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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/base/stl_decl.h"
#include <vector>
#include <set>
#include <expat.h>
#include "talk/base/common.h"
#include "talk/xmllite/xmlelement.h"
#include "talk/xmllite/xmlbuilder.h"
#define new TRACK_NEW
namespace buzz {
XmlBuilder::XmlBuilder() :
pelCurrent_(NULL),
pelRoot_(NULL),
pvParents_(new std::vector<XmlElement *>()) {
}
void
XmlBuilder::Reset() {
pelRoot_.reset();
pelCurrent_ = NULL;
pvParents_->clear();
}
XmlElement *
XmlBuilder::BuildElement(XmlParseContext * pctx,
const char * name, const char ** atts) {
TQName tagName(pctx->ResolveTQName(name, false));
if (tagName == TQN_EMPTY)
return NULL;
XmlElement * pelNew = new XmlElement(tagName);
if (!*atts)
return pelNew;
std::set<TQName> seenNonlocalAtts;
while (*atts) {
TQName attName(pctx->ResolveTQName(*atts, true));
if (attName == TQN_EMPTY) {
delete pelNew;
return NULL;
}
// verify that namespaced names are unique
if (!attName.Namespace().empty()) {
if (seenNonlocalAtts.count(attName)) {
delete pelNew;
return NULL;
}
seenNonlocalAtts.insert(attName);
}
pelNew->AddAttr(attName, std::string(*(atts + 1)));
atts += 2;
}
return pelNew;
}
void
XmlBuilder::StartElement(XmlParseContext * pctx,
const char * name, const char ** atts) {
XmlElement * pelNew = BuildElement(pctx, name, atts);
if (pelNew == NULL) {
pctx->RaiseError(XML_ERROR_SYNTAX);
return;
}
if (!pelCurrent_) {
pelCurrent_ = pelNew;
pelRoot_.reset(pelNew);
pvParents_->push_back(NULL);
} else {
pelCurrent_->AddElement(pelNew);
pvParents_->push_back(pelCurrent_);
pelCurrent_ = pelNew;
}
}
void
XmlBuilder::EndElement(XmlParseContext * pctx, const char * name) {
UNUSED(pctx);
UNUSED(name);
pelCurrent_ = pvParents_->back();
pvParents_->pop_back();
}
void
XmlBuilder::CharacterData(XmlParseContext * pctx,
const char * text, int len) {
UNUSED(pctx);
if (pelCurrent_) {
pelCurrent_->AddParsedText(text, len);
}
}
void
XmlBuilder::Error(XmlParseContext * pctx, XML_Error err) {
UNUSED(pctx);
UNUSED(err);
pelRoot_.reset(NULL);
pelCurrent_ = NULL;
pvParents_->clear();
}
XmlElement *
XmlBuilder::CreateElement() {
return pelRoot_.release();
}
XmlElement *
XmlBuilder::BuiltElement() {
return pelRoot_.get();
}
XmlBuilder::~XmlBuilder() {
}
}
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