Mercurial > hg > CbC > CbC_gcc

annotate libiberty/filename_cmp.c @ 108:7ad14f446135

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add CbC-example/rectypeTest/
author Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp>
date Thu, 14 Jun 2012 20:30:24 +0900
parents f6334be47118
children 04ced10e8804
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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1 /* File name comparison routine.
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2
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3 Copyright (C) 2007 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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6 it under the terms of the GNU General Public License as published by
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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7 the Free Software Foundation; either version 2, or (at your option)
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software Foundation,
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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17 Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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18
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19 #ifdef HAVE_CONFIG_H
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20 #include "config.h"
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21 #endif
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22
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23 #ifdef HAVE_STRING_H
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24 #include <string.h>
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25 #endif
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26
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27 #include "filenames.h"
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28 #include "safe-ctype.h"
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29
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30 /*
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31
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32 @deftypefn Extension int filename_cmp (const char *@var{s1}, const char *@var{s2})
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33
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34 Return zero if the two file names @var{s1} and @var{s2} are equivalent.
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35 If not equivalent, the returned value is similar to what @code{strcmp}
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36 would return. In other words, it returns a negative value if @var{s1}
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37 is less than @var{s2}, or a positive value if @var{s2} is greater than
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38 @var{s2}.
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39
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40 This function does not normalize file names. As a result, this function
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41 will treat filenames that are spelled differently as different even in
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42 the case when the two filenames point to the same underlying file.
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43 However, it does handle the fact that on DOS-like file systems, forward
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44 and backward slashes are equal.
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45
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46 @end deftypefn
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47
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48 */
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49
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50 int
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51 filename_cmp (const char *s1, const char *s2)
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52 {
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53 #ifndef HAVE_DOS_BASED_FILE_SYSTEM
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54 return strcmp(s1, s2);
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55 #else
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56 for (;;)
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57 {
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58 int c1 = TOLOWER (*s1);
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59 int c2 = TOLOWER (*s2);
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60
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61 /* On DOS-based file systems, the '/' and the '\' are equivalent. */
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62 if (c1 == '/')
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63 c1 = '\\';
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64 if (c2 == '/')
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65 c2 = '\\';
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66
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67 if (c1 != c2)
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68 return (c1 - c2);
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69
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70 if (c1 == '\0')
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71 return 0;
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72
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73 s1++;
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74 s2++;
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75 }
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76 #endif
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77 }
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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 }