G. Code for Retrieving Attribute Value Example

G. Code for Retrieving Attribute Value Example
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+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <libxml/xmlmemory.h>
+#include <libxml/parser.h>
+
+void
+getReference (xmlDocPtr doc, xmlNodePtr cur) {
+
+	xmlChar *uri;
+	cur = cur->xmlChildrenNode;
+	while (cur != NULL) {
+	    if ((!xmlStrcmp(cur->name, (const xmlChar *)"reference"))) {
+		    uri = xmlGetProp(cur, "uri");
+		    printf("uri: %s\n", uri);
+		    xmlFree(uri);
+	    }
+	    cur = cur->next;
+	}
+	return;
+}
+
+
+void
+parseDoc(char *docname) {
+
+	xmlDocPtr doc;
+	xmlNodePtr cur;
+
+	doc = xmlParseFile(docname);
+	
+	if (doc == NULL ) {
+		fprintf(stderr,"Document not parsed successfully. \n");
+		return;
+	}
+	
+	cur = xmlDocGetRootElement(doc);
+	
+	if (cur == NULL) {
+		fprintf(stderr,"empty document\n");
+		xmlFreeDoc(doc);
+		return;
+	}
+	
+	if (xmlStrcmp(cur->name, (const xmlChar *) "story")) {
+		fprintf(stderr,"document of the wrong type, root node != story");
+		xmlFreeDoc(doc);
+		return;
+	}
+	
+	getReference (doc, cur);
+	xmlFreeDoc(doc);
+	return;
+}
+
+int
+main(int argc, char **argv) {
+
+	char *docname;
+
+	if (argc <= 1) {
+		printf("Usage: %s docname\n", argv[0]);
+		return(0);
+	}
+
+	docname = argv[1];
+	parseDoc (docname);
+	
+	return (1);
+}
+
+

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