mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 12:41:05 +00:00
cea56af185
The advantage is that the buffer will always contain the number
of characters as returned from the function, which allows one to use
a sequence like
/* No more audit module output. */
line_length = xgetline (&buffer, &buffer_length, fp);
TEST_COMPARE_BLOB ("", 0, buffer, line_length);
to check for an expected EOF, while also reporting any unexpected
extra data encountered.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* fopen with error checking.
|
|
Copyright (C) 2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <support/xstdio.h>
|
|
#include <support/check.h>
|
|
|
|
size_t
|
|
xgetline (char **lineptr, size_t *n, FILE *stream)
|
|
{
|
|
TEST_VERIFY (!ferror (stream));
|
|
ssize_t ret = getline (lineptr, n, stream);
|
|
if (ferror (stream))
|
|
{
|
|
TEST_VERIFY (ret < 0);
|
|
FAIL_EXIT1 ("getline: %m");
|
|
}
|
|
if (feof (stream))
|
|
{
|
|
TEST_VERIFY (ret <= 0);
|
|
return 0;
|
|
}
|
|
TEST_VERIFY (ret > 0);
|
|
return ret;
|
|
}
|