File: | src/usr.bin/mandoc/html.c |
Warning: | line 303, column 10 Access to field 'next' results in a dereference of a null pointer (loaded from variable 'this') |
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1 | /* $OpenBSD: html.c,v 1.150 2022/08/09 11:21:50 schwarze Exp $ */ | |||
2 | /* | |||
3 | * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv> | |||
4 | * Copyright (c) 2011-2015, 2017-2021 Ingo Schwarze <schwarze@openbsd.org> | |||
5 | * Copyright (c) 2022 Anna Vyalkova <cyber@sysrq.in> | |||
6 | * | |||
7 | * Permission to use, copy, modify, and distribute this software for any | |||
8 | * purpose with or without fee is hereby granted, provided that the above | |||
9 | * copyright notice and this permission notice appear in all copies. | |||
10 | * | |||
11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES | |||
12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |||
13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR | |||
14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |||
15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |||
16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |||
17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |||
18 | * | |||
19 | * Common functions for mandoc(1) HTML formatters. | |||
20 | * For use by individual formatters and by the main program. | |||
21 | */ | |||
22 | #include <sys/types.h> | |||
23 | #include <sys/stat.h> | |||
24 | ||||
25 | #include <assert.h> | |||
26 | #include <ctype.h> | |||
27 | #include <stdarg.h> | |||
28 | #include <stddef.h> | |||
29 | #include <stdio.h> | |||
30 | #include <stdint.h> | |||
31 | #include <stdlib.h> | |||
32 | #include <string.h> | |||
33 | #include <unistd.h> | |||
34 | ||||
35 | #include "mandoc_aux.h" | |||
36 | #include "mandoc_ohash.h" | |||
37 | #include "mandoc.h" | |||
38 | #include "roff.h" | |||
39 | #include "out.h" | |||
40 | #include "html.h" | |||
41 | #include "manconf.h" | |||
42 | #include "main.h" | |||
43 | ||||
44 | struct htmldata { | |||
45 | const char *name; | |||
46 | int flags; | |||
47 | #define HTML_INPHRASE(1 << 0) (1 << 0) /* Can appear in phrasing context. */ | |||
48 | #define HTML_TOPHRASE(1 << 1) (1 << 1) /* Establishes phrasing context. */ | |||
49 | #define HTML_NOSTACK(1 << 2) (1 << 2) /* Does not have an end tag. */ | |||
50 | #define HTML_NLBEFORE(1 << 3) (1 << 3) /* Output line break before opening. */ | |||
51 | #define HTML_NLBEGIN(1 << 4) (1 << 4) /* Output line break after opening. */ | |||
52 | #define HTML_NLEND(1 << 5) (1 << 5) /* Output line break before closing. */ | |||
53 | #define HTML_NLAFTER(1 << 6) (1 << 6) /* Output line break after closing. */ | |||
54 | #define HTML_NLAROUND((1 << 3) | (1 << 6)) (HTML_NLBEFORE(1 << 3) | HTML_NLAFTER(1 << 6)) | |||
55 | #define HTML_NLINSIDE((1 << 4) | (1 << 5)) (HTML_NLBEGIN(1 << 4) | HTML_NLEND(1 << 5)) | |||
56 | #define HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) (HTML_NLAROUND((1 << 3) | (1 << 6)) | HTML_NLINSIDE((1 << 4) | (1 << 5))) | |||
57 | #define HTML_INDENT(1 << 7) (1 << 7) /* Indent content by two spaces. */ | |||
58 | #define HTML_NOINDENT(1 << 8) (1 << 8) /* Exception: never indent content. */ | |||
59 | }; | |||
60 | ||||
61 | static const struct htmldata htmltags[TAG_MAX] = { | |||
62 | {"html", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
63 | {"head", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
64 | {"meta", HTML_NOSTACK(1 << 2) | HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
65 | {"link", HTML_NOSTACK(1 << 2) | HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
66 | {"style", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
67 | {"title", HTML_NLAROUND((1 << 3) | (1 << 6))}, | |||
68 | {"body", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
69 | {"main", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
70 | {"div", HTML_NLAROUND((1 << 3) | (1 << 6))}, | |||
71 | {"section", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
72 | {"nav", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
73 | {"table", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
74 | {"tr", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
75 | {"td", HTML_NLAROUND((1 << 3) | (1 << 6))}, | |||
76 | {"li", HTML_NLAROUND((1 << 3) | (1 << 6)) | HTML_INDENT(1 << 7)}, | |||
77 | {"ul", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
78 | {"ol", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
79 | {"dl", HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
80 | {"dt", HTML_NLAROUND((1 << 3) | (1 << 6))}, | |||
81 | {"dd", HTML_NLAROUND((1 << 3) | (1 << 6)) | HTML_INDENT(1 << 7)}, | |||
82 | {"h2", HTML_TOPHRASE(1 << 1) | HTML_NLAROUND((1 << 3) | (1 << 6))}, | |||
83 | {"h3", HTML_TOPHRASE(1 << 1) | HTML_NLAROUND((1 << 3) | (1 << 6))}, | |||
84 | {"p", HTML_TOPHRASE(1 << 1) | HTML_NLAROUND((1 << 3) | (1 << 6)) | HTML_INDENT(1 << 7)}, | |||
85 | {"pre", HTML_TOPHRASE(1 << 1) | HTML_NLAROUND((1 << 3) | (1 << 6)) | HTML_NOINDENT(1 << 8)}, | |||
