1 /*
2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31
32 __FBSDID("$FreeBSD$");
33
34 #ifndef lint
35 static const char copyright[] =
36 "@(#) Copyright (c) 1980, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
38 #endif
39
40 #ifndef lint
41 static const char sccsid[] = "@(#)vfontedpr.c 8.1 (Berkeley) 6/6/93";
42 #endif
43
44 #include <sys/types.h>
45 #include <sys/stat.h>
46 #include <ctype.h>
47 #include <err.h>
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <stdbool.h>
51 #include <string.h>
52 #include <time.h>
53 #include "pathnames.h"
54 #include "extern.h"
55
56 #define STANDARD 0
57 #define ALTERNATE 1
58
59 /*
60 * Vfontedpr.
61 *
62 * Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
63 *
64 */
65
66 #define STRLEN 10 /* length of strings introducing things */
67 #define PNAMELEN 40 /* length of a function/procedure name */
68 #define PSMAX 20 /* size of procedure name stacking */
69
70 static int iskw(char *);
71 static bool isproc(char *);
72 static void putKcp(char *, char *, bool);
73 static void putScp(char *);
74 static void putcp(int);
75 static int tabs(char *, char *);
76 static int width(char *, char *);
77
78 /*
79 * The state variables
80 */
81
82 static bool filter = false; /* act as a filter (like eqn) */
83 static bool inchr; /* in a string constant */
84 static bool incomm; /* in a comment of the primary type */
85 static bool idx = false; /* form an index */
86 static bool instr; /* in a string constant */
87 static bool nokeyw = false; /* no keywords being flagged */
88 static bool pass = false; /*
89 * when acting as a filter, pass indicates
90 * whether we are currently processing
91 * input.
92 */
93
94 static int blklevel; /* current nesting level */
95 static int comtype; /* type of comment */
96 static char * defsfile[2] = { _PATH_VGRINDEFS, 0 };
97 /* name of language definitions file */
98 static int margin;
99 static int plstack[PSMAX]; /* the procedure nesting level stack */
100 static char pname[BUFSIZ+1];
101 static bool prccont; /* continue last procedure */
102 static int psptr; /* the stack index of the current procedure */
103 static char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */
104
105 /*
106 * The language specific globals
107 */
108
109 char *l_acmbeg; /* string introducing a comment */
110 char *l_acmend; /* string ending a comment */
111 char *l_blkbeg; /* string beginning of a block */
112 char *l_blkend; /* string ending a block */
113 char *l_chrbeg; /* delimiter for character constant */
114 char *l_chrend; /* delimiter for character constant */
115 char *l_combeg; /* string introducing a comment */
116 char *l_comend; /* string ending a comment */
117 char l_escape; /* character used to escape characters */
118 char *l_keywds[BUFSIZ/2]; /* keyword table address */
119 char *l_nocom; /* regexp for non-comments */
120 char *l_prcbeg; /* regular expr for procedure begin */
121 char *l_strbeg; /* delimiter for string constant */
122 char *l_strend; /* delimiter for string constant */
123 bool l_toplex; /* procedures only defined at top lex level */
124 const char *language = "c"; /* the language indicator */
125
126 #define ps(x) printf("%s", x)
127 static char minus[] = "-";
128 static char minusn[] = "-n";
129
130 int
main(int argc,char ** argv)131 main(int argc, char **argv)
132 {
133 const char *fname = "";
134 struct stat stbuf;
135 char buf[BUFSIZ];
136 char *defs;
137 int needbp = 0;
138
139 argc--, argv++;
140 do {
141 char *cp;
142 int i;
143
144 if (argc > 0) {
145 if (!strcmp(argv[0], "-h")) {
146 if (argc == 1) {
147 printf("'ds =H\n");
148 argc = 0;
149 goto rest;
150 }
151 printf("'ds =H %s\n", argv[1]);
