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479 lines
14 KiB
479 lines
14 KiB
//C- -*- C++ -*-
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//C- -------------------------------------------------------------------
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//C- DjVuLibre-3.5
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//C- Copyright (c) 2002 Leon Bottou and Yann Le Cun.
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//C- Copyright (c) 2001 AT&T
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//C-
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//C- This software is subject to, and may be distributed under, the
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//C- GNU General Public License, Version 2. The license should have
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//C- accompanied the software or you may obtain a copy of the license
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//C- from the Free Software Foundation at http://www.fsf.org .
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//C-
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//C- This program is distributed in the hope that it will be useful,
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//C- but WITHOUT ANY WARRANTY; without even the implied warranty of
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//C- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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//C- GNU General Public License for more details.
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//C-
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//C- DjVuLibre-3.5 is derived from the DjVu(r) Reference Library
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//C- distributed by Lizardtech Software. On July 19th 2002, Lizardtech
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//C- Software authorized us to replace the original DjVu(r) Reference
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//C- Library notice by the following text (see doc/lizard2002.djvu):
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//C-
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//C- ------------------------------------------------------------------
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//C- | DjVu (r) Reference Library (v. 3.5)
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//C- | Copyright (c) 1999-2001 LizardTech, Inc. All Rights Reserved.
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//C- | The DjVu Reference Library is protected by U.S. Pat. No.
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//C- | 6,058,214 and patents pending.
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//C- |
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//C- | This software is subject to, and may be distributed under, the
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//C- | GNU General Public License, Version 2. The license should have
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//C- | accompanied the software or you may obtain a copy of the license
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//C- | from the Free Software Foundation at http://www.fsf.org .
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//C- |
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//C- | The computer code originally released by LizardTech under this
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//C- | license and unmodified by other parties is deemed "the LIZARDTECH
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//C- | ORIGINAL CODE." Subject to any third party intellectual property
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//C- | claims, LizardTech grants recipient a worldwide, royalty-free,
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//C- | non-exclusive license to make, use, sell, or otherwise dispose of
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//C- | the LIZARDTECH ORIGINAL CODE or of programs derived from the
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//C- | LIZARDTECH ORIGINAL CODE in compliance with the terms of the GNU
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//C- | General Public License. This grant only confers the right to
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//C- | infringe patent claims underlying the LIZARDTECH ORIGINAL CODE to
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//C- | the extent such infringement is reasonably necessary to enable
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//C- | recipient to make, have made, practice, sell, or otherwise dispose
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//C- | of the LIZARDTECH ORIGINAL CODE (or portions thereof) and not to
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//C- | any greater extent that may be necessary to utilize further
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//C- | modifications or combinations.
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//C- |
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//C- | The LIZARDTECH ORIGINAL CODE is provided "AS IS" WITHOUT WARRANTY
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//C- | OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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//C- | TO ANY WARRANTY OF NON-INFRINGEMENT, OR ANY IMPLIED WARRANTY OF
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//C- | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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//C- +------------------------------------------------------------------
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//
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// $Id: DjVuMessageLite.cpp,v 1.13 2005/04/27 16:34:13 leonb Exp $
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// $Name: release_3_5_15 $
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#if NEED_GNUG_PRAGMAS
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# pragma implementation
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#endif
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// From: Leon Bottou, 1/31/2002
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// All these I18N XML messages are Lizardtech innovations.
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// For DjvuLibre, I changed the path extraction logic
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// and added support for non I18N messages.
