1 /* $NetBSD: dehumanize_number.c,v 1.3 2008/04/28 20:22:59 martin Exp $ */
4 * Copyright (c) 2005, 2006 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Julio M. Merino Vidal, developed as part of Google's Summer of Code
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
42 * Converts the number given in 'str', which may be given in a humanized
43 * form (as described in humanize_number(3), but with some limitations),
44 * to an int64_t without units.
45 * In case of success, 0 is returned and *size holds the value.
46 * Otherwise, -1 is returned and *size is untouched.
48 * TODO: Internationalization, SI units.
51 dehumanize_number(const char *str, int64_t *size)
68 if (isalpha((unsigned char)unit)) {
69 switch (tolower((unsigned char)unit)) {
93 return -1; /* Invalid suffix. */
96 delimit = &str[len - 1];
101 tmp = strtoll(str, &ep, 10);
102 if (str[0] == '\0' || (ep != delimit && *ep != '\0'))
103 return -1; /* Not a number. */
104 else if (errno == ERANGE && (tmp == LLONG_MAX || tmp == LLONG_MIN))
105 return -1; /* Out of range. */
107 tmp2 = tmp * multiplier;
108 tmp2 = tmp2 / multiplier;
111 return -1; /* Out of range. */
113 *size = tmp * multiplier;