Annotation of mandoc/html.c, Revision 1.247
1.247 ! schwarze 1: /* $Id: html.c,v 1.246 2018/12/15 19:30:26 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>
1.240 schwarze 21: #include <sys/stat.h>
1.30 kristaps 22:
1.1 kristaps 23: #include <assert.h>
1.68 kristaps 24: #include <ctype.h>
1.76 kristaps 25: #include <stdarg.h>
1.229 schwarze 26: #include <stddef.h>
1.29 kristaps 27: #include <stdio.h>
1.63 kristaps 28: #include <stdint.h>
1.1 kristaps 29: #include <stdlib.h>
1.33 kristaps 30: #include <string.h>
1.45 kristaps 31: #include <unistd.h>
1.1 kristaps 32:
1.210 schwarze 33: #include "mandoc_aux.h"
1.229 schwarze 34: #include "mandoc_ohash.h"
1.100 kristaps 35: #include "mandoc.h"
1.210 schwarze 36: #include "roff.h"
1.58 kristaps 37: #include "out.h"
1.51 kristaps 38: #include "html.h"
1.186 schwarze 39: #include "manconf.h"
1.64 kristaps 40: #include "main.h"
1.63 kristaps 41:
1.29 kristaps 42: struct htmldata {
1.63 kristaps 43: const char *name;
1.29 kristaps 44: int flags;
1.196 schwarze 45: #define HTML_NOSTACK (1 << 0)
46: #define HTML_AUTOCLOSE (1 << 1)
47: #define HTML_NLBEFORE (1 << 2)
48: #define HTML_NLBEGIN (1 << 3)
49: #define HTML_NLEND (1 << 4)
50: #define HTML_NLAFTER (1 << 5)
51: #define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER)
52: #define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND)
53: #define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE)
54: #define HTML_INDENT (1 << 6)
55: #define HTML_NOINDENT (1 << 7)
1.29 kristaps 56: };
1.7 kristaps 57:
1.29 kristaps 58: static const struct htmldata htmltags[TAG_MAX] = {
1.196 schwarze 59: {"html", HTML_NLALL},
60: {"head", HTML_NLALL | HTML_INDENT},
61: {"body", HTML_NLALL},
62: {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
63: {"title", HTML_NLAROUND},
64: {"div", HTML_NLAROUND},
1.225 schwarze 65: {"div", 0},
1.196 schwarze 66: {"h1", HTML_NLAROUND},
67: {"h2", HTML_NLAROUND},
68: {"span", 0},
69: {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
70: {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
71: {"a", 0},
72: {"table", HTML_NLALL | HTML_INDENT},
73: {"tr", HTML_NLALL | HTML_INDENT},
74: {"td", HTML_NLAROUND},
75: {"li", HTML_NLAROUND | HTML_INDENT},
76: {"ul", HTML_NLALL | HTML_INDENT},
77: {"ol", HTML_NLALL | HTML_INDENT},
78: {"dl", HTML_NLALL | HTML_INDENT},
79: {"dt", HTML_NLAROUND},
80: {"dd", HTML_NLAROUND | HTML_INDENT},
81: {"pre", HTML_NLALL | HTML_NOINDENT},
1.207 schwarze 82: {"var", 0},
1.206 schwarze 83: {"cite", 0},
1.196 schwarze 84: {"b", 0},
85: {"i", 0},
86: {"code", 0},
87: {"small", 0},
88: {"style", HTML_NLALL | HTML_INDENT},
89: {"math", HTML_NLALL | HTML_INDENT},
90: {"mrow", 0},
91: {"mi", 0},
1.215 schwarze 92: {"mn", 0},
1.196 schwarze 93: {"mo", 0},
94: {"msup", 0},
95: {"msub", 0},
96: {"msubsup", 0},
97: {"mfrac", 0},
98: {"msqrt", 0},
99: {"mfenced", 0},
100: {"mtable", 0},
101: {"mtr", 0},
102: {"mtd", 0},
103: {"munderover", 0},
104: {"munder", 0},
105: {"mover", 0},
1.90 kristaps 106: };
107:
1.229 schwarze 108: /* Avoid duplicate HTML id= attributes. */
109: static struct ohash id_unique;
110:
1.197 schwarze 111: static void print_byte(struct html *, char);
112: static void print_endword(struct html *);
113: static void print_indent(struct html *);
114: static void print_word(struct html *, const char *);
