//C-  -*- C++ -*-

//C- -------------------------------------------------------------------

//C- DjVuLibre-3.5

//C- Copyright (c) 2002  Leon Bottou and Yann Le Cun.

//C- Copyright (c) 2001  AT&T

//C-

//C- This software is subject to, and may be distributed under, the

//C- GNU General Public License, either Version 2 of the license,

//C- or (at your option) any later version. The license should have

//C- accompanied the software or you may obtain a copy of the license

//C- from the Free Software Foundation at http://www.fsf.org .

//C-

//C- This program is distributed in the hope that it will be useful,

//C- but WITHOUT ANY WARRANTY; without even the implied warranty of

//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

//C- GNU General Public License for more details.

//C- 

//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library from

//C- Lizardtech Software.  Lizardtech Software has authorized us to

//C- replace the original DjVu(r) Reference Library notice by the following

//C- text (see doc/lizard2002.djvu and doc/lizardtech2007.djvu):

//C-

//C-  ------------------------------------------------------------------

//C- | DjVu (r) Reference Library (v. 3.5)

//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.

//C- | The DjVu Reference Library is protected by U.S. Pat. No.

//C- | 6,058,214 and patents pending.

//C- |

//C- | This software is subject to, and may be distributed under, the

//C- | GNU General Public License, either Version 2 of the license,

//C- | or (at your option) any later version. The license should have

//C- | accompanied the software or you may obtain a copy of the license

//C- | from the Free Software Foundation at http://www.fsf.org .

//C- |

//C- | The computer code originally released by LizardTech under this

//C- | license and unmodified by other parties is deemed "the LIZARDTECH

//C- | ORIGINAL CODE."  Subject to any third party intellectual property

//C- | claims, LizardTech grants recipient a worldwide, royalty-free, 

//C- | non-exclusive license to make, use, sell, or otherwise dispose of 

//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the 

//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU 

//C- | General Public License.   This grant only confers the right to 

//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to 

//C- | the extent such infringement is reasonably necessary to enable 

//C- | recipient to make, have made, practice, sell, or otherwise dispose 

//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to 

//C- | any greater extent that may be necessary to utilize further 

//C- | modifications or combinations.

//C- |

//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY

//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED

//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF

//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

//C- +------------------------------------------------------------------

#ifdef HAVE_CONFIG_H

# include "config.h"

#endif

#if NEED_GNUG_PRAGMAS

# pragma implementation

#endif

#include "DjVuErrorList.h"

#include "DjVmDoc.h"

#include "GException.h"

#include "GContainer.h"

#include "GOS.h"

#include "DataPool.h"

#include <string.h>

#ifdef HAVE_NAMESPACES

namespace DJVU {

# ifdef NOT_DEFINED // Just to fool emacs c++ mode

}

#endif

#endif

DjVuErrorList::DjVuErrorList() {}

GURL

DjVuErrorList::set_stream(GP<ByteStream> xibs)

{

  GUTF8String name;

  static unsigned long serial=0;

  pool=DataPool::create(xibs);

  name.format("data://%08lx/%08lx.djvu",

    ++serial,(unsigned long)(size_t)((const ByteStream *)xibs));

  pool_url=GURL::UTF8(name);

  return pool_url;

}

bool

DjVuErrorList::notify_error(const DjVuPort * source, const GUTF8String & msg)

{

  Errors.append(msg);

  return 1;

}

bool

DjVuErrorList::notify_status(const DjVuPort * source, const GUTF8String &msg)

{

  Status.append(msg);

  return 1;

}  

GUTF8String

DjVuErrorList::GetError(void)

{

  GUTF8String PrevError;

  GPosition pos;

  if((pos=Errors))

  {

    PrevError=Errors[pos];

    Errors.del(pos);

  }

  return PrevError;

}

GUTF8String

DjVuErrorList::GetStatus(void)

{

  GUTF8String PrevStatus;

  GPosition pos;

  if((pos=Status))

  {

    PrevStatus=Status[pos];

    Status.del(pos);

  }

  return PrevStatus;

}

GP<DataPool>

DjVuErrorList::request_data(const DjVuPort * source, const GURL & url)

{

   GP<DataPool> retval;

   G_TRY

   {

     if (pool && url.protocol().downcase() == "data")

     {

       if(url == pool_url)

       {

         retval=pool;

       }else if(url.base() == pool_url)

       {

         GUTF8String name=url.fname();

         GP<DjVmDoc> doc=DjVmDoc::create();

         GP<ByteStream> bs=pool->get_stream();

         doc->read(*bs);

         retval=doc->get_data(name);

       }

     }else if (url.is_local_file_url())

     {

//       GUTF8String fname=GOS::url_to_filename(url);

//       if (GOS::basename(fname)=="-") fname="-";

       retval=DataPool::create(url);

     }

   }

   G_CATCH_ALL

   {

     retval=0;

   } G_ENDCATCH;

   return retval;

}

#ifdef HAVE_NAMESPACES

}

# ifndef NOT_USING_DJVU_NAMESPACE

using namespace DJVU;

# endif

#endif