argv-array: add pop function
[git/git.git] / argv-array.c
CommitLineData
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1#include "cache.h"
2#include "argv-array.h"
3#include "strbuf.h"
4
fd93d2e6 5const char *empty_argv[] = { NULL };
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6
7void argv_array_init(struct argv_array *array)
8{
9 array->argv = empty_argv;
10 array->argc = 0;
11 array->alloc = 0;
12}
13
14static void argv_array_push_nodup(struct argv_array *array, const char *value)
15{
16 if (array->argv == empty_argv)
17 array->argv = NULL;
18
19 ALLOC_GROW(array->argv, array->argc + 2, array->alloc);
20 array->argv[array->argc++] = value;
21 array->argv[array->argc] = NULL;
22}
23
24void argv_array_push(struct argv_array *array, const char *value)
25{
26 argv_array_push_nodup(array, xstrdup(value));
27}
28
29void argv_array_pushf(struct argv_array *array, const char *fmt, ...)
30{
31 va_list ap;
32 struct strbuf v = STRBUF_INIT;
33
34 va_start(ap, fmt);
35 strbuf_vaddf(&v, fmt, ap);
36 va_end(ap);
37
38 argv_array_push_nodup(array, strbuf_detach(&v, NULL));
39}
40
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41void argv_array_pushl(struct argv_array *array, ...)
42{
43 va_list ap;
44 const char *arg;
45
46 va_start(ap, array);
47 while((arg = va_arg(ap, const char *)))
48 argv_array_push(array, arg);
49 va_end(ap);
50}
51
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52void argv_array_pop(struct argv_array *array)
53{
54 if (!array->argc)
55 return;
56 free((char *)array->argv[array->argc - 1]);
57 array->argv[array->argc - 1] = NULL;
58 array->argc--;
59}
60
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61void argv_array_clear(struct argv_array *array)
62{
63 if (array->argv != empty_argv) {
64 int i;
65 for (i = 0; i < array->argc; i++)
66 free((char **)array->argv[i]);
67 free(array->argv);
68 }
69 argv_array_init(array);
70}