Annotation of mandoc/html.c, Revision 1.239
1.239 ! schwarze 1: /* $Id: html.c,v 1.238 2018/06/25 16:54:59 schwarze Exp $ */
1.1 kristaps 2: /*
1.176 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.221 schwarze 4: * Copyright (c) 2011-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.29 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.186 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.29 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.186 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.29 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.92 kristaps 18: #include "config.h"
19:
1.41 kristaps 20: #include <sys/types.h>
1.30 kristaps 21:
1.1 kristaps 22: #include <assert.h>
1.68 kristaps 23: #include <ctype.h>
1.76 kristaps 24: #include <stdarg.h>
1.229 schwarze 25: #include <stddef.h>
1.29 kristaps 26: #include <stdio.h>
1.63 kristaps 27: #include <stdint.h>
1.1 kristaps 28: #include <stdlib.h>
1.33 kristaps 29: #include <string.h>
1.45 kristaps 30: #include <unistd.h>
1.1 kristaps 31:
1.210 schwarze 32: #include "mandoc_aux.h"
1.229 schwarze 33: #include "mandoc_ohash.h"
1.100 kristaps 34: #include "mandoc.h"
1.210 schwarze 35: #include "roff.h"
1.58 kristaps 36: #include "out.h"
1.51 kristaps 37: #include "html.h"
1.186 schwarze 38: #include "manconf.h"
1.64 kristaps 39: #include "main.h"
1.63 kristaps 40:
1.29 kristaps 41: struct htmldata {
1.63 kristaps 42: const char *name;
1.29 kristaps 43: int flags;
1.196 schwarze 44: #define HTML_NOSTACK (1 << 0)
45: #define HTML_AUTOCLOSE (1 << 1)
46: #define HTML_NLBEFORE (1 << 2)
47: #define HTML_NLBEGIN (1 << 3)
48: #define HTML_NLEND (1 << 4)
49: #define HTML_NLAFTER (1 << 5)
50: #define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER)
51: #define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND)
52: #define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE)
53: #define HTML_INDENT (1 << 6)
54: #define HTML_NOINDENT (1 << 7)
1.29 kristaps 55: };
1.7 kristaps 56:
1.29 kristaps 57: static const struct htmldata htmltags[TAG_MAX] = {
1.196 schwarze 58: {"html", HTML_NLALL},
59: {"head", HTML_NLALL | HTML_INDENT},
60: {"body", HTML_NLALL},
61: {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
62: {"title", HTML_NLAROUND},
63: {"div", HTML_NLAROUND},
1.225 schwarze 64: {"div", 0},
1.196 schwarze 65: {"h1", HTML_NLAROUND},
66: {"h2", HTML_NLAROUND},
67: {"span", 0},
68: {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
69: {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
70: {"a", 0},
71: {"table", HTML_NLALL | HTML_INDENT},
72: {"tr", HTML_NLALL | HTML_INDENT},
73: {"td", HTML_NLAROUND},
74: {"li", HTML_NLAROUND | HTML_INDENT},
75: {"ul", HTML_NLALL | HTML_INDENT},
76: {"ol", HTML_NLALL | HTML_INDENT},
77: {"dl", HTML_NLALL | HTML_INDENT},
78: {"dt", HTML_NLAROUND},
79: {"dd", HTML_NLAROUND | HTML_INDENT},
80: {"pre", HTML_NLALL | HTML_NOINDENT},
1.207 schwarze 81: {"var", 0},
