1 /* $NetBSD: vfontedpr.c,v 1.19 2022/01/24 09:14:37 andvar Exp $ */
2
3 /*
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #if HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35
36 #include <sys/cdefs.h>
37 #ifndef lint
38 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\
39 The Regents of the University of California. All rights reserved.");
40 #endif /* not lint */
41
42 #ifndef lint
43 #if 0
44 static char sccsid[] = "@(#)vfontedpr.c 8.1 (Berkeley) 6/6/93";
45 #endif
46 __RCSID("$NetBSD: vfontedpr.c,v 1.19 2022/01/24 09:14:37 andvar Exp $");
47 #endif /* not lint */
48
49 #include <sys/types.h>
50 #include <sys/stat.h>
51 #include <time.h>
52 #include <ctype.h>
53 #include <stdlib.h>
54 #include <stdbool.h>
55 #include <string.h>
56 #include <stdio.h>
57 #include "pathnames.h"
58 #include "extern.h"
59
60 #define STANDARD 0
61 #define ALTERNATE 1
62
63 /*
64 * Vfontedpr.
65 *
66 * Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy)
67 *
68 */
69
70 #define STRLEN 10 /* length of strings introducing things */
71 #define PNAMELEN 40 /* length of a function/procedure name */
72 #define PSMAX 20 /* size of procedure name stacking */
73
74 static int iskw(char *);
75 static bool isproc(char *);
76 static void putKcp(char *, char *, bool);
77 static void putScp(char *);
78 static void putcp(int);
79 static int tabs(char *, char *);
80 static int width(char *, char *);
81
82 /*
83 * The state variables
84 */
85
86 static bool filter = false; /* act as a filter (like eqn) */
87 static bool inchr; /* in a string constant */
88 static bool incomm; /* in a comment of the primary type */
89 static bool idx = false; /* form an index */
90 static bool instr; /* in a string constant */
91 static bool nokeyw = false; /* no keywords being flagged */
92 static bool pass = false; /*
93 * when acting as a filter, pass indicates
94 * whether we are currently processing
95 * input.
96 */
97
98 static int blklevel; /* current nesting level */
99 static int comtype; /* type of comment */
100 static const char *defsfile[2] = { _PATH_VGRINDEFS, 0 };
101 /* name of language definitions file */
102 static int margin;
103 static int plstack[PSMAX]; /* the procedure nesting level stack */
104 static char pname[BUFSIZ+1];
105 static bool prccont; /* continue last procedure */
106 static int psptr; /* the stack index of the current procedure */
107 static char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */
108
109 /*
110 * The language specific globals
111 */
112
113 char *l_acmbeg; /* string introducing a comment */
114 char *l_acmend; /* string ending a comment */
115 char *l_blkbeg; /* string beginning of a block */
116 char *l_blkend; /* string ending a block */
117 char *l_chrbeg; /* delimiter for character constant */
118 char *l_chrend; /* delimiter for character constant */
119 char *l_combeg; /* string introducing a comment */
120 char *l_comend; /* string ending a comment */
121 char l_escape; /* character used to escape characters */
122 char *l_keywds[BUFSIZ/2]; /* keyword table address */
123 char *l_prcbeg; /* regular expr for procedure begin */
