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217 lines
7.1 KiB
217 lines
7.1 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: DjVmDir0.h,v 1.8 2003/11/07 22:08:20 leonb Exp $
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// $Name: release_3_5_15 $
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#ifndef _DJVMDIR0_H
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#define _DJVMDIR0_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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#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 ByteStream;
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/** @name DjVmDir0.h
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Files #"DjVmDir0.h"# and #"DjVmDir0.cpp"# contain implementation of
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\Ref{DjVmDir0} class responsible for reading and writing the directory
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of a multipage all-in-one-file DjVu document (usually referred to as
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{\bf DjVm} document.
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This is {\bf not} a navigation directory, which lists all the pages
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in a multipage document. The navigation directory is supported by class
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\Ref{DjVuNavDir}. This is the directory of a DjVm archive.
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@memo Directory of DjVu all-in-one-file DjVu documents.
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@author Andrei Erofeev <eaf@geocities.com>
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@version #$Id: DjVmDir0.h,v 1.8 2003/11/07 22:08:20 leonb Exp $# */
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//@{
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/** Directory of all-in-one-file DjVu documents (also known as DjVm documents).
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This class can read and write the directory (table of contents, in other
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words) of a DjVm document. This table of contents lists all {\bf files}
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included into the document, not {\bf pages} like \Ref{DjVuNavDir} does.
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It is normally stored in the document inside {\bf DIR0} chunk where
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{\bf "0"} refers to the version number.
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An object of this class can be created either as a result of the decoding
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of an existing DjVm file, or manually by calling the default constructor
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and adding later directory entries by means of \Ref{add_file}() function.
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You normally will not want to create or decode this directory manually.
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\Ref{DjVmFile} class will do it for you. */
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class DjVmDir0 : public GPEnabled
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{
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public:
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/** Describes a file record inside a DjVm document (archive) */
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class FileRec;
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private:
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GMap<GUTF8String, GP<FileRec> > name2file;
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GPArray<FileRec> num2file;
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protected:
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/// Default constructor
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DjVmDir0(void) {};
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public:
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/// Copy constructor
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DjVmDir0(const DjVmDir0 & d);
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static GP<DjVmDir0> create(void) {return new DjVmDir0;}
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virtual ~DjVmDir0(void) {};
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/// Returns the number of files in the DjVm archive
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int get_files_num(void) const;
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/// Returns the file record with name #name#
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GP<FileRec> get_file(const GUTF8String &name);
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/// Returns the file record number #file_num#
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GP<FileRec> get_file(int file_num);
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/** Creates a new file record with name #name# at offset
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#offset# and size #size#, which is in IFF format if
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#iff_file# is #TRUE#. */
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void add_file(const GUTF8String &name, bool iff_file,
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int offset=-1, int size=-1);
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/// Returns the size of the directory if it were encoded in #DIR0# chunk
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int get_size(void) const;
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/** Encodes the directory in #DIR0# chunk into the specified
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\Ref{ByteStream} */
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void encode(ByteStream & bs);
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/** Decodes the directory from #DIR0# chunk from the specified
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\Ref{ByteStream} */
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void decode(ByteStream & bs);
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};
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/** Describes a file record inside a DjVm document (archive) */
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class DjVmDir0::FileRec : public GPEnabled
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{
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public:
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/// Name of the file.
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GUTF8String name;
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/// 1 if the file is in IFF format.
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bool iff_file;
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/// Offset of the file in the archive.
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int offset;
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/// Size of the file
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int size;
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friend int operator==(const FileRec & f1, const FileRec & f2);
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/// Constructs the #FileRec# object
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FileRec(const GUTF8String &name, bool iff_file,
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int offset=-1, int size=-1);
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/// Default constructor
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FileRec(void);
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virtual ~FileRec(void);
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};
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inline
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DjVmDir0::FileRec::FileRec(
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const GUTF8String &name_in, bool iff_file_in, int offset_in, int size_in)
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: name(name_in), iff_file(iff_file_in), offset(offset_in), size(size_in)
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{
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}
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inline
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DjVmDir0::FileRec::FileRec(void) : iff_file(0), offset(-1), size(-1)
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{
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}
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inline
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DjVmDir0::FileRec::~FileRec(void)
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{
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}
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inline int
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DjVmDir0::get_files_num(void) const
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{
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return num2file.size();
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}
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inline
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DjVmDir0::DjVmDir0(const DjVmDir0 & d) :
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name2file(d.name2file), num2file(d.num2file)
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{
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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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#endif
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