mes/lib/stdio/fwrite.c
Jan Nieuwenhuizen 1bb64ec48f
mescc: Mes C Library: Have write behave well with buffered reads.
* lib/mes/write.c: New file.
* build-aux/configure-lib.sh (libc_mini_SOURCES): Add it.
(libc_mini_shared_SOURCES): New variable.
(libc_mini_SOURCES, libmes_SOURCES): Use it.
(libmes_SOURCES): Add lib/linux/lseek.c, lib/posix/write.c.
(libc_tcc_SOURCES): Remove lib/linux/lseek.c.
* lib/posix/write.c (write): Correct for read buffer.
* lib/stdio/fwrite.c (fwrite): Remove read buffer correction.
* simple.sh: Update.
2019-07-28 13:01:37 +02:00

53 lines
1.4 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes 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 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mes/lib.h>
#include <stdio.h>
#include <unistd.h>
size_t
fwrite (void const *data, size_t size, size_t count, FILE * stream)
{
if (__mes_debug () > 1)
{
eputs ("fwrite ");
eputs (itoa ((int) (long) stream));
eputs (" ");
eputs (itoa (size));
eputs ("\n");
}
if (!size || !count)
return 0;
int filedes = (long) stream;
int bytes = write (filedes, data, size * count);
if (__mes_debug () > 2)
{
eputs (" => ");
eputs (itoa (bytes));
eputs ("\n");
}
if (bytes > 0)
return bytes / size;
return 0;
}