#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>

// search for and print out text associated with "keyword" tag
void
//parseStory (xmlDocPtr doc, xmlNodePtr cur) {
parseFile (xmlDocPtr doc, xmlNodePtr cur) {

  xmlChar *key;
 
  // look for "keyword" tag among storyinfo's children
  cur = cur->xmlChildrenNode;
  while (cur != NULL) {
    
    if ((!xmlStrcmp(cur->name, (const xmlChar *) "name"))) {
      key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
      printf("Name: %s\n", key);
      //printf("keyword: %s\n", key);
      xmlFree(key);
    }
    
    if ((!xmlStrcmp(cur->name, (const xmlChar *) "description"))) {
      key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
      printf("Description: %s\n", key);
      //printf("keyword: %s\n", key);
      xmlFree(key);
    }
    
    if ((!xmlStrcmp(cur->name, (const xmlChar *) "exits"))) {
      key = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
      printf("Exits: %s\n", key);
      //printf("keyword: %s\n", key);
      xmlFree(key);
    }
    cur = cur->next;
  }
  return;
}

static void
parseDoc(char *docname) {

  xmlDocPtr doc;
  xmlNodePtr cur;
  //char *cur;           //add

  doc = xmlParseFile(docname);

  if (doc == NULL) {
    fprintf(stderr,"Document not parsed successfully. \n");
    return;
  }

  cur = xmlDocGetRootElement(doc);

  if (cur == NULL) {
    fprintf(stderr,"Document is empty. \n");
    xmlFreeDoc(doc);
    return;
  }

  // root tag must be "story"
  if (!xmlStrcmp(cur->name, (const xmlChar *) "gameworld")) {
    fprintf(stderr,"Document of the wrong type, root node != gameworld");
    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);
}

$ make task2a
cc `xml2-config --cflags` -c task2a.c
cc task2a.o -o readworld1 `xml2-config --libs`
cc   task2a.o readworld1   -o task2a
collect2: ld terminated with signal 11 [Segmentation fault]
readworld1(.rodata+0x0): multiple definition of `_fp_hw'
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crt1.o(.rodata+0x0):../sysdeps/i386/elf/start.S:47: first defined here
readworld1(.data+0x4): In function `__data_start':
: multiple definition of `__dso_handle'
/usr/lib/gcc-lib/i486-linux/3.3.4/crtbegin.o(.data+0x0): first defined here
readworld1(.init+0x0): In function `_init':
/disk/hdc2/glibc/debian-build/glibc_2.3.2.ds1-13.test3/glibc-2.3.2.ds1/build-tree/i386-libc/csu/crti.S:35: multiple definition of `_init'
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crti.o(.init+0x0):/disk/hdc2/glibc/debian-build/glibc_2.3.2.ds1-13.test3/glibc-2.3.2.ds1/build-tree/i386-libc/csu/crti.S:12: first defined here
readworld1(.text+0x0): In function `_start':
../sysdeps/i386/elf/start.S:47: multiple definition of `_start'
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crt1.o(.text+0x0):../sysdeps/i386/elf/start.S:47: first defined here
readworld1(.text+0x29f): In function `main':
: multiple definition of `main'
task2a.o(.text+0x1db): first defined here
readworld1(.fini+0x0): In function `_fini':
/disk/hdc2/glibc/debian-build/glibc_2.3.2.ds1-13.test3/glibc-2.3.2.ds1/build-tree/i386-libc/csu/crti.S:51: multiple definition of `_fini'
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crti.o(.fini+0x0): first defined here
readworld1(*ABS*+0x8049bf4): In function `__init_array_start':
task2a.c: multiple definition of `_GLOBAL_OFFSET_TABLE_'
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crt1.o(.got.plt+0x0):../sysdeps/i386/elf/start.S:47: first defined here
readworld1(.rodata+0x4): multiple definition of `_IO_stdin_used'
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crt1.o(.rodata+0x4):../sysdeps/i386/elf/start.S:53: first defined here
readworld1(.data+0x0): In function `__data_start':
: multiple definition of `__data_start'
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crt1.o(.data+0x0):../sysdeps/i386/elf/start.S:47: first defined here
readworld1(.text+0xc4): In function `parseFile':
: multiple definition of `parseFile'
task2a.o(.text+0x0): first defined here
/usr/lib/gcc-lib/i486-linux/3.3.4/../../../crt1.o(.dynamic+0x0):../sysdeps/i386/elf/start.S:47: multiple definition of `_DYNAMIC'
task2a.o(.text+0x2c): In function `parseFile':
: undefined reference to `xmlStrcmp'
task2a.o(.text+0x4d): In function `parseFile':
: undefined reference to `xmlNodeListGetString'
task2a.o(.text+0x86): In function `parseFile':
: undefined reference to `xmlStrcmp'
task2a.o(.text+0xa7): In function `parseFile':
: undefined reference to `xmlNodeListGetString'
task2a.o(.text+0xe0): In function `parseFile':
: undefined reference to `xmlStrcmp'
task2a.o(.text+0x101): In function `parseFile':
: undefined reference to `xmlNodeListGetString'
task2a.o(.text+0x145): In function `parseDoc':
: undefined reference to `xmlParseFile'
task2a.o(.text+0x170): In function `parseDoc':
: undefined reference to `xmlDocGetRootElement'
task2a.o(.text+0x199): In function `parseDoc':
: undefined reference to `xmlFreeDoc'
task2a.o(.text+0x1b1): In function `parseDoc':
: undefined reference to `xmlStrcmp'
task2a.o(.text+0x1d5): In function `parseDoc':
: undefined reference to `xmlFreeDoc'
make: *** [task2a] Error 1