186c60abb2
* filename_cmp.c: Replace include of ctype.h by include of
safe-ctype.h.
(filename_cmp): Use TOLOWER instead of tolower for conversions
that are locale-independent.
* Makefile.in (filename_cmp.o): Add dependency on safe-ctype.h.
From-SVN: r124399
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* File name comparison routine.
|
|
|
|
Copyright (C) 2007 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software Foundation,
|
|
Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#include "filenames.h"
|
|
#include "safe-ctype.h"
|
|
|
|
/*
|
|
|
|
@deftypefn Extension int filename_cmp (const char *@var{s1}, const char *@var{s2})
|
|
|
|
Return zero if the two file names @var{s1} and @var{s2} are equivalent.
|
|
If not equivalent, the returned value is similar to what @code{strcmp}
|
|
would return. In other words, it returns a negative value if @var{s1}
|
|
is less than @var{s2}, or a positive value if @var{s2} is greater than
|
|
@var{s2}.
|
|
|
|
This function does not normalize file names. As a result, this function
|
|
will treat filenames that are spelled differently as different even in
|
|
the case when the two filenames point to the same underlying file.
|
|
However, it does handle the fact that on DOS-like file systems, forward
|
|
and backward slashes are equal.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
int
|
|
filename_cmp (const char *s1, const char *s2)
|
|
{
|
|
#ifndef HAVE_DOS_BASED_FILE_SYSTEM
|
|
return strcmp(s1, s2);
|
|
#else
|
|
for (;;)
|
|
{
|
|
int c1 = TOLOWER (*s1);
|
|
int c2 = TOLOWER (*s2);
|
|
|
|
/* On DOS-based file systems, the '/' and the '\' are equivalent. */
|
|
if (c1 == '/')
|
|
c1 = '\\';
|
|
if (c2 == '/')
|
|
c2 = '\\';
|
|
|
|
if (c1 != c2)
|
|
return (c1 - c2);
|
|
|
|
if (c1 == '\0')
|
|
return 0;
|
|
|
|
s1++;
|
|
s2++;
|
|
}
|
|
#endif
|
|
}
|
|
|