115:
1.184 schwarze 116: static void print_ctag(struct html *, struct tag *);
1.197 schwarze 117: static int print_escape(struct html *, char);
1.195 schwarze 118: static int print_encode(struct html *, const char *, const char *, int);
119: static void print_href(struct html *, const char *, const char *, int);
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;
1.240 schwarze 131: if ((h->base_man1 = outopts->man) == NULL)
132: h->base_man2 = NULL;
133: else if ((h->base_man2 = strchr(h->base_man1, ';')) != NULL)
134: *h->base_man2++ = '\0';
1.186 schwarze 135: h->base_includes = outopts->includes;
136: if (outopts->fragment)
137: h->oflags |= HTML_FRAGMENT;
1.241 schwarze 138: if (outopts->toc)
139: h->oflags |= HTML_TOC;
1.43 kristaps 140:
1.229 schwarze 141: mandoc_ohash_init(&id_unique, 4, 0);
142:
1.188 schwarze 143: return h;
1.29 kristaps 144: }
1.10 kristaps 145:
1.29 kristaps 146: void
147: html_free(void *p)
148: {
1.30 kristaps 149: struct tag *tag;
150: struct html *h;
1.229 schwarze 151: char *cp;
152: unsigned int slot;
1.30 kristaps 153:
154: h = (struct html *)p;
1.204 schwarze 155: while ((tag = h->tag) != NULL) {
156: h->tag = tag->next;
1.30 kristaps 157: free(tag);
158: }
1.229 schwarze 159: free(h);
1.53 kristaps 160:
1.229 schwarze 161: cp = ohash_first(&id_unique, &slot);
162: while (cp != NULL) {
163: free(cp);
164: cp = ohash_next(&id_unique, &slot);
165: }
166: ohash_delete(&id_unique);
1.10 kristaps 167: }
1.2 kristaps 168:
1.51 kristaps 169: void
1.29 kristaps 170: print_gen_head(struct html *h)
171: {
1.165 kristaps 172: struct tag *t;
1.41 kristaps 173:
1.194 schwarze 174: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.222 schwarze 175: if (h->style != NULL) {
176: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
177: h->style, "type", "text/css", "media", "all");
178: return;
179: }
1.165 kristaps 180:
1.168 kristaps 181: /*
1.222 schwarze 182: * Print a minimal embedded style sheet.
1.168 kristaps 183: */
1.196 schwarze 184:
1.194 schwarze 185: t = print_otag(h, TAG_STYLE, "");
1.196 schwarze 186: print_text(h, "table.head, table.foot { width: 100%; }");
1.197 schwarze 187: print_endline(h);
1.196 schwarze 188: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197 schwarze 189: print_endline(h);
1.196 schwarze 190: print_text(h, "td.head-vol { text-align: center; }");
1.197 schwarze 191: print_endline(h);
1.198 schwarze 192: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.225 schwarze 193: print_endline(h);
194: print_text(h, "div.Nd, div.Bf, div.Op { display: inline; }");
1.226 schwarze 195: print_endline(h);
1.227 schwarze 196: print_text(h, "span.Pa, span.Ad { font-style: italic; }");
1.228 schwarze 197: print_endline(h);
198: print_text(h, "span.Ms { font-weight: bold; }");
1.224 schwarze 199: print_endline(h);
200: print_text(h, "dl.Bl-diag ");
201: print_byte(h, '>');
202: print_text(h, " dt { font-weight: bold; }");
1.223 schwarze 203: print_endline(h);
204: print_text(h, "code.Nm, code.Fl, code.Cm, code.Ic, "
205: "code.In, code.Fd, code.Fn,");
206: print_endline(h);
207: print_text(h, "code.Cd { font-weight: bold; "
208: "font-family: inherit; }");
1.165 kristaps 209: print_tagq(h, t);
1.4 kristaps 210: }
211:
1.247 ! schwarze 212: void
1.132 kristaps 213: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 214: {
