Annotation of mandoc/html.c, Revision 1.199
1.199 ! schwarze 1: /* $Id: html.c,v 1.198 2017/01/19 15:27:34 schwarze Exp $ */
1.1 kristaps 2: /*
1.176 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.194 schwarze 4: * Copyright (c) 2011-2015, 2017 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>
1.29 kristaps 25: #include <stdio.h>
1.63 kristaps 26: #include <stdint.h>
1.1 kristaps 27: #include <stdlib.h>
1.33 kristaps 28: #include <string.h>
1.45 kristaps 29: #include <unistd.h>
1.1 kristaps 30:
1.100 kristaps 31: #include "mandoc.h"
1.155 schwarze 32: #include "mandoc_aux.h"
1.58 kristaps 33: #include "out.h"
1.51 kristaps 34: #include "html.h"
1.186 schwarze 35: #include "manconf.h"
1.64 kristaps 36: #include "main.h"
1.63 kristaps 37:
1.29 kristaps 38: struct htmldata {
1.63 kristaps 39: const char *name;
1.29 kristaps 40: int flags;
1.196 schwarze 41: #define HTML_NOSTACK (1 << 0)
42: #define HTML_AUTOCLOSE (1 << 1)
43: #define HTML_NLBEFORE (1 << 2)
44: #define HTML_NLBEGIN (1 << 3)
45: #define HTML_NLEND (1 << 4)
46: #define HTML_NLAFTER (1 << 5)
47: #define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER)
48: #define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND)
49: #define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE)
50: #define HTML_INDENT (1 << 6)
51: #define HTML_NOINDENT (1 << 7)
1.29 kristaps 52: };
1.7 kristaps 53:
1.29 kristaps 54: static const struct htmldata htmltags[TAG_MAX] = {
1.196 schwarze 55: {"html", HTML_NLALL},
56: {"head", HTML_NLALL | HTML_INDENT},
57: {"body", HTML_NLALL},
58: {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
59: {"title", HTML_NLAROUND},
60: {"div", HTML_NLAROUND},
61: {"h1", HTML_NLAROUND},
62: {"h2", HTML_NLAROUND},
63: {"span", 0},
64: {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
65: {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
66: {"a", 0},
67: {"table", HTML_NLALL | HTML_INDENT},
68: {"tbody", HTML_NLALL | HTML_INDENT},
69: {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
70: {"tr", HTML_NLALL | HTML_INDENT},
71: {"td", HTML_NLAROUND},
72: {"li", HTML_NLAROUND | HTML_INDENT},
73: {"ul", HTML_NLALL | HTML_INDENT},
74: {"ol", HTML_NLALL | HTML_INDENT},
75: {"dl", HTML_NLALL | HTML_INDENT},
76: {"dt", HTML_NLAROUND},
77: {"dd", HTML_NLAROUND | HTML_INDENT},
78: {"pre", HTML_NLALL | HTML_NOINDENT},
79: {"b", 0},
80: {"i", 0},
81: {"code", 0},
82: {"small", 0},
83: {"style", HTML_NLALL | HTML_INDENT},
84: {"math", HTML_NLALL | HTML_INDENT},
85: {"mrow", 0},
86: {"mi", 0},
87: {"mo", 0},
88: {"msup", 0},
89: {"msub", 0},
90: {"msubsup", 0},
91: {"mfrac", 0},
92: {"msqrt", 0},
93: {"mfenced", 0},
94: {"mtable", 0},
95: {"mtr", 0},
96: {"mtd", 0},
97: {"munderover", 0},
98: {"munder", 0},
99: {"mover", 0},
1.90 kristaps 100: };
101:
1.140 kristaps 102: static const char *const roffscales[SCALE_MAX] = {
103: "cm", /* SCALE_CM */
104: "in", /* SCALE_IN */
105: "pc", /* SCALE_PC */
106: "pt", /* SCALE_PT */
107: "em", /* SCALE_EM */
108: "em", /* SCALE_MM */
109: "ex", /* SCALE_EN */
110: "ex", /* SCALE_BU */
111: "em", /* SCALE_VS */
112: "ex", /* SCALE_FS */
113: };
