The "xmldoc dump" cli command was simply concatenating xml documents into the output file. The resulting file had multiple "xml" processing instructions and multiple root elements which is illegal. Normally this isn't an issue because Asterisk has only 1 main xml documentation file but codec_opus has its own file so if it's downloaded and you do "xmldoc dump", the result is invalid. * Added 2 new functions to xml.c: ast_xml_copy_node_list creates a copy of a list of children. ast_xml_add_child_list adds a list to an existing list. * Modified handle_dump_docs to create a new output document and add to it the children from each input file. It then dumps the new document to the output file. Change-Id: I3f182d38c75776aee76413dadd2d489d54a85c07
403 lines
8.4 KiB
C
403 lines
8.4 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2008, Eliel C. Sardanons (LU1ALY) <eliels@gmail.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief XML abstraction layer
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*
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* \author Eliel C. Sardanons (LU1ALY) <eliels@gmail.com>
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/xml.h"
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#include "asterisk/logger.h"
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#include "asterisk/utils.h"
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#include "asterisk/autoconfig.h"
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#if defined(HAVE_LIBXML2)
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#include <libxml/xinclude.h>
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#include <libxml/xpath.h>
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/* libxml2 ast_xml implementation. */
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#ifdef HAVE_LIBXSLT
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#include <libxslt/xsltInternals.h>
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#include <libxslt/transform.h>
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#endif /* HAVE_LIBXSLT */
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int ast_xml_init(void)
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{
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LIBXML_TEST_VERSION
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return 0;
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}
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int ast_xml_finish(void)
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{
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xmlCleanupParser();
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#ifdef HAVE_LIBXSLT_CLEANUP
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xsltCleanupGlobals();
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#endif
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return 0;
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}
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struct ast_xml_doc *ast_xml_open(char *filename)
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{
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xmlDoc *doc;
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if (!filename) {
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return NULL;
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}
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doc = xmlReadFile(filename, NULL, XML_PARSE_RECOVER);
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if (!doc) {
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return NULL;
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}
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/* process xinclude elements. */
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if (xmlXIncludeProcess(doc) < 0) {
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xmlFreeDoc(doc);
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return NULL;
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}
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#ifdef HAVE_LIBXSLT
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{
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xsltStylesheetPtr xslt = xsltLoadStylesheetPI(doc);
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if (xslt) {
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xmlDocPtr tmpdoc = xsltApplyStylesheet(xslt, doc, NULL);
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xsltFreeStylesheet(xslt);
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xmlFreeDoc(doc);
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if (!tmpdoc) {
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return NULL;
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}
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doc = tmpdoc;
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}
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}
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#else /* no HAVE_LIBXSLT */
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ast_log(LOG_NOTICE, "XSLT support not found. XML documentation may be incomplete.\n");
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#endif /* HAVE_LIBXSLT */
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/* Optimize for XPath */
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xmlXPathOrderDocElems(doc);
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return (struct ast_xml_doc *) doc;
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}
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struct ast_xml_doc *ast_xml_new(void)
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{
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xmlDoc *doc;
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doc = xmlNewDoc((const xmlChar *) "1.0");
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return (struct ast_xml_doc *) doc;
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}
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struct ast_xml_node *ast_xml_new_node(const char *name)
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{
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xmlNode *node;
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if (!name) {
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return NULL;
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}
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node = xmlNewNode(NULL, (const xmlChar *) name);
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return (struct ast_xml_node *) node;
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}
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struct ast_xml_node *ast_xml_new_child(struct ast_xml_node *parent, const char *child_name)
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{
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xmlNode *child;
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if (!parent || !child_name) {
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return NULL;
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}
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child = xmlNewChild((xmlNode *) parent, NULL, (const xmlChar *) child_name, NULL);
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return (struct ast_xml_node *) child;
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}
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struct ast_xml_node *ast_xml_add_child(struct ast_xml_node *parent, struct ast_xml_node *child)
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{
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if (!parent || !child) {
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return NULL;
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}
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return (struct ast_xml_node *) xmlAddChild((xmlNode *) parent, (xmlNode *) child);
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}
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struct ast_xml_node *ast_xml_add_child_list(struct ast_xml_node *parent, struct ast_xml_node *child)
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{
