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#include "cache.h"

#include "argv-array.h"

#include "strbuf.h"

const char *empty_argv[] = { NULL };

void argv_array_init(struct argv_array *array)

{

array->argv = empty_argv;

array->argc = 0;

array->alloc = 0;

}

static void argv_array_push_nodup(struct argv_array *array, const char *value)

{

if (array->argv == empty_argv)

array->argv = NULL;

ALLOC_GROW(array->argv, array->argc + 2, array->alloc);

array->argv[array->argc++] = value;

array->argv[array->argc] = NULL;

}

void argv_array_push(struct argv_array *array, const char *value)

{

argv_array_push_nodup(array, xstrdup(value));

}

void argv_array_pushf(struct argv_array *array, const char *fmt, ...)

{

va_list ap;

struct strbuf v = STRBUF_INIT;

va_start(ap, fmt);

strbuf_vaddf(&v, fmt, ap);

va_end(ap);

argv_array_push_nodup(array, strbuf_detach(&v, NULL));

}

void argv_array_pushl(struct argv_array *array, ...)

{

va_list ap;

const char *arg;

va_start(ap, array);

while((arg = va_arg(ap, const char *)))

argv_array_push(array, arg);

va_end(ap);

}

void argv_array_pushv(struct argv_array *array, const char **argv)

{

for (; *argv; argv++)

argv_array_push(array, *argv);

}

void argv_array_pop(struct argv_array *array)

{

if (!array->argc)

return;

free((char *)array->argv[array->argc - 1]);

array->argv[array->argc - 1] = NULL;

array->argc--;

}

void argv_array_clear(struct argv_array *array)

{

if (array->argv != empty_argv) {

int i;

for (i = 0; i < array->argc; i++)

free((char *)array->argv[i]);

free(array->argv);

}

argv_array_init(array);

}

const char **argv_array_detach(struct argv_array *array)

{

if (array->argv == empty_argv)

return xcalloc(1, sizeof(const char *));

else {

const char **ret = array->argv;

argv_array_init(array);

return ret;

}

}