mirror of
https://github.com/sheumann/hush.git
synced 2024-12-27 01:32:08 +00:00
65 lines
1.0 KiB
C
65 lines
1.0 KiB
C
/*
|
|
* parse_num.c - Parse the number of blocks
|
|
*
|
|
* Copyright (C) 2004,2005 Theodore Ts'o <tytso@mit.edu>
|
|
*
|
|
* This file can be redistributed under the terms of the GNU Library General
|
|
* Public License
|
|
*/
|
|
|
|
#include "e2p.h"
|
|
|
|
#include <stdlib.h>
|
|
|
|
unsigned long parse_num_blocks(const char *arg, int log_block_size)
|
|
{
|
|
char *p;
|
|
unsigned long long num;
|
|
|
|
num = strtoull(arg, &p, 0);
|
|
|
|
if (p[0] && p[1])
|
|
return 0;
|
|
|
|
switch (*p) { /* Using fall-through logic */
|
|
case 'T': case 't':
|
|
num <<= 10;
|
|
case 'G': case 'g':
|
|
num <<= 10;
|
|
case 'M': case 'm':
|
|
num <<= 10;
|
|
case 'K': case 'k':
|
|
num >>= log_block_size;
|
|
break;
|
|
case 's':
|
|
num >>= 1;
|
|
break;
|
|
case '\0':
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
return num;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
|
|
main(int argc, char **argv)
|
|
{
|
|
unsigned long num;
|
|
int log_block_size = 0;
|
|
|
|
if (argc != 2) {
|
|
fprintf(stderr, "Usage: %s arg\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
num = parse_num_blocks(argv[1], log_block_size);
|
|
|
|
printf("Parsed number: %lu\n", num);
|
|
exit(0);
|
|
}
|
|
#endif
|