1.206 schwarze 82: {"cite", 0},
1.196 schwarze 83: {"b", 0},
84: {"i", 0},
85: {"code", 0},
86: {"small", 0},
87: {"style", HTML_NLALL | HTML_INDENT},
88: {"math", HTML_NLALL | HTML_INDENT},
89: {"mrow", 0},
90: {"mi", 0},
1.215 schwarze 91: {"mn", 0},
1.196 schwarze 92: {"mo", 0},
93: {"msup", 0},
94: {"msub", 0},
95: {"msubsup", 0},
96: {"mfrac", 0},
97: {"msqrt", 0},
98: {"mfenced", 0},
99: {"mtable", 0},
100: {"mtr", 0},
101: {"mtd", 0},
102: {"munderover", 0},
103: {"munder", 0},
104: {"mover", 0},
1.90 kristaps 105: };
106:
1.229 schwarze 107: /* Avoid duplicate HTML id= attributes. */
108: static struct ohash id_unique;
109:
1.197 schwarze 110: static void print_byte(struct html *, char);
111: static void print_endword(struct html *);
112: static void print_indent(struct html *);
113: static void print_word(struct html *, const char *);
114:
1.184 schwarze 115: static void print_ctag(struct html *, struct tag *);
1.197 schwarze 116: static int print_escape(struct html *, char);
1.195 schwarze 117: static int print_encode(struct html *, const char *, const char *, int);
118: static void print_href(struct html *, const char *, const char *, int);
1.141 kristaps 119: static void print_metaf(struct html *, enum mandoc_esc);
1.82 kristaps 120:
1.156 schwarze 121:
1.180 schwarze 122: void *
1.191 schwarze 123: html_alloc(const struct manoutput *outopts)
1.10 kristaps 124: {
1.30 kristaps 125: struct html *h;
126:
1.128 kristaps 127: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 128:
1.204 schwarze 129: h->tag = NULL;
1.186 schwarze 130: h->style = outopts->style;
131: h->base_man = outopts->man;
132: h->base_includes = outopts->includes;
133: if (outopts->fragment)
134: h->oflags |= HTML_FRAGMENT;
1.43 kristaps 135:
1.229 schwarze 136: mandoc_ohash_init(&id_unique, 4, 0);
137:
1.188 schwarze 138: return h;
1.29 kristaps 139: }
1.10 kristaps 140:
1.29 kristaps 141: void
142: html_free(void *p)
143: {
1.30 kristaps 144: struct tag *tag;
145: struct html *h;
1.229 schwarze 146: char *cp;
147: unsigned int slot;
1.30 kristaps 148:
149: h = (struct html *)p;
1.204 schwarze 150: while ((tag = h->tag) != NULL) {
151: h->tag = tag->next;
1.30 kristaps 152: free(tag);
153: }
1.229 schwarze 154: free(h);
1.53 kristaps 155:
1.229 schwarze 156: cp = ohash_first(&id_unique, &slot);
157: while (cp != NULL) {
158: free(cp);
159: cp = ohash_next(&id_unique, &slot);
160: }
161: ohash_delete(&id_unique);
1.10 kristaps 162: }
1.2 kristaps 163:
1.51 kristaps 164: void
1.29 kristaps 165: print_gen_head(struct html *h)
166: {
1.165 kristaps 167: struct tag *t;
1.41 kristaps 168:
1.194 schwarze 169: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.222 schwarze 170: if (h->style != NULL) {
171: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
172: h->style, "type", "text/css", "media", "all");
173: return;
174: }
1.165 kristaps 175:
1.168 kristaps 176: /*
1.222 schwarze 177: * Print a minimal embedded style sheet.
