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/* Test of getndelim2() function.
Copyright (C) 2008-2018 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>, 2008. */
#include <config.h>
#include "getndelim2.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "macros.h"
int
main (void)
{
FILE *f;
char *line = NULL;
size_t len = 0;
ssize_t result;
/* Create test file. */
f = fopen ("test-getndelim2.txt", "wb+");
if (!f || fwrite ("a\nbc\nd\0f", 1, 8, f) != 8)
{
fputs ("Failed to create sample file.\n", stderr);
remove ("test-getndelim2.txt");
return 1;
}
rewind (f);
/* Unlimited lines. */
/* Test initial allocation, which must include trailing NUL. */
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\n', f);
ASSERT (result == 2);
ASSERT (strcmp (line, "a\n") == 0);
ASSERT (2 < len);
/* Test growth of buffer, must not leak. */
free (line);
line = malloc (1);
len = 0;
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, EOF, '\n', f);
ASSERT (result == 3);
ASSERT (strcmp (line, "bc\n") == 0);
ASSERT (3 < len);
/* Test embedded NULs and EOF behavior. */
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', EOF, f);
ASSERT (result == 3);
ASSERT (memcmp (line, "d\0f", 4) == 0);
ASSERT (3 < len);
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', EOF, f);
ASSERT (result == -1);
/* Using offset and nmax. */
/* Limit growth to four bytes, including NUL, but parse to next 'd'. */
free (line);
rewind (f);
line = malloc (8);
memset (line, 'e', 8);
len = 8;
result = getndelim2 (&line, &len, 6, 10, 'd', 'd', f);
ASSERT (result == 3);
ASSERT (10 == len);
ASSERT (strcmp (line, "eeeeeea\nb") == 0);
/* No change if offset larger than limit. */
result = getndelim2 (&line, &len, len, 1, EOF, EOF, f);
ASSERT (result == -1);
ASSERT (10 == len);
ASSERT (strcmp (line, "eeeeeea\nb") == 0);
/* Consume to end of file, including embedded NUL. */
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, EOF, EOF, f);
ASSERT (result == 2);
ASSERT (10 == len);
ASSERT (memcmp (line, "\0f\0eeea\nb", 10) == 0);
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\r', f);
ASSERT (result == -1);
/* Larger file size. */
rewind (f);
{
int i;
for (i = 0; i < 16; i++)
fprintf (f, "%500x%c", i + 0u, i % 2 ? '\n' : '\r');
}
rewind (f);
{
char buffer[502];
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\r', f);
ASSERT (result == 501);
ASSERT (501 < len);
memset (buffer, ' ', 499);
buffer[499] = '0';
buffer[500] = '\r';
buffer[501] = '\0';
ASSERT (strcmp (buffer, line) == 0);
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, '\n', '\r', f);
ASSERT (result == 501);
ASSERT (501 < len);
buffer[499] = '1';
buffer[500] = '\n';
ASSERT (strcmp (buffer, line) == 0);
result = getndelim2 (&line, &len, 0, GETNLINE_NO_LIMIT, 'g', 'f', f);
ASSERT (result == 501 * 14 - 1);
ASSERT (501 * 14 <= len);
buffer[499] = 'f';
buffer[500] = '\0';
ASSERT (strcmp (buffer, line + 501 * 13) == 0);
result = getndelim2 (&line, &len, 501 * 14 - 1, GETNLINE_NO_LIMIT,
EOF, EOF, f);
ASSERT (result == 1);
buffer[500] = '\n';
ASSERT (strcmp (buffer, line + 501 * 13) == 0);
result = getndelim2 (&line, &len, 501 * 14 - 1, GETNLINE_NO_LIMIT,
EOF, EOF, f);
buffer[500] = '\0';
ASSERT (strcmp (buffer, line + 501 * 13) == 0);
ASSERT (result == -1);
}
fclose (f);
remove ("test-getndelim2.txt");
return 0;
}
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