mirror of
git://sourceware.org/git/lvm2.git
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144 lines
2.8 KiB
C
144 lines
2.8 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License v.2.
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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 Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "matcher.h"
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#include "log.h"
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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static int _read_spec(const char *file, char ***regex, int *nregex)
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{
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char buffer[1024], *start, *ptr;
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FILE *fp = fopen(file, "r");
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int asize = 100;
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char **rx = dbg_malloc(sizeof(*rx) * asize);
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int nr = 0;
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if (!fp)
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return 0;
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while (fgets(buffer, sizeof(buffer),fp)) {
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/* trim leading whitespace */
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for (ptr = buffer; *ptr && isspace((int) *ptr); ptr++);
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if (!*ptr || *ptr == '#')
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continue;
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if (*ptr == '\"') {
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ptr++;
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start = ptr;
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while (*ptr && *ptr != '\"') {
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if (*ptr == '\\')
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ptr++;
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ptr++;
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}
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if (!*ptr) {
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fprintf(stderr, "Formatting error : "
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"No terminating quote\n");
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return 0;
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}
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rx[nr] = dbg_malloc((ptr - start) + 1);
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strncpy(rx[nr], start, ptr - start);
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rx[nr][ptr - start] = '\0';
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nr++;
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} else {
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fprintf(stderr, "%s", ptr);
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fprintf(stderr, "Formatting error : \"<regex>\" "
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"<token_name>\n");
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return 0;
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}
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}
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*regex = rx;
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*nregex = nr;
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return 1;
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}
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static void _free_regex(char **regex, int nregex)
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{
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int i;
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for (i = 0; i < nregex; i++)
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dbg_free(regex[i]);
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dbg_free(regex);
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}
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static void _scan_input(struct matcher *m, char **regex)
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{
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char buffer[256], *ptr;
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int r;
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while (fgets(buffer, sizeof(buffer), stdin)) {
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if ((ptr = strchr(buffer, '\n')))
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*ptr = '\0';
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r = matcher_run(m, buffer);
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if (r >= 0)
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printf("%s : %s\n", buffer, regex[r]);
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}
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}
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int main(int argc, char **argv)
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{
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struct dm_pool *mem;
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struct matcher *scanner;
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char **regex;
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int nregex;
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if (argc < 2) {
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fprintf(stderr, "Usage : %s <pattern_file>\n", argv[0]);
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exit(1);
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}
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init_log(stderr);
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init_debug(_LOG_DEBUG);
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if (!(mem = dm_pool_create(10 * 1024))) {
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fprintf(stderr, "Couldn't create pool\n");
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exit(2);
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}
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if (!_read_spec(argv[1], ®ex, &nregex)) {
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fprintf(stderr, "Couldn't read the lex specification\n");
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exit(3);
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}
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if (!(scanner = matcher_create(mem, (const char **) regex, nregex))) {
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fprintf(stderr, "Couldn't build the lexer\n");
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exit(4);
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}
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_scan_input(scanner, regex);
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_free_regex(regex, nregex);
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dm_pool_destroy(mem);
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dump_memory();
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fin_log();
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return 0;
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}
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