152 argc--, argv++;
153 argc--, argv++;
154 if (argc > 0)
155 continue;
156 goto rest;
157 }
158
159 /* act as a filter like eqn */
160 if (!strcmp(argv[0], "-f")) {
161 filter = true;
162 argv[0] = argv[argc-1];
163 argv[argc-1] = minus;
164 continue;
165 }
166
167 /* take input from the standard place */
168 if (!strcmp(argv[0], "-")) {
169 argc = 0;
170 goto rest;
171 }
172
173 /* build an index */
174 if (!strcmp(argv[0], "-x")) {
175 idx = true;
176 argv[0] = minusn;
177 }
178
179 /* indicate no keywords */
180 if (!strcmp(argv[0], "-n")) {
181 nokeyw = true;
182 argc--, argv++;
183 continue;
184 }
185
186 /* specify the font size */
187 if (!strncmp(argv[0], "-s", 2)) {
188 i = 0;
189 cp = argv[0] + 2;
190 while (*cp)
191 i = i * 10 + (*cp++ - '0');
192 printf("'ps %d\n'vs %d\n", i, i+1);
193 argc--, argv++;
194 continue;
195 }
196
197 /* specify the language */
198 if (!strncmp(argv[0], "-l", 2)) {
199 language = argv[0]+2;
200 argc--, argv++;
201 continue;
202 }
203
204 /* specify the language description file */
205 if (!strncmp(argv[0], "-d", 2)) {
206 defsfile[0] = argv[1];
207 argc--, argv++;
208 argc--, argv++;
209 continue;
210 }
211
212 /* open the file for input */
213 if (freopen(argv[0], "r", stdin) == NULL)
214 err(1, "%s", argv[0]);
215 if (idx)
216 printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
217 fname = argv[0];
218 argc--, argv++;
219 }
220 rest:
221
222 /*
223 * get the language definition from the defs file
224 */
225 i = cgetent(&defs, defsfile, language);
226 if (i == -1) {
227 fprintf (stderr, "no entry for language %s\n", language);
228 exit(0);
229 } else if (i == -2) { fprintf(stderr,
230 "cannot find vgrindefs file %s\n", defsfile[0]);
231 exit(0);
232 } else if (i == -3) { fprintf(stderr,
233 "potential reference loop detected in vgrindefs file %s\n",
234 defsfile[0]);
235 exit(0);
236 }
237 if (cgetustr(defs, "kw", &cp) == -1)
238 nokeyw = true;
239 else {
240 char **cpp;
241
242 cpp = l_keywds;
243 while (*cp) {
244 while (*cp == ' ' || *cp =='\t')
245 *cp++ = '\0';
246 if (*cp)
247 *cpp++ = cp;
248 while (*cp != ' ' && *cp != '\t' && *cp)
249 cp++;
250 }
251 *cpp = NULL;
252 }
253 cgetustr(defs, "pb", &cp);
254 l_prcbeg = convexp(cp);
255 cgetustr(defs, "cb", &cp);
256 l_combeg = convexp(cp);
257 cgetustr(defs, "ce", &cp);
258 l_comend = convexp(cp);
259 cgetustr(defs, "ab", &cp);
260 l_acmbeg = convexp(cp);
261 cgetustr(defs, "ae", &cp);
262 l_acmend = convexp(cp);
263 cgetustr(defs, "sb", &cp);
264 l_strbeg = convexp(cp);
265 cgetustr(defs, "se", &cp);
266 l_strend = convexp(cp);
267 cgetustr(defs, "bb", &cp);
268 l_blkbeg = convexp(cp);
269 cgetustr(defs, "be", &cp);
270 l_blkend = convexp(cp);
271 cgetustr(defs, "lb", &cp);
272 l_chrbeg = convexp(cp);
273 cgetustr(defs, "le", &cp);
274 l_chrend = convexp(cp);
275 if (cgetustr(defs, "nc", &cp) >= 0)
276 l_nocom = convexp(cp);
277 l_escape = '\\';
278 l_onecase = (cgetcap(defs, "oc", ':') != NULL);
279 l_toplex = (cgetcap(defs, "tl", ':') != NULL);
280
281 /* initialize the program */
282
283 incomm = false;
284 instr = false;
285 inchr = false;
286 _escaped = false;
287 blklevel = 0;
288 for (psptr=0; psptr<PSMAX; psptr++) {
289 pstack[psptr][0] = '\0';
290 plstack[psptr] = 0;
291 }
292 psptr = -1;
293 ps("'-F\n");
294 if (!filter) {
295 printf(".ds =F %s\n", fname);
296 ps("'wh 0 vH\n");
297 ps("'wh -1i vF\n");
298 }
299 if (needbp) {
300 needbp = 0;
301 printf(".()\n");
302 printf(".bp\n");
303 }
304 if (!filter) {
305 fstat(fileno(stdin), &stbuf);
306 cp = ctime(&stbuf.st_mtime);
307 cp[16] = '\0';
308 cp[24] = '\0';
309 printf(".ds =M %s %s\n", cp+4, cp+20);
310 }
311
312 /*
313 * MAIN LOOP!!!