114:
1.194 schwarze 115: static void a2width(const char *, struct roffsu *);
1.197 schwarze 116: static void print_byte(struct html *, char);
117: static void print_endline(struct html *);
118: static void print_endword(struct html *);
119: static void print_indent(struct html *);
120: static void print_word(struct html *, const char *);
121:
1.184 schwarze 122: static void print_ctag(struct html *, struct tag *);
1.197 schwarze 123: static int print_escape(struct html *, char);
1.195 schwarze 124: static int print_encode(struct html *, const char *, const char *, int);
125: static void print_href(struct html *, const char *, const char *, int);
1.141 kristaps 126: static void print_metaf(struct html *, enum mandoc_esc);
1.82 kristaps 127:
1.156 schwarze 128:
1.180 schwarze 129: void *
1.191 schwarze 130: html_alloc(const struct manoutput *outopts)
1.10 kristaps 131: {
1.30 kristaps 132: struct html *h;
133:
1.128 kristaps 134: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 135:
1.66 kristaps 136: h->tags.head = NULL;
1.186 schwarze 137: h->style = outopts->style;
138: h->base_man = outopts->man;
139: h->base_includes = outopts->includes;
140: if (outopts->fragment)
141: h->oflags |= HTML_FRAGMENT;
1.43 kristaps 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;
151:
152: h = (struct html *)p;
1.37 kristaps 153:
1.66 kristaps 154: while ((tag = h->tags.head) != NULL) {
1.156 schwarze 155: h->tags.head = tag->next;
1.30 kristaps 156: free(tag);
157: }
1.53 kristaps 158:
1.30 kristaps 159: free(h);
1.10 kristaps 160: }
1.2 kristaps 161:
1.51 kristaps 162: void
1.29 kristaps 163: print_gen_head(struct html *h)
164: {
1.165 kristaps 165: struct tag *t;
1.41 kristaps 166:
1.194 schwarze 167: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.165 kristaps 168:
1.168 kristaps 169: /*
170: * Print a default style-sheet.
171: */
1.196 schwarze 172:
1.194 schwarze 173: t = print_otag(h, TAG_STYLE, "");
1.196 schwarze 174: print_text(h, "table.head, table.foot { width: 100%; }");
1.197 schwarze 175: print_endline(h);
1.196 schwarze 176: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197 schwarze 177: print_endline(h);
1.196 schwarze 178: print_text(h, "td.head-vol { text-align: center; }");
1.197 schwarze 179: print_endline(h);
1.196 schwarze 180: print_text(h, "table.foot td { width: 50%; }");
1.197 schwarze 181: print_endline(h);
1.196 schwarze 182: print_text(h, "table.head td { width: 33%; }");
1.197 schwarze 183: print_endline(h);
1.198 schwarze 184: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.165 kristaps 185: print_tagq(h, t);
1.41 kristaps 186:
1.194 schwarze 187: if (h->style)
188: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
189: h->style, "type", "text/css", "media", "all");
1.4 kristaps 190: }
191:
1.126 schwarze 192: static void
1.132 kristaps 193: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 194: {
1.90 kristaps 195: enum htmlfont font;
1.88 kristaps 196:
197: switch (deco) {
1.156 schwarze 198: case ESCAPE_FONTPREV:
1.90 kristaps 199: font = h->metal;
1.88 kristaps 200: break;
1.156 schwarze 201: case ESCAPE_FONTITALIC:
1.90 kristaps 202: font = HTMLFONT_ITALIC;
203: break;
1.156 schwarze 204: case ESCAPE_FONTBOLD:
1.90 kristaps 205: font = HTMLFONT_BOLD;
1.88 kristaps 206: break;
1.156 schwarze 207: case ESCAPE_FONTBI:
1.152 schwarze 208: font = HTMLFONT_BI;
209: break;
1.156 schwarze 210: case ESCAPE_FONT:
211: case ESCAPE_FONTROMAN:
1.90 kristaps 212: font = HTMLFONT_NONE;
1.88 kristaps 213: break;
214: default:
215: abort();
216: }
217:
1.122 kristaps 218: if (h->metaf) {
219: print_tagq(h, h->metaf);
220: h->metaf = NULL;
221: }
222:
223: h->metal = h->metac;
224: h->metac = font;
225:
1.152 schwarze 226: switch (font) {
1.156 schwarze 227: case HTMLFONT_ITALIC:
1.194 schwarze 228: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 229: break;
1.156 schwarze 230: case HTMLFONT_BOLD:
1.194 schwarze 231: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 232: break;
1.156 schwarze 233: case HTMLFONT_BI:
1.194 schwarze 234: h->metaf = print_otag(h, TAG_B, "");
235: print_otag(h, TAG_I, "");
1.152 schwarze 236: break;
237: default:
238: break;
239: }
1.88 kristaps 240: }
241:
1.138 kristaps 242: int
243: html_strlen(const char *cp)
244: {
1.151 schwarze 245: size_t rsz;
246: int skip, sz;
1.138 kristaps 247:
248: /*
249: * Account for escaped sequences within string length
250: * calculations. This follows the logic in term_strlen() as we
251: * must calculate the width of produced strings.
252: * Assume that characters are always width of "1". This is
253: * hacky, but it gets the job done for approximation of widths.
254: */
255:
256: sz = 0;
1.151 schwarze 257: skip = 0;
258: while (1) {
259: rsz = strcspn(cp, "\\");
260: if (rsz) {
261: cp += rsz;
262: if (skip) {
263: skip = 0;
264: rsz--;
265: }
266: sz += rsz;
267: }
268: if ('\0' == *cp)
269: break;
270: cp++;
271: switch (mandoc_escape(&cp, NULL, NULL)) {
1.156 schwarze 272: case ESCAPE_ERROR:
1.188 schwarze 273: return sz;
1.156 schwarze 274: case ESCAPE_UNICODE:
275: case ESCAPE_NUMBERED:
276: case ESCAPE_SPECIAL:
1.185 schwarze 277: case ESCAPE_OVERSTRIKE:
1.151 schwarze 278: if (skip)
279: skip = 0;
280: else
281: sz++;
282: break;
1.156 schwarze 283: case ESCAPE_SKIPCHAR:
1.151 schwarze 284: skip = 1;
1.138 kristaps 285: break;
286: default:
287: break;
288: }
289: }
1.188 schwarze 290: return sz;
1.138 kristaps 291: }
1.88 kristaps 292:
1.85 kristaps 293: static int
1.197 schwarze 294: print_escape(struct html *h, char c)
1.159 schwarze 295: {
296:
297: switch (c) {
298: case '<':
1.197 schwarze 299: print_word(h, "<");
1.159 schwarze 300: break;
301: case '>':
1.197 schwarze 302: print_word(h, ">");
1.159 schwarze 303: break;
304: case '&':
1.197 schwarze 305: print_word(h, "&");
1.159 schwarze 306: break;
307: case '"':
1.197 schwarze 308: print_word(h, """);
1.159 schwarze 309: break;
310: case ASCII_NBRSP:
1.197 schwarze 311: print_word(h, " ");
1.159 schwarze 312: break;
313: case ASCII_HYPH:
1.197 schwarze 314: print_byte(h, '-');
1.189 schwarze 315: break;
1.159 schwarze 316: case ASCII_BREAK:
317: break;
318: default:
1.188 schwarze 319: return 0;
1.159 schwarze 320: }
1.188 schwarze 321: return 1;
1.159 schwarze 322: }
323:
324: static int
1.195 schwarze 325: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 326: {
1.197 schwarze 327: char numbuf[16];
1.77 kristaps 328: size_t sz;
1.141 kristaps 329: int c, len, nospace;
1.82 kristaps 330: const char *seq;
1.132 kristaps 331: enum mandoc_esc esc;
1.158 schwarze 332: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.154 schwarze 333: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14 kristaps 334:
1.195 schwarze 335: if (pend == NULL)
336: pend = strchr(p, '\0');
337:
1.85 kristaps 338: nospace = 0;
339:
1.195 schwarze 340: while (p < pend) {
1.151 schwarze 341: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
342: h->flags &= ~HTML_SKIPCHAR;
343: p++;
344: continue;
345: }
346:
1.197 schwarze 347: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
348: if (*p == ' ')
349: print_endword(h);
350: else
351: print_byte(h, *p);
1.77 kristaps 352:
1.195 schwarze 353: if (p >= pend)
1.132 kristaps 354: break;
355:
1.197 schwarze 356: if (print_escape(h, *p++))
1.154 schwarze 357: continue;
1.77 kristaps 358:
1.132 kristaps 359: esc = mandoc_escape(&p, &seq, &len);
360: if (ESCAPE_ERROR == esc)
361: break;
1.82 kristaps 362:
1.132 kristaps 363: switch (esc) {
1.156 schwarze 364: case ESCAPE_FONT:
365: case ESCAPE_FONTPREV:
366: case ESCAPE_FONTBOLD:
367: case ESCAPE_FONTITALIC:
368: case ESCAPE_FONTBI:
369: case ESCAPE_FONTROMAN:
1.151 schwarze 370: if (0 == norecurse)
371: print_metaf(h, esc);
372: continue;
1.156 schwarze 373: case ESCAPE_SKIPCHAR:
1.151 schwarze 374: h->flags |= HTML_SKIPCHAR;
375: continue;
376: default:
377: break;
378: }
379:
380: if (h->flags & HTML_SKIPCHAR) {
381: h->flags &= ~HTML_SKIPCHAR;
382: continue;
383: }
384:
385: switch (esc) {
1.156 schwarze 386: case ESCAPE_UNICODE:
1.159 schwarze 387: /* Skip past "u" header. */
1.144 kristaps 388: c = mchars_num2uc(seq + 1, len - 1);
389: break;
1.156 schwarze 390: case ESCAPE_NUMBERED:
1.141 kristaps 391: c = mchars_num2char(seq, len);
1.181 schwarze 392: if (c < 0)
393: continue;
1.82 kristaps 394: break;
1.156 schwarze 395: case ESCAPE_SPECIAL:
1.191 schwarze 396: c = mchars_spec2cp(seq, len);
1.181 schwarze 397: if (c <= 0)
398: continue;
1.132 kristaps 399: break;
1.156 schwarze 400: case ESCAPE_NOSPACE:
1.132 kristaps 401: if ('\0' == *p)
402: nospace = 1;
1.179 schwarze 403: continue;
1.185 schwarze 404: case ESCAPE_OVERSTRIKE:
405: if (len == 0)
406: continue;
407: c = seq[len - 1];
408: break;
1.82 kristaps 409: default:
1.179 schwarze 410: continue;
1.82 kristaps 411: }
1.181 schwarze 412: if ((c < 0x20 && c != 0x09) ||
413: (c > 0x7E && c < 0xA0))
1.179 schwarze 414: c = 0xFFFD;
1.197 schwarze 415: if (c > 0x7E) {
416: (void)snprintf(numbuf, sizeof(numbuf), "&#%d;", c);
417: print_word(h, numbuf);
418: } else if (print_escape(h, c) == 0)
419: print_byte(h, c);
1.32 kristaps 420: }
1.85 kristaps 421:
1.188 schwarze 422: return nospace;
1.14 kristaps 423: }
424:
1.94 kristaps 425: static void
1.195 schwarze 426: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 427: {
1.195 schwarze 428: const char *p, *pp;
429:
430: pp = man ? h->base_man : h->base_includes;
