/* Build like so:
 *   gcc test_writes_invalid.c `pkg-config gio-2.0 libxml-2.0 --cflags --libs`
 *
 * then try:
 *   xmllint --nooout ./output.txt to see:
 * to see:
 *    ./output.xml:4: parser error : PCDATA invalid Char value 12
 */

#include <libxml/parser.h>
#include <libxml/tree.h>
#include <gio/gio.h>


int
main(int argc, char** argv)
{
  g_type_init ();
  
  xmlDocPtr document = xmlNewDoc(BAD_CAST "1.0");
  xmlNodePtr root_node = xmlNewNode(NULL, BAD_CAST "root");
  xmlDocSetRootElement(document, root_node);

  GFile* file = g_file_new_for_path("./input.txt");
  char* contents = 0;
  gsize length = 0;
  if(!g_file_load_contents(file, 0, &contents, &length, NULL, NULL))
  {
    g_warning("g_file_load_contents() failed");
    return -1;
  }
  
  xmlNodePtr child_node = xmlNewText(BAD_CAST contents);
  xmlAddChild(root_node, child_node); 
  g_free(contents);

  xmlSaveFormatFileEnc("output.xml", document, "UTF-8", 1);

  return 0;
}