1 /* $Id: mdoc_markdown.c,v 1.24 2018/04/11 17:11:13 schwarze Exp $ */
3 * Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
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.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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.
17 #include <sys/types.h>
24 #include "mandoc_aux.h"
31 int (*cond)(struct roff_node *n);
32 int (*pre)(struct roff_node *n);
33 void (*post)(struct roff_node *n);
34 const char *prefix; /* pre-node string constant */
35 const char *suffix; /* post-node string constant */
38 static void md_nodelist(struct roff_node *);
39 static void md_node(struct roff_node *);
40 static const char *md_stack(char c);
41 static void md_preword(void);
42 static void md_rawword(const char *);
43 static void md_word(const char *);
44 static void md_named(const char *);
45 static void md_char(unsigned char);
46 static void md_uri(const char *);
48 static int md_cond_head(struct roff_node *);
49 static int md_cond_body(struct roff_node *);
51 static int md_pre_raw(struct roff_node *);
52 static int md_pre_word(struct roff_node *);
53 static int md_pre_skip(struct roff_node *);
54 static void md_pre_syn(struct roff_node *);
55 static int md_pre_An(struct roff_node *);
56 static int md_pre_Ap(struct roff_node *);
57 static int md_pre_Bd(struct roff_node *);
58 static int md_pre_Bk(struct roff_node *);
59 static int md_pre_Bl(struct roff_node *);
60 static int md_pre_D1(struct roff_node *);
61 static int md_pre_Dl(struct roff_node *);
62 static int md_pre_En(struct roff_node *);
63 static int md_pre_Eo(struct roff_node *);
64 static int md_pre_Fa(struct roff_node *);
65 static int md_pre_Fd(struct roff_node *);
66 static int md_pre_Fn(struct roff_node *);
67 static int md_pre_Fo(struct roff_node *);
68 static int md_pre_In(struct roff_node *);
69 static int md_pre_It(struct roff_node *);
70 static int md_pre_Lk(struct roff_node *);
71 static int md_pre_Mt(struct roff_node *);
72 static int md_pre_Nd(struct roff_node *);
73 static int md_pre_Nm(struct roff_node *);
74 static int md_pre_No(struct roff_node *);
75 static int md_pre_Ns(struct roff_node *);
76 static int md_pre_Pp(struct roff_node *);
77 static int md_pre_Rs(struct roff_node *);
78 static int md_pre_Sh(struct roff_node *);
79 static int md_pre_Sm(struct roff_node *);
80 static int md_pre_Vt(struct roff_node *);
81 static int md_pre_Xr(struct roff_node *);
82 static int md_pre__T(struct roff_node *);
83 static int md_pre_br(struct roff_node *);
85 static void md_post_raw(struct roff_node *);
86 static void md_post_word(struct roff_node *);
87 static void md_post_pc(struct roff_node *);
88 static void md_post_Bk(struct roff_node *);
89 static void md_post_Bl(struct roff_node *);
90 static void md_post_D1(struct roff_node *);
91 static void md_post_En(struct roff_node *);
92 static void md_post_Eo(struct roff_node *);
93 static void md_post_Fa(struct roff_node *);
94 static void md_post_Fd(struct roff_node *);
95 static void md_post_Fl(struct roff_node *);
96 static void md_post_Fn(struct roff_node *);
97 static void md_post_Fo(struct roff_node *);
98 static void md_post_In(struct roff_node *);
99 static void md_post_It(struct roff_node *);
100 static void md_post_Lb(struct roff_node *);
101 static void md_post_Nm(struct roff_node *);
102 static void md_post_Pf(struct roff_node *);
103 static void md_post_Vt(struct roff_node *);
104 static void md_post__T(struct roff_node *);
106 static const struct md_act __md_acts[MDOC_MAX - MDOC_Dd] = {
107 { NULL, NULL, NULL, NULL, NULL }, /* Dd */
108 { NULL, NULL, NULL, NULL, NULL }, /* Dt */
109 { NULL, NULL, NULL, NULL, NULL }, /* Os */
110 { NULL, md_pre_Sh, NULL, NULL, NULL }, /* Sh */
111 { NULL, md_pre_Sh, NULL, NULL, NULL }, /* Ss */
112 { NULL, md_pre_Pp, NULL, NULL, NULL }, /* Pp */
113 { md_cond_body, md_pre_D1, md_post_D1, NULL, NULL }, /* D1 */
114 { md_cond_body, md_pre_Dl, md_post_D1, NULL, NULL }, /* Dl */
115 { md_cond_body, md_pre_Bd, md_post_D1, NULL, NULL }, /* Bd */
116 { NULL, NULL, NULL, NULL, NULL }, /* Ed */
117 { md_cond_body, md_pre_Bl, md_post_Bl, NULL, NULL }, /* Bl */
118 { NULL, NULL, NULL, NULL, NULL }, /* El */
119 { NULL, md_pre_It, md_post_It, NULL, NULL }, /* It */
120 { NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Ad */
121 { NULL, md_pre_An, NULL, NULL, NULL }, /* An */
122 { NULL, md_pre_Ap, NULL, NULL, NULL }, /* Ap */
123 { NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Ar */
124 { NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Cd */
125 { NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Cm */
126 { NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Dv */
127 { NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Er */
128 { NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Ev */
129 { NULL, NULL, NULL, NULL, NULL }, /* Ex */
130 { NULL, md_pre_Fa, md_post_Fa, NULL, NULL }, /* Fa */
131 { NULL, md_pre_Fd, md_post_Fd, "**", "**" }, /* Fd */
132 { NULL, md_pre_raw, md_post_Fl, "**-", "**" }, /* Fl */
133 { NULL, md_pre_Fn, md_post_Fn, NULL, NULL }, /* Fn */
134 { NULL, md_pre_Fd, md_post_raw, "*", "*" }, /* Ft */
135 { NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Ic */
136 { NULL, md_pre_In, md_post_In, NULL, NULL }, /* In */
137 { NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Li */
138 { md_cond_head, md_pre_Nd, NULL, NULL, NULL }, /* Nd */
139 { NULL, md_pre_Nm, md_post_Nm, "**", "**" }, /* Nm */
140 { md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Op */
141 { NULL, md_pre_Fd, md_post_raw, "*", "*" }, /* Ot */
142 { NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Pa */
143 { NULL, NULL, NULL, NULL, NULL }, /* Rv */
144 { NULL, NULL, NULL, NULL, NULL }, /* St */
145 { NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Va */
146 { NULL, md_pre_Vt, md_post_Vt, "*", "*" }, /* Vt */
147 { NULL, md_pre_Xr, NULL, NULL, NULL }, /* Xr */
148 { NULL, NULL, md_post_pc, NULL, NULL }, /* %A */
149 { NULL, md_pre_raw, md_post_pc, "*", "*" }, /* %B */
150 { NULL, NULL, md_post_pc, NULL, NULL }, /* %D */
151 { NULL, md_pre_raw, md_post_pc, "*", "*" }, /* %I */
152 { NULL, md_pre_raw, md_post_pc, "*", "*" }, /* %J */
153 { NULL, NULL, md_post_pc, NULL, NULL }, /* %N */
154 { NULL, NULL, md_post_pc, NULL, NULL }, /* %O */
155 { NULL, NULL, md_post_pc, NULL, NULL }, /* %P */
156 { NULL, NULL, md_post_pc, NULL, NULL }, /* %R */
157 { NULL, md_pre__T, md_post__T, NULL, NULL }, /* %T */
158 { NULL, NULL, md_post_pc, NULL, NULL }, /* %V */
159 { NULL, NULL, NULL, NULL, NULL }, /* Ac */
160 { md_cond_body, md_pre_word, md_post_word, "<", ">" }, /* Ao */
161 { md_cond_body, md_pre_word, md_post_word, "<", ">" }, /* Aq */
162 { NULL, NULL, NULL, NULL, NULL }, /* At */
163 { NULL, NULL, NULL, NULL, NULL }, /* Bc */
164 { NULL, NULL, NULL, NULL, NULL }, /* Bf XXX not implemented */
165 { md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Bo */
166 { md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Bq */
167 { NULL, NULL, NULL, NULL, NULL }, /* Bsx */
168 { NULL, NULL, NULL, NULL, NULL }, /* Bx */
169 { NULL, NULL, NULL, NULL, NULL }, /* Db */
170 { NULL, NULL, NULL, NULL, NULL }, /* Dc */
171 { md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Do */
172 { md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Dq */
173 { NULL, NULL, NULL, NULL, NULL }, /* Ec */
174 { NULL, NULL, NULL, NULL, NULL }, /* Ef */
175 { NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Em */
176 { md_cond_body, md_pre_Eo, md_post_Eo, NULL, NULL }, /* Eo */
177 { NULL, NULL, NULL, NULL, NULL }, /* Fx */
178 { NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Ms */
179 { NULL, md_pre_No, NULL, NULL, NULL }, /* No */
180 { NULL, md_pre_Ns, NULL, NULL, NULL }, /* Ns */
181 { NULL, NULL, NULL, NULL, NULL }, /* Nx */
182 { NULL, NULL, NULL, NULL, NULL }, /* Ox */
183 { NULL, NULL, NULL, NULL, NULL }, /* Pc */
184 { NULL, NULL, md_post_Pf, NULL, NULL }, /* Pf */
185 { md_cond_body, md_pre_word, md_post_word, "(", ")" }, /* Po */
186 { md_cond_body, md_pre_word, md_post_word, "(", ")" }, /* Pq */
187 { NULL, NULL, NULL, NULL, NULL }, /* Qc */
188 { md_cond_body, md_pre_raw, md_post_raw, "'`", "`'" }, /* Ql */
189 { md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Qo */
190 { md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Qq */
191 { NULL, NULL, NULL, NULL, NULL }, /* Re */
192 { md_cond_body, md_pre_Rs, NULL, NULL, NULL }, /* Rs */
193 { NULL, NULL, NULL, NULL, NULL }, /* Sc */
194 { md_cond_body, md_pre_word, md_post_word, "'", "'" }, /* So */
195 { md_cond_body, md_pre_word, md_post_word, "'", "'" }, /* Sq */
196 { NULL, md_pre_Sm, NULL, NULL, NULL }, /* Sm */
197 { NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Sx */
198 { NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Sy */
199 { NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Tn */
200 { NULL, NULL, NULL, NULL, NULL }, /* Ux */
201 { NULL, NULL, NULL, NULL, NULL }, /* Xc */
202 { NULL, NULL, NULL, NULL, NULL }, /* Xo */
203 { NULL, md_pre_Fo, md_post_Fo, "**", "**" }, /* Fo */
204 { NULL, NULL, NULL, NULL, NULL }, /* Fc */
205 { md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Oo */
206 { NULL, NULL, NULL, NULL, NULL }, /* Oc */
207 { NULL, md_pre_Bk, md_post_Bk, NULL, NULL }, /* Bk */
208 { NULL, NULL, NULL, NULL, NULL }, /* Ek */
209 { NULL, NULL, NULL, NULL, NULL }, /* Bt */
210 { NULL, NULL, NULL, NULL, NULL }, /* Hf */
211 { NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Fr */
212 { NULL, NULL, NULL, NULL, NULL }, /* Ud */
213 { NULL, NULL, md_post_Lb, NULL, NULL }, /* Lb */
214 { NULL, md_pre_Pp, NULL, NULL, NULL }, /* Lp */
215 { NULL, md_pre_Lk, NULL, NULL, NULL }, /* Lk */
216 { NULL, md_pre_Mt, NULL, NULL, NULL }, /* Mt */
217 { md_cond_body, md_pre_word, md_post_word, "{", "}" }, /* Brq */
218 { md_cond_body, md_pre_word, md_post_word, "{", "}" }, /* Bro */
219 { NULL, NULL, NULL, NULL, NULL }, /* Brc */
220 { NULL, NULL, md_post_pc, NULL, NULL }, /* %C */
221 { NULL, md_pre_skip, NULL, NULL, NULL }, /* Es */
222 { md_cond_body, md_pre_En, md_post_En, NULL, NULL }, /* En */
223 { NULL, NULL, NULL, NULL, NULL }, /* Dx */
224 { NULL, NULL, md_post_pc, NULL, NULL }, /* %Q */
225 { NULL, md_pre_Lk, md_post_pc, NULL, NULL }, /* %U */
226 { NULL, NULL, NULL, NULL, NULL }, /* Ta */
228 static const struct md_act *const md_acts = __md_acts - MDOC_Dd;
231 #define MD_spc (1 << 0) /* Blank character before next word. */
232 #define MD_spc_force (1 << 1) /* Even before trailing punctuation. */
233 #define MD_nonl (1 << 2) /* Prevent linebreak in markdown code. */
234 #define MD_nl (1 << 3) /* Break markdown code line. */
235 #define MD_br (1 << 4) /* Insert an output line break. */
236 #define MD_sp (1 << 5) /* Insert a paragraph break. */
237 #define MD_Sm (1 << 6) /* Horizontal spacing mode. */
238 #define MD_Bk (1 << 7) /* Word keep mode. */
239 #define MD_An_split (1 << 8) /* Author mode is "split". */
240 #define MD_An_nosplit (1 << 9) /* Author mode is "nosplit". */
242 static int escflags; /* Escape in generated markdown code: */
243 #define ESC_BOL (1 << 0) /* "#*+-" near the beginning of a line. */
244 #define ESC_NUM (1 << 1) /* "." after a leading number. */
245 #define ESC_HYP (1 << 2) /* "(" immediately after "]". */
246 #define ESC_SQU (1 << 4) /* "]" when "[" is open. */
247 #define ESC_FON (1 << 5) /* "*" immediately after unrelated "*". */
248 #define ESC_EOL (1 << 6) /* " " at the and of a line. */
250 static int code_blocks, quote_blocks, list_blocks;
254 markdown_mdoc(void *arg, const struct roff_man *mdoc)
257 md_word(mdoc->meta.title);
258 if (mdoc->meta.msec != NULL) {
261 md_word(mdoc->meta.msec);
265 md_word(mdoc->meta.vol);
266 if (mdoc->meta.arch != NULL) {
268 md_word(mdoc->meta.arch);
273 md_nodelist(mdoc->first->child);
276 md_word(mdoc->meta.os);
278 md_word(mdoc->meta.date);
283 md_nodelist(struct roff_node *n)
292 md_node(struct roff_node *n)
294 const struct md_act *act;
295 int cond, process_children;
297 if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
300 if (outflags & MD_nonl)
301 outflags &= ~(MD_nl | MD_sp);
302 else if (outflags & MD_spc && n->flags & NODE_LINE)
307 process_children = 1;
308 n->flags &= ~NODE_ENDED;
310 if (n->type == ROFFT_TEXT) {
311 if (n->flags & NODE_DELIMC)
312 outflags &= ~(MD_spc | MD_spc_force);
313 else if (outflags & MD_Sm)
314 outflags |= MD_spc_force;
316 if (n->flags & NODE_DELIMO)
317 outflags &= ~(MD_spc | MD_spc_force);
318 else if (outflags & MD_Sm)
320 } else if (n->tok < ROFF_MAX) {
323 process_children = md_pre_br(n);
326 process_children = md_pre_Pp(n);
329 process_children = 0;
333 assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
334 act = md_acts + n->tok;
335 cond = act->cond == NULL || (*act->cond)(n);
336 if (cond && act->pre != NULL &&
337 (n->end == ENDBODY_NOT || n->child != NULL))
338 process_children = (*act->pre)(n);
341 if (process_children && n->child != NULL)
342 md_nodelist(n->child);
344 if (n->flags & NODE_ENDED)
347 if (cond && act->post != NULL)
350 if (n->end != ENDBODY_NOT)
351 n->body->flags |= NODE_ENDED;
371 stack = mandoc_realloc(stack, sz);
377 return stack == NULL ? "" : stack;
381 * Handle vertical and horizontal spacing.
389 * If a list block is nested inside a code block or a blockquote,
390 * blank lines for paragraph breaks no longer work; instead,
391 * they terminate the list. Work around this markdown issue
392 * by using mere line breaks instead.
395 if (list_blocks && outflags & MD_sp) {
401 * End the old line if requested.
402 * Escape whitespace at the end of the markdown line
403 * such that it won't look like an output line break.
406 if (outflags & MD_sp)
408 else if (outflags & MD_br) {
411 } else if (outflags & MD_nl && escflags & ESC_EOL)
414 /* Start a new line if necessary. */
416 if (outflags & (MD_nl | MD_br | MD_sp)) {
418 for (cp = md_stack('\0'); *cp != '\0'; cp++) {
423 outflags &= ~(MD_nl | MD_br | MD_sp);
427 /* Handle horizontal spacing. */
429 } else if (outflags & MD_spc) {
430 if (outflags & MD_Bk)
431 fputs(" ", stdout);
434 escflags &= ~ESC_FON;
438 outflags &= ~(MD_spc_force | MD_nonl);
439 if (outflags & MD_Sm)
446 * Print markdown syntax elements.
447 * Can also be used for constant strings when neither escaping
448 * nor delimiter handling is required.
451 md_rawword(const char *s)
458 if (escflags & ESC_FON) {
459 escflags &= ~ESC_FON;
460 if (*s == '*' && !code_blocks)
461 fputs("‌", stdout);
475 escflags &= ~ESC_SQU;
485 escflags &= ~ESC_EOL;
489 * Print text and mdoc(7) syntax elements.
492 md_word(const char *s)
494 const char *seq, *prevfont, *currfont, *nextfont;
496 int bs, sz, uc, breakline;
498 /* No spacing before closing delimiters. */
499 if (s[0] != '\0' && s[1] == '\0' &&
500 strchr("!),.:;?]", s[0]) != NULL &&
501 (outflags & MD_spc_force) == 0)
509 /* No spacing after opening delimiters. */
510 if ((s[0] == '(' || s[0] == '[') && s[1] == '\0')
514 prevfont = currfont = "";
515 while ((c = *s++) != '\0') {
527 bs = escflags & ESC_BOL && !code_blocks;
535 bs = escflags & ESC_BOL && !code_blocks;
538 bs = escflags & ESC_HYP && !code_blocks;
541 bs = escflags & ESC_NUM && !code_blocks;
550 bs = escflags & ESC_NUM && !code_blocks;
553 if (code_blocks == 0) {
559 if (escflags & ESC_BOL && !code_blocks) {
565 if (code_blocks == 0) {
573 switch (mandoc_escape(&s, &seq, &sz)) {
575 uc = mchars_num2uc(seq + 1, sz - 1);
577 case ESCAPE_NUMBERED:
578 uc = mchars_num2char(seq, sz);
581 uc = mchars_spec2cp(seq, sz);
583 case ESCAPE_FONTBOLD:
586 case ESCAPE_FONTITALIC:
593 case ESCAPE_FONTROMAN:
596 case ESCAPE_FONTPREV:
603 case ESCAPE_SKIPCHAR:
604 case ESCAPE_OVERSTRIKE:
605 /* XXX not implemented */
611 if (nextfont != NULL && !code_blocks) {
612 if (*currfont != '\0') {
614 md_rawword(currfont);
618 if (*currfont != '\0') {
620 md_rawword(currfont);
624 if ((uc < 0x20 && uc != 0x09) ||
625 (uc > 0x7E && uc < 0xA0))
628 seq = mchars_uc2str(uc);
630 outcount += strlen(seq);
635 escflags &= ~ESC_FON;
640 bs = escflags & ESC_SQU && !code_blocks;
650 (*s == '\0' || *s == ' ' || *s == ASCII_NBRSP)) {
653 while (*s == ' ' || *s == ASCII_NBRSP)
657 if (*currfont != '\0') {
659 md_rawword(currfont);
660 } else if (s[-2] == ' ')
663 escflags &= ~ESC_EOL;
667 * Print a single HTML named character reference.
670 md_named(const char *s)
673 escflags &= ~(ESC_FON | ESC_EOL);
678 * Print a single raw character and maintain certain escape flags.
681 md_char(unsigned char c)
688 escflags &= ~ESC_FON;
692 escflags &= ~ESC_HYP;
693 if (c == ' ' || c == '\t' || c == '>')
696 escflags &= ~ESC_NUM;
697 else if (escflags & ESC_BOL)
699 escflags &= ~ESC_BOL;
703 md_cond_head(struct roff_node *n)
705 return n->type == ROFFT_HEAD;
709 md_cond_body(struct roff_node *n)
711 return n->type == ROFFT_BODY;
715 md_pre_raw(struct roff_node *n)
719 if ((prefix = md_acts[n->tok].prefix) != NULL) {
729 md_post_raw(struct roff_node *n)
733 if ((suffix = md_acts[n->tok].suffix) != NULL) {
734 outflags &= ~(MD_spc | MD_nl);
742 md_pre_word(struct roff_node *n)
746 if ((prefix = md_acts[n->tok].prefix) != NULL) {
754 md_post_word(struct roff_node *n)
758 if ((suffix = md_acts[n->tok].suffix) != NULL) {
759 outflags &= ~(MD_spc | MD_nl);
765 md_post_pc(struct roff_node *n)
768 if (n->parent->tok != MDOC_Rs)
770 if (n->next != NULL) {
772 if (n->prev != NULL &&
773 n->prev->tok == n->tok &&
774 n->next->tok == n->tok)
783 md_pre_skip(struct roff_node *n)
789 md_pre_syn(struct roff_node *n)
791 if (n->prev == NULL || ! (n->flags & NODE_SYNPRETTY))
794 if (n->prev->tok == n->tok &&
802 switch (n->prev->tok) {
811 if (n->tok != MDOC_Fn && n->tok != MDOC_Fo) {
823 md_pre_An(struct roff_node *n)
825 switch (n->norm->An.auth) {
827 outflags &= ~MD_An_nosplit;
828 outflags |= MD_An_split;
831 outflags &= ~MD_An_split;
832 outflags |= MD_An_nosplit;
835 if (outflags & MD_An_split)
837 else if (n->sec == SEC_AUTHORS &&
838 ! (outflags & MD_An_nosplit))
839 outflags |= MD_An_split;
845 md_pre_Ap(struct roff_node *n)
854 md_pre_Bd(struct roff_node *n)
856 switch (n->norm->Bd.type) {
866 md_pre_Bk(struct roff_node *n)
880 md_post_Bk(struct roff_node *n)
882 if (n->type == ROFFT_BODY)
887 md_pre_Bl(struct roff_node *n)
889 n->norm->Bl.count = 0;
890 if (n->norm->Bl.type == LIST_column)
897 md_post_Bl(struct roff_node *n)
899 n->norm->Bl.count = 0;
900 if (n->norm->Bl.type == LIST_column)
906 md_pre_D1(struct roff_node *n)
909 * Markdown blockquote syntax does not work inside code blocks.
910 * The best we can do is fall back to another nested code block.
924 md_post_D1(struct roff_node *n)
935 md_pre_Dl(struct roff_node *n)
938 * Markdown code block syntax does not work inside blockquotes.
939 * The best we can do is fall back to another nested blockquote.
953 md_pre_En(struct roff_node *n)
955 if (n->norm->Es == NULL ||
956 n->norm->Es->child == NULL)
959 md_word(n->norm->Es->child->string);
965 md_post_En(struct roff_node *n)
967 if (n->norm->Es == NULL ||
968 n->norm->Es->child == NULL ||
969 n->norm->Es->child->next == NULL)
973 md_word(n->norm->Es->child->next->string);
977 md_pre_Eo(struct roff_node *n)
979 if (n->end == ENDBODY_NOT &&
980 n->parent->head->child == NULL &&
982 n->child->end != ENDBODY_NOT)
984 else if (n->end != ENDBODY_NOT ? n->child != NULL :
985 n->parent->head->child != NULL && (n->child != NULL ||
986 (n->parent->tail != NULL && n->parent->tail->child != NULL)))
987 outflags &= ~(MD_spc | MD_nl);
992 md_post_Eo(struct roff_node *n)
994 if (n->end != ENDBODY_NOT) {
999 if (n->child == NULL && n->parent->head->child == NULL)
1002 if (n->parent->tail != NULL && n->parent->tail->child != NULL)
1003 outflags &= ~MD_spc;
1009 md_pre_Fa(struct roff_node *n)
1013 am_Fa = n->tok == MDOC_Fa;
1020 outflags &= ~MD_spc;
1022 outflags &= ~MD_spc;
1024 if ((n = n->next) != NULL)
1031 md_post_Fa(struct roff_node *n)
1033 if (n->next != NULL && n->next->tok == MDOC_Fa)
1038 md_pre_Fd(struct roff_node *n)
1046 md_post_Fd(struct roff_node *n)
1053 md_post_Fl(struct roff_node *n)
1056 if (n->child == NULL && n->next != NULL &&
1057 n->next->type != ROFFT_TEXT && !(n->next->flags & NODE_LINE))
1058 outflags &= ~MD_spc;
1062 md_pre_Fn(struct roff_node *n)
1066 if ((n = n->child) == NULL)
1070 outflags &= ~MD_spc;
1072 outflags &= ~MD_spc;
1074 outflags &= ~MD_spc;
1077 if ((n = n->next) != NULL)
1083 md_post_Fn(struct roff_node *n)
1086 if (n->flags & NODE_SYNPRETTY) {
1093 md_pre_Fo(struct roff_node *n)
1100 if (n->child == NULL)
1105 outflags &= ~(MD_spc | MD_nl);
1115 md_post_Fo(struct roff_node *n)
1119 if (n->child != NULL)
1131 md_pre_In(struct roff_node *n)
1133 if (n->flags & NODE_SYNPRETTY) {
1136 outflags &= ~MD_spc;
1137 md_word("#include <");
1140 outflags &= ~MD_spc;
1143 outflags &= ~MD_spc;
1148 md_post_In(struct roff_node *n)
1150 if (n->flags & NODE_SYNPRETTY) {
1151 outflags &= ~MD_spc;
1155 outflags &= ~MD_spc;
1161 md_pre_It(struct roff_node *n)
1163 struct roff_node *bln;
1170 bln = n->parent->parent;
1171 if (bln->norm->Bl.comp == 0 &&
1172 bln->norm->Bl.type != LIST_column)
1176 switch (bln->norm->Bl.type) {
1198 if (bln->norm->Bl.count < 99)
1199 bln->norm->Bl.count++;
1200 printf("%d.\t", bln->norm->Bl.count);
1201 escflags &= ~ESC_FON;
1209 outflags &= ~MD_spc;
1210 outflags |= MD_nonl;
1213 if (code_blocks || quote_blocks)
1218 bln = n->parent->parent;
1219 switch (bln->norm->Bl.type) {
1238 md_post_It(struct roff_node *n)
1240 struct roff_node *bln;
1243 if (n->type != ROFFT_BODY)
1246 bln = n->parent->parent;
1247 switch (bln->norm->Bl.type) {
1253 if (code_blocks || quote_blocks)
1262 if (n->next == NULL)
1265 /* Calculate the array index of the current column. */
1268 while ((n = n->prev) != NULL && n->type != ROFFT_HEAD)
1272 * If a width was specified for this column,
1273 * subtract what printed, and
1274 * add the same spacing as in mdoc_term.c.
