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/*
* cno.c - NILFS checkpoint number parser
*
* Copyright (C) 2009 Nippon Telegraph and Telephone Corporation.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Written by Ryusuke Konishi <ryusuke@osrg.net>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include <stdio.h>
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif /* HAVE_STDLIB_H */
#if HAVE_STRING_H
#include <string.h>
#endif /* HAVE_STRING_H */
#include <assert.h>
#include "nilfs.h"
int nilfs_parse_cno_range(const char *arg, nilfs_cno_t *start,
nilfs_cno_t *end, int base)
{
const char *delim;
char *endptr;
nilfs_cno_t cno, cno2;
assert(arg && *arg != '\0');
delim = strstr(arg, "..");
if (delim && delim == arg) {
if (arg[2] != '\0') {
/* ..yyy */
cno = strtoull(arg + 2, &endptr, base);
if (*endptr == '\0') {
/* ..CNO */
*start = NILFS_CNO_MIN;
*end = cno;
return 0;
}
}
} else if (!delim) {
/* xxx */
cno = strtoull(arg, &endptr, base);
if (*endptr == '\0') {
/* CNO */
*start = *end = cno;
return 0;
}
} else {
/* xxx..yyy */
cno = strtoull(arg, &endptr, base);
if (endptr == delim) {
if (delim[2] == '\0') {
/* CNO.. */
*start = cno;
*end = NILFS_CNO_MAX;
return 0;
}
cno2 = strtoull(delim + 2, &endptr, base);
if (*endptr == '\0') {
/* CNO..CNO */
*start = cno;
*end = cno2;
return 0;
}
}
}
return -1; /* parse error */
}
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