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#include "DjVuMessageLite.h"
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#include "GOS.h"
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#include "XMLTags.h"
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#include "ByteStream.h"
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#include "GURL.h"
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#include "debug.h"
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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// #include <stdio.h>
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#ifdef WIN32
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#include <tchar.h>
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#include <atlbase.h>
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#include <windows.h>
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#include <winreg.h>
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#endif
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#ifdef UNIX
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#include <unistd.h>
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#include <pwd.h>
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#include <sys/types.h>
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#endif
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#include <locale.h>
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#ifdef HAVE_NAMESPACES
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namespace DJVU {
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# ifdef NOT_DEFINED // Just to fool emacs c++ mode
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}
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#endif
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#endif
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const DjVuMessageLite& (*DjVuMessageLite::create)(void) =
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DjVuMessageLite::create_lite;
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static const char *failed_to_parse_XML=
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ERR_MSG("DjVuMessage.failed_to_parse_XML");
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static const char *unrecognized=
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ERR_MSG("DjVuMessage.Unrecognized");
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static const char *uparameter=
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ERR_MSG("DjVuMessage.Parameter");
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#ifdef LIZARDTECH_1_800_NUMBER
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static const char unrecognized_default[] =
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"** Unrecognized DjVu Message: [Contact LizardTech at "
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LIZARDTECH_1_800_NUMBER " \n"
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"\t** Message name: %1!s!";
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#else
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static const char unrecognized_default[] =
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"** Unrecognized DjVu Message:\n"
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"\t** Message name: %1!s!";
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#endif
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static const char uparameter_default[] =
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"\t Parameter: %1!s!";
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static const char failed_to_parse_XML_default[]=
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"Failed to parse XML message file: 	'%1!s!'.";
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static const char namestring[]="name";
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static const char valuestring[]="value";
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static const char numberstring[]="number";
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static const char bodystring[]="BODY";
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static const char messagestring[]="MESSAGE";
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GPList<ByteStream> &
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DjVuMessageLite::getByteStream(void)
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{
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static GPList<ByteStream> gbs;
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return gbs;
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}
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GP<DjVuMessageLite> &
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DjVuMessageLite::getDjVuMessageLite(void)
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{
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static GP<DjVuMessageLite> message;
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return message;
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}
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void
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DjVuMessageLite::AddByteStreamLater(const GP<ByteStream> &bs)
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{
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getByteStream().append(bs);
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}
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// There is only object of class DjVuMessage in a program, and here it is:
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//DjVuMessage DjVuMsg;
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const DjVuMessageLite &
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DjVuMessageLite::create_lite(void)
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{
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GP<DjVuMessageLite> &static_message=getDjVuMessageLite();
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if(!static_message)
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{
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static_message=new DjVuMessageLite;
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}
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DjVuMessageLite &m=*static_message;
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GPList<ByteStream> &bs = getByteStream();
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for(GPosition pos;(pos=bs);bs.del(pos))
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{
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m.AddByteStream(bs[pos]);
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}
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return m;
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}
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// Constructor
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DjVuMessageLite::DjVuMessageLite( void ) {}
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// Destructor
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DjVuMessageLite::~DjVuMessageLite( ) {}
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void
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DjVuMessageLite::perror( const GUTF8String & MessageList )
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{
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DjVuPrintErrorUTF8("%s\n",(const char *)DjVuMessageLite::LookUpUTF8(MessageList));
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}
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// Expands message lists by looking up the message IDs and inserting
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// arguments into the retrieved messages.
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// N.B. The resulting string may be encoded in UTF-8 format (ISO 10646-1 Annex R)
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// and SHOULD NOT BE ASSUMED TO BE ASCII.
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GUTF8String
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DjVuMessageLite::LookUp( const GUTF8String & MessageList ) const
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{
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// DEBUG_MSG( "========== DjVuMessageLite::LookUp ==========\n" <<
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// MessageList <<
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// "\n========== DjVuMessageLite::LookUp ==========\n" );
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GUTF8String result; // Result string; begins empty
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if(errors.length())
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{
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const GUTF8String err1(errors);
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(const_cast<GUTF8String &>(errors)).empty();
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result=LookUp(err1)+"\n";
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}
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int start = 0; // Beginning of next message
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int end = MessageList.length(); // End of the message string
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// Isolate single messages and process them
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while( start < end )
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{
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if( MessageList[start] == '\n' )
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{
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result += MessageList[start++]; // move the newline to the result
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// and advance to the next message
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}
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else
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{
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// Find the end of the next message and process it
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int next_ending = MessageList.search((unsigned long)'\n', start);
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if( next_ending < 0 )
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next_ending = end;
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result += LookUpSingle( MessageList.substr(start, next_ending-start) );
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// Advance to the next message
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start = next_ending;
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}
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}
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// All done
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return result;
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}
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// Expands a single message and inserts the arguments. Single_Message
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// contains no separators (newlines), but includes all the parameters
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// separated by tabs.