1.90 kristaps 215: enum htmlfont font;
1.88 kristaps 216:
217: switch (deco) {
1.156 schwarze 218: case ESCAPE_FONTPREV:
1.90 kristaps 219: font = h->metal;
1.88 kristaps 220: break;
1.156 schwarze 221: case ESCAPE_FONTITALIC:
1.90 kristaps 222: font = HTMLFONT_ITALIC;
223: break;
1.156 schwarze 224: case ESCAPE_FONTBOLD:
1.90 kristaps 225: font = HTMLFONT_BOLD;
1.88 kristaps 226: break;
1.156 schwarze 227: case ESCAPE_FONTBI:
1.152 schwarze 228: font = HTMLFONT_BI;
229: break;
1.242 schwarze 230: case ESCAPE_FONTCW:
231: font = HTMLFONT_CW;
232: break;
1.156 schwarze 233: case ESCAPE_FONT:
234: case ESCAPE_FONTROMAN:
1.90 kristaps 235: font = HTMLFONT_NONE;
1.88 kristaps 236: break;
237: default:
1.247 ! schwarze 238: return;
1.88 kristaps 239: }
240:
1.122 kristaps 241: if (h->metaf) {
242: print_tagq(h, h->metaf);
243: h->metaf = NULL;
244: }
245:
246: h->metal = h->metac;
247: h->metac = font;
248:
1.152 schwarze 249: switch (font) {
1.156 schwarze 250: case HTMLFONT_ITALIC:
1.194 schwarze 251: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 252: break;
1.156 schwarze 253: case HTMLFONT_BOLD:
1.194 schwarze 254: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 255: break;
1.156 schwarze 256: case HTMLFONT_BI:
1.194 schwarze 257: h->metaf = print_otag(h, TAG_B, "");
258: print_otag(h, TAG_I, "");
1.152 schwarze 259: break;
1.242 schwarze 260: case HTMLFONT_CW:
261: h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
262: break;
1.152 schwarze 263: default:
264: break;
265: }
1.210 schwarze 266: }
267:
268: char *
1.229 schwarze 269: html_make_id(const struct roff_node *n, int unique)
1.210 schwarze 270: {
271: const struct roff_node *nch;
1.229 schwarze 272: char *buf, *bufs, *cp;
273: unsigned int slot;
274: int suffix;
1.210 schwarze 275:
276: for (nch = n->child; nch != NULL; nch = nch->next)
277: if (nch->type != ROFFT_TEXT)
278: return NULL;
279:
280: buf = NULL;
281: deroff(&buf, n);
1.220 schwarze 282: if (buf == NULL)
283: return NULL;
1.210 schwarze 284:
1.230 schwarze 285: /*
286: * In ID attributes, only use ASCII characters that are
287: * permitted in URL-fragment strings according to the
288: * explicit list at:
289: * https://url.spec.whatwg.org/#url-fragment-string
290: */
1.210 schwarze 291:
292: for (cp = buf; *cp != '\0'; cp++)
1.230 schwarze 293: if (isalnum((unsigned char)*cp) == 0 &&
294: strchr("!$&'()*+,-./:;=?@_~", *cp) == NULL)
1.210 schwarze 295: *cp = '_';
296:
1.229 schwarze 297: if (unique == 0)
298: return buf;
299:
300: /* Avoid duplicate HTML id= attributes. */
301:
302: bufs = NULL;
303: suffix = 1;
304: slot = ohash_qlookup(&id_unique, buf);
305: cp = ohash_find(&id_unique, slot);
306: if (cp != NULL) {
307: while (cp != NULL) {
308: free(bufs);
309: if (++suffix > 127) {
310: free(buf);
311: return NULL;
312: }
313: mandoc_asprintf(&bufs, "%s_%d", buf, suffix);
314: slot = ohash_qlookup(&id_unique, bufs);
315: cp = ohash_find(&id_unique, slot);
316: }
317: free(buf);
318: buf = bufs;
319: }
320: ohash_insert(&id_unique, slot, buf);
1.210 schwarze 321: return buf;
1.88 kristaps 322: }
323:
1.85 kristaps 324: static int
1.197 schwarze 325: print_escape(struct html *h, char c)
1.159 schwarze 326: {
327:
328: switch (c) {
329: case '<':
1.197 schwarze 330: print_word(h, "<");
1.159 schwarze 331: break;
