argv-array.c

   1 #include "cache.h"
   2 #include "argv-array.h"
   3 #include "strbuf.h"
   4
   5 const char *empty_argv[] = { NULL };
   6
   7 void argv_array_init(struct argv_array *array)
   8 {
   9         array->argv = empty_argv;
  10         array->argc = 0;
  11         array->alloc = 0;
  12 }
  13
  14 static 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
  24 const char *argv_array_push(struct argv_array *array, const char *value)
  25 {
  26         argv_array_push_nodup(array, xstrdup(value));
  27         return array->argv[array->argc - 1];
  28 }
  29
  30 const char *argv_array_pushf(struct argv_array *array, const char *fmt, ...)
  31 {
  32         va_list ap;
  33         struct strbuf v = STRBUF_INIT;
  34
  35         va_start(ap, fmt);
  36         strbuf_vaddf(&v, fmt, ap);
  37         va_end(ap);
  38
  39         argv_array_push_nodup(array, strbuf_detach(&v, NULL));
  40         return array->argv[array->argc - 1];
  41 }
  42
  43 void argv_array_pushl(struct argv_array *array, ...)
  44 {
  45         va_list ap;
  46         const char *arg;
  47
  48         va_start(ap, array);
  49         while((arg = va_arg(ap, const char *)))
  50                 argv_array_push(array, arg);
  51         va_end(ap);
  52 }
  53
  54 void argv_array_pushv(struct argv_array *array, const char **argv)
  55 {
  56         for (; *argv; argv++)
  57                 argv_array_push(array, *argv);
  58 }
  59
  60 void argv_array_pop(struct argv_array *array)
  61 {
  62         if (!array->argc)
  63                 return;
  64         free((char *)array->argv[array->argc - 1]);
  65         array->argv[array->argc - 1] = NULL;
  66         array->argc--;
  67 }
  68
  69 void argv_array_split(struct argv_array *array, const char *to_split)
  70 {
  71         while (isspace(*to_split))
  72                 to_split++;
  73         for (;;) {
  74                 const char *p = to_split;
  75
  76                 if (!*p)
  77                         break;
  78
  79                 while (*p && !isspace(*p))
  80                         p++;
  81                 argv_array_push_nodup(array, xstrndup(to_split, p - to_split));
  82
  83                 while (isspace(*p))
  84                         p++;
  85                 to_split = p;
  86         }
  87 }
  88
  89 void argv_array_clear(struct argv_array *array)
  90 {
  91         if (array->argv != empty_argv) {
  92                 int i;
  93                 for (i = 0; i < array->argc; i++)
  94                         free((char *)array->argv[i]);
  95                 free(array->argv);
  96         }
  97         argv_array_init(array);
  98 }
  99
 100 const char **argv_array_detach(struct argv_array *array)
 101 {
 102         if (array->argv == empty_argv)
 103                 return xcalloc(1, sizeof(const char *));
 104         else {
 105                 const char **ret = array->argv;
 106                 argv_array_init(array);
 107                 return ret;
 108         }
 109 }