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GUTF8String
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DjVuMessageLite::LookUpSingle( const GUTF8String &Single_Message ) const
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{
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#if HAS_CTRL_C_IN_ERR_MSG
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if (Single_Message[0] != '\003')
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return Single_Message;
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#endif
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// Isolate the message ID and get the corresponding message text
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int ending_posn = Single_Message.contains("\t\v");
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if( ending_posn < 0 )
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ending_posn = Single_Message.length();
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GUTF8String msg_text;
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GUTF8String msg_number;
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const GUTF8String message=Single_Message.substr(0,ending_posn);
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LookUpID( message, msg_text, msg_number );
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// Check whether we found anything
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if( !msg_text.length())
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{
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if(message == unrecognized)
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{
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msg_text = unrecognized_default;
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}else if(message == uparameter)
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{
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msg_text = uparameter_default;
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}else if(message == failed_to_parse_XML)
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{
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msg_text = failed_to_parse_XML_default;
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}else
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{
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return LookUpSingle(unrecognized + ("\t" + Single_Message));
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}
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}
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// Insert the parameters (if any)
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unsigned int param_num = 0;
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while( (unsigned int)ending_posn < Single_Message.length() )
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{
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GUTF8String arg;
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const int start_posn = ending_posn+1;
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if(Single_Message[ending_posn] == '\v')
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{
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ending_posn=Single_Message.length();
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arg=LookUpSingle(Single_Message.substr(start_posn,ending_posn));
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}else
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{
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ending_posn = Single_Message.contains("\v\t",start_posn);
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if( ending_posn < 0 )
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ending_posn = Single_Message.length();
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arg=Single_Message.substr(start_posn, ending_posn-start_posn);
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}
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InsertArg( msg_text, ++param_num, arg);
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}
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// Insert the message number
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InsertArg( msg_text, 0, msg_number );
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return msg_text;
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}
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// Looks up the msgID in the file of messages and returns a pointer to
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// the beginning of the translated message, if found; and an empty string
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// otherwise.
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void
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DjVuMessageLite::LookUpID( const GUTF8String &xmsgID,
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GUTF8String &message_text,
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GUTF8String &message_number ) const
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{
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if(!Map.isempty())
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{
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GUTF8String msgID = xmsgID;
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#if HAS_CTRL_C_IN_ERR_MSG
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int start = 0;
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while (msgID[start] == '\003')
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start ++;
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if (start > 0)
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msgID = msgID.substr(start, msgID.length() - start);
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#endif
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GPosition pos=Map.contains(msgID);
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if(pos)
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{
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const GP<lt_XMLTags> tag=Map[pos];
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GPosition valuepos=tag->get_args().contains(valuestring);
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if(valuepos)
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{
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message_text=tag->get_args()[valuepos];
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}else
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{
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const GUTF8String raw(tag->get_raw());
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const int start_line=raw.search((unsigned long)'\n',0);
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const int start_text=raw.nextNonSpace(0);
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const int end_text=raw.firstEndSpace(0);
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if(start_line<0 || start_text<0 || start_text < start_line)
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{
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message_text=raw.substr(0,end_text).fromEscaped();
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}else
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{
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message_text=raw.substr(start_line+1,end_text-start_line-1).fromEscaped();
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}
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}
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GPosition numberpos=tag->get_args().contains(numberstring);
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if(numberpos)
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{
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message_number=tag->get_args()[numberpos];
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}
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}
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}
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}
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// Insert a string into the message text. Will insert into any field
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// description. Except for an ArgId of zero (message number), if the ArgId
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// is not found, the routine adds a line with the parameter so information
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// will not be lost.
