F. Code for Add Attribute Example
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
xmlDocPtr
parseDoc(char *docname, char *uri) {
xmlDocPtr doc;
xmlNodePtr cur;
xmlNodePtr newnode;
xmlAttrPtr newattr;
doc = xmlParseFile(docname);
if (doc == NULL ) {
fprintf(stderr,"Document not parsed successfully. \n");
return (NULL);
}
cur = xmlDocGetRootElement(doc);
if (cur == NULL) {
fprintf(stderr,"empty document\n");
xmlFreeDoc(doc);
return (NULL);
}
if (xmlStrcmp(cur->name, (const xmlChar *) "story")) {
fprintf(stderr,"document of the wrong type, root node != story");
xmlFreeDoc(doc);
return (NULL);
}
newnode = xmlNewTextChild (cur, NULL, "reference", NULL);
newattr = xmlNewProp (newnode, "uri", uri);
return(doc);
}
int
main(int argc, char **argv) {
char *docname;
char *uri;
xmlDocPtr doc;
if (argc <= 2) {
printf("Usage: %s docname, uri\n", argv[0]);
return(0);
}
docname = argv[1];
uri = argv[2];
doc = parseDoc (docname, uri);
if (doc != NULL) {
xmlSaveFormatFile (docname, doc, 1);
xmlFreeDoc(doc);
}
return (1);
}