1 /*
2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #ifndef lint
9 static char copyright[] =
10 "@(#) Copyright (c) 1980, 1993\n\
11 The Regents of the University of California. All rights reserved.\n";
12 #endif /* not lint */
13
14 #ifndef lint
15 static char sccsid[] = "@(#)vfontedpr.c 8.1 (Berkeley) 06/06/93";
16 #endif /* not lint */
17
18 #include <sys/types.h>
19 #include <sys/stat.h>
20 #include <time.h>
21 #include <ctype.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <stdio.h>
25 #include "pathnames.h"
26 #include "extern.h"
27
28 #define FALSE 0
29 #define TRUE !(FALSE)
30 #define NIL 0
31 #define STANDARD 0
32 #define ALTERNATE 1
33
34 /*
35 * Vfontedpr.
36 *
37 * Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
38 *
39 */
40
41 #define STRLEN 10 /* length of strings introducing things */
42 #define PNAMELEN 40 /* length of a function/procedure name */
43 #define PSMAX 20 /* size of procedure name stacking */
44
45 static int iskw __P((char *));
46 static boolean isproc __P((char *));
47 static void putKcp __P((char *, char *, boolean));
48 static void putScp __P((char *));
49 static void putcp __P((int));
50 static int tabs __P((char *, char *));
51 static int width __P((char *, char *));
52
53 /*
54 * The state variables
55 */
56
57 static boolean filter = FALSE; /* act as a filter (like eqn) */
58 static boolean inchr; /* in a string constant */
59 static boolean incomm; /* in a comment of the primary type */
60 static boolean idx = FALSE; /* form an index */
61 static boolean instr; /* in a string constant */
62 static boolean nokeyw = FALSE; /* no keywords being flagged */
63 static boolean pass = FALSE; /*
64 * when acting as a filter, pass indicates
65 * whether we are currently processing
66 * input.
67 */
68
69 static int blklevel; /* current nesting level */
70 static int comtype; /* type of comment */
71 static char *defsfile[2] = { _PATH_VGRINDEFS, 0 };
72 /* name of language definitions file */
73 static int margin;
74 static int plstack[PSMAX]; /* the procedure nesting level stack */
75 static char pname[BUFSIZ+1];
76 static boolean prccont; /* continue last procedure */
77 static int psptr; /* the stack index of the current procedure */
78 static char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */
79
80 /*
81 * The language specific globals
82 */
83
84 char *l_acmbeg; /* string introducing a comment */
85 char *l_acmend; /* string ending a comment */
86 char *l_blkbeg; /* string begining of a block */
87 char *l_blkend; /* string ending a block */
88 char *l_chrbeg; /* delimiter for character constant */
89 char *l_chrend; /* delimiter for character constant */
90 char *l_combeg; /* string introducing a comment */
91 char *l_comend; /* string ending a comment */
92 char l_escape; /* character used to escape characters */
93 char *l_keywds[BUFSIZ/2]; /* keyword table address */
94 char *l_prcbeg; /* regular expr for procedure begin */
95 char *l_strbeg; /* delimiter for string constant */
96 char *l_strend; /* delimiter for string constant */
97 boolean l_toplex; /* procedures only defined at top lex level */
98 char *language = "c"; /* the language indicator */
99
100 #define ps(x) printf("%s", x)
101
102 void
main(argc,argv)103 main(argc, argv)
104 int argc;
105 char *argv[];
106 {
107 char *fname = "";
108 struct stat stbuf;
109 char buf[BUFSIZ];
110 char *defs;
111 int needbp = 0;
112
113 argc--, argv++;
114 do {
115 char *cp;
116 int i;
117
118 if (argc > 0) {
119 if (!strcmp(argv[0], "-h")) {
120 if (argc == 1) {
121 printf("'ds =H\n");
122 argc = 0;
123 goto rest;
124 }
125 printf("'ds =H %s\n", argv[1]);
