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227 lines
8.7 KiB
227 lines
8.7 KiB
//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.h,v 1.9 2003/11/07 22:08:21 leonb Exp $
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// $Name: release_3_5_15 $
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#ifndef __DJVU_MESSAGE_LITE_H__
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#define __DJVU_MESSAGE_LITE_H__
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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 interface
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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 "GString.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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class lt_XMLTags;
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class ByteStream;
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/** Exception causes and external messages are passed as message lists which
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have the following syntax:
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message_list ::= single_message |
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single_message separator message_list
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separator ::= newline |
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newline | separator
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single_message ::= message_ID |
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message_ID parameters
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parameters ::= tab string |
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tab string parameters
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Message_IDs are looked up an external file and replaced by the message
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text strings they are mapped to. The message text may contain the
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following:
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Parameter specifications: These are modelled after printf format
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specifications and have one of the following forms:
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%n!s! %n!d! %n!i! %n!u! %n!x! %n!X!
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where n is the parameter number. The parameter number is indicated
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explicitly to allow for the possibility that the parameter order may
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change when the message text is translated into another language.
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The final letter ('s', 'd', 'i', 'u', 'x', or 'X') indicates the form
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of the parameter (string, integer, integer, unsigned integer, lowercase
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hexadecimal, or uppercase hexadecimal, respectively). In addition
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formating options such as precision available in sprintf, may be used.
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So, to print the third argument as 5 digit unsigned number, with leading
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zero's one could use:
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%3!05u!
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All of the arguments are actually strings. For forms that don't take
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string input ('d', 'i', 'u', 'x', or 'X'), and atoi() conversion is done
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on the string before formatting. In addition the form indicates to the
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translater whether to expect a word or a number.
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The strings are read in from XML. To to format the strings, use the
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relavent XML escape sequences, such as follows:
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[line feed]
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	 [horizontal tab]
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' [single quote]
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" [double quote]
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< [less than sign]
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> [greater than sign]
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After parameters have been inserted in the message text, the formatting
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strings are replaced by their usual equivalents (newline and tab
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respectively).
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If a message_id cannot be found in the external file, a message text
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is fabricated giving the message_id and the parameters (if any).
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Separators (newlines) are preserved in the translated message list.
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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
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Annex R) and SHOULD NOT BE ASSUMED TO BE ASCII.
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*/
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class DjVuMessageLite : public GPEnabled
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{
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protected:
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// Constructor:
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DjVuMessageLite( void );
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GMap<GUTF8String,GP<lt_XMLTags> > Map;
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GUTF8String errors;
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/// Creates a DjVuMessage class.
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static const DjVuMessageLite &real_create(void);
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public:
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/// Creates a DjVuMessage class.
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static const DjVuMessageLite& (*create)(void);
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/// Creates this class specifically.
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static const DjVuMessageLite &create_lite(void);
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/** Adds a byte stream to be parsed whenever the next DjVuMessage::create()
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call is made. */
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static void AddByteStreamLater(const GP<ByteStream> &bs);
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/** Destructor: Does any necessary cleanup. Actions depend on how the message
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file is implemented. */
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~DjVuMessageLite();
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/// Lookup the relavent string and parse the message.
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GUTF8String LookUp( const GUTF8String & MessageList ) const;
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//// Same as LookUp, but this is a static method.
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static GUTF8String LookUpUTF8( const GUTF8String & MessageList )
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{ return create().LookUp(MessageList); }
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/** Same as Lookup, but returns the a multibyte character string in the
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current locale. */
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static GNativeString LookUpNative( const GUTF8String & MessageList )
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{ return create().LookUp(MessageList).getUTF82Native(); }
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/// This is a simple alias to the above class, but does an fprintf to stderr.
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static void perror( const GUTF8String & MessageList );
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protected:
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/* Looks up the msgID in the file of messages. The strings message_text
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and message_number are returned if found. If not found, these strings
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are empty. */
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void LookUpID( const GUTF8String & msgID,
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GUTF8String &message_text, GUTF8String &message_number ) const;
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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 LookUpSingle( const GUTF8String & Single_Message ) const;
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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
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#ArgId# is not found, the routine adds a line with the parameter
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so information will not be lost. */
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void InsertArg(
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GUTF8String &message, const int ArgId, const GUTF8String &arg ) const;
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void AddByteStream(const GP<ByteStream> &bs);
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protected:
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/* Static storage of the DjVuMessage class. */
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static GP<DjVuMessageLite> &getDjVuMessageLite(void);
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/* Static storage of the ByteStream list. */
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static GPList<ByteStream> &getByteStream(void);
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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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#endif /* __DJVU_MESSAGE_LITE_H__ */
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