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162 lines
6.3 KiB
162 lines
6.3 KiB
15 years ago
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//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: GOS.h,v 1.8 2003/11/07 22:08:21 leonb Exp $
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// $Name: release_3_5_15 $
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#ifndef _GOS_H_
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#define _GOS_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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/** @name GOS.h
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Files #"GOS.h"# and #"GOS.cpp"# implement operating system
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dependent functions with a unified interface. All these functions
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are implemented as static member of class \Ref{GOS}.
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Functions are provided for testing the presence of a file or a directory
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(\Ref{GOS::is_file}, \Ref{GOS::is_dir}), for manipulating file and directory names
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(\Ref{GOS::dirname}, \Ref{GOS::basename}, \Ref{GOS::expand_name},
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for obtaining and changing the current directory (\Ref{GOS::cwd}),
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for converting between file names and urls (\Ref{GOS::filename_to_url},
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\Ref{GOS::url_to_filename}), and for counting time (\Ref{GOS::ticks},
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\Ref{GOS::sleep}).
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@memo
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Operating System dependent functions.
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@author
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L\'eon Bottou <leonb@research.att.com> -- Initial implementation
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@version
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#$Id: GOS.h,v 1.8 2003/11/07 22:08:21 leonb Exp $#
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*/
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//@{
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#include "DjVuGlobal.h"
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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 GURL;
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/** Operating System dependent functions. */
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class GOS
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{
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public:
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// -----------------------------------------
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// Functions for dealing with filenames
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// -----------------------------------------
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/** Returns the last component of file name #filename#. If the filename
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suffix matches argument #suffix#, the filename suffix is removed. This
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function works like the unix command #/bin/basename#, but also supports
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the naming conventions of other operating systems. */
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static GUTF8String basename(const GUTF8String &filename, const char *suffix=0);
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/** Sets and returns the current working directory.
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When argument #dirname# is specified, the current directory is changed
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to #dirname#. This function always returns the fully qualified name
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of the current directory. */
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static GUTF8String cwd(const GUTF8String &dirname=GUTF8String());
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// -----------------------------------------
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// Functions for measuring time
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// -----------------------------------------
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/** Returns a number of elapsed milliseconds. This number counts elapsed
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milliseconds since a operating system dependent date. This function is
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useful for timing code. */
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static unsigned long ticks();
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/** Sleeps during the specified time expressed in milliseconds.
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Other threads can run while the calling thread sleeps. */
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static void sleep(int milliseconds);
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/// Read the named variable from the environment, and converts it to UTF8.
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static GUTF8String getenv(const GUTF8String &name);
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#if 0
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// -------------------------------------------
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// Functions for converting filenames and urls
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// -------------------------------------------
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/** Encodes all reserved characters, so that the #filename# can be
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used inside a URL. Every reserved character is encoded using escape
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sequence in the form of #%XX#. The legal characters are alphanumeric and
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#$-_.+!*'(),:#.
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Use \Ref{decode_reserved}() to convert the URL back to the filename. */
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// static GString encode_reserved(const char * filename);
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static GString encode_mbcs_reserved(const char * filename);/*MBCS*/
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#endif
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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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