1.168 kristaps 178: */
1.196 schwarze 179:
1.194 schwarze 180: t = print_otag(h, TAG_STYLE, "");
1.196 schwarze 181: print_text(h, "table.head, table.foot { width: 100%; }");
1.197 schwarze 182: print_endline(h);
1.196 schwarze 183: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197 schwarze 184: print_endline(h);
1.196 schwarze 185: print_text(h, "td.head-vol { text-align: center; }");
1.197 schwarze 186: print_endline(h);
1.198 schwarze 187: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.225 schwarze 188: print_endline(h);
189: print_text(h, "div.Nd, div.Bf, div.Op { display: inline; }");
1.226 schwarze 190: print_endline(h);
1.227 schwarze 191: print_text(h, "span.Pa, span.Ad { font-style: italic; }");
1.228 schwarze 192: print_endline(h);
193: print_text(h, "span.Ms { font-weight: bold; }");
1.224 schwarze 194: print_endline(h);
195: print_text(h, "dl.Bl-diag ");
196: print_byte(h, '>');
197: print_text(h, " dt { font-weight: bold; }");
1.223 schwarze 198: print_endline(h);
199: print_text(h, "code.Nm, code.Fl, code.Cm, code.Ic, "
200: "code.In, code.Fd, code.Fn,");
201: print_endline(h);
202: print_text(h, "code.Cd { font-weight: bold; "
203: "font-family: inherit; }");
1.165 kristaps 204: print_tagq(h, t);
1.4 kristaps 205: }
206:
1.126 schwarze 207: static void
1.132 kristaps 208: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 209: {
1.90 kristaps 210: enum htmlfont font;
1.88 kristaps 211:
212: switch (deco) {
1.156 schwarze 213: case ESCAPE_FONTPREV:
1.90 kristaps 214: font = h->metal;
1.88 kristaps 215: break;
1.156 schwarze 216: case ESCAPE_FONTITALIC:
1.90 kristaps 217: font = HTMLFONT_ITALIC;
218: break;
1.156 schwarze 219: case ESCAPE_FONTBOLD:
1.90 kristaps 220: font = HTMLFONT_BOLD;
1.88 kristaps 221: break;
1.156 schwarze 222: case ESCAPE_FONTBI:
1.152 schwarze 223: font = HTMLFONT_BI;
224: break;
1.156 schwarze 225: case ESCAPE_FONT:
226: case ESCAPE_FONTROMAN:
1.90 kristaps 227: font = HTMLFONT_NONE;
1.88 kristaps 228: break;
229: default:
230: abort();
231: }
232:
1.122 kristaps 233: if (h->metaf) {
234: print_tagq(h, h->metaf);
235: h->metaf = NULL;
236: }
237:
238: h->metal = h->metac;
239: h->metac = font;
240:
1.152 schwarze 241: switch (font) {
1.156 schwarze 242: case HTMLFONT_ITALIC:
1.194 schwarze 243: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 244: break;
1.156 schwarze 245: case HTMLFONT_BOLD:
1.194 schwarze 246: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 247: break;
1.156 schwarze 248: case HTMLFONT_BI:
1.194 schwarze 249: h->metaf = print_otag(h, TAG_B, "");
250: print_otag(h, TAG_I, "");
1.152 schwarze 251: break;
252: default:
253: break;
254: }
1.210 schwarze 255: }
256:
257: char *
1.229 schwarze 258: html_make_id(const struct roff_node *n, int unique)
1.210 schwarze 259: {
260: const struct roff_node *nch;
1.229 schwarze 261: char *buf, *bufs, *cp;
262: unsigned int slot;
263: int suffix;
1.210 schwarze 264:
265: for (nch = n->child; nch != NULL; nch = nch->next)
266: if (nch->type != ROFFT_TEXT)
267: return NULL;
268:
269: buf = NULL;
270: deroff(&buf, n);
1.220 schwarze 271: if (buf == NULL)
272: return NULL;
1.210 schwarze 273:
1.230 schwarze 274: /*
275: * In ID attributes, only use ASCII characters that are
276: * permitted in URL-fragment strings according to the
277: * explicit list at:
278: * https://url.spec.whatwg.org/#url-fragment-string
279: */
1.210 schwarze 280:
281: for (cp = buf; *cp != '\0'; cp++)
1.230 schwarze 282: if (isalnum((unsigned char)*cp) == 0 &&
283: strchr("!$&'()*+,-./:;=?@_~", *cp) == NULL)
1.210 schwarze 284: *cp = '_';
285:
1.229 schwarze 286: if (unique == 0)
287: return buf;
288:
289: /* Avoid duplicate HTML id= attributes. */
290:
291: bufs = NULL;
292: suffix = 1;
293: slot = ohash_qlookup(&id_unique, buf);
294: cp = ohash_find(&id_unique, slot);
295: if (cp != NULL) {
296: while (cp != NULL) {
297: free(bufs);
298: if (++suffix > 127) {
299: free(buf);
300: return NULL;
301: }
302: mandoc_asprintf(&bufs, "%s_%d", buf, suffix);
303: slot = ohash_qlookup(&id_unique, bufs);
304: cp = ohash_find(&id_unique, slot);
305: }
306: free(buf);
307: buf = bufs;
308: }
309: ohash_insert(&id_unique, slot, buf);
1.210 schwarze 310: return buf;
1.88 kristaps 311: }
312:
1.85 kristaps 313: static int
1.197 schwarze 314: print_escape(struct html *h, char c)
1.159 schwarze 315: {
316:
317: switch (c) {
318: case '<':
1.197 schwarze 319: print_word(h, "<");
1.159 schwarze 320: break;
321: case '>':
1.197 schwarze 322: print_word(h, ">");
1.159 schwarze 323: break;
324: case '&':
1.197 schwarze 325: print_word(h, "&");
1.159 schwarze 326: break;
327: case '"':
1.197 schwarze 328: print_word(h, """);
1.159 schwarze 329: break;
330: case ASCII_NBRSP:
1.197 schwarze 331: print_word(h, " ");
1.159 schwarze 332: break;
333: case ASCII_HYPH:
1.197 schwarze 334: print_byte(h, '-');
1.189 schwarze 335: break;
1.159 schwarze 336: case ASCII_BREAK:
337: break;
338: default:
1.188 schwarze 339: return 0;
1.159 schwarze 340: }
1.188 schwarze 341: return 1;
1.159 schwarze 342: }
343:
344: static int
1.195 schwarze 345: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 346: {
1.197 schwarze 347: char numbuf[16];
1.214 schwarze 348: struct tag *t;
349: const char *seq;
1.77 kristaps 350: size_t sz;
1.214 schwarze 351: int c, len, breakline, nospace;
1.132 kristaps 352: enum mandoc_esc esc;
1.214 schwarze 353: static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
1.154 schwarze 354: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14 kristaps 355:
1.195 schwarze 356: if (pend == NULL)
357: pend = strchr(p, '\0');
358:
1.214 schwarze 359: breakline = 0;
1.85 kristaps 360: nospace = 0;
361:
1.195 schwarze 362: while (p < pend) {
1.151 schwarze 363: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
364: h->flags &= ~HTML_SKIPCHAR;
365: p++;
366: continue;
367: }
368:
1.197 schwarze 369: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
1.214 schwarze 370: print_byte(h, *p);
371:
372: if (breakline &&
373: (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
374: t = print_otag(h, TAG_DIV, "");
375: print_text(h, "\\~");
376: print_tagq(h, t);
377: breakline = 0;
378: while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
379: p++;
380: continue;
381: }
1.77 kristaps 382:
1.195 schwarze 383: if (p >= pend)
1.132 kristaps 384: break;
385:
1.214 schwarze 386: if (*p == ' ') {
387: print_endword(h);
388: p++;
389: continue;
390: }
391:
1.197 schwarze 392: if (print_escape(h, *p++))
1.154 schwarze 393: continue;
1.77 kristaps 394:
1.132 kristaps 395: esc = mandoc_escape(&p, &seq, &len);
396: if (ESCAPE_ERROR == esc)
397: break;
1.82 kristaps 398:
1.132 kristaps 399: switch (esc) {
1.156 schwarze 400: case ESCAPE_FONT:
401: case ESCAPE_FONTPREV:
402: case ESCAPE_FONTBOLD:
403: case ESCAPE_FONTITALIC:
404: case ESCAPE_FONTBI:
405: case ESCAPE_FONTROMAN:
1.151 schwarze 406: if (0 == norecurse)
407: print_metaf(h, esc);
408: continue;
1.156 schwarze 409: case ESCAPE_SKIPCHAR:
1.151 schwarze 410: h->flags |= HTML_SKIPCHAR;
411: continue;
412: default:
413: break;
414: }
415:
416: if (h->flags & HTML_SKIPCHAR) {
417: h->flags &= ~HTML_SKIPCHAR;
418: continue;
419: }
420:
421: switch (esc) {
1.156 schwarze 422: case ESCAPE_UNICODE:
1.159 schwarze 423: /* Skip past "u" header. */
1.144 kristaps 424: c = mchars_num2uc(seq + 1, len - 1);
425: break;
1.156 schwarze 426: case ESCAPE_NUMBERED:
1.141 kristaps 427: c = mchars_num2char(seq, len);
1.181 schwarze 428: if (c < 0)
429: continue;
1.82 kristaps 430: break;
1.156 schwarze 431: case ESCAPE_SPECIAL:
1.191 schwarze 432: c = mchars_spec2cp(seq, len);
1.181 schwarze 433: if (c <= 0)
434: continue;
1.132 kristaps 435: break;
1.239 ! schwarze 436: case ESCAPE_DEVICE:
! 437: print_word(h, "html");
! 438: continue;
1.214 schwarze 439: case ESCAPE_BREAK:
440: breakline = 1;
441: continue;
1.156 schwarze 442: case ESCAPE_NOSPACE:
1.132 kristaps 443: if ('\0' == *p)
444: nospace = 1;
1.179 schwarze 445: continue;
1.185 schwarze 446: case ESCAPE_OVERSTRIKE:
447: if (len == 0)
448: continue;
449: c = seq[len - 1];
450: break;
1.82 kristaps 451: default:
1.179 schwarze 452: continue;
1.82 kristaps 453: }
1.181 schwarze 454: if ((c < 0x20 && c != 0x09) ||
455: (c > 0x7E && c < 0xA0))
1.179 schwarze 456: c = 0xFFFD;
1.197 schwarze 457: if (c > 0x7E) {
1.216 schwarze 458: (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197 schwarze 459: print_word(h, numbuf);
460: } else if (print_escape(h, c) == 0)
461: print_byte(h, c);
1.32 kristaps 462: }
1.85 kristaps 463:
1.188 schwarze 464: return nospace;
1.14 kristaps 465: }
466:
1.94 kristaps 467: static void
1.195 schwarze 468: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 469: {
1.195 schwarze 470: const char *p, *pp;
471:
472: pp = man ? h->base_man : h->base_includes;
473: while ((p = strchr(pp, '%')) != NULL) {
474: print_encode(h, pp, p, 1);
475: if (man && p[1] == 'S') {
476: if (sec == NULL)
1.197 schwarze 477: print_byte(h, '1');
1.195 schwarze 478: else
479: print_encode(h, sec, NULL, 1);
480: } else if ((man && p[1] == 'N') ||
481: (man == 0 && p[1] == 'I'))
482: print_encode(h, name, NULL, 1);
483: else
484: print_encode(h, p, p + 2, 1);
485: pp = p + 2;
486: }
487: if (*pp != '\0')
488: print_encode(h, pp, NULL, 1);
1.94 kristaps 489: }
490:
1.51 kristaps 491: struct tag *
1.194 schwarze 492: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 493: {
1.194 schwarze 494: va_list ap;
1.30 kristaps 495: struct tag *t;
1.195 schwarze 496: const char *attr;
1.203 schwarze 497: char *arg1, *arg2;
1.238 schwarze 498: int tflags;
1.196 schwarze 499:
500: tflags = htmltags[tag].flags;
1.30 kristaps 501:
1.204 schwarze 502: /* Push this tag onto the stack of open scopes. */
1.94 kristaps 503:
1.196 schwarze 504: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 505: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 506: t->tag = tag;
1.204 schwarze 507: t->next = h->tag;
508: h->tag = t;
1.30 kristaps 509: } else
510: t = NULL;
1.29 kristaps 511:
1.196 schwarze 512: if (tflags & HTML_NLBEFORE)
1.197 schwarze 513: print_endline(h);
514: if (h->col == 0)
515: print_indent(h);
1.196 schwarze 516: else if ((h->flags & HTML_NOSPACE) == 0) {
517: if (h->flags & HTML_KEEP)
1.216 schwarze 518: print_word(h, " ");