314 */
315 while (fgets(buf, sizeof buf, stdin) != NULL) {
316 if (buf[0] == '\f') {
317 printf(".bp\n");
318 }
319 if (buf[0] == '.') {
320 printf("%s", buf);
321 if (!strncmp (buf+1, "vS", 2))
322 pass = true;
323 if (!strncmp (buf+1, "vE", 2))
324 pass = false;
325 continue;
326 }
327 prccont = false;
328 if (!filter || pass)
329 putScp(buf);
330 else
331 printf("%s", buf);
332 if (prccont && (psptr >= 0)) {
333 ps("'FC ");
334 ps(pstack[psptr]);
335 ps("\n");
336 }
337 #ifdef DEBUG
338 printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
339 #endif
340 margin = 0;
341 }
342 needbp = 1;
343 } while (argc > 0);
344 exit(0);
345 }
346
347 #define isidchr(c) (isalnum(c) || (c) == '_')
348
349 static void
putScp(char * os)350 putScp(char *os)
351 {
352 register char *s = os; /* pointer to unmatched string */
353 char dummy[BUFSIZ]; /* dummy to be used by expmatch */
354 char *comptr; /* end of a comment delimiter */
355 char *acmptr; /* end of a comment delimiter */
356 char *strptr; /* end of a string delimiter */
357 char *chrptr; /* end of a character const delimiter */
358 char *blksptr; /* end of a lexical block start */
359 char *blkeptr; /* end of a lexical block end */
360 char *nocomptr; /* end of a non-comment delimiter */
361
362 s_start = os; /* remember the start for expmatch */
363 _escaped = false;
364 if (nokeyw || incomm || instr)
365 goto skip;
366 if (isproc(s)) {
367 ps("'FN ");
368 ps(pname);
369 ps("\n");
370 if (psptr < PSMAX) {
371 ++psptr;
372 strncpy (pstack[psptr], pname, PNAMELEN);
373 pstack[psptr][PNAMELEN] = '\0';
374 plstack[psptr] = blklevel;
375 }
376 }
377 skip:
378 do {
379 /* check for string, comment, blockstart, etc */
380 if (!incomm && !instr && !inchr) {
381
382 blkeptr = expmatch(s, l_blkend, dummy);
383 blksptr = expmatch(s, l_blkbeg, dummy);
384 comptr = expmatch(s, l_combeg, dummy);
385 acmptr = expmatch(s, l_acmbeg, dummy);
386 strptr = expmatch(s, l_strbeg, dummy);
387 chrptr = expmatch(s, l_chrbeg, dummy);
388 nocomptr = expmatch (s, l_nocom, dummy);
389
390 /* start of non-comment? */
391 if (nocomptr != NULL)
392 if ((nocomptr <= comptr || comptr == NULL)
393 && (nocomptr <= acmptr || acmptr == NULL)) {
394 /* continue after non-comment */
395 putKcp (s, nocomptr-1, false);
396 s = nocomptr;
397 continue;
398 }
399
400 /* start of a comment? */
401 if (comptr != NULL)
402 if ((comptr < strptr || strptr == NULL)
403 && (comptr < acmptr || acmptr == NULL)
404 && (comptr < chrptr || chrptr == NULL)
405 && (comptr < blksptr || blksptr == NULL)
406 && (comptr < blkeptr || blkeptr == NULL)) {
407 putKcp(s, comptr-1, false);
408 s = comptr;
409 incomm = true;
410 comtype = STANDARD;
411 if (s != os)
412 ps("\\c");
413 ps("\\c\n'+C\n");
414 continue;
415 }
416
417 /* start of a comment? */
418 if (acmptr != NULL)
419 if ((acmptr < strptr || strptr == NULL)
420 && (acmptr < chrptr || chrptr == NULL)