124 char *l_strbeg; /* delimiter for string constant */
125 char *l_strend; /* delimiter for string constant */
126 bool l_toplex; /* procedures only defined at top lex level */
127 const char *language = "c"; /* the language indicator */
128
129 #define ps(x) printf("%s", x)
130 static char minus[] = "-";
131 static char minusn[] = "-n";
132
133 int
main(int argc,char * argv[])134 main(int argc, char *argv[])
135 {
136 const char *fname = "";
137 struct stat stbuf;
138 char buf[BUFSIZ];
139 char *defs;
140 int needbp = 0;
141
142 argc--, argv++;
143 do {
144 char *cp;
145 int i;
146
147 if (argc > 0) {
148 if (!strcmp(argv[0], "-h")) {
149 if (argc == 1) {
150 printf("'ds =H\n");
151 argc = 0;
152 goto rest;
153 }
154 printf("'ds =H %s\n", argv[1]);
155 argc--, argv++;
156 argc--, argv++;
157 if (argc > 0)
158 continue;
159 goto rest;
160 }
161
162 /* act as a filter like eqn */
163 if (!strcmp(argv[0], "-f")) {
164 filter=true;
165 argv[0] = argv[argc-1];
166 argv[argc-1] = minus;
167 continue;
168 }
169
170 /* take input from the standard place */
171 if (!strcmp(argv[0], "-")) {
172 argc = 0;
173 goto rest;
174 }
175
176 /* build an index */
177 if (!strcmp(argv[0], "-x")) {
178 idx=true;
179 argv[0] = minusn;
180 }
181
182 /* indicate no keywords */
183 if (!strcmp(argv[0], "-n")) {
184 nokeyw=true;
185 argc--, argv++;
186 continue;
187 }
188
189 /* specify the font size */
190 if (!strncmp(argv[0], "-s", 2)) {
191 i = 0;
192 cp = argv[0] + 2;
193 while (*cp)
194 i = i * 10 + (*cp++ - '0');
195 printf("'ps %d\n'vs %d\n", i, i+1);
196 argc--, argv++;
197 continue;
198 }
199
200 /* specify the language */
201 if (!strncmp(argv[0], "-l", 2)) {
202 language = argv[0]+2;
203 argc--, argv++;
204 continue;
205 }
206
207 /* specify the language description file */
208 if (!strncmp(argv[0], "-d", 2)) {
209 defsfile[0] = argv[1];
210 argc--, argv++;
211 argc--, argv++;
212 continue;
213 }
214
215 /* open the file for input */
216 if (freopen(argv[0], "r", stdin) == NULL) {
217 perror(argv[0]);
218 exit(1);
219 }
220 if (idx)
221 printf("'ta 4i 4.25i 5.5iR\n'in .5i\n");
222 fname = argv[0];
223 argc--, argv++;
224 }
225 rest:
226
227 /*
228 * get the language definition from the defs file
229 */
230 i = cgetent(&defs, defsfile, language);
231 if (i == -1) {
232 fprintf (stderr, "no entry for language %s\n", language);
233 exit(0);
234 } else if (i == -2) { fprintf(stderr,
235 "cannot find vgrindefs file %s\n", defsfile[0]);
236 exit(0);
237 } else if (i == -3) { fprintf(stderr,
238 "potential reference loop detected in vgrindefs file %s\n",
239 defsfile[0]);
240 exit(0);
241 }
242 if (cgetustr(defs, "kw", &cp) == -1)
243 nokeyw = true;
244 else {
245 char **cpp;
246
247 cpp = l_keywds;
248 while (*cp) {
249 while (*cp == ' ' || *cp =='\t')
250 *cp++ = '\0';
251 if (*cp)
252 *cpp++ = cp;
253 while (*cp != ' ' && *cp != '\t' && *cp)
254 cp++;
255 }
256 *cpp = NULL;
257 }
258 cgetustr(defs, "pb", &cp);
259 l_prcbeg = convexp(cp);
260 cgetustr(defs, "cb", &cp);
261 l_combeg = convexp(cp);
262 cgetustr(defs, "ce", &cp);
263 l_comend = convexp(cp);
264 cgetustr(defs, "ab", &cp);
