1  <![CDATA[
       2  #include <stdio.h>
       3  #include <string.h>
       4  #include <stdlib.h>
       5  #include <libxml/xmlmemory.h>
       6  #include <libxml/parser.h>
       7  
       8  void
       9  parseStory (xmlDocPtr doc, xmlNodePtr cur, char *keyword) {
      10  
      11  	xmlNewTextChild (cur, NULL, "keyword", keyword);
      12      return;
      13  }
      14  
      15  xmlDocPtr
      16  parseDoc(char *docname, char *keyword) {
      17  
      18  	xmlDocPtr doc;
      19  	xmlNodePtr cur;
      20  
      21  	doc = xmlParseFile(docname);
      22  	
      23  	if (doc == NULL ) {
      24  		fprintf(stderr,"Document not parsed successfully. \n");
      25  		return (NULL);
      26  	}
      27  	
      28  	cur = xmlDocGetRootElement(doc);
      29  	
      30  	if (cur == NULL) {
      31  		fprintf(stderr,"empty document\n");
      32  		xmlFreeDoc(doc);
      33  		return (NULL);
      34  	}
      35  	
      36  	if (xmlStrcmp(cur->name, (const xmlChar *) "story")) {
      37  		fprintf(stderr,"document of the wrong type, root node != story");
      38  		xmlFreeDoc(doc);
      39  		return (NULL);
      40  	}
      41  	
      42  	cur = cur->xmlChildrenNode;
      43  	while (cur != NULL) {
      44  		if ((!xmlStrcmp(cur->name, (const xmlChar *)"storyinfo"))){
      45  			parseStory (doc, cur, keyword);
      46  		}
      47  		 
      48  	cur = cur->next;
      49  	}
      50  	return(doc);
      51  }
      52  
      53  int
      54  main(int argc, char **argv) {
      55  
      56  	char *docname;
      57  	char *keyword;
      58  	xmlDocPtr doc;
      59  
      60  	if (argc <= 2) {
      61  		printf("Usage: %s docname, keyword\n", argv[0]);
      62  		return(0);
      63  	}
      64  
      65  	docname = argv[1];
      66  	keyword = argv[2];
      67  	doc = parseDoc (docname, keyword);
      68  	if (doc != NULL) {
      69  		xmlSaveFormatFile (docname, doc, 0);
      70  		xmlFreeDoc(doc);
      71  	}
      72  	
      73  	return (1);
      74  }
      75  ]]>