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comparison splitargv.c @ 20:76a6bad110e2

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Add routine to split string into argv/argc
author Daniel O'Connor <darius@dons.net.au>
date Sat, 31 Jan 2015 23:30:35 +1030
parents
children 01e77066f72b
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19:b5e4591b6570 20:76a6bad110e2
1 /*
2 * Split string to argv
3 *
4 * Copyright (c) 2015
5 * Daniel O'Connor <darius@dons.net.au>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <string.h>
30
31 /* Split command string on space/tab boundaries into argv/argc
32 *
33 * Ignore the first 'skip' parameters.
34 * If maxargs is exceeded return 1 otherwise 0
35 *
36 * TODO: handle escape chars
37 */
38 int
39 splitargv(char *buf, unsigned skip, char *argv[], unsigned maxargs, int *argc) {
40 char **btmp;
41
42 *argc = 0;
43 btmp = &buf;
44 while (1) {
45 argv[*argc] = strsep(btmp, " \t");
46 if (argv[*argc] == '\0')
47 break;
48 /* Skip arg(s) if necessary */
49 if (skip) {
50 skip--;
51 continue;
52 }
53 (*argc)++;
54 if (*argc == maxargs)
55 return 1;
56 }
57
58 return 0;
59 }
60