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