265 l_acmbeg = convexp(cp);
266 cgetustr(defs, "ae", &cp);
267 l_acmend = convexp(cp);
268 cgetustr(defs, "sb", &cp);
269 l_strbeg = convexp(cp);
270 cgetustr(defs, "se", &cp);
271 l_strend = convexp(cp);
272 cgetustr(defs, "bb", &cp);
273 l_blkbeg = convexp(cp);
274 cgetustr(defs, "be", &cp);
275 l_blkend = convexp(cp);
276 cgetustr(defs, "lb", &cp);
277 l_chrbeg = convexp(cp);
278 cgetustr(defs, "le", &cp);
279 l_chrend = convexp(cp);
280 l_escape = '\\';
281 l_onecase = (cgetcap(defs, "oc", ':') != NULL);
282 l_toplex = (cgetcap(defs, "tl", ':') != NULL);
283
284 /* initialize the program */
285
286 incomm = false;
287 instr = false;
288 inchr = false;
289 x_escaped = false;
290 blklevel = 0;
291 for (psptr=0; psptr<PSMAX; psptr++) {
292 pstack[psptr][0] = '\0';
293 plstack[psptr] = 0;
294 }
295 psptr = -1;
296 ps("'-F\n");
297 if (!filter) {
298 printf(".ds =F %s\n", fname);
299 ps("'wh 0 vH\n");
300 ps("'wh -1i vF\n");
301 }
302 if (needbp) {
303 needbp = 0;
304 printf(".()\n");
305 printf(".bp\n");
306 }
307 if (!filter) {
308 fstat(fileno(stdin), &stbuf);
309 cp = ctime(&stbuf.st_mtime);
310 cp[16] = '\0';
311 cp[24] = '\0';
312 printf(".ds =M %s %s\n", cp+4, cp+20);
313 }
314
315 /*
316 * MAIN LOOP!!!
317 */
318 while (fgets(buf, sizeof buf, stdin) != NULL) {
319 if (buf[0] == '\f') {
320 printf(".bp\n");
321 }
322 if (buf[0] == '.') {
323 printf("%s", buf);
324 if (!strncmp (buf+1, "vS", 2))
325 pass = true;
326 if (!strncmp (buf+1, "vE", 2))
327 pass = false;
328 continue;
329 }
330 prccont = false;
331 if (!filter || pass)
332 putScp(buf);
333 else
334 printf("%s", buf);
335 if (prccont && (psptr >= 0)) {
336 ps("'FC ");
337 ps(pstack[psptr]);
338 ps("\n");
339 }
340 #ifdef DEBUG
341 printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr);
342 #endif
343 margin = 0;
344 }
345 needbp = 1;
346 } while (argc > 0);
347 exit(0);
348 }
349
350 #define isidchr(c) (isalnum((unsigned char)(c)) || (c) == '_')
351
352 static void
putScp(char * os)353 putScp(char *os)
354 {
355 char *s = os; /* pointer to unmatched string */
356 char dummy[BUFSIZ]; /* dummy to be used by expmatch */
357 char *comptr; /* end of a comment delimiter */
358 char *acmptr; /* end of a comment delimiter */
359 char *strptr; /* end of a string delimiter */
360 char *chrptr; /* end of a character const delimiter */
361 char *blksptr; /* end of a lexical block start */
362 char *blkeptr; /* end of a lexical block end */
363
364 x_start = os; /* remember the start for expmatch */
365 x_escaped = false;
366 if (nokeyw || incomm || instr)
367 goto skip;
368 if (isproc(s)) {
369 ps("'FN ");
370 ps(pname);
371 ps("\n");
372 if (psptr < PSMAX) {
373 ++psptr;
374 strlcpy(pstack[psptr], pname, sizeof(pstack[psptr]));
375 plstack[psptr] = blklevel;
376 }
377 }
378 skip:
379 do {
380 /* check for string, comment, blockstart, etc */
381 if (!incomm && !instr && !inchr) {
382
383 blkeptr = expmatch(s, l_blkend, dummy);
384 blksptr = expmatch(s, l_blkbeg, dummy);
385 comptr = expmatch(s, l_combeg, dummy);
386 acmptr = expmatch(s, l_acmbeg, dummy);
387 strptr = expmatch(s, l_strbeg, dummy);
