/home/gian/Progetti/falcon/core/include/falcon/stringstream.h

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/*
   FALCON - The Falcon Programming Language.
   FILE: file_string.h

   Management of membuffer strings; directly included by file_base.h
   -------------------------------------------------------------------
   Author: Giancarlo Niccolai
   Begin: sab nov 13 2004

   -------------------------------------------------------------------
   (C) Copyright 2004: the FALCON developers (see list in AUTHORS file)

   See LICENSE file for licensing details.
*/

#ifndef flc_file_string_H
#define flc_file_string_H

#include <falcon/string.h>
#include <falcon/stream.h>

namespace Falcon {

class FALCON_DYN_CLASS StringStream: public Stream
{
private:
   class Buffer;
   Buffer* m_b;
   
   
protected:
   uint32 m_pos;
   virtual int64 seek( int64 pos, e_whence whence );
   
   void setBuffer( const String &source );
   void setBuffer( const char* source, int size=-1 );
   bool detachBuffer();
   
public:
   StringStream( int32 size=0 );
   StringStream( const String &strbuf );
   StringStream( const StringStream &strbuf );

   virtual ~StringStream();

   virtual bool close();
   virtual int32 read( void *buffer, int32 size );
   virtual bool readString( String &dest, uint32 size );
   virtual int32 write( const void *buffer, int32 size );
   virtual bool writeString( const String &source, uint32 begin = 0, uint32 end = csh::npos );
   virtual bool put( uint32 chr );
   virtual bool get( uint32 &chr );
   virtual int32 readAvailable( int32 msecs, const Sys::SystemData *sysData = 0 );
   virtual int32 writeAvailable( int32 msecs, const Sys::SystemData *sysData = 0 );

   virtual int64 tell();
   virtual bool truncate( int64 pos=-1 );

   uint32 length() const;
   uint32 allocated() const;
   byte *data() const;

   virtual bool errorDescription( ::Falcon::String &description ) const;

   void transfer( StringStream &strbuf );

   void getString( String &target ) const;
   
   String *getString() const
   {
      String *temp = new String;
      getString( *temp );
      return temp;
   }
   
   CoreString *getCoreString() const
   {
      CoreString *temp = new CoreString;
      getString( *temp );
      return temp;
   }


   String *closeToString();
   
   CoreString *closeToCoreString();
   
   bool closeToString( String &target );

   byte  *closeToBuffer();

   virtual int64 lastError() const;
   virtual FalconData *clone() const;
   virtual void gcMark( uint32 mark ) {}
};

}

#endif

/* end of file_string.h */

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