strvec.c

   1 #include "cache.h"
   2 #include "strvec.h"
   3 #include "strbuf.h"
   4
   5 const char *empty_strvec[] = { NULL };
   6
   7 void strvec_init(struct strvec *array)
   8 {
   9         array->v = empty_strvec;
  10         array->nr = 0;
  11         array->alloc = 0;
  12 }
  13
  14 static void strvec_push_nodup(struct strvec *array, const char *value)
  15 {
  16         if (array->v == empty_strvec)
  17                 array->v = NULL;
  18
  19         ALLOC_GROW(array->v, array->nr + 2, array->alloc);
  20         array->v[array->nr++] = value;
  21         array->v[array->nr] = NULL;
  22 }
  23
  24 const char *strvec_push(struct strvec *array, const char *value)
  25 {
  26         strvec_push_nodup(array, xstrdup(value));
  27         return array->v[array->nr - 1];
  28 }
  29
  30 const char *strvec_pushf(struct strvec *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         strvec_push_nodup(array, strbuf_detach(&v, NULL));
  40         return array->v[array->nr - 1];
  41 }
  42
  43 void strvec_pushl(struct strvec *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                 strvec_push(array, arg);
  51         va_end(ap);
  52 }
  53
  54 void strvec_pushv(struct strvec *array, const char **items)
  55 {
  56         for (; *items; items++)
  57                 strvec_push(array, *items);
  58 }
  59
  60 void strvec_pop(struct strvec *array)
  61 {
  62         if (!array->nr)
  63                 return;
  64         free((char *)array->v[array->nr - 1]);
  65         array->v[array->nr - 1] = NULL;
  66         array->nr--;
  67 }
  68
  69 void strvec_split(struct strvec *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                 strvec_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 strvec_clear(struct strvec *array)
  90 {
  91         if (array->v != empty_strvec) {
  92                 int i;
  93                 for (i = 0; i < array->nr; i++)
  94                         free((char *)array->v[i]);
  95                 free(array->v);
  96         }
  97         strvec_init(array);
  98 }
  99
 100 const char **strvec_detach(struct strvec *array)
 101 {
 102         if (array->v == empty_strvec)
 103                 return xcalloc(1, sizeof(const char *));
 104         else {
 105                 const char **ret = array->v;
 106                 strvec_init(array);
 107                 return ret;
 108         }
 109 }