1.196 schwarze 519: else {
520: if (h->flags & HTML_PREKEEP)
521: h->flags |= HTML_KEEP;
1.197 schwarze 522: print_endword(h);
1.105 kristaps 523: }
1.196 schwarze 524: }
1.29 kristaps 525:
1.109 kristaps 526: if ( ! (h->flags & HTML_NONOSPACE))
527: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 528: else
529: h->flags |= HTML_NOSPACE;
1.109 kristaps 530:
1.94 kristaps 531: /* Print out the tag name and attributes. */
532:
1.197 schwarze 533: print_byte(h, '<');
534: print_word(h, htmltags[tag].name);
1.194 schwarze 535:
536: va_start(ap, fmt);
537:
538: while (*fmt != '\0') {
1.203 schwarze 539:
1.238 schwarze 540: /* Parse attributes and arguments. */
1.203 schwarze 541:
542: arg1 = va_arg(ap, char *);
1.238 schwarze 543: arg2 = NULL;
1.194 schwarze 544: switch (*fmt++) {
545: case 'c':
1.195 schwarze 546: attr = "class";
1.194 schwarze 547: break;
548: case 'h':
1.195 schwarze 549: attr = "href";
1.194 schwarze 550: break;
551: case 'i':
1.195 schwarze 552: attr = "id";
1.194 schwarze 553: break;
1.238 schwarze 554: case 's':
555: attr = "style";
556: arg2 = va_arg(ap, char *);
557: break;
1.194 schwarze 558: case '?':
1.203 schwarze 559: attr = arg1;
560: arg1 = va_arg(ap, char *);
1.194 schwarze 561: break;
562: default:
563: abort();
564: }
1.203 schwarze 565: if (*fmt == 'M')
566: arg2 = va_arg(ap, char *);
567: if (arg1 == NULL)
568: continue;
569:
1.238 schwarze 570: /* Print the attributes. */
1.203 schwarze 571:
1.197 schwarze 572: print_byte(h, ' ');
573: print_word(h, attr);
574: print_byte(h, '=');
575: print_byte(h, '"');
1.195 schwarze 576: switch (*fmt) {
1.208 schwarze 577: case 'I':
578: print_href(h, arg1, NULL, 0);
579: fmt++;
580: break;
1.195 schwarze 581: case 'M':
1.203 schwarze 582: print_href(h, arg1, arg2, 1);
1.195 schwarze 583: fmt++;
584: break;
1.208 schwarze 585: case 'R':
586: print_byte(h, '#');
587: print_encode(h, arg1, NULL, 1);
1.195 schwarze 588: fmt++;
589: break;
1.208 schwarze 590: case 'T':
591: print_encode(h, arg1, NULL, 1);
592: print_word(h, "\" title=\"");
593: print_encode(h, arg1, NULL, 1);
1.195 schwarze 594: fmt++;
1.208 schwarze 595: break;
1.195 schwarze 596: default:
1.238 schwarze 597: if (arg2 == NULL)
598: print_encode(h, arg1, NULL, 1);
599: else {
600: print_word(h, arg1);
601: print_byte(h, ':');
602: print_byte(h, ' ');
603: print_word(h, arg2);
604: print_byte(h, ';');
605: }
1.195 schwarze 606: break;
607: }
1.197 schwarze 608: print_byte(h, '"');
1.194 schwarze 609: }
610: va_end(ap);
1.94 kristaps 611:
1.172 kristaps 612: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 613:
1.93 kristaps 614: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 615: print_byte(h, '/');
1.93 kristaps 616:
1.197 schwarze 617: print_byte(h, '>');
1.14 kristaps 618:
1.196 schwarze 619: if (tflags & HTML_NLBEGIN)
1.197 schwarze 620: print_endline(h);
1.196 schwarze 621: else
622: h->flags |= HTML_NOSPACE;
1.117 kristaps 623:
1.196 schwarze 624: if (tflags & HTML_INDENT)
625: h->indent++;
626: if (tflags & HTML_NOINDENT)
627: h->noindent++;
1.117 kristaps 628:
1.188 schwarze 629: return t;
1.14 kristaps 630: }
631:
1.29 kristaps 632: static void
1.184 schwarze 633: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 634: {
1.196 schwarze 635: int tflags;
1.156 schwarze 636:
1.184 schwarze 637: /*
638: * Remember to close out and nullify the current
639: * meta-font and table, if applicable.
