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[mandoc.git] / mdoc_man.c
1 /* $Id: mdoc_man.c,v 1.132 2019/01/04 03:17:36 schwarze Exp $ */
2 /*
3 * Copyright (c) 2011-2019 Ingo Schwarze <schwarze@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17 #include "config.h"
18
19 #include <sys/types.h>
20
21 #include <assert.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25
26 #include "mandoc_aux.h"
27 #include "mandoc.h"
28 #include "roff.h"
29 #include "mdoc.h"
30 #include "man.h"
31 #include "out.h"
32 #include "main.h"
33
34 #define DECL_ARGS const struct roff_meta *meta, struct roff_node *n
35
36 typedef int (*int_fp)(DECL_ARGS);
37 typedef void (*void_fp)(DECL_ARGS);
38
39 struct mdoc_man_act {
40 int_fp cond; /* DON'T run actions */
41 int_fp pre; /* pre-node action */
42 void_fp post; /* post-node action */
43 const char *prefix; /* pre-node string constant */
44 const char *suffix; /* post-node string constant */
45 };
46
47 static int cond_body(DECL_ARGS);
48 static int cond_head(DECL_ARGS);
49 static void font_push(char);
50 static void font_pop(void);
51 static int man_strlen(const char *);
52 static void mid_it(void);
53 static void post__t(DECL_ARGS);
54 static void post_aq(DECL_ARGS);
55 static void post_bd(DECL_ARGS);
56 static void post_bf(DECL_ARGS);
57 static void post_bk(DECL_ARGS);
58 static void post_bl(DECL_ARGS);
59 static void post_dl(DECL_ARGS);
60 static void post_en(DECL_ARGS);
61 static void post_enc(DECL_ARGS);
62 static void post_eo(DECL_ARGS);
63 static void post_fa(DECL_ARGS);
64 static void post_fd(DECL_ARGS);
65 static void post_fl(DECL_ARGS);
66 static void post_fn(DECL_ARGS);
67 static void post_fo(DECL_ARGS);
68 static void post_font(DECL_ARGS);
69 static void post_in(DECL_ARGS);
70 static void post_it(DECL_ARGS);
71 static void post_lb(DECL_ARGS);
72 static void post_nm(DECL_ARGS);
73 static void post_percent(DECL_ARGS);
74 static void post_pf(DECL_ARGS);
75 static void post_sect(DECL_ARGS);
76 static void post_vt(DECL_ARGS);
77 static int pre__t(DECL_ARGS);
78 static int pre_abort(DECL_ARGS);
79 static int pre_an(DECL_ARGS);
80 static int pre_ap(DECL_ARGS);
81 static int pre_aq(DECL_ARGS);
82 static int pre_bd(DECL_ARGS);
83 static int pre_bf(DECL_ARGS);
84 static int pre_bk(DECL_ARGS);
85 static int pre_bl(DECL_ARGS);
86 static void pre_br(DECL_ARGS);
87 static int pre_dl(DECL_ARGS);
88 static int pre_en(DECL_ARGS);
89 static int pre_enc(DECL_ARGS);
90 static int pre_em(DECL_ARGS);
91 static int pre_skip(DECL_ARGS);
92 static int pre_eo(DECL_ARGS);
93 static int pre_ex(DECL_ARGS);
94 static int pre_fa(DECL_ARGS);
95 static int pre_fd(DECL_ARGS);
96 static int pre_fl(DECL_ARGS);
97 static int pre_fn(DECL_ARGS);
98 static int pre_fo(DECL_ARGS);
99 static void pre_ft(DECL_ARGS);
100 static int pre_Ft(DECL_ARGS);
101 static int pre_in(DECL_ARGS);
102 static int pre_it(DECL_ARGS);
103 static int pre_lk(DECL_ARGS);
104 static int pre_li(DECL_ARGS);
105 static int pre_nm(DECL_ARGS);
106 static int pre_no(DECL_ARGS);
107 static void pre_noarg(DECL_ARGS);
108 static int pre_ns(DECL_ARGS);
109 static void pre_onearg(DECL_ARGS);
110 static int pre_pp(DECL_ARGS);
111 static int pre_rs(DECL_ARGS);
112 static int pre_sm(DECL_ARGS);
113 static void pre_sp(DECL_ARGS);
114 static int pre_sect(DECL_ARGS);
115 static int pre_sy(DECL_ARGS);
116 static void pre_syn(const struct roff_node *);
117 static void pre_ta(DECL_ARGS);
118 static int pre_vt(DECL_ARGS);
119 static int pre_xr(DECL_ARGS);
120 static void print_word(const char *);
121 static void print_line(const char *, int);
122 static void print_block(const char *, int);
123 static void print_offs(const char *, int);
124 static void print_width(const struct mdoc_bl *,
125 const struct roff_node *);
126 static void print_count(int *);
127 static void print_node(DECL_ARGS);
128
129 static const void_fp roff_man_acts[ROFF_MAX] = {
130 pre_br, /* br */
131 pre_onearg, /* ce */
132 pre_noarg, /* fi */
133 pre_ft, /* ft */
134 pre_onearg, /* ll */
135 pre_onearg, /* mc */
136 pre_noarg, /* nf */
137 pre_onearg, /* po */
138 pre_onearg, /* rj */
139 pre_sp, /* sp */
140 pre_ta, /* ta */
141 pre_onearg, /* ti */
142 };
143
144 static const struct mdoc_man_act mdoc_man_acts[MDOC_MAX - MDOC_Dd] = {
145 { NULL, NULL, NULL, NULL, NULL }, /* Dd */
146 { NULL, NULL, NULL, NULL, NULL }, /* Dt */
147 { NULL, NULL, NULL, NULL, NULL }, /* Os */
148 { NULL, pre_sect, post_sect, ".SH", NULL }, /* Sh */
149 { NULL, pre_sect, post_sect, ".SS", NULL }, /* Ss */
150 { NULL, pre_pp, NULL, NULL, NULL }, /* Pp */
151 { cond_body, pre_dl, post_dl, NULL, NULL }, /* D1 */
152 { cond_body, pre_dl, post_dl, NULL, NULL }, /* Dl */
153 { cond_body, pre_bd, post_bd, NULL, NULL }, /* Bd */
154 { NULL, NULL, NULL, NULL, NULL }, /* Ed */
155 { cond_body, pre_bl, post_bl, NULL, NULL }, /* Bl */
156 { NULL, NULL, NULL, NULL, NULL }, /* El */
157 { NULL, pre_it, post_it, NULL, NULL }, /* It */
158 { NULL, pre_em, post_font, NULL, NULL }, /* Ad */
159 { NULL, pre_an, NULL, NULL, NULL }, /* An */
160 { NULL, pre_ap, NULL, NULL, NULL }, /* Ap */
161 { NULL, pre_em, post_font, NULL, NULL }, /* Ar */
162 { NULL, pre_sy, post_font, NULL, NULL }, /* Cd */
163 { NULL, pre_sy, post_font, NULL, NULL }, /* Cm */
164 { NULL, pre_li, post_font, NULL, NULL }, /* Dv */
165 { NULL, pre_li, post_font, NULL, NULL }, /* Er */
166 { NULL, pre_li, post_font, NULL, NULL }, /* Ev */
167 { NULL, pre_ex, NULL, NULL, NULL }, /* Ex */
168 { NULL, pre_fa, post_fa, NULL, NULL }, /* Fa */
169 { NULL, pre_fd, post_fd, NULL, NULL }, /* Fd */
