kc3-lang/libxml2/example/tree1.c

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• Hash : b0fc67aa
  Author :
  Date : 2024-06-15T22:53:55
  

  build: Remove --with-tree configuration option
  
  This option would allow for a smaller, but mostly useless minimal build.
  But it complicates the symbol availability logic in an insane way and
  requires specialized tools like our custom C parser in doc/apibuild.py.
  
  See #717.
  

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• example/tree1.c

• /**
   * section: Tree
   * synopsis: Navigates a tree to print element names
   * purpose: Parse a file to a tree, use xmlDocGetRootElement() to
   *          get the root element, then walk the document and print
   *          all the element name in document order.
   * usage: tree1 filename_or_URL
   * test: tree1 test2.xml > tree1.tmp && diff tree1.tmp $(srcdir)/tree1.res
   * author: Dodji Seketeli
   * copy: see Copyright for the status of this software.
   */
  #include <stdio.h>
  #include <libxml/parser.h>
  #include <libxml/tree.h>
  
  /*
   *To compile this file using gcc you can type
   *gcc `xml2-config --cflags --libs` -o xmlexample libxml2-example.c
   */
  
  /**
   * print_element_names:
   * @a_node: the initial xml node to consider.
   *
   * Prints the names of the all the xml elements
   * that are siblings or children of a given xml node.
   */
  static void
  print_element_names(xmlNode * a_node)
  {
      xmlNode *cur_node = NULL;
  
      for (cur_node = a_node; cur_node; cur_node = cur_node->next) {
          if (cur_node->type == XML_ELEMENT_NODE) {
              printf("node type: Element, name: %s\n", cur_node->name);
          }
  
          print_element_names(cur_node->children);
      }
  }
  
  
  /**
   * Simple example to parse a file called "file.xml", 
   * walk down the DOM, and print the name of the 
   * xml elements nodes.
   */
  int
  main(int argc, char **argv)
  {
      xmlDoc *doc = NULL;
      xmlNode *root_element = NULL;
  
      if (argc != 2)
          return(1);
  
      /*
       * this initialize the library and check potential ABI mismatches
       * between the version it was compiled for and the actual shared
       * library used.
       */
      LIBXML_TEST_VERSION
  
      /*parse the file and get the DOM */
      doc = xmlReadFile(argv[1], NULL, 0);
  
      if (doc == NULL) {
          printf("error: could not parse file %s\n", argv[1]);
      }
  
      /*Get the root element node */
      root_element = xmlDocGetRootElement(doc);
  
      print_element_names(root_element);
  
      /*free the document */
      xmlFreeDoc(doc);
  
      return 0;
  }
  

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