home *** CD-ROM | disk | FTP | other *** search
- /* Copyright (C) 1992, 1993, 1996 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
- or distributor accepts any responsibility for the consequences of using it,
- or for whether it serves any particular purpose or works at all, unless he
- or she says so in writing. Refer to the Aladdin Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin Ghostscript must include a copy of the License,
- normally in a plain ASCII text file named PUBLIC. The License grants you
- the right to copy, modify and redistribute Aladdin Ghostscript, but only
- under certain conditions described in the License. Among other things, the
- License requires that the copyright notice and this notice be preserved on
- all copies.
- */
-
- /* gp_dosfs.c */
- /* 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"
-
- /* ------ 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_printer_binary(int prnfno, int 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 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";
-
- /* Answer whether a file name contains a directory/device specification, */
- /* i.e. is absolute (not directory- or device-relative). */
- bool
- gp_file_name_is_absolute(const char *fname, unsigned len)
- { /* A file name is absolute if it contains a drive specification */
- /* (second character is a :) or if it start with 0 or more .s */
- /* followed by a / or \. */
- if ( len >= 2 && fname[1] == ':' )
- return true;
- while ( len && *fname == '.' )
- ++fname, --len;
- return (len && (*fname == '/' || *fname == '\\'));
- }
-
- /* Answer the string to be used for combining a directory/device prefix */
- /* with a base file name. The file name is known to not be absolute. */
- const char *
- gp_file_name_concat_string(const char *prefix, unsigned plen,
- const char *fname, unsigned len)
- { if ( plen > 0 )
- switch ( prefix[plen - 1] )
- { case ':': case '/': case '\\': return "";
- };
- return "\\";
- }
-