170 { NULL, pre_fl, post_fl, NULL, NULL }, /* Fl */
171 { NULL, pre_fn, post_fn, NULL, NULL }, /* Fn */
172 { NULL, pre_Ft, post_font, NULL, NULL }, /* Ft */
173 { NULL, pre_sy, post_font, NULL, NULL }, /* Ic */
174 { NULL, pre_in, post_in, NULL, NULL }, /* In */
175 { NULL, pre_li, post_font, NULL, NULL }, /* Li */
176 { cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
177 { NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
178 { cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
179 { NULL, pre_abort, NULL, NULL, NULL }, /* Ot */
180 { NULL, pre_em, post_font, NULL, NULL }, /* Pa */
181 { NULL, pre_ex, NULL, NULL, NULL }, /* Rv */
182 { NULL, NULL, NULL, NULL, NULL }, /* St */
183 { NULL, pre_em, post_font, NULL, NULL }, /* Va */
184 { NULL, pre_vt, post_vt, NULL, NULL }, /* Vt */
185 { NULL, pre_xr, NULL, NULL, NULL }, /* Xr */
186 { NULL, NULL, post_percent, NULL, NULL }, /* %A */
187 { NULL, pre_em, post_percent, NULL, NULL }, /* %B */
188 { NULL, NULL, post_percent, NULL, NULL }, /* %D */
189 { NULL, pre_em, post_percent, NULL, NULL }, /* %I */
190 { NULL, pre_em, post_percent, NULL, NULL }, /* %J */
191 { NULL, NULL, post_percent, NULL, NULL }, /* %N */
192 { NULL, NULL, post_percent, NULL, NULL }, /* %O */
193 { NULL, NULL, post_percent, NULL, NULL }, /* %P */
194 { NULL, NULL, post_percent, NULL, NULL }, /* %R */
195 { NULL, pre__t, post__t, NULL, NULL }, /* %T */
196 { NULL, NULL, post_percent, NULL, NULL }, /* %V */
197 { NULL, NULL, NULL, NULL, NULL }, /* Ac */
198 { cond_body, pre_aq, post_aq, NULL, NULL }, /* Ao */
199 { cond_body, pre_aq, post_aq, NULL, NULL }, /* Aq */
200 { NULL, NULL, NULL, NULL, NULL }, /* At */
201 { NULL, NULL, NULL, NULL, NULL }, /* Bc */
202 { NULL, pre_bf, post_bf, NULL, NULL }, /* Bf */
203 { cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
204 { cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
205 { NULL, pre_bk, post_bk, NULL, NULL }, /* Bsx */
206 { NULL, pre_bk, post_bk, NULL, NULL }, /* Bx */
207 { NULL, pre_skip, NULL, NULL, NULL }, /* Db */
208 { NULL, NULL, NULL, NULL, NULL }, /* Dc */
209 { cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Do */
210 { cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Dq */
211 { NULL, NULL, NULL, NULL, NULL }, /* Ec */
212 { NULL, NULL, NULL, NULL, NULL }, /* Ef */
213 { NULL, pre_em, post_font, NULL, NULL }, /* Em */
214 { cond_body, pre_eo, post_eo, NULL, NULL }, /* Eo */
215 { NULL, pre_bk, post_bk, NULL, NULL }, /* Fx */
216 { NULL, pre_sy, post_font, NULL, NULL }, /* Ms */
217 { NULL, pre_no, NULL, NULL, NULL }, /* No */
218 { NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
219 { NULL, pre_bk, post_bk, NULL, NULL }, /* Nx */
220 { NULL, pre_bk, post_bk, NULL, NULL }, /* Ox */
221 { NULL, NULL, NULL, NULL, NULL }, /* Pc */
222 { NULL, NULL, post_pf, NULL, NULL }, /* Pf */
223 { cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
224 { cond_body, pre_enc, post_enc, "(", ")" }, /* Pq */
225 { NULL, NULL, NULL, NULL, NULL }, /* Qc */
226 { cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Ql */
227 { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qo */
228 { cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qq */
229 { NULL, NULL, NULL, NULL, NULL }, /* Re */
230 { cond_body, pre_rs, NULL, NULL, NULL }, /* Rs */
231 { NULL, NULL, NULL, NULL, NULL }, /* Sc */
232 { cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* So */
233 { cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Sq */
234 { NULL, pre_sm, NULL, NULL, NULL }, /* Sm */
235 { NULL, pre_em, post_font, NULL, NULL }, /* Sx */
236 { NULL, pre_sy, post_font, NULL, NULL }, /* Sy */
237 { NULL, pre_li, post_font, NULL, NULL }, /* Tn */
238 { NULL, NULL, NULL, NULL, NULL }, /* Ux */
239 { NULL, NULL, NULL, NULL, NULL }, /* Xc */
240 { NULL, NULL, NULL, NULL, NULL }, /* Xo */
241 { NULL, pre_fo, post_fo, NULL, NULL }, /* Fo */
242 { NULL, NULL, NULL, NULL, NULL }, /* Fc */
243 { cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
244 { NULL, NULL, NULL, NULL, NULL }, /* Oc */
245 { NULL, pre_bk, post_bk, NULL, NULL }, /* Bk */
246 { NULL, NULL, NULL, NULL, NULL }, /* Ek */
247 { NULL, NULL, NULL, NULL, NULL }, /* Bt */
248 { NULL, NULL, NULL, NULL, NULL }, /* Hf */
249 { NULL, pre_em, post_font, NULL, NULL }, /* Fr */
250 { NULL, NULL, NULL, NULL, NULL }, /* Ud */
251 { NULL, NULL, post_lb, NULL, NULL }, /* Lb */
252 { NULL, pre_abort, NULL, NULL, NULL }, /* Lp */
253 { NULL, pre_lk, NULL, NULL, NULL }, /* Lk */
254 { NULL, pre_em, post_font, NULL, NULL }, /* Mt */
255 { cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
256 { cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
257 { NULL, NULL, NULL, NULL, NULL }, /* Brc */
258 { NULL, NULL, post_percent, NULL, NULL }, /* %C */
259 { NULL, pre_skip, NULL, NULL, NULL }, /* Es */
260 { cond_body, pre_en, post_en, NULL, NULL }, /* En */
261 { NULL, pre_bk, post_bk, NULL, NULL }, /* Dx */
262 { NULL, NULL, post_percent, NULL, NULL }, /* %Q */
263 { NULL, NULL, post_percent, NULL, NULL }, /* %U */
264 { NULL, NULL, NULL, NULL, NULL }, /* Ta */
265 };
266 static const struct mdoc_man_act *mdoc_man_act(enum roff_tok);
267
268 static int outflags;
269 #define MMAN_spc (1 << 0) /* blank character before next word */
270 #define MMAN_spc_force (1 << 1) /* even before trailing punctuation */
271 #define MMAN_nl (1 << 2) /* break man(7) code line */
272 #define MMAN_br (1 << 3) /* break output line */
273 #define MMAN_sp (1 << 4) /* insert a blank output line */
274 #define MMAN_PP (1 << 5) /* reset indentation etc. */
275 #define MMAN_Sm (1 << 6) /* horizontal spacing mode */
