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authorWojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>2021-04-30 00:33:56 +0200
committerWojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>2021-04-30 00:33:56 +0200
commitaa4d426b4d3527d7e166df1a05058c9a4a0f6683 (patch)
tree4ff17ce8b89a2321b9d0ed4bcfc37c447bcb6820 /iniparser-4.1/src/iniparser.h
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+
+/*-------------------------------------------------------------------------*/
+/**
+ @file iniparser.h
+ @author N. Devillard
+ @brief Parser for ini files.
+*/
+/*--------------------------------------------------------------------------*/
+
+#ifndef _INIPARSER_H_
+#define _INIPARSER_H_
+
+/*---------------------------------------------------------------------------
+ Includes
+ ---------------------------------------------------------------------------*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * The following #include is necessary on many Unixes but not Linux.
+ * It is not needed for Windows platforms.
+ * Uncomment it if needed.
+ */
+/* #include <unistd.h> */
+
+#include "dictionary.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Configure a function to receive the error messages.
+ @param errback Function to call.
+
+ By default, the error will be printed on stderr. If a null pointer is passed
+ as errback the error callback will be switched back to default.
+ */
+/*--------------------------------------------------------------------------*/
+
+void iniparser_set_error_callback(int (*errback)(const char *, ...));
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Configure whether to parse multiline values.
+ @param process_multiline Boolean (0 or 1) value.
+
+ By default, multiline values will be parsed. If someone puts into their .ini
+ file 2 lines like those:
+
+ outputdir=c:\temp\
+ save_subject=1
+
+ then we're screwed. All will be treated as if it was on one line.
+ This function makes it possible to disable this linebreak feature.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_set_process_multiline(int process);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Configure a function to read file.
+ @param impl Function to call.
+
+ By default, fgetc() will be used for reading files. If a null pointer is passed
+ as impl the reading callback will be switched back to default.
+ */
+/*--------------------------------------------------------------------------*/
+ void iniparser_set_fgetc_impl(int (*impl)(FILE*));
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get number of sections in a dictionary
+ @param d Dictionary to examine
+ @return int Number of sections found in dictionary
+
+ This function returns the number of sections found in a dictionary.
+ The test to recognize sections is done on the string stored in the
+ dictionary: a section name is given as "section" whereas a key is
+ stored as "section:key", thus the test looks for entries that do not
+ contain a colon.
+
+ This clearly fails in the case a section name contains a colon, but
+ this should simply be avoided.
+
+ This function returns -1 in case of error.
+ */
+/*--------------------------------------------------------------------------*/
+
+int iniparser_getnsec(const dictionary * d);
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get name for section n in a dictionary.
+ @param d Dictionary to examine
+ @param n Section number (from 0 to nsec-1).
+ @return Pointer to char string
+
+ This function locates the n-th section in a dictionary and returns
+ its name as a pointer to a string statically allocated inside the
+ dictionary. Do not free or modify the returned string!
+
+ This function returns NULL in case of error.
+ */
+/*--------------------------------------------------------------------------*/
+
+const char * iniparser_getsecname(const dictionary * d, int n);
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Save a dictionary to a loadable ini file
+ @param d Dictionary to dump
+ @param f Opened file pointer to dump to
+ @return void
+
+ This function dumps a given dictionary into a loadable ini file.
+ It is Ok to specify @c stderr or @c stdout as output files.
+ */
+/*--------------------------------------------------------------------------*/
+
+void iniparser_dump_ini(const dictionary * d, FILE * f);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Save a dictionary section to a loadable ini file
+ @param d Dictionary to dump
+ @param s Section name of dictionary to dump
+ @param f Opened file pointer to dump to
+ @return void
+
+ This function dumps a given section of a given dictionary into a loadable ini
+ file. It is Ok to specify @c stderr or @c stdout as output files.
+ */
+/*--------------------------------------------------------------------------*/
+
+void iniparser_dumpsection_ini(const dictionary * d, const char * s, FILE * f);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Dump a dictionary to an opened file pointer.
+ @param d Dictionary to dump.
+ @param f Opened file pointer to dump to.
+ @return void
+
+ This function prints out the contents of a dictionary, one element by
+ line, onto the provided file pointer. It is OK to specify @c stderr
+ or @c stdout as output files. This function is meant for debugging
+ purposes mostly.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_dump(const dictionary * d, FILE * f);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the number of keys in a section of a dictionary.
+ @param d Dictionary to examine
+ @param s Section name of dictionary to examine
+ @return Number of keys in section
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getsecnkeys(const dictionary * d, const char * s);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the number of keys in a section of a dictionary.
+ @param d Dictionary to examine
+ @param s Section name of dictionary to examine
+ @param keys Already allocated array to store the keys in
+ @return The pointer passed as `keys` argument or NULL in case of error
+
+ This function queries a dictionary and finds all keys in a given section.
+ The keys argument should be an array of pointers which size has been
+ determined by calling `iniparser_getsecnkeys` function prior to this one.