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if (!parent || !child) {
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return NULL;
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}
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return (struct ast_xml_node *) xmlAddChildList((xmlNode *) parent, (xmlNode *) child);
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}
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struct ast_xml_node *ast_xml_copy_node_list(struct ast_xml_node *list)
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{
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if (!list) {
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return NULL;
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}
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return (struct ast_xml_node *) xmlCopyNodeList((xmlNode *) list);
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}
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struct ast_xml_doc *ast_xml_read_memory(char *buffer, size_t size)
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{
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xmlDoc *doc;
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if (!buffer) {
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return NULL;
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}
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if (!(doc = xmlParseMemory(buffer, (int) size))) {
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/* process xinclude elements. */
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if (xmlXIncludeProcess(doc) < 0) {
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xmlFreeDoc(doc);
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return NULL;
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}
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}
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return (struct ast_xml_doc *) doc;
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}
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void ast_xml_close(struct ast_xml_doc *doc)
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{
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if (!doc) {
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return;
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}
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xmlFreeDoc((xmlDoc *) doc);
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doc = NULL;
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}
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void ast_xml_set_root(struct ast_xml_doc *doc, struct ast_xml_node *node)
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{
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if (!doc || !node) {
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return;
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}
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xmlDocSetRootElement((xmlDoc *) doc, (xmlNode *) node);
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}
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struct ast_xml_node *ast_xml_get_root(struct ast_xml_doc *doc)
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{
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xmlNode *root_node;
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if (!doc) {
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return NULL;
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}
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root_node = xmlDocGetRootElement((xmlDoc *) doc);
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return (struct ast_xml_node *) root_node;
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}
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void ast_xml_free_node(struct ast_xml_node *node)
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{
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if (!node) {
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return;
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}
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xmlFreeNode((xmlNode *) node);
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node = NULL;
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}
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void ast_xml_free_attr(const char *attribute)
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{
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if (attribute) {
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xmlFree((char *) attribute);
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}
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}
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void ast_xml_free_text(const char *text)
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{
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if (text) {
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xmlFree((char *) text);
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}
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}
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const char *ast_xml_get_attribute(struct ast_xml_node *node, const char *attrname)
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{
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xmlChar *attrvalue;
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if (!node) {
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return NULL;
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}
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if (!attrname) {
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return NULL;
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}
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attrvalue = xmlGetProp((xmlNode *) node, (xmlChar *) attrname);
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return (const char *) attrvalue;
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}
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int ast_xml_set_attribute(struct ast_xml_node *node, const char *name, const char *value)
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{
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if (!name || !value) {
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return -1;
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}
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if (!xmlSetProp((xmlNode *) node, (xmlChar *) name, (xmlChar *) value)) {
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return -1;
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}
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return 0;
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}
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struct ast_xml_node *ast_xml_find_element(struct ast_xml_node *root_node, const char *name, const char *attrname, const char *attrvalue)
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{
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struct ast_xml_node *cur;
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const char *attr;
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if (!root_node) {
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return NULL;
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}
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for (cur = root_node; cur; cur = ast_xml_node_get_next(cur)) {
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/* Check if the name matchs */
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if (strcmp(ast_xml_node_get_name(cur), name)) {
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continue;
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}
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/* We need to check for a specific attribute name? */
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if (!attrname || !attrvalue) {
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return cur;
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}
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/* Get the attribute, we need to compare it. */
