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//
// "$Id: filename_absolute.cxx,v 1.4 1999/01/07 19:17:34 mike Exp $"
//
// Filename expansion routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-1999 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@easysw.com".
//
/* expand a file name by prepending current directory, deleting . and
.. (not really correct for symbolic links) between the prepended
current directory. Use $PWD if it exists.
Returns true if any changes were made.
*/
#include <FL/filename.H>
#include <stdlib.h>
#include <string.h>
#if defined(WIN32) && !defined(CYGNUS)
# include <direct.h>
# define getcwd(a,b) _getdcwd(0,a,b)
#else
# include <unistd.h>
# ifdef __EMX__
# define getcwd _getcwd2
# endif
#endif
#if defined(WIN32) || defined(__EMX__)
inline int isdirsep(char c) {return c=='/' || c=='\\';}
#else
#define isdirsep(c) ((c)=='/')
#endif
int filename_absolute(char *to,const char *from) {
if (isdirsep(*from) || *from == '|'
#if defined(WIN32) || defined(__EMX__)
|| from[1]==':'
#endif
) {
strcpy(to,from);
return 0;
}
char *a,temp[FL_PATH_MAX];
const char *start = from;
a = getenv("PWD");
if (a) strncpy(temp,a,FL_PATH_MAX);
else {a = getcwd(temp,FL_PATH_MAX); if (!a) return 0;}
#if defined(WIN32) || defined(__EMX__)
for (a = temp; *a; a++) if (*a=='\\') *a = '/'; // ha ha
#else
a = temp+strlen(temp);
#endif
if (isdirsep(*(a-1))) a--;
/* remove intermediate . and .. names: */
while (*start == '.') {
if (start[1]=='.' && isdirsep(start[2])) {
char *b;
for (b = a-1; b >= temp && !isdirsep(*b); b--);
if (b < temp) break;
a = b;
start += 3;
} else if (isdirsep(start[1])) {
start += 2;
} else
break;
}
*a++ = '/';
strcpy(a,start);
strcpy(to,temp);
return 1;
}
//
// End of "$Id: filename_absolute.cxx,v 1.4 1999/01/07 19:17:34 mike Exp $".
//
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