/* 

 * section:  Tree

 * synopsis: Creates a tree

 * purpose:  Shows how to create document, nodes and dump it to stdout or file.

 * usage:    tree2 <filename>  -Default output: stdout

 * test:     tree2 > tree2.tmp && diff tree2.tmp $(srcdir)/tree2.res

 * author:   Lucas Brasilino <brasilino@recife.pe.gov.br>

 * copy:     see Copyright for the status of this software

 */

#include <stdio.h>

#include <libxml/parser.h>

#include <libxml/tree.h>

#if defined(LIBXML_TREE_ENABLED) && defined(LIBXML_OUTPUT_ENABLED)

/*

 *To compile this file using gcc you can type

 *gcc `xml2-config --cflags --libs` -o tree2 tree2.c

 */

/* A simple example how to create DOM. Libxml2 automagically 

 * allocates the necessary amount of memory to it.

*/

int

main(int argc, char **argv)

{

    xmlDocPtr doc = NULL;       /* document pointer */

    xmlNodePtr root_node = NULL, node = NULL, node1 = NULL;/* node pointers */

    char buff[256];

    int i, j;

    LIBXML_TEST_VERSION;

    /* 

     * Creates a new document, a node and set it as a root node

     */

    doc = xmlNewDoc(BAD_CAST "1.0");

    root_node = xmlNewNode(NULL, BAD_CAST "root");

    xmlDocSetRootElement(doc, root_node);

    /*

     * Creates a DTD declaration. Isn't mandatory. 

     */

    xmlCreateIntSubset(doc, BAD_CAST "root", NULL, BAD_CAST "tree2.dtd");

    /* 

     * xmlNewChild() creates a new node, which is "attached" as child node

     * of root_node node. 

     */

    xmlNewChild(root_node, NULL, BAD_CAST "node1",

                BAD_CAST "content of node 1");

    /* 

     * The same as above, but the new child node doesn't have a content 

     */

    xmlNewChild(root_node, NULL, BAD_CAST "node2", NULL);

    /* 

     * xmlNewProp() creates attributes, which is "attached" to an node.

     * It returns xmlAttrPtr, which isn't used here.

     */

    node =

        xmlNewChild(root_node, NULL, BAD_CAST "node3",

                    BAD_CAST "this node has attributes");

    xmlNewProp(node, BAD_CAST "attribute", BAD_CAST "yes");

    xmlNewProp(node, BAD_CAST "foo", BAD_CAST "bar");

    /*

     * Here goes another way to create nodes. xmlNewNode() and xmlNewText

     * creates a node and a text node separately. They are "attached"

     * by xmlAddChild() 

     */

    node = xmlNewNode(NULL, BAD_CAST "node4");

    node1 = xmlNewText(BAD_CAST

                   "other way to create content (which is also a node)");

    xmlAddChild(node, node1);

    xmlAddChild(root_node, node);

    /* 

     * A simple loop that "automates" nodes creation 

     */

    for (i = 5; i < 7; i++) {

        sprintf(buff, "node%d", i);

        node = xmlNewChild(root_node, NULL, BAD_CAST buff, NULL);

        for (j = 1; j < 4; j++) {

            sprintf(buff, "node%d%d", i, j);

            node1 = xmlNewChild(node, NULL, BAD_CAST buff, NULL);

            xmlNewProp(node1, BAD_CAST "odd", BAD_CAST((j % 2) ? "no" : "yes"));

        }

    }

    /* 

     * Dumping document to stdio or file

     */

    xmlSaveFormatFileEnc(argc > 1 ? argv[1] : "-", doc, "UTF-8", 1);

    /*free the document */

    xmlFreeDoc(doc);

    /*

     *Free the global variables that may

     *have been allocated by the parser.

     */

    xmlCleanupParser();

    /*

     * this is to debug memory for regression tests

     */

    xmlMemoryDump();

    return(0);

}

#else

int main(void) {

    fprintf(stderr, "tree support not compiled in\n");

    exit(1);

}

#endif