431: while ((p = strchr(pp, '%')) != NULL) {
432: print_encode(h, pp, p, 1);
433: if (man && p[1] == 'S') {
434: if (sec == NULL)
1.197 schwarze 435: print_byte(h, '1');
1.195 schwarze 436: else
437: print_encode(h, sec, NULL, 1);
438: } else if ((man && p[1] == 'N') ||
439: (man == 0 && p[1] == 'I'))
440: print_encode(h, name, NULL, 1);
441: else
442: print_encode(h, p, p + 2, 1);
443: pp = p + 2;
444: }
445: if (*pp != '\0')
446: print_encode(h, pp, NULL, 1);
1.94 kristaps 447: }
448:
1.51 kristaps 449: struct tag *
1.194 schwarze 450: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 451: {
1.194 schwarze 452: va_list ap;
453: struct roffsu mysu, *su;
1.197 schwarze 454: char numbuf[16];
1.30 kristaps 455: struct tag *t;
1.195 schwarze 456: const char *attr;
1.194 schwarze 457: char *s;
1.195 schwarze 458: double v;
1.196 schwarze 459: int i, have_style, tflags;
460:
461: tflags = htmltags[tag].flags;
1.30 kristaps 462:
1.94 kristaps 463: /* Push this tags onto the stack of open scopes. */
464:
1.196 schwarze 465: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 466: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 467: t->tag = tag;
1.66 kristaps 468: t->next = h->tags.head;
469: h->tags.head = t;
1.30 kristaps 470: } else
471: t = NULL;
1.29 kristaps 472:
1.196 schwarze 473: if (tflags & HTML_NLBEFORE)
1.197 schwarze 474: print_endline(h);
475: if (h->col == 0)
476: print_indent(h);
1.196 schwarze 477: else if ((h->flags & HTML_NOSPACE) == 0) {
478: if (h->flags & HTML_KEEP)
1.197 schwarze 479: print_word(h, " ");
1.196 schwarze 480: else {
481: if (h->flags & HTML_PREKEEP)
482: h->flags |= HTML_KEEP;
1.197 schwarze 483: print_endword(h);
1.105 kristaps 484: }
1.196 schwarze 485: }
1.29 kristaps 486:
1.109 kristaps 487: if ( ! (h->flags & HTML_NONOSPACE))
488: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 489: else
490: h->flags |= HTML_NOSPACE;
1.109 kristaps 491:
1.94 kristaps 492: /* Print out the tag name and attributes. */
493:
1.197 schwarze 494: print_byte(h, '<');
495: print_word(h, htmltags[tag].name);
1.194 schwarze 496:
497: va_start(ap, fmt);
498:
499: have_style = 0;
500: while (*fmt != '\0') {
501: if (*fmt == 's') {
1.197 schwarze 502: print_word(h, " style=\"");
1.194 schwarze 503: have_style = 1;
504: fmt++;
505: break;
506: }
507: s = va_arg(ap, char *);
508: switch (*fmt++) {
509: case 'c':
1.195 schwarze 510: attr = "class";
1.194 schwarze 511: break;
512: case 'h':
1.195 schwarze 513: attr = "href";
1.194 schwarze 514: break;
515: case 'i':
1.195 schwarze 516: attr = "id";
1.194 schwarze 517: break;
518: case '?':
1.195 schwarze 519: attr = s;
520: s = va_arg(ap, char *);
1.194 schwarze 521: break;
522: default:
523: abort();
524: }
1.197 schwarze 525: print_byte(h, ' ');
526: print_word(h, attr);
527: print_byte(h, '=');
528: print_byte(h, '"');
1.195 schwarze 529: switch (*fmt) {
530: case 'M':
531: print_href(h, s, va_arg(ap, char *), 1);
532: fmt++;
533: break;
534: case 'I':
535: print_href(h, s, NULL, 0);
536: fmt++;
537: break;
538: case 'R':
1.197 schwarze 539: print_byte(h, '#');
1.195 schwarze 540: fmt++;
541: /* FALLTHROUGH */