126 argc--, argv++;
127 argc--, argv++;
128 if (argc > 0)
129 continue;
130 goto rest;
131 }
132
133 /* act as a filter like eqn */
134 if (!strcmp(argv[0], "-f")) {
135 filter++;
136 argv[0] = argv[argc-1];
137 argv[argc-1] = "-";
138 continue;
139 }
140
141 /* take input from the standard place */
142 if (!strcmp(argv[0], "-")) {
143 argc = 0;
144 goto rest;
145 }
146
147 /* build an index */
148 if (!strcmp(argv[0], "-x")) {
149 idx++;
150 argv[0] = "-n";
151 }
152
153 /* indicate no keywords */
154 if (!strcmp(argv[0], "-n")) {
155 nokeyw++;
156 argc--, argv++;
157 continue;
158 }
159
160 /* specify the font size */
161 if (!strncmp(argv[0], "-s", 2)) {
162 i = 0;
163 cp = argv[0] + 2;
164 while (*cp)
165 i = i * 10 + (*cp++ - '0');
166 printf("'ps %d\n'vs %d\n", i, i+1);
167 argc--, argv++;
168 continue;
169 }
170
171 /* specify the language */
172 if (!strncmp(argv[0], "-l", 2)) {
173 language = argv[0]+2;
174 argc--, argv++;
175 continue;
176 }
177
178 /* specify the language description file */
179 if (!strncmp(argv[0], "-d", 2)) {
180 defsfile[0] = argv[1];
181 argc--, argv++;
182 argc--, argv++;
183 continue;
184 }
185
186 /* open the file for input */
187 if (freopen(argv[0], "r", stdin) == NULL) {
188 perror(argv[0]);
189 exit(1);
190 }
191 if (idx)
192 printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
193 fname = argv[0];
194 argc--, argv++;
195 }
196 rest:
197
198 /*
199 * get the language definition from the defs file
200 */
201 i = cgetent(&defs, defsfile, language);
202 if (i == -1) {
203 fprintf (stderr, "no entry for language %s\n", language);
204 exit (0);
205 } else if (i == -2) { fprintf(stderr,
206 "cannot find vgrindefs file %s\n", defsfile[0]);
207 exit (0);
208 } else if (i == -3) { fprintf(stderr,
209 "potential reference loop detected in vgrindefs file %s\n",
210 defsfile[0]);
211 exit(0);
212 }
213 if (cgetustr(defs, "kw", &cp) == -1)
214 nokeyw = TRUE;
215 else {
216 char **cpp;
217
218 cpp = l_keywds;
219 while (*cp) {
220 while (*cp == ' ' || *cp =='\t')
221 *cp++ = NULL;
222 if (*cp)
223 *cpp++ = cp;
224 while (*cp != ' ' && *cp != '\t' && *cp)
225 cp++;
226 }
227 *cpp = NIL;
228 }
229 cgetustr(defs, "pb", &cp);
230 l_prcbeg = convexp(cp);
231 cgetustr(defs, "cb", &cp);
232 l_combeg = convexp(cp);
233 cgetustr(defs, "ce", &cp);
234 l_comend = convexp(cp);
235 cgetustr(defs, "ab", &cp);
236 l_acmbeg = convexp(cp);
237 cgetustr(defs, "ae", &cp);
238 l_acmend = convexp(cp);
239 cgetustr(defs, "sb", &cp);
240 l_strbeg = convexp(cp);
241 cgetustr(defs, "se", &cp);
242 l_strend = convexp(cp);
243 cgetustr(defs, "bb", &cp);
244 l_blkbeg = convexp(cp);
245 cgetustr(defs, "be", &cp);
246 l_blkend = convexp(cp);
247 cgetustr(defs, "lb", &cp);
248 l_chrbeg = convexp(cp);
249 cgetustr(defs, "le", &cp);
250 l_chrend = convexp(cp);
251 l_escape = '\\';
252 l_onecase = (cgetcap(defs, "oc", ':') != NULL);
253 l_toplex = (cgetcap(defs, "tl", ':') != NULL);
254
255 /* initialize the program */
256
257 incomm = FALSE;
258 instr = FALSE;
259 inchr = FALSE;
260 _escaped = FALSE;
261 blklevel = 0;
262 for (psptr=0; psptr<PSMAX; psptr++) {
263 pstack[psptr][0] = NULL;
264 plstack[psptr] = 0;
265 }
266 psptr = -1;
267 ps("'-F\n");
268 if (!filter) {
269 printf(".ds =F %s\n", fname);
270 ps("'wh 0 vH\n");
271 ps("'wh -1i vF\n");
272 }
273 if (needbp) {
274 needbp = 0;
275 printf(".()\n");
276 printf(".bp\n");
277 }
278 if (!filter) {
279 fstat(fileno(stdin), &stbuf);
280 cp = ctime(&stbuf.st_mtime);
281 cp[16] = '\0';
282 cp[24] = '\0';
283 printf(".ds =M %s %s\n", cp+4, cp+20);
284 }
285
286 /*
287 * MAIN LOOP!!!
288 */
289 while (fgets(buf, sizeof buf, stdin) != NULL) {
290 if (buf[0] == '\f') {
291 printf(".bp\n");
292 }
293 if (buf[0] == '.') {
294 printf("%s", buf);
295 if (!strncmp (buf+1, "vS", 2))
296 pass = TRUE;
297 if (!strncmp (buf+1, "vE", 2))
298 pass = FALSE;
299 continue;
300 }
301 prccont = FALSE;
302 if (!filter || pass)
303 putScp(buf);
304 else
305 printf("%s", buf);
306 if (prccont && (psptr >= 0)) {
307 ps("'FC ");
308 ps(pstack[psptr]);
309 ps("\n");
310 }
311 #ifdef DEBUG
312 printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
313 #endif
314 margin = 0;
315 }
316 needbp = 1;
317 } while (argc > 0);
318 exit(0);
319 }
320
321 #define isidchr(c) (isalnum(c) || (c) == '_')
322
323 static void
putScp(os)324 putScp(os)
325 char *os;
326 {
327 register char *s = os; /* pointer to unmatched string */
328 char dummy[BUFSIZ]; /* dummy to be used by expmatch */
329 char *comptr; /* end of a comment delimiter */
330 char *acmptr; /* end of a comment delimiter */
331 char *strptr; /* end of a string delimiter */
332 char *chrptr; /* end of a character const delimiter */
333 char *blksptr; /* end of a lexical block start */
334 char *blkeptr; /* end of a lexical block end */
335
336 _start = os; /* remember the start for expmatch */
337 _escaped = FALSE;
338 if (nokeyw || incomm || instr)
339 goto skip;
340 if (isproc(s)) {
341 ps("'FN ");
342 ps(pname);
343 ps("\n");
344 if (psptr < PSMAX) {
345 ++psptr;
346 strncpy (pstack[psptr], pname, PNAMELEN);
347 pstack[psptr][PNAMELEN] = NULL;
348 plstack[psptr] = blklevel;
349 }
350 }
351 skip:
352 do {
353 /* check for string, comment, blockstart, etc */
354 if (!incomm && !instr && !inchr) {
355
356 blkeptr = expmatch (s, l_blkend, dummy);
357 blksptr = expmatch (s, l_blkbeg, dummy);
358 comptr = expmatch (s, l_combeg, dummy);
359 acmptr = expmatch (s, l_acmbeg, dummy);
360 strptr = expmatch (s, l_strbeg, dummy);
361 chrptr = expmatch (s, l_chrbeg, dummy);
362
363 /* start of a comment? */
364 if (comptr != NIL)
365 if ((comptr < strptr || strptr == NIL)
366 && (comptr < acmptr || acmptr == NIL)
367 && (comptr < chrptr || chrptr == NIL)
368 && (comptr < blksptr || blksptr == NIL)
369 && (comptr < blkeptr || blkeptr == NIL)) {
370 putKcp (s, comptr-1, FALSE);
371 s = comptr;
372 incomm = TRUE;
373 comtype = STANDARD;
374 if (s != os)
375 ps ("\\c");
376 ps ("\\c\n'+C\n");
377 continue;
378 }
379
380 /* start of a comment? */
381 if (acmptr != NIL)
382 if ((acmptr < strptr || strptr == NIL)
383 && (acmptr < chrptr || chrptr == NIL)
384 && (acmptr < blksptr || blksptr == NIL)
385 && (acmptr < blkeptr || blkeptr == NIL)) {
386 putKcp (s, acmptr-1, FALSE);
387 s = acmptr;
388 incomm = TRUE;
389 comtype = ALTERNATE;
