Annotation of mandoc/html.c, Revision 1.198
1.198 ! schwarze 1: /* $Id: html.c,v 1.197 2017/01/19 01:00:14 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: {"blockquote", HTML_NLALL | HTML_INDENT},
79: {"pre", HTML_NLALL | HTML_NOINDENT},
80: {"b", 0},
81: {"i", 0},
82: {"code", 0},
83: {"small", 0},
84: {"style", HTML_NLALL | HTML_INDENT},
85: {"math", HTML_NLALL | HTML_INDENT},
86: {"mrow", 0},
87: {"mi", 0},
88: {"mo", 0},
89: {"msup", 0},
90: {"msub", 0},
91: {"msubsup", 0},
92: {"mfrac", 0},
93: {"msqrt", 0},
94: {"mfenced", 0},
95: {"mtable", 0},
96: {"mtr", 0},
97: {"mtd", 0},
98: {"munderover", 0},
99: {"munder", 0},
100: {"mover", 0},
1.90 kristaps 101: };
102:
1.140 kristaps 103: static const char *const roffscales[SCALE_MAX] = {
104: "cm", /* SCALE_CM */
105: "in", /* SCALE_IN */
106: "pc", /* SCALE_PC */
107: "pt", /* SCALE_PT */
108: "em", /* SCALE_EM */
109: "em", /* SCALE_MM */
110: "ex", /* SCALE_EN */
111: "ex", /* SCALE_BU */
112: "em", /* SCALE_VS */
113: "ex", /* SCALE_FS */
114: };
115:
1.194 schwarze 116: static void a2width(const char *, struct roffsu *);
1.197 schwarze 117: static void print_byte(struct html *, char);
118: static void print_endline(struct html *);
119: static void print_endword(struct html *);
120: static void print_indent(struct html *);
121: static void print_word(struct html *, const char *);
122:
1.184 schwarze 123: static void print_ctag(struct html *, struct tag *);
1.197 schwarze 124: static int print_escape(struct html *, char);
1.195 schwarze 125: static int print_encode(struct html *, const char *, const char *, int);
126: static void print_href(struct html *, const char *, const char *, int);
1.141 kristaps 127: static void print_metaf(struct html *, enum mandoc_esc);
1.82 kristaps 128:
1.156 schwarze 129:
1.180 schwarze 130: void *
1.191 schwarze 131: html_alloc(const struct manoutput *outopts)
1.10 kristaps 132: {
1.30 kristaps 133: struct html *h;
134:
1.128 kristaps 135: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 136:
1.66 kristaps 137: h->tags.head = NULL;
1.186 schwarze 138: h->style = outopts->style;
139: h->base_man = outopts->man;
140: h->base_includes = outopts->includes;
141: if (outopts->fragment)
142: h->oflags |= HTML_FRAGMENT;
1.43 kristaps 143:
1.188 schwarze 144: return h;
1.29 kristaps 145: }
1.10 kristaps 146:
1.29 kristaps 147: void
148: html_free(void *p)
149: {
1.30 kristaps 150: struct tag *tag;
151: struct html *h;
152:
153: h = (struct html *)p;
1.37 kristaps 154:
1.66 kristaps 155: while ((tag = h->tags.head) != NULL) {
1.156 schwarze 156: h->tags.head = tag->next;
1.30 kristaps 157: free(tag);
158: }
1.53 kristaps 159:
1.30 kristaps 160: free(h);
1.10 kristaps 161: }
1.2 kristaps 162:
1.51 kristaps 163: void
1.29 kristaps 164: print_gen_head(struct html *h)
165: {
1.165 kristaps 166: struct tag *t;
1.41 kristaps 167:
1.194 schwarze 168: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.165 kristaps 169:
1.168 kristaps 170: /*
171: * Print a default style-sheet.
172: */
1.196 schwarze 173:
1.194 schwarze 174: t = print_otag(h, TAG_STYLE, "");
1.196 schwarze 175: print_text(h, "table.head, table.foot { width: 100%; }");
1.197 schwarze 176: print_endline(h);
1.196 schwarze 177: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197 schwarze 178: print_endline(h);
1.196 schwarze 179: print_text(h, "td.head-vol { text-align: center; }");
1.197 schwarze 180: print_endline(h);
1.196 schwarze 181: print_text(h, "table.foot td { width: 50%; }");
1.197 schwarze 182: print_endline(h);
1.196 schwarze 183: print_text(h, "table.head td { width: 33%; }");
1.197 schwarze 184: print_endline(h);
1.198 ! schwarze 185: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.165 kristaps 186: print_tagq(h, t);
1.41 kristaps 187:
1.194 schwarze 188: if (h->style)
189: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
190: h->style, "type", "text/css", "media", "all");
1.4 kristaps 191: }
192:
1.126 schwarze 193: static void
1.132 kristaps 194: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 195: {
1.90 kristaps 196: enum htmlfont font;
1.88 kristaps 197:
198: switch (deco) {
1.156 schwarze 199: case ESCAPE_FONTPREV:
1.90 kristaps 200: font = h->metal;
1.88 kristaps 201: break;
1.156 schwarze 202: case ESCAPE_FONTITALIC:
1.90 kristaps 203: font = HTMLFONT_ITALIC;
204: break;
1.156 schwarze 205: case ESCAPE_FONTBOLD:
1.90 kristaps 206: font = HTMLFONT_BOLD;
1.88 kristaps 207: break;
1.156 schwarze 208: case ESCAPE_FONTBI:
1.152 schwarze 209: font = HTMLFONT_BI;
210: break;
1.156 schwarze 211: case ESCAPE_FONT:
212: case ESCAPE_FONTROMAN:
1.90 kristaps 213: font = HTMLFONT_NONE;
1.88 kristaps 214: break;
215: default:
216: abort();
217: }
218:
1.122 kristaps 219: if (h->metaf) {
220: print_tagq(h, h->metaf);
221: h->metaf = NULL;
222: }
223:
224: h->metal = h->metac;
225: h->metac = font;
226:
1.152 schwarze 227: switch (font) {
1.156 schwarze 228: case HTMLFONT_ITALIC:
1.194 schwarze 229: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 230: break;
1.156 schwarze 231: case HTMLFONT_BOLD:
1.194 schwarze 232: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 233: break;
1.156 schwarze 234: case HTMLFONT_BI:
1.194 schwarze 235: h->metaf = print_otag(h, TAG_B, "");
236: print_otag(h, TAG_I, "");
1.152 schwarze 237: break;
238: default:
239: break;
240: }
1.88 kristaps 241: }
242:
1.138 kristaps 243: int
244: html_strlen(const char *cp)
245: {
1.151 schwarze 246: size_t rsz;
247: int skip, sz;
1.138 kristaps 248:
249: /*
250: * Account for escaped sequences within string length
251: * calculations. This follows the logic in term_strlen() as we
252: * must calculate the width of produced strings.
253: * Assume that characters are always width of "1". This is
254: * hacky, but it gets the job done for approximation of widths.
255: */
256:
257: sz = 0;
1.151 schwarze 258: skip = 0;
259: while (1) {
260: rsz = strcspn(cp, "\\");
261: if (rsz) {
262: cp += rsz;
263: if (skip) {
264: skip = 0;
265: rsz--;
266: }
267: sz += rsz;
268: }
269: if ('\0' == *cp)
270: break;
271: cp++;
272: switch (mandoc_escape(&cp, NULL, NULL)) {
1.156 schwarze 273: case ESCAPE_ERROR:
1.188 schwarze 274: return sz;
1.156 schwarze 275: case ESCAPE_UNICODE:
276: case ESCAPE_NUMBERED:
277: case ESCAPE_SPECIAL:
1.185 schwarze 278: case ESCAPE_OVERSTRIKE:
1.151 schwarze 279: if (skip)
280: skip = 0;
281: else
282: sz++;
283: break;
1.156 schwarze 284: case ESCAPE_SKIPCHAR:
1.151 schwarze 285: skip = 1;
1.138 kristaps 286: break;
287: default:
288: break;
289: }
290: }
1.188 schwarze 291: return sz;
1.138 kristaps 292: }
1.88 kristaps 293:
1.85 kristaps 294: static int
1.197 schwarze 295: print_escape(struct html *h, char c)
1.159 schwarze 296: {
297:
298: switch (c) {
299: case '<':
1.197 schwarze 300: print_word(h, "<");
1.159 schwarze 301: break;
302: case '>':
1.197 schwarze 303: print_word(h, ">");
1.159 schwarze 304: break;
305: case '&':
1.197 schwarze 306: print_word(h, "&");
1.159 schwarze 307: break;
308: case '"':
1.197 schwarze 309: print_word(h, """);
1.159 schwarze 310: break;
311: case ASCII_NBRSP:
1.197 schwarze 312: print_word(h, " ");
1.159 schwarze 313: break;
314: case ASCII_HYPH:
1.197 schwarze 315: print_byte(h, '-');
1.189 schwarze 316: break;
1.159 schwarze 317: case ASCII_BREAK:
318: break;
319: default:
1.188 schwarze 320: return 0;
1.159 schwarze 321: }
1.188 schwarze 322: return 1;
1.159 schwarze 323: }
324:
325: static int
1.195 schwarze 326: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 327: {
1.197 schwarze 328: char numbuf[16];
1.77 kristaps 329: size_t sz;
1.141 kristaps 330: int c, len, nospace;
1.82 kristaps 331: const char *seq;
1.132 kristaps 332: enum mandoc_esc esc;
1.158 schwarze 333: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.154 schwarze 334: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14 kristaps 335:
1.195 schwarze 336: if (pend == NULL)
337: pend = strchr(p, '\0');
338:
1.85 kristaps 339: nospace = 0;
340:
1.195 schwarze 341: while (p < pend) {
1.151 schwarze 342: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
343: h->flags &= ~HTML_SKIPCHAR;
344: p++;
345: continue;
346: }
347:
1.197 schwarze 348: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
349: if (*p == ' ')
350: print_endword(h);
351: else
352: print_byte(h, *p);
1.77 kristaps 353:
1.195 schwarze 354: if (p >= pend)
1.132 kristaps 355: break;
356:
1.197 schwarze 357: if (print_escape(h, *p++))
1.154 schwarze 358: continue;
1.77 kristaps 359:
1.132 kristaps 360: esc = mandoc_escape(&p, &seq, &len);
361: if (ESCAPE_ERROR == esc)
362: break;
1.82 kristaps 363:
1.132 kristaps 364: switch (esc) {
1.156 schwarze 365: case ESCAPE_FONT:
366: case ESCAPE_FONTPREV:
367: case ESCAPE_FONTBOLD:
368: case ESCAPE_FONTITALIC:
369: case ESCAPE_FONTBI:
370: case ESCAPE_FONTROMAN:
1.151 schwarze 371: if (0 == norecurse)
372: print_metaf(h, esc);
373: continue;
1.156 schwarze 374: case ESCAPE_SKIPCHAR:
1.151 schwarze 375: h->flags |= HTML_SKIPCHAR;
376: continue;
377: default:
378: break;
379: }
380:
381: if (h->flags & HTML_SKIPCHAR) {
382: h->flags &= ~HTML_SKIPCHAR;
383: continue;
384: }
385:
386: switch (esc) {
1.156 schwarze 387: case ESCAPE_UNICODE:
1.159 schwarze 388: /* Skip past "u" header. */
1.144 kristaps 389: c = mchars_num2uc(seq + 1, len - 1);
390: break;
1.156 schwarze 391: case ESCAPE_NUMBERED:
1.141 kristaps 392: c = mchars_num2char(seq, len);
1.181 schwarze 393: if (c < 0)
394: continue;
1.82 kristaps 395: break;
1.156 schwarze 396: case ESCAPE_SPECIAL:
1.191 schwarze 397: c = mchars_spec2cp(seq, len);
1.181 schwarze 398: if (c <= 0)
399: continue;
1.132 kristaps 400: break;
1.156 schwarze 401: case ESCAPE_NOSPACE:
1.132 kristaps 402: if ('\0' == *p)
403: nospace = 1;
1.179 schwarze 404: continue;
1.185 schwarze 405: case ESCAPE_OVERSTRIKE:
406: if (len == 0)
407: continue;
408: c = seq[len - 1];
409: break;
1.82 kristaps 410: default:
1.179 schwarze 411: continue;
1.82 kristaps 412: }
1.181 schwarze 413: if ((c < 0x20 && c != 0x09) ||
414: (c > 0x7E && c < 0xA0))
1.179 schwarze 415: c = 0xFFFD;
1.197 schwarze 416: if (c > 0x7E) {
417: (void)snprintf(numbuf, sizeof(numbuf), "&#%d;", c);
418: print_word(h, numbuf);
419: } else if (print_escape(h, c) == 0)
420: print_byte(h, c);
1.32 kristaps 421: }
1.85 kristaps 422:
1.188 schwarze 423: return nospace;
1.14 kristaps 424: }
425:
1.94 kristaps 426: static void
1.195 schwarze 427: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 428: {
1.195 schwarze 429: const char *p, *pp;
430:
431: pp = man ? h->base_man : h->base_includes;
432: while ((p = strchr(pp, '%')) != NULL) {
433: print_encode(h, pp, p, 1);
434: if (man && p[1] == 'S') {
435: if (sec == NULL)
1.197 schwarze 436: print_byte(h, '1');
1.195 schwarze 437: else
438: print_encode(h, sec, NULL, 1);
439: } else if ((man && p[1] == 'N') ||
440: (man == 0 && p[1] == 'I'))
441: print_encode(h, name, NULL, 1);
442: else
443: print_encode(h, p, p + 2, 1);
444: pp = p + 2;
445: }
446: if (*pp != '\0')
447: print_encode(h, pp, NULL, 1);
1.94 kristaps 448: }
449:
1.51 kristaps 450: struct tag *
1.194 schwarze 451: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 452: {
1.194 schwarze 453: va_list ap;
454: struct roffsu mysu, *su;
1.197 schwarze 455: char numbuf[16];
1.30 kristaps 456: struct tag *t;
1.195 schwarze 457: const char *attr;
1.194 schwarze 458: char *s;
1.195 schwarze 459: double v;
1.196 schwarze 460: int i, have_style, tflags;
461:
462: tflags = htmltags[tag].flags;
1.30 kristaps 463:
1.94 kristaps 464: /* Push this tags onto the stack of open scopes. */
465:
1.196 schwarze 466: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 467: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 468: t->tag = tag;
1.66 kristaps 469: t->next = h->tags.head;
470: h->tags.head = t;
1.30 kristaps 471: } else
472: t = NULL;
1.29 kristaps 473:
1.196 schwarze 474: if (tflags & HTML_NLBEFORE)
1.197 schwarze 475: print_endline(h);
476: if (h->col == 0)
477: print_indent(h);
1.196 schwarze 478: else if ((h->flags & HTML_NOSPACE) == 0) {
479: if (h->flags & HTML_KEEP)
1.197 schwarze 480: print_word(h, " ");
1.196 schwarze 481: else {
482: if (h->flags & HTML_PREKEEP)
483: h->flags |= HTML_KEEP;
1.197 schwarze 484: print_endword(h);
1.105 kristaps 485: }
1.196 schwarze 486: }
1.29 kristaps 487:
1.109 kristaps 488: if ( ! (h->flags & HTML_NONOSPACE))
489: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 490: else
491: h->flags |= HTML_NOSPACE;
1.109 kristaps 492:
1.94 kristaps 493: /* Print out the tag name and attributes. */
494:
1.197 schwarze 495: print_byte(h, '<');
496: print_word(h, htmltags[tag].name);
1.194 schwarze 497:
498: va_start(ap, fmt);
499:
500: have_style = 0;
501: while (*fmt != '\0') {
502: if (*fmt == 's') {
1.197 schwarze 503: print_word(h, " style=\"");
1.194 schwarze 504: have_style = 1;
505: fmt++;
506: break;
507: }
508: s = va_arg(ap, char *);
509: switch (*fmt++) {
510: case 'c':
1.195 schwarze 511: attr = "class";
1.194 schwarze 512: break;
513: case 'h':
1.195 schwarze 514: attr = "href";
1