86 | {"a", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
87 | {"b", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
88 | {"cite", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
89 | {"code", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
90 | {"i", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
91 | {"small", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
92 | {"span", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
93 | {"var", HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1)}, | |||
94 | {"br", HTML_INPHRASE(1 << 0) | HTML_NOSTACK(1 << 2) | HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5)))}, | |||
95 | {"hr", HTML_INPHRASE(1 << 0) | HTML_NOSTACK(1 << 2)}, | |||
96 | {"mark", HTML_INPHRASE(1 << 0) }, | |||
97 | {"math", HTML_INPHRASE(1 << 0) | HTML_NLALL(((1 << 3) | (1 << 6)) | ((1 << 4) | (1 << 5))) | HTML_INDENT(1 << 7)}, | |||
98 | {"mrow", 0}, | |||
99 | {"mi", 0}, | |||
100 | {"mn", 0}, | |||
101 | {"mo", 0}, | |||
102 | {"msup", 0}, | |||
103 | {"msub", 0}, | |||
104 | {"msubsup", 0}, | |||
105 | {"mfrac", 0}, | |||
106 | {"msqrt", 0}, | |||
107 | {"mfenced", 0}, | |||
108 | {"mtable", 0}, | |||
109 | {"mtr", 0}, | |||
110 | {"mtd", 0}, | |||
111 | {"munderover", 0}, | |||
112 | {"munder", 0}, | |||
113 | {"mover", 0}, | |||
114 | }; | |||
115 | ||||
116 | /* Avoid duplicate HTML id= attributes. */ | |||
117 | ||||
118 | struct id_entry { | |||
119 | int ord; /* Ordinal number of the latest occurrence. */ | |||
120 | char id[]; /* The id= attribute without any ordinal suffix. */ | |||
121 | }; | |||
122 | static struct ohash id_unique; | |||
123 | ||||
124 | static void html_reset_internal(struct html *); | |||
125 | static void print_byte(struct html *, char); | |||
126 | static void print_endword(struct html *); | |||
127 | static void print_indent(struct html *); | |||
128 | static void print_word(struct html *, const char *); | |||
129 | ||||
130 | static void print_ctag(struct html *, struct tag *); | |||
131 | static int print_escape(struct html *, char); | |||
132 | static int print_encode(struct html *, const char *, const char *, int); | |||
133 | static void print_href(struct html *, const char *, const char *, int); | |||
134 | static void print_metaf(struct html *); | |||
135 | ||||
136 | ||||
137 | void * | |||
138 | html_alloc(const struct manoutput *outopts) | |||
139 | { | |||
140 | struct html *h; | |||
141 | ||||
142 | h = mandoc_calloc(1, sizeof(struct html)); | |||
143 | ||||
144 | h->tag = NULL((void *)0); | |||
145 | h->metac = h->metal = ESCAPE_FONTROMAN; | |||
146 | h->style = outopts->style; | |||
147 | if ((h->base_man1 = outopts->man) == NULL((void *)0)) | |||
148 | h->base_man2 = NULL((void *)0); | |||
149 | else if ((h->base_man2 = strchr(h->base_man1, ';')) != NULL((void *)0)) | |||
150 | *h->base_man2++ = '\0'; | |||
151 | h->base_includes = outopts->includes; | |||
152 | if (outopts->fragment) | |||
153 | h->oflags |= HTML_FRAGMENT(1 << 0); | |||
154 | if (outopts->toc) | |||
155 | h->oflags |= HTML_TOC(1 << 1); | |||
156 | ||||
157 | mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id)__builtin_offsetof(struct id_entry, id)); | |||
158 | ||||
159 | return h; | |||
160 | } | |||
161 | ||||
162 | static void | |||
163 | html_reset_internal(struct html *h) | |||
164 | { | |||
165 | struct tag *tag; | |||
166 | struct id_entry *entry; | |||
167 | unsigned int slot; | |||
168 | ||||
169 | while ((tag = h->tag) != NULL((void *)0)) { | |||
170 | h->tag = tag->next; | |||
171 | free(tag); | |||
172 | } | |||
173 | entry = ohash_first(&id_unique, &slot); | |||
174 | while (entry != NULL((void *)0)) { | |||
175 | free(entry); | |||
176 | entry = ohash_next(&id_unique, &slot); | |||
177 | } | |||
178 | ohash_delete(&id_unique); | |||
179 | } | |||
180 | ||||
181 | void | |||
182 | html_reset(void *p) | |||
183 | { | |||
184 | html_reset_internal(p); | |||
185 | mandoc_ohash_init(&id_unique, 4, offsetof(struct id_entry, id)__builtin_offsetof(struct id_entry, id)); | |||
186 | } | |||
187 | ||||
188 | void | |||
189 | html_free(void *p) | |||
190 | { | |||
191 | html_reset_internal(p); | |||
192 | free(p); | |||
193 | } | |||
194 | ||||
195 | void | |||
196 | print_gen_head(struct html *h) | |||
197 | { | |||
198 | struct tag *t; | |||
199 | ||||
200 | print_otag(h, TAG_META, "?", "charset", "utf-8"); | |||
201 | print_otag(h, TAG_META, "??", "name", "viewport", | |||
202 | "content", "width=device-width, initial-scale=1.0"); | |||
203 | if (h->style != NULL((void *)0)) { | |||
204 | print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet", | |||
205 | h->style, "type", "text/css", "media", "all"); | |||
206 | return; | |||
207 | } | |||
208 | ||||
209 | /* | |||
210 | * Print a minimal embedded style sheet. | |||
211 | */ | |||
212 | ||||
213 | t = print_otag(h, TAG_STYLE, ""); | |||
214 | print_text(h, "table.head, table.foot { width: 100%; }"); | |||
