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- /* Copyright (C) 1992, 1993, 1996, 1998 Aladdin Enterprises. All rights reserved.
-
- This software is provided AS-IS with no warranty, either express or
- implied.
-
- This software is distributed under license and may not be copied,
- modified or distributed except as expressly authorized under the terms
- of the license contained in the file LICENSE in this distribution.
-
- For more information about licensing, please refer to
- http://www.ghostscript.com/licensing/. For information on
- commercial licensing, go to http://www.artifex.com/licensing/ or
- contact Artifex Software, Inc., 101 Lucas Valley Road #110,
- San Rafael, CA 94903, U.S.A., +1(415)492-9861.
- */
- /* $Id: gp_dosfs.c,v 1.17 2004/04/08 16:18:25 giles Exp $ */
- /* Common routines for MS-DOS (any compiler) and DesqView/X, */
- /* which has a MS-DOS-like file system. */
- #include "dos_.h"
- #include "gx.h"
- #include "gp.h"
- #include "gpmisc.h"
- /* ------ Printer accessing ------ */
- /* Put a printer file (which might be stdout) into binary or text mode. */
- /* This is not a standard gp procedure, */
- /* but all MS-DOS configurations need it. */
- void
- gp_set_file_binary(int prnfno, bool binary)
- {
- union REGS regs;
- regs.h.ah = 0x44; /* ioctl */
- regs.h.al = 0; /* get device info */
- regs.rshort.bx = prnfno;
- intdos(®s, ®s);
- if (regs.rshort.cflag != 0 || !(regs.h.dl & 0x80))
- return; /* error, or not a device */
- if (binary)
- regs.h.dl |= 0x20; /* binary (no ^Z intervention) */
- else
- regs.h.dl &= ~0x20; /* text */
- regs.h.dh = 0;
- regs.h.ah = 0x44; /* ioctl */
- regs.h.al = 1; /* set device info */
- intdos(®s, ®s);
- }
- /* ------ File accessing ------ */
- /* Set a file into binary or text mode. */
- int
- gp_setmode_binary(FILE * pfile, bool binary)
- {
- gp_set_file_binary(fileno(pfile), binary);
- return 0; /* Fake out dos return status */
- }
- /* ------ File names ------ */
- /* Define the character used for separating file names in a list. */
- const char gp_file_name_list_separator = ';';
- /* Define the string to be concatenated with the file mode */
- /* for opening files without end-of-line conversion. */
- const char gp_fmode_binary_suffix[] = "b";
- /* Define the file modes for binary reading or writing. */
- const char gp_fmode_rb[] = "rb";
- const char gp_fmode_wb[] = "wb";
- /* -------------- Helpers for gp_file_name_combine_generic ------------- */
- uint gp_file_name_root(const char *fname, uint len)
- { int i = 0;
-
- if (len == 0)
- return 0;
- if (len > 1 && fname[0] == '\\' && fname[1] == '\\') {
- /* A network path: "\\server\share\" */
- int k = 0;
- for (i = 2; i < len; i++)
- if (fname[i] == '\\' || fname[i] == '/')
- if (k++) {
- i++;
- break;
- }
- } else if (fname[0] == '/' || fname[0] == '\\') {
- /* Absolute with no drive. */
- i = 1;
- } else if (len > 1 && fname[1] == ':') {
- /* Absolute with a drive. */
- i = (len > 2 && (fname[2] == '/' || fname[2] == '\\') ? 3 : 2);
- }
- return i;
- }
- uint gs_file_name_check_separator(const char *fname, int len, const char *item)
- { if (len > 0) {
- if (fname[0] == '/' || fname[0] == '\\')
- return 1;
- } else if (len < 0) {
- if (fname[-1] == '/' || fname[-1] == '\\')
- return 1;
- }
- return 0;
- }
- bool gp_file_name_is_parent(const char *fname, uint len)
- { return len == 2 && fname[0] == '.' && fname[1] == '.';
- }
- bool gp_file_name_is_current(const char *fname, uint len)
- { return len == 1 && fname[0] == '.';
- }
- const char *gp_file_name_separator(void)
- { return "/";
- }
- const char *gp_file_name_directory_separator(void)
- { return "/";
- }
- const char *gp_file_name_parent(void)
- { return "..";
- }
- const char *gp_file_name_current(void)
- { return ".";
- }
- bool gp_file_name_is_partent_allowed(void)
- { return true;
- }
- bool gp_file_name_is_empty_item_meanful(void)
- { return false;
- }
- gp_file_name_combine_result
- gp_file_name_combine(const char *prefix, uint plen, const char *fname, uint flen,
- bool no_sibling, char *buffer, uint *blen)
- {
- return gp_file_name_combine_generic(prefix, plen,
- fname, flen, no_sibling, buffer, blen);
- }
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