390 if (s != os)
391 ps ("\\c");
392 ps ("\\c\n'+C\n");
393 continue;
394 }
395
396 /* start of a string? */
397 if (strptr != NIL)
398 if ((strptr < chrptr || chrptr == NIL)
399 && (strptr < blksptr || blksptr == NIL)
400 && (strptr < blkeptr || blkeptr == NIL)) {
401 putKcp (s, strptr-1, FALSE);
402 s = strptr;
403 instr = TRUE;
404 continue;
405 }
406
407 /* start of a character string? */
408 if (chrptr != NIL)
409 if ((chrptr < blksptr || blksptr == NIL)
410 && (chrptr < blkeptr || blkeptr == NIL)) {
411 putKcp (s, chrptr-1, FALSE);
412 s = chrptr;
413 inchr = TRUE;
414 continue;
415 }
416
417 /* end of a lexical block */
418 if (blkeptr != NIL) {
419 if (blkeptr < blksptr || blksptr == NIL) {
420 putKcp (s, blkeptr - 1, FALSE);
421 s = blkeptr;
422 blklevel--;
423 if (psptr >= 0 && plstack[psptr] >= blklevel) {
424
425 /* end of current procedure */
426 if (s != os)
427 ps ("\\c");
428 ps ("\\c\n'-F\n");
429 blklevel = plstack[psptr];
430
431 /* see if we should print the last proc name */
432 if (--psptr >= 0)
433 prccont = TRUE;
434 else
435 psptr = -1;
436 }
437 continue;
438 }
439 }
440
441 /* start of a lexical block */
442 if (blksptr != NIL) {
443 putKcp (s, blksptr - 1, FALSE);
444 s = blksptr;
445 blklevel++;
446 continue;
447 }
448
449 /* check for end of comment */
450 } else if (incomm) {
451 comptr = expmatch (s, l_comend, dummy);
452 acmptr = expmatch (s, l_acmend, dummy);
453 if (((comtype == STANDARD) && (comptr != NIL)) ||
454 ((comtype == ALTERNATE) && (acmptr != NIL))) {
455 if (comtype == STANDARD) {
456 putKcp (s, comptr-1, TRUE);
457 s = comptr;
458 } else {
459 putKcp (s, acmptr-1, TRUE);
460 s = acmptr;
461 }
462 incomm = FALSE;
463 ps("\\c\n'-C\n");
464 continue;
465 } else {
466 putKcp (s, s + strlen(s) -1, TRUE);
467 s = s + strlen(s);
468 continue;
469 }
470
471 /* check for end of string */
472 } else if (instr) {
473 if ((strptr = expmatch (s, l_strend, dummy)) != NIL) {
474 putKcp (s, strptr-1, TRUE);
475 s = strptr;
476 instr = FALSE;
477 continue;
478 } else {
479 putKcp (s, s+strlen(s)-1, TRUE);
480 s = s + strlen(s);
481 continue;
482 }
483
484 /* check for end of character string */
485 } else if (inchr) {
486 if ((chrptr = expmatch (s, l_chrend, dummy)) != NIL) {
487 putKcp (s, chrptr-1, TRUE);
488 s = chrptr;
489 inchr = FALSE;
490 continue;
491 } else {
492 putKcp (s, s+strlen(s)-1, TRUE);
493 s = s + strlen(s);
494 continue;
495 }
496 }
497
498 /* print out the line */
499 putKcp (s, s + strlen(s) -1, FALSE);
500 s = s + strlen(s);
501 } while (*s);
502 }
503
504 static void
putKcp(start,end,force)505 putKcp (start, end, force)
506 char *start; /* start of string to write */
507 char *end; /* end of string to write */
