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1 /* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
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2
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3 NOTE: This source is derived from an old version taken from the GNU C
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4 Library (glibc).
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5
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6 This program is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program; if not, write to the Free Software
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18 Foundation, 51 Franklin Street - Fifth Floor,
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19 Boston, MA 02110-1301, USA. */
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20
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21 #ifdef HAVE_CONFIG_H
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22 #if defined (CONFIG_BROKETS)
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23 /* We use <config.h> instead of "config.h" so that a compilation
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24 using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
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25 (which it would do because it found this file in $srcdir). */
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26 #include <config.h>
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27 #else
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28 #include "config.h"
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29 #endif
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30 #endif
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31
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32
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33 #ifndef _GNU_SOURCE
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34 #define _GNU_SOURCE
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35 #endif
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36
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37 /* This code to undef const added in libiberty. */
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38 #ifndef __STDC__
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39 /* This is a separate conditional since some stdc systems
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40 reject `defined (const)'. */
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41 #ifndef const
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42 #define const
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43 #endif
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44 #endif
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45
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46 #include <errno.h>
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47 #include <fnmatch.h>
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48 #include <safe-ctype.h>
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49
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50 /* Comment out all this code if we are using the GNU C Library, and are not
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51 actually compiling the library itself. This code is part of the GNU C
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52 Library, but also included in many other GNU distributions. Compiling
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53 and linking in this code is a waste when using the GNU C library
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54 (especially if it is a shared library). Rather than having every GNU
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55 program understand `configure --with-gnu-libc' and omit the object files,
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56 it is simpler to just do this in the source for each such file. */
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57
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58 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
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59
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60
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61 #if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS)
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62 extern int errno;
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63 #endif
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64
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65 /* Match STRING against the filename pattern PATTERN, returning zero if
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66 it matches, nonzero if not. */
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67 int
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68 fnmatch (const char *pattern, const char *string, int flags)
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69 {
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70 register const char *p = pattern, *n = string;
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71 register unsigned char c;
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72
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73 #define FOLD(c) ((flags & FNM_CASEFOLD) ? TOLOWER (c) : (c))
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74
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75 while ((c = *p++) != '\0')
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76 {
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77 c = FOLD (c);
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78
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79 switch (c)
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80 {
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81 case '?':
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82 if (*n == '\0')
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83 return FNM_NOMATCH;
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84 else if ((flags & FNM_FILE_NAME) && *n == '/')
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85 return FNM_NOMATCH;
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86 else if ((flags & FNM_PERIOD) && *n == '.' &&
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87 (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
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88 return FNM_NOMATCH;
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89 break;
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90
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91 case '\\':
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92 if (!(flags & FNM_NOESCAPE))
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93 {
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94 c = *p++;
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95 c = FOLD (c);
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96 }
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97 if (FOLD ((unsigned char)*n) != c)
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98 return FNM_NOMATCH;
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99 break;
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100
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101 case '*':
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102 if ((flags & FNM_PERIOD) && *n == '.' &&
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103 (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
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104 return FNM_NOMATCH;
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105
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106 for (c = *p++; c == '?' || c == '*'; c = *p++, ++n)
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107 if (((flags & FNM_FILE_NAME) && *n == '/') ||
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108 (c == '?' && *n == '\0'))
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109 return FNM_NOMATCH;
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110
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111 if (c == '\0')
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112 return 0;
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113
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114 {
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115 unsigned char c1 = (!(flags & FNM_NOESCAPE) && c == '\\') ? *p : c;
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116 c1 = FOLD (c1);
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117 for (--p; *n != '\0'; ++n)
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118 if ((c == '[' || FOLD ((unsigned char)*n) == c1) &&
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119 fnmatch (p, n, flags & ~FNM_PERIOD) == 0)
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120 return 0;
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121 return FNM_NOMATCH;
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122 }
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123
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124 case '[':
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125 {
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126 /* Nonzero if the sense of the character class is inverted. */
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127 register int negate;
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128
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129 if (*n == '\0')
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130 return FNM_NOMATCH;
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131
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132 if ((flags & FNM_PERIOD) && *n == '.' &&
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133 (n == string || ((flags & FNM_FILE_NAME) && n[-1] == '/')))
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134 return FNM_NOMATCH;
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135
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136 negate = (*p == '!' || *p == '^');
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137 if (negate)
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138 ++p;
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139
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140 c = *p++;
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141 for (;;)
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142 {
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143 register unsigned char cstart = c, cend = c;
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144
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145 if (!(flags & FNM_NOESCAPE) && c == '\\')
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146 cstart = cend = *p++;
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147
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148 cstart = cend = FOLD (cstart);
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149
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150 if (c == '\0')
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151 /* [ (unterminated) loses. */
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152 return FNM_NOMATCH;
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153
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154 c = *p++;
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155 c = FOLD (c);
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156
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157 if ((flags & FNM_FILE_NAME) && c == '/')
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158 /* [/] can never match. */
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159 return FNM_NOMATCH;
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160
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161 if (c == '-' && *p != ']')
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162 {
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163 cend = *p++;
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164 if (!(flags & FNM_NOESCAPE) && cend == '\\')
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165 cend = *p++;
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166 if (cend == '\0')
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167 return FNM_NOMATCH;
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168 cend = FOLD (cend);
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169
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170 c = *p++;
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171 }
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172
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173 if (FOLD ((unsigned char)*n) >= cstart
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174 && FOLD ((unsigned char)*n) <= cend)
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175 goto matched;
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176
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177 if (c == ']')
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178 break;
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179 }
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180 if (!negate)
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181 return FNM_NOMATCH;
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182 break;
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183
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184 matched:;
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185 /* Skip the rest of the [...] that already matched. */
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186 while (c != ']')
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187 {
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188 if (c == '\0')
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189 /* [... (unterminated) loses. */
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190 return FNM_NOMATCH;
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191
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192 c = *p++;
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193 if (!(flags & FNM_NOESCAPE) && c == '\\')
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194 /* XXX 1003.2d11 is unclear if this is right. */
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195 ++p;
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196 }
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197 if (negate)
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198 return FNM_NOMATCH;
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199 }
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200 break;
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201
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202 default:
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203 if (c != FOLD ((unsigned char)*n))
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204 return FNM_NOMATCH;
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205 }
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206
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207 ++n;
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208 }
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209
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210 if (*n == '\0')
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211 return 0;
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212
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213 if ((flags & FNM_LEADING_DIR) && *n == '/')
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214 /* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */
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215 return 0;
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216
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217 return FNM_NOMATCH;
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218 }
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219
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220 #endif /* _LIBC or not __GNU_LIBRARY__. */
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