1277 nc = bln->norm->Bl.ncols;
1278 i = i < nc ? strlen(bln->norm->Bl.cols[i]) - outcount +
1279 (nc < 5 ? 4 : nc == 5 ? 3 : 1) : 1;
1285 outflags &= ~MD_spc;
1286 escflags &= ~ESC_FON;
1296 md_post_Lb(struct roff_node *n)
1298 if (n->sec == SEC_LIBRARY)
1303 md_uri(const char *s)
1305 while (*s != '\0') {
1306 if (strchr("%()<>", *s) != NULL) {
1307 printf("%%%2.2hhX", *s);
1318 md_pre_Lk(struct roff_node *n)
1320 const struct roff_node *link, *descr, *punct;
1322 if ((link = n->child) == NULL)
1325 /* Find beginning of trailing punctuation. */
1327 while (punct != link && punct->flags & NODE_DELIMC)
1328 punct = punct->prev;
1329 punct = punct->next;
1334 descr = link; /* no text */
1336 outflags &= ~MD_spc;
1338 md_word(descr->string);
1339 descr = descr->next;
1340 } while (descr != punct);
1341 outflags &= ~MD_spc;
1345 md_uri(link->string);
1346 outflags &= ~MD_spc;
1349 /* Trailing punctuation. */
1350 while (punct != NULL) {
1351 md_word(punct->string);
1352 punct = punct->next;
1358 md_pre_Mt(struct roff_node *n)
1360 const struct roff_node *nch;
1363 outflags &= ~MD_spc;
1364 for (nch = n->child; nch != NULL; nch = nch->next)
1365 md_word(nch->string);
1366 outflags &= ~MD_spc;
1367 md_rawword("](mailto:");
1368 for (nch = n->child; nch != NULL; nch = nch->next) {
1369 md_uri(nch->string);
1370 if (nch->next != NULL) {
1375 outflags &= ~MD_spc;
1381 md_pre_Nd(struct roff_node *n)
1390 md_pre_Nm(struct roff_node *n)
1408 md_post_Nm(struct roff_node *n)
1424 md_pre_No(struct roff_node *n)
1426 outflags |= MD_spc_force;
1431 md_pre_Ns(struct roff_node *n)
1433 outflags &= ~MD_spc;
1438 md_post_Pf(struct roff_node *n)
1440 if (n->next != NULL && (n->next->flags & NODE_LINE) == 0)
1441 outflags &= ~MD_spc;
1445 md_pre_Pp(struct roff_node *n)
1452 md_pre_Rs(struct roff_node *n)
1454 if (n->sec == SEC_SEE_ALSO)
1460 md_pre_Sh(struct roff_node *n)
1464 if (n->sec == SEC_AUTHORS)
1465 outflags &= ~(MD_An_split | MD_An_nosplit);
1469 md_rawword(n->tok == MDOC_Sh ? "#" : "##");
1481 md_pre_Sm(struct roff_node *n)
1483 if (n->child == NULL)
1485 else if (strcmp("on", n->child->string) == 0)
1490 if (outflags & MD_Sm)
1497 md_pre_Vt(struct roff_node *n)
1513 md_post_Vt(struct roff_node *n)
1526 md_pre_Xr(struct roff_node *n)
1535 outflags &= ~MD_spc;
1543 md_pre__T(struct roff_node *n)
1545 if (n->parent->tok == MDOC_Rs && n->parent->norm->Rs.quote_T)
1549 outflags &= ~MD_spc;
1554 md_post__T(struct roff_node *n)
1556 outflags &= ~MD_spc;
1557 if (n->parent->tok == MDOC_Rs && n->parent->norm->Rs.quote_T)
1565 md_pre_br(struct roff_node *n)