4.3BSD - /usr/src/usr.lib/libplot/dumb/open.c

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: static char sccsid[] = "@(#)open.c	5.1 (Berkeley) 5/7/85";
   9: #endif not lint
  10: 
  11: /*
  12:  * This accepts plot file formats and produces the appropriate plots
  13:  * for dumb terminals.  It can also be used for printing terminals and
  14:  * lineprinter listings, although there is no way to specify number of
  15:  * lines and columns different from your terminal.  This would be easy
  16:  * to change, and is left as an exercise for the reader.
  17:  */
  18: 
  19: #include <signal.h>
  20: #include "dumb.h"
  21: 
  22: int minX, rangeX;   /* min and range of x */
  23: int minY, rangeY;   /* min and range of y */
  24: int currentx,currenty;
  25: int COLS,LINES;
  26: 
  27: /* A very large screen! (probably should use malloc) */
  28: char screenmat[MAXCOLS][MAXLINES];
  29: 
  30: openpl()
  31: {
  32:     int closepl();
  33:     int i, j;
  34:     char *term, *getenv();
  35:     char bp[1024];
  36: 
  37:     term = getenv("TERM");
  38:     tgetent(bp, term);
  39: 
  40:     COLS = tgetnum("co");
  41:     if (COLS > MAXCOLS)
  42:         COLS = MAXCOLS;
  43:     if (COLS < 0)
  44:         COLS = 48;  /* lower bound on # of cols? */
  45:     COLS--;             /* prevent auto wrap */
  46: 
  47:     LINES = tgetnum("li");
  48:     if (LINES > MAXLINES)
  49:         LINES = MAXLINES;
  50:     if (LINES < 0)
  51:         LINES = 20; /* lower bound on # of lines? */
  52: 
  53:     for(i=0; i<COLS; i++)
  54:         for(j=0; j<LINES; j++)
  55:             screenmat[i][j] = ' ';
  56: 
  57:     signal(SIGINT, closepl);
  58:     currentx = currenty = 0;
  59: }

Defined functions

Defined variables