3 * Copyright 2010, Google Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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28 #include "webrtc/p2p/base/parsing.h"
32 #include "webrtc/base/stringutils.h"
35 static const char kTrue[] = "true";
36 static const char kOne[] = "1";
41 bool BadParse(const std::string& text, ParseError* err) {
48 bool BadWrite(const std::string& text, WriteError* err) {
55 std::string GetXmlAttr(const buzz::XmlElement* elem,
56 const buzz::QName& name,
57 const std::string& def) {
58 std::string val = elem->Attr(name);
59 return val.empty() ? def : val;
62 std::string GetXmlAttr(const buzz::XmlElement* elem,
63 const buzz::QName& name,
65 return GetXmlAttr(elem, name, std::string(def));
68 bool GetXmlAttr(const buzz::XmlElement* elem,
69 const buzz::QName& name, bool def) {
70 std::string val = elem->Attr(name);
71 std::transform(val.begin(), val.end(), val.begin(), tolower);
73 return val.empty() ? def : (val == kTrue || val == kOne);
76 int GetXmlAttr(const buzz::XmlElement* elem,
77 const buzz::QName& name, int def) {
78 std::string val = elem->Attr(name);
79 return val.empty() ? def : atoi(val.c_str());
82 const buzz::XmlElement* GetXmlChild(const buzz::XmlElement* parent,
83 const std::string& name) {
84 for (const buzz::XmlElement* child = parent->FirstElement();
86 child = child->NextElement()) {
87 if (child->Name().LocalPart() == name) {
94 bool RequireXmlChild(const buzz::XmlElement* parent,
95 const std::string& name,
96 const buzz::XmlElement** child,
98 *child = GetXmlChild(parent, name);
100 return BadParse("element '" + parent->Name().Merged() +
101 "' missing required child '" + name,
108 bool RequireXmlAttr(const buzz::XmlElement* elem,
109 const buzz::QName& name,
112 if (!elem->HasAttr(name)) {
113 return BadParse("element '" + elem->Name().Merged() +
114 "' missing required attribute '"
115 + name.Merged() + "'",
118 *value = elem->Attr(name);
123 void AddXmlAttrIfNonEmpty(buzz::XmlElement* elem,
124 const buzz::QName name,
125 const std::string& value) {
126 if (!value.empty()) {
127 elem->AddAttr(name, value);
131 void AddXmlChildren(buzz::XmlElement* parent,
132 const std::vector<buzz::XmlElement*>& children) {
133 for (std::vector<buzz::XmlElement*>::const_iterator iter = children.begin();
134 iter != children.end();
136 parent->AddElement(*iter);
140 void CopyXmlChildren(const buzz::XmlElement* source, buzz::XmlElement* dest) {
141 for (const buzz::XmlElement* child = source->FirstElement();
143 child = child->NextElement()) {
144 dest->AddElement(new buzz::XmlElement(*child));
148 std::vector<buzz::XmlElement*> CopyOfXmlChildren(const buzz::XmlElement* elem) {
149 std::vector<buzz::XmlElement*> children;
150 for (const buzz::XmlElement* child = elem->FirstElement();
152 child = child->NextElement()) {
153 children.push_back(new buzz::XmlElement(*child));
158 } // namespace cricket