640: */
641: if (tag == h->metaf)
642: h->metaf = NULL;
643: if (tag == h->tblt)
644: h->tblt = NULL;
645:
1.196 schwarze 646: tflags = htmltags[tag->tag].flags;
647:
648: if (tflags & HTML_INDENT)
649: h->indent--;
650: if (tflags & HTML_NOINDENT)
651: h->noindent--;
652: if (tflags & HTML_NLEND)
1.197 schwarze 653: print_endline(h);
654: print_indent(h);
655: print_byte(h, '<');
656: print_byte(h, '/');
657: print_word(h, htmltags[tag->tag].name);
658: print_byte(h, '>');
1.196 schwarze 659: if (tflags & HTML_NLAFTER)
1.197 schwarze 660: print_endline(h);
1.184 schwarze 661:
1.204 schwarze 662: h->tag = tag->next;
1.184 schwarze 663: free(tag);
1.14 kristaps 664: }
665:
1.51 kristaps 666: void
1.93 kristaps 667: print_gen_decls(struct html *h)
1.1 kristaps 668: {
1.197 schwarze 669: print_word(h, "<!DOCTYPE html>");
670: print_endline(h);
1.221 schwarze 671: }
672:
673: void
674: print_gen_comment(struct html *h, struct roff_node *n)
675: {
676: int wantblank;
677:
678: print_word(h, "<!-- This is an automatically generated file."
679: " Do not edit.");
680: h->indent = 1;
681: wantblank = 0;
682: while (n != NULL && n->type == ROFFT_COMMENT) {
683: if (strstr(n->string, "-->") == NULL &&
684: (wantblank || *n->string != '\0')) {
685: print_endline(h);
686: print_indent(h);
687: print_word(h, n->string);
688: wantblank = *n->string != '\0';
689: }
690: n = n->next;
691: }
692: if (wantblank)
693: print_endline(h);
694: print_word(h, " -->");
695: print_endline(h);
696: h->indent = 0;
1.1 kristaps 697: }
698:
1.51 kristaps 699: void
1.104 kristaps 700: print_text(struct html *h, const char *word)
1.1 kristaps 701: {
1.197 schwarze 702: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 703: if ( ! (HTML_KEEP & h->flags)) {
704: if (HTML_PREKEEP & h->flags)
705: h->flags |= HTML_KEEP;
1.197 schwarze 706: print_endword(h);
1.105 kristaps 707: } else
1.216 schwarze 708: print_word(h, " ");
1.105 kristaps 709: }
1.30 kristaps 710:
1.122 kristaps 711: assert(NULL == h->metaf);
1.152 schwarze 712: switch (h->metac) {
1.156 schwarze 713: case HTMLFONT_ITALIC:
1.194 schwarze 714: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 715: break;
1.156 schwarze 716: case HTMLFONT_BOLD:
1.194 schwarze 717: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 718: break;
1.156 schwarze 719: case HTMLFONT_BI:
1.194 schwarze 720: h->metaf = print_otag(h, TAG_B, "");
721: print_otag(h, TAG_I, "");
1.152 schwarze 722: break;
723: default:
1.197 schwarze 724: print_indent(h);
1.152 schwarze 725: break;
726: }
1.122 kristaps 727:
1.104 kristaps 728: assert(word);
1.195 schwarze 729: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 730: if ( ! (h->flags & HTML_NONOSPACE))
731: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 732: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 733: } else
1.183 schwarze 734: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 735:
736: if (h->metaf) {
737: print_tagq(h, h->metaf);
738: h->metaf = NULL;
739: }
1.113 schwarze 740:
741: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 742: }
1.30 kristaps 743:
1.51 kristaps 744: void
1.30 kristaps 745: print_tagq(struct html *h, const struct tag *until)
746: {
747: struct tag *tag;
748:
1.204 schwarze 749: while ((tag = h->tag) != NULL) {
1.184 schwarze 750: print_ctag(h, tag);
1.30 kristaps 751: if (until && tag == until)
752: return;
753: }
754: }
755:
1.51 kristaps 756: void
1.30 kristaps 757: print_stagq(struct html *h, const struct tag *suntil)
758: {
759: struct tag *tag;
760:
1.204 schwarze 761: while ((tag = h->tag) != NULL) {
1.30 kristaps 762: if (suntil && tag == suntil)
763: return;
1.184 schwarze 764: print_ctag(h, tag);
1.30 kristaps 765: }
766: }
1.171 kristaps 767:
768: void
769: print_paragraph(struct html *h)
770: {
771: struct tag *t;
772:
1.198 schwarze 773: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 774: print_tagq(h, t);
775: }
776:
1.197 schwarze 777:
778: /***********************************************************************
779: * Low level output functions.