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void
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DjVuMessageLite::InsertArg( GUTF8String &message,
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const int ArgId, const GUTF8String &arg ) const
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{
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// argument target string
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const GUTF8String target= "%"+GUTF8String(ArgId)+"!";
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// location of target string
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int format_start = message.search( (const char *)target );
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if( format_start >= 0 )
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{
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do
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{
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const int n=format_start+target.length()+1;
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const int format_end=message.search((unsigned long)'!',n);
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if(format_end > format_start)
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{
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const int len=1+format_end-n;
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if(len && isascii(message[n-1]))
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{
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GUTF8String narg;
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GUTF8String format="%"+message.substr(n-1,len);
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switch(format[len])
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{
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case 'd':
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case 'i':
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narg.format((const char *)format,arg.toInt());
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break;
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case 'u':
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case 'o':
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case 'x':
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case 'X':
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narg.format((const char *)format,(unsigned int)arg.toInt());
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break;
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case 'f':
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{
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int endpos;
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narg.format((const char *)format, arg.toDouble(0,endpos));
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if( endpos < 0 )
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narg = arg;
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}
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break;
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default:
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narg.format((const char *)format,(const char *)arg);
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break;
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}
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message = message.substr( 0, format_start )+narg
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+message.substr( format_end+1, -1 );
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}else
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{
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message = message.substr( 0, format_start )+arg
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+message.substr( format_end+1, -1 );
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}
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}
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format_start=message.search((const char*)target, format_start+arg.length());
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} while(format_start >= 0);
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}
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else
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{
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// Not found, fake it
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if( ArgId != 0 )
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{
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message += "\n"+LookUpSingle(uparameter+("\t"+arg));
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}
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}
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}
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// A C function to perform a message lookup. Arguments are a buffer to received the
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// translated message, a buffer size (bytes), and a message_list. The translated
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// result is returned in msg_buffer encoded in UTF-8. In case of error, msg_buffer is
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// empty (i.e., msg_buffer[0] == '\0').
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void
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DjVuMessageLite_LookUp( char *msg_buffer, const unsigned int buffer_size, const char *message )
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{
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GUTF8String converted = DjVuMessageLite::LookUpUTF8( message );
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if( converted.length() >= buffer_size )
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msg_buffer[0] = '\0';
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else
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strcpy( msg_buffer, converted );
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}
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void
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DjVuMessageLite::AddByteStream(const GP<ByteStream> &bs)
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{
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const GP<lt_XMLTags> gtags(lt_XMLTags::create(bs));
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lt_XMLTags &tags=*gtags;
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GPList<lt_XMLTags> Bodies=tags.get_Tags(bodystring);
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if(! Bodies.isempty())
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{
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lt_XMLTags::get_Maps(messagestring,namestring,Bodies,Map);
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}
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}
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#ifdef HAVE_NAMESPACES
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}
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# ifndef NOT_USING_DJVU_NAMESPACE
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using namespace DJVU;
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# endif
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#endif
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void
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DjVuWriteError( const char *message )
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{
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G_TRY {
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GP<ByteStream> errout = ByteStream::get_stderr();
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if (errout)
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{
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const GUTF8String external = DjVuMessageLite::LookUpUTF8( message );
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errout->writestring(external+"\n");
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}
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// Need to catch all exceptions because these might be
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// called from an outer exception handler (with prejudice)
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} G_CATCH_ALL { } G_ENDCATCH;
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}
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void
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DjVuWriteMessage( const char *message )
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{
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G_TRY {
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GP<ByteStream> strout = ByteStream::get_stdout();
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if (strout)
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{
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const GUTF8String external = DjVuMessageLite::LookUpUTF8( message );
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strout->writestring(external+"\n");
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}
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// Need to catch all exceptions because these might be
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// called from an outer exception handler (with prejudice)
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} G_CATCH_ALL { } G_ENDCATCH;
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}
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