542: default:
543: print_encode(h, s, NULL, 1);
544: break;
545: }
1.197 schwarze 546: print_byte(h, '"');
1.194 schwarze 547: }
548:
549: /* Print out styles. */
550:
551: s = NULL;
552: su = &mysu;
553: while (*fmt != '\0') {
554:
555: /* First letter: input argument type. */
556:
557: switch (*fmt++) {
558: case 'h':
559: i = va_arg(ap, int);
560: SCALE_HS_INIT(su, i);
561: break;
562: case 's':
563: s = va_arg(ap, char *);
564: break;
565: case 'u':
566: su = va_arg(ap, struct roffsu *);
567: break;
568: case 'v':
569: i = va_arg(ap, int);
570: SCALE_VS_INIT(su, i);
571: break;
572: case 'w':
573: s = va_arg(ap, char *);
574: a2width(s, su);
575: break;
576: default:
577: abort();
578: }
579:
580: /* Second letter: style name. */
581:
582: switch (*fmt++) {
583: case 'b':
1.195 schwarze 584: attr = "margin-bottom";
1.194 schwarze 585: break;
586: case 'h':
1.195 schwarze 587: attr = "height";
1.194 schwarze 588: break;
589: case 'i':
1.195 schwarze 590: attr = "text-indent";
1.194 schwarze 591: break;
592: case 'l':
1.195 schwarze 593: attr = "margin-left";
1.194 schwarze 594: break;
595: case 't':
1.195 schwarze 596: attr = "margin-top";
1.194 schwarze 597: break;
598: case 'w':
1.195 schwarze 599: attr = "width";
1.194 schwarze 600: break;
601: case 'W':
1.195 schwarze 602: attr = "min-width";
1.194 schwarze 603: break;
604: case '?':
1.197 schwarze 605: print_word(h, s);
606: print_byte(h, ':');
607: print_byte(h, ' ');
608: print_word(h, va_arg(ap, char *));
609: print_byte(h, ';');
610: if (*fmt != '\0')
611: print_byte(h, ' ');
1.195 schwarze 612: continue;
1.194 schwarze 613: default:
614: abort();
615: }
1.195 schwarze 616: v = su->scale;
617: if (su->unit == SCALE_MM && (v /= 100.0) == 0.0)
618: v = 1.0;
619: else if (su->unit == SCALE_BU)
620: v /= 24.0;
1.197 schwarze 621: print_word(h, attr);
622: print_byte(h, ':');
623: print_byte(h, ' ');
624: (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v);
625: print_word(h, numbuf);
626: print_word(h, roffscales[su->unit]);
627: print_byte(h, ';');
628: if (*fmt != '\0')
629: print_byte(h, ' ');
1.194 schwarze 630: }
631: if (have_style)
1.197 schwarze 632: print_byte(h, '"');
1.194 schwarze 633:
634: va_end(ap);
1.94 kristaps 635:
1.172 kristaps 636: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 637:
1.93 kristaps 638: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 639: print_byte(h, '/');
1.93 kristaps 640:
1.197 schwarze 641: print_byte(h, '>');
1.14 kristaps 642:
1.196 schwarze 643: if (tflags & HTML_NLBEGIN)
1.197 schwarze 644: print_endline(h);
1.196 schwarze 645: else
646: h->flags |= HTML_NOSPACE;
1.117 kristaps 647:
1.196 schwarze 648: if (tflags & HTML_INDENT)
649: h->indent++;
650: if (tflags & HTML_NOINDENT)
651: h->noindent++;
1.117 kristaps 652:
1.188 schwarze 653: return t;
1.14 kristaps 654: }
655:
1.29 kristaps 656: static void
1.184 schwarze 657: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 658: {
1.196 schwarze 659: int tflags;
1.156 schwarze 660:
1.184 schwarze 661: /*
662: * Remember to close out and nullify the current
663: * meta-font and table, if applicable.
