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#include "talk/xmpp/xmppstanzaparser.h"
29
30#include "webrtc/libjingle/xmllite/xmlelement.h"
31#include "talk/xmpp/constants.h"
32#include "webrtc/base/common.h"
33#ifdef EXPAT_RELATIVE_PATH
34#include "expat.h"
35#else
36#include "third_party/expat/v2_0_1/Source/lib/expat.h"
37#endif
38
39namespace buzz {
40
41XmppStanzaParser::XmppStanzaParser(XmppStanzaParseHandler *psph) :
42  psph_(psph),
43  innerHandler_(this),
44  parser_(&innerHandler_),
45  depth_(0),
46  builder_() {
47}
48
49void
50XmppStanzaParser::Reset() {
51  parser_.Reset();
52  depth_ = 0;
53  builder_.Reset();
54}
55
56void
57XmppStanzaParser::IncomingStartElement(
58    XmlParseContext * pctx, const char * name, const char ** atts) {
59  if (depth_++ == 0) {
60    XmlElement * pelStream = XmlBuilder::BuildElement(pctx, name, atts);
61    if (pelStream == NULL) {
62      pctx->RaiseError(XML_ERROR_SYNTAX);
63      return;
64    }
65    psph_->StartStream(pelStream);
66    delete pelStream;
67    return;
68  }
69
70  builder_.StartElement(pctx, name, atts);
71}
72
73void
74XmppStanzaParser::IncomingCharacterData(
75    XmlParseContext * pctx, const char * text, int len) {
76  if (depth_ > 1) {
77    builder_.CharacterData(pctx, text, len);
78  }
79}
80
81void
82XmppStanzaParser::IncomingEndElement(
83    XmlParseContext * pctx, const char * name) {
84  if (--depth_ == 0) {
85    psph_->EndStream();
86    return;
87  }
88
89  builder_.EndElement(pctx, name);
90
91  if (depth_ == 1) {
92    XmlElement *element = builder_.CreateElement();
93    psph_->Stanza(element);
94    delete element;
95  }
96}
97
98void
99XmppStanzaParser::IncomingError(
100    XmlParseContext * pctx, XML_Error errCode) {
101  RTC_UNUSED(pctx);
102  RTC_UNUSED(errCode);
103  psph_->XmlError();
104}
105
106}
107