388 chrptr = expmatch(s, l_chrbeg, dummy);
389
390 /* start of a comment? */
391 if (comptr != NULL)
392 if ((comptr < strptr || strptr == NULL)
393 && (comptr < acmptr || acmptr == NULL)
394 && (comptr < chrptr || chrptr == NULL)
395 && (comptr < blksptr || blksptr == NULL)
396 && (comptr < blkeptr || blkeptr == NULL)) {
397 putKcp(s, comptr-1, false);
398 s = comptr;
399 incomm = true;
400 comtype = STANDARD;
401 if (s != os)
402 ps("\\c");
403 ps("\\c\n'+C\n");
404 continue;
405 }
406
407 /* start of a comment? */
408 if (acmptr != NULL)
409 if ((acmptr < strptr || strptr == NULL)
410 && (acmptr < chrptr || chrptr == NULL)
411 && (acmptr < blksptr || blksptr == NULL)
412 && (acmptr < blkeptr || blkeptr == NULL)) {
413 putKcp(s, acmptr-1, false);
414 s = acmptr;
415 incomm = true;
416 comtype = ALTERNATE;
417 if (s != os)
418 ps("\\c");
419 ps("\\c\n'+C\n");
420 continue;
421 }
422
423 /* start of a string? */
424 if (strptr != NULL)
425 if ((strptr < chrptr || chrptr == NULL)
426 && (strptr < blksptr || blksptr == NULL)
427 && (strptr < blkeptr || blkeptr == NULL)) {
428 putKcp(s, strptr-1, false);
429 s = strptr;
430 instr = true;
431 continue;
432 }
433
434 /* start of a character string? */
435 if (chrptr != NULL)
436 if ((chrptr < blksptr || blksptr == NULL)
437 && (chrptr < blkeptr || blkeptr == NULL)) {
438 putKcp(s, chrptr-1, false);
439 s = chrptr;
440 inchr = true;
441 continue;
442 }
443
444 /* end of a lexical block */
445 if (blkeptr != NULL) {
446 if (blkeptr < blksptr || blksptr == NULL) {
447 putKcp(s, blkeptr - 1, false);
448 s = blkeptr;
449 blklevel--;
450 if (psptr >= 0 && plstack[psptr] >= blklevel) {
451
452 /* end of current procedure */
453 if (s != os)
454 ps("\\c");
455 ps("\\c\n'-F\n");
456 blklevel = plstack[psptr];
457
458 /* see if we should print the last proc name */
459 if (--psptr >= 0)
460 prccont = true;
461 else
462 psptr = -1;
463 }
464 continue;
465 }
466 }
467
468 /* start of a lexical block */
469 if (blksptr != NULL) {
470 putKcp(s, blksptr - 1, false);
471 s = blksptr;
472 blklevel++;
473 continue;
474 }
475
476 /* check for end of comment */
477 } else if (incomm) {
478 comptr = expmatch(s, l_comend, dummy);
479 acmptr = expmatch(s, l_acmend, dummy);
480 if (((comtype == STANDARD) && (comptr != NULL)) ||
481 ((comtype == ALTERNATE) && (acmptr != NULL))) {
482 if (comtype == STANDARD) {
483 putKcp(s, comptr-1, true);
484 s = comptr;
485 } else {
486 putKcp(s, acmptr-1, true);
487 s = acmptr;
488 }
489 incomm = false;
490 ps("\\c\n'-C\n");
491 continue;
492 } else {
493 putKcp(s, s + strlen(s) -1, true);
494 s = s + strlen(s);
495 continue;
496 }
497
498 /* check for end of string */
499 } else if (instr) {
500 if ((strptr = expmatch(s, l_strend, dummy)) != NULL) {
501 putKcp(s, strptr-1, true);
502 s = strptr;
503 instr = false;
504 continue;
505 } else {
506 putKcp(s, s+strlen(s)-1, true);
507 s = s + strlen(s);
508 continue;
509 }
510
511 /* check for end of character string */
512 } else if (inchr) {
513 if ((chrptr = expmatch(s, l_chrend, dummy)) != NULL) {
514 putKcp(s, chrptr-1, true);
515 s = chrptr;