215 | print_endline(h); | |||
216 | print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }"); | |||
217 | print_endline(h); | |||
218 | print_text(h, "td.head-vol { text-align: center; }"); | |||
219 | print_endline(h); | |||
220 | print_text(h, ".Nd, .Bf, .Op { display: inline; }"); | |||
221 | print_endline(h); | |||
222 | print_text(h, ".Pa, .Ad { font-style: italic; }"); | |||
223 | print_endline(h); | |||
224 | print_text(h, ".Ms { font-weight: bold; }"); | |||
225 | print_endline(h); | |||
226 | print_text(h, ".Bl-diag "); | |||
227 | print_byte(h, '>'); | |||
228 | print_text(h, " dt { font-weight: bold; }"); | |||
229 | print_endline(h); | |||
230 | print_text(h, "code.Nm, .Fl, .Cm, .Ic, code.In, .Fd, .Fn, .Cd " | |||
231 | "{ font-weight: bold; font-family: inherit; }"); | |||
232 | print_tagq(h, t); | |||
233 | } | |||
234 | ||||
235 | int | |||
236 | html_setfont(struct html *h, enum mandoc_esc font) | |||
237 | { | |||
238 | switch (font) { | |||
239 | case ESCAPE_FONTPREV: | |||
240 | font = h->metal; | |||
241 | break; | |||
242 | case ESCAPE_FONTITALIC: | |||
243 | case ESCAPE_FONTBOLD: | |||
244 | case ESCAPE_FONTBI: | |||
245 | case ESCAPE_FONTROMAN: | |||
246 | case ESCAPE_FONTCR: | |||
247 | case ESCAPE_FONTCB: | |||
248 | case ESCAPE_FONTCI: | |||
249 | break; | |||
250 | case ESCAPE_FONT: | |||
251 | font = ESCAPE_FONTROMAN; | |||
252 | break; | |||
253 | default: | |||
254 | return 0; | |||
255 | } | |||
256 | h->metal = h->metac; | |||
257 | h->metac = font; | |||
258 | return 1; | |||
259 | } | |||
260 | ||||
261 | static void | |||
262 | print_metaf(struct html *h) | |||
263 | { | |||
264 | if (h->metaf) { | |||
265 | print_tagq(h, h->metaf); | |||
266 | h->metaf = NULL((void *)0); | |||
267 | } | |||
268 | switch (h->metac) { | |||
269 | case ESCAPE_FONTITALIC: | |||
270 | h->metaf = print_otag(h, TAG_I, ""); | |||
271 | break; | |||
272 | case ESCAPE_FONTBOLD: | |||
273 | h->metaf = print_otag(h, TAG_B, ""); | |||
274 | break; | |||
275 | case ESCAPE_FONTBI: | |||
276 | h->metaf = print_otag(h, TAG_B, ""); | |||
277 | print_otag(h, TAG_I, ""); | |||
278 | break; | |||
279 | case ESCAPE_FONTCR: | |||
280 | h->metaf = print_otag(h, TAG_SPAN, "c", "Li"); | |||
281 | break; | |||
282 | case ESCAPE_FONTCB: | |||
283 | h->metaf = print_otag(h, TAG_SPAN, "c", "Li"); | |||
284 | print_otag(h, TAG_B, ""); | |||
285 | break; | |||
286 | case ESCAPE_FONTCI: | |||
287 | h->metaf = print_otag(h, TAG_SPAN, "c", "Li"); | |||
288 | print_otag(h, TAG_I, ""); | |||
289 | break; | |||
290 | default: | |||
291 | break; | |||
292 | } | |||
293 | } | |||
294 | ||||
295 | void | |||
296 | html_close_paragraph(struct html *h) | |||
297 | { | |||
298 | struct tag *this, *next; | |||
299 | int flags; | |||
300 | ||||
301 | this = h->tag; | |||
302 | for (;;) { | |||
303 | next = this->next; | |||
| ||||
304 | flags = htmltags[this->tag].flags; | |||
305 | if (flags & (HTML_INPHRASE(1 << 0) | HTML_TOPHRASE(1 << 1))) | |||
306 | print_ctag(h, this); | |||
307 | if ((flags & HTML_INPHRASE(1 << 0)) == 0) | |||
308 | break; | |||
309 | this = next; | |||
310 | } | |||
311 | } | |||
312 | ||||
313 | /* | |||
314 | * ROFF_nf switches to no-fill mode, ROFF_fi to fill mode. | |||
315 | * TOKEN_NONE does not switch. The old mode is returned. | |||
316 | */ | |||
317 | enum roff_tok | |||
318 | html_fillmode(struct html *h, enum roff_tok want) | |||
319 | { | |||
320 | struct tag *t; | |||
321 | enum roff_tok had; | |||
322 | ||||
323 | for (t = h->tag; t != NULL((void *)0); t = t->next) | |||
| ||||
324 | if (t->tag == TAG_PRE) | |||
325 | break; | |||
326 | ||||
327 | had = t
| |||
328 | ||||
329 | if (want != had) { | |||
330 | switch (want) { | |||
331 | case ROFF_fi: | |||
332 | print_tagq(h, t); | |||
333 | break; | |||
334 | case ROFF_nf: | |||
335 | html_close_paragraph(h); | |||
336 | print_otag(h, TAG_PRE, ""); | |||
337 | break; | |||
338 | case TOKEN_NONE: | |||
339 | break; | |||
340 | default: | |||
341 | abort(); | |||
342 | } | |||
343 | } | |||
344 | return had; | |||
345 | } | |||
346 | ||||
347 | /* | |||
348 | * Allocate a string to be used for the "id=" attribute of an HTML | |||
349 | * element and/or as a segment identifier for a URI in an <a> element. | |||
350 | * The function may fail and return NULL if the node lacks text data | |||
351 | * to create the attribute from. | |||
352 | * The caller is responsible for free(3)ing the returned string. | |||
353 | * | |||
354 | * If the "unique" argument is non-zero, the "id_unique" ohash table | |||
355 | * is used for de-duplication. If the "unique" argument is 1, | |||
356 | * it is the first time the function is called for this tag and | |||
357 | * location, so if an ordinal suffix is needed, it is incremented. | |||
358 | * If the "unique" argument is 2, it is the second time the function | |||
359 | * is called for this tag and location, so the ordinal suffix | |||
360 | * remains unchanged. | |||
361 | */ | |||
