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372 lines
9.5 KiB
372 lines
9.5 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: GOS.cpp,v 1.12 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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#include "GException.h"
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#include "GThreads.h"
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#include "GOS.h"
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#include "GURL.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <math.h>
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#include <string.h>
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#ifdef WIN32
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# include <atlbase.h>
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# include <windows.h>
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# include <direct.h>
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#endif
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#ifdef OS2
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# define INCL_DOS
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# include <os2.h>
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#endif
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#if defined(UNIX) || defined(OS2)
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# include <errno.h>
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# include <sys/types.h>
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# include <sys/stat.h>
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# include <sys/time.h>
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# include <fcntl.h>
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# include <pwd.h>
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# include <stdio.h>
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# include <unistd.h>
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#endif
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#ifdef macintosh
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# include <unix.h>
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# include <errno.h>
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# include <unistd.h>
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#endif
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// -- TRUE FALSE
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#undef TRUE
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#undef FALSE
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#define TRUE 1
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#define FALSE 0
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// -- MAXPATHLEN
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#ifndef MAXPATHLEN
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# ifdef _MAX_PATH
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# define MAXPATHLEN _MAX_PATH
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# else
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# define MAXPATHLEN 1024
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# endif
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#else
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# if ( MAXPATHLEN < 1024 )
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# undef MAXPATHLEN
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# define MAXPATHLEN 1024
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# endif
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#endif
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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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#if defined(AUTOCONF) && !defined(HAVE_STRERROR)
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# define NEED_STRERROR
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#elif defined(sun) && !defined(__svr4__)
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# define NEED_STRERROR
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#elif defined(REIMPLEMENT_STRERROR)
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# define NEED_STRERROR
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#endif
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#ifdef NEED_STRERROR
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char *
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strerror(int errno)
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{
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extern int sys_nerr;
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extern char *sys_errlist[];
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if (errno>0 && errno<sys_nerr)
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return sys_errlist[errno];
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return "unknown stdio error";
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}
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#endif
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static const char slash='/';
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static const char percent='%';
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static const char backslash='\\';
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static const char colon=':';
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static const char dot='.';
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static const char nillchar=0;
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// -----------------------------------------
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// Functions for dealing with filenames
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// -----------------------------------------
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static inline int
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finddirsep(const GUTF8String &fname)
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{
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#if defined(UNIX)
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return fname.rsearch('/',0);
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#elif defined(WIN32) || defined(OS2)
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return fname.rcontains("\\/",0);
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#elif defined(macintosh)
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return fname.rcontains(":/",0);
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#else
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#error "Define something here for your operating system"
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#endif
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}
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// basename(filename[, suffix])
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// -- returns the last component of filename and removes suffix
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// when present. works like /bin/basename.
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GUTF8String
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GOS::basename(const GUTF8String &gfname, const char *suffix)
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{
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if(!gfname.length())
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return gfname;
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const char *fname=gfname;
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#if defined(WIN32) || defined(OS2)
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// Special cases
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if (fname[1] == colon)
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{
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if(!fname[2])
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{
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return gfname;
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}
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if (!fname[3] && (fname[2]== slash || fname[2]== backslash))
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{
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char string_buffer[4];
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string_buffer[0] = fname[0];
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string_buffer[1] = colon;
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string_buffer[2] = backslash;
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string_buffer[3] = 0;
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return string_buffer;
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}
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}
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#endif
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// Allocate buffer
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GUTF8String retval(gfname,finddirsep(gfname)+1,(unsigned int)(-1));
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fname=retval;
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// Process suffix
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if (suffix)
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{
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if (suffix[0]== dot )
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suffix ++;
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if (suffix[0])
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{
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const GUTF8String gsuffix(suffix);
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const int sl = gsuffix.length();
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const char *s = fname + strlen(fname);
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if (s > fname + sl)
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{
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s = s - (sl + 1);
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if(*s == dot && (GUTF8String(s+1).downcase() == gsuffix.downcase()))
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{
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retval.setat((int)((size_t)s-(size_t)fname),0);
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}
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}
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}
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}
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return retval;
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}
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// errmsg --
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// -- A small helper function returning a
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// stdio error message in a static buffer.
