//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- +------------------------------------------------------------------ #ifndef _DJVUERRORLIST_H #define _DJVUERRORLIST_H #ifdef HAVE_CONFIG_H #include "config.h" #endif #if NEED_GNUG_PRAGMAS # pragma interface #endif #include "DjVuPort.h" #ifdef HAVE_NAMESPACES namespace DJVU { # ifdef NOT_DEFINED // Just to fool emacs c++ mode } #endif #endif class ByteStream; /** @name DjVuErrorList.h This file implements a very simple class for redirecting port caster messages that would normally end up on stderr to a double linked list. @memo DjVuErrorList class. @author Bill C Riemers */ //@{ /** #DjVuErrorList# provides a convenient way to redirect error messages from classes derived from DjVuPort to a list that can be accessed at any time. */ class DjVuErrorList : public DjVuSimplePort { protected: /// The normal port caster constructor. DjVuErrorList(void); public: static GP create(void) {return new DjVuErrorList();} /// This constructor allows the user to specify the ByteStream. GURL set_stream(GP); /// Append all error messages to the list virtual bool notify_error(const DjVuPort * source, const GUTF8String & msg); /// Append all status messages to the list virtual bool notify_status(const DjVuPort * source, const GUTF8String & msg); /// Add a new class to have its messages redirected here. inline void connect( const DjVuPort &port); /// Get the listing of errors, and clear the list. inline GList GetErrorList(void); /// Just clear the list. inline void ClearError(void); /// Get one error message and clear that message from the list. GUTF8String GetError(void); /// Check if there are anymore error messages. inline bool HasError(void) const; /// Get the listing of status messages, and clear the list. inline GList GetStatusList(void); /// Just clear the list. inline void ClearStatus(void); /// Get one status message and clear that message from the list. GUTF8String GetStatus(void); /// Check if there are any more status messages. inline bool HasStatus(void) const; /** This gets the data. We can't use the simple port's request data since we want to allow the user to specify the ByteStream. */ virtual GP request_data ( const DjVuPort * source, const GURL & url ); private: GURL pool_url; GP pool; GList Errors; GList Status; private: //dummy stuff static GURL set_stream(ByteStream *); }; inline void DjVuErrorList::connect( const DjVuPort &port ) { get_portcaster()->add_route(&port, this); } inline GList DjVuErrorList::GetErrorList(void) { GList retval=(const GList)Errors; Errors.empty(); return retval; } inline void DjVuErrorList::ClearError(void) { Errors.empty(); } inline GList DjVuErrorList::GetStatusList(void) { GList retval=(const GList)Status; Status.empty(); return retval; } inline void DjVuErrorList::ClearStatus(void) { Status.empty(); } inline bool DjVuErrorList::HasError(void) const { return !Errors.isempty(); } inline bool DjVuErrorList::HasStatus(void) const { return !Status.isempty(); } #ifdef HAVE_NAMESPACES } # ifndef NOT_USING_DJVU_NAMESPACE using namespace DJVU; # endif #endif #endif