| Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Utility routines. |
| 4 | * |
| 5 | * Copyright (C) tons of folks. Tracking down who wrote what |
| 6 | * isn't something I'm going to worry about... If you wrote something |
| 7 | * here, please feel free to acknowledge your work. |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | * Based in part on code from sash, Copyright (c) 1999 by David I. Bell |
| 24 | * Permission has been granted to redistribute this code under the GPL. |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <stdio.h> |
| Eric Andersen | 08ff8a4 | 2001-03-23 17:02:05 +0000 | [diff] [blame] | 29 | #include <string.h> |
| Eric Andersen | aad1a88 | 2001-03-16 22:47:14 +0000 | [diff] [blame] | 30 | #include "libbb.h" |
| 31 | |
| 32 | |
| 33 | /* |
| 34 | * Routine to see if a text string is matched by a wildcard pattern. |
| 35 | * Returns TRUE if the text is matched, or FALSE if it is not matched |
| 36 | * or if the pattern is invalid. |
| 37 | * * matches zero or more characters |
| 38 | * ? matches a single character |
| 39 | * [abc] matches 'a', 'b' or 'c' |
| 40 | * \c quotes character c |
| 41 | * Adapted from code written by Ingo Wilken, and |
| 42 | * then taken from sash, Copyright (c) 1999 by David I. Bell |
| 43 | * Permission is granted to use, distribute, or modify this source, |
| 44 | * provided that this copyright notice remains intact. |
| 45 | * Permission to distribute this code under the GPL has been granted. |
| 46 | */ |
| 47 | extern int check_wildcard_match(const char *text, const char *pattern) |
| 48 | { |
| 49 | const char *retryPat; |
| 50 | const char *retryText; |
| 51 | int ch; |
| 52 | int found; |
| 53 | int len; |
| 54 | |
| 55 | retryPat = NULL; |
| 56 | retryText = NULL; |
| 57 | |
| 58 | while (*text || *pattern) { |
| 59 | ch = *pattern++; |
| 60 | |
| 61 | switch (ch) { |
| 62 | case '*': |
| 63 | retryPat = pattern; |
| 64 | retryText = text; |
| 65 | break; |
| 66 | |
| 67 | case '[': |
| 68 | found = FALSE; |
| 69 | |
| 70 | while ((ch = *pattern++) != ']') { |
| 71 | if (ch == '\\') |
| 72 | ch = *pattern++; |
| 73 | |
| 74 | if (ch == '\0') |
| 75 | return FALSE; |
| 76 | |
| 77 | if (*text == ch) |
| 78 | found = TRUE; |
| 79 | } |
| 80 | len=strlen(text); |
| 81 | if (found == FALSE && len!=0) { |
| 82 | return FALSE; |
| 83 | } |
| 84 | if (found == TRUE) { |
| 85 | if (strlen(pattern)==0 && len==1) { |
| 86 | return TRUE; |
| 87 | } |
| 88 | if (len!=0) { |
| 89 | text++; |
| 90 | continue; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | /* fall into next case */ |
| 95 | |
| 96 | case '?': |
| 97 | if (*text++ == '\0') |
| 98 | return FALSE; |
| 99 | |
| 100 | break; |
| 101 | |
| 102 | case '\\': |
| 103 | ch = *pattern++; |
| 104 | |
| 105 | if (ch == '\0') |
| 106 | return FALSE; |
| 107 | |
| 108 | /* fall into next case */ |
| 109 | |
| 110 | default: |
| 111 | if (*text == ch) { |
| 112 | if (*text) |
| 113 | text++; |
| 114 | break; |
| 115 | } |
| 116 | |
| 117 | if (*text) { |
| 118 | pattern = retryPat; |
| 119 | text = ++retryText; |
| 120 | break; |
| 121 | } |
| 122 | |
| 123 | return FALSE; |
| 124 | } |
| 125 | |
| 126 | if (pattern == NULL) |
| 127 | return FALSE; |
| 128 | } |
| 129 | |
| 130 | return TRUE; |
| 131 | } |
| 132 | |
| 133 | |
| 134 | /* END CODE */ |
| 135 | /* |
| 136 | Local Variables: |
| 137 | c-file-style: "linux" |
| 138 | c-basic-offset: 4 |
| 139 | tab-width: 4 |
| 140 | End: |
| 141 | */ |