332: case '>':
1.197 schwarze 333: print_word(h, ">");
1.159 schwarze 334: break;
335: case '&':
1.197 schwarze 336: print_word(h, "&");
1.159 schwarze 337: break;
338: case '"':
1.197 schwarze 339: print_word(h, """);
1.159 schwarze 340: break;
341: case ASCII_NBRSP:
1.197 schwarze 342: print_word(h, " ");
1.159 schwarze 343: break;
344: case ASCII_HYPH:
1.197 schwarze 345: print_byte(h, '-');
1.189 schwarze 346: break;
1.159 schwarze 347: case ASCII_BREAK:
348: break;
349: default:
1.188 schwarze 350: return 0;
1.159 schwarze 351: }
1.188 schwarze 352: return 1;
1.159 schwarze 353: }
354:
355: static int
1.195 schwarze 356: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 357: {
1.197 schwarze 358: char numbuf[16];
1.214 schwarze 359: const char *seq;
1.77 kristaps 360: size_t sz;
1.214 schwarze 361: int c, len, breakline, nospace;
1.132 kristaps 362: enum mandoc_esc esc;
1.214 schwarze 363: static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
1.154 schwarze 364: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14 kristaps 365:
1.195 schwarze 366: if (pend == NULL)
367: pend = strchr(p, '\0');
368:
1.214 schwarze 369: breakline = 0;
1.85 kristaps 370: nospace = 0;
371:
1.195 schwarze 372: while (p < pend) {
1.151 schwarze 373: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
374: h->flags &= ~HTML_SKIPCHAR;
375: p++;
376: continue;
377: }
378:
1.197 schwarze 379: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
1.214 schwarze 380: print_byte(h, *p);
381:
382: if (breakline &&
383: (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
1.245 schwarze 384: print_otag(h, TAG_BR, "");
1.214 schwarze 385: breakline = 0;
386: while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
387: p++;
388: continue;
389: }
1.77 kristaps 390:
1.195 schwarze 391: if (p >= pend)
1.132 kristaps 392: break;
393:
1.214 schwarze 394: if (*p == ' ') {
395: print_endword(h);
396: p++;
397: continue;
398: }
399:
1.197 schwarze 400: if (print_escape(h, *p++))
1.154 schwarze 401: continue;
1.77 kristaps 402:
1.132 kristaps 403: esc = mandoc_escape(&p, &seq, &len);
404: switch (esc) {
1.156 schwarze 405: case ESCAPE_FONT:
406: case ESCAPE_FONTPREV:
407: case ESCAPE_FONTBOLD:
408: case ESCAPE_FONTITALIC:
409: case ESCAPE_FONTBI:
1.242 schwarze 410: case ESCAPE_FONTCW:
1.156 schwarze 411: case ESCAPE_FONTROMAN:
1.243 schwarze 412: if (0 == norecurse) {
413: h->flags |= HTML_NOSPACE;
1.151 schwarze 414: print_metaf(h, esc);
1.243 schwarze 415: h->flags &= ~HTML_NOSPACE;
416: }
1.151 schwarze 417: continue;
1.156 schwarze 418: case ESCAPE_SKIPCHAR:
1.151 schwarze 419: h->flags |= HTML_SKIPCHAR;
420: continue;
1.246 schwarze 421: case ESCAPE_ERROR:
422: continue;
1.151 schwarze 423: default:
424: break;
425: }
426:
427: if (h->flags & HTML_SKIPCHAR) {
428: h->flags &= ~HTML_SKIPCHAR;
429: continue;
430: }
431:
432: switch (esc) {
1.156 schwarze 433: case ESCAPE_UNICODE:
1.159 schwarze 434: /* Skip past "u" header. */
1.144 kristaps 435: c = mchars_num2uc(seq + 1, len - 1);
436: break;
1.156 schwarze 437: case ESCAPE_NUMBERED:
1.141 kristaps 438: c = mchars_num2char(seq, len);
1.181 schwarze 439: if (c < 0)
440: continue;
1.82 kristaps 441: break;
1.156 schwarze 442: case ESCAPE_SPECIAL:
1.191 schwarze 443: c = mchars_spec2cp(seq, len);
1.181 schwarze 444: if (c <= 0)