362 | char * | |||
363 | html_make_id(const struct roff_node *n, int unique) | |||
364 | { | |||
365 | const struct roff_node *nch; | |||
366 | struct id_entry *entry; | |||
367 | char *buf, *cp; | |||
368 | size_t len; | |||
369 | unsigned int slot; | |||
370 | ||||
371 | if (n->tag != NULL((void *)0)) | |||
372 | buf = mandoc_strdup(n->tag); | |||
373 | else { | |||
374 | switch (n->tok) { | |||
375 | case MDOC_Sh: | |||
376 | case MDOC_Ss: | |||
377 | case MDOC_Sx: | |||
378 | case MAN_SH: | |||
379 | case MAN_SS: | |||
380 | for (nch = n->child; nch != NULL((void *)0); nch = nch->next) | |||
381 | if (nch->type != ROFFT_TEXT) | |||
382 | return NULL((void *)0); | |||
383 | buf = NULL((void *)0); | |||
384 | deroff(&buf, n); | |||
385 | if (buf == NULL((void *)0)) | |||
386 | return NULL((void *)0); | |||
387 | break; | |||
388 | default: | |||
389 | if (n->child == NULL((void *)0) || n->child->type != ROFFT_TEXT) | |||
390 | return NULL((void *)0); | |||
391 | buf = mandoc_strdup(n->child->string); | |||
392 | break; | |||
393 | } | |||
394 | } | |||
395 | ||||
396 | /* | |||
397 | * In ID attributes, only use ASCII characters that are | |||
398 | * permitted in URL-fragment strings according to the | |||
399 | * explicit list at: | |||
400 | * https://url.spec.whatwg.org/#url-fragment-string | |||
401 | * In addition, reserve '~' for ordinal suffixes. | |||
402 | */ | |||
403 | ||||
404 | for (cp = buf; *cp != '\0'; cp++) { | |||
405 | if (*cp == ASCII_HYPH28) | |||
406 | *cp = '-'; | |||
407 | else if (isalnum((unsigned char)*cp) == 0 && | |||
408 | strchr("!$&'()*+,-./:;=?@_", *cp) == NULL((void *)0)) | |||
409 | *cp = '_'; | |||
410 | } | |||
411 | ||||
412 | if (unique == 0) | |||
413 | return buf; | |||
414 | ||||
415 | /* Avoid duplicate HTML id= attributes. */ | |||
416 | ||||
417 | slot = ohash_qlookup(&id_unique, buf); | |||
418 | if ((entry = ohash_find(&id_unique, slot)) == NULL((void *)0)) { | |||
419 | len = strlen(buf) + 1; | |||
420 | entry = mandoc_malloc(sizeof(*entry) + len); | |||
421 | entry->ord = 1; | |||
422 | memcpy(entry->id, buf, len); | |||
423 | ohash_insert(&id_unique, slot, entry); | |||
424 | } else if (unique == 1) | |||
425 | entry->ord++; | |||
426 | ||||
427 | if (entry->ord > 1) { | |||
428 | cp = buf; | |||
429 | mandoc_asprintf(&buf, "%s~%d", cp, entry->ord); | |||
430 | free(cp); | |||
431 | } | |||
432 | return buf; | |||
433 | } | |||
434 | ||||
435 | static int | |||
436 | print_escape(struct html *h, char c) | |||
437 | { | |||
438 | ||||
439 | switch (c) { | |||
440 | case '<': | |||
441 | print_word(h, "<"); | |||
442 | break; | |||
443 | case '>': | |||
444 | print_word(h, ">"); | |||
445 | break; | |||
446 | case '&': | |||
447 | print_word(h, "&"); | |||
448 | break; | |||
449 | case '"': | |||
450 | print_word(h, """); | |||
451 | break; | |||
452 | case ASCII_NBRSP31: | |||
453 | print_word(h, " "); | |||
454 | break; | |||
455 | case ASCII_HYPH28: | |||
456 | print_byte(h, '-'); | |||
457 | break; | |||
458 | case ASCII_BREAK29: | |||
459 | break; | |||
460 | default: | |||
461 | return 0; | |||
462 | } | |||
463 | return 1; | |||
464 | } | |||
465 | ||||
466 | static int | |||
467 | print_encode(struct html *h, const char *p, const char *pend, int norecurse) | |||
468 | { | |||
469 | char numbuf[16]; | |||
470 | const char *seq; | |||
471 | size_t sz; | |||
472 | int c, len, breakline, nospace; | |||
473 | enum mandoc_esc esc; | |||
474 | static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"', | |||
475 | ASCII_NBRSP31, ASCII_HYPH28, ASCII_BREAK29, '\0' }; | |||
476 | ||||
477 | if (pend == NULL((void *)0)) | |||
478 | pend = strchr(p, '\0'); | |||
479 | ||||
480 | breakline = 0; | |||
481 | nospace = 0; | |||
482 | ||||
483 | while (p < pend) { | |||
484 | if (HTML_SKIPCHAR(1 << 6) & h->flags && '\\' != *p) { | |||
485 | h->flags &= ~HTML_SKIPCHAR(1 << 6); | |||
486 | p++; | |||
487 | continue; | |||
488 | } | |||
489 | ||||
490 | for (sz = strcspn(p, rejs); sz-- && p < pend; p++) | |||
491 | print_byte(h, *p); | |||
492 | ||||
493 | if (breakline && | |||
494 | (p >= pend || *p == ' ' || *p == ASCII_NBRSP31)) { | |||
495 | print_otag(h, TAG_BR, ""); | |||
496 | breakline = 0; | |||
497 | while (p < pend && (*p == ' ' || *p == ASCII_NBRSP31)) | |||
498 | p++; | |||
499 | continue; | |||
500 | } | |||
501 | ||||
502 | if (p >= pend) | |||
503 | break; | |||
504 | ||||
505 | if (*p == ' ') { | |||
506 | print_endword(h); | |||
507 | p++; | |||
508 | continue; | |||
509 | } | |||
510 | ||||
511 | if (print_escape(h, *p++)) | |||
512 | continue; | |||
513 | ||||
514 | esc = mandoc_escape(&p, &seq, &len); | |||
515 | switch (esc) { | |||
516 | case ESCAPE_FONT: | |||
517 | case ESCAPE_FONTPREV: | |||
518 | case ESCAPE_FONTBOLD: | |||
519 | case ESCAPE_FONTITALIC: | |||
520 | case ESCAPE_FONTBI: | |||
521 | case ESCAPE_FONTROMAN: | |||
522 | case ESCAPE_FONTCR: | |||
523 | case ESCAPE_FONTCB: | |||
524 | case ESCAPE_FONTCI: | |||
525 | if (0 == norecurse) { | |||
526 | h->flags |= HTML_NOSPACE(1 << 0); | |||
527 | if (html_setfont(h, esc)) | |||
528 | print_metaf(h); | |||
529 | h->flags &= ~HTML_NOSPACE(1 << 0); | |||
530 | } | |||
531 | continue; | |||
532 | case ESCAPE_SKIPCHAR: | |||
533 | h->flags |= HTML_SKIPCHAR(1 << 6); | |||
534 | continue; | |||
535 | case ESCAPE_ERROR: | |||
536 | continue; | |||
537 | default: | |||
538 | break; | |||
539 | } | |||
540 | ||||
541 | if (h->flags & HTML_SKIPCHAR(1 << 6)) { | |||
542 | h->flags &= ~HTML_SKIPCHAR(1 << 6); | |||
543 | continue; | |||
544 | } | |||
545 | ||||
546 | switch (esc) { | |||
547 | case ESCAPE_UNICODE: | |||
548 | /* Skip past "u" header. */ | |||
549 | c = mchars_num2uc(seq + 1, len - 1); | |||
550 | break; | |||
551 | case ESCAPE_NUMBERED: | |||
552 | c = mchars_num2char(seq, len); | |||
553 | if (c < 0) | |||
554 | continue; | |||
555 | break; | |||
556 | case ESCAPE_SPECIAL: | |||
557 | c = mchars_spec2cp(seq, len); | |||
558 | if (c <= 0) | |||
559 | continue; | |||
560 | break; | |||
561 | case ESCAPE_UNDEF: | |||
562 | c = *seq; | |||
563 | break; | |||
564 | case ESCAPE_DEVICE: | |||
565 | print_word(h, "html"); | |||
566 | continue; | |||
567 | case ESCAPE_BREAK: | |||
568 | breakline = 1; | |||
569 | continue; | |||
570 | case ESCAPE_NOSPACE: | |||
571 | if ('\0' == *p) | |||
572 | nospace = 1; | |||
573 | continue; | |||
574 | case ESCAPE_OVERSTRIKE: | |||
575 | if (len == 0) | |||
576 | continue; | |||
577 | c = seq[len - 1]; | |||
578 | break; | |||
579 | default: | |||
580 | continue; | |||
581 | } | |||
582 | if ((c < 0x20 && c != 0x09) || | |||
583 | (c > 0x7E && c < 0xA0)) | |||
584 | c = 0xFFFD; | |||
585 | if (c > 0x7E) { | |||
586 | (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c); | |||
587 | print_word(h, numbuf); | |||
588 | } else if (print_escape(h, c) == 0) | |||
589 | print_byte(h, c); | |||
590 | } | |||
591 | ||||
592 | return nospace; | |||
593 | } | |||
594 | ||||
595 | static void | |||
596 | print_href(struct html *h, const char *name, const char *sec, int man) | |||
597 | { | |||
598 | struct stat sb; | |||
599 | const char *p, *pp; | |||
600 | char *filename; | |||
601 | ||||
602 | if (man) { | |||
603 | pp = h->base_man1; | |||
604 | if (h->base_man2 != NULL((void *)0)) { | |||
605 | mandoc_asprintf(&filename, "%s.%s", name, sec); | |||
606 | if (stat(filename, &sb) == -1) | |||
607 | pp = h->base_man2; | |||
608 | free(filename); | |||
609 | } | |||
610 | } else | |||
611 | pp = h->base_includes; | |||
612 | ||||
613 | while ((p = strchr(pp, '%')) != NULL((void *)0)) { | |||
614 | print_encode(h, pp, p, 1); | |||
615 | if (man && p[1] == 'S') { | |||
616 | if (sec == NULL((void *)0)) | |||
617 | print_byte(h, '1'); | |||
618 | else | |||
619 | print_encode(h, sec, NULL((void *)0), 1); | |||
620 | } else if ((man && p[1] == 'N') || | |||
621 | (man == 0 && p[1] == 'I')) | |||
622 | print_encode(h, name, NULL((void *)0), 1); | |||
623 | else | |||
624 | print_encode(h, p, p + 2, 1); | |||
625 | pp = p + 2; | |||
626 | } | |||
627 | if (*pp != '\0') | |||
628 | print_encode(h, pp, NULL((void *)0), 1); | |||
629 | } | |||
630 | ||||
631 | struct tag * | |||
632 | print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) | |||
633 | { | |||
634 | va_list ap; | |||
635 | struct tag *t; | |||
636 | const char *attr; | |||
637 | char *arg1, *arg2; | |||
638 | int style_written, tflags; | |||
639 | ||||
640 | tflags = htmltags[tag].flags; | |||
641 | ||||
642 | /* Flow content is not allowed in phrasing context. */ | |||
643 | ||||
644 | if ((tflags & HTML_INPHRASE(1 << 0)) == 0) { | |||
645 | for (t = h->tag; t != NULL((void *)0); t = t->next) { | |||
646 | if (t->closed) | |||
647 | continue; | |||
648 | assert((htmltags[t->tag].flags & HTML_TOPHRASE) == 0)(((htmltags[t->tag].flags & (1 << 1)) == 0) ? (void )0 : __assert2("/usr/src/usr.bin/mandoc/html.c", 648, __func__ , "(htmltags[t->tag].flags & HTML_TOPHRASE) == 0")); | |||
649 | break; | |||
650 | } | |||
651 | ||||
652 | /* | |||
653 | * Always wrap phrasing elements in a paragraph | |||
654 | * unless already contained in some flow container; | |||
655 | * never put them directly into a section. | |||
656 | */ | |||
657 | ||||
658 | } else if (tflags & HTML_TOPHRASE(1 << 1) && h->tag->tag == TAG_SECTION) | |||
659 | print_otag(h, TAG_P, "c", "Pp"); | |||
660 | ||||
661 | /* Push this tag onto the stack of open scopes. */ | |||
662 | ||||
663 | if ((tflags & HTML_NOSTACK(1 << 2)) == 0) { | |||
664 | t = mandoc_malloc(sizeof(struct tag)); | |||
665 | t->tag = tag; | |||
666 | t->next = h->tag; | |||
667 | t->refcnt = 0; | |||
668 | t->closed = 0; | |||
669 | h->tag = t; | |||
670 | } else | |||
671 | t = NULL((void *)0); | |||
672 | ||||
673 | if (tflags & HTML_NLBEFORE(1 << 3)) | |||
674 | print_endline(h); | |||
675 | if (h->col == 0) | |||
676 | print_indent(h); | |||
677 | else if ((h->flags & HTML_NOSPACE(1 << 0)) == 0) { | |||