+
+ Each pointer in the returned char pointer-to-pointer is pointing to
+ a string allocated in the dictionary; do not free or modify them.
+ */
+/*--------------------------------------------------------------------------*/
+const char ** iniparser_getseckeys(const dictionary * d, const char * s, const char ** keys);
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param def Default value to return if key not found.
+ @return pointer to statically allocated character string
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the pointer passed as 'def' is returned.
+ The returned char pointer is pointing to a string allocated in
+ the dictionary, do not free or modify it.
+ */
+/*--------------------------------------------------------------------------*/
+const char * iniparser_getstring(const dictionary * d, const char * key, const char * def);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key, convert to an int
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param notfound Value to return in case of error
+ @return integer
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the notfound value is returned.
+
+ Supported values for integers include the usual C notation
+ so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
+ are supported. Examples:
+
+ - "42" -> 42
+ - "042" -> 34 (octal -> decimal)
+ - "0x42" -> 66 (hexa -> decimal)
+
+ Warning: the conversion may overflow in various ways. Conversion is
+ totally outsourced to strtol(), see the associated man page for overflow
+ handling.
+
+ Credits: Thanks to A. Becker for suggesting strtol()
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getint(const dictionary * d, const char * key, int notfound);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key, convert to an long int
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param notfound Value to return in case of error
+ @return integer
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the notfound value is returned.
+
+ Supported values for integers include the usual C notation
+ so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
+ are supported. Examples:
+
+ - "42" -> 42
+ - "042" -> 34 (octal -> decimal)
+ - "0x42" -> 66 (hexa -> decimal)
+
+ Warning: the conversion may overflow in various ways. Conversion is
+ totally outsourced to strtol(), see the associated man page for overflow
+ handling.
+ */
+/*--------------------------------------------------------------------------*/
+long int iniparser_getlongint(const dictionary * d, const char * key, long int notfound);
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key, convert to a double
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param notfound Value to return in case of error
+ @return double
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the notfound value is returned.
+ */
+/*--------------------------------------------------------------------------*/
+double iniparser_getdouble(const dictionary * d, const char * key, double notfound);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Get the string associated to a key, convert to a boolean
+ @param d Dictionary to search
+ @param key Key string to look for
+ @param notfound Value to return in case of error
+ @return integer
+
+ This function queries a dictionary for a key. A key as read from an
+ ini file is given as "section:key". If the key cannot be found,
+ the notfound value is returned.
+
+ A true boolean is found if one of the following is matched:
+
+ - A string starting with 'y'
+ - A string starting with 'Y'
+ - A string starting with 't'
+ - A string starting with 'T'
+ - A string starting with '1'
+
+ A false boolean is found if one of the following is matched:
+
+ - A string starting with 'n'
+ - A string starting with 'N'
+ - A string starting with 'f'
+ - A string starting with 'F'
+ - A string starting with '0'
+
+ The notfound value returned if no boolean is identified, does not
+ necessarily have to be 0 or 1.
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getboolean(const dictionary * d, const char * key, int notfound);
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Set an entry in a dictionary.
+ @param ini Dictionary to modify.
+ @param entry Entry to modify (entry name)
+ @param val New value to associate to the entry.
+ @return int 0 if Ok, -1 otherwise.
+
+ If the given entry can be found in the dictionary, it is modified to
+ contain the provided value. If it cannot be found, the entry is created.
+ It is Ok to set val to NULL.
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_set(dictionary * ini, const char * entry, const char * val);
+
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Delete an entry in a dictionary
+ @param ini Dictionary to modify
+ @param entry Entry to delete (entry name)
+ @return void
+
+ If the given entry can be found, it is deleted from the dictionary.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_unset(dictionary * ini, const char * entry);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Finds out if a given entry exists in a dictionary
+ @param ini Dictionary to search
+ @param entry Name of the entry to look for
+ @return integer 1 if entry exists, 0 otherwise
+
+ Finds out if a given entry exists in the dictionary. Since sections
+ are stored as keys with NULL associated values, this is the only way
+ of querying for the presence of sections in a dictionary.
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_find_entry(const dictionary * ini, const char * entry) ;
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Parse an ini file and return an allocated dictionary object
+ @param ininame Name of the ini file to read.
+ @return Pointer to newly allocated dictionary
+
+ This is the parser for ini files. This function is called, providing
+ the name of the file to be read. It returns a dictionary object that
+ should not be accessed directly, but through accessor functions
+ instead.
+
+ The returned dictionary must be freed using iniparser_freedict().
+ */
+/*--------------------------------------------------------------------------*/
+dictionary * iniparser_load(const char * ininame);
+
+/*-------------------------------------------------------------------------*/
+/**
+ @brief Free all memory associated to an ini dictionary
+ @param d Dictionary to free
+ @return void
+
+ Free all memory associated to an ini dictionary.
+ It is mandatory to call this function before the dictionary object
+ gets out of the current context.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_freedict(dictionary * d);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif