Current File : //usr/share/doc/libxml2-devel-2.9.1/examples/tree2.c
/*
* 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 */
xmlDtdPtr dtd = NULL; /* DTD pointer */
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.
*/
dtd = 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
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