678 | if (h->flags & HTML_KEEP(1 << 2)) | |||
679 | print_word(h, " "); | |||
680 | else { | |||
681 | if (h->flags & HTML_PREKEEP(1 << 3)) | |||
682 | h->flags |= HTML_KEEP(1 << 2); | |||
683 | print_endword(h); | |||
684 | } | |||
685 | } | |||
686 | ||||
687 | if ( ! (h->flags & HTML_NONOSPACE(1 << 4))) | |||
688 | h->flags &= ~HTML_NOSPACE(1 << 0); | |||
689 | else | |||
690 | h->flags |= HTML_NOSPACE(1 << 0); | |||
691 | ||||
692 | /* Print out the tag name and attributes. */ | |||
693 | ||||
694 | print_byte(h, '<'); | |||
695 | print_word(h, htmltags[tag].name); | |||
696 | ||||
697 | va_start(ap, fmt)__builtin_va_start((ap), fmt); | |||
698 | ||||
699 | while (*fmt != '\0' && *fmt != 's') { | |||
700 | ||||
701 | /* Parse attributes and arguments. */ | |||
702 | ||||
703 | arg1 = va_arg(ap, char *)__builtin_va_arg((ap), char *); | |||
704 | arg2 = NULL((void *)0); | |||
705 | switch (*fmt++) { | |||
706 | case 'c': | |||
707 | attr = "class"; | |||
708 | break; | |||
709 | case 'h': | |||
710 | attr = "href"; | |||
711 | break; | |||
712 | case 'i': | |||
713 | attr = "id"; | |||
714 | break; | |||
715 | case 'r': | |||
716 | attr = "role"; | |||
717 | break; | |||
718 | case '?': | |||
719 | attr = arg1; | |||
720 | arg1 = va_arg(ap, char *)__builtin_va_arg((ap), char *); | |||
721 | break; | |||
722 | default: | |||
723 | abort(); | |||
724 | } | |||
725 | if (*fmt == 'M') | |||
726 | arg2 = va_arg(ap, char *)__builtin_va_arg((ap), char *); | |||
727 | if (arg1 == NULL((void *)0)) | |||
728 | continue; | |||
729 | ||||
730 | /* Print the attributes. */ | |||
731 | ||||
732 | print_byte(h, ' '); | |||
733 | print_word(h, attr); | |||
734 | print_byte(h, '='); | |||
735 | print_byte(h, '"'); | |||
736 | switch (*fmt) { | |||
737 | case 'I': | |||
738 | print_href(h, arg1, NULL((void *)0), 0); | |||
739 | fmt++; | |||
740 | break; | |||
741 | case 'M': | |||
742 | print_href(h, arg1, arg2, 1); | |||
743 | fmt++; | |||
744 | break; | |||
745 | case 'R': | |||
746 | print_byte(h, '#'); | |||
747 | print_encode(h, arg1, NULL((void *)0), 1); | |||
748 | fmt++; | |||
749 | break; | |||
750 | default: | |||
751 | print_encode(h, arg1, NULL((void *)0), 1); | |||
752 | break; | |||
753 | } | |||
754 | print_byte(h, '"'); | |||
755 | } | |||
756 | ||||
757 | style_written = 0; | |||
758 | while (*fmt++ == 's') { | |||
759 | arg1 = va_arg(ap, char *)__builtin_va_arg((ap), char *); | |||
760 | arg2 = va_arg(ap, char *)__builtin_va_arg((ap), char *); | |||
761 | if (arg2 == NULL((void *)0)) | |||
762 | continue; | |||
763 | print_byte(h, ' '); | |||
764 | if (style_written == 0) { | |||
765 | print_word(h, "style=\""); | |||
766 | style_written = 1; | |||
767 | } | |||
768 | print_word(h, arg1); | |||
769 | print_byte(h, ':'); | |||
770 | print_byte(h, ' '); | |||
771 | print_word(h, arg2); | |||
772 | print_byte(h, ';'); | |||
773 | } | |||
774 | if (style_written) | |||
775 | print_byte(h, '"'); | |||
776 | ||||
777 | va_end(ap)__builtin_va_end((ap)); | |||
778 | ||||
779 | /* Accommodate for "well-formed" singleton escaping. */ | |||
780 | ||||
781 | if (htmltags[tag].flags & HTML_NOSTACK(1 << 2)) | |||
782 | print_byte(h, '/'); | |||
783 | ||||
784 | print_byte(h, '>'); | |||
785 | ||||
786 | if (tflags & HTML_NLBEGIN(1 << 4)) | |||
787 | print_endline(h); | |||
788 | else | |||
789 | h->flags |= HTML_NOSPACE(1 << 0); | |||
790 | ||||
791 | if (tflags & HTML_INDENT(1 << 7)) | |||
792 | h->indent++; | |||
793 | if (tflags & HTML_NOINDENT(1 << 8)) | |||
794 | h->noindent++; | |||
795 | ||||
796 | return t; | |||
797 | } | |||
798 | ||||
799 | /* | |||
800 | * Print an element with an optional "id=" attribute. | |||
801 | * If the element has phrasing content and an "id=" attribute, | |||
802 | * also add a permalink: outside if it can be in phrasing context, | |||
803 | * inside otherwise. | |||
804 | */ | |||
805 | struct tag * | |||
806 | print_otag_id(struct html *h, enum htmltag elemtype, const char *cattr, | |||
807 | struct roff_node *n) | |||
808 | { | |||
809 | struct roff_node *nch; | |||
810 | struct tag *ret, *t; | |||
811 | char *id, *href; | |||
812 | ||||
813 | ret = NULL((void *)0); | |||
814 | id = href = NULL((void *)0); | |||
815 | if (n->flags & NODE_ID(1 << 11)) | |||
816 | id = html_make_id(n, 1); | |||
817 | if (n->flags & NODE_HREF(1 << 12)) | |||
818 | href = id == NULL((void *)0) ? html_make_id(n, 2) : id; | |||
819 | if (href != NULL((void *)0) && htmltags[elemtype].flags & HTML_INPHRASE(1 << 0)) | |||
820 | ret = print_otag(h, TAG_A, "chR", "permalink", href); | |||
821 | t = print_otag(h, elemtype, "ci", cattr, id); | |||
822 | if (ret == NULL((void *)0)) { | |||
823 | ret = t; | |||
824 | if (href != NULL((void *)0) && (nch = n->child) != NULL((void *)0)) { | |||
825 | /* man(7) is safe, it tags phrasing content only. */ | |||
826 | if (n->tok > MDOC_MAX || | |||
827 | htmltags[elemtype].flags & HTML_TOPHRASE(1 << 1)) | |||
828 | nch = NULL((void *)0); | |||