421 && (acmptr < blksptr || blksptr == NULL)
422 && (acmptr < blkeptr || blkeptr == NULL)) {
423 putKcp(s, acmptr-1, false);
424 s = acmptr;
425 incomm = true;
426 comtype = ALTERNATE;
427 if (s != os)
428 ps("\\c");
429 ps("\\c\n'+C\n");
430 continue;
431 }
432
433 /* start of a string? */
434 if (strptr != NULL)
435 if ((strptr < chrptr || chrptr == NULL)
436 && (strptr < blksptr || blksptr == NULL)
437 && (strptr < blkeptr || blkeptr == NULL)) {
438 putKcp(s, strptr-1, false);
439 s = strptr;
440 instr = true;
441 continue;
442 }
443
444 /* start of a character string? */
445 if (chrptr != NULL)
446 if ((chrptr < blksptr || blksptr == NULL)
447 && (chrptr < blkeptr || blkeptr == NULL)) {
448 putKcp(s, chrptr-1, false);
449 s = chrptr;
450 inchr = true;
451 continue;
452 }
453
454 /* end of a lexical block */
455 if (blkeptr != NULL) {
456 if (blkeptr < blksptr || blksptr == NULL) {
457 putKcp(s, blkeptr - 1, false);
458 s = blkeptr;
459 if (blklevel > 0 /* sanity */)
460 blklevel--;
461 if (psptr >= 0 && plstack[psptr] >= blklevel) {
462
463 /* end of current procedure */
464 if (s != os)
465 ps("\\c");
466 ps("\\c\n'-F\n");
467 blklevel = plstack[psptr];
468
469 /* see if we should print the last proc name */
470 if (--psptr >= 0)
471 prccont = true;
472 else
473 psptr = -1;
474 }
475 continue;
476 }
477 }
478
479 /* start of a lexical block */
480 if (blksptr != NULL) {
481 putKcp(s, blksptr - 1, false);
482 s = blksptr;
483 blklevel++;
484 continue;
485 }
486
487 /* check for end of comment */
488 } else if (incomm) {
489 comptr = expmatch(s, l_comend, dummy);
490 acmptr = expmatch(s, l_acmend, dummy);
491 if (((comtype == STANDARD) && (comptr != NULL)) ||
492 ((comtype == ALTERNATE) && (acmptr != NULL))) {
493 if (comtype == STANDARD) {
494 putKcp(s, comptr-1, true);
495 s = comptr;
496 } else {
497 putKcp(s, acmptr-1, true);
498 s = acmptr;
499 }
500 incomm = false;
501 ps("\\c\n'-C\n");
502 continue;
503 } else {
504 putKcp(s, s + strlen(s) -1, true);
505 s = s + strlen(s);
506 continue;
507 }
508
509 /* check for end of string */
510 } else if (instr) {
511 if ((strptr = expmatch(s, l_strend, dummy)) != NULL) {
512 putKcp(s, strptr-1, true);
513 s = strptr;
514 instr = false;
515 continue;
516 } else {
517 putKcp(s, s+strlen(s)-1, true);
518 s = s + strlen(s);
519 continue;
520 }
521
522 /* check for end of character string */
523 } else if (inchr) {
524 if ((chrptr = expmatch(s, l_chrend, dummy)) != NULL) {
525 putKcp(s, chrptr-1, true);
526 s = chrptr;
527 inchr = false;
528 continue;
529 } else {
530 putKcp(s, s+strlen(s)-1, true);
531 s = s + strlen(s);
532 continue;
533 }
534 }
535
536 /* print out the line */
537 putKcp(s, s + strlen(s) -1, false);
538 s = s + strlen(s);
539 } while (*s);
540 }
541
542 /*
543 * start: start of string to write
544 * end: end of string to write
545 * force: true if we should force nokeyw