445: continue;
1.246 schwarze 446: break;
447: case ESCAPE_UNDEF:
448: c = *seq;
1.132 kristaps 449: break;
1.239 schwarze 450: case ESCAPE_DEVICE:
451: print_word(h, "html");
452: continue;
1.214 schwarze 453: case ESCAPE_BREAK:
454: breakline = 1;
455: continue;
1.156 schwarze 456: case ESCAPE_NOSPACE:
1.132 kristaps 457: if ('\0' == *p)
458: nospace = 1;
1.179 schwarze 459: continue;
1.185 schwarze 460: case ESCAPE_OVERSTRIKE:
461: if (len == 0)
462: continue;
463: c = seq[len - 1];
464: break;
1.82 kristaps 465: default:
1.179 schwarze 466: continue;
1.82 kristaps 467: }
1.181 schwarze 468: if ((c < 0x20 && c != 0x09) ||
469: (c > 0x7E && c < 0xA0))
1.179 schwarze 470: c = 0xFFFD;
1.197 schwarze 471: if (c > 0x7E) {
1.216 schwarze 472: (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197 schwarze 473: print_word(h, numbuf);
474: } else if (print_escape(h, c) == 0)
475: print_byte(h, c);
1.32 kristaps 476: }
1.85 kristaps 477:
1.188 schwarze 478: return nospace;
1.14 kristaps 479: }
480:
1.94 kristaps 481: static void
1.195 schwarze 482: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 483: {
1.240 schwarze 484: struct stat sb;
1.195 schwarze 485: const char *p, *pp;
1.240 schwarze 486: char *filename;
487:
488: if (man) {
489: pp = h->base_man1;
490: if (h->base_man2 != NULL) {
491: mandoc_asprintf(&filename, "%s.%s", name, sec);
492: if (stat(filename, &sb) == -1)
493: pp = h->base_man2;
494: free(filename);
495: }
496: } else
497: pp = h->base_includes;
1.195 schwarze 498:
499: while ((p = strchr(pp, '%')) != NULL) {
500: print_encode(h, pp, p, 1);
501: if (man && p[1] == 'S') {
502: if (sec == NULL)
1.197 schwarze 503: print_byte(h, '1');
1.195 schwarze 504: else
505: print_encode(h, sec, NULL, 1);
506: } else if ((man && p[1] == 'N') ||
507: (man == 0 && p[1] == 'I'))
508: print_encode(h, name, NULL, 1);
509: else
510: print_encode(h, p, p + 2, 1);
511: pp = p + 2;
512: }
513: if (*pp != '\0')
514: print_encode(h, pp, NULL, 1);
1.94 kristaps 515: }
516:
1.51 kristaps 517: struct tag *
1.194 schwarze 518: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 519: {
1.194 schwarze 520: va_list ap;
1.30 kristaps 521: struct tag *t;
1.195 schwarze 522: const char *attr;
1.203 schwarze 523: char *arg1, *arg2;
1.244 schwarze 524: int style_written, tflags;
1.196 schwarze 525:
526: tflags = htmltags[tag].flags;
1.30 kristaps 527:
1.204 schwarze 528: /* Push this tag onto the stack of open scopes. */
1.94 kristaps 529:
1.196 schwarze 530: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 531: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 532: t->tag = tag;
1.204 schwarze 533: t->next = h->tag;
534: h->tag = t;
1.30 kristaps 535: } else
536: t = NULL;
1.29 kristaps 537:
1.196 schwarze 538: if (tflags & HTML_NLBEFORE)
1.197 schwarze 539: print_endline(h);
540: if (h->col == 0)
541: print_indent(h);
1.196 schwarze 542: else if ((h->flags & HTML_NOSPACE) == 0) {
543: if (h->flags & HTML_KEEP)
1.216 schwarze 544: print_word(h, " ");
1.196 schwarze 545: else {
546: if (h->flags & HTML_PREKEEP)
547: h->flags |= HTML_KEEP;
1.197 schwarze 548: print_endword(h);
1.105 kristaps 549: }
1.196 schwarze 550: }
1.29 kristaps 551:
1.109 kristaps 552: if ( ! (h->flags & HTML_NONOSPACE))
553: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 554: else
555: h->flags |= HTML_NOSPACE;