276 #define MMAN_Bk (1 << 7) /* word keep mode */
277 #define MMAN_Bk_susp (1 << 8) /* suspend this (after a macro) */
278 #define MMAN_An_split (1 << 9) /* author mode is "split" */
279 #define MMAN_An_nosplit (1 << 10) /* author mode is "nosplit" */
280 #define MMAN_PD (1 << 11) /* inter-paragraph spacing disabled */
281 #define MMAN_nbrword (1 << 12) /* do not break the next word */
282
283 #define BL_STACK_MAX 32
284
285 static int Bl_stack[BL_STACK_MAX]; /* offsets [chars] */
286 static int Bl_stack_post[BL_STACK_MAX]; /* add final .RE */
287 static int Bl_stack_len; /* number of nested Bl blocks */
288 static int TPremain; /* characters before tag is full */
289
290 static struct {
291 char *head;
292 char *tail;
293 size_t size;
294 } fontqueue;
295
296
297 static const struct mdoc_man_act *
298 mdoc_man_act(enum roff_tok tok)
299 {
300 assert(tok >= MDOC_Dd && tok <= MDOC_MAX);
301 return mdoc_man_acts + (tok - MDOC_Dd);
302 }
303
304 static int
305 man_strlen(const char *cp)
306 {
307 size_t rsz;
308 int skip, sz;
309
310 sz = 0;
311 skip = 0;
312 for (;;) {
313 rsz = strcspn(cp, "\\");
314 if (rsz) {
315 cp += rsz;
316 if (skip) {
317 skip = 0;
318 rsz--;
319 }
320 sz += rsz;
321 }
322 if ('\0' == *cp)
323 break;
324 cp++;
325 switch (mandoc_escape(&cp, NULL, NULL)) {
326 case ESCAPE_ERROR:
327 return sz;
328 case ESCAPE_UNICODE:
329 case ESCAPE_NUMBERED:
330 case ESCAPE_SPECIAL:
331 case ESCAPE_UNDEF:
332 case ESCAPE_OVERSTRIKE:
333 if (skip)
334 skip = 0;
335 else
336 sz++;
337 break;
338 case ESCAPE_SKIPCHAR:
339 skip = 1;
340 break;
341 default:
342 break;
343 }
344 }
345 return sz;
346 }
347
348 static void
349 font_push(char newfont)
350 {
351
352 if (fontqueue.head + fontqueue.size <= ++fontqueue.tail) {
353 fontqueue.size += 8;
354 fontqueue.head = mandoc_realloc(fontqueue.head,
355 fontqueue.size);
356 }
357 *fontqueue.tail = newfont;
358 print_word("");
359 printf("\\f");
360 putchar(newfont);
361 outflags &= ~MMAN_spc;
362 }
363
364 static void
365 font_pop(void)
366 {
367
368 if (fontqueue.tail > fontqueue.head)
369 fontqueue.tail--;
370 outflags &= ~MMAN_spc;
371 print_word("");
372 printf("\\f");
373 putchar(*fontqueue.tail);
374 }
375
376 static void
377 print_word(const char *s)
378 {
379
380 if ((MMAN_PP | MMAN_sp | MMAN_br | MMAN_nl) & outflags) {
381 /*
382 * If we need a newline, print it now and start afresh.
383 */
384 if (MMAN_PP & outflags) {
385 if (MMAN_sp & outflags) {
386 if (MMAN_PD & outflags) {
387 printf("\n.PD");
388 outflags &= ~MMAN_PD;
389 }
390 } else if ( ! (MMAN_PD & outflags)) {
391 printf("\n.PD 0");
392 outflags |= MMAN_PD;
393 }
394 printf("\n.PP\n");
395 } else if (MMAN_sp & outflags)
396 printf("\n.sp\n");
397 else if (MMAN_br & outflags)
398 printf("\n.br\n");
399 else if (MMAN_nl & outflags)
400 putchar('\n');
401 outflags &= ~(MMAN_PP|MMAN_sp|MMAN_br|MMAN_nl|MMAN_spc);
402 if (1 == TPremain)
403 printf(".br\n");
404 TPremain = 0;
405 } else if (MMAN_spc & outflags) {
406 /*
407 * If we need a space, only print it if
408 * (1) it is forced by `No' or
409 * (2) what follows is not terminating punctuation or
410 * (3) what follows is longer than one character.
411 */
412 if (MMAN_spc_force & outflags || '\0' == s[0] ||
413 NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1]) {
414 if (MMAN_Bk & outflags &&
415 ! (MMAN_Bk_susp & outflags))
416 putchar('\\');
417 putchar(' ');
418 if (TPremain)
419 TPremain--;
420 }
421 }
422
423 /*
424 * Reassign needing space if we're not following opening
425 * punctuation.
426 */
427 if (MMAN_Sm & outflags && ('\0' == s[0] ||
428 (('(' != s[0] && '[' != s[0]) || '\0' != s[1])))
429 outflags |= MMAN_spc;
430 else
431 outflags &= ~MMAN_spc;
432 outflags &= ~(MMAN_spc_force | MMAN_Bk_susp);
433
434 for ( ; *s; s++) {
435 switch (*s) {
436 case ASCII_NBRSP:
437 printf("\\ ");
438 break;
439 case ASCII_HYPH:
440 putchar('-');
441 break;
442 case ASCII_BREAK:
443 printf("\\:");
444 break;
445 case ' ':
446 if (MMAN_nbrword & outflags) {
447 printf("\\ ");
448 break;
449 }
450 /* FALLTHROUGH */
451 default:
452 putchar((unsigned char)*s);
453 break;
454 }
455 if (TPremain)
456 TPremain--;
457 }
458 outflags &= ~MMAN_nbrword;
459 }
460
461 static void
462 print_line(const char *s, int newflags)
463 {
464
465 outflags |= MMAN_nl;
466 print_word(s);
467 outflags |= newflags;
468 }
469
470 static void
471 print_block(const char *s, int newflags)
472 {
473
474 outflags &= ~MMAN_PP;
475 if (MMAN_sp & outflags) {
476 outflags &= ~(MMAN_sp | MMAN_br);
477 if (MMAN_PD & outflags) {
478 print_line(".PD", 0);
479 outflags &= ~MMAN_PD;
480 }
481 } else if (! (MMAN_PD & outflags))
482 print_line(".PD 0", MMAN_PD);
483 outflags |= MMAN_nl;
484 print_word(s);
485 outflags |= MMAN_Bk_susp | newflags;
486 }
487
488 static void
489 print_offs(const char *v, int keywords)
490 {
491 char buf[24];
492 struct roffsu su;
493 const char *end;
494 int sz;
495
496 print_line(".RS", MMAN_Bk_susp);
497
498 /* Convert v into a number (of characters). */
499 if (NULL == v || '\0' == *v || (keywords && !strcmp(v, "left")))
500 sz = 0;
501 else if (keywords && !strcmp(v, "indent"))
502 sz = 6;
503 else if (keywords && !strcmp(v, "indent-two"))
504 sz = 12;
505 else {
506 end = a2roffsu(v, &su, SCALE_EN);
507 if (end == NULL || *end != '\0')
508 sz = man_strlen(v);
509 else if (SCALE_EN == su.unit)
510 sz = su.scale;
511 else {
512 /*
513 * XXX
514 * If we are inside an enclosing list,
515 * there is no easy way to add the two
516 * indentations because they are provided
517 * in terms of different units.
