1/***
2  This file is part of PulseAudio.
3
4  Copyright 2004-2006 Lennart Poettering
5
6  PulseAudio is free software; you can redistribute it and/or modify
7  it under the terms of the GNU Lesser General Public License as published
8  by the Free Software Foundation; either version 2.1 of the License,
9  or (at your option) any later version.
10
11  PulseAudio is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  General Public License for more details.
15
16  You should have received a copy of the GNU Lesser General Public License
17  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18***/
19
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24#include <string.h>
25#include <stdlib.h>
26
27#include <pulse/xmalloc.h>
28
29#include <pulsecore/dynarray.h>
30#include <pulsecore/macro.h>
31
32#include "tokenizer.h"
33
34static void parse(pa_dynarray*a, const char *s, unsigned args) {
35    int infty = 0;
36    const char delimiter[] = " \t\n\r";
37    const char *p;
38
39    pa_assert(a);
40    pa_assert(s);
41
42    if (args == 0)
43        infty = 1;
44
45    p = s+strspn(s, delimiter);
46    while (*p && (infty || args >= 2)) {
47        size_t l = strcspn(p, delimiter);
48        char *n = pa_xstrndup(p, l);
49        pa_dynarray_append(a, n);
50        p += l;
51        p += strspn(p, delimiter);
52        args--;
53    }
54
55    if (args && *p) {
56        char *n = pa_xstrdup(p);
57        pa_dynarray_append(a, n);
58    }
59}
60
61pa_tokenizer* pa_tokenizer_new(const char *s, unsigned args) {
62    pa_dynarray *a;
63
64    a = pa_dynarray_new(pa_xfree);
65    parse(a, s, args);
66    return (pa_tokenizer*) a;
67}
68
69void pa_tokenizer_free(pa_tokenizer *t) {
70    pa_dynarray *a = (pa_dynarray*) t;
71
72    pa_assert(a);
73    pa_dynarray_free(a);
74}
75
76const char *pa_tokenizer_get(pa_tokenizer *t, unsigned i) {
77    pa_dynarray *a = (pa_dynarray*) t;
78
79    pa_assert(a);
80
81    return pa_dynarray_get(a, i);
82}
83