1.109 kristaps 556:
1.94 kristaps 557: /* Print out the tag name and attributes. */
558:
1.197 schwarze 559: print_byte(h, '<');
560: print_word(h, htmltags[tag].name);
1.194 schwarze 561:
562: va_start(ap, fmt);
563:
1.244 schwarze 564: while (*fmt != '\0' && *fmt != 's') {
1.203 schwarze 565:
1.238 schwarze 566: /* Parse attributes and arguments. */
1.203 schwarze 567:
568: arg1 = va_arg(ap, char *);
1.238 schwarze 569: arg2 = NULL;
1.194 schwarze 570: switch (*fmt++) {
571: case 'c':
1.195 schwarze 572: attr = "class";
1.194 schwarze 573: break;
574: case 'h':
1.195 schwarze 575: attr = "href";
1.194 schwarze 576: break;
577: case 'i':
1.195 schwarze 578: attr = "id";
1.194 schwarze 579: break;
580: case '?':
1.203 schwarze 581: attr = arg1;
582: arg1 = va_arg(ap, char *);
1.194 schwarze 583: break;
584: default:
585: abort();
586: }
1.203 schwarze 587: if (*fmt == 'M')
588: arg2 = va_arg(ap, char *);
589: if (arg1 == NULL)
590: continue;
591:
1.238 schwarze 592: /* Print the attributes. */
1.203 schwarze 593:
1.197 schwarze 594: print_byte(h, ' ');
595: print_word(h, attr);
596: print_byte(h, '=');
597: print_byte(h, '"');
1.195 schwarze 598: switch (*fmt) {
1.208 schwarze 599: case 'I':
600: print_href(h, arg1, NULL, 0);
601: fmt++;
602: break;
1.195 schwarze 603: case 'M':
1.203 schwarze 604: print_href(h, arg1, arg2, 1);
1.195 schwarze 605: fmt++;
606: break;
1.208 schwarze 607: case 'R':
608: print_byte(h, '#');
609: print_encode(h, arg1, NULL, 1);
1.195 schwarze 610: fmt++;
611: break;
1.208 schwarze 612: case 'T':
613: print_encode(h, arg1, NULL, 1);
614: print_word(h, "\" title=\"");
615: print_encode(h, arg1, NULL, 1);
1.195 schwarze 616: fmt++;
1.208 schwarze 617: break;
1.195 schwarze 618: default:
1.244 schwarze 619: print_encode(h, arg1, NULL, 1);
1.195 schwarze 620: break;
621: }
1.197 schwarze 622: print_byte(h, '"');
1.194 schwarze 623: }
1.244 schwarze 624:
625: style_written = 0;
626: while (*fmt++ == 's') {
627: arg1 = va_arg(ap, char *);
628: arg2 = va_arg(ap, char *);
629: if (arg2 == NULL)
630: continue;
631: print_byte(h, ' ');
632: if (style_written == 0) {
633: print_word(h, "style=\"");
634: style_written = 1;
635: }
636: print_word(h, arg1);
637: print_byte(h, ':');
638: print_byte(h, ' ');
639: print_word(h, arg2);
640: print_byte(h, ';');
641: }
642: if (style_written)
643: print_byte(h, '"');
644:
1.194 schwarze 645: va_end(ap);
1.94 kristaps 646:
1.172 kristaps 647: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 648:
1.93 kristaps 649: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 650: print_byte(h, '/');
1.93 kristaps 651:
1.197 schwarze 652: print_byte(h, '>');
1.14 kristaps 653:
1.196 schwarze 654: if (tflags & HTML_NLBEGIN)
1.197 schwarze 655: print_endline(h);
1.196 schwarze 656: else
657: h->flags |= HTML_NOSPACE;
1.117 kristaps 658:
1.196 schwarze 659: if (tflags & HTML_INDENT)
660: h->indent++;
661: if (tflags & HTML_NOINDENT)
662: h->noindent++;
1.117 kristaps 663:
1.188 schwarze 664: return t;
1.14 kristaps 665: }
666:
1.29 kristaps 667: static void
1.184 schwarze 668: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 669: {
1.196 schwarze 670: int tflags;
1.156 schwarze 671:
1.184 schwarze 672: /*
673: * Remember to close out and nullify the current
674: * meta-font and table, if applicable.
