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/* Copyright (C) 1993, 1994 Aladdin Enterprises. All rights reserved.
This file is part of GNU Ghostscript.
GNU Ghostscript is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY. No author or distributor accepts responsibility to
anyone for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing. Refer to
the GNU General Public License for full details.
Everyone is granted permission to copy, modify and redistribute GNU
Ghostscript, but only under the conditions described in the GNU General
Public License. A copy of this license is supposed to have been given to
you along with GNU Ghostscript so you can know your rights and
responsibilities. It should be in a file named COPYING. Among other
things, the copyright notice and this notice must be preserved on all
copies.
Aladdin Enterprises is not affiliated with the Free Software Foundation or
the GNU Project. GNU Ghostscript, as distributed by Aladdin Enterprises,
does not depend on any other GNU software.
*/
/* gdevpipe.c */
/* %pipe% IODevice */
#include "errno_.h"
#include "stdio_.h"
#include "string_.h"
#include "gserror.h"
#include "gstypes.h"
#include "gsmemory.h" /* for gxiodev.h */
#include "stream.h"
#include "gxiodev.h"
/* popen isn't POSIX-standard, so we declare it here. */
/* Because of inconsistent (and sometimes incorrect) header files, */
/* we must omit the argument list. */
extern FILE *popen( /* P2(const char *, const char *) */ );
extern int pclose(P1(FILE *));
/* The pipe IODevice */
private iodev_proc_fopen(pipe_fopen);
private iodev_proc_fclose(pipe_fclose);
gx_io_device gs_iodev_pipe = {
"%pipe%", "FileSystem",
{ iodev_no_init, iodev_no_open_device,
NULL /*iodev_os_open_file*/, pipe_fopen, pipe_fclose,
iodev_no_delete_file, iodev_no_rename_file, iodev_no_file_status,
iodev_no_enumerate_files, NULL, NULL,
iodev_no_get_params, iodev_no_put_params
}
};
/* The file device procedures */
private int
pipe_fopen(gx_io_device *iodev, const char *fname, const char *access,
FILE **pfile, char *rfname, uint rnamelen)
{ /* The OSF/1 1.3 library doesn't include const in the */
/* prototype for popen.... */
errno = 0;
*pfile = popen((char *)fname, (char *)access);
if ( *pfile == NULL )
return_error(gs_fopen_errno_to_code(errno));
if ( rfname != NULL )
strcpy(rfname, fname);
return 0;
}
private int
pipe_fclose(gx_io_device *iodev, FILE *file)
{ pclose(file);
return 0;
}
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