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      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 TALK_XMPP_XMPPSTANZAPARSER_H_
     29 #define TALK_XMPP_XMPPSTANZAPARSER_H_
     30 
     31 #include "webrtc/libjingle/xmllite/xmlbuilder.h"
     32 #include "webrtc/libjingle/xmllite/xmlparser.h"
     33 
     34 
     35 namespace buzz {
     36 
     37 class XmlElement;
     38 
     39 class XmppStanzaParseHandler {
     40 public:
     41   virtual ~XmppStanzaParseHandler() {}
     42   virtual void StartStream(const XmlElement * pelStream) = 0;
     43   virtual void Stanza(const XmlElement * pelStanza) = 0;
     44   virtual void EndStream() = 0;
     45   virtual void XmlError() = 0;
     46 };
     47 
     48 class XmppStanzaParser {
     49 public:
     50   XmppStanzaParser(XmppStanzaParseHandler *psph);
     51   bool Parse(const char * data, size_t len, bool isFinal)
     52     { return parser_.Parse(data, len, isFinal); }
     53   void Reset();
     54 
     55 private:
     56   class ParseHandler : public XmlParseHandler {
     57   public:
     58     ParseHandler(XmppStanzaParser * outer) : outer_(outer) {}
     59     virtual void StartElement(XmlParseContext * pctx,
     60                const char * name, const char ** atts)
     61       { outer_->IncomingStartElement(pctx, name, atts); }
     62     virtual void EndElement(XmlParseContext * pctx,
     63                const char * name)
     64       { outer_->IncomingEndElement(pctx, name); }
     65     virtual void CharacterData(XmlParseContext * pctx,
     66                const char * text, int len)
     67       { outer_->IncomingCharacterData(pctx, text, len); }
     68     virtual void Error(XmlParseContext * pctx,
     69                XML_Error errCode)
     70       { outer_->IncomingError(pctx, errCode); }
     71   private:
     72     XmppStanzaParser * const outer_;
     73   };
     74 
     75   friend class ParseHandler;
     76 
     77   void IncomingStartElement(XmlParseContext * pctx,
     78                const char * name, const char ** atts);
     79   void IncomingEndElement(XmlParseContext * pctx,
     80                const char * name);
     81   void IncomingCharacterData(XmlParseContext * pctx,
     82                const char * text, int len);
     83   void IncomingError(XmlParseContext * pctx,
     84                XML_Error errCode);
     85 
     86   XmppStanzaParseHandler * psph_;
     87   ParseHandler innerHandler_;
     88   XmlParser parser_;
     89   int depth_;
     90   XmlBuilder builder_;
     91 
     92  };
     93 
     94 
     95 }
     96 
     97 #endif  // TALK_XMPP_XMPPSTANZAPARSER_H_
     98