675: */
676: if (tag == h->metaf)
677: h->metaf = NULL;
678: if (tag == h->tblt)
679: h->tblt = NULL;
680:
1.196 schwarze 681: tflags = htmltags[tag->tag].flags;
682:
683: if (tflags & HTML_INDENT)
684: h->indent--;
685: if (tflags & HTML_NOINDENT)
686: h->noindent--;
687: if (tflags & HTML_NLEND)
1.197 schwarze 688: print_endline(h);
689: print_indent(h);
690: print_byte(h, '<');
691: print_byte(h, '/');
692: print_word(h, htmltags[tag->tag].name);
693: print_byte(h, '>');
1.196 schwarze 694: if (tflags & HTML_NLAFTER)
1.197 schwarze 695: print_endline(h);
1.184 schwarze 696:
1.204 schwarze 697: h->tag = tag->next;
1.184 schwarze 698: free(tag);
1.14 kristaps 699: }
700:
1.51 kristaps 701: void
1.93 kristaps 702: print_gen_decls(struct html *h)
1.1 kristaps 703: {
1.197 schwarze 704: print_word(h, "<!DOCTYPE html>");
705: print_endline(h);
1.221 schwarze 706: }
707:
708: void
709: print_gen_comment(struct html *h, struct roff_node *n)
710: {
711: int wantblank;
712:
713: print_word(h, "<!-- This is an automatically generated file."
714: " Do not edit.");
715: h->indent = 1;
716: wantblank = 0;
717: while (n != NULL && n->type == ROFFT_COMMENT) {
718: if (strstr(n->string, "-->") == NULL &&
719: (wantblank || *n->string != '\0')) {
720: print_endline(h);
721: print_indent(h);
722: print_word(h, n->string);
723: wantblank = *n->string != '\0';
724: }
725: n = n->next;
726: }
727: if (wantblank)
728: print_endline(h);
729: print_word(h, " -->");
730: print_endline(h);
731: h->indent = 0;
1.1 kristaps 732: }
733:
1.51 kristaps 734: void
1.104 kristaps 735: print_text(struct html *h, const char *word)
1.1 kristaps 736: {
1.197 schwarze 737: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 738: if ( ! (HTML_KEEP & h->flags)) {
739: if (HTML_PREKEEP & h->flags)
740: h->flags |= HTML_KEEP;
1.197 schwarze 741: print_endword(h);
1.105 kristaps 742: } else
1.216 schwarze 743: print_word(h, " ");
1.105 kristaps 744: }
1.30 kristaps 745:
1.122 kristaps 746: assert(NULL == h->metaf);
1.152 schwarze 747: switch (h->metac) {
1.156 schwarze 748: case HTMLFONT_ITALIC:
1.194 schwarze 749: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 750: break;
1.156 schwarze 751: case HTMLFONT_BOLD:
1.194 schwarze 752: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 753: break;
1.156 schwarze 754: case HTMLFONT_BI:
1.194 schwarze 755: h->metaf = print_otag(h, TAG_B, "");
756: print_otag(h, TAG_I, "");
1.242 schwarze 757: break;
758: case HTMLFONT_CW:
759: h->metaf = print_otag(h, TAG_SPAN, "c", "Li");
1.152 schwarze 760: break;
761: default:
1.197 schwarze 762: print_indent(h);
1.152 schwarze 763: break;
764: }
1.122 kristaps 765:
1.104 kristaps 766: assert(word);
1.195 schwarze 767: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 768: if ( ! (h->flags & HTML_NONOSPACE))
769: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 770: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 771: } else
1.183 schwarze 772: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 773:
774: if (h->metaf) {
775: print_tagq(h, h->metaf);
776: h->metaf = NULL;
777: }
1.113 schwarze 778:
779: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 780: }
1.30 kristaps 781:
1.51 kristaps 782: void
1.30 kristaps 783: print_tagq(struct html *h, const struct tag *until)
784: {
785: struct tag *tag;
786:
1.204 schwarze 787: while ((tag = h->tag) != NULL) {
1.184 schwarze 788: print_ctag(h, tag);
1.30 kristaps 789: if (until && tag == until)
790: return;
791: }
792: }
793:
1.51 kristaps 794: void
1.30 kristaps 795: print_stagq(struct html *h, const struct tag *suntil)
796: {
797: struct tag *tag;
798:
1.204 schwarze 799: while ((tag = h->tag) != NULL) {
1.30 kristaps 800: if (suntil && tag == suntil)
801: return;
1.184 schwarze 802: print_ctag(h, tag);
1.30 kristaps 803: }
804: }
1.171 kristaps 805:
806: void
807: print_paragraph(struct html *h)
808: {
809: struct tag *t;
810:
1.198 schwarze 811: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 812: print_tagq(h, t);
813: }
814:
1.197 schwarze 815:
816: /***********************************************************************
817: * Low level output functions.
