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/*
* Copyright 2010 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/p2p/base/parsing.h"
#include <stdlib.h>
#include <algorithm>
#include "webrtc/base/stringutils.h"
namespace {
static const char kTrue[] = "true";
static const char kOne[] = "1";
}
namespace cricket {
bool BadParse(const std::string& text, ParseError* err) {
if (err != NULL) {
err->text = text;
}
return false;
}
bool BadWrite(const std::string& text, WriteError* err) {
if (err != NULL) {
err->text = text;
}
return false;
}
std::string GetXmlAttr(const buzz::XmlElement* elem,
const buzz::QName& name,
const std::string& def) {
std::string val = elem->Attr(name);
return val.empty() ? def : val;
}
std::string GetXmlAttr(const buzz::XmlElement* elem,
const buzz::QName& name,
const char* def) {
return GetXmlAttr(elem, name, std::string(def));
}
bool GetXmlAttr(const buzz::XmlElement* elem,
const buzz::QName& name, bool def) {
std::string val = elem->Attr(name);
std::transform(val.begin(), val.end(), val.begin(), tolower);
return val.empty() ? def : (val == kTrue || val == kOne);
}
int GetXmlAttr(const buzz::XmlElement* elem,
const buzz::QName& name, int def) {
std::string val = elem->Attr(name);
return val.empty() ? def : atoi(val.c_str());
}
const buzz::XmlElement* GetXmlChild(const buzz::XmlElement* parent,
const std::string& name) {
for (const buzz::XmlElement* child = parent->FirstElement();
child != NULL;
child = child->NextElement()) {
if (child->Name().LocalPart() == name) {
return child;
}
}
return NULL;
}
bool RequireXmlChild(const buzz::XmlElement* parent,
const std::string& name,
const buzz::XmlElement** child,
ParseError* error) {
*child = GetXmlChild(parent, name);
if (*child == NULL) {
return BadParse("element '" + parent->Name().Merged() +
"' missing required child '" + name,
error);
} else {
return true;
}
}
bool RequireXmlAttr(const buzz::XmlElement* elem,
const buzz::QName& name,
std::string* value,
ParseError* error) {
if (!elem->HasAttr(name)) {
return BadParse("element '" + elem->Name().Merged() +
"' missing required attribute '"
+ name.Merged() + "'",
error);
} else {
*value = elem->Attr(name);
return true;
}
}
void AddXmlAttrIfNonEmpty(buzz::XmlElement* elem,
const buzz::QName name,
const std::string& value) {
if (!value.empty()) {
elem->AddAttr(name, value);
}
}
void AddXmlChildren(buzz::XmlElement* parent,
const std::vector<buzz::XmlElement*>& children) {
for (std::vector<buzz::XmlElement*>::const_iterator iter = children.begin();
iter != children.end();
iter++) {
parent->AddElement(*iter);
}
}
void CopyXmlChildren(const buzz::XmlElement* source, buzz::XmlElement* dest) {
for (const buzz::XmlElement* child = source->FirstElement();
child != NULL;
child = child->NextElement()) {
dest->AddElement(new buzz::XmlElement(*child));
}
}
std::vector<buzz::XmlElement*> CopyOfXmlChildren(const buzz::XmlElement* elem) {
std::vector<buzz::XmlElement*> children;
for (const buzz::XmlElement* child = elem->FirstElement();
child != NULL;
child = child->NextElement()) {
children.push_back(new buzz::XmlElement(*child));
}
return children;
}
} // namespace cricket
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