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118 lines
3.3 KiB
118 lines
3.3 KiB
4 months ago
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/*
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* section: Tree
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* synopsis: Creates a tree
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* purpose: Shows how to create document, nodes and dump it to stdout or file.
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* usage: tree2 <filename> -Default output: stdout
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* test: tree2 > tree2.tmp && diff tree2.tmp $(srcdir)/tree2.res
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* author: Lucas Brasilino <brasilino@recife.pe.gov.br>
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* copy: see Copyright for the status of this software
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*/
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#include <stdio.h>
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#if defined(LIBXML_TREE_ENABLED) && defined(LIBXML_OUTPUT_ENABLED)
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/*
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*To compile this file using gcc you can type
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*gcc `xml2-config --cflags --libs` -o tree2 tree2.c
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*/
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/* A simple example how to create DOM. Libxml2 automagically
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* allocates the necessary amount of memory to it.
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*/
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int
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main(int argc, char **argv)
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{
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xmlDocPtr doc = NULL; /* document pointer */
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xmlNodePtr root_node = NULL, node = NULL, node1 = NULL;/* node pointers */
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char buff[256];
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int i, j;
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LIBXML_TEST_VERSION;
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/*
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* Creates a new document, a node and set it as a root node
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*/
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doc = xmlNewDoc(BAD_CAST "1.0");
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root_node = xmlNewNode(NULL, BAD_CAST "root");
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xmlDocSetRootElement(doc, root_node);
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/*
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* Creates a DTD declaration. Isn't mandatory.
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*/
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xmlCreateIntSubset(doc, BAD_CAST "root", NULL, BAD_CAST "tree2.dtd");
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/*
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* xmlNewChild() creates a new node, which is "attached" as child node
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* of root_node node.
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*/
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xmlNewChild(root_node, NULL, BAD_CAST "node1",
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BAD_CAST "content of node 1");
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/*
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* The same as above, but the new child node doesn't have a content
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*/
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xmlNewChild(root_node, NULL, BAD_CAST "node2", NULL);
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/*
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* xmlNewProp() creates attributes, which is "attached" to an node.
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* It returns xmlAttrPtr, which isn't used here.
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*/
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node =
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xmlNewChild(root_node, NULL, BAD_CAST "node3",
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BAD_CAST "this node has attributes");
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xmlNewProp(node, BAD_CAST "attribute", BAD_CAST "yes");
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xmlNewProp(node, BAD_CAST "foo", BAD_CAST "bar");
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/*
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* Here goes another way to create nodes. xmlNewNode() and xmlNewText
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* creates a node and a text node separately. They are "attached"
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* by xmlAddChild()
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*/
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node = xmlNewNode(NULL, BAD_CAST "node4");
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node1 = xmlNewText(BAD_CAST
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"other way to create content (which is also a node)");
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xmlAddChild(node, node1);
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xmlAddChild(root_node, node);
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/*
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* A simple loop that "automates" nodes creation
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*/
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for (i = 5; i < 7; i++) {
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sprintf(buff, "node%d", i);
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node = xmlNewChild(root_node, NULL, BAD_CAST buff, NULL);
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for (j = 1; j < 4; j++) {
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sprintf(buff, "node%d%d", i, j);
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node1 = xmlNewChild(node, NULL, BAD_CAST buff, NULL);
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xmlNewProp(node1, BAD_CAST "odd", BAD_CAST((j % 2) ? "no" : "yes"));
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}
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}
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/*
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* Dumping document to stdio or file
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*/
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xmlSaveFormatFileEnc(argc > 1 ? argv[1] : "-", doc, "UTF-8", 1);
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/*free the document */
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xmlFreeDoc(doc);
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/*
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*Free the global variables that may
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*have been allocated by the parser.
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*/
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xmlCleanupParser();
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/*
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* this is to debug memory for regression tests
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*/
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xmlMemoryDump();
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return(0);
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}
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#else
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int main(void) {
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fprintf(stderr, "tree support not compiled in\n");
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exit(1);
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}
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#endif
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