664: */
665: if (tag == h->metaf)
666: h->metaf = NULL;
667: if (tag == h->tblt)
668: h->tblt = NULL;
669:
1.196 schwarze 670: tflags = htmltags[tag->tag].flags;
671:
672: if (tflags & HTML_INDENT)
673: h->indent--;
674: if (tflags & HTML_NOINDENT)
675: h->noindent--;
676: if (tflags & HTML_NLEND)
1.197 schwarze 677: print_endline(h);
678: print_indent(h);
679: print_byte(h, '<');
680: print_byte(h, '/');
681: print_word(h, htmltags[tag->tag].name);
682: print_byte(h, '>');
1.196 schwarze 683: if (tflags & HTML_NLAFTER)
1.197 schwarze 684: print_endline(h);
1.184 schwarze 685:
686: h->tags.head = tag->next;
687: free(tag);
1.14 kristaps 688: }
689:
1.51 kristaps 690: void
1.93 kristaps 691: print_gen_decls(struct html *h)
1.1 kristaps 692: {
1.197 schwarze 693: print_word(h, "<!DOCTYPE html>");
694: print_endline(h);
1.1 kristaps 695: }
696:
1.51 kristaps 697: void
1.104 kristaps 698: print_text(struct html *h, const char *word)
1.1 kristaps 699: {
1.197 schwarze 700: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 701: if ( ! (HTML_KEEP & h->flags)) {
702: if (HTML_PREKEEP & h->flags)
703: h->flags |= HTML_KEEP;
1.197 schwarze 704: print_endword(h);
1.105 kristaps 705: } else
1.197 schwarze 706: print_word(h, " ");
1.105 kristaps 707: }
1.30 kristaps 708:
1.122 kristaps 709: assert(NULL == h->metaf);
1.152 schwarze 710: switch (h->metac) {
1.156 schwarze 711: case HTMLFONT_ITALIC:
1.194 schwarze 712: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 713: break;
1.156 schwarze 714: case HTMLFONT_BOLD:
1.194 schwarze 715: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 716: break;
1.156 schwarze 717: case HTMLFONT_BI:
1.194 schwarze 718: h->metaf = print_otag(h, TAG_B, "");
719: print_otag(h, TAG_I, "");
1.152 schwarze 720: break;
721: default:
1.197 schwarze 722: print_indent(h);
1.152 schwarze 723: break;
724: }
1.122 kristaps 725:
1.104 kristaps 726: assert(word);
1.195 schwarze 727: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 728: if ( ! (h->flags & HTML_NONOSPACE))
729: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 730: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 731: } else
1.183 schwarze 732: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 733:
734: if (h->metaf) {
735: print_tagq(h, h->metaf);
736: h->metaf = NULL;
737: }
1.113 schwarze 738:
739: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 740: }
1.30 kristaps 741:
1.51 kristaps 742: void
1.30 kristaps 743: print_tagq(struct html *h, const struct tag *until)
744: {
745: struct tag *tag;
746:
1.66 kristaps 747: while ((tag = h->tags.head) != NULL) {
1.184 schwarze 748: print_ctag(h, tag);
1.30 kristaps 749: if (until && tag == until)
750: return;
751: }
752: }
753:
1.51 kristaps 754: void
1.30 kristaps 755: print_stagq(struct html *h, const struct tag *suntil)
756: {
757: struct tag *tag;
758:
1.66 kristaps 759: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 760: if (suntil && tag == suntil)
761: return;
1.184 schwarze 762: print_ctag(h, tag);
1.30 kristaps 763: }
764: }
1.171 kristaps 765:
766: void
767: print_paragraph(struct html *h)
768: {
769: struct tag *t;
770:
1.198 schwarze 771: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 772: print_tagq(h, t);
773: }
774:
1.197 schwarze 775:
776: /***********************************************************************
777: * Low level output functions.
778: * They implement line breaking using a short static buffer.
779: ***********************************************************************/
780:
781: /*
782: * Buffer one HTML output byte.
783: * If the buffer is full, flush and deactivate it and start a new line.
784: * If the buffer is inactive, print directly.
785: */
786: static void
787: print_byte(struct html *h, char c)
788: {
789: if ((h->flags & HTML_BUFFER) == 0) {
790: putchar(c);
791: h->col++;
792: return;
793: }
794:
795: if (h->col + h->bufcol < sizeof(h->buf)) {
796: h->buf[h->bufcol++] = c;
797: return;
798: }
799:
800: putchar('\n');
801: h->col = 0;
802: print_indent(h);
803: putchar(' ');
804: putchar(' ');
805: fwrite(h->buf, h->bufcol, 1, stdout);
806: putchar(c);
807: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
808: h->bufcol = 0;
809: h->flags &= ~HTML_BUFFER;
810: }
811:
1.196 schwarze 812: /*
813: * If something was printed on the current output line, end it.
1.197 schwarze 814: * Not to be called right after print_indent().
1.196 schwarze 815: */
816: static void
1.197 schwarze 817: print_endline(struct html *h)
1.196 schwarze 818: {
1.197 schwarze 819: if (h->col == 0)
1.196 schwarze 820: return;
821:
1.197 schwarze 822: if (h->bufcol) {
823: putchar(' ');
824: fwrite(h->buf, h->bufcol, 1, stdout);
825: h->bufcol = 0;
826: }
1.196 schwarze 827: putchar('\n');
1.197 schwarze 828: h->col = 0;
829: h->flags |= HTML_NOSPACE;
830: h->flags &= ~HTML_BUFFER;
831: }
832:
833: /*
834: * Flush the HTML output buffer.
835: * If it is inactive, activate it.
836: */
837: static void
838: print_endword(struct html *h)
839: {
840: if (h->noindent) {
841: print_byte(h, ' ');
842: return;
843: }
844:
845: if ((h->flags & HTML_BUFFER) == 0) {
846: h->col++;
847: h->flags |= HTML_BUFFER;
848: } else if (h->bufcol) {
849: putchar(' ');
850: fwrite(h->buf, h->bufcol, 1, stdout);
851: h->col += h->bufcol + 1;
852: }
853: h->bufcol = 0;
1.196 schwarze 854: }
855:
856: /*
857: * If at the beginning of a new output line,
858: * perform indentation and mark the line as containing output.
859: * Make sure to really produce some output right afterwards,
860: * but do not use print_otag() for producing it.
861: */
862: static void
1.197 schwarze 863: print_indent(struct html *h)
1.196 schwarze 864: {
1.197 schwarze 865: size_t i;
1.196 schwarze 866:
1.197 schwarze 867: if (h->col)
1.196 schwarze 868: return;
869:
1.197 schwarze 870: if (h->noindent == 0) {
871: h->col = h->indent * 2;
872: for (i = 0; i < h->col; i++)
1.196 schwarze 873: putchar(' ');
1.197 schwarze 874: }
875: h->flags &= ~HTML_NOSPACE;
876: }
877:
878: /*
879: * Print or buffer some characters
880: * depending on the current HTML output buffer state.
881: */
882: static void
883: print_word(struct html *h, const char *cp)
884: {
885: while (*cp != '\0')
886: print_byte(h, *cp++);
1.196 schwarze 887: }
1.194 schwarze 888:
889: /*
890: * Calculate the scaling unit passed in a `-width' argument. This uses
891: * either a native scaling unit (e.g., 1i, 2m) or the string length of
892: * the value.
893: */
894: static void
895: a2width(const char *p, struct roffsu *su)
896: {
897: if (a2roffsu(p, su, SCALE_MAX) < 2) {
898: su->unit = SCALE_EN;
899: su->scale = html_strlen(p);
900: } else if (su->scale < 0.0)
901: su->scale = 0.0;
1.68 kristaps 902: }
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