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/* Test argv iterator
Copyright (C) 2008-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Jim Meyering. */
#include <config.h>
#include "argv-iter.h"
#include <stdio.h>
#include <string.h>
#include "macros.h"
#define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array))
#define STREQ(a, b) (strcmp (a, b) == 0)
static FILE *
write_nul_delimited_argv (char **argv)
{
FILE *fp = tmpfile ();
ASSERT (fp);
while (*argv)
{
size_t len = strlen (*argv) + 1;
ASSERT (fwrite (*argv, len, 1, fp) == 1);
argv++;
}
ASSERT (fflush (fp) == 0);
rewind (fp);
return fp;
}
int
main (void)
{
static char one[] = "1";
static char two[] = "2";
static char three[] = "3";
static char *av[][4] = {
{NULL},
{one, NULL},
{one, two, NULL},
{one, two, three, NULL}
};
int use_stream;
for (use_stream = 0; use_stream < 2; use_stream++)
{
size_t i;
for (i = 0; i < ARRAY_CARDINALITY (av); i++)
{
FILE *fp;
struct argv_iterator *ai;
size_t n_found = 0;
if (use_stream)
{
/* Generate an identical list to be read via FP. */
ASSERT ((fp = write_nul_delimited_argv (av[i])) != NULL);
ai = argv_iter_init_stream (fp);
}
else
{
fp = NULL;
ai = argv_iter_init_argv (av[i]);
}
ASSERT (ai);
while (1)
{
enum argv_iter_err ai_err;
char *s = argv_iter (ai, &ai_err);
ASSERT ((i == n_found) == (ai_err == AI_ERR_EOF));
ASSERT ((s == NULL) ^ (ai_err == AI_ERR_OK));
ASSERT (ai_err == AI_ERR_OK || ai_err == AI_ERR_EOF);
if (ai_err == AI_ERR_OK)
++n_found;
if (ai_err == AI_ERR_EOF)
break;
/* In stream mode, the strings are equal, but
in argv mode the actual pointers are equal. */
ASSERT (use_stream
? STREQ (s, av[i][n_found - 1])
: s == av[i][n_found - 1]);
}
ASSERT (argv_iter_n_args (ai) == i);
argv_iter_free (ai);
if (fp)
ASSERT (fclose (fp) == 0);
}
}
return 0;
}
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