Mercurial > hg > CbC > CbC_gcc
comparison libiberty/filename_cmp.c @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children | f6334be47118 |
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1 /* File name comparison routine. | |
2 | |
3 Copyright (C) 2007 Free Software Foundation, Inc. | |
4 | |
5 This program is free software; you can redistribute it and/or modify | |
6 it under the terms of the GNU General Public License as published by | |
7 the Free Software Foundation; either version 2, or (at your option) | |
8 any later version. | |
9 | |
10 This program is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 GNU General Public License for more details. | |
14 | |
15 You should have received a copy of the GNU General Public License | |
16 along with this program; if not, write to the Free Software Foundation, | |
17 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
18 | |
19 #ifdef HAVE_CONFIG_H | |
20 #include "config.h" | |
21 #endif | |
22 | |
23 #ifdef HAVE_STRING_H | |
24 #include <string.h> | |
25 #endif | |
26 | |
27 #include "filenames.h" | |
28 #include "safe-ctype.h" | |
29 | |
30 /* | |
31 | |
32 @deftypefn Extension int filename_cmp (const char *@var{s1}, const char *@var{s2}) | |
33 | |
34 Return zero if the two file names @var{s1} and @var{s2} are equivalent. | |
35 If not equivalent, the returned value is similar to what @code{strcmp} | |
36 would return. In other words, it returns a negative value if @var{s1} | |
37 is less than @var{s2}, or a positive value if @var{s2} is greater than | |
38 @var{s2}. | |
39 | |
40 This function does not normalize file names. As a result, this function | |
41 will treat filenames that are spelled differently as different even in | |
42 the case when the two filenames point to the same underlying file. | |
43 However, it does handle the fact that on DOS-like file systems, forward | |
44 and backward slashes are equal. | |
45 | |
46 @end deftypefn | |
47 | |
48 */ | |
49 | |
50 int | |
51 filename_cmp (const char *s1, const char *s2) | |
52 { | |
53 #ifndef HAVE_DOS_BASED_FILE_SYSTEM | |
54 return strcmp(s1, s2); | |
55 #else | |
56 for (;;) | |
57 { | |
58 int c1 = TOLOWER (*s1); | |
59 int c2 = TOLOWER (*s2); | |
60 | |
61 /* On DOS-based file systems, the '/' and the '\' are equivalent. */ | |
62 if (c1 == '/') | |
63 c1 = '\\'; | |
64 if (c2 == '/') | |
65 c2 = '\\'; | |
66 | |
67 if (c1 != c2) | |
68 return (c1 - c2); | |
69 | |
70 if (c1 == '\0') | |
71 return 0; | |
72 | |
73 s1++; | |
74 s2++; | |
75 } | |
76 #endif | |
77 } | |
78 |