Last change
on this file since 3810 was 1765, checked in by Bruno Cornec, 17 years ago |
Update to busybox 1.7.2
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-
Property svn:eol-style
set to
native
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File size:
1.0 KB
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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * parse_num.c - Parse the number of blocks
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4 | *
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5 | * Copyright (C) 2004,2005 Theodore Ts'o <tytso@mit.edu>
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6 | *
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7 | * This file can be redistributed under the terms of the GNU Library General
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8 | * Public License
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9 | */
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10 |
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11 | #include "e2p.h"
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12 |
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13 | #include <stdlib.h>
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14 |
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15 | unsigned long parse_num_blocks(const char *arg, int log_block_size)
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16 | {
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17 | char *p;
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18 | unsigned long long num;
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19 |
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20 | num = strtoull(arg, &p, 0);
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21 |
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22 | if (p[0] && p[1])
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23 | return 0;
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24 |
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25 | switch (*p) { /* Using fall-through logic */
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26 | case 'T': case 't':
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27 | num <<= 10;
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28 | case 'G': case 'g':
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29 | num <<= 10;
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30 | case 'M': case 'm':
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31 | num <<= 10;
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32 | case 'K': case 'k':
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33 | num >>= log_block_size;
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34 | break;
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35 | case 's':
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36 | num >>= 1;
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37 | break;
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38 | case '\0':
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39 | break;
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40 | default:
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41 | return 0;
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42 | }
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43 | return num;
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44 | }
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45 |
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46 | #ifdef DEBUG
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47 | #include <unistd.h>
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48 | #include <stdio.h>
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49 |
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50 | main(int argc, char **argv)
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51 | {
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52 | unsigned long num;
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53 | int log_block_size = 0;
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54 |
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55 | if (argc != 2) {
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56 | fprintf(stderr, "Usage: %s arg\n", argv[0]);
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57 | exit(1);
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58 | }
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59 |
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60 | num = parse_num_blocks(argv[1], log_block_size);
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61 |
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62 | printf("Parsed number: %lu\n", num);
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63 | exit(0);
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64 | }
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65 | #endif
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