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/* Copyright (C) 1992, 1993, 1996, 1998 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: gp_dosfs.c,v 1.17 2004/04/08 16:18:25 giles Exp $ */
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/* Common routines for MS-DOS (any compiler) and DesqView/X, */
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/* which has a MS-DOS-like file system. */
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#include "dos_.h"
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#include "gx.h"
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#include "gp.h"
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#include "gpmisc.h"
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/* ------ Printer accessing ------ */
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/* Put a printer file (which might be stdout) into binary or text mode. */
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/* This is not a standard gp procedure, */
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/* but all MS-DOS configurations need it. */
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void
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gp_set_file_binary(int prnfno, bool binary)
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{
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union REGS regs;
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regs.h.ah = 0x44; /* ioctl */
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regs.h.al = 0; /* get device info */
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regs.rshort.bx = prnfno;
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intdos(®s, ®s);
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if (regs.rshort.cflag != 0 || !(regs.h.dl & 0x80))
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return; /* error, or not a device */
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if (binary)
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regs.h.dl |= 0x20; /* binary (no ^Z intervention) */
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else
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regs.h.dl &= ~0x20; /* text */
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regs.h.dh = 0;
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regs.h.ah = 0x44; /* ioctl */
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regs.h.al = 1; /* set device info */
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intdos(®s, ®s);
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}
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/* ------ File accessing ------ */
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/* Set a file into binary or text mode. */
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int
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gp_setmode_binary(FILE * pfile, bool binary)
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{
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gp_set_file_binary(fileno(pfile), binary);
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return 0; /* Fake out dos return status */
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}
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/* ------ File names ------ */
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/* Define the character used for separating file names in a list. */
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const char gp_file_name_list_separator = ';';
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/* Define the string to be concatenated with the file mode */
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/* for opening files without end-of-line conversion. */
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const char gp_fmode_binary_suffix[] = "b";
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/* Define the file modes for binary reading or writing. */
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const char gp_fmode_rb[] = "rb";
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const char gp_fmode_wb[] = "wb";
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/* -------------- Helpers for gp_file_name_combine_generic ------------- */
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uint gp_file_name_root(const char *fname, uint len)
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{ int i = 0;
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if (len == 0)
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return 0;
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if (len > 1 && fname[0] == '\\' && fname[1] == '\\') {
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/* A network path: "\\server\share\" */
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int k = 0;
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for (i = 2; i < len; i++)
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if (fname[i] == '\\' || fname[i] == '/')
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if (k++) {
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i++;
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break;
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}
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} else if (fname[0] == '/' || fname[0] == '\\') {
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/* Absolute with no drive. */
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i = 1;
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} else if (len > 1 && fname[1] == ':') {
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/* Absolute with a drive. */
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i = (len > 2 && (fname[2] == '/' || fname[2] == '\\') ? 3 : 2);
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}
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return i;
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}
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uint gs_file_name_check_separator(const char *fname, int len, const char *item)
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{ if (len > 0) {
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if (fname[0] == '/' || fname[0] == '\\')
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return 1;
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} else if (len < 0) {
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if (fname[-1] == '/' || fname[-1] == '\\')
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return 1;
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}
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return 0;
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}
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bool gp_file_name_is_parent(const char *fname, uint len)
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{ return len == 2 && fname[0] == '.' && fname[1] == '.';
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}
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bool gp_file_name_is_current(const char *fname, uint len)
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{ return len == 1 && fname[0] == '.';
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}
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const char *gp_file_name_separator(void)
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{ return "/";
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}
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const char *gp_file_name_directory_separator(void)
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{ return "/";
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}
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const char *gp_file_name_parent(void)
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{ return "..";
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}
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const char *gp_file_name_current(void)
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{ return ".";
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}
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bool gp_file_name_is_partent_allowed(void)
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{ return true;
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}
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bool gp_file_name_is_empty_item_meanful(void)
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{ return false;
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}
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gp_file_name_combine_result
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gp_file_name_combine(const char *prefix, uint plen, const char *fname, uint flen,
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bool no_sibling, char *buffer, uint *blen)
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{
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return gp_file_name_combine_generic(prefix, plen,
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fname, flen, no_sibling, buffer, blen);
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}
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