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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/libjingle/xmllite/xmlbuilder.h"
#include <set>
#include <vector>
#include "webrtc/libjingle/xmllite/xmlconstants.h"
#include "webrtc/libjingle/xmllite/xmlelement.h"
#include "webrtc/base/common.h"
namespace buzz {
XmlBuilder::XmlBuilder() :
pelCurrent_(NULL),
pelRoot_(),
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) {
QName tagName(pctx->ResolveQName(name, false));
if (tagName.IsEmpty())
return NULL;
XmlElement * pelNew = new XmlElement(tagName);
if (!*atts)
return pelNew;
std::set<QName> seenNonlocalAtts;
while (*atts) {
QName attName(pctx->ResolveQName(*atts, true));
if (attName.IsEmpty()) {
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) {
RTC_UNUSED(pctx);
RTC_UNUSED(name);
pelCurrent_ = pvParents_->back();
pvParents_->pop_back();
}
void
XmlBuilder::CharacterData(XmlParseContext * pctx,
const char * text, int len) {
RTC_UNUSED(pctx);
if (pelCurrent_) {
pelCurrent_->AddParsedText(text, len);
}
}
void
XmlBuilder::Error(XmlParseContext * pctx, XML_Error err) {
RTC_UNUSED(pctx);
RTC_UNUSED(err);
pelRoot_.reset(NULL);
pelCurrent_ = NULL;
pvParents_->clear();
}
XmlElement *
XmlBuilder::CreateElement() {
return pelRoot_.release();
}
XmlElement *
XmlBuilder::BuiltElement() {
return pelRoot_.get();
}
XmlBuilder::~XmlBuilder() {
}
} // namespace buzz
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