#ifndef RESIP_Contents_hxx
#define RESIP_Contents_hxx

#include <iosfwd>

#include "resip/stack/LazyParser.hxx"
#include "resip/stack/Mime.hxx"
#include "resip/stack/StringCategory.hxx"
#include "resip/stack/Headers.hxx"
#include "resip/stack/HeaderFieldValue.hxx"
#include "rutil/Data.hxx"
#include "resip/stack/ContentsFactory.hxx"

namespace resip
{

class Token;
class Contents;
class HeaderFieldValue;
class ParseBuffer;

// MIME header types
class MIME_Header
{
};

class H_ContentID : public MIME_Header
{
   public:
      typedef Token Type;
};
extern H_ContentID h_ContentID;

class H_ContentDescription : public MIME_Header
{
   public:
      typedef StringCategory Type;
};
extern H_ContentDescription h_ContentDescription;
      
// Common type for all body contents
class Contents : public LazyParser
{
   public:
      // pass Mime instance for parameters

      Contents(HeaderFieldValue* headerFieldValue, const Mime& contentsType);
      Contents(const Mime& contentsType);
      Contents(const Contents& rhs);
      virtual ~Contents();
      Contents& operator=(const Contents& rhs);

      void preParseHeaders(ParseBuffer& pb);
      std::ostream& encodeHeaders(std::ostream& str) const;

      // access to wrapped contents (signed, encrypted)
      virtual Contents* getContents() {return this;}

      Contents* getContents(const Mime&);

      virtual Data getBodyData() const;

      virtual Contents* clone() const = 0;
      const Mime& getType() const {return mType;}

      static Contents* createContents(const Mime& contentType, 
                                      const Data& contents);

      bool exists(const HeaderBase& headerType) const;
      void remove(const HeaderBase& headerType);

      bool exists(const MIME_Header& headerType) const;
      void remove(const MIME_Header& headerType);

      // !dlb! break into const and non-const -- throw on const if not exists
      // !dlb! requires a nested exception...

      // shared header types
      H_ContentType::Type& header(const H_ContentType& headerType) const;
      H_ContentDisposition::Type& header(const H_ContentDisposition& headerType) const;
      H_ContentTransferEncoding::Type& header(const H_ContentTransferEncoding& headerType) const;
      H_ContentLanguages::Type& header(const H_ContentLanguages& headerType) const;

      // MIME specific header types
      H_ContentID::Type& header(const H_ContentID& headerType) const;
      H_ContentDescription::Type& header(const H_ContentDescription& headerType) const;

      int& version() {return mVersion;}
      int& minorVersion() {return mMinorVersion;}

      void addBuffer(char* buf);

   protected:
      void clear();
      virtual const Data& errorContext() const;

      mutable Mime mType;
      mutable H_ContentDisposition::Type *mDisposition;
      mutable H_ContentTransferEncoding::Type *mTransferEncoding;      
      mutable H_ContentLanguages::Type *mLanguages;
      mutable Token *mId;
      mutable H_ContentDescription::Type *mDescription;
      mutable StringCategory *mLength;

      mutable int mVersion;
      mutable int mMinorVersion;

      std::vector<char*> mBufferList;
};

}

#endif

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000-2005
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this std::list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this std::list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact vocal@vovida.org.
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 * 4. Products derived from this software may not be called "VOCAL", nor
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 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
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