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/* Copyright (C) 2000 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: gsiodevs.c,v 1.6 2004/08/04 19:36:12 stefan Exp $ */
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/* %stdxxx IODevice implementation for non-PostScript configurations */
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#include "gx.h"
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#include "gserrors.h"
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#include "gxiodev.h"
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#include "stream.h"
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#include "strimpl.h"
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const char iodev_dtype_stdio[] = "Special";
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#define iodev_stdio(dname, open) {\
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dname, iodev_dtype_stdio,\
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{ iodev_no_init, open, iodev_no_open_file,\
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iodev_no_fopen, iodev_no_fclose,\
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iodev_no_delete_file, iodev_no_rename_file, iodev_no_file_status,\
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iodev_no_enumerate_files, NULL, NULL,\
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iodev_no_get_params, iodev_no_put_params\
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}\
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}
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#define STDIO_BUF_SIZE 128
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private int
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stdio_close_file(stream *s)
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{
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/* Don't close stdio files, but do free the buffer. */
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gs_memory_t *mem = s->memory;
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s->file = 0;
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gs_free_object(mem, s->cbuf, "stdio_close_file(buffer)");
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return 0;
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}
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private int
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stdio_open(gx_io_device * iodev, const char *access, stream ** ps,
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gs_memory_t * mem, char rw, FILE *file,
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void (*srw_file)(stream *, FILE *, byte *, uint))
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{
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stream *s;
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byte *buf;
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if (!streq1(access, rw))
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return_error(gs_error_invalidfileaccess);
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s = s_alloc(mem, "stdio_open(stream)");
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buf = gs_alloc_bytes(mem, STDIO_BUF_SIZE, "stdio_open(buffer)");
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if (s == 0 || buf == 0) {
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gs_free_object(mem, buf, "stdio_open(buffer)");
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gs_free_object(mem, s, "stdio_open(stream)");
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return_error(gs_error_VMerror);
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}
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srw_file(s, file, buf, STDIO_BUF_SIZE);
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s->procs.close = stdio_close_file;
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*ps = s;
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return 0;
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}
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private int
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stdin_open(gx_io_device * iodev, const char *access, stream ** ps,
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gs_memory_t * mem)
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{
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return stdio_open(iodev, access, ps, mem, 'r',
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mem->gs_lib_ctx->fstdin, sread_file);
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}
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const gx_io_device gs_iodev_stdin = iodev_stdio("%stdin%", stdin_open);
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private int
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stdout_open(gx_io_device * iodev, const char *access, stream ** ps,
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gs_memory_t * mem)
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{
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return stdio_open(iodev, access, ps, mem, 'w',
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mem->gs_lib_ctx->fstdout, swrite_file);
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}
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const gx_io_device gs_iodev_stdout = iodev_stdio("%stdout%", stdout_open);
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private int
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stderr_open(gx_io_device * iodev, const char *access, stream ** ps,
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gs_memory_t * mem)
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{
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return stdio_open(iodev, access, ps, mem, 'w',
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mem->gs_lib_ctx->fstderr, swrite_file);
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}
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const gx_io_device gs_iodev_stderr = iodev_stdio("%stderr%", stderr_open);
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