vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
125 lines
2.7 KiB
C
125 lines
2.7 KiB
C
/* Output stream referring to an stdio FILE.
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Copyright (C) 2006, 2019-2020 Free Software Foundation, Inc.
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Written by Bruno Haible <bruno@clisp.org>, 2006.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include "file-ostream.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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#if HAVE_TCDRAIN
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# include <termios.h>
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#endif
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#include "xalloc.h"
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struct file_ostream : struct ostream
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{
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fields:
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FILE *fp;
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};
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#if HAVE_TCDRAIN
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/* EINTR handling for tcdrain().
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This function can return -1/EINTR even though we don't have any
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signal handlers set up, namely when we get interrupted via SIGSTOP. */
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static inline int
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nonintr_tcdrain (int fd)
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{
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int retval;
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do
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retval = tcdrain (fd);
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while (retval < 0 && errno == EINTR);
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return retval;
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}
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#endif
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/* Implementation of ostream_t methods. */
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static void
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file_ostream::write_mem (file_ostream_t stream, const void *data, size_t len)
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{
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if (len > 0)
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fwrite (data, 1, len, stream->fp);
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}
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static void
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file_ostream::flush (file_ostream_t stream, ostream_flush_scope_t scope)
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{
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/* This ostream has no internal buffer, therefore nothing to do for
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scope == FLUSH_THIS_STREAM. */
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if (scope != FLUSH_THIS_STREAM)
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{
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fflush (stream->fp);
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if (scope == FLUSH_ALL)
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{
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int fd = fileno (stream->fp);
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if (fd >= 0)
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{
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/* For streams connected to a disk file: */
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fsync (fd);
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#if HAVE_TCDRAIN
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/* For streams connected to a terminal: */
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nonintr_tcdrain (fd);
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#endif
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}
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}
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}
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}
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static void
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file_ostream::free (file_ostream_t stream)
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{
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free (stream);
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}
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/* Constructor. */
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file_ostream_t
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file_ostream_create (FILE *fp)
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{
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file_ostream_t stream = XMALLOC (struct file_ostream_representation);
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stream->base.vtable = &file_ostream_vtable;
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stream->fp = fp;
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return stream;
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}
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/* Accessors. */
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static FILE *
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file_ostream::get_stdio_stream (file_ostream_t stream)
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{
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return stream->fp;
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}
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/* Instanceof test. */
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bool
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is_instance_of_file_ostream (ostream_t stream)
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{
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return IS_INSTANCE (stream, ostream, file_ostream);
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}
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