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 "talk/xmllite/xmlelement.h" 31#include "talk/base/common.h" 32#include "talk/xmpp/constants.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 UNUSED(pctx); 102 UNUSED(errCode); 103 psph_->XmlError(); 104} 105 106} 107