/**
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#define _GNU_SOURCE
#include <libxml/parser.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
#include <libxml/xpointer.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>

int main(int argc, char **argv) {
#if defined(LIBXML_XPATH_ENABLED) && defined(LIBXML_XPTR_ENABLED)
  if (argc > 2) {
    xmlDocPtr doc;
    xmlXPathContextPtr xpathCtx;
    xmlInitParser();
    /* Load XML document */
    doc = xmlReadFile(argv[1], NULL, 0);
    if (doc) {
      /* Create xpath evaluation context */
      xpathCtx = (xmlXPathContextPtr)xmlXPtrNewContext(doc, (xmlNode *)NULL,
                                                       (xmlNode *)NULL);
      if (xpathCtx) {
        xmlXPathParserContextPtr pctxt =
            xmlXPathNewParserContext((xmlChar *)argv[2], xpathCtx);
        if (pctxt) {
          xmlXPathEvalExpr(pctxt);
          xmlXPathFreeContext(xpathCtx);
        }
        xmlFreeDoc(doc);
      }
      xmlCleanupParser();
    }
  }
#endif
  return EXIT_SUCCESS;
}