508 boolean force; /* true if we should force nokeyw */
509 {
510 int i;
511 int xfld = 0;
512
513 while (start <= end) {
514 if (idx) {
515 if (*start == ' ' || *start == '\t') {
516 if (xfld == 0)
517 printf("");
518 printf("\t");
519 xfld = 1;
520 while (*start == ' ' || *start == '\t')
521 start++;
522 continue;
523 }
524 }
525
526 /* take care of nice tab stops */
527 if (*start == '\t') {
528 while (*start == '\t')
529 start++;
530 i = tabs(_start, start) - margin / 8;
531 printf("\\h'|%dn'", i * 10 + 1 - margin % 8);
532 continue;
533 }
534
535 if (!nokeyw && !force)
536 if ((*start == '#' || isidchr(*start))
537 && (start == _start || !isidchr(start[-1]))) {
538 i = iskw(start);
539 if (i > 0) {
540 ps("\\*(+K");
541 do
542 putcp(*start++);
543 while (--i > 0);
544 ps("\\*(-K");
545 continue;
546 }
547 }
548
549 putcp (*start++);
550 }
551 }
552
553
554 static int
tabs(s,os)555 tabs(s, os)
556 char *s, *os;
557 {
558
559 return (width(s, os) / 8);
560 }
561
562 static int
width(s,os)563 width(s, os)
564 register char *s, *os;
565 {
566 register int i = 0;
567
568 while (s < os) {
569 if (*s == '\t') {
570 i = (i + 8) &~ 7;
571 s++;
572 continue;
573 }
574 if (*s < ' ')
575 i += 2;
576 else
577 i++;
578 s++;
579 }
580 return (i);
581 }
582
583 static void
putcp(c)584 putcp(c)
585 register int c;
586 {
587
588 switch(c) {
589
590 case 0:
591 break;
592
593 case '\f':
594 break;
595
596 case '{':
597 ps("\\*(+K{\\*(-K");
598 break;
599
600 case '}':
601 ps("\\*(+K}\\*(-K");
602 break;
603
604 case '\\':
605 ps("\\e");
606 break;
607
608 case '_':
609 ps("\\*_");
610 break;
611
612 case '-':
613 ps("\\*-");
614 break;
615
616 case '`':
617 ps("\\`");
618 break;
619
620 case '\'':
621 ps("\\'");
622 break;
623
624 case '.':
625 ps("\\&.");
626 break;
627
628 case '*':
629 ps("\\fI*\\fP");
630 break;
631
632 case '/':
633 ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
634 break;
635
636 default:
637 if (c < 040)
638 putchar('^'), c |= '@';
639 case '\t':
640 case '\n':
641 putchar(c);
642 }
643 }
644
645 /*
646 * look for a process beginning on this line
647 */
648 static boolean
isproc(s)649 isproc(s)
650 char *s;
651 {
652 pname[0] = NULL;
653 if (!l_toplex || blklevel == 0)
654 if (expmatch (s, l_prcbeg, pname) != NIL) {
655 return (TRUE);
656 }
657 return (FALSE);
658 }
659
660
661 /* iskw - check to see if the next word is a keyword
662 */
663
664 static int
iskw(s)665 iskw(s)
666 register char *s;
667 {
668 register char **ss = l_keywds;
669 register int i = 1;
670 register char *cp = s;
671
672 while (++cp, isidchr(*cp))
673 i++;
674 while (cp = *ss++)
675 if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
676 return (i);
677 return (0);
678 }
679
680