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git/strvec.c
Elijah Newren 36bf195890 alloc.h: move ALLOC_GROW() functions from cache.h
This allows us to replace includes of cache.h with includes of the much
smaller alloc.h in many places.  It does mean that we also need to add
includes of alloc.h in a number of C files.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-23 17:25:28 -08:00

110 lines
2.0 KiB
C

#include "git-compat-util.h"
#include "strvec.h"
#include "alloc.h"
#include "strbuf.h"
const char *empty_strvec[] = { NULL };
void strvec_init(struct strvec *array)
{
struct strvec blank = STRVEC_INIT;
memcpy(array, &blank, sizeof(*array));
}
static void strvec_push_nodup(struct strvec *array, const char *value)
{
if (array->v == empty_strvec)
array->v = NULL;
ALLOC_GROW(array->v, array->nr + 2, array->alloc);
array->v[array->nr++] = value;
array->v[array->nr] = NULL;
}
const char *strvec_push(struct strvec *array, const char *value)
{
strvec_push_nodup(array, xstrdup(value));
return array->v[array->nr - 1];
}
const char *strvec_pushf(struct strvec *array, const char *fmt, ...)
{
va_list ap;
struct strbuf v = STRBUF_INIT;
va_start(ap, fmt);
strbuf_vaddf(&v, fmt, ap);
va_end(ap);
strvec_push_nodup(array, strbuf_detach(&v, NULL));
return array->v[array->nr - 1];
}
void strvec_pushl(struct strvec *array, ...)
{
va_list ap;
const char *arg;
va_start(ap, array);
while ((arg = va_arg(ap, const char *)))
strvec_push(array, arg);
va_end(ap);
}
void strvec_pushv(struct strvec *array, const char **items)
{
for (; *items; items++)
strvec_push(array, *items);
}
void strvec_pop(struct strvec *array)
{
if (!array->nr)
return;
free((char *)array->v[array->nr - 1]);
array->v[array->nr - 1] = NULL;
array->nr--;
}
void strvec_split(struct strvec *array, const char *to_split)
{
while (isspace(*to_split))
to_split++;
for (;;) {
const char *p = to_split;
if (!*p)
break;
while (*p && !isspace(*p))
p++;
strvec_push_nodup(array, xstrndup(to_split, p - to_split));
while (isspace(*p))
p++;
to_split = p;
}
}
void strvec_clear(struct strvec *array)
{
if (array->v != empty_strvec) {
int i;
for (i = 0; i < array->nr; i++)
free((char *)array->v[i]);
free(array->v);
}
strvec_init(array);
}
const char **strvec_detach(struct strvec *array)
{
if (array->v == empty_strvec)
return xcalloc(1, sizeof(const char *));
else {
const char **ret = array->v;
strvec_init(array);
return ret;
}
}