546 */
547 static void
putKcp(char * start,char * end,bool force)548 putKcp(char *start, char *end, bool force)
549 {
550 int i;
551 int xfld = 0;
552
553 while (start <= end) {
554 if (idx) {
555 if (*start == ' ' || *start == '\t') {
556 if (xfld == 0)
557 printf("\001");
558 printf("\t");
559 xfld = 1;
560 while (*start == ' ' || *start == '\t')
561 start++;
562 continue;
563 }
564 }
565
566 /* take care of nice tab stops */
567 if (*start == '\t') {
568 while (*start == '\t')
569 start++;
570 i = tabs(s_start, start) - margin / 8;
571 printf("\\h'|%dn'", i * 10 + 1 - margin % 8);
572 continue;
573 }
574
575 if (!nokeyw && !force)
576 if ((*start == '#' || isidchr(*start))
577 && (start == s_start || !isidchr(start[-1]))) {
578 i = iskw(start);
579 if (i > 0) {
580 ps("\\*(+K");
581 do
582 putcp((unsigned char)*start++);
583 while (--i > 0);
584 ps("\\*(-K");
585 continue;
586 }
587 }
588
589 putcp((unsigned char)*start++);
590 }
591 }
592
593
594 static int
tabs(char * s,char * os)595 tabs(char *s, char *os)
596 {
597
598 return (width(s, os) / 8);
599 }
600
601 static int
width(register char * s,register char * os)602 width(register char *s, register char *os)
603 {
604 register int i = 0;
605
606 while (s < os) {
607 if (*s == '\t') {
608 i = (i + 8) &~ 7;
609 s++;
610 continue;
611 }
612 if (*s < ' ')
613 i += 2;
614 else
615 i++;
616 s++;
617 }
618 return (i);
619 }
620
621 static void
putcp(register int c)622 putcp(register int c)
623 {
624
625 switch(c) {
626
627 case 0:
628 break;
629
630 case '\f':
631 break;
632
633 case '\r':
634 break;
635
636 case '{':
637 ps("\\*(+K{\\*(-K");
638 break;
639
640 case '}':
641 ps("\\*(+K}\\*(-K");
642 break;
643
644 case '\\':
645 ps("\\e");
646 break;
647
648 case '_':
649 ps("\\*_");
650 break;
651
652 case '-':
653 ps("\\*-");
654 break;
655
656 case '`':
657 ps("\\`");
658 break;
659
660 case '\'':
661 ps("\\'");
662 break;
663
664 case '.':
665 ps("\\&.");
666 break;
667
668 case '*':
669 ps("\\fI*\\fP");
670 break;
671
672 case '/':
673 ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
674 break;
675
676 default:
677 if (c < 040)
678 putchar('^'), c |= '@';
679 case '\t':
680 case '\n':
681 putchar(c);
682 }
683 }
684
685 /*
686 * look for a process beginning on this line
687 */
688 static bool
isproc(char * s)689 isproc(char *s)
690 {
691 pname[0] = '\0';
692 if (!l_toplex || blklevel == 0)
693 if (expmatch(s, l_prcbeg, pname) != NULL) {
694 return (true);
695 }
696 return (false);
697 }
698
699
700 /* iskw - check to see if the next word is a keyword
701 */
702
703 static int
iskw(register char * s)704 iskw(register char *s)
705 {
706 register char **ss = l_keywds;
707 register int i = 1;
708 register char *cp = s;
709
710 while (++cp, isidchr(*cp))
711 i++;
712 while ((cp = *ss++))
713 if (!STRNCMP(s,cp,i) && !isidchr(cp[i]))
714 return (i);
715 return (0);
716 }
717