; + + /* + * Simplification 4.8. name attribute of element + * and attribute elements + */ + name = xmlGetProp(cur, BAD_CAST "name"); + if (name != NULL) { + if (cur->children == NULL) { + text = + xmlNewChild(cur, cur->ns, BAD_CAST "name", + name); + } else { + xmlNodePtr node; + + node = xmlNewDocNode(cur->doc, cur->ns, + BAD_CAST "name", NULL); + if (node != NULL) { + xmlAddPrevSibling(cur->children, node); + text = xmlNewText(name); + xmlAddChild(node, text); + text = node; + } + } + if (text == NULL) { + xmlRngPErr(ctxt, cur, XML_RNGP_CREATE_FAILURE, + "Failed to create a name %s element\n", + name, NULL); + } + xmlUnsetProp(cur, BAD_CAST "name"); + xmlFree(name); + ns = xmlGetProp(cur, BAD_CAST "ns"); + if (ns != NULL) { + if (text != NULL) { + xmlSetProp(text, BAD_CAST "ns", ns); + /* xmlUnsetProp(cur, BAD_CAST "ns"); */ + } + xmlFree(ns); + } else if (xmlStrEqual(cur->name, + BAD_CAST "attribute")) { + xmlSetProp(text, BAD_CAST "ns", BAD_CAST ""); + } + } + } else if ((xmlStrEqual(cur->name, BAD_CAST "name")) || + (xmlStrEqual(cur->name, BAD_CAST "nsName")) || + (xmlStrEqual(cur->name, BAD_CAST "value"))) { + /* + * Simplification 4.8. name attribute of element + * and attribute elements + */ + if (xmlHasProp(cur, BAD_CAST "ns") == NULL) { + xmlNodePtr node; + xmlChar *ns = NULL; + + node = cur->parent; + while ((node != NULL) && + (node->type == XML_ELEMENT_NODE)) { + ns = xmlGetProp(node, BAD_CAST "ns"); + if (ns != NULL) { + break; + } + node = node->parent; + } + if (ns == NULL) { + xmlSetProp(cur, BAD_CAST "ns", BAD_CAST ""); + } else { + xmlSetProp(cur, BAD_CAST "ns", ns); + xmlFree(ns); + } + } + if (xmlStrEqual(cur->name, BAD_CAST "name")) { + xmlChar *name, *local, *prefix; + + /* + * Simplification: 4.10. QNames + */ + name = xmlNodeGetContent(cur); + if (name != NULL) { + local = xmlSplitQName2(name, &prefix); + if (local != NULL) { + xmlNsPtr ns; + + ns = xmlSearchNs(cur->doc, cur, prefix); + if (ns == NULL) { + xmlRngPErr(ctxt, cur, + XML_RNGP_PREFIX_UNDEFINED, + "xmlRelaxNGParse: no namespace for prefix %s\n", + prefix, NULL); + } else { + xmlSetProp(cur, BAD_CAST "ns", + ns->href); + xmlNodeSetContent(cur, local); + } + xmlFree(local); + xmlFree(prefix); + } + xmlFree(name); + } + } + /* + * 4.16 + */ + if (xmlStrEqual(cur->name, BAD_CAST "nsName")) { + if (ctxt->flags & XML_RELAXNG_IN_NSEXCEPT) { + xmlRngPErr(ctxt, cur, + XML_RNGP_PAT_NSNAME_EXCEPT_NSNAME, + "Found nsName/except//nsName forbidden construct\n", + NULL, NULL); + } + } + } else if ((xmlStrEqual(cur->name, BAD_CAST "except")) && + (cur != root)) { + int oldflags = ctxt->flags; + + /* + * 4.16 + */ + if ((cur->parent != NULL) && + (xmlStrEqual + (cur->parent->name, BAD_CAST "anyName"))) { + ctxt->flags |= XML_RELAXNG_IN_ANYEXCEPT; + xmlRelaxNGCleanupTree(ctxt, cur); + ctxt->flags = oldflags; + goto skip_children; + } else if ((cur->parent != NULL) && + (xmlStrEqual + (cur->parent->name, BAD_CAST "nsName"))) { + ctxt->flags |= XML_RELAXNG_IN_NSEXCEPT; + xmlRelaxNGCleanupTree(ctxt, cur); + ctxt->flags = oldflags; + goto skip_children; + } + } else if (xmlStrEqual(cur->name, BAD_CAST "anyName")) { + /* + * 4.16 + */ + if (ctxt->flags & XML_RELAXNG_IN_ANYEXCEPT) { + xmlRngPErr(ctxt, cur, + XML_RNGP_PAT_ANYNAME_EXCEPT_ANYNAME, + "Found anyName/except//anyName forbidden construct\n", + NULL, NULL); + } else if (ctxt->flags & XML_RELAXNG_IN_NSEXCEPT) { + xmlRngPErr(ctxt, cur, + XML_RNGP_PAT_NSNAME_EXCEPT_ANYNAME, + "Found nsName/except//anyName forbidden construct\n", + NULL, NULL); + } + } + /* + * This is not an else since "include" is transformed + * into a div + */ + if (xmlStrEqual(cur->name, BAD_CAST "div")) { + xmlChar *ns; + xmlNodePtr child, ins, tmp; + + /* + * implements rule 4.11 + */ + + ns = xmlGetProp(cur, BAD_CAST "ns"); + + child = cur->children; + ins = cur; + while (child != NULL) { + if (ns != NULL) { + if (!xmlHasProp(child, BAD_CAST "ns")) { + xmlSetProp(child, BAD_CAST "ns", ns); + } + } + tmp = child->next; + xmlUnlinkNode(child); + ins = xmlAddNextSibling(ins, child); + child = tmp; + } + if (ns != NULL) + xmlFree(ns); + /* + * Since we are about to delete cur, if its nsDef is non-NULL we + * need to preserve it (it contains the ns definitions for the + * children we just moved). We'll just stick it on to the end + * of cur->parent's list, since it's never going to be re-serialized + * (bug 143738). + */ + if ((cur->nsDef != NULL) && (cur->parent != NULL)) { + xmlNsPtr parDef = (xmlNsPtr)&cur->parent->nsDef; + while (parDef->next != NULL) + parDef = parDef->next; + parDef->next = cur->nsDef; + cur->nsDef = NULL; + } + delete = cur; + goto skip_children; + } + } + } + /* + * Simplification 4.2 whitespaces + */ + else if ((cur->type == XML_TEXT_NODE) || + (cur->type == XML_CDATA_SECTION_NODE)) { + if (IS_BLANK_NODE(cur)) { + if ((cur->parent != NULL) && + (cur->parent->type == XML_ELEMENT_NODE)) { + if ((!xmlStrEqual(cur->parent->name, BAD_CAST "value")) + && + (!xmlStrEqual + (cur->parent->name, BAD_CAST "param"))) + delete = cur; + } else { + delete = cur; + goto skip_children; + } + } + } else { + delete = cur; + goto skip_children; + } + + /* + * Skip to next node + */ + if (cur->children != NULL) { + if ((cur->children->type != XML_ENTITY_DECL) && + (cur->children->type != XML_ENTITY_REF_NODE) && + (cur->children->type != XML_ENTITY_NODE)) { + cur = cur->children; + continue; + } + } + skip_children: + if (cur->next != NULL) { + cur = cur->next; + continue; + } + + do { + cur = cur->parent; + if (cur == NULL) + break; + if (cur == root) { + cur = NULL; + break; + } + if (cur->next != NULL) { + cur = cur->next; + break; + } + } while (cur != NULL); + } + if (delete != NULL) { + xmlUnlinkNode(delete); + xmlFreeNode(delete); + delete = NULL; + } +} + +/** + * xmlRelaxNGCleanupDoc: + * @ctxt: a Relax-NG parser context + * @doc: an xmldocPtr document pointer + * + * Cleanup the document from unwanted nodes for parsing, resolve + * Include and externalRef lookups. + * + * Returns the cleaned up document or NULL in case of error + */ +static xmlDocPtr +xmlRelaxNGCleanupDoc(xmlRelaxNGParserCtxtPtr ctxt, xmlDocPtr doc) +{ + xmlNodePtr root; + + /* + * Extract the root + */ + root = xmlDocGetRootElement(doc); + if (root == NULL) { + xmlRngPErr(ctxt, (xmlNodePtr) doc, XML_RNGP_EMPTY, "xmlRelaxNGParse: %s is empty\n", + ctxt->URL, NULL); + return (NULL); + } + xmlRelaxNGCleanupTree(ctxt, root); + return (doc); +} + +/** + * xmlRelaxNGParse: + * @ctxt: a Relax-NG parser context + * + * parse a schema definition resource and build an internal + * XML Schema structure which can be used to validate instances. + * + * Returns the internal XML RelaxNG structure built from the resource or + * NULL in case of error + */ +xmlRelaxNGPtr +xmlRelaxNGParse(xmlRelaxNGParserCtxtPtr ctxt) +{ + xmlRelaxNGPtr ret = NULL; + xmlDocPtr doc; + xmlNodePtr root; + + xmlRelaxNGInitTypes(); + + if (ctxt == NULL) + return (NULL); + + /* + * First step is to parse the input document into an DOM/Infoset + */ + if (ctxt->URL != NULL) { + doc = xmlReadFile((const char *) ctxt->URL,NULL,0); + if (doc == NULL) { + xmlRngPErr(ctxt, NULL, XML_RNGP_PARSE_ERROR, + "xmlRelaxNGParse: could not load %s\n", ctxt->URL, + NULL); + return (NULL); + } + } else if (ctxt->buffer != NULL) { + doc = xmlReadMemory(ctxt->buffer, ctxt->size,NULL,NULL,0); + if (doc == NULL) { + xmlRngPErr(ctxt, NULL, XML_RNGP_PARSE_ERROR, + "xmlRelaxNGParse: could not parse schemas\n", NULL, + NULL); + return (NULL); + } + doc->URL = xmlStrdup(BAD_CAST "in_memory_buffer"); + ctxt->URL = xmlStrdup(BAD_CAST "in_memory_buffer"); + } else if (ctxt->document != NULL) { + doc = ctxt->document; + } else { + xmlRngPErr(ctxt, NULL, XML_RNGP_EMPTY, + "xmlRelaxNGParse: nothing to parse\n", NULL, NULL); + return (NULL); + } + ctxt->document = doc; + + /* + * Some preprocessing of the document content + */ + doc = xmlRelaxNGCleanupDoc(ctxt, doc); + if (doc == NULL) { + xmlFreeDoc(ctxt->document); + ctxt->document = NULL; + return (NULL); + } + + /* + * Then do the parsing for good + */ + root = xmlDocGetRootElement(doc); + if (root == NULL) { + xmlRngPErr(ctxt, (xmlNodePtr) doc, + XML_RNGP_EMPTY, "xmlRelaxNGParse: %s is empty\n", + (ctxt->URL ? ctxt->URL : BAD_CAST "schemas"), NULL); + + xmlFreeDoc(ctxt->document); + ctxt->document = NULL; + return (NULL); + } + ret = xmlRelaxNGParseDocument(ctxt, root); + if (ret == NULL) { + xmlFreeDoc(ctxt->document); + ctxt->document = NULL; + return (NULL); + } + + /* + * Check the ref/defines links + */ + /* + * try to preprocess interleaves + */ + if (ctxt->interleaves != NULL) { + xmlHashScan(ctxt->interleaves, xmlRelaxNGComputeInterleaves, ctxt); + } + + /* + * if there was a parsing error return NULL + */ + if (ctxt->nbErrors > 0) { + xmlRelaxNGFree(ret); + ctxt->document = NULL; + xmlFreeDoc(doc); + return (NULL); + } + + /* + * try to compile (parts of) the schemas + */ + if ((ret->topgrammar != NULL) && (ret->topgrammar->start != NULL)) { + if (ret->topgrammar->start->type != XML_RELAXNG_START) { + xmlRelaxNGDefinePtr def; + + def = xmlRelaxNGNewDefine(ctxt, NULL); + if (def != NULL) { + def->type = XML_RELAXNG_START; + def->content = ret->topgrammar->start; + ret->topgrammar->start = def; + } + } + xmlRelaxNGTryCompile(ctxt, ret->topgrammar->start); + } + + /* + * Transfer the pointer for cleanup at the schema level. + */ + ret->doc = doc; + ctxt->document = NULL; + ret->documents = ctxt->documents; + ctxt->documents = NULL; + + ret->includes = ctxt->includes; + ctxt->includes = NULL; + ret->defNr = ctxt->defNr; + ret->defTab = ctxt->defTab; + ctxt->defTab = NULL; + if (ctxt->idref == 1) + ret->idref = 1; + + return (ret); +} + +/** + * xmlRelaxNGSetParserErrors: + * @ctxt: a Relax-NG validation context + * @err: the error callback + * @warn: the warning callback + * @ctx: contextual data for the callbacks + * + * Set the callback functions used to handle errors for a validation context + */ +void +xmlRelaxNGSetParserErrors(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGValidityErrorFunc err, + xmlRelaxNGValidityWarningFunc warn, void *ctx) +{ + if (ctxt == NULL) + return; + ctxt->error = err; + ctxt->warning = warn; + ctxt->serror = NULL; + ctxt->userData = ctx; +} + +/** + * xmlRelaxNGGetParserErrors: + * @ctxt: a Relax-NG validation context + * @err: the error callback result + * @warn: the warning callback result + * @ctx: contextual data for the callbacks result + * + * Get the callback information used to handle errors for a validation context + * + * Returns -1 in case of failure, 0 otherwise. + */ +int +xmlRelaxNGGetParserErrors(xmlRelaxNGParserCtxtPtr ctxt, + xmlRelaxNGValidityErrorFunc * err, + xmlRelaxNGValidityWarningFunc * warn, void **ctx) +{ + if (ctxt == NULL) + return (-1); + if (err != NULL) + *err = ctxt->error; + if (warn != NULL) + *warn = ctxt->warning; + if (ctx != NULL) + *ctx = ctxt->userData; + return (0); +} + +/** + * xmlRelaxNGSetParserStructuredErrors: + * @ctxt: a Relax-NG parser context + * @serror: the error callback + * @ctx: contextual data for the callbacks + * + * Set the callback functions used to handle errors for a parsing context + */ +void +xmlRelaxNGSetParserStructuredErrors(xmlRelaxNGParserCtxtPtr ctxt, + xmlStructuredErrorFunc serror, + void *ctx) +{ + if (ctxt == NULL) + return; + ctxt->serror = serror; + ctxt->error = NULL; + ctxt->warning = NULL; + ctxt->userData = ctx; +} + +#ifdef LIBXML_OUTPUT_ENABLED + +/************************************************************************ + * * + * Dump back a compiled form * + * * + ************************************************************************/ +static void xmlRelaxNGDumpDefine(FILE * output, + xmlRelaxNGDefinePtr define); + +/** + * xmlRelaxNGDumpDefines: + * @output: the file output + * @defines: a list of define structures + * + * Dump a RelaxNG structure back + */ +static void +xmlRelaxNGDumpDefines(FILE * output, xmlRelaxNGDefinePtr defines) +{ + while (defines != NULL) { + xmlRelaxNGDumpDefine(output, defines); + defines = defines->next; + } +} + +/** + * xmlRelaxNGDumpDefine: + * @output: the file output + * @define: a define structure + * + * Dump a RelaxNG structure back + */ +static void +xmlRelaxNGDumpDefine(FILE * output, xmlRelaxNGDefinePtr define) +{ + if (define == NULL) + return; + switch (define->type) { + case XML_RELAXNG_EMPTY: + fprintf(output, "<empty/>\n"); + break; + case XML_RELAXNG_NOT_ALLOWED: + fprintf(output, "<notAllowed/>\n"); + break; + case XML_RELAXNG_TEXT: + fprintf(output, "<text/>\n"); + break; + case XML_RELAXNG_ELEMENT: + fprintf(output, "<element>\n"); + if (define->name != NULL) { + fprintf(output, "<name"); + if (define->ns != NULL) + fprintf(output, " ns=\"%s\"", define->ns); + fprintf(output, ">%s</name>\n", define->name); + } + xmlRelaxNGDumpDefines(output, define->attrs); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</element>\n"); + break; + case XML_RELAXNG_LIST: + fprintf(output, "<list>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</list>\n"); + break; + case XML_RELAXNG_ONEORMORE: + fprintf(output, "<oneOrMore>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</oneOrMore>\n"); + break; + case XML_RELAXNG_ZEROORMORE: + fprintf(output, "<zeroOrMore>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</zeroOrMore>\n"); + break; + case XML_RELAXNG_CHOICE: + fprintf(output, "<choice>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</choice>\n"); + break; + case XML_RELAXNG_GROUP: + fprintf(output, "<group>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</group>\n"); + break; + case XML_RELAXNG_INTERLEAVE: + fprintf(output, "<interleave>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</interleave>\n"); + break; + case XML_RELAXNG_OPTIONAL: + fprintf(output, "<optional>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</optional>\n"); + break; + case XML_RELAXNG_ATTRIBUTE: + fprintf(output, "<attribute>\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</attribute>\n"); + break; + case XML_RELAXNG_DEF: + fprintf(output, "<define"); + if (define->name != NULL) + fprintf(output, " name=\"%s\"", define->name); + fprintf(output, ">\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</define>\n"); + break; + case XML_RELAXNG_REF: + fprintf(output, "<ref"); + if (define->name != NULL) + fprintf(output, " name=\"%s\"", define->name); + fprintf(output, ">\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</ref>\n"); + break; + case XML_RELAXNG_PARENTREF: + fprintf(output, "<parentRef"); + if (define->name != NULL) + fprintf(output, " name=\"%s\"", define->name); + fprintf(output, ">\n"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</parentRef>\n"); + break; + case XML_RELAXNG_EXTERNALREF: + fprintf(output, "<externalRef>"); + xmlRelaxNGDumpDefines(output, define->content); + fprintf(output, "</externalRef>\n"); + break; + case XML_RELAXNG_DATATYPE: + case XML_RELAXNG_VALUE: + TODO break; + case XML_RELAXNG_START: + case XML_RELAXNG_EXCEPT: + case XML_RELAXNG_PARAM: + TODO break; + case XML_RELAXNG_NOOP: + xmlRelaxNGDumpDefines(output, define->content); + break; + } +} + +/** + * xmlRelaxNGDumpGrammar: + * @output: the file output + * @grammar: a grammar structure + * @top: is this a top grammar + * + * Dump a RelaxNG structure back + */ +static void +xmlRelaxNGDumpGrammar(FILE * output, xmlRelaxNGGrammarPtr grammar, int top) +{ + if (grammar == NULL) + return; + + fprintf(output, "<grammar"); + if (top) + fprintf(output, " xmlns=\"http://relaxng.org/ns/structure/1.0\""); + switch (grammar->combine) { + case XML_RELAXNG_COMBINE_UNDEFINED: + break; + case XML_RELAXNG_COMBINE_CHOICE: + fprintf(output, " combine=\"choice\""); + break; + case XML_RELAXNG_COMBINE_INTERLEAVE: + fprintf(output, " combine=\"interleave\""); + break; + default: + fprintf(output, " <!-- invalid combine value -->"); + } + fprintf(output, ">\n"); + if (grammar->start == NULL) { + fprintf(output, " <!-- grammar had no start -->"); + } else { + fprintf(output, "<start>\n"); + xmlRelaxNGDumpDefine(output, grammar->start); + fprintf(output, "</start>\n"); + } + /* TODO ? Dump the defines ? */ + fprintf(output, "</grammar>\n"); +} + +/** + * xmlRelaxNGDump: + * @output: the file output + * @schema: a schema structure + * + * Dump a RelaxNG structure back + */ +void +xmlRelaxNGDump(FILE * output, xmlRelaxNGPtr schema) +{ + if (output == NULL) + return; + if (schema == NULL) { + fprintf(output, "RelaxNG empty or failed to compile\n"); + return; + } + fprintf(output, "RelaxNG: "); + if (schema->doc == NULL) { + fprintf(output, "no document\n"); + } else if (schema->doc->URL != NULL) { + fprintf(output, "%s\n", schema->doc->URL); + } else { + fprintf(output, "\n"); + } + if (schema->topgrammar == NULL) { + fprintf(output, "RelaxNG has no top grammar\n"); + return; + } + xmlRelaxNGDumpGrammar(output, schema->topgrammar, 1); +} + +/** + * xmlRelaxNGDumpTree: + * @output: the file output + * @schema: a schema structure + * + * Dump the transformed RelaxNG tree. + */ +void +xmlRelaxNGDumpTree(FILE * output, xmlRelaxNGPtr schema) +{ + if (output == NULL) + return; + if (schema == NULL) { + fprintf(output, "RelaxNG empty or failed to compile\n"); + return; + } + if (schema->doc == NULL) { + fprintf(output, "no document\n"); + } else { + xmlDocDump(output, schema->doc); + } +} +#endif /* LIBXML_OUTPUT_ENABLED */ + +/************************************************************************ + * * + * Validation of compiled content * + * * + ************************************************************************/ +static int xmlRelaxNGValidateDefinition(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define); + +/** + * xmlRelaxNGValidateCompiledCallback: + * @exec: the regular expression instance + * @token: the token which matched + * @transdata: callback data, the define for the subelement if available + @ @inputdata: callback data, the Relax NG validation context + * + * Handle the callback and if needed validate the element children. + */ +static void +xmlRelaxNGValidateCompiledCallback(xmlRegExecCtxtPtr exec ATTRIBUTE_UNUSED, + const xmlChar * token, + void *transdata, void *inputdata) +{ + xmlRelaxNGValidCtxtPtr ctxt = (xmlRelaxNGValidCtxtPtr) inputdata; + xmlRelaxNGDefinePtr define = (xmlRelaxNGDefinePtr) transdata; + int ret; + +#ifdef DEBUG_COMPILE + xmlGenericError(xmlGenericErrorContext, + "Compiled callback for: '%s'\n", token); +#endif + if (ctxt == NULL) { + fprintf(stderr, "callback on %s missing context\n", token); + return; + } + if (define == NULL) { + if (token[0] == '#') + return; + fprintf(stderr, "callback on %s missing define\n", token); + if ((ctxt != NULL) && (ctxt->errNo == XML_RELAXNG_OK)) + ctxt->errNo = XML_RELAXNG_ERR_INTERNAL; + return; + } + if ((ctxt == NULL) || (define == NULL)) { + fprintf(stderr, "callback on %s missing info\n", token); + if ((ctxt != NULL) && (ctxt->errNo == XML_RELAXNG_OK)) + ctxt->errNo = XML_RELAXNG_ERR_INTERNAL; + return; + } else if (define->type != XML_RELAXNG_ELEMENT) { + fprintf(stderr, "callback on %s define is not element\n", token); + if (ctxt->errNo == XML_RELAXNG_OK) + ctxt->errNo = XML_RELAXNG_ERR_INTERNAL; + return; + } + ret = xmlRelaxNGValidateDefinition(ctxt, define); + if (ret != 0) + ctxt->perr = ret; +} + +/** + * xmlRelaxNGValidateCompiledContent: + * @ctxt: the RelaxNG validation context + * @regexp: the regular expression as compiled + * @content: list of children to test against the regexp + * + * Validate the content model of an element or start using the regexp + * + * Returns 0 in case of success, -1 in case of error. + */ +static int +xmlRelaxNGValidateCompiledContent(xmlRelaxNGValidCtxtPtr ctxt, + xmlRegexpPtr regexp, xmlNodePtr content) +{ + xmlRegExecCtxtPtr exec; + xmlNodePtr cur; + int ret = 0; + int oldperr; + + if ((ctxt == NULL) || (regexp == NULL)) + return (-1); + oldperr = ctxt->perr; + exec = xmlRegNewExecCtxt(regexp, + xmlRelaxNGValidateCompiledCallback, ctxt); + ctxt->perr = 0; + cur = content; + while (cur != NULL) { + ctxt->state->seq = cur; + switch (cur->type) { + case XML_TEXT_NODE: + case XML_CDATA_SECTION_NODE: + if (xmlIsBlankNode(cur)) + break; + ret = xmlRegExecPushString(exec, BAD_CAST "#text", ctxt); + if (ret < 0) { + VALID_ERR2(XML_RELAXNG_ERR_TEXTWRONG, + cur->parent->name); + } + break; + case XML_ELEMENT_NODE: + if (cur->ns != NULL) { + ret = xmlRegExecPushString2(exec, cur->name, + cur->ns->href, ctxt); + } else { + ret = xmlRegExecPushString(exec, cur->name, ctxt); + } + if (ret < 0) { + VALID_ERR2(XML_RELAXNG_ERR_ELEMWRONG, cur->name); + } + break; + default: + break; + } + if (ret < 0) + break; + /* + * Switch to next element + */ + cur = cur->next; + } + ret = xmlRegExecPushString(exec, NULL, NULL); + if (ret == 1) { + ret = 0; + ctxt->state->seq = NULL; + } else if (ret == 0) { + /* + * TODO: get some of the names needed to exit the current state of exec + */ + VALID_ERR2(XML_RELAXNG_ERR_NOELEM, BAD_CAST ""); + ret = -1; + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + } else { + ret = -1; + } + xmlRegFreeExecCtxt(exec); + /* + * There might be content model errors outside of the pure + * regexp validation, e.g. for attribute values. + */ + if ((ret == 0) && (ctxt->perr != 0)) { + ret = ctxt->perr; + } + ctxt->perr = oldperr; + return (ret); +} + +/************************************************************************ + * * + * Progressive validation of when possible * + * * + ************************************************************************/ +static int xmlRelaxNGValidateAttributeList(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr defines); +static int xmlRelaxNGValidateElementEnd(xmlRelaxNGValidCtxtPtr ctxt, + int dolog); +static void xmlRelaxNGLogBestError(xmlRelaxNGValidCtxtPtr ctxt); + +/** + * xmlRelaxNGElemPush: + * @ctxt: the validation context + * @exec: the regexp runtime for the new content model + * + * Push a new regexp for the current node content model on the stack + * + * Returns 0 in case of success and -1 in case of error. + */ +static int +xmlRelaxNGElemPush(xmlRelaxNGValidCtxtPtr ctxt, xmlRegExecCtxtPtr exec) +{ + if (ctxt->elemTab == NULL) { + ctxt->elemMax = 10; + ctxt->elemTab = (xmlRegExecCtxtPtr *) xmlMalloc(ctxt->elemMax * + sizeof + (xmlRegExecCtxtPtr)); + if (ctxt->elemTab == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + return (-1); + } + } + if (ctxt->elemNr >= ctxt->elemMax) { + ctxt->elemMax *= 2; + ctxt->elemTab = (xmlRegExecCtxtPtr *) xmlRealloc(ctxt->elemTab, + ctxt->elemMax * + sizeof + (xmlRegExecCtxtPtr)); + if (ctxt->elemTab == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + return (-1); + } + } + ctxt->elemTab[ctxt->elemNr++] = exec; + ctxt->elem = exec; + return (0); +} + +/** + * xmlRelaxNGElemPop: + * @ctxt: the validation context + * + * Pop the regexp of the current node content model from the stack + * + * Returns the exec or NULL if empty + */ +static xmlRegExecCtxtPtr +xmlRelaxNGElemPop(xmlRelaxNGValidCtxtPtr ctxt) +{ + xmlRegExecCtxtPtr ret; + + if (ctxt->elemNr <= 0) + return (NULL); + ctxt->elemNr--; + ret = ctxt->elemTab[ctxt->elemNr]; + ctxt->elemTab[ctxt->elemNr] = NULL; + if (ctxt->elemNr > 0) + ctxt->elem = ctxt->elemTab[ctxt->elemNr - 1]; + else + ctxt->elem = NULL; + return (ret); +} + +/** + * xmlRelaxNGValidateProgressiveCallback: + * @exec: the regular expression instance + * @token: the token which matched + * @transdata: callback data, the define for the subelement if available + @ @inputdata: callback data, the Relax NG validation context + * + * Handle the callback and if needed validate the element children. + * some of the in/out informations are passed via the context in @inputdata. + */ +static void +xmlRelaxNGValidateProgressiveCallback(xmlRegExecCtxtPtr exec + ATTRIBUTE_UNUSED, + const xmlChar * token, + void *transdata, void *inputdata) +{ + xmlRelaxNGValidCtxtPtr ctxt = (xmlRelaxNGValidCtxtPtr) inputdata; + xmlRelaxNGDefinePtr define = (xmlRelaxNGDefinePtr) transdata; + xmlRelaxNGValidStatePtr state, oldstate; + xmlNodePtr node; + int ret = 0, oldflags; + +#ifdef DEBUG_PROGRESSIVE + xmlGenericError(xmlGenericErrorContext, + "Progressive callback for: '%s'\n", token); +#endif + if (ctxt == NULL) { + fprintf(stderr, "callback on %s missing context\n", token); + return; + } + node = ctxt->pnode; + ctxt->pstate = 1; + if (define == NULL) { + if (token[0] == '#') + return; + fprintf(stderr, "callback on %s missing define\n", token); + if ((ctxt != NULL) && (ctxt->errNo == XML_RELAXNG_OK)) + ctxt->errNo = XML_RELAXNG_ERR_INTERNAL; + ctxt->pstate = -1; + return; + } + if ((ctxt == NULL) || (define == NULL)) { + fprintf(stderr, "callback on %s missing info\n", token); + if ((ctxt != NULL) && (ctxt->errNo == XML_RELAXNG_OK)) + ctxt->errNo = XML_RELAXNG_ERR_INTERNAL; + ctxt->pstate = -1; + return; + } else if (define->type != XML_RELAXNG_ELEMENT) { + fprintf(stderr, "callback on %s define is not element\n", token); + if (ctxt->errNo == XML_RELAXNG_OK) + ctxt->errNo = XML_RELAXNG_ERR_INTERNAL; + ctxt->pstate = -1; + return; + } + if (node->type != XML_ELEMENT_NODE) { + VALID_ERR(XML_RELAXNG_ERR_NOTELEM); + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + ctxt->pstate = -1; + return; + } + if (define->contModel == NULL) { + /* + * this node cannot be validated in a streamable fashion + */ +#ifdef DEBUG_PROGRESSIVE + xmlGenericError(xmlGenericErrorContext, + "Element '%s' validation is not streamable\n", + token); +#endif + ctxt->pstate = 0; + ctxt->pdef = define; + return; + } + exec = xmlRegNewExecCtxt(define->contModel, + xmlRelaxNGValidateProgressiveCallback, ctxt); + if (exec == NULL) { + ctxt->pstate = -1; + return; + } + xmlRelaxNGElemPush(ctxt, exec); + + /* + * Validate the attributes part of the content. + */ + state = xmlRelaxNGNewValidState(ctxt, node); + if (state == NULL) { + ctxt->pstate = -1; + return; + } + oldstate = ctxt->state; + ctxt->state = state; + if (define->attrs != NULL) { + ret = xmlRelaxNGValidateAttributeList(ctxt, define->attrs); + if (ret != 0) { + ctxt->pstate = -1; + VALID_ERR2(XML_RELAXNG_ERR_ATTRVALID, node->name); + } + } + if (ctxt->state != NULL) { + ctxt->state->seq = NULL; + ret = xmlRelaxNGValidateElementEnd(ctxt, 1); + if (ret != 0) { + ctxt->pstate = -1; + } + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + } else if (ctxt->states != NULL) { + int tmp = -1, i; + + oldflags = ctxt->flags; + + for (i = 0; i < ctxt->states->nbState; i++) { + state = ctxt->states->tabState[i]; + ctxt->state = state; + ctxt->state->seq = NULL; + + if (xmlRelaxNGValidateElementEnd(ctxt, 0) == 0) { + tmp = 0; + break; + } + } + if (tmp != 0) { + /* + * validation error, log the message for the "best" one + */ + ctxt->flags |= FLAGS_IGNORABLE; + xmlRelaxNGLogBestError(ctxt); + } + for (i = 0; i < ctxt->states->nbState; i++) { + xmlRelaxNGFreeValidState(ctxt, ctxt->states->tabState[i]); + } + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + if ((ret == 0) && (tmp == -1)) + ctxt->pstate = -1; + ctxt->flags = oldflags; + } + if (ctxt->pstate == -1) { + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) { + xmlRelaxNGDumpValidError(ctxt); + } + } + ctxt->state = oldstate; +} + +/** + * xmlRelaxNGValidatePushElement: + * @ctxt: the validation context + * @doc: a document instance + * @elem: an element instance + * + * Push a new element start on the RelaxNG validation stack. + * + * returns 1 if no validation problem was found or 0 if validating the + * element requires a full node, and -1 in case of error. + */ +int +xmlRelaxNGValidatePushElement(xmlRelaxNGValidCtxtPtr ctxt, + xmlDocPtr doc ATTRIBUTE_UNUSED, + xmlNodePtr elem) +{ + int ret = 1; + + if ((ctxt == NULL) || (elem == NULL)) + return (-1); + +#ifdef DEBUG_PROGRESSIVE + xmlGenericError(xmlGenericErrorContext, "PushElem %s\n", elem->name); +#endif + if (ctxt->elem == 0) { + xmlRelaxNGPtr schema; + xmlRelaxNGGrammarPtr grammar; + xmlRegExecCtxtPtr exec; + xmlRelaxNGDefinePtr define; + + schema = ctxt->schema; + if (schema == NULL) { + VALID_ERR(XML_RELAXNG_ERR_NOGRAMMAR); + return (-1); + } + grammar = schema->topgrammar; + if ((grammar == NULL) || (grammar->start == NULL)) { + VALID_ERR(XML_RELAXNG_ERR_NOGRAMMAR); + return (-1); + } + define = grammar->start; + if (define->contModel == NULL) { + ctxt->pdef = define; + return (0); + } + exec = xmlRegNewExecCtxt(define->contModel, + xmlRelaxNGValidateProgressiveCallback, + ctxt); + if (exec == NULL) { + return (-1); + } + xmlRelaxNGElemPush(ctxt, exec); + } + ctxt->pnode = elem; + ctxt->pstate = 0; + if (elem->ns != NULL) { + ret = + xmlRegExecPushString2(ctxt->elem, elem->name, elem->ns->href, + ctxt); + } else { + ret = xmlRegExecPushString(ctxt->elem, elem->name, ctxt); + } + if (ret < 0) { + VALID_ERR2(XML_RELAXNG_ERR_ELEMWRONG, elem->name); + } else { + if (ctxt->pstate == 0) + ret = 0; + else if (ctxt->pstate < 0) + ret = -1; + else + ret = 1; + } +#ifdef DEBUG_PROGRESSIVE + if (ret < 0) + xmlGenericError(xmlGenericErrorContext, "PushElem %s failed\n", + elem->name); +#endif + return (ret); +} + +/** + * xmlRelaxNGValidatePushCData: + * @ctxt: the RelaxNG validation context + * @data: some character data read + * @len: the length of the data + * + * check the CData parsed for validation in the current stack + * + * returns 1 if no validation problem was found or -1 otherwise + */ +int +xmlRelaxNGValidatePushCData(xmlRelaxNGValidCtxtPtr ctxt, + const xmlChar * data, int len ATTRIBUTE_UNUSED) +{ + int ret = 1; + + if ((ctxt == NULL) || (ctxt->elem == NULL) || (data == NULL)) + return (-1); + +#ifdef DEBUG_PROGRESSIVE + xmlGenericError(xmlGenericErrorContext, "CDATA %s %d\n", data, len); +#endif + + while (*data != 0) { + if (!IS_BLANK_CH(*data)) + break; + data++; + } + if (*data == 0) + return (1); + + ret = xmlRegExecPushString(ctxt->elem, BAD_CAST "#text", ctxt); + if (ret < 0) { + VALID_ERR2(XML_RELAXNG_ERR_TEXTWRONG, BAD_CAST " TODO "); +#ifdef DEBUG_PROGRESSIVE + xmlGenericError(xmlGenericErrorContext, "CDATA failed\n"); +#endif + + return (-1); + } + return (1); +} + +/** + * xmlRelaxNGValidatePopElement: + * @ctxt: the RelaxNG validation context + * @doc: a document instance + * @elem: an element instance + * + * Pop the element end from the RelaxNG validation stack. + * + * returns 1 if no validation problem was found or 0 otherwise + */ +int +xmlRelaxNGValidatePopElement(xmlRelaxNGValidCtxtPtr ctxt, + xmlDocPtr doc ATTRIBUTE_UNUSED, + xmlNodePtr elem) +{ + int ret; + xmlRegExecCtxtPtr exec; + + if ((ctxt == NULL) || (ctxt->elem == NULL) || (elem == NULL)) + return (-1); +#ifdef DEBUG_PROGRESSIVE + xmlGenericError(xmlGenericErrorContext, "PopElem %s\n", elem->name); +#endif + /* + * verify that we reached a terminal state of the content model. + */ + exec = xmlRelaxNGElemPop(ctxt); + ret = xmlRegExecPushString(exec, NULL, NULL); + if (ret == 0) { + /* + * TODO: get some of the names needed to exit the current state of exec + */ + VALID_ERR2(XML_RELAXNG_ERR_NOELEM, BAD_CAST ""); + ret = -1; + } else if (ret < 0) { + ret = -1; + } else { + ret = 1; + } + xmlRegFreeExecCtxt(exec); +#ifdef DEBUG_PROGRESSIVE + if (ret < 0) + xmlGenericError(xmlGenericErrorContext, "PopElem %s failed\n", + elem->name); +#endif + return (ret); +} + +/** + * xmlRelaxNGValidateFullElement: + * @ctxt: the validation context + * @doc: a document instance + * @elem: an element instance + * + * Validate a full subtree when xmlRelaxNGValidatePushElement() returned + * 0 and the content of the node has been expanded. + * + * returns 1 if no validation problem was found or -1 in case of error. + */ +int +xmlRelaxNGValidateFullElement(xmlRelaxNGValidCtxtPtr ctxt, + xmlDocPtr doc ATTRIBUTE_UNUSED, + xmlNodePtr elem) +{ + int ret; + xmlRelaxNGValidStatePtr state; + + if ((ctxt == NULL) || (ctxt->pdef == NULL) || (elem == NULL)) + return (-1); +#ifdef DEBUG_PROGRESSIVE + xmlGenericError(xmlGenericErrorContext, "FullElem %s\n", elem->name); +#endif + state = xmlRelaxNGNewValidState(ctxt, elem->parent); + if (state == NULL) { + return (-1); + } + state->seq = elem; + ctxt->state = state; + ctxt->errNo = XML_RELAXNG_OK; + ret = xmlRelaxNGValidateDefinition(ctxt, ctxt->pdef); + if ((ret != 0) || (ctxt->errNo != XML_RELAXNG_OK)) + ret = -1; + else + ret = 1; + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; +#ifdef DEBUG_PROGRESSIVE + if (ret < 0) + xmlGenericError(xmlGenericErrorContext, "FullElem %s failed\n", + elem->name); +#endif + return (ret); +} + +/************************************************************************ + * * + * Generic interpreted validation implementation * + * * + ************************************************************************/ +static int xmlRelaxNGValidateValue(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define); + +/** + * xmlRelaxNGSkipIgnored: + * @ctxt: a schema validation context + * @node: the top node. + * + * Skip ignorable nodes in that context + * + * Returns the new sibling or NULL in case of error. + */ +static xmlNodePtr +xmlRelaxNGSkipIgnored(xmlRelaxNGValidCtxtPtr ctxt ATTRIBUTE_UNUSED, + xmlNodePtr node) +{ + /* + * TODO complete and handle entities + */ + while ((node != NULL) && + ((node->type == XML_COMMENT_NODE) || + (node->type == XML_PI_NODE) || + (node->type == XML_XINCLUDE_START) || + (node->type == XML_XINCLUDE_END) || + (((node->type == XML_TEXT_NODE) || + (node->type == XML_CDATA_SECTION_NODE)) && + ((ctxt->flags & FLAGS_MIXED_CONTENT) || + (IS_BLANK_NODE(node)))))) { + node = node->next; + } + return (node); +} + +/** + * xmlRelaxNGNormalize: + * @ctxt: a schema validation context + * @str: the string to normalize + * + * Implements the normalizeWhiteSpace( s ) function from + * section 6.2.9 of the spec + * + * Returns the new string or NULL in case of error. + */ +static xmlChar * +xmlRelaxNGNormalize(xmlRelaxNGValidCtxtPtr ctxt, const xmlChar * str) +{ + xmlChar *ret, *p; + const xmlChar *tmp; + int len; + + if (str == NULL) + return (NULL); + tmp = str; + while (*tmp != 0) + tmp++; + len = tmp - str; + + ret = (xmlChar *) xmlMallocAtomic((len + 1) * sizeof(xmlChar)); + if (ret == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + return (NULL); + } + p = ret; + while (IS_BLANK_CH(*str)) + str++; + while (*str != 0) { + if (IS_BLANK_CH(*str)) { + while (IS_BLANK_CH(*str)) + str++; + if (*str == 0) + break; + *p++ = ' '; + } else + *p++ = *str++; + } + *p = 0; + return (ret); +} + +/** + * xmlRelaxNGValidateDatatype: + * @ctxt: a Relax-NG validation context + * @value: the string value + * @type: the datatype definition + * @node: the node + * + * Validate the given value against the datatype + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateDatatype(xmlRelaxNGValidCtxtPtr ctxt, + const xmlChar * value, + xmlRelaxNGDefinePtr define, xmlNodePtr node) +{ + int ret, tmp; + xmlRelaxNGTypeLibraryPtr lib; + void *result = NULL; + xmlRelaxNGDefinePtr cur; + + if ((define == NULL) || (define->data == NULL)) { + return (-1); + } + lib = (xmlRelaxNGTypeLibraryPtr) define->data; + if (lib->check != NULL) { + if ((define->attrs != NULL) && + (define->attrs->type == XML_RELAXNG_PARAM)) { + ret = + lib->check(lib->data, define->name, value, &result, node); + } else { + ret = lib->check(lib->data, define->name, value, NULL, node); + } + } else + ret = -1; + if (ret < 0) { + VALID_ERR2(XML_RELAXNG_ERR_TYPE, define->name); + if ((result != NULL) && (lib != NULL) && (lib->freef != NULL)) + lib->freef(lib->data, result); + return (-1); + } else if (ret == 1) { + ret = 0; + } else if (ret == 2) { + VALID_ERR2P(XML_RELAXNG_ERR_DUPID, value); + } else { + VALID_ERR3P(XML_RELAXNG_ERR_TYPEVAL, define->name, value); + ret = -1; + } + cur = define->attrs; + while ((ret == 0) && (cur != NULL) && (cur->type == XML_RELAXNG_PARAM)) { + if (lib->facet != NULL) { + tmp = lib->facet(lib->data, define->name, cur->name, + cur->value, value, result); + if (tmp != 0) + ret = -1; + } + cur = cur->next; + } + if ((ret == 0) && (define->content != NULL)) { + const xmlChar *oldvalue, *oldendvalue; + + oldvalue = ctxt->state->value; + oldendvalue = ctxt->state->endvalue; + ctxt->state->value = (xmlChar *) value; + ctxt->state->endvalue = NULL; + ret = xmlRelaxNGValidateValue(ctxt, define->content); + ctxt->state->value = (xmlChar *) oldvalue; + ctxt->state->endvalue = (xmlChar *) oldendvalue; + } + if ((result != NULL) && (lib != NULL) && (lib->freef != NULL)) + lib->freef(lib->data, result); + return (ret); +} + +/** + * xmlRelaxNGNextValue: + * @ctxt: a Relax-NG validation context + * + * Skip to the next value when validating within a list + * + * Returns 0 if the operation succeeded or an error code. + */ +static int +xmlRelaxNGNextValue(xmlRelaxNGValidCtxtPtr ctxt) +{ + xmlChar *cur; + + cur = ctxt->state->value; + if ((cur == NULL) || (ctxt->state->endvalue == NULL)) { + ctxt->state->value = NULL; + ctxt->state->endvalue = NULL; + return (0); + } + while (*cur != 0) + cur++; + while ((cur != ctxt->state->endvalue) && (*cur == 0)) + cur++; + if (cur == ctxt->state->endvalue) + ctxt->state->value = NULL; + else + ctxt->state->value = cur; + return (0); +} + +/** + * xmlRelaxNGValidateValueList: + * @ctxt: a Relax-NG validation context + * @defines: the list of definitions to verify + * + * Validate the given set of definitions for the current value + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateValueList(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr defines) +{ + int ret = 0; + + while (defines != NULL) { + ret = xmlRelaxNGValidateValue(ctxt, defines); + if (ret != 0) + break; + defines = defines->next; + } + return (ret); +} + +/** + * xmlRelaxNGValidateValue: + * @ctxt: a Relax-NG validation context + * @define: the definition to verify + * + * Validate the given definition for the current value + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateValue(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define) +{ + int ret = 0, oldflags; + xmlChar *value; + + value = ctxt->state->value; + switch (define->type) { + case XML_RELAXNG_EMPTY:{ + if ((value != NULL) && (value[0] != 0)) { + int idx = 0; + + while (IS_BLANK_CH(value[idx])) + idx++; + if (value[idx] != 0) + ret = -1; + } + break; + } + case XML_RELAXNG_TEXT: + break; + case XML_RELAXNG_VALUE:{ + if (!xmlStrEqual(value, define->value)) { + if (define->name != NULL) { + xmlRelaxNGTypeLibraryPtr lib; + + lib = (xmlRelaxNGTypeLibraryPtr) define->data; + if ((lib != NULL) && (lib->comp != NULL)) { + ret = lib->comp(lib->data, define->name, + define->value, define->node, + (void *) define->attrs, + value, ctxt->state->node); + } else + ret = -1; + if (ret < 0) { + VALID_ERR2(XML_RELAXNG_ERR_TYPECMP, + define->name); + return (-1); + } else if (ret == 1) { + ret = 0; + } else { + ret = -1; + } + } else { + xmlChar *nval, *nvalue; + + /* + * TODO: trivial optimizations are possible by + * computing at compile-time + */ + nval = xmlRelaxNGNormalize(ctxt, define->value); + nvalue = xmlRelaxNGNormalize(ctxt, value); + + if ((nval == NULL) || (nvalue == NULL) || + (!xmlStrEqual(nval, nvalue))) + ret = -1; + if (nval != NULL) + xmlFree(nval); + if (nvalue != NULL) + xmlFree(nvalue); + } + } + if (ret == 0) + xmlRelaxNGNextValue(ctxt); + break; + } + case XML_RELAXNG_DATATYPE:{ + ret = xmlRelaxNGValidateDatatype(ctxt, value, define, + ctxt->state->seq); + if (ret == 0) + xmlRelaxNGNextValue(ctxt); + + break; + } + case XML_RELAXNG_CHOICE:{ + xmlRelaxNGDefinePtr list = define->content; + xmlChar *oldvalue; + + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + + oldvalue = ctxt->state->value; + while (list != NULL) { + ret = xmlRelaxNGValidateValue(ctxt, list); + if (ret == 0) { + break; + } + ctxt->state->value = oldvalue; + list = list->next; + } + ctxt->flags = oldflags; + if (ret != 0) { + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + } else { + if (ctxt->errNr > 0) + xmlRelaxNGPopErrors(ctxt, 0); + } + break; + } + case XML_RELAXNG_LIST:{ + xmlRelaxNGDefinePtr list = define->content; + xmlChar *oldvalue, *oldend, *val, *cur; + +#ifdef DEBUG_LIST + int nb_values = 0; +#endif + + oldvalue = ctxt->state->value; + oldend = ctxt->state->endvalue; + + val = xmlStrdup(oldvalue); + if (val == NULL) { + val = xmlStrdup(BAD_CAST ""); + } + if (val == NULL) { + VALID_ERR(XML_RELAXNG_ERR_NOSTATE); + return (-1); + } + cur = val; + while (*cur != 0) { + if (IS_BLANK_CH(*cur)) { + *cur = 0; + cur++; +#ifdef DEBUG_LIST + nb_values++; +#endif + while (IS_BLANK_CH(*cur)) + *cur++ = 0; + } else + cur++; + } +#ifdef DEBUG_LIST + xmlGenericError(xmlGenericErrorContext, + "list value: '%s' found %d items\n", + oldvalue, nb_values); + nb_values = 0; +#endif + ctxt->state->endvalue = cur; + cur = val; + while ((*cur == 0) && (cur != ctxt->state->endvalue)) + cur++; + + ctxt->state->value = cur; + + while (list != NULL) { + if (ctxt->state->value == ctxt->state->endvalue) + ctxt->state->value = NULL; + ret = xmlRelaxNGValidateValue(ctxt, list); + if (ret != 0) { +#ifdef DEBUG_LIST + xmlGenericError(xmlGenericErrorContext, + "Failed to validate value: '%s' with %d rule\n", + ctxt->state->value, nb_values); +#endif + break; + } +#ifdef DEBUG_LIST + nb_values++; +#endif + list = list->next; + } + + if ((ret == 0) && (ctxt->state->value != NULL) && + (ctxt->state->value != ctxt->state->endvalue)) { + VALID_ERR2(XML_RELAXNG_ERR_LISTEXTRA, + ctxt->state->value); + ret = -1; + } + xmlFree(val); + ctxt->state->value = oldvalue; + ctxt->state->endvalue = oldend; + break; + } + case XML_RELAXNG_ONEORMORE: + ret = xmlRelaxNGValidateValueList(ctxt, define->content); + if (ret != 0) { + break; + } + /* Falls through. */ + case XML_RELAXNG_ZEROORMORE:{ + xmlChar *cur, *temp; + + if ((ctxt->state->value == NULL) || + (*ctxt->state->value == 0)) { + ret = 0; + break; + } + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + cur = ctxt->state->value; + temp = NULL; + while ((cur != NULL) && (cur != ctxt->state->endvalue) && + (temp != cur)) { + temp = cur; + ret = + xmlRelaxNGValidateValueList(ctxt, define->content); + if (ret != 0) { + ctxt->state->value = temp; + ret = 0; + break; + } + cur = ctxt->state->value; + } + ctxt->flags = oldflags; + if (ctxt->errNr > 0) + xmlRelaxNGPopErrors(ctxt, 0); + break; + } + case XML_RELAXNG_OPTIONAL:{ + xmlChar *temp; + + if ((ctxt->state->value == NULL) || + (*ctxt->state->value == 0)) { + ret = 0; + break; + } + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + temp = ctxt->state->value; + ret = xmlRelaxNGValidateValue(ctxt, define->content); + ctxt->flags = oldflags; + if (ret != 0) { + ctxt->state->value = temp; + if (ctxt->errNr > 0) + xmlRelaxNGPopErrors(ctxt, 0); + ret = 0; + break; + } + if (ctxt->errNr > 0) + xmlRelaxNGPopErrors(ctxt, 0); + break; + } + case XML_RELAXNG_EXCEPT:{ + xmlRelaxNGDefinePtr list; + + list = define->content; + while (list != NULL) { + ret = xmlRelaxNGValidateValue(ctxt, list); + if (ret == 0) { + ret = -1; + break; + } else + ret = 0; + list = list->next; + } + break; + } + case XML_RELAXNG_DEF: + case XML_RELAXNG_GROUP:{ + xmlRelaxNGDefinePtr list; + + list = define->content; + while (list != NULL) { + ret = xmlRelaxNGValidateValue(ctxt, list); + if (ret != 0) { + ret = -1; + break; + } else + ret = 0; + list = list->next; + } + break; + } + case XML_RELAXNG_REF: + case XML_RELAXNG_PARENTREF: + if (define->content == NULL) { + VALID_ERR(XML_RELAXNG_ERR_NODEFINE); + ret = -1; + } else { + ret = xmlRelaxNGValidateValue(ctxt, define->content); + } + break; + default: + TODO ret = -1; + } + return (ret); +} + +/** + * xmlRelaxNGValidateValueContent: + * @ctxt: a Relax-NG validation context + * @defines: the list of definitions to verify + * + * Validate the given definitions for the current value + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateValueContent(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr defines) +{ + int ret = 0; + + while (defines != NULL) { + ret = xmlRelaxNGValidateValue(ctxt, defines); + if (ret != 0) + break; + defines = defines->next; + } + return (ret); +} + +/** + * xmlRelaxNGAttributeMatch: + * @ctxt: a Relax-NG validation context + * @define: the definition to check + * @prop: the attribute + * + * Check if the attribute matches the definition nameClass + * + * Returns 1 if the attribute matches, 0 if no, or -1 in case of error + */ +static int +xmlRelaxNGAttributeMatch(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define, xmlAttrPtr prop) +{ + int ret; + + if (define->name != NULL) { + if (!xmlStrEqual(define->name, prop->name)) + return (0); + } + if (define->ns != NULL) { + if (define->ns[0] == 0) { + if (prop->ns != NULL) + return (0); + } else { + if ((prop->ns == NULL) || + (!xmlStrEqual(define->ns, prop->ns->href))) + return (0); + } + } + if (define->nameClass == NULL) + return (1); + define = define->nameClass; + if (define->type == XML_RELAXNG_EXCEPT) { + xmlRelaxNGDefinePtr list; + + list = define->content; + while (list != NULL) { + ret = xmlRelaxNGAttributeMatch(ctxt, list, prop); + if (ret == 1) + return (0); + if (ret < 0) + return (ret); + list = list->next; + } + } else if (define->type == XML_RELAXNG_CHOICE) { + xmlRelaxNGDefinePtr list; + + list = define->nameClass; + while (list != NULL) { + ret = xmlRelaxNGAttributeMatch(ctxt, list, prop); + if (ret == 1) + return (1); + if (ret < 0) + return (ret); + list = list->next; + } + return (0); + } else { + TODO} + return (1); +} + +/** + * xmlRelaxNGValidateAttribute: + * @ctxt: a Relax-NG validation context + * @define: the definition to verify + * + * Validate the given attribute definition for that node + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateAttribute(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define) +{ + int ret = 0, i; + xmlChar *value, *oldvalue; + xmlAttrPtr prop = NULL, tmp; + xmlNodePtr oldseq; + + if (ctxt->state->nbAttrLeft <= 0) + return (-1); + if (define->name != NULL) { + for (i = 0; i < ctxt->state->nbAttrs; i++) { + tmp = ctxt->state->attrs[i]; + if ((tmp != NULL) && (xmlStrEqual(define->name, tmp->name))) { + if ((((define->ns == NULL) || (define->ns[0] == 0)) && + (tmp->ns == NULL)) || + ((tmp->ns != NULL) && + (xmlStrEqual(define->ns, tmp->ns->href)))) { + prop = tmp; + break; + } + } + } + if (prop != NULL) { + value = xmlNodeListGetString(prop->doc, prop->children, 1); + oldvalue = ctxt->state->value; + oldseq = ctxt->state->seq; + ctxt->state->seq = (xmlNodePtr) prop; + ctxt->state->value = value; + ctxt->state->endvalue = NULL; + ret = xmlRelaxNGValidateValueContent(ctxt, define->content); + if (ctxt->state->value != NULL) + value = ctxt->state->value; + if (value != NULL) + xmlFree(value); + ctxt->state->value = oldvalue; + ctxt->state->seq = oldseq; + if (ret == 0) { + /* + * flag the attribute as processed + */ + ctxt->state->attrs[i] = NULL; + ctxt->state->nbAttrLeft--; + } + } else { + ret = -1; + } +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGValidateAttribute(%s): %d\n", + define->name, ret); +#endif + } else { + for (i = 0; i < ctxt->state->nbAttrs; i++) { + tmp = ctxt->state->attrs[i]; + if ((tmp != NULL) && + (xmlRelaxNGAttributeMatch(ctxt, define, tmp) == 1)) { + prop = tmp; + break; + } + } + if (prop != NULL) { + value = xmlNodeListGetString(prop->doc, prop->children, 1); + oldvalue = ctxt->state->value; + oldseq = ctxt->state->seq; + ctxt->state->seq = (xmlNodePtr) prop; + ctxt->state->value = value; + ret = xmlRelaxNGValidateValueContent(ctxt, define->content); + if (ctxt->state->value != NULL) + value = ctxt->state->value; + if (value != NULL) + xmlFree(value); + ctxt->state->value = oldvalue; + ctxt->state->seq = oldseq; + if (ret == 0) { + /* + * flag the attribute as processed + */ + ctxt->state->attrs[i] = NULL; + ctxt->state->nbAttrLeft--; + } + } else { + ret = -1; + } +#ifdef DEBUG + if (define->ns != NULL) { + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGValidateAttribute(nsName ns = %s): %d\n", + define->ns, ret); + } else { + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGValidateAttribute(anyName): %d\n", + ret); + } +#endif + } + + return (ret); +} + +/** + * xmlRelaxNGValidateAttributeList: + * @ctxt: a Relax-NG validation context + * @define: the list of definition to verify + * + * Validate the given node against the list of attribute definitions + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateAttributeList(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr defines) +{ + int ret = 0, res; + int needmore = 0; + xmlRelaxNGDefinePtr cur; + + cur = defines; + while (cur != NULL) { + if (cur->type == XML_RELAXNG_ATTRIBUTE) { + if (xmlRelaxNGValidateAttribute(ctxt, cur) != 0) + ret = -1; + } else + needmore = 1; + cur = cur->next; + } + if (!needmore) + return (ret); + cur = defines; + while (cur != NULL) { + if (cur->type != XML_RELAXNG_ATTRIBUTE) { + if ((ctxt->state != NULL) || (ctxt->states != NULL)) { + res = xmlRelaxNGValidateDefinition(ctxt, cur); + if (res < 0) + ret = -1; + } else { + VALID_ERR(XML_RELAXNG_ERR_NOSTATE); + return (-1); + } + if (res == -1) /* continues on -2 */ + break; + } + cur = cur->next; + } + + return (ret); +} + +/** + * xmlRelaxNGNodeMatchesList: + * @node: the node + * @list: a NULL terminated array of definitions + * + * Check if a node can be matched by one of the definitions + * + * Returns 1 if matches 0 otherwise + */ +static int +xmlRelaxNGNodeMatchesList(xmlNodePtr node, xmlRelaxNGDefinePtr * list) +{ + xmlRelaxNGDefinePtr cur; + int i = 0, tmp; + + if ((node == NULL) || (list == NULL)) + return (0); + + cur = list[i++]; + while (cur != NULL) { + if ((node->type == XML_ELEMENT_NODE) && + (cur->type == XML_RELAXNG_ELEMENT)) { + tmp = xmlRelaxNGElementMatch(NULL, cur, node); + if (tmp == 1) + return (1); + } else if (((node->type == XML_TEXT_NODE) || + (node->type == XML_CDATA_SECTION_NODE)) && + ((cur->type == XML_RELAXNG_DATATYPE) || + (cur->type == XML_RELAXNG_LIST) || + (cur->type == XML_RELAXNG_TEXT) || + (cur->type == XML_RELAXNG_VALUE))) { + return (1); + } + cur = list[i++]; + } + return (0); +} + +/** + * xmlRelaxNGValidateInterleave: + * @ctxt: a Relax-NG validation context + * @define: the definition to verify + * + * Validate an interleave definition for a node. + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateInterleave(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define) +{ + int ret = 0, i, nbgroups; + int errNr = ctxt->errNr; + int oldflags; + + xmlRelaxNGValidStatePtr oldstate; + xmlRelaxNGPartitionPtr partitions; + xmlRelaxNGInterleaveGroupPtr group = NULL; + xmlNodePtr cur, start, last = NULL, lastchg = NULL, lastelem; + xmlNodePtr *list = NULL, *lasts = NULL; + + if (define->data != NULL) { + partitions = (xmlRelaxNGPartitionPtr) define->data; + nbgroups = partitions->nbgroups; + } else { + VALID_ERR(XML_RELAXNG_ERR_INTERNODATA); + return (-1); + } + /* + * Optimizations for MIXED + */ + oldflags = ctxt->flags; + if (define->dflags & IS_MIXED) { + ctxt->flags |= FLAGS_MIXED_CONTENT; + if (nbgroups == 2) { + /* + * this is a pure <mixed> case + */ + if (ctxt->state != NULL) + ctxt->state->seq = xmlRelaxNGSkipIgnored(ctxt, + ctxt->state->seq); + if (partitions->groups[0]->rule->type == XML_RELAXNG_TEXT) + ret = xmlRelaxNGValidateDefinition(ctxt, + partitions->groups[1]-> + rule); + else + ret = xmlRelaxNGValidateDefinition(ctxt, + partitions->groups[0]-> + rule); + if (ret == 0) { + if (ctxt->state != NULL) + ctxt->state->seq = xmlRelaxNGSkipIgnored(ctxt, + ctxt->state-> + seq); + } + ctxt->flags = oldflags; + return (ret); + } + } + + /* + * Build arrays to store the first and last node of the chain + * pertaining to each group + */ + list = (xmlNodePtr *) xmlMalloc(nbgroups * sizeof(xmlNodePtr)); + if (list == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + return (-1); + } + memset(list, 0, nbgroups * sizeof(xmlNodePtr)); + lasts = (xmlNodePtr *) xmlMalloc(nbgroups * sizeof(xmlNodePtr)); + if (lasts == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + return (-1); + } + memset(lasts, 0, nbgroups * sizeof(xmlNodePtr)); + + /* + * Walk the sequence of children finding the right group and + * sorting them in sequences. + */ + cur = ctxt->state->seq; + cur = xmlRelaxNGSkipIgnored(ctxt, cur); + start = cur; + while (cur != NULL) { + ctxt->state->seq = cur; + if ((partitions->triage != NULL) && + (partitions->flags & IS_DETERMINIST)) { + void *tmp = NULL; + + if ((cur->type == XML_TEXT_NODE) || + (cur->type == XML_CDATA_SECTION_NODE)) { + tmp = xmlHashLookup2(partitions->triage, BAD_CAST "#text", + NULL); + } else if (cur->type == XML_ELEMENT_NODE) { + if (cur->ns != NULL) { + tmp = xmlHashLookup2(partitions->triage, cur->name, + cur->ns->href); + if (tmp == NULL) + tmp = xmlHashLookup2(partitions->triage, + BAD_CAST "#any", + cur->ns->href); + } else + tmp = + xmlHashLookup2(partitions->triage, cur->name, + NULL); + if (tmp == NULL) + tmp = + xmlHashLookup2(partitions->triage, BAD_CAST "#any", + NULL); + } + + if (tmp == NULL) { + i = nbgroups; + } else { + i = ((ptrdiff_t) tmp) - 1; + if (partitions->flags & IS_NEEDCHECK) { + group = partitions->groups[i]; + if (!xmlRelaxNGNodeMatchesList(cur, group->defs)) + i = nbgroups; + } + } + } else { + for (i = 0; i < nbgroups; i++) { + group = partitions->groups[i]; + if (group == NULL) + continue; + if (xmlRelaxNGNodeMatchesList(cur, group->defs)) + break; + } + } + /* + * We break as soon as an element not matched is found + */ + if (i >= nbgroups) { + break; + } + if (lasts[i] != NULL) { + lasts[i]->next = cur; + lasts[i] = cur; + } else { + list[i] = cur; + lasts[i] = cur; + } + if (cur->next != NULL) + lastchg = cur->next; + else + lastchg = cur; + cur = xmlRelaxNGSkipIgnored(ctxt, cur->next); + } + if (ret != 0) { + VALID_ERR(XML_RELAXNG_ERR_INTERSEQ); + ret = -1; + goto done; + } + lastelem = cur; + oldstate = ctxt->state; + for (i = 0; i < nbgroups; i++) { + ctxt->state = xmlRelaxNGCopyValidState(ctxt, oldstate); + if (ctxt->state == NULL) { + ret = -1; + break; + } + group = partitions->groups[i]; + if (lasts[i] != NULL) { + last = lasts[i]->next; + lasts[i]->next = NULL; + } + ctxt->state->seq = list[i]; + ret = xmlRelaxNGValidateDefinition(ctxt, group->rule); + if (ret != 0) + break; + if (ctxt->state != NULL) { + cur = ctxt->state->seq; + cur = xmlRelaxNGSkipIgnored(ctxt, cur); + xmlRelaxNGFreeValidState(ctxt, oldstate); + oldstate = ctxt->state; + ctxt->state = NULL; + if (cur != NULL + /* there's a nasty violation of context-free unambiguities, + since in open-name-class context, interleave in the + production shall finish without caring about anything + else that is OK to follow in that case -- it would + otherwise get marked as "extra content" and would + hence fail the validation, hence this perhaps + dirty attempt to rectify such a situation */ + && (define->parent->type != XML_RELAXNG_DEF + || !xmlStrEqual(define->parent->name, + (const xmlChar *) "open-name-class"))) { + VALID_ERR2(XML_RELAXNG_ERR_INTEREXTRA, cur->name); + ret = -1; + ctxt->state = oldstate; + goto done; + } + } else if (ctxt->states != NULL) { + int j; + int found = 0; + int best = -1; + int lowattr = -1; + + /* + * PBM: what happen if there is attributes checks in the interleaves + */ + + for (j = 0; j < ctxt->states->nbState; j++) { + cur = ctxt->states->tabState[j]->seq; + cur = xmlRelaxNGSkipIgnored(ctxt, cur); + if (cur == NULL) { + if (found == 0) { + lowattr = ctxt->states->tabState[j]->nbAttrLeft; + best = j; + } + found = 1; + if (ctxt->states->tabState[j]->nbAttrLeft <= lowattr) { + /* try to keep the latest one to mach old heuristic */ + lowattr = ctxt->states->tabState[j]->nbAttrLeft; + best = j; + } + if (lowattr == 0) + break; + } else if (found == 0) { + if (lowattr == -1) { + lowattr = ctxt->states->tabState[j]->nbAttrLeft; + best = j; + } else + if (ctxt->states->tabState[j]->nbAttrLeft <= lowattr) { + /* try to keep the latest one to mach old heuristic */ + lowattr = ctxt->states->tabState[j]->nbAttrLeft; + best = j; + } + } + } + /* + * BIG PBM: here we pick only one restarting point :-( + */ + if (ctxt->states->nbState > 0) { + xmlRelaxNGFreeValidState(ctxt, oldstate); + if (best != -1) { + oldstate = ctxt->states->tabState[best]; + ctxt->states->tabState[best] = NULL; + } else { + oldstate = + ctxt->states->tabState[ctxt->states->nbState - 1]; + ctxt->states->tabState[ctxt->states->nbState - 1] = NULL; + ctxt->states->nbState--; + } + } + for (j = 0; j < ctxt->states->nbState ; j++) { + xmlRelaxNGFreeValidState(ctxt, ctxt->states->tabState[j]); + } + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + if (found == 0) { + if (cur == NULL) { + VALID_ERR2(XML_RELAXNG_ERR_INTEREXTRA, + (const xmlChar *) "noname"); + } else { + VALID_ERR2(XML_RELAXNG_ERR_INTEREXTRA, cur->name); + } + ret = -1; + ctxt->state = oldstate; + goto done; + } + } else { + ret = -1; + break; + } + if (lasts[i] != NULL) { + lasts[i]->next = last; + } + } + if (ctxt->state != NULL) + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = oldstate; + ctxt->state->seq = lastelem; + if (ret != 0) { + VALID_ERR(XML_RELAXNG_ERR_INTERSEQ); + ret = -1; + goto done; + } + + done: + ctxt->flags = oldflags; + /* + * builds the next links chain from the prev one + */ + cur = lastchg; + while (cur != NULL) { + if ((cur == start) || (cur->prev == NULL)) + break; + cur->prev->next = cur; + cur = cur->prev; + } + if (ret == 0) { + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + } + + xmlFree(list); + xmlFree(lasts); + return (ret); +} + +/** + * xmlRelaxNGValidateDefinitionList: + * @ctxt: a Relax-NG validation context + * @define: the list of definition to verify + * + * Validate the given node content against the (list) of definitions + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateDefinitionList(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr defines) +{ + int ret = 0, res; + + + if (defines == NULL) { + VALID_ERR2(XML_RELAXNG_ERR_INTERNAL, + BAD_CAST "NULL