glibc/support/file_contents.h

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/* Functionality for checking file contents.
Copyright (C) 2024 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/>. */
#ifndef SUPPORT_FILE_CONTENTS_H
#define SUPPORT_FILE_CONTENTS_H
#include <support/check.h>
#include <stdio.h>
__BEGIN_DECLS
/* Check that an already-open file has exactly the given bytes,
starting at the current location in the file. The file position
indicator is updated to point after the bytes compared. Return 0
if equal, 1 otherwise or on read error. */
int support_compare_file_bytes (FILE *fp, const char *contents, size_t length);
/* Check that an already-open file has exactly the given string as
contents, starting at the current offset. The file position
indicator is updated to point after the bytes compared. Return 0
if equal, 1 otherwise or on read error. */
int support_compare_file_string (FILE *fp, const char *contents);
/* Check that a not-currently-open file has exactly the given bytes.
Return 0 if equal, 1 otherwise or on read error. */
int support_open_and_compare_file_bytes (const char *file,
const char *contents,
size_t length);
/* Check that a not-currently-open file has exactly the given string
as contents, starting at the current offset. Return 0 if equal, 1
otherwise or on read error. */
int support_open_and_compare_file_string (const char *file,
const char *contents);
/* Compare bytes read from an open file with the given string. The
file position indicator is updated to point after the bytes
compared. */
#define TEST_COMPARE_FILE_STRING(FP, CONTENTS) \
TEST_COMPARE (support_compare_file_string (FP, CONTENTS), 0)
/* Read a file and compare bytes read from it with the given string. */
#define TEST_OPEN_AND_COMPARE_FILE_STRING(FILE, CONTENTS) \
TEST_COMPARE (support_open_and_compare_file_string (FILE, CONTENTS), 0)
__END_DECLS
#endif /* SUPPORT_FILE_CONTENTS_H */