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if ((attr = ast_xml_get_attribute(cur, attrname))) {
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/* does attribute name/value matches? */
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if (!strcmp(attr, attrvalue)) {
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ast_xml_free_attr(attr);
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return cur;
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}
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ast_xml_free_attr(attr);
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}
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}
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return NULL;
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}
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struct ast_xml_doc *ast_xml_get_doc(struct ast_xml_node *node)
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{
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if (!node) {
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return NULL;
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}
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return (struct ast_xml_doc *) ((xmlNode *)node)->doc;
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}
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struct ast_xml_ns *ast_xml_find_namespace(struct ast_xml_doc *doc, struct ast_xml_node *node, const char *ns_name) {
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xmlNsPtr ns = xmlSearchNs((xmlDocPtr) doc, (xmlNodePtr) node, (xmlChar *) ns_name);
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return (struct ast_xml_ns *) ns;
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}
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const char *ast_xml_get_ns_href(struct ast_xml_ns *ns)
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{
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return (const char *) ((xmlNsPtr) ns)->href;
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}
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const char *ast_xml_get_text(struct ast_xml_node *node)
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{
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if (!node) {
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return NULL;
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}
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return (const char *) xmlNodeGetContent((xmlNode *) node);
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}
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void ast_xml_set_text(struct ast_xml_node *node, const char *content)
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{
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if (!node || !content) {
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return;
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}
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xmlNodeSetContent((xmlNode *) node, (const xmlChar *) content);
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}
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int ast_xml_doc_dump_file(FILE *output, struct ast_xml_doc *doc)
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{
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return xmlDocDump(output, (xmlDocPtr)doc);
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}
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const char *ast_xml_node_get_name(struct ast_xml_node *node)
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{
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return (const char *) ((xmlNode *) node)->name;
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}
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struct ast_xml_node *ast_xml_node_get_children(struct ast_xml_node *node)
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{
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return (struct ast_xml_node *) ((xmlNode *) node)->children;
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}
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struct ast_xml_node *ast_xml_node_get_next(struct ast_xml_node *node)
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{
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return (struct ast_xml_node *) ((xmlNode *) node)->next;
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}
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struct ast_xml_node *ast_xml_node_get_prev(struct ast_xml_node *node)
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{
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return (struct ast_xml_node *) ((xmlNode *) node)->prev;
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}
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struct ast_xml_node *ast_xml_node_get_parent(struct ast_xml_node *node)
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{
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return (struct ast_xml_node *) ((xmlNode *) node)->parent;
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}
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struct ast_xml_node *ast_xml_xpath_get_first_result(struct ast_xml_xpath_results *results)
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{
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return (struct ast_xml_node *) ((xmlXPathObjectPtr) results)->nodesetval->nodeTab[0];
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}
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void ast_xml_xpath_results_free(struct ast_xml_xpath_results *results)
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{
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xmlXPathFreeObject((xmlXPathObjectPtr) results);
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}
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int ast_xml_xpath_num_results(struct ast_xml_xpath_results *results)
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{
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return ((xmlXPathObjectPtr) results)->nodesetval->nodeNr;
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}
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struct ast_xml_xpath_results *ast_xml_query(struct ast_xml_doc *doc, const char *xpath_str)
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{
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xmlXPathContextPtr context;
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xmlXPathObjectPtr result;
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if (!(context = xmlXPathNewContext((xmlDoc *) doc))) {
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ast_log(LOG_ERROR, "Could not create XPath context!\n");
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return NULL;
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}
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result = xmlXPathEvalExpression((xmlChar *) xpath_str, context);
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xmlXPathFreeContext(context);
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if (!result) {
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ast_log(LOG_WARNING, "Error for query: %s\n", xpath_str);
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return NULL;
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}
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if (xmlXPathNodeSetIsEmpty(result->nodesetval)) {
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xmlXPathFreeObject(result);
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ast_debug(5, "No results for query: %s\n", xpath_str);
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return NULL;
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}
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return (struct ast_xml_xpath_results *) result;
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}
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#endif /* defined(HAVE_LIBXML2) */
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