818: * They implement line breaking using a short static buffer.
819: ***********************************************************************/
820:
821: /*
822: * Buffer one HTML output byte.
823: * If the buffer is full, flush and deactivate it and start a new line.
824: * If the buffer is inactive, print directly.
825: */
826: static void
827: print_byte(struct html *h, char c)
828: {
829: if ((h->flags & HTML_BUFFER) == 0) {
830: putchar(c);
831: h->col++;
832: return;
833: }
834:
835: if (h->col + h->bufcol < sizeof(h->buf)) {
836: h->buf[h->bufcol++] = c;
837: return;
838: }
839:
840: putchar('\n');
841: h->col = 0;
842: print_indent(h);
843: putchar(' ');
844: putchar(' ');
845: fwrite(h->buf, h->bufcol, 1, stdout);
846: putchar(c);
847: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
848: h->bufcol = 0;
849: h->flags &= ~HTML_BUFFER;
850: }
851:
1.196 schwarze 852: /*
853: * If something was printed on the current output line, end it.
1.197 schwarze 854: * Not to be called right after print_indent().
1.196 schwarze 855: */
1.202 schwarze 856: void
1.197 schwarze 857: print_endline(struct html *h)
1.196 schwarze 858: {
1.197 schwarze 859: if (h->col == 0)
1.196 schwarze 860: return;
861:
1.197 schwarze 862: if (h->bufcol) {
863: putchar(' ');
864: fwrite(h->buf, h->bufcol, 1, stdout);
865: h->bufcol = 0;
866: }
1.196 schwarze 867: putchar('\n');
1.197 schwarze 868: h->col = 0;
869: h->flags |= HTML_NOSPACE;
870: h->flags &= ~HTML_BUFFER;
871: }
872:
873: /*
874: * Flush the HTML output buffer.
875: * If it is inactive, activate it.
876: */
877: static void
878: print_endword(struct html *h)
879: {
880: if (h->noindent) {
881: print_byte(h, ' ');
882: return;
883: }
884:
885: if ((h->flags & HTML_BUFFER) == 0) {
886: h->col++;
887: h->flags |= HTML_BUFFER;
888: } else if (h->bufcol) {
889: putchar(' ');
890: fwrite(h->buf, h->bufcol, 1, stdout);
891: h->col += h->bufcol + 1;
892: }
893: h->bufcol = 0;
1.196 schwarze 894: }
895:
896: /*
897: * If at the beginning of a new output line,
898: * perform indentation and mark the line as containing output.
899: * Make sure to really produce some output right afterwards,
900: * but do not use print_otag() for producing it.
901: */
902: static void
1.197 schwarze 903: print_indent(struct html *h)
1.196 schwarze 904: {
1.197 schwarze 905: size_t i;
1.196 schwarze 906:
1.197 schwarze 907: if (h->col)
1.196 schwarze 908: return;
909:
1.197 schwarze 910: if (h->noindent == 0) {
911: h->col = h->indent * 2;
912: for (i = 0; i < h->col; i++)
1.196 schwarze 913: putchar(' ');
1.197 schwarze 914: }
915: h->flags &= ~HTML_NOSPACE;
916: }
917:
918: /*
919: * Print or buffer some characters
920: * depending on the current HTML output buffer state.
921: */
922: static void
923: print_word(struct html *h, const char *cp)
924: {
925: while (*cp != '\0')
926: print_byte(h, *cp++);
1.68 kristaps 927: }
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