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static GNativeString
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errmsg()
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{
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GNativeString buffer;
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const char *errname = strerror(errno);
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buffer.format("%s (errno = %d)", errname, errno);
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return buffer;
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}
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// -----------------------------------------
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// Functions for measuring time
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// -----------------------------------------
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// ticks() --
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// -- returns the number of milliseconds elapsed since
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// a system dependent date.
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unsigned long
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GOS::ticks()
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{
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#if defined(UNIX)
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struct timeval tv;
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if (gettimeofday(&tv, NULL) < 0)
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G_THROW(errmsg());
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return (unsigned long)( ((tv.tv_sec & 0xfffff)*1000)
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+ (tv.tv_usec/1000) );
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#elif defined(WIN32)
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DWORD clk = GetTickCount();
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return (unsigned long)clk;
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#elif defined(OS2)
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ULONG clk = 0;
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DosQuerySysInfo(QSV_MS_COUNT, QSV_MS_COUNT, (PVOID)&clk, sizeof(ULONG));
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return clk;
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#elif defined(macintosh)
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return (unsigned long)((double)TickCount()*16.66);
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#else
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# error "Define something here for your operating system"
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#endif
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}
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// sleep(int milliseconds) --
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// -- sleeps during the specified time (in milliseconds)
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void
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GOS::sleep(int milliseconds)
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{
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#if defined(UNIX)
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struct timeval tv;
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tv.tv_sec = milliseconds / 1000;
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tv.tv_usec = (milliseconds - (tv.tv_sec * 1000)) * 1000;
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# if defined(THREADMODEL) && (THREADMODEL==COTHREADS)
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GThread::select(0, NULL, NULL, NULL, &tv);
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# else
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select(0, NULL, NULL, NULL, &tv);
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# endif
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#elif defined(WIN32)
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Sleep(milliseconds);
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#elif defined(OS2)
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DosSleep(milliseconds);
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#elif defined(macintosh)
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unsigned long tick = ticks(), now;
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while (1) {
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now = ticks();
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if ((tick+milliseconds) < now)
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break;
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GThread::yield();
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}
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#endif
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}
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// -----------------------------------------
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// Testing
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// -----------------------------------------
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// cwd([dirname])
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// -- changes directory to dirname (when specified).
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// returns the full path name of the current directory.
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GUTF8String
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GOS::cwd(const GUTF8String &dirname)
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{
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#if defined(UNIX) || defined(macintosh) || defined(OS2)
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if (dirname.length() && chdir(dirname.getUTF82Native())==-1)//MBCS cvt
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G_THROW(errmsg());
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char *string_buffer;
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GPBuffer<char> gstring_buffer(string_buffer,MAXPATHLEN+1);
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char *result = getcwd(string_buffer,MAXPATHLEN);
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if (!result)
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G_THROW(errmsg());
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return GNativeString(result).getNative2UTF8();//MBCS cvt
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#elif defined (WIN32)
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char drv[2];
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if (dirname.length() && _chdir(dirname.getUTF82Native())==-1)//MBCS cvt
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G_THROW(errmsg());
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drv[0]= dot ; drv[1]=0;
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char *string_buffer;
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GPBuffer<char> gstring_buffer(string_buffer,MAXPATHLEN+1);
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char *result = getcwd(string_buffer,MAXPATHLEN);
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GetFullPathName(drv, MAXPATHLEN, string_buffer, &result);
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return GNativeString(string_buffer).getNative2UTF8();//MBCS cvt
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#else
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#error "Define something here for your operating system"
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#endif
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}
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GUTF8String
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GOS::getenv(const GUTF8String &name)
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{
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GUTF8String retval;
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if(name.length())
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{
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const char *env=::getenv(name.getUTF82Native());
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if(env)
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{
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retval=GNativeString(env);
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}
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}
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return retval;
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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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