518 */
519 print_word(v);
520 outflags |= MMAN_nl;
521 return;
522 }
523 }
524
525 /*
526 * We are inside an enclosing list.
527 * Add the two indentations.
528 */
529 if (Bl_stack_len)
530 sz += Bl_stack[Bl_stack_len - 1];
531
532 (void)snprintf(buf, sizeof(buf), "%dn", sz);
533 print_word(buf);
534 outflags |= MMAN_nl;
535 }
536
537 /*
538 * Set up the indentation for a list item; used from pre_it().
539 */
540 static void
541 print_width(const struct mdoc_bl *bl, const struct roff_node *child)
542 {
543 char buf[24];
544 struct roffsu su;
545 const char *end;
546 int numeric, remain, sz, chsz;
547
548 numeric = 1;
549 remain = 0;
550
551 /* Convert the width into a number (of characters). */
552 if (bl->width == NULL)
553 sz = (bl->type == LIST_hang) ? 6 : 0;
554 else {
555 end = a2roffsu(bl->width, &su, SCALE_MAX);
556 if (end == NULL || *end != '\0')
557 sz = man_strlen(bl->width);
558 else if (SCALE_EN == su.unit)
559 sz = su.scale;
560 else {
561 sz = 0;
562 numeric = 0;
563 }
564 }
565
566 /* XXX Rough estimation, might have multiple parts. */
567 if (bl->type == LIST_enum)
568 chsz = (bl->count > 8) + 1;
569 else if (child != NULL && child->type == ROFFT_TEXT)
570 chsz = man_strlen(child->string);
571 else
572 chsz = 0;
573
574 /* Maybe we are inside an enclosing list? */
575 mid_it();
576
577 /*
578 * Save our own indentation,
579 * such that child lists can use it.
580 */
581 Bl_stack[Bl_stack_len++] = sz + 2;
582
583 /* Set up the current list. */
584 if (chsz > sz && bl->type != LIST_tag)
585 print_block(".HP", 0);
586 else {
587 print_block(".TP", 0);
588 remain = sz + 2;
589 }
590 if (numeric) {
591 (void)snprintf(buf, sizeof(buf), "%dn", sz + 2);
592 print_word(buf);
593 } else
594 print_word(bl->width);
595 TPremain = remain;
596 }
597
598 static void
599 print_count(int *count)
600 {
601 char buf[24];
602
603 (void)snprintf(buf, sizeof(buf), "%d.\\&", ++*count);
604 print_word(buf);
605 }
606
607 void
608 man_mdoc(void *arg, const struct roff_meta *mdoc)
609 {
610 struct roff_node *n;
611
612 printf(".\\\" Automatically generated from an mdoc input file."
613 " Do not edit.\n");
614 for (n = mdoc->first->child; n != NULL; n = n->next) {
615 if (n->type != ROFFT_COMMENT)
616 break;
617 printf(".\\\"%s\n", n->string);
618 }
619
620 printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"\n",
621 mdoc->title, (mdoc->msec == NULL ? "" : mdoc->msec),
622 mdoc->date, mdoc->os, mdoc->vol);
623
624 /* Disable hyphenation and if nroff, disable justification. */
625 printf(".nh\n.if n .ad l");
626
627 outflags = MMAN_nl | MMAN_Sm;
628 if (0 == fontqueue.size) {
629 fontqueue.size = 8;
630 fontqueue.head = fontqueue.tail = mandoc_malloc(8);
631 *fontqueue.tail = 'R';
632 }
633 for (; n != NULL; n = n->next)
634 print_node(mdoc, n);
635 putchar('\n');
636 }
637
638 static void
639 print_node(DECL_ARGS)
640 {
641 const struct mdoc_man_act *act;
642 struct roff_node *sub;
643 int cond, do_sub;
644
645 if (n->flags & NODE_NOPRT)
646 return;
647
648 /*
649 * Break the line if we were parsed subsequent the current node.
650 * This makes the page structure be more consistent.
651 */
652 if (MMAN_spc & outflags && NODE_LINE & n->flags)
653 outflags |= MMAN_nl;
654
655 act = NULL;
656 cond = 0;
657 do_sub = 1;
658 n->flags &= ~NODE_ENDED;
659
660 if (n->type == ROFFT_TEXT) {
661 /*
662 * Make sure that we don't happen to start with a
663 * control character at the start of a line.
664 */
665 if (MMAN_nl & outflags &&
666 ('.' == *n->string || '\'' == *n->string)) {
667 print_word("");
668 printf("\\&");
669 outflags &= ~MMAN_spc;
670 }
671 if (n->flags & NODE_DELIMC)
672 outflags &= ~(MMAN_spc | MMAN_spc_force);
673 else if (outflags & MMAN_Sm)
674 outflags |= MMAN_spc_force;
675 print_word(n->string);
676 if (n->flags & NODE_DELIMO)
677 outflags &= ~(MMAN_spc | MMAN_spc_force);
678 else if (outflags & MMAN_Sm)
679 outflags |= MMAN_spc;
680 } else if (n->tok < ROFF_MAX) {
681 (*roff_man_acts[n->tok])(meta, n);
682 return;
683 } else {
684 /*
685 * Conditionally run the pre-node action handler for a
686 * node.
687 */
688 act = mdoc_man_act(n->tok);
689 cond = act->cond == NULL || (*act->cond)(meta, n);
690 if (cond && act->pre != NULL &&
691 (n->end == ENDBODY_NOT || n->child != NULL))
692 do_sub = (*act->pre)(meta, n);
693 }
694
695 /*
696 * Conditionally run all child nodes.
697 * Note that this iterates over children instead of using
698 * recursion. This prevents unnecessary depth in the stack.
699 */
700 if (do_sub)
701 for (sub = n->child; sub; sub = sub->next)
702 print_node(meta, sub);
703
704 /*
705 * Lastly, conditionally run the post-node handler.
706 */
707 if (NODE_ENDED & n->flags)
708 return;
709
710 if (cond && act->post)
711 (*act->post)(meta, n);
712
713 if (ENDBODY_NOT != n->end)
714 n->body->flags |= NODE_ENDED;
715 }
716
717 static int
718 cond_head(DECL_ARGS)
719 {
720
721 return n->type == ROFFT_HEAD;
722 }
723
724 static int
725 cond_body(DECL_ARGS)
726 {
727
728 return n->type == ROFFT_BODY;
729 }
730
731 static int
732 pre_abort(DECL_ARGS)
733 {
734 abort();
735 }
736
737 static int
738 pre_enc(DECL_ARGS)
739 {
740 const char *prefix;
741
742 prefix = mdoc_man_act(n->tok)->prefix;
743 if (NULL == prefix)
744 return 1;
745 print_word(prefix);
746 outflags &= ~MMAN_spc;
747 return 1;
748 }
749
750 static void
751 post_enc(DECL_ARGS)
752 {
753 const char *suffix;
754
755 suffix = mdoc_man_act(n->tok)->suffix;
756 if (NULL == suffix)
757 return;
758 outflags &= ~(MMAN_spc | MMAN_nl);
759 print_word(suffix);
760 }
761
762 static int
763 pre_ex(DECL_ARGS)
764 {
765 outflags |= MMAN_br | MMAN_nl;
766 return 1;
767 }
768
769 static void
770 post_font(DECL_ARGS)
771 {
772
773 font_pop();
774 }
775
776 static void
777 post_percent(DECL_ARGS)
778 {
779
780 if (mdoc_man_act(n->tok)->pre == pre_em)
781 font_pop();
782 if (n->next) {
783 print_word(",");
784 if (n->prev && n->prev->tok == n->tok &&
785 n->next->tok == n->tok)
786 print_word("and");
787 } else {
788 print_word(".");
789 outflags |= MMAN_nl;
790 }
791 }
792
793 static int
794 pre__t(DECL_ARGS)
795 {
796
797 if (n->parent->tok == MDOC_Rs && n->parent->norm->Rs.quote_T) {
798 print_word("\\(lq");
799 outflags &= ~MMAN_spc;
800 } else
801 font_push('I');
802 return 1;
803 }
804
805 static void
806 post__t(DECL_ARGS)
807 {
808
809 if (n->parent->tok == MDOC_Rs && n->parent->norm->Rs.quote_T) {
810 outflags &= ~MMAN_spc;
811 print_word("\\(rq");
812 } else
813 font_pop();
814 post_percent(meta, n);
815 }
816
817 /*
818 * Print before a section header.
819 */
820 static int
821 pre_sect(DECL_ARGS)
822 {
823
824 if (n->type == ROFFT_HEAD) {
825 outflags |= MMAN_sp;
826 print_block(mdoc_man_act(n->tok)->prefix, 0);
827 print_word("");
828 putchar('\"');
829 outflags &= ~MMAN_spc;
830 }
831 return 1;
832 }
833
834 /*
835 * Print subsequent a section header.
836 */
837 static void
838 post_sect(DECL_ARGS)
839 {
840
841 if (n->type != ROFFT_HEAD)
842 return;
843 outflags &= ~MMAN_spc;
844 print_word("");
845 putchar('\"');
846 outflags |= MMAN_nl;
847 if (MDOC_Sh == n->tok && SEC_AUTHORS == n->sec)
848 outflags &= ~(MMAN_An_split | MMAN_An_nosplit);
849 }
850
851 /* See mdoc_term.c, synopsis_pre() for comments. */
852 static void
853 pre_syn(const struct roff_node *n)
854 {
855
856 if (NULL == n->prev || ! (NODE_SYNPRETTY & n->flags))
857 return;
858
859 if (n->prev->tok == n->tok &&
860 MDOC_Ft != n->tok &&
861 MDOC_Fo != n->tok &&
862 MDOC_Fn != n->tok) {
863 outflags |= MMAN_br;
864 return;
865 }
866
867 switch (n->prev->tok) {
868 case MDOC_Fd:
869 case MDOC_Fn:
870 case MDOC_Fo:
871 case MDOC_In:
872 case MDOC_Vt:
873 outflags |= MMAN_sp;
874 break;
875 case MDOC_Ft:
876 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
877 outflags |= MMAN_sp;
878 break;
879 }
880 /* FALLTHROUGH */
881 default:
882 outflags |= MMAN_br;
883 break;
884 }
885 }
886
887 static int
888 pre_an(DECL_ARGS)
889 {
890
891 switch (n->norm->An.auth) {
892 case AUTH_split:
893 outflags &= ~MMAN_An_nosplit;
894 outflags |= MMAN_An_split;
895 return 0;
896 case AUTH_nosplit:
897 outflags &= ~MMAN_An_split;
898 outflags |= MMAN_An_nosplit;
899 return 0;
900 default:
901 if (MMAN_An_split & outflags)
902 outflags |= MMAN_br;
903 else if (SEC_AUTHORS == n->sec &&
904 ! (MMAN_An_nosplit & outflags))
905 outflags |= MMAN_An_split;
906 return 1;
907 }
908 }
909
910 static int
911 pre_ap(DECL_ARGS)
912 {
913
914 outflags &= ~MMAN_spc;
915 print_word("'");
916 outflags &= ~MMAN_spc;
917 return 0;
918 }
919
920 static int
921 pre_aq(DECL_ARGS)
922 {
923
924 print_word(n->child != NULL && n->child->next == NULL &&
925 n->child->tok == MDOC_Mt ? "<" : "\\(la");
926 outflags &= ~MMAN_spc;
927 return 1;
928 }
929
930 static void
931 post_aq(DECL_ARGS)
932 {
933
934 outflags &= ~(MMAN_spc | MMAN_nl);
935 print_word(n->child != NULL && n->child->next == NULL &&
936 n->child->tok == MDOC_Mt ? ">" : "\\(ra");
937 }
938
939 static int
940 pre_bd(DECL_ARGS)
941 {
942 outflags &= ~(MMAN_PP | MMAN_sp | MMAN_br);
943
944 if (DISP_unfilled == n->norm->Bd.type ||
945 DISP_literal == n->norm->Bd.type)
946 print_line(".nf", 0);
947 if (0 == n->norm->Bd.comp && NULL != n->parent->prev)
948 outflags |= MMAN_sp;
949 print_offs(n->norm->Bd.offs, 1);
950 return 1;
951 }
952
953 static void
954 post_bd(DECL_ARGS)
955 {
956 enum roff_tok bef, now;
957
958 /* Close out this display. */
959 print_line(".RE", MMAN_nl);
960 bef = n->flags & NODE_NOFILL ? ROFF_nf : ROFF_fi;
961 if (n->last == NULL)
962 now = n->norm->Bd.type == DISP_unfilled ||
963 n->norm->Bd.type == DISP_literal ? ROFF_nf : ROFF_fi;
964 else if (n->last->tok == ROFF_nf)
965 now = ROFF_nf;
966 else if (n->last->tok == ROFF_fi)
967 now = ROFF_fi;
968 else
969 now = n->last->flags & NODE_NOFILL ? ROFF_nf : ROFF_fi;
970 if (bef != now) {
971 outflags |= MMAN_nl;
972 print_word(".");
973 outflags &= ~MMAN_spc;
974 print_word(roff_name[bef]);
975 outflags |= MMAN_nl;
976 }
977
978 /* Maybe we are inside an enclosing list? */
979 if (NULL != n->parent->next)
980 mid_it();
981 }
982
983 static int
984 pre_bf(DECL_ARGS)
985 {
986
987 switch (n->type) {
988 case ROFFT_BLOCK:
989 return 1;
990 case ROFFT_BODY:
991 break;
992 default:
993 return 0;
994 }
995 switch (n->norm->Bf.font) {
996 case FONT_Em:
997 font_push('I');
998 break;
999 case FONT_Sy:
1000 font_push('B');
1001 break;
1002 default:
1003 font_push('R');
1004 break;
1005 }
1006 return 1;
1007 }
1008
1009 static void
1010 post_bf(DECL_ARGS)
1011 {
1012
1013 if (n->type == ROFFT_BODY)
1014 font_pop();
1015 }
1016
1017 static int
1018 pre_bk(DECL_ARGS)
1019 {
1020 switch (n->type) {
1021 case ROFFT_BLOCK:
1022 return 1;
1023 case ROFFT_BODY:
1024 case ROFFT_ELEM:
1025 outflags |= MMAN_Bk;
1026 return 1;
1027 default:
1028 return 0;
1029 }
1030 }
1031
1032 static void
1033 post_bk(DECL_ARGS)
1034 {
1035 switch (n->type) {
1036 case ROFFT_ELEM:
1037 while ((n = n->parent) != NULL)
1038 if (n->tok == MDOC_Bk)
1039 return;
1040 /* FALLTHROUGH */
1041 case ROFFT_BODY:
1042 outflags &= ~MMAN_Bk;
1043 break;
1044 default:
1045 break;
1046 }
1047 }
1048
1049 static int
1050 pre_bl(DECL_ARGS)
1051 {
1052 size_t icol;
1053
1054 /*
1055 * print_offs() will increase the -offset to account for
1056 * a possible enclosing .It, but any enclosed .It blocks
1057 * just nest and do not add up their indentation.
1058 */
1059 if (n->norm->Bl.offs) {
1060 print_offs(n->norm->Bl.offs, 0);
1061 Bl_stack[Bl_stack_len++] = 0;
1062 }
1063
1064 switch (n->norm->Bl.type) {
1065 case LIST_enum:
1066 n->norm->Bl.count = 0;
1067 return 1;
1068 case LIST_column:
1069 break;
1070 default:
1071 return 1;
1072 }
1073
1074 if (n->child != NULL) {
1075 print_line(".TS", MMAN_nl);
1076 for (icol = 0; icol < n->norm->Bl.ncols; icol++)
1077 print_word("l");
1078 print_word(".");
1079 }
1080 outflags |= MMAN_nl;
1081 return 1;
1082 }
1083
1084 static void
1085 post_bl(DECL_ARGS)
1086 {
1087
1088 switch (n->norm->Bl.type) {
1089 case LIST_column:
1090 if (n->child != NULL)
1091 print_line(".TE", 0);
1092 break;
1093 case LIST_enum:
1094 n->norm->Bl.count = 0;
1095 break;
1096 default:
1097 break;
1098 }
1099
1100 if (n->norm->Bl.offs) {
1101 print_line(".RE", MMAN_nl);
1102 assert(Bl_stack_len);
1103 Bl_stack_len--;
1104 assert(0 == Bl_stack[Bl_stack_len]);
1105 } else {
1106 outflags |= MMAN_PP | MMAN_nl;
1107 outflags &= ~(MMAN_sp | MMAN_br);
1108 }
1109
1110 /* Maybe we are inside an enclosing list? */
1111 if (NULL != n->parent->next)
1112 mid_it();
1113
1114 }
1115
1116 static void
1117 pre_br(DECL_ARGS)
1118 {
1119 outflags |= MMAN_br;
1120 }
1121
1122 static int
1123 pre_dl(DECL_ARGS)
1124 {
1125
1126 print_offs("6n", 0);
1127 return 1;
1128 }
1129
1130 static void
1131 post_dl(DECL_ARGS)
1132 {
1133
1134 print_line(".RE", MMAN_nl);
1135
1136 /* Maybe we are inside an enclosing list? */
1137 if (NULL != n->parent->next)
1138 mid_it();
1139 }
1140
1141 static int
1142 pre_em(DECL_ARGS)
1143 {
1144
1145 font_push('I');
1146 return 1;
1147 }
1148
1149 static int
1150 pre_en(DECL_ARGS)
1151 {
1152
1153 if (NULL == n->norm->Es ||
1154 NULL == n->norm->Es->child)
1155 return 1;
1156
1157 print_word(n->norm->Es->child->string);
1158 outflags &= ~MMAN_spc;
1159 return 1;
1160 }
1161
1162 static void
1163 post_en(DECL_ARGS)
1164 {
1165
1166 if (NULL == n->norm->Es ||
1167 NULL == n->norm->Es->child ||
1168 NULL == n->norm->Es->child->next)
1169 return;
1170
1171 outflags &= ~MMAN_spc;
1172 print_word(n->norm->Es->child->next->string);
1173 return;
1174 }
1175
1176 static int
1177 pre_eo(DECL_ARGS)
1178 {
1179
1180 if (n->end == ENDBODY_NOT &&
1181 n->parent->head->child == NULL &&
1182 n->child != NULL &&
1183 n->child->end != ENDBODY_NOT)
1184 print_word("\\&");
1185 else if (n->end != ENDBODY_NOT ? n->child != NULL :
1186 n->parent->head->child != NULL && (n->child != NULL ||
1187 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
1188 outflags &= ~(MMAN_spc | MMAN_nl);
1189 return 1;
1190 }
1191
1192 static void
1193 post_eo(DECL_ARGS)
1194 {
1195 int body, tail;
1196
1197 if (n->end != ENDBODY_NOT) {
1198 outflags |= MMAN_spc;
1199 return;
1200 }
1201
1202 body = n->child != NULL || n->parent->head->child != NULL;
1203 tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
1204
1205 if (body && tail)
1206 outflags &= ~MMAN_spc;
1207 else if ( ! (body || tail))
1208 print_word("\\&");
1209 else if ( ! tail)
1210 outflags |= MMAN_spc;
1211 }
1212
1213 static int
1214 pre_fa(DECL_ARGS)
1215 {
1216 int am_Fa;
1217
1218 am_Fa = MDOC_Fa == n->tok;
1219
1220 if (am_Fa)
1221 n = n->child;
1222
1223 while (NULL != n) {
1224 font_push('I');
1225 if (am_Fa || NODE_SYNPRETTY & n->flags)
1226 outflags |= MMAN_nbrword;
1227 print_node(meta, n);
1228 font_pop();
1229 if (NULL != (n = n->next))
1230 print_word(",");
1231 }
1232 return 0;
1233 }
1234
1235 static void
1236 post_fa(DECL_ARGS)
1237 {
1238
1239 if (NULL != n->next && MDOC_Fa == n->next->tok)
1240 print_word(",");
1241 }
1242
1243 static int
1244 pre_fd(DECL_ARGS)
1245 {
1246
1247 pre_syn(n);
1248 font_push('B');
1249 return 1;
1250 }
1251
1252 static void
1253 post_fd(DECL_ARGS)
1254 {
1255
1256 font_pop();
1257 outflags |= MMAN_br;
1258 }
1259
1260 static int
1261 pre_fl(DECL_ARGS)
1262 {
1263
1264 font_push('B');
1265 print_word("\\-");
1266 if (n->child != NULL)
1267 outflags &= ~MMAN_spc;
1268 return 1;
1269 }
1270
1271 static void
1272 post_fl(DECL_ARGS)
1273 {
1274
1275 font_pop();
1276 if (!(n->child != NULL ||
1277 n->next == NULL ||
1278 n->next->type == ROFFT_TEXT ||
1279 n->next->flags & NODE_LINE))
1280 outflags &= ~MMAN_spc;
1281 }
1282
1283 static int
1284 pre_fn(DECL_ARGS)
1285 {
1286
1287 pre_syn(n);
1288
1289 n = n->child;
1290 if (NULL == n)
1291 return 0;
1292
1293 if (NODE_SYNPRETTY & n->flags)
1294 print_block(".HP 4n", MMAN_nl);
1295
1296 font_push('B');
1297 print_node(meta, n);
1298 font_pop();
1299 outflags &= ~MMAN_spc;
1300 print_word("(");
1301 outflags &= ~MMAN_spc;
1302
1303 n = n->next;
1304 if (NULL != n)
1305 pre_fa(meta, n);
1306 return 0;
1307 }
1308
1309 static void
1310 post_fn(DECL_ARGS)
1311 {
1312
1313 print_word(")");
1314 if (NODE_SYNPRETTY & n->flags) {
1315 print_word(";");
1316 outflags |= MMAN_PP;
1317 }
1318 }
1319
1320 static int
1321 pre_fo(DECL_ARGS)
1322 {
1323
1324 switch (n->type) {
1325 case ROFFT_BLOCK:
1326 pre_syn(n);
1327 break;
1328 case ROFFT_HEAD:
1329 if (n->child == NULL)
1330 return 0;
1331 if (NODE_SYNPRETTY & n->flags)
1332 print_block(".HP 4n", MMAN_nl);
1333 font_push('B');
1334 break;
1335 case ROFFT_BODY:
1336 outflags &= ~(MMAN_spc | MMAN_nl);
1337 print_word("(");
1338 outflags &= ~MMAN_spc;
1339 break;
1340 default:
1341 break;
1342 }
1343 return 1;
1344 }
1345
1346 static void
1347 post_fo(DECL_ARGS)
1348 {
1349
1350 switch (n->type) {
1351 case ROFFT_HEAD:
1352 if (n->child != NULL)
1353 font_pop();
1354 break;
1355 case ROFFT_BODY:
1356 post_fn(meta, n);
1357 break;
1358 default:
1359 break;
1360 }
1361 }
1362
1363 static int
1364 pre_Ft(DECL_ARGS)
1365 {
1366
1367 pre_syn(n);
1368 font_push('I');
1369 return 1;
1370 }
1371
1372 static void
1373 pre_ft(DECL_ARGS)
1374 {
1375 print_line(".ft", 0);
1376 print_word(n->child->string);
1377 outflags |= MMAN_nl;
1378 }
1379
1380 static int
1381 pre_in(DECL_ARGS)
1382 {
1383
1384 if (NODE_SYNPRETTY & n->flags) {
1385 pre_syn(n);
1386 font_push('B');
1387 print_word("#include <");
1388 outflags &= ~MMAN_spc;
1389 } else {
1390 print_word("<");
1391 outflags &= ~MMAN_spc;
1392 font_push('I');
1393 }
1394 return 1;
1395 }
1396
1397 static void
1398 post_in(DECL_ARGS)
1399 {
1400
1401 if (NODE_SYNPRETTY & n->flags) {
1402 outflags &= ~MMAN_spc;
1403 print_word(">");
1404 font_pop();
1405 outflags |= MMAN_br;
1406 } else {
1407 font_pop();
1408 outflags &= ~MMAN_spc;
1409 print_word(">");
1410 }
1411 }
1412
1413 static int
1414 pre_it(DECL_ARGS)
1415 {
1416 const struct roff_node *bln;
1417
1418 switch (n->type) {
1419 case ROFFT_HEAD:
1420 outflags |= MMAN_PP | MMAN_nl;
1421 bln = n->parent->parent;
1422 if (0 == bln->norm->Bl.comp ||
1423 (NULL == n->parent->prev &&
1424 NULL == bln->parent->prev))
1425 outflags |= MMAN_sp;
1426 outflags &= ~MMAN_br;
1427 switch (bln->norm->Bl.type) {
1428 case LIST_item:
1429 return 0;
1430 case LIST_inset:
1431 case LIST_diag:
1432 case LIST_ohang:
1433 if (bln->norm->Bl.type == LIST_diag)
1434 print_line(".B \"", 0);
1435 else
1436 print_line(".BR \\& \"", 0);
1437 outflags &= ~MMAN_spc;
1438 return 1;
1439 case LIST_bullet:
1440 case LIST_dash:
1441 case LIST_hyphen:
1442 print_width(&bln->norm->Bl, NULL);
1443 TPremain = 0;
1444 outflags |= MMAN_nl;
1445 font_push('B');
1446 if (LIST_bullet == bln->norm->Bl.type)
1447 print_word("\\(bu");
1448 else
1449 print_word("-");
1450 font_pop();
1451 outflags |= MMAN_nl;
1452 return 0;
1453 case LIST_enum:
1454 print_width(&bln->norm->Bl, NULL);
1455 TPremain = 0;
1456 outflags |= MMAN_nl;
1457 print_count(&bln->norm->Bl.count);
1458 outflags |= MMAN_nl;
1459 return 0;
1460 case LIST_hang:
1461 print_width(&bln->norm->Bl, n->child);
1462 TPremain = 0;
1463 outflags |= MMAN_nl;
1464 return 1;
1465 case LIST_tag:
1466 print_width(&bln->norm->Bl, n->child);
1467 putchar('\n');
1468 outflags &= ~MMAN_spc;
1469 return 1;
1470 default:
1471 return 1;
1472 }
1473 default:
1474 break;
1475 }
1476 return 1;
1477 }
1478
1479 /*
1480 * This function is called after closing out an indented block.
1481 * If we are inside an enclosing list, restore its indentation.
1482 */
1483 static void
1484 mid_it(void)
1485 {
1486 char buf[24];
1487
1488 /* Nothing to do outside a list. */
1489 if (0 == Bl_stack_len || 0 == Bl_stack[Bl_stack_len - 1])
1490 return;
1491
1492 /* The indentation has already been set up. */
1493 if (Bl_stack_post[Bl_stack_len - 1])
1494 return;
1495
1496 /* Restore the indentation of the enclosing list. */
1497 print_line(".RS", MMAN_Bk_susp);
1498 (void)snprintf(buf, sizeof(buf), "%dn",
1499 Bl_stack[Bl_stack_len - 1]);
1500 print_word(buf);
1501
1502 /* Remeber to close out this .RS block later. */
1503 Bl_stack_post[Bl_stack_len - 1] = 1;
1504 }
1505
1506 static void
1507 post_it(DECL_ARGS)
1508 {
1509 const struct roff_node *bln;
1510
1511 bln = n->parent->parent;
1512
1513 switch (n->type) {
1514 case ROFFT_HEAD:
1515 switch (bln->norm->Bl.type) {
1516 case LIST_diag:
1517 outflags &= ~MMAN_spc;
1518 print_word("\\ ");
1519 break;
1520 case LIST_ohang:
1521 outflags |= MMAN_br;
1522 break;
1523 default:
1524 break;
1525 }
1526 break;
1527 case ROFFT_BODY:
1528 switch (bln->norm->Bl.type) {
1529 case LIST_bullet:
1530 case LIST_dash:
1531 case LIST_hyphen:
1532 case LIST_enum:
1533 case LIST_hang:
1534 case LIST_tag:
1535 assert(Bl_stack_len);
1536 Bl_stack[--Bl_stack_len] = 0;
1537
1538 /*
1539 * Our indentation had to be restored
1540 * after a child display or child list.
1541 * Close out that indentation block now.
