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/* Test of getdelim() function.
Copyright (C) 2007-2021 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, 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 Eric Blake <ebb9@byu.net>, 2007. */
#include <config.h>
#include <stdio.h>
#include "signature.h"
SIGNATURE_CHECK (getdelim, ssize_t, (char **, size_t *, int, FILE *));
#include <stdlib.h>
#include <string.h>
#include "macros.h"
int
main (void)
{
FILE *f;
char *line;
size_t len;
ssize_t result;
/* Create test file. */
f = fopen ("test-getdelim.txt", "wb");
if (!f || fwrite ("anAnbcnd\0f", 1, 10, f) != 10 || fclose (f) != 0)
{
fputs ("Failed to create sample file.\n", stderr);
remove ("test-getdelim.txt");
return 1;
}
f = fopen ("test-getdelim.txt", "rb");
if (!f)
{
fputs ("Failed to reopen sample file.\n", stderr);
remove ("test-getdelim.txt");
return 1;
}
/* Test initial allocation, which must include trailing NUL. */
line = NULL;
len = 0;
result = getdelim (&line, &len, 'n', f);
ASSERT (result == 2);
ASSERT (strcmp (line, "an") == 0);
ASSERT (2 < len);
free (line);
/* Test initial allocation again, with line = NULL and len != 0. */
line = NULL;
len = (size_t)(~0) / 4;
result = getdelim (&line, &len, 'n', f);
ASSERT (result == 2);
ASSERT (strcmp (line, "An") == 0);
ASSERT (2 < len);
free (line);
/* Test growth of buffer. */
line = malloc (1);
len = 1;
result = getdelim (&line, &len, 'n', f);
ASSERT (result == 3);
ASSERT (strcmp (line, "bcn") == 0);
ASSERT (3 < len);
/* Test embedded NULs and EOF behavior. */
result = getdelim (&line, &len, 'n', f);
ASSERT (result == 3);
ASSERT (memcmp (line, "d\0f", 4) == 0);
ASSERT (3 < len);
result = getdelim (&line, &len, 'n', f);
ASSERT (result == -1);
free (line);
fclose (f);
remove ("test-getdelim.txt");
return 0;
}
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