DOM_Output.hpp

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/*
Copyright (c) 2000, The JAP-Team 
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, 
are permitted provided that the following conditions are met:

  - Redistributions of source code must retain the above copyright notice, 
    this list of conditions and the following disclaimer.

  - Redistributions in binary form must reproduce the above copyright notice, 
    this list of conditions and the following disclaimer in the documentation and/or 
    other materials provided with the distribution.

  - Neither the name of the University of Technology Dresden, Germany nor the names of its contributors 
    may be used to endorse or promote products derived from this software without specific 
    prior written permission. 

  
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS 
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*/
#ifndef __DOM_OUTPUT__
#define __DOM_OUTPUT__
#ifndef ONLY_LOCAL_PROXY
#include "../CAQueue.hpp"

enum OUTPUT_FORMAT { OF_DEFAULT, OF_NULL_TERMINATED, OF_NEWLINE };

class MemFormatTarget: public XMLFormatTarget
  {
#define MEM_FORMART_TARGET_SPACE 1024
    public:
      MemFormatTarget()
        {
          m_pQueue=new CAQueue();
          m_Buff=new UINT8[MEM_FORMART_TARGET_SPACE];
          m_aktIndex=0;
        }

      ~MemFormatTarget()
        {
          delete m_pQueue;
          m_pQueue = NULL;
          delete[] m_Buff;
          m_Buff = NULL;
        }

#if (XERCES_VERSION_MAJOR <3)
      virtual void writeChars(const XMLByte* const toWrite, const unsigned int count, XMLFormatter* const /*formatter*/)
#else
      virtual void writeChars(const XMLByte* const toWrite, const XMLSize_t count, XMLFormatter* const /*formatter*/)
#endif
        {
          const XMLByte* write=toWrite;
          UINT32 c=count;
          while(c>0)
            {
              UINT32 space=MEM_FORMART_TARGET_SPACE-m_aktIndex;
              if(space>=c)
                {
                  memcpy(m_Buff+m_aktIndex,write,c);
                  m_aktIndex+=c;
                  return;
                }
              else
                {
                  memcpy(m_Buff+m_aktIndex,write,space);
                  write+=space;
                  c-=space;
                  m_pQueue->add(m_Buff,MEM_FORMART_TARGET_SPACE);
                  m_aktIndex=0;
                }
            }
        }

      SINT32 dumpMem(UINT8* buff,UINT32* size)
        {
          if(buff==NULL||size==NULL)
            return E_UNKNOWN;
          if(m_aktIndex>0&&m_pQueue->add(m_Buff,m_aktIndex)!=E_SUCCESS)
            return E_UNKNOWN;
          m_aktIndex=0;
          if(*size<m_pQueue->getSize())
            return E_SPACE;
          if(m_pQueue->peek(buff,size)!=E_SUCCESS)
            return E_UNKNOWN;
          return E_SUCCESS;
        }

      UINT8* dumpMem(UINT32* size, OUTPUT_FORMAT a_outputFormat)
        {
          if(size==NULL)
            return NULL;
          if(m_aktIndex>0&&m_pQueue->add(m_Buff,m_aktIndex)!=E_SUCCESS)
            return NULL;
          m_aktIndex=0;
          *size=m_pQueue->getSize();
          if (OF_NULL_TERMINATED == a_outputFormat)
          {
            *size += 1;
          }
          else if (OF_NEWLINE == a_outputFormat)
          {
            *size += 2;
          }
          UINT8* tmp=new UINT8[*size];
          if(m_pQueue->peek(tmp,size)!=E_SUCCESS)
            {
              delete[] tmp;
              tmp = NULL;
            }
          if (OF_NULL_TERMINATED == a_outputFormat)
          {
            tmp[*size] = NULL;
          }
          else if (OF_NEWLINE == a_outputFormat)
          {
            tmp[*size+1] = NULL;
            tmp[*size] = '\n';
          }
          return tmp;
        }

    private:
      CAQueue* m_pQueue;
      UINT8* m_Buff;
      UINT32 m_aktIndex;
  };

class DOM_Output
  {
    public:
      static SINT32 dumpToMem(const DOMNode* node,UINT8* buff, UINT32* size)
        {
          DOM_Output out;
          if( out.dumpNode(node,false)!=E_SUCCESS)
            return E_UNKNOWN;
          return out.m_pFormatTarget->dumpMem(buff,size);
        }

      
      static UINT8* dumpToMem(const DOMNode* node,UINT32* size)
        {
          return dumpToMem(node, size, OF_DEFAULT);
        }



      static UINT8* dumpToString(const DOMNode* node, bool a_bAddNewLine)
        {
          UINT32 dummy;
          if (a_bAddNewLine)
          {
            return dumpToMem(node, &dummy, OF_NEWLINE);
          }
          else
          {
            return dumpToMem(node, &dummy, OF_NULL_TERMINATED);
          }
        }

      
      static SINT32 makeCanonical(const DOMNode* node,UINT8* buff,UINT32* size)
        {
          DOM_Output out;
          if( out.dumpNode(node,true)!=E_SUCCESS)
            return E_UNKNOWN;
          return out.m_pFormatTarget->dumpMem(buff,size);
        }

    
      static UINT8* makeCanonical(const DOMNode* node,UINT32* size)
        {
          DOM_Output out;
          if( out.dumpNode(node,true)!=E_SUCCESS)
            return NULL;
          return out.m_pFormatTarget->dumpMem(size, OF_DEFAULT);
        }

    private:
      DOM_Output()
        {
          m_pFormatTarget=new MemFormatTarget();
          #if (_XERCES_VERSION >= 20300) //XMl-Version since Xerces 2.3.0
            m_pFormatter=new XMLFormatter(m_UTF8,m_1_0, m_pFormatTarget,
                                            XMLFormatter::NoEscapes, XMLFormatter::UnRep_Fail);
          #else
            m_pFormatter=new XMLFormatter(m_UTF8, m_pFormatTarget,
                                            XMLFormatter::NoEscapes, XMLFormatter::UnRep_Fail);
          #endif
        }
      ~DOM_Output()
        {
          delete m_pFormatTarget;
          m_pFormatTarget = NULL;
          delete m_pFormatter;
          m_pFormatter = NULL;
        }


      static UINT8* dumpToMem(const DOMNode* node,UINT32* size, OUTPUT_FORMAT a_outputFormat)
        {
          DOM_Output out;
          if( out.dumpNode(node,false)!=E_SUCCESS)
            return NULL;
          return out.m_pFormatTarget->dumpMem(size, a_outputFormat);
        }


      SINT32 dumpNode(const DOMNode* toWrite,bool bCanonical);
      XMLFormatter*       m_pFormatter;
      MemFormatTarget*    m_pFormatTarget;
      static const XMLCh  m_XML[41]; 
      static const XMLCh  m_UTF8[6]; 
      static const XMLCh  m_1_0[4]; 
};
#endif
#endif //ONLY_LOCAL_PROXY