Mercurial > hg > CbC > CbC_gcc
annotate libiberty/filename_cmp.c @ 72:20c18990c3e4
merge gcc/c-typeck.c
author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
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date | Sun, 21 Aug 2011 22:22:32 +0900 |
parents | f6334be47118 |
children | 04ced10e8804 |
rev | line source |
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0 | 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 | |
67
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79 /* |
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80 |
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81 @deftypefn Extension int filename_ncmp (const char *@var{s1}, const char *@var{s2}, size_t @var{n}) |
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82 |
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83 Return zero if the two file names @var{s1} and @var{s2} are equivalent |
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84 in range @var{n}. |
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85 If not equivalent, the returned value is similar to what @code{strncmp} |
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86 would return. In other words, it returns a negative value if @var{s1} |
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87 is less than @var{s2}, or a positive value if @var{s2} is greater than |
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88 @var{s2}. |
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89 |
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90 This function does not normalize file names. As a result, this function |
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91 will treat filenames that are spelled differently as different even in |
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92 the case when the two filenames point to the same underlying file. |
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93 However, it does handle the fact that on DOS-like file systems, forward |
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94 and backward slashes are equal. |
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95 |
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96 @end deftypefn |
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97 |
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98 */ |
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99 |
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100 int |
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101 filename_ncmp (const char *s1, const char *s2, size_t n) |
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102 { |
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103 #ifndef HAVE_DOS_BASED_FILE_SYSTEM |
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104 return strncmp(s1, s2, n); |
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105 #else |
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106 if (!n) |
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107 return 0; |
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108 for (; n > 0; --n) |
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109 { |
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110 int c1 = TOLOWER (*s1); |
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111 int c2 = TOLOWER (*s2); |
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112 |
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113 /* On DOS-based file systems, the '/' and the '\' are equivalent. */ |
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114 if (c1 == '/') |
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115 c1 = '\\'; |
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116 if (c2 == '/') |
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117 c2 = '\\'; |
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118 |
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119 if (c1 == '\0' || c1 != c2) |
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120 return (c1 - c2); |
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121 |
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122 s1++; |
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123 s2++; |
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124 } |
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125 return 0; |
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126 #endif |
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127 } |