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//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, Version 2. 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
//C- distributed by Lizardtech Software. On July 19th 2002, Lizardtech
//C- Software authorized us to replace the original DjVu(r) Reference
//C- Library notice by the following text (see doc/lizard2002.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, Version 2. 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- +------------------------------------------------------------------
//
// $Id: GOS.h,v 1.8 2003/11/07 22:08:21 leonb Exp $
// $Name: release_3_5_15 $
#ifndef _GOS_H_
#define _GOS_H_
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if NEED_GNUG_PRAGMAS
# pragma interface
#endif
/** @name GOS.h
Files #"GOS.h"# and #"GOS.cpp"# implement operating system
dependent functions with a unified interface. All these functions
are implemented as static member of class \Ref{GOS}.
Functions are provided for testing the presence of a file or a directory
(\Ref{GOS::is_file}, \Ref{GOS::is_dir}), for manipulating file and directory names
(\Ref{GOS::dirname}, \Ref{GOS::basename}, \Ref{GOS::expand_name},
for obtaining and changing the current directory (\Ref{GOS::cwd}),
for converting between file names and urls (\Ref{GOS::filename_to_url},
\Ref{GOS::url_to_filename}), and for counting time (\Ref{GOS::ticks},
\Ref{GOS::sleep}).
@memo
Operating System dependent functions.
@author
L\'eon Bottou <leonb@research.att.com> -- Initial implementation
@version
#$Id: GOS.h,v 1.8 2003/11/07 22:08:21 leonb Exp $#
*/
//@{
#include "DjVuGlobal.h"
#include "GString.h"
#ifdef HAVE_NAMESPACES
namespace DJVU {
# ifdef NOT_DEFINED // Just to fool emacs c++ mode
}
#endif
#endif
class GURL;
/** Operating System dependent functions. */
class GOS
{
public:
// -----------------------------------------
// Functions for dealing with filenames
// -----------------------------------------
/** Returns the last component of file name #filename#. If the filename
suffix matches argument #suffix#, the filename suffix is removed. This
function works like the unix command #/bin/basename#, but also supports
the naming conventions of other operating systems. */
static GUTF8String basename(const GUTF8String &filename, const char *suffix=0);
/** Sets and returns the current working directory.
When argument #dirname# is specified, the current directory is changed
to #dirname#. This function always returns the fully qualified name
of the current directory. */
static GUTF8String cwd(const GUTF8String &dirname=GUTF8String());
// -----------------------------------------
// Functions for measuring time
// -----------------------------------------
/** Returns a number of elapsed milliseconds. This number counts elapsed
milliseconds since a operating system dependent date. This function is
useful for timing code. */
static unsigned long ticks();
/** Sleeps during the specified time expressed in milliseconds.
Other threads can run while the calling thread sleeps. */
static void sleep(int milliseconds);
/// Read the named variable from the environment, and converts it to UTF8.
static GUTF8String getenv(const GUTF8String &name);
#if 0
// -------------------------------------------
// Functions for converting filenames and urls
// -------------------------------------------
/** Encodes all reserved characters, so that the #filename# can be
used inside a URL. Every reserved character is encoded using escape
sequence in the form of #%XX#. The legal characters are alphanumeric and
#$-_.+!*'(),:#.
Use \Ref{decode_reserved}() to convert the URL back to the filename. */
// static GString encode_reserved(const char * filename);
static GString encode_mbcs_reserved(const char * filename);/*MBCS*/
#endif
};
//@}
// ------------
#ifdef HAVE_NAMESPACES
}
# ifndef NOT_USING_DJVU_NAMESPACE
using namespace DJVU;
# endif
#endif
#endif
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