119 lines
2.3 KiB
C
119 lines
2.3 KiB
C
/***************************************************************************
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gbx_stream_process.c
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(c) 2000-2017 Benoît Minisini <benoit.minisini@gambas-basic.org>
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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 2, or (at your option)
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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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#define __STREAM_IMPL_C
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#include "gb_common.h"
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#include "gb_error.h"
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#include "gbx_value.h"
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#include "gb_limit.h"
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include "gbx_c_process.h"
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#include "gbx_stream.h"
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#define FDR ((CPROCESS *)stream->process.process)->out
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#define FDW ((CPROCESS *)stream->process.process)->in
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static int stream_open(STREAM *stream, const char *path, int mode, CPROCESS *process)
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{
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stream->process.process = process;
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stream->common.check_read = TRUE;
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STREAM_blocking(stream, FALSE);
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return FALSE;
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}
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static int stream_close(STREAM *stream)
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{
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if (FDW >= 0)
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{
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if (close(FDW) < 0)
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return TRUE;
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FDW = -1;
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}
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return FALSE;
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}
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static int stream_read(STREAM *stream, char *buffer, int len)
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{
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return read(FDR, buffer, len);
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}
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static int stream_write(STREAM *stream, char *buffer, int len)
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{
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return write(FDW, buffer, len);
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}
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static int stream_seek(STREAM *stream, int64_t pos, int whence)
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{
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if (FDR < 0)
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return TRUE;
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return (lseek(FDR, pos, whence) < 0);
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}
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static int stream_tell(STREAM *stream, int64_t *pos)
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{
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if (FDR < 0)
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return TRUE;
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*pos = lseek(FDR, 0, SEEK_CUR);
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return (*pos < 0);
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}
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static int stream_flush(STREAM *stream)
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{
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return FALSE;
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}
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#define stream_eof NULL
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#define stream_lof NULL
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static int stream_handle(STREAM *stream)
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{
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return FDR;
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}
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DECLARE_STREAM(STREAM_process);
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