1/*
2 * libjingle
3 * Copyright 2004--2005, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
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.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef _xmlbuilder_h_
29#define _xmlbuilder_h_
30
31#include <string>
32#include <vector>
33#include "talk/base/scoped_ptr.h"
34#include "talk/xmllite/xmlparser.h"
35
36#ifdef EXPAT_RELATIVE_PATH
37#include "expat.h"
38#else
39#include "third_party/expat/v2_0_1/Source/lib/expat.h"
40#endif  // EXPAT_RELATIVE_PATH
41
42namespace buzz {
43
44class XmlElement;
45class XmlParseContext;
46
47
48class XmlBuilder : public XmlParseHandler {
49public:
50  XmlBuilder();
51
52  static XmlElement * BuildElement(XmlParseContext * pctx,
53                                  const char * name, const char ** atts);
54  virtual void StartElement(XmlParseContext * pctx,
55                            const char * name, const char ** atts);
56  virtual void EndElement(XmlParseContext * pctx, const char * name);
57  virtual void CharacterData(XmlParseContext * pctx,
58                             const char * text, int len);
59  virtual void Error(XmlParseContext * pctx, XML_Error);
60  virtual ~XmlBuilder();
61
62  void Reset();
63
64  // Take ownership of the built element; second call returns NULL
65  XmlElement * CreateElement();
66
67  // Peek at the built element without taking ownership
68  XmlElement * BuiltElement();
69
70private:
71  XmlElement * pelCurrent_;
72  talk_base::scoped_ptr<XmlElement> pelRoot_;
73  talk_base::scoped_ptr<std::vector<XmlElement*> > pvParents_;
74};
75
76}
77
78#endif
79