1542 */
1543 if (Bl_stack_post[Bl_stack_len]) {
1544 print_line(".RE", MMAN_nl);
1545 Bl_stack_post[Bl_stack_len] = 0;
1546 }
1547 break;
1548 case LIST_column:
1549 if (NULL != n->next) {
1550 putchar('\t');
1551 outflags &= ~MMAN_spc;
1552 }
1553 break;
1554 default:
1555 break;
1556 }
1557 break;
1558 default:
1559 break;
1560 }
1561 }
1562
1563 static void
1564 post_lb(DECL_ARGS)
1565 {
1566
1567 if (SEC_LIBRARY == n->sec)
1568 outflags |= MMAN_br;
1569 }
1570
1571 static int
1572 pre_lk(DECL_ARGS)
1573 {
1574 const struct roff_node *link, *descr, *punct;
1575
1576 if ((link = n->child) == NULL)
1577 return 0;
1578
1579 /* Find beginning of trailing punctuation. */
1580 punct = n->last;
1581 while (punct != link && punct->flags & NODE_DELIMC)
1582 punct = punct->prev;
1583 punct = punct->next;
1584
1585 /* Link text. */
1586 if ((descr = link->next) != NULL && descr != punct) {
1587 font_push('I');
1588 while (descr != punct) {
1589 print_word(descr->string);
1590 descr = descr->next;
1591 }
1592 font_pop();
1593 print_word(":");
1594 }
1595
1596 /* Link target. */
1597 font_push('B');
1598 print_word(link->string);
1599 font_pop();
1600
1601 /* Trailing punctuation. */
1602 while (punct != NULL) {
1603 print_word(punct->string);
1604 punct = punct->next;
1605 }
1606 return 0;
1607 }
1608
1609 static void
1610 pre_onearg(DECL_ARGS)
1611 {
1612 outflags |= MMAN_nl;
1613 print_word(".");
1614 outflags &= ~MMAN_spc;
1615 print_word(roff_name[n->tok]);
1616 if (n->child != NULL)
1617 print_word(n->child->string);
1618 outflags |= MMAN_nl;
1619 if (n->tok == ROFF_ce)
1620 for (n = n->child->next; n != NULL; n = n->next)
1621 print_node(meta, n);
1622 }
1623
1624 static int
1625 pre_li(DECL_ARGS)
1626 {
1627 font_push('R');
1628 return 1;
1629 }
1630
1631 static int
1632 pre_nm(DECL_ARGS)
1633 {
1634 char *name;
1635
1636 if (n->type == ROFFT_BLOCK) {
1637 outflags |= MMAN_Bk;
1638 pre_syn(n);
1639 }
1640 if (n->type != ROFFT_ELEM && n->type != ROFFT_HEAD)
1641 return 1;
1642 name = n->child == NULL ? NULL : n->child->string;
1643 if (NULL == name)
1644 return 0;
1645 if (n->type == ROFFT_HEAD) {
1646 if (NULL == n->parent->prev)
1647 outflags |= MMAN_sp;
1648 print_block(".HP", 0);
1649 printf(" %dn", man_strlen(name) + 1);
1650 outflags |= MMAN_nl;
1651 }
1652 font_push('B');
1653 return 1;
1654 }
1655
1656 static void
1657 post_nm(DECL_ARGS)
1658 {
1659 switch (n->type) {
1660 case ROFFT_BLOCK:
1661 outflags &= ~MMAN_Bk;
1662 break;
1663 case ROFFT_HEAD:
1664 case ROFFT_ELEM:
1665 if (n->child != NULL && n->child->string != NULL)
1666 font_pop();
1667 break;
1668 default:
1669 break;
1670 }
1671 }
1672
1673 static int
1674 pre_no(DECL_ARGS)
1675 {
1676 outflags |= MMAN_spc_force;
1677 return 1;
1678 }
1679
1680 static void
1681 pre_noarg(DECL_ARGS)
1682 {
1683 outflags |= MMAN_nl;
1684 print_word(".");
1685 outflags &= ~MMAN_spc;
1686 print_word(roff_name[n->tok]);
1687 outflags |= MMAN_nl;
1688 }
1689
1690 static int
1691 pre_ns(DECL_ARGS)
1692 {
1693 outflags &= ~MMAN_spc;
1694 return 0;
1695 }
1696
1697 static void
1698 post_pf(DECL_ARGS)
1699 {
1700
1701 if ( ! (n->next == NULL || n->next->flags & NODE_LINE))
1702 outflags &= ~MMAN_spc;
1703 }
1704
1705 static int
1706 pre_pp(DECL_ARGS)
1707 {
1708
1709 if (MDOC_It != n->parent->tok)
1710 outflags |= MMAN_PP;
1711 outflags |= MMAN_sp | MMAN_nl;
1712 outflags &= ~MMAN_br;
1713 return 0;
1714 }
1715
1716 static int
1717 pre_rs(DECL_ARGS)
1718 {
1719
1720 if (SEC_SEE_ALSO == n->sec) {
1721 outflags |= MMAN_PP | MMAN_sp | MMAN_nl;
1722 outflags &= ~MMAN_br;
1723 }
1724 return 1;
1725 }
1726
1727 static int
1728 pre_skip(DECL_ARGS)
1729 {
1730
1731 return 0;
1732 }
1733
1734 static int
1735 pre_sm(DECL_ARGS)
1736 {
1737
1738 if (NULL == n->child)
1739 outflags ^= MMAN_Sm;
1740 else if (0 == strcmp("on", n->child->string))
1741 outflags |= MMAN_Sm;
1742 else
1743 outflags &= ~MMAN_Sm;
1744
1745 if (MMAN_Sm & outflags)
1746 outflags |= MMAN_spc;
1747
1748 return 0;
1749 }
1750
1751 static void
1752 pre_sp(DECL_ARGS)
1753 {
1754 if (outflags & MMAN_PP) {
1755 outflags &= ~MMAN_PP;
1756 print_line(".PP", 0);
1757 } else {
1758 print_line(".sp", 0);
1759 if (n->child != NULL)
1760 print_word(n->child->string);
1761 }
1762 outflags |= MMAN_nl;
1763 }
1764
1765 static int
1766 pre_sy(DECL_ARGS)
1767 {
1768
1769 font_push('B');
1770 return 1;
1771 }
1772
1773 static void
1774 pre_ta(DECL_ARGS)
1775 {
1776 print_line(".ta", 0);
1777 for (n = n->child; n != NULL; n = n->next)
1778 print_word(n->string);
1779 outflags |= MMAN_nl;
1780 }
1781
1782 static int
1783 pre_vt(DECL_ARGS)
1784 {
1785
1786 if (NODE_SYNPRETTY & n->flags) {
1787 switch (n->type) {
1788 case ROFFT_BLOCK:
1789 pre_syn(n);
1790 return 1;
1791 case ROFFT_BODY:
1792 break;
1793 default:
1794 return 0;
1795 }
1796 }
1797 font_push('I');
1798 return 1;
1799 }
1800
1801 static void
1802 post_vt(DECL_ARGS)
1803 {
1804
1805 if (n->flags & NODE_SYNPRETTY && n->type != ROFFT_BODY)
1806 return;
1807 font_pop();
1808 }
1809
1810 static int
1811 pre_xr(DECL_ARGS)
1812 {
1813
1814 n = n->child;
1815 if (NULL == n)
1816 return 0;
1817 print_node(meta, n);
1818 n = n->next;
1819 if (NULL == n)
1820 return 0;
1821 outflags &= ~MMAN_spc;
1822 print_word("(");
1823 print_node(meta, n);
1824 print_word(")");
1825 return 0;
1826 }
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