definition list"); + return (-1); + } + while (defines != NULL) { + if ((ctxt->state != NULL) || (ctxt->states != NULL)) { + res = xmlRelaxNGValidateDefinition(ctxt, defines); + if (res < 0) + ret = -1; + } else { + VALID_ERR(XML_RELAXNG_ERR_NOSTATE); + return (-1); + } + if (res == -1) /* continues on -2 */ + break; + defines = defines->next; + } + + return (ret); +} + +/** + * xmlRelaxNGElementMatch: + * @ctxt: a Relax-NG validation context + * @define: the definition to check + * @elem: the element + * + * Check if the element matches the definition nameClass + * + * Returns 1 if the element matches, 0 if no, or -1 in case of error + */ +static int +xmlRelaxNGElementMatch(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define, xmlNodePtr elem) +{ + int ret = 0, oldflags = 0; + + if (define->name != NULL) { + if (!xmlStrEqual(elem->name, define->name)) { + VALID_ERR3(XML_RELAXNG_ERR_ELEMNAME, define->name, elem->name); + return (0); + } + } + if ((define->ns != NULL) && (define->ns[0] != 0)) { + if (elem->ns == NULL) { + VALID_ERR2(XML_RELAXNG_ERR_ELEMNONS, elem->name); + return (0); + } else if (!xmlStrEqual(elem->ns->href, define->ns)) { + VALID_ERR3(XML_RELAXNG_ERR_ELEMWRONGNS, + elem->name, define->ns); + return (0); + } + } else if ((elem->ns != NULL) && (define->ns != NULL) && + (define->name == NULL)) { + VALID_ERR2(XML_RELAXNG_ERR_ELEMEXTRANS, elem->name); + return (0); + } else if ((elem->ns != NULL) && (define->name != NULL)) { + VALID_ERR2(XML_RELAXNG_ERR_ELEMEXTRANS, define->name); + return (0); + } + + if (define->nameClass == NULL) + return (1); + + define = define->nameClass; + if (define->type == XML_RELAXNG_EXCEPT) { + xmlRelaxNGDefinePtr list; + + if (ctxt != NULL) { + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + } + + list = define->content; + while (list != NULL) { + ret = xmlRelaxNGElementMatch(ctxt, list, elem); + if (ret == 1) { + if (ctxt != NULL) + ctxt->flags = oldflags; + return (0); + } + if (ret < 0) { + if (ctxt != NULL) + ctxt->flags = oldflags; + return (ret); + } + list = list->next; + } + ret = 1; + if (ctxt != NULL) { + ctxt->flags = oldflags; + } + } else if (define->type == XML_RELAXNG_CHOICE) { + xmlRelaxNGDefinePtr list; + + if (ctxt != NULL) { + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + } + + list = define->nameClass; + while (list != NULL) { + ret = xmlRelaxNGElementMatch(ctxt, list, elem); + if (ret == 1) { + if (ctxt != NULL) + ctxt->flags = oldflags; + return (1); + } + if (ret < 0) { + if (ctxt != NULL) + ctxt->flags = oldflags; + return (ret); + } + list = list->next; + } + if (ctxt != NULL) { + if (ret != 0) { + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + } else { + if (ctxt->errNr > 0) + xmlRelaxNGPopErrors(ctxt, 0); + } + } + ret = 0; + if (ctxt != NULL) { + ctxt->flags = oldflags; + } + } else { + TODO ret = -1; + } + return (ret); +} + +/** + * xmlRelaxNGBestState: + * @ctxt: a Relax-NG validation context + * + * Find the "best" state in the ctxt->states list of states to report + * errors about. I.e. a state with no element left in the child list + * or the one with the less attributes left. + * This is called only if a validation error was detected + * + * Returns the index of the "best" state or -1 in case of error + */ +static int +xmlRelaxNGBestState(xmlRelaxNGValidCtxtPtr ctxt) +{ + xmlRelaxNGValidStatePtr state; + int i, tmp; + int best = -1; + int value = 1000000; + + if ((ctxt == NULL) || (ctxt->states == NULL) || + (ctxt->states->nbState <= 0)) + return (-1); + + for (i = 0; i < ctxt->states->nbState; i++) { + state = ctxt->states->tabState[i]; + if (state == NULL) + continue; + if (state->seq != NULL) { + if ((best == -1) || (value > 100000)) { + value = 100000; + best = i; + } + } else { + tmp = state->nbAttrLeft; + if ((best == -1) || (value > tmp)) { + value = tmp; + best = i; + } + } + } + return (best); +} + +/** + * xmlRelaxNGLogBestError: + * @ctxt: a Relax-NG validation context + * + * Find the "best" state in the ctxt->states list of states to report + * errors about and log it. + */ +static void +xmlRelaxNGLogBestError(xmlRelaxNGValidCtxtPtr ctxt) +{ + int best; + + if ((ctxt == NULL) || (ctxt->states == NULL) || + (ctxt->states->nbState <= 0)) + return; + + best = xmlRelaxNGBestState(ctxt); + if ((best >= 0) && (best < ctxt->states->nbState)) { + ctxt->state = ctxt->states->tabState[best]; + + xmlRelaxNGValidateElementEnd(ctxt, 1); + } +} + +/** + * xmlRelaxNGValidateElementEnd: + * @ctxt: a Relax-NG validation context + * @dolog: indicate that error logging should be done + * + * Validate the end of the element, implements check that + * there is nothing left not consumed in the element content + * or in the attribute list. + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateElementEnd(xmlRelaxNGValidCtxtPtr ctxt, int dolog) +{ + int i; + xmlRelaxNGValidStatePtr state; + + state = ctxt->state; + if (state->seq != NULL) { + state->seq = xmlRelaxNGSkipIgnored(ctxt, state->seq); + if (state->seq != NULL) { + if (dolog) { + VALID_ERR3(XML_RELAXNG_ERR_EXTRACONTENT, + state->node->name, state->seq->name); + } + return (-1); + } + } + for (i = 0; i < state->nbAttrs; i++) { + if (state->attrs[i] != NULL) { + if (dolog) { + VALID_ERR3(XML_RELAXNG_ERR_INVALIDATTR, + state->attrs[i]->name, state->node->name); + } + return (-1 - i); + } + } + return (0); +} + +/** + * xmlRelaxNGValidateState: + * @ctxt: a Relax-NG validation context + * @define: the definition to verify + * + * Validate the current state against the definition + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateState(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define) +{ + xmlNodePtr node; + int ret = 0, i, tmp, oldflags, errNr; + xmlRelaxNGValidStatePtr oldstate = NULL, state; + + if (define == NULL) { + VALID_ERR(XML_RELAXNG_ERR_NODEFINE); + return (-1); + } + + if (ctxt->state != NULL) { + node = ctxt->state->seq; + } else { + node = NULL; + } +#ifdef DEBUG + for (i = 0; i < ctxt->depth; i++) + xmlGenericError(xmlGenericErrorContext, " "); + xmlGenericError(xmlGenericErrorContext, + "Start validating %s ", xmlRelaxNGDefName(define)); + if (define->name != NULL) + xmlGenericError(xmlGenericErrorContext, "%s ", define->name); + if ((node != NULL) && (node->name != NULL)) + xmlGenericError(xmlGenericErrorContext, "on %s\n", node->name); + else + xmlGenericError(xmlGenericErrorContext, "\n"); +#endif + ctxt->depth++; + switch (define->type) { + case XML_RELAXNG_EMPTY: + ret = 0; + break; + case XML_RELAXNG_NOT_ALLOWED: + ret = -1; + break; + case XML_RELAXNG_TEXT: + while ((node != NULL) && + ((node->type == XML_TEXT_NODE) || + (node->type == XML_COMMENT_NODE) || + (node->type == XML_PI_NODE) || + (node->type == XML_CDATA_SECTION_NODE))) + node = node->next; + ctxt->state->seq = node; + break; + case XML_RELAXNG_ELEMENT: + errNr = ctxt->errNr; + node = xmlRelaxNGSkipIgnored(ctxt, node); + if (node == NULL) { + VALID_ERR2(XML_RELAXNG_ERR_NOELEM, define->name); + ret = -1; + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + break; + } + if (node->type != XML_ELEMENT_NODE) { + VALID_ERR(XML_RELAXNG_ERR_NOTELEM); + ret = -1; + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + break; + } + /* + * This node was already validated successfully against + * this definition. + */ + if (node->psvi == define) { + ctxt->state->seq = xmlRelaxNGSkipIgnored(ctxt, node->next); + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + if (ctxt->errNr != 0) { + while ((ctxt->err != NULL) && + (((ctxt->err->err == XML_RELAXNG_ERR_ELEMNAME) + && (xmlStrEqual(ctxt->err->arg2, node->name))) + || + ((ctxt->err->err == + XML_RELAXNG_ERR_ELEMEXTRANS) + && (xmlStrEqual(ctxt->err->arg1, node->name))) + || (ctxt->err->err == XML_RELAXNG_ERR_NOELEM) + || (ctxt->err->err == + XML_RELAXNG_ERR_NOTELEM))) + xmlRelaxNGValidErrorPop(ctxt); + } + break; + } + + ret = xmlRelaxNGElementMatch(ctxt, define, node); + if (ret <= 0) { + ret = -1; + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + break; + } + ret = 0; + if (ctxt->errNr != 0) { + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + while ((ctxt->err != NULL) && + (((ctxt->err->err == XML_RELAXNG_ERR_ELEMNAME) && + (xmlStrEqual(ctxt->err->arg2, node->name))) || + ((ctxt->err->err == XML_RELAXNG_ERR_ELEMEXTRANS) && + (xmlStrEqual(ctxt->err->arg1, node->name))) || + (ctxt->err->err == XML_RELAXNG_ERR_NOELEM) || + (ctxt->err->err == XML_RELAXNG_ERR_NOTELEM))) + xmlRelaxNGValidErrorPop(ctxt); + } + errNr = ctxt->errNr; + + oldflags = ctxt->flags; + if (ctxt->flags & FLAGS_MIXED_CONTENT) { + ctxt->flags -= FLAGS_MIXED_CONTENT; + } + state = xmlRelaxNGNewValidState(ctxt, node); + if (state == NULL) { + ret = -1; + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) + xmlRelaxNGDumpValidError(ctxt); + break; + } + + oldstate = ctxt->state; + ctxt->state = state; + if (define->attrs != NULL) { + tmp = xmlRelaxNGValidateAttributeList(ctxt, define->attrs); + if (tmp != 0) { + ret = -1; + VALID_ERR2(XML_RELAXNG_ERR_ATTRVALID, node->name); + } + } + if (define->contModel != NULL) { + xmlRelaxNGValidStatePtr nstate, tmpstate = ctxt->state; + xmlRelaxNGStatesPtr tmpstates = ctxt->states; + xmlNodePtr nseq; + + nstate = xmlRelaxNGNewValidState(ctxt, node); + ctxt->state = nstate; + ctxt->states = NULL; + + tmp = xmlRelaxNGValidateCompiledContent(ctxt, + define->contModel, + ctxt->state->seq); + nseq = ctxt->state->seq; + ctxt->state = tmpstate; + ctxt->states = tmpstates; + xmlRelaxNGFreeValidState(ctxt, nstate); + +#ifdef DEBUG_COMPILE + xmlGenericError(xmlGenericErrorContext, + "Validating content of '%s' : %d\n", + define->name, tmp); +#endif + if (tmp != 0) + ret = -1; + + if (ctxt->states != NULL) { + tmp = -1; + + for (i = 0; i < ctxt->states->nbState; i++) { + state = ctxt->states->tabState[i]; + ctxt->state = state; + ctxt->state->seq = nseq; + + if (xmlRelaxNGValidateElementEnd(ctxt, 0) == 0) { + tmp = 0; + break; + } + } + if (tmp != 0) { + /* + * validation error, log the message for the "best" one + */ + ctxt->flags |= FLAGS_IGNORABLE; + xmlRelaxNGLogBestError(ctxt); + } + for (i = 0; i < ctxt->states->nbState; i++) { + xmlRelaxNGFreeValidState(ctxt, + ctxt->states-> + tabState[i]); + } + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->flags = oldflags; + ctxt->states = NULL; + if ((ret == 0) && (tmp == -1)) + ret = -1; + } else { + state = ctxt->state; + if (ctxt->state != NULL) + ctxt->state->seq = nseq; + if (ret == 0) + ret = xmlRelaxNGValidateElementEnd(ctxt, 1); + xmlRelaxNGFreeValidState(ctxt, state); + } + } else { + if (define->content != NULL) { + tmp = xmlRelaxNGValidateDefinitionList(ctxt, + define-> + content); + if (tmp != 0) { + ret = -1; + if (ctxt->state == NULL) { + ctxt->state = oldstate; + VALID_ERR2(XML_RELAXNG_ERR_CONTENTVALID, + node->name); + ctxt->state = NULL; + } else { + VALID_ERR2(XML_RELAXNG_ERR_CONTENTVALID, + node->name); + } + + } + } + if (ctxt->states != NULL) { + tmp = -1; + + for (i = 0; i < ctxt->states->nbState; i++) { + state = ctxt->states->tabState[i]; + ctxt->state = state; + + if (xmlRelaxNGValidateElementEnd(ctxt, 0) == 0) { + tmp = 0; + break; + } + } + if (tmp != 0) { + /* + * validation error, log the message for the "best" one + */ + ctxt->flags |= FLAGS_IGNORABLE; + xmlRelaxNGLogBestError(ctxt); + } + for (i = 0; i < ctxt->states->nbState; i++) { + xmlRelaxNGFreeValidState(ctxt, + ctxt->states->tabState[i]); + ctxt->states->tabState[i] = NULL; + } + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->flags = oldflags; + ctxt->states = NULL; + if ((ret == 0) && (tmp == -1)) + ret = -1; + } else { + state = ctxt->state; + if (ret == 0) + ret = xmlRelaxNGValidateElementEnd(ctxt, 1); + xmlRelaxNGFreeValidState(ctxt, state); + } + } + if (ret == 0) { + node->psvi = define; + } + ctxt->flags = oldflags; + ctxt->state = oldstate; + if (oldstate != NULL) + oldstate->seq = xmlRelaxNGSkipIgnored(ctxt, node->next); + if (ret != 0) { + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) { + xmlRelaxNGDumpValidError(ctxt); + ret = 0; +#if 0 + } else { + ret = -2; +#endif + } + } else { + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + } + +#ifdef DEBUG + xmlGenericError(xmlGenericErrorContext, + "xmlRelaxNGValidateDefinition(): validated %s : %d", + node->name, ret); + if (oldstate == NULL) + xmlGenericError(xmlGenericErrorContext, ": no state\n"); + else if (oldstate->seq == NULL) + xmlGenericError(xmlGenericErrorContext, ": done\n"); + else if (oldstate->seq->type == XML_ELEMENT_NODE) + xmlGenericError(xmlGenericErrorContext, ": next elem %s\n", + oldstate->seq->name); + else + xmlGenericError(xmlGenericErrorContext, ": next %s %d\n", + oldstate->seq->name, oldstate->seq->type); +#endif + break; + case XML_RELAXNG_OPTIONAL:{ + errNr = ctxt->errNr; + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + oldstate = xmlRelaxNGCopyValidState(ctxt, ctxt->state); + ret = + xmlRelaxNGValidateDefinitionList(ctxt, + define->content); + if (ret != 0) { + if (ctxt->state != NULL) + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = oldstate; + ctxt->flags = oldflags; + ret = 0; + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + break; + } + if (ctxt->states != NULL) { + xmlRelaxNGAddStates(ctxt, ctxt->states, oldstate); + } else { + ctxt->states = xmlRelaxNGNewStates(ctxt, 1); + if (ctxt->states == NULL) { + xmlRelaxNGFreeValidState(ctxt, oldstate); + ctxt->flags = oldflags; + ret = -1; + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + break; + } + xmlRelaxNGAddStates(ctxt, ctxt->states, oldstate); + xmlRelaxNGAddStates(ctxt, ctxt->states, ctxt->state); + ctxt->state = NULL; + } + ctxt->flags = oldflags; + ret = 0; + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + break; + } + case XML_RELAXNG_ONEORMORE: + errNr = ctxt->errNr; + ret = xmlRelaxNGValidateDefinitionList(ctxt, define->content); + if (ret != 0) { + break; + } + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + /* Falls through. */ + case XML_RELAXNG_ZEROORMORE:{ + int progress; + xmlRelaxNGStatesPtr states = NULL, res = NULL; + int base, j; + + errNr = ctxt->errNr; + res = xmlRelaxNGNewStates(ctxt, 1); + if (res == NULL) { + ret = -1; + break; + } + /* + * All the input states are also exit states + */ + if (ctxt->state != NULL) { + xmlRelaxNGAddStates(ctxt, res, + xmlRelaxNGCopyValidState(ctxt, + ctxt-> + state)); + } else { + for (j = 0; j < ctxt->states->nbState; j++) { + xmlRelaxNGAddStates(ctxt, res, + xmlRelaxNGCopyValidState(ctxt, + ctxt->states->tabState[j])); + } + } + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + do { + progress = 0; + base = res->nbState; + + if (ctxt->states != NULL) { + states = ctxt->states; + for (i = 0; i < states->nbState; i++) { + ctxt->state = states->tabState[i]; + ctxt->states = NULL; + ret = xmlRelaxNGValidateDefinitionList(ctxt, + define-> + content); + if (ret == 0) { + if (ctxt->state != NULL) { + tmp = xmlRelaxNGAddStates(ctxt, res, + ctxt->state); + ctxt->state = NULL; + if (tmp == 1) + progress = 1; + } else if (ctxt->states != NULL) { + for (j = 0; j < ctxt->states->nbState; + j++) { + tmp = + xmlRelaxNGAddStates(ctxt, res, + ctxt->states->tabState[j]); + if (tmp == 1) + progress = 1; + } + xmlRelaxNGFreeStates(ctxt, + ctxt->states); + ctxt->states = NULL; + } + } else { + if (ctxt->state != NULL) { + xmlRelaxNGFreeValidState(ctxt, + ctxt->state); + ctxt->state = NULL; + } + } + } + } else { + ret = xmlRelaxNGValidateDefinitionList(ctxt, + define-> + content); + if (ret != 0) { + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; + } else { + base = res->nbState; + if (ctxt->state != NULL) { + tmp = xmlRelaxNGAddStates(ctxt, res, + ctxt->state); + ctxt->state = NULL; + if (tmp == 1) + progress = 1; + } else if (ctxt->states != NULL) { + for (j = 0; j < ctxt->states->nbState; j++) { + tmp = xmlRelaxNGAddStates(ctxt, res, + ctxt->states->tabState[j]); + if (tmp == 1) + progress = 1; + } + if (states == NULL) { + states = ctxt->states; + } else { + xmlRelaxNGFreeStates(ctxt, + ctxt->states); + } + ctxt->states = NULL; + } + } + } + if (progress) { + /* + * Collect all the new nodes added at that step + * and make them the new node set + */ + if (res->nbState - base == 1) { + ctxt->state = xmlRelaxNGCopyValidState(ctxt, + res-> + tabState + [base]); + } else { + if (states == NULL) { + xmlRelaxNGNewStates(ctxt, + res->nbState - base); + states = ctxt->states; + if (states == NULL) { + progress = 0; + break; + } + } + states->nbState = 0; + for (i = base; i < res->nbState; i++) + xmlRelaxNGAddStates(ctxt, states, + xmlRelaxNGCopyValidState + (ctxt, res->tabState[i])); + ctxt->states = states; + } + } + } while (progress == 1); + if (states != NULL) { + xmlRelaxNGFreeStates(ctxt, states); + } + ctxt->states = res; + ctxt->flags = oldflags; +#if 0 + /* + * errors may have to be propagated back... + */ + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); +#endif + ret = 0; + break; + } + case XML_RELAXNG_CHOICE:{ + xmlRelaxNGDefinePtr list = NULL; + xmlRelaxNGStatesPtr states = NULL; + + node = xmlRelaxNGSkipIgnored(ctxt, node); + + errNr = ctxt->errNr; + if ((define->dflags & IS_TRIABLE) && (define->data != NULL) && + (node != NULL)) { + /* + * node == NULL can't be optimized since IS_TRIABLE + * doesn't account for choice which may lead to + * only attributes. + */ + xmlHashTablePtr triage = + (xmlHashTablePtr) define->data; + + /* + * Something we can optimize cleanly there is only one + * possible branch out ! + */ + if ((node->type == XML_TEXT_NODE) || + (node->type == XML_CDATA_SECTION_NODE)) { + list = + xmlHashLookup2(triage, BAD_CAST "#text", NULL); + } else if (node->type == XML_ELEMENT_NODE) { + if (node->ns != NULL) { + list = xmlHashLookup2(triage, node->name, + node->ns->href); + if (list == NULL) + list = + xmlHashLookup2(triage, BAD_CAST "#any", + node->ns->href); + } else + list = + xmlHashLookup2(triage, node->name, NULL); + if (list == NULL) + list = + xmlHashLookup2(triage, BAD_CAST "#any", + NULL); + } + if (list == NULL) { + ret = -1; + VALID_ERR2(XML_RELAXNG_ERR_ELEMWRONG, node->name); + break; + } + ret = xmlRelaxNGValidateDefinition(ctxt, list); + if (ret == 0) { + } + break; + } + + list = define->content; + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + + while (list != NULL) { + oldstate = xmlRelaxNGCopyValidState(ctxt, ctxt->state); + ret = xmlRelaxNGValidateDefinition(ctxt, list); + if (ret == 0) { + if (states == NULL) { + states = xmlRelaxNGNewStates(ctxt, 1); + } + if (ctxt->state != NULL) { + xmlRelaxNGAddStates(ctxt, states, ctxt->state); + } else if (ctxt->states != NULL) { + for (i = 0; i < ctxt->states->nbState; i++) { + xmlRelaxNGAddStates(ctxt, states, + ctxt->states-> + tabState[i]); + } + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + } + } else { + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + } + ctxt->state = oldstate; + list = list->next; + } + if (states != NULL) { + xmlRelaxNGFreeValidState(ctxt, oldstate); + ctxt->states = states; + ctxt->state = NULL; + ret = 0; + } else { + ctxt->states = NULL; + } + ctxt->flags = oldflags; + if (ret != 0) { + if ((ctxt->flags & FLAGS_IGNORABLE) == 0) { + xmlRelaxNGDumpValidError(ctxt); + } + } else { + if (ctxt->errNr > errNr) + xmlRelaxNGPopErrors(ctxt, errNr); + } + break; + } + case XML_RELAXNG_DEF: + case XML_RELAXNG_GROUP: + ret = xmlRelaxNGValidateDefinitionList(ctxt, define->content); + break; + case XML_RELAXNG_INTERLEAVE: + ret = xmlRelaxNGValidateInterleave(ctxt, define); + break; + case XML_RELAXNG_ATTRIBUTE: + ret = xmlRelaxNGValidateAttribute(ctxt, define); + break; + case XML_RELAXNG_START: + case XML_RELAXNG_NOOP: + case XML_RELAXNG_REF: + case XML_RELAXNG_EXTERNALREF: + case XML_RELAXNG_PARENTREF: + ret = xmlRelaxNGValidateDefinition(ctxt, define->content); + break; + case XML_RELAXNG_DATATYPE:{ + xmlNodePtr child; + xmlChar *content = NULL; + + child = node; + while (child != NULL) { + if (child->type == XML_ELEMENT_NODE) { + VALID_ERR2(XML_RELAXNG_ERR_DATAELEM, + node->parent->name); + ret = -1; + break; + } else if ((child->type == XML_TEXT_NODE) || + (child->type == XML_CDATA_SECTION_NODE)) { + content = xmlStrcat(content, child->content); + } + /* TODO: handle entities ... */ + child = child->next; + } + if (ret == -1) { + if (content != NULL) + xmlFree(content); + break; + } + if (content == NULL) { + content = xmlStrdup(BAD_CAST ""); + if (content == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + ret = -1; + break; + } + } + ret = xmlRelaxNGValidateDatatype(ctxt, content, define, + ctxt->state->seq); + if (ret == -1) { + VALID_ERR2(XML_RELAXNG_ERR_DATATYPE, define->name); + } else if (ret == 0) { + ctxt->state->seq = NULL; + } + if (content != NULL) + xmlFree(content); + break; + } + case XML_RELAXNG_VALUE:{ + xmlChar *content = NULL; + xmlChar *oldvalue; + xmlNodePtr child; + + child = node; + while (child != NULL) { + if (child->type == XML_ELEMENT_NODE) { + VALID_ERR2(XML_RELAXNG_ERR_VALELEM, + node->parent->name); + ret = -1; + break; + } else if ((child->type == XML_TEXT_NODE) || + (child->type == XML_CDATA_SECTION_NODE)) { + content = xmlStrcat(content, child->content); + } + /* TODO: handle entities ... */ + child = child->next; + } + if (ret == -1) { + if (content != NULL) + xmlFree(content); + break; + } + if (content == NULL) { + content = xmlStrdup(BAD_CAST ""); + if (content == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + ret = -1; + break; + } + } + oldvalue = ctxt->state->value; + ctxt->state->value = content; + ret = xmlRelaxNGValidateValue(ctxt, define); + ctxt->state->value = oldvalue; + if (ret == -1) { + VALID_ERR2(XML_RELAXNG_ERR_VALUE, define->name); + } else if (ret == 0) { + ctxt->state->seq = NULL; + } + if (content != NULL) + xmlFree(content); + break; + } + case XML_RELAXNG_LIST:{ + xmlChar *content; + xmlNodePtr child; + xmlChar *oldvalue, *oldendvalue; + int len; + + /* + * Make sure it's only text nodes + */ + + content = NULL; + child = node; + while (child != NULL) { + if (child->type == XML_ELEMENT_NODE) { + VALID_ERR2(XML_RELAXNG_ERR_LISTELEM, + node->parent->name); + ret = -1; + break; + } else if ((child->type == XML_TEXT_NODE) || + (child->type == XML_CDATA_SECTION_NODE)) { + content = xmlStrcat(content, child->content); + } + /* TODO: handle entities ... */ + child = child->next; + } + if (ret == -1) { + if (content != NULL) + xmlFree(content); + break; + } + if (content == NULL) { + content = xmlStrdup(BAD_CAST ""); + if (content == NULL) { + xmlRngVErrMemory(ctxt, "validating\n"); + ret = -1; + break; + } + } + len = xmlStrlen(content); + oldvalue = ctxt->state->value; + oldendvalue = ctxt->state->endvalue; + ctxt->state->value = content; + ctxt->state->endvalue = content + len; + ret = xmlRelaxNGValidateValue(ctxt, define); + ctxt->state->value = oldvalue; + ctxt->state->endvalue = oldendvalue; + if (ret == -1) { + VALID_ERR(XML_RELAXNG_ERR_LIST); + } else if ((ret == 0) && (node != NULL)) { + ctxt->state->seq = node->next; + } + if (content != NULL) + xmlFree(content); + break; + } + case XML_RELAXNG_EXCEPT: + case XML_RELAXNG_PARAM: + TODO ret = -1; + break; + } + ctxt->depth--; +#ifdef DEBUG + for (i = 0; i < ctxt->depth; i++) + xmlGenericError(xmlGenericErrorContext, " "); + xmlGenericError(xmlGenericErrorContext, + "Validating %s ", xmlRelaxNGDefName(define)); + if (define->name != NULL) + xmlGenericError(xmlGenericErrorContext, "%s ", define->name); + if (ret == 0) + xmlGenericError(xmlGenericErrorContext, "succeeded\n"); + else + xmlGenericError(xmlGenericErrorContext, "failed\n"); +#endif + return (ret); +} + +/** + * xmlRelaxNGValidateDefinition: + * @ctxt: a Relax-NG validation context + * @define: the definition to verify + * + * Validate the current node lists against the definition + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateDefinition(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGDefinePtr define) +{ + xmlRelaxNGStatesPtr states, res; + int i, j, k, ret, oldflags; + + /* + * We should NOT have both ctxt->state and ctxt->states + */ + if ((ctxt->state != NULL) && (ctxt->states != NULL)) { + TODO xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; + } + + if ((ctxt->states == NULL) || (ctxt->states->nbState == 1)) { + if (ctxt->states != NULL) { + ctxt->state = ctxt->states->tabState[0]; + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + } + ret = xmlRelaxNGValidateState(ctxt, define); + if ((ctxt->state != NULL) && (ctxt->states != NULL)) { + TODO xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; + } + if ((ctxt->states != NULL) && (ctxt->states->nbState == 1)) { + ctxt->state = ctxt->states->tabState[0]; + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + } + return (ret); + } + + states = ctxt->states; + ctxt->states = NULL; + res = NULL; + j = 0; + oldflags = ctxt->flags; + ctxt->flags |= FLAGS_IGNORABLE; + for (i = 0; i < states->nbState; i++) { + ctxt->state = states->tabState[i]; + ctxt->states = NULL; + ret = xmlRelaxNGValidateState(ctxt, define); + /* + * We should NOT have both ctxt->state and ctxt->states + */ + if ((ctxt->state != NULL) && (ctxt->states != NULL)) { + TODO xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; + } + if (ret == 0) { + if (ctxt->states == NULL) { + if (res != NULL) { + /* add the state to the container */ + xmlRelaxNGAddStates(ctxt, res, ctxt->state); + ctxt->state = NULL; + } else { + /* add the state directly in states */ + states->tabState[j++] = ctxt->state; + ctxt->state = NULL; + } + } else { + if (res == NULL) { + /* make it the new container and copy other results */ + res = ctxt->states; + ctxt->states = NULL; + for (k = 0; k < j; k++) + xmlRelaxNGAddStates(ctxt, res, + states->tabState[k]); + } else { + /* add all the new results to res and reff the container */ + for (k = 0; k < ctxt->states->nbState; k++) + xmlRelaxNGAddStates(ctxt, res, + ctxt->states->tabState[k]); + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + } + } + } else { + if (ctxt->state != NULL) { + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; + } else if (ctxt->states != NULL) { + for (k = 0; k < ctxt->states->nbState; k++) + xmlRelaxNGFreeValidState(ctxt, + ctxt->states->tabState[k]); + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + } + } + } + ctxt->flags = oldflags; + if (res != NULL) { + xmlRelaxNGFreeStates(ctxt, states); + ctxt->states = res; + ret = 0; + } else if (j > 1) { + states->nbState = j; + ctxt->states = states; + ret = 0; + } else if (j == 1) { + ctxt->state = states->tabState[0]; + xmlRelaxNGFreeStates(ctxt, states); + ret = 0; + } else { + ret = -1; + xmlRelaxNGFreeStates(ctxt, states); + if (ctxt->states != NULL) { + xmlRelaxNGFreeStates(ctxt, ctxt->states); + ctxt->states = NULL; + } + } + if ((ctxt->state != NULL) && (ctxt->states != NULL)) { + TODO xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; + } + return (ret); +} + +/** + * xmlRelaxNGValidateDocument: + * @ctxt: a Relax-NG validation context + * @doc: the document + * + * Validate the given document + * + * Returns 0 if the validation succeeded or an error code. + */ +static int +xmlRelaxNGValidateDocument(xmlRelaxNGValidCtxtPtr ctxt, xmlDocPtr doc) +{ + int ret; + xmlRelaxNGPtr schema; + xmlRelaxNGGrammarPtr grammar; + xmlRelaxNGValidStatePtr state; + xmlNodePtr node; + + if ((ctxt == NULL) || (ctxt->schema == NULL) || (doc == NULL)) + return (-1); + + ctxt->errNo = XML_RELAXNG_OK; + schema = ctxt->schema; + grammar = schema->topgrammar; + if (grammar == NULL) { + VALID_ERR(XML_RELAXNG_ERR_NOGRAMMAR); + return (-1); + } + state = xmlRelaxNGNewValidState(ctxt, NULL); + ctxt->state = state; + ret = xmlRelaxNGValidateDefinition(ctxt, grammar->start); + if ((ctxt->state != NULL) && (state->seq != NULL)) { + state = ctxt->state; + node = state->seq; + node = xmlRelaxNGSkipIgnored(ctxt, node); + if (node != NULL) { + if (ret != -1) { + VALID_ERR(XML_RELAXNG_ERR_EXTRADATA); + ret = -1; + } + } + } else if (ctxt->states != NULL) { + int i; + int tmp = -1; + + for (i = 0; i < ctxt->states->nbState; i++) { + state = ctxt->states->tabState[i]; + node = state->seq; + node = xmlRelaxNGSkipIgnored(ctxt, node); + if (node == NULL) + tmp = 0; + xmlRelaxNGFreeValidState(ctxt, state); + } + if (tmp == -1) { + if (ret != -1) { + VALID_ERR(XML_RELAXNG_ERR_EXTRADATA); + ret = -1; + } + } + } + if (ctxt->state != NULL) { + xmlRelaxNGFreeValidState(ctxt, ctxt->state); + ctxt->state = NULL; + } + if (ret != 0) + xmlRelaxNGDumpValidError(ctxt); +#ifdef DEBUG + else if (ctxt->errNr != 0) { + ctxt->error(ctxt->userData, + "%d Extra error messages left on stack !\n", + ctxt->errNr); + xmlRelaxNGDumpValidError(ctxt); + } +#endif +#ifdef LIBXML_VALID_ENABLED + if (ctxt->idref == 1) { + xmlValidCtxt vctxt; + + memset(&vctxt, 0, sizeof(xmlValidCtxt)); + vctxt.valid = 1; + vctxt.error = ctxt->error; + vctxt.warning = ctxt->warning; + vctxt.userData = ctxt->userData; + + if (xmlValidateDocumentFinal(&vctxt, doc) != 1) + ret = -1; + } +#endif /* LIBXML_VALID_ENABLED */ + if ((ret == 0) && (ctxt->errNo != XML_RELAXNG_OK)) + ret = -1; + + return (ret); +} + +/** + * xmlRelaxNGCleanPSVI: + * @node: an input element or document + * + * Call this routine to speed up XPath computation on static documents. + * This stamps all the element nodes with the document order + * Like for line information, the order is kept in the element->content + * field, the value stored is actually - the node number (starting at -1) + * to be able to differentiate from line numbers. + * + * Returns the number of elements found in the document or -1 in case + * of error. + */ +static void +xmlRelaxNGCleanPSVI(xmlNodePtr node) { + xmlNodePtr cur; + + if ((node == NULL) || + ((node->type != XML_ELEMENT_NODE) && + (node->type != XML_DOCUMENT_NODE) && + (node->type != XML_HTML_DOCUMENT_NODE))) + return; + if (node->type == XML_ELEMENT_NODE) + node->psvi = NULL; + + cur = node->children; + while (cur != NULL) { + if (cur->type == XML_ELEMENT_NODE) { + cur->psvi = NULL; + if (cur->children != NULL) { + cur = cur->children; + continue; + } + } + if (cur->next != NULL) { + cur = cur->next; + continue; + } + do { + cur = cur->parent; + if (cur == NULL) + break; + if (cur == node) { + cur = NULL; + break; + } + if (cur->next != NULL) { + cur = cur->next; + break; + } + } while (cur != NULL); + } + return; +} +/************************************************************************ + * * + * Validation interfaces * + * * + ************************************************************************/ + +/** + * xmlRelaxNGNewValidCtxt: + * @schema: a precompiled XML RelaxNGs + * + * Create an XML RelaxNGs validation context based on the given schema + * + * Returns the validation context or NULL in case of error + */ +xmlRelaxNGValidCtxtPtr +xmlRelaxNGNewValidCtxt(xmlRelaxNGPtr schema) +{ + xmlRelaxNGValidCtxtPtr ret; + + ret = (xmlRelaxNGValidCtxtPtr) xmlMalloc(sizeof(xmlRelaxNGValidCtxt)); + if (ret == NULL) { + xmlRngVErrMemory(NULL, "building context\n"); + return (NULL); + } + memset(ret, 0, sizeof(xmlRelaxNGValidCtxt)); + ret->schema = schema; + ret->error = xmlGenericError; + ret->userData = xmlGenericErrorContext; + ret->errNr = 0; + ret->errMax = 0; + ret->err = NULL; + ret->errTab = NULL; + if (schema != NULL) + ret->idref = schema->idref; + ret->states = NULL; + ret->freeState = NULL; + ret->freeStates = NULL; + ret->errNo = XML_RELAXNG_OK; + return (ret); +} + +/** + * xmlRelaxNGFreeValidCtxt: + * @ctxt: the schema validation context + * + * Free the resources associated to the schema validation context + */ +void +xmlRelaxNGFreeValidCtxt(xmlRelaxNGValidCtxtPtr ctxt) +{ + int k; + + if (ctxt == NULL) + return; + if (ctxt->states != NULL) + xmlRelaxNGFreeStates(NULL, ctxt->states); + if (ctxt->freeState != NULL) { + for (k = 0; k < ctxt->freeState->nbState; k++) { + xmlRelaxNGFreeValidState(NULL, ctxt->freeState->tabState[k]); + } + xmlRelaxNGFreeStates(NULL, ctxt->freeState); + } + if (ctxt->freeStates != NULL) { + for (k = 0; k < ctxt->freeStatesNr; k++) { + xmlRelaxNGFreeStates(NULL, ctxt->freeStates[k]); + } + xmlFree(ctxt->freeStates); + } + if (ctxt->errTab != NULL) + xmlFree(ctxt->errTab); + if (ctxt->elemTab != NULL) { + xmlRegExecCtxtPtr exec; + + exec = xmlRelaxNGElemPop(ctxt); + while (exec != NULL) { + xmlRegFreeExecCtxt(exec); + exec = xmlRelaxNGElemPop(ctxt); + } + xmlFree(ctxt->elemTab); + } + xmlFree(ctxt); +} + +/** + * xmlRelaxNGSetValidErrors: + * @ctxt: a Relax-NG validation context + * @err: the error function + * @warn: the warning function + * @ctx: the functions context + * + * Set the error and warning callback informations + */ +void +xmlRelaxNGSetValidErrors(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidityErrorFunc err, + xmlRelaxNGValidityWarningFunc warn, void *ctx) +{ + if (ctxt == NULL) + return; + ctxt->error = err; + ctxt->warning = warn; + ctxt->userData = ctx; + ctxt->serror = NULL; +} + +/** + * xmlRelaxNGSetValidStructuredErrors: + * @ctxt: a Relax-NG validation context + * @serror: the structured error function + * @ctx: the functions context + * + * Set the structured error callback + */ +void +xmlRelaxNGSetValidStructuredErrors(xmlRelaxNGValidCtxtPtr ctxt, + xmlStructuredErrorFunc serror, void *ctx) +{ + if (ctxt == NULL) + return; + ctxt->serror = serror; + ctxt->error = NULL; + ctxt->warning = NULL; + ctxt->userData = ctx; +} + +/** + * xmlRelaxNGGetValidErrors: + * @ctxt: a Relax-NG validation context + * @err: the error function result + * @warn: the warning function result + * @ctx: the functions context result + * + * Get the error and warning callback informations + * + * Returns -1 in case of error and 0 otherwise + */ +int +xmlRelaxNGGetValidErrors(xmlRelaxNGValidCtxtPtr ctxt, + xmlRelaxNGValidityErrorFunc * err, + xmlRelaxNGValidityWarningFunc * warn, void **ctx) +{ + if (ctxt == NULL) + return (-1); + if (err != NULL) + *err = ctxt->error; + if (warn != NULL) + *warn = ctxt->warning; + if (ctx != NULL) + *ctx = ctxt->userData; + return (0); +} + +/** + * xmlRelaxNGValidateDoc: + * @ctxt: a Relax-NG validation context + * @doc: a parsed document tree + * + * Validate a document tree in memory. + * + * Returns 0 if the document is valid, a positive error code + * number otherwise and -1 in case of internal or API error. + */ +int +xmlRelaxNGValidateDoc(xmlRelaxNGValidCtxtPtr ctxt, xmlDocPtr doc) +{ + int ret; + + if ((ctxt == NULL) || (doc == NULL)) + return (-1); + + ctxt->doc = doc; + + ret = xmlRelaxNGValidateDocument(ctxt, doc); + /* + * Remove all left PSVI + */ + xmlRelaxNGCleanPSVI((xmlNodePtr) doc); + + /* + * TODO: build error codes + */ + if (ret == -1) + return (1); + return (ret); +} + +#define bottom_relaxng +#include "elfgcchack.h" +#endif /* LIBXML_SCHEMAS_ENABLED */ |