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/* path/match.c - Filename matching utility.
* Copyright (C) 2001 Bruce Guenter <bruceg@em.ca>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <string.h>
#include "direntry.h"
#include "str/str.h"
#include "str/iter.h"
#include "path.h"
static str tmp;
static int match_first(int absolute, const str* part, str* result,
unsigned options)
{
DIR* dir;
direntry* entry;
int count = 0;
if (!str_truncate(result, 0)) return -1;
if ((dir = opendir(absolute ? "/" : ".")) == 0) return -1;
while ((entry = readdir(dir)) != 0) {
if (fnmatch(entry->d_name, part->s, options)) {
if (absolute) if (!str_catc(result, '/')) return -1;
if (!str_catb(result, entry->d_name, strlen(entry->d_name)+1)) return -1;
++count;
}
}
closedir(dir);
return count;
}
static int match_next(const str* part, str* result, unsigned options)
{
DIR* dir;
direntry* entry;
striter path;
int count = 0;
if (!str_copy(&tmp, result)) return -1;
if (!str_truncate(result, 0)) return -1;
striter_loop(&path, &tmp, 0) {
if ((dir = opendir(path.startptr)) == 0) continue;
while ((entry = readdir(dir)) != 0) {
if (fnmatch(entry->d_name, part->s, options)) {
if (!str_cats(result, path.startptr) ||
!str_catc(result, '/') ||
!str_catb(result, entry->d_name, strlen(entry->d_name)+1)) {
closedir(dir);
return -1;
}
++count;
}
}
closedir(dir);
}
return count;
}
int path_match(const char* pattern, str* result, unsigned options)
{
static str part;
int count;
const char* patend;
int absolute;
const char* partend;
absolute = pattern[0] == '/';
patend = pattern + strlen(pattern);
/* Note and skip any leading slashes */
while (pattern < patend && *pattern == '/') ++pattern;
if ((partend = strchr(pattern, '/')) == 0) partend = patend;
if (!str_copyb(&part, pattern, partend-pattern)) return -1;
if ((count = match_first(absolute, &part, result, options)) == -1) return -1;
for (;;) {
pattern = partend + 1;
while (pattern < patend && *pattern == '/') ++pattern;
if (pattern > patend) break;
if ((partend = strchr(pattern, '/')) == 0) partend = patend;
if (!str_copyb(&part, pattern, partend-pattern)) return -1;
if ((count = match_next(&part, result, options)) == -1) return -1;
}
if (!str_sort(result, 0, count)) return -1;
return count;
}
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