780: * They implement line breaking using a short static buffer.
781: ***********************************************************************/
782:
783: /*
784: * Buffer one HTML output byte.
785: * If the buffer is full, flush and deactivate it and start a new line.
786: * If the buffer is inactive, print directly.
787: */
788: static void
789: print_byte(struct html *h, char c)
790: {
791: if ((h->flags & HTML_BUFFER) == 0) {
792: putchar(c);
793: h->col++;
794: return;
795: }
796:
797: if (h->col + h->bufcol < sizeof(h->buf)) {
798: h->buf[h->bufcol++] = c;
799: return;
800: }
801:
802: putchar('\n');
803: h->col = 0;
804: print_indent(h);
805: putchar(' ');
806: putchar(' ');
807: fwrite(h->buf, h->bufcol, 1, stdout);
808: putchar(c);
809: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
810: h->bufcol = 0;
811: h->flags &= ~HTML_BUFFER;
812: }
813:
1.196 schwarze 814: /*
815: * If something was printed on the current output line, end it.
1.197 schwarze 816: * Not to be called right after print_indent().
1.196 schwarze 817: */
1.202 schwarze 818: void
1.197 schwarze 819: print_endline(struct html *h)
1.196 schwarze 820: {
1.197 schwarze 821: if (h->col == 0)
1.196 schwarze 822: return;
823:
1.197 schwarze 824: if (h->bufcol) {
825: putchar(' ');
826: fwrite(h->buf, h->bufcol, 1, stdout);
827: h->bufcol = 0;
828: }
1.196 schwarze 829: putchar('\n');
1.197 schwarze 830: h->col = 0;
831: h->flags |= HTML_NOSPACE;
832: h->flags &= ~HTML_BUFFER;
833: }
834:
835: /*
836: * Flush the HTML output buffer.
837: * If it is inactive, activate it.
838: */
839: static void
840: print_endword(struct html *h)
841: {
842: if (h->noindent) {
843: print_byte(h, ' ');
844: return;
845: }
846:
847: if ((h->flags & HTML_BUFFER) == 0) {
848: h->col++;
849: h->flags |= HTML_BUFFER;
850: } else if (h->bufcol) {
851: putchar(' ');
852: fwrite(h->buf, h->bufcol, 1, stdout);
853: h->col += h->bufcol + 1;
854: }
855: h->bufcol = 0;
1.196 schwarze 856: }
857:
858: /*
859: * If at the beginning of a new output line,
860: * perform indentation and mark the line as containing output.
861: * Make sure to really produce some output right afterwards,
862: * but do not use print_otag() for producing it.
863: */
864: static void
1.197 schwarze 865: print_indent(struct html *h)
1.196 schwarze 866: {
1.197 schwarze 867: size_t i;
1.196 schwarze 868:
1.197 schwarze 869: if (h->col)
1.196 schwarze 870: return;
871:
1.197 schwarze 872: if (h->noindent == 0) {
873: h->col = h->indent * 2;
874: for (i = 0; i < h->col; i++)
1.196 schwarze 875: putchar(' ');
1.197 schwarze 876: }
877: h->flags &= ~HTML_NOSPACE;
878: }
879:
880: /*
881: * Print or buffer some characters
882: * depending on the current HTML output buffer state.
883: */
884: static void
885: print_word(struct html *h, const char *cp)
886: {
887: while (*cp != '\0')
888: print_byte(h, *cp++);
1.68 kristaps 889: }
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