124 lines
4.2 KiB
C
124 lines
4.2 KiB
C
/*
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* finddisplay.c -
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*
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* *********************************************************************
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* * Copyright (C) 1985, 1990 Regents of the University of California. *
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* * Permission to use, copy, modify, and distribute this *
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* * software and its documentation for any purpose and without *
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* * fee is hereby granted, provided that the above copyright *
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* * notice appear in all copies. The University of California *
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* * makes no representations about the suitability of this *
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* * software for any purpose. It is provided "as is" without *
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* * express or implied warranty. Export of this software outside *
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* * of the United States of America may require an export license. *
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* *********************************************************************
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*
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* This file contains a single routine that will find the correct
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* graphics display to use from the current terminal and return
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* parameters for the display, such as its type and the location
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* of the tablet port. It is used as part of the Caesar design
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* system.
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*/
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#ifndef lint
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static char rcsid[] __attribute__ ((unused)) = "$Header: /usr/cvsroot/magic-8.0/utils/finddisp.c,v 1.1.1.1 2008/02/03 20:43:50 tim Exp $";
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#endif /* not lint */
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#include <stdio.h>
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#include <string.h>
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#include "utils/magic.h"
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#include "utils/utils.h"
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/* Import from library routines: */
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extern char *ttyname();
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/*
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* ----------------------------------------------------------------------------
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* FindDisplay --
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*
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* This procedure locates information about the color display
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* to use from a given terminal (determined by tty or the name
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* of the standard input file) by looking in the file passed.
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*
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* Results:
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* None.
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*
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* Side effects:
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* The parameters pDisplayPort, pTabletPort, pDisType, and
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* pMonType all point to strings that are modified. *pDisplayPort
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* is filled with the name of the port that connects to the graphics
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* display. *pTabletPort is filled in with the name of the port to be
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* used to receive characters from the tablet. *pDisType is filled
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* in with the name of the type of display ("OGL", etc.), and
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* *pMonType is filled in with the name of the monitor type attached
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* to the display (used to select color maps).
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*
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* If the file is not found or if there is not a suitable line then
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* nothing is modified.
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*
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* File format:
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* Each line in the displays file contains up to five strings
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* which are, in order, the name of a text terminal, the name
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* of the corresponding graphics display port, the monitor type
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* attached to that display, the name of the display type, and
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* the name of the tablet port to use for that display. The
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* tablet port can be omitted, in which case the display port
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* is used.
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* ----------------------------------------------------------------------------
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*/
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void
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FindDisplay(tty, file, path, pDisplayPort, pTabletPort, pDisType, pMonType)
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char *tty; /* Terminal for which display info is desired.
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* If NULL, used device on stdin.
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*/
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char *file; /* Name of file in which to find info. */
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char *path; /* Path to use for lookup. */
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char **pDisplayPort; /* Will be filled in with the name of the
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* port for the graphics display.
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*/
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char **pTabletPort; /* Will be filled in with the name of the
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* tablet. */
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char **pDisType; /* Will be filled in with the display type. */
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char **pMonType; /* Will be filled in with the monitor type. */
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{
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int i;
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char line[100], name1[100];
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static char name2[100], mon[100], dType[100], tabletPort[100];
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FILE *f;
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if (tty == NULL) tty = ttyname(fileno(stdin));
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if (tty == NULL) return;
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f = PaOpen(file, "r", (char *) NULL, path, (char *) NULL, (char **) NULL);
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if (f == NULL) return;
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while (1)
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{
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if (fgets(line, 99, f) == NULL)
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{
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(void) fclose(f);
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return;
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}
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i = sscanf(line, "%99s %99s %99s %99s %99s", name1, name2,
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mon, dType, tabletPort);
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if (i < 4)
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{
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(void) fclose(f);
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return;
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}
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if (strcmp(name1, tty) == 0)
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{
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(void) fclose(f);
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*pDisplayPort = name2;
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*pMonType = mon;
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*pDisType = dType;
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if (i >= 5) *pTabletPort = tabletPort;
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else *pTabletPort = name2;
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return;
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}
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}
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}
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