1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
/*
* Parse a string block size specification. This is approximately a
* subset of the block size specs supported by GNU fileutils:
* "nk" = n kilobytes
* "nM" = n megabytes
* "nG" = n gigabytes
* All numbers are decimal, and suffixes refer to powers of two.
* Case-insensitive.
*/
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "defs.h"
#include "misc.h"
unsigned long parse_blocksize(const char *bs)
{
char *suf;
unsigned long r = strtoul(bs, &suf, 10);
if (*suf != '\0') {
while (*suf && isspace((unsigned char)*suf)) suf++;
switch (*suf) {
case 'k': case 'K':
r *= 1024ul;
break;
case 'm': case 'M':
r *= 1024ul * 1024ul;
break;
case 'g': case 'G':
r *= 1024ul * 1024ul * 1024ul;
break;
case '\0':
default:
break;
}
}
return r;
}
|
