/** * 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> #ifdef LIBXML_TREE_ENABLED /* *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); /* *Free the global variables that may *have been allocated by the parser. */ xmlCleanupParser(); return 0; } #else int main(void) { fprintf(stderr, "Tree support not compiled in\n"); exit(1); } #endif