mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
0fad905483
These two old-test/regex utils are usable for testing output of regex processing at core level. For getting them usable configure need to create Makefile. This is currently disable by default.
146 lines
2.9 KiB
C
146 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License v.2.
|
|
*
|
|
* 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 "libdevmapper.h"
|
|
#include "log.h"
|
|
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/mman.h>
|
|
|
|
|
|
static int _read_spec(const char *file, char ***regex, int *nregex)
|
|
{
|
|
char buffer[1024], *start, *ptr;
|
|
FILE *fp = fopen(file, "r");
|
|
int asize = 100;
|
|
char **rx = dm_malloc(sizeof(*rx) * asize);
|
|
int nr = 0;
|
|
|
|
if (!fp)
|
|
return 0;
|
|
|
|
while (fgets(buffer, sizeof(buffer),fp)) {
|
|
|
|
/* trim leading whitespace */
|
|
for (ptr = buffer; *ptr && isspace((int) *ptr); ptr++);
|
|
|
|
if (!*ptr || *ptr == '#')
|
|
continue;
|
|
|
|
if (*ptr == '\"') {
|
|
ptr++;
|
|
start = ptr;
|
|
while (*ptr && *ptr != '\"') {
|
|
if (*ptr == '\\')
|
|
ptr++;
|
|
ptr++;
|
|
}
|
|
|
|
if (!*ptr) {
|
|
fprintf(stderr, "Formatting error : "
|
|
"No terminating quote\n");
|
|
return 0;
|
|
}
|
|
|
|
rx[nr] = dm_malloc((ptr - start) + 1);
|
|
strncpy(rx[nr], start, ptr - start);
|
|
rx[nr][ptr - start] = '\0';
|
|
nr++;
|
|
} else {
|
|
fprintf(stderr, "%s", ptr);
|
|
fprintf(stderr, "Formatting error : \"<regex>\" "
|
|
"<token_name>\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
*regex = rx;
|
|
*nregex = nr;
|
|
return 1;
|
|
}
|
|
|
|
static void _free_regex(char **regex, int nregex)
|
|
{
|
|
int i;
|
|
for (i = 0; i < nregex; i++)
|
|
dm_free(regex[i]);
|
|
|
|
dm_free(regex);
|
|
}
|
|
|
|
static void _scan_input(struct dm_regex *m, char **regex)
|
|
{
|
|
char buffer[256], *ptr;
|
|
int r;
|
|
|
|
while (fgets(buffer, sizeof(buffer), stdin)) {
|
|
if ((ptr = strchr(buffer, '\n')))
|
|
*ptr = '\0';
|
|
|
|
r = dm_regex_match(m, buffer);
|
|
|
|
if (r >= 0)
|
|
printf("%s : %s\n", buffer, regex[r]);
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct dm_pool *mem;
|
|
struct dm_regex *scanner;
|
|
char **regex;
|
|
int nregex;
|
|
int ret = 0;
|
|
|
|
if (argc < 2) {
|
|
fprintf(stderr, "Usage : %s <pattern_file>\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
dm_log_init_verbose(_LOG_DEBUG);
|
|
|
|
if (!(mem = dm_pool_create("match_regex", 10 * 1024))) {
|
|
fprintf(stderr, "Couldn't create pool\n");
|
|
ret = 2;
|
|
goto err;
|
|
}
|
|
|
|
if (!_read_spec(argv[1], ®ex, &nregex)) {
|
|
fprintf(stderr, "Couldn't read the lex specification\n");
|
|
ret = 3;
|
|
goto err;
|
|
}
|
|
|
|
if (!(scanner = dm_regex_create(mem, (const char **)regex, nregex))) {
|
|
fprintf(stderr, "Couldn't build the lexer\n");
|
|
ret = 4;
|
|
goto err;
|
|
}
|
|
|
|
_scan_input(scanner, regex);
|
|
_free_regex(regex, nregex);
|
|
|
|
err:
|
|
dm_pool_destroy(mem);
|
|
|
|
return ret;
|
|
}
|