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141 lines
3.0 KiB
C
141 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) tons of folks. Tracking down who wrote what
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* isn't something I'm going to worry about... If you wrote something
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* here, please feel free to acknowledge your work.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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* Permission has been granted to redistribute this code under the GPL.
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*
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*/
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#include <stdio.h>
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#include "libbb.h"
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/*
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* Routine to see if a text string is matched by a wildcard pattern.
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* Returns TRUE if the text is matched, or FALSE if it is not matched
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* or if the pattern is invalid.
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* * matches zero or more characters
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* ? matches a single character
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* [abc] matches 'a', 'b' or 'c'
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* \c quotes character c
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* Adapted from code written by Ingo Wilken, and
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* then taken from sash, Copyright (c) 1999 by David I. Bell
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* Permission is granted to use, distribute, or modify this source,
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* provided that this copyright notice remains intact.
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* Permission to distribute this code under the GPL has been granted.
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*/
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extern int check_wildcard_match(const char *text, const char *pattern)
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{
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const char *retryPat;
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const char *retryText;
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int ch;
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int found;
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int len;
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retryPat = NULL;
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retryText = NULL;
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while (*text || *pattern) {
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ch = *pattern++;
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switch (ch) {
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case '*':
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retryPat = pattern;
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retryText = text;
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break;
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case '[':
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found = FALSE;
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while ((ch = *pattern++) != ']') {
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if (ch == '\\')
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ch = *pattern++;
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if (ch == '\0')
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return FALSE;
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if (*text == ch)
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found = TRUE;
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}
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len=strlen(text);
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if (found == FALSE && len!=0) {
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return FALSE;
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}
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if (found == TRUE) {
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if (strlen(pattern)==0 && len==1) {
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return TRUE;
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}
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if (len!=0) {
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text++;
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continue;
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}
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}
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/* fall into next case */
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case '?':
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if (*text++ == '\0')
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return FALSE;
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break;
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case '\\':
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ch = *pattern++;
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if (ch == '\0')
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return FALSE;
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/* fall into next case */
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default:
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if (*text == ch) {
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if (*text)
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text++;
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break;
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}
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if (*text) {
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pattern = retryPat;
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text = ++retryText;
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break;
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}
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return FALSE;
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}
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if (pattern == NULL)
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return FALSE;
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}
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return TRUE;
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}
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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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