+/*
+ *
+ * dver: VAX Versatec driver for the new troff
+ *
+ * Authors: BWK(BELL)
+ * VCAT(berkley)
+ * Richard L. Hyde, Perdue University
+ * and David Slattengren, U.C. Berkeley
+ *
+ * Jaap Akkerhuis
+ * added Versatec80 support
+ * removed Berkeley specific stuff (like nstips)
+ * by #ifdef BERK, allthough a lot of things are
+ * around (like polygon and gremlin...)
+ *
+ * Carol Orange
+ * Changed to make the versatec a Harris typesetter
+ * look-alike.
+ */
+
+
+/*******************************************************************************
+
+ output language from troff:
+ all numbers are character strings
+
+#..\n comment
+sn size in points
+fn font as number from 1 to n
+cx ascii character x
+Cxyz funny char \(xyz. terminated by white space
+Hn go to absolute horizontal position n
+Vn go to absolute vertical position n (down is positive)
+hn go n units horizontally (relative)
+vn ditto vertically
+nnc move right nn, then print c (exactly 2 digits!)
+ (this wart is an optimization that shrinks output file size
+ about 35% and run-time about 15% while preserving ascii-ness)
+pn new page begins (number n) -- set v to 0
+P spread ends -- output it. (Put in by vsort).
+nb a end of line (information only -- no action needed)
+ b = space before line, a = after
+w paddable word space -- no action needed
+
+Dt ..\n draw operation 't':
+ Dl x y . line from here by x,y (drawing char .)
+ Dc d circle of diameter d with left side here
+ De x y ellipse of axes x,y with left side here
+ Da x y r arc counter-clockwise by x,y of radius r
+ D~ x y x y ... B-spline curve by x,y then x,y ...
+ vectors, with extents from miny to maxy (no border)
+
+x ..\n device control functions:
+ x i init
+ x T s name of device is s
+ x r n h v resolution is n/inch h = min horizontal motion, v = min vert
+ x p pause (can restart)
+ x s stop -- done for ever
+ x t generate trailer
+ x f n s font position n contains font s
+ x H n set character height to n
+ x S n set slant to N
+
+ Subcommands like "i" are often spelled out like "init".
+
+*******************************************************************************/
+
+#include <sys/vcmd.h>
+#include "the.h"
+
+public char *devname = "nver";
+public char *fontdir = "/usr/local/lib/ditroff/font";
+
+public int debug = 0; /* two different debugging modes */
+public int dbg = 0;
+
+extern int virtRES;
+ /* externs: set here, used elsewhere */
+extern int nolist, olist[];
+extern int pltmode[], prtmode[];
+
+char *operand();
+
+
+
+main(argc, argv)
+char *argv[];
+{
+ register FILE *fp;
+ char *dummy;
+
+ while (--argc > 0 && **++argv == '-') {
+ switch ((*argv)[1]) {
+ case 'F':
+ dummy = operand(&argc, &argv); /* ignore */
+ break;
+ case 'D':
+ debug = 1;
+ break;
+ case 'f':
+ fontdir = operand(&argc, &argv);
+ break;
+ case 'o':
+ outlist(operand(&argc, &argv));
+ break;
+#ifdef DEBUGABLE
+ case 'd':
+ dbg = atoi(operand(&argc, &argv));
+ if (dbg == 0) dbg = 1;
+ break;
+#endif
+ case 'n':
+ dummy = operand(&argc, &argv); /* ignore */
+ break;
+
+ case 'h':
+ dummy = operand(&argc, &argv); /* ignore */
+ break;
+ case 'x':
+ case 'y':
+ dummy = operand(&argc, &argv); /* ignore */
+ break;
+
+ }
+ }
+ /* ignore accounting argument... */
+ argc--;
+ argv++;
+
+#ifdef DRIVER
+ ioctl(OUTFILE, VSETSTATE, pltmode);
+#endif
+
+ initfonts();
+ initgraph(virtRES);
+
+ if (argc < 1)
+ conv(stdin);
+ else
+ while (argc-- > 0) {
+ if (strcmp(*argv, "-") == 0)
+ fp = stdin;
+ else if ((fp = fopen(*argv, "r")) == NULL)
+ error(FATAL, "can't open %s", *argv);
+ conv(fp);
+ fclose(fp);
+ argv++;
+ }
+ exit(0);
+}
+
+
+/*----------------------------------------------------------------------------*
+ | Routine: char * operand (& argc, & argv)
+ |
+ | Results: returns address of the operand given with a command-line
+ | option. It uses either "-Xoperand" or "-X operand", whichever
+ | is present. The program is terminated if no option is present.
+ |
+ | Side Efct: argc and argv are updated as necessary.
+ *----------------------------------------------------------------------------*/
+
+char *operand(argcp, argvp)
+int * argcp;
+char ***argvp;
+{
+ if ((**argvp)[2]) return(**argvp + 2); /* operand immediately follows */
+ if ((--*argcp) <= 0) { /* no operand */
+ error (FATAL, "command-line option operand missing.");
+ }
+ return(*(++(*argvp))); /* operand next word */
+}
+
+
+outlist(s) /* process list of page numbers to be printed */
+char *s;
+{
+ int n1, n2;
+#ifdef DEBUGABLE
+ int i;
+#endif
+
+ nolist = 0;
+ while (*s) {
+ n1 = 0;
+ if (isdigit(*s))
+ do
+ n1 = 10 * n1 + *s++ - '0';
+ while (isdigit(*s));
+ else
+ n1 = -9999;
+ n2 = n1;
+ if (*s == '-') {
+ s++;
+ n2 = 0;
+ if (isdigit(*s))
+ do
+ n2 = 10 * n2 + *s++ - '0';
+ while (isdigit(*s));
+ else
+ n2 = 9999;
+ }
+ olist[nolist++] = n1;
+ olist[nolist++] = n2;
+ if (*s != '\0')
+ s++;
+ }
+ olist[nolist] = 0;
+#ifdef DEBUGABLE
+ if (dbg)
+ for (i=0; i<nolist; i += 2)
+ fprintf(stderr,"%3d %3d\n", olist[i], olist[i+1]);
+#endif
+}
+
+
+
+/*VARARGS1*/
+
+error(f, s, a1, a2, a3, a4, a5, a6, a7)
+{
+ fprintf(stderr, "dver: ");
+ /*NOSTRICT*/
+ fprintf(stderr, s, a1, a2, a3, a4, a5, a6, a7);
+ fprintf(stderr, "\n");
+ if (f) exit(ABORT);
+}
+
+
+
+
+/*VARARGS*/
+/*NOSTRICT*/
+
+eprintf(s1, s2, s3, s4, s5, s6, s7, s8)
+{
+ /*NOSTRICT*/
+ fprintf(stderr, s1, s2, s3, s4, s5, s6, s7, s8);
+}
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