516 inchr = false;
517 continue;
518 } else {
519 putKcp(s, s+strlen(s)-1, true);
520 s = s + strlen(s);
521 continue;
522 }
523 }
524
525 /* print out the line */
526 putKcp(s, s + strlen(s) -1, false);
527 s = s + strlen(s);
528 } while (*s);
529 }
530
531 static void
putKcp(char * start,char * end,bool force)532 putKcp(
533 char *start, /* start of string to write */
534 char *end, /* end of string to write */
535 bool force) /* true if we should force nokeyw */
536 {
537 int i;
538 int xfld = 0;
539
540 while (start <= end) {
541 if (idx) {
542 if (*start == ' ' || *start == '\t') {
543 if (xfld == 0)
544 printf("");
545 printf("\t");
546 xfld = 1;
547 while (*start == ' ' || *start == '\t')
548 start++;
549 continue;
550 }
551 }
552
553 /* take care of nice tab stops */
554 if (*start == '\t') {
555 while (*start == '\t')
556 start++;
557 i = tabs(x_start, start) - margin / 8;
558 printf("\\h'|%dn'", i * 10 + 1 - margin % 8);
559 continue;
560 }
561
562 if (!nokeyw && !force)
563 if ((*start == '#' || isidchr(*start))
564 && (start == x_start || !isidchr(start[-1]))) {
565 i = iskw(start);
566 if (i > 0) {
567 ps("\\*(+K");
568 do
569 putcp(*start++);
570 while (--i > 0);
571 ps("\\*(-K");
572 continue;
573 }
574 }
575
576 putcp(*start++);
577 }
578 }
579
580
581 static int
tabs(char * s,char * os)582 tabs(char *s, char *os)
583 {
584
585 return width(s, os) / 8;
586 }
587
588 static int
width(char * s,char * os)589 width(char *s, char *os)
590 {
591 int i = 0;
592
593 while (s < os) {
594 if (*s == '\t') {
595 i = (i + 8) &~ 7;
596 s++;
597 continue;
598 }
599 if (*s < ' ')
600 i += 2;
601 else
602 i++;
603 s++;
604 }
605 return i;
606 }
607
608 static void
putcp(int c)609 putcp(int c)
610 {
611
612 switch(c) {
613
614 case 0:
615 break;
616
617 case '\f':
618 break;
619
620 case '{':
621 ps("\\*(+K{\\*(-K");
622 break;
623
624 case '}':
625 ps("\\*(+K}\\*(-K");
626 break;
627
628 case '\\':
629 ps("\\e");
630 break;
631
632 case '_':
633 ps("\\*_");
634 break;
635
636 case '-':
637 ps("\\*-");
638 break;
639
640 case '`':
641 ps("\\`");
642 break;
643
644 case '\'':
645 ps("\\'");
646 break;
647
648 case '.':
649 ps("\\&.");
650 break;
651
652 case '*':
653 ps("\\fI*\\fP");
654 break;
655
656 case '/':
657 ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP");
658 break;
659
660 default:
661 if (c < 040)
662 putchar('^'), c |= '@';
663 /* FALLTHROUGH */
664 case '\t':
665 case '\n':
666 putchar(c);
667 }
668 }
669
670 /*
671 * look for a process beginning on this line
672 */
673 static bool
isproc(char * s)674 isproc(char *s)
675 {
676 pname[0] = '\0';
677 if (!l_toplex || blklevel == 0)
678 if (expmatch(s, l_prcbeg, pname) != NULL) {
679 return true;
680 }
681 return false;
682 }
683
684
685 /* iskw - check to see if the next word is a keyword
686 */
687
688 static int
iskw(char * s)689 iskw(char *s)
690 {
691 char **ss = l_keywds;
692 int i = 1;
693 char *cp = s;
694
695 while (++cp, isidchr((unsigned char)*cp))
696 i++;
697 while ((cp = *ss++) != NULL)
698 if (!STRNCMP(s,cp,i) && !isidchr((unsigned char)cp[i]))
699 return i;
700 return 0;
701 }
702