829 | else /* For mdoc(7), beware of nested blocks. */ | |||
830 | while (nch != NULL((void *)0) && nch->type == ROFFT_TEXT) | |||
831 | nch = nch->next; | |||
832 | if (nch == NULL((void *)0)) | |||
833 | print_otag(h, TAG_A, "chR", "permalink", href); | |||
834 | } | |||
835 | } | |||
836 | free(id); | |||
837 | if (id == NULL((void *)0)) | |||
838 | free(href); | |||
839 | return ret; | |||
840 | } | |||
841 | ||||
842 | static void | |||
843 | print_ctag(struct html *h, struct tag *tag) | |||
844 | { | |||
845 | int tflags; | |||
846 | ||||
847 | if (tag->closed == 0) { | |||
848 | tag->closed = 1; | |||
849 | if (tag == h->metaf) | |||
850 | h->metaf = NULL((void *)0); | |||
851 | if (tag == h->tblt) | |||
852 | h->tblt = NULL((void *)0); | |||
853 | ||||
854 | tflags = htmltags[tag->tag].flags; | |||
855 | if (tflags & HTML_INDENT(1 << 7)) | |||
856 | h->indent--; | |||
857 | if (tflags & HTML_NOINDENT(1 << 8)) | |||
858 | h->noindent--; | |||
859 | if (tflags & HTML_NLEND(1 << 5)) | |||
860 | print_endline(h); | |||
861 | print_indent(h); | |||
862 | print_byte(h, '<'); | |||
863 | print_byte(h, '/'); | |||
864 | print_word(h, htmltags[tag->tag].name); | |||
865 | print_byte(h, '>'); | |||
866 | if (tflags & HTML_NLAFTER(1 << 6)) | |||
867 | print_endline(h); | |||
868 | } | |||
869 | if (tag->refcnt == 0) { | |||
870 | h->tag = tag->next; | |||
871 | free(tag); | |||
872 | } | |||
873 | } | |||
874 | ||||
875 | void | |||
876 | print_gen_decls(struct html *h) | |||
877 | { | |||
878 | print_word(h, "<!DOCTYPE html>"); | |||
879 | print_endline(h); | |||
880 | } | |||
881 | ||||
882 | void | |||
883 | print_gen_comment(struct html *h, struct roff_node *n) | |||
884 | { | |||
885 | int wantblank; | |||
886 | ||||
887 | print_word(h, "<!-- This is an automatically generated file." | |||
888 | " Do not edit."); | |||
889 | h->indent = 1; | |||
890 | wantblank = 0; | |||
891 | while (n != NULL((void *)0) && n->type == ROFFT_COMMENT) { | |||
892 | if (strstr(n->string, "-->") == NULL((void *)0) && | |||
893 | (wantblank || *n->string != '\0')) { | |||
894 | print_endline(h); | |||
895 | print_indent(h); | |||
896 | print_word(h, n->string); | |||
897 | wantblank = *n->string != '\0'; | |||
898 | } | |||
899 | n = n->next; | |||
900 | } | |||
901 | if (wantblank) | |||
902 | print_endline(h); | |||
903 | print_word(h, " -->"); | |||
904 | print_endline(h); | |||
905 | h->indent = 0; | |||
906 | } | |||
907 | ||||
908 | void | |||
909 | print_text(struct html *h, const char *word) | |||
910 | { | |||
911 | print_tagged_text(h, word, NULL((void *)0)); | |||
912 | } | |||
913 | ||||
914 | void | |||
915 | print_tagged_text(struct html *h, const char *word, struct roff_node *n) | |||
916 | { | |||
917 | struct tag *t; | |||
918 | char *href; | |||
919 | ||||
920 | /* | |||
921 | * Always wrap text in a paragraph unless already contained in | |||
922 | * some flow container; never put it directly into a section. | |||
923 | */ | |||
924 | ||||
925 | if (h->tag->tag == TAG_SECTION) | |||
926 | print_otag(h, TAG_P, "c", "Pp"); | |||
927 | ||||
928 | /* Output whitespace before this text? */ | |||
929 | ||||
930 | if (h->col && (h->flags & HTML_NOSPACE(1 << 0)) == 0) { | |||
931 | if ( ! (HTML_KEEP(1 << 2) & h->flags)) { | |||
932 | if (HTML_PREKEEP(1 << 3) & h->flags) | |||
933 | h->flags |= HTML_KEEP(1 << 2); | |||
934 | print_endword(h); | |||
935 | } else | |||
936 | print_word(h, " "); | |||
937 | } | |||
938 | ||||
939 | /* | |||
940 | * Optionally switch fonts, optionally write a permalink, then | |||
941 | * print the text, optionally surrounded by HTML whitespace. | |||
942 | */ | |||
943 | ||||
944 | assert(h->metaf == NULL)((h->metaf == ((void *)0)) ? (void)0 : __assert2("/usr/src/usr.bin/mandoc/html.c" , 944, __func__, "h->metaf == NULL")); | |||
945 | print_metaf(h); | |||
946 | print_indent(h); | |||
947 | ||||
948 | if (n != NULL((void *)0) && (href = html_make_id(n, 2)) != NULL((void *)0)) { | |||
949 | t = print_otag(h, TAG_A, "chR", "permalink", href); | |||
950 | free(href); | |||
951 | } else | |||
952 | t = NULL((void *)0); | |||
953 | ||||
954 | if ( ! print_encode(h, word, NULL((void *)0), 0)) { | |||
955 | if ( ! (h->flags & HTML_NONOSPACE(1 << 4))) | |||
956 | h->flags &= ~HTML_NOSPACE(1 << 0); | |||
957 | h->flags &= ~HTML_NONEWLINE(1 << 9); | |||
958 | } else | |||
959 | h->flags |= HTML_NOSPACE(1 << 0) | HTML_NONEWLINE(1 << 9); | |||
960 | ||||
961 | if (h->metaf != NULL((void *)0)) { | |||
962 | print_tagq(h, h->metaf); | |||
963 | h->metaf = NULL((void *)0); | |||
964 | } else if (t != NULL((void *)0)) | |||
965 | print_tagq(h, t); | |||
966 | ||||
967 | h->flags &= ~HTML_IGNDELIM(1 << 1); | |||
968 | } | |||
969 | ||||
970 | void | |||
971 | print_tagq(struct html *h, const struct tag *until) | |||
972 | { | |||
973 | struct tag *this, *next; | |||
974 | ||||
975 | for (this = h->tag; this != NULL((void *)0); this = next) { | |||
976 | next = this == until ? NULL((void *)0) : this->next; | |||
