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/* Error-checking wrappers for memstream functions.
Copyright (C) 2016-2022 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_XMEMSTREAM_H
#define SUPPORT_XMEMSTREAM_H
#include <stdio.h>
#include <sys/cdefs.h>
__BEGIN_DECLS
/* Wrappers for other libc functions. */
struct xmemstream
{
FILE *out;
char *buffer;
size_t length;
};
/* Create a new in-memory stream. Initializes *STREAM. After this
function returns, STREAM->out is a file descriptor open for
writing. errno is preserved, so that the %m format specifier can
be used for writing to STREAM->out. */
void xopen_memstream (struct xmemstream *stream);
/* Closes STREAM->OUT. After this function returns, STREAM->buffer
and STREAM->length denote a memory range which contains the bytes
written to the output stream. The caller should free
STREAM->buffer. */
void xfclose_memstream (struct xmemstream *stream);
__END_DECLS
#endif /* SUPPORT_XMEMSTREAM_H */
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