977 | print_ctag(h, this); | |||
978 | } | |||
979 | } | |||
980 | ||||
981 | /* | |||
982 | * Close out all open elements up to but excluding suntil. | |||
983 | * Note that a paragraph just inside stays open together with it | |||
984 | * because paragraphs include subsequent phrasing content. | |||
985 | */ | |||
986 | void | |||
987 | print_stagq(struct html *h, const struct tag *suntil) | |||
988 | { | |||
989 | struct tag *this, *next; | |||
990 | ||||
991 | for (this = h->tag; this != NULL((void *)0); this = next) { | |||
992 | next = this->next; | |||
993 | if (this == suntil || (next == suntil && | |||
994 | (this->tag == TAG_P || this->tag == TAG_PRE))) | |||
995 | break; | |||
996 | print_ctag(h, this); | |||
997 | } | |||
998 | } | |||
999 | ||||
1000 | ||||
1001 | /*********************************************************************** | |||
1002 | * Low level output functions. | |||
1003 | * They implement line breaking using a short static buffer. | |||
1004 | ***********************************************************************/ | |||
1005 | ||||
1006 | /* | |||
1007 | * Buffer one HTML output byte. | |||
1008 | * If the buffer is full, flush and deactivate it and start a new line. | |||
1009 | * If the buffer is inactive, print directly. | |||
1010 | */ | |||
1011 | static void | |||
1012 | print_byte(struct html *h, char c) | |||
1013 | { | |||
1014 | if ((h->flags & HTML_BUFFER(1 << 10)) == 0) { | |||
1015 | putchar(c)(!__isthreaded ? __sputc(c, (&__sF[1])) : (putc)(c, (& __sF[1]))); | |||
1016 | h->col++; | |||
1017 | return; | |||
1018 | } | |||
1019 | ||||
1020 | if (h->col + h->bufcol < sizeof(h->buf)) { | |||
1021 | h->buf[h->bufcol++] = c; | |||
1022 | return; | |||
1023 | } | |||
1024 | ||||
1025 | putchar('\n')(!__isthreaded ? __sputc('\n', (&__sF[1])) : (putc)('\n', (&__sF[1]))); | |||
1026 | h->col = 0; | |||
1027 | print_indent(h); | |||
1028 | putchar(' ')(!__isthreaded ? __sputc(' ', (&__sF[1])) : (putc)(' ', ( &__sF[1]))); | |||
1029 | putchar(' ')(!__isthreaded ? __sputc(' ', (&__sF[1])) : (putc)(' ', ( &__sF[1]))); | |||
1030 | fwrite(h->buf, h->bufcol, 1, stdout(&__sF[1])); | |||
1031 | putchar(c)(!__isthreaded ? __sputc(c, (&__sF[1])) : (putc)(c, (& __sF[1]))); | |||
1032 | h->col = (h->indent + 1) * 2 + h->bufcol + 1; | |||
1033 | h->bufcol = 0; | |||
1034 | h->flags &= ~HTML_BUFFER(1 << 10); | |||
1035 | } | |||
1036 | ||||
1037 | /* | |||
1038 | * If something was printed on the current output line, end it. | |||
1039 | * Not to be called right after print_indent(). | |||
1040 | */ | |||
1041 | void | |||
1042 | print_endline(struct html *h) | |||
1043 | { | |||
1044 | if (h->col == 0) | |||
1045 | return; | |||
1046 | ||||
1047 | if (h->bufcol) { | |||
1048 | putchar(' ')(!__isthreaded ? __sputc(' ', (&__sF[1])) : (putc)(' ', ( &__sF[1]))); | |||
1049 | fwrite(h->buf, h->bufcol, 1, stdout(&__sF[1])); | |||
1050 | h->bufcol = 0; | |||
1051 | } | |||
1052 | putchar('\n')(!__isthreaded ? __sputc('\n', (&__sF[1])) : (putc)('\n', (&__sF[1]))); | |||
1053 | h->col = 0; | |||
1054 | h->flags |= HTML_NOSPACE(1 << 0); | |||
1055 | h->flags &= ~HTML_BUFFER(1 << 10); | |||
1056 | } | |||
1057 | ||||
1058 | /* | |||
1059 | * Flush the HTML output buffer. | |||
1060 | * If it is inactive, activate it. | |||
1061 | */ | |||
1062 | static void | |||
1063 | print_endword(struct html *h) | |||
1064 | { | |||
1065 | if (h->noindent) { | |||
1066 | print_byte(h, ' '); | |||
1067 | return; | |||
1068 | } | |||
1069 | ||||
1070 | if ((h->flags & HTML_BUFFER(1 << 10)) == 0) { | |||
1071 | h->col++; | |||
1072 | h->flags |= HTML_BUFFER(1 << 10); | |||
1073 | } else if (h->bufcol) { | |||
1074 | putchar(' ')(!__isthreaded ? __sputc(' ', (&__sF[1])) : (putc)(' ', ( &__sF[1]))); | |||
1075 | fwrite(h->buf, h->bufcol, 1, stdout(&__sF[1])); | |||
1076 | h->col += h->bufcol + 1; | |||
1077 | } | |||
1078 | h->bufcol = 0; | |||
1079 | } | |||
1080 | ||||
1081 | /* | |||
1082 | * If at the beginning of a new output line, | |||
1083 | * perform indentation and mark the line as containing output. | |||
1084 | * Make sure to really produce some output right afterwards, | |||
1085 | * but do not use print_otag() for producing it. | |||
1086 | */ | |||
1087 | static void | |||
1088 | print_indent(struct html *h) | |||
1089 | { | |||
1090 | size_t i; | |||
1091 | ||||
1092 | if (h->col || h->noindent) | |||
1093 | return; | |||
1094 | ||||
1095 | h->col = h->indent * 2; | |||
1096 | for (i = 0; i < h->col; i++) | |||
1097 | putchar(' ')(!__isthreaded ? __sputc(' ', (&__sF[1])) : (putc)(' ', ( &__sF[1]))); | |||
1098 | } | |||
1099 | ||||
1100 | /* | |||
1101 | * Print or buffer some characters | |||
1102 | * depending on the current HTML output buffer state. | |||
1103 | */ | |||
1104 | static void | |||
1105 | print_word(struct html *h, const char *cp) | |||
1106 | { | |||
1107 | while (*cp != '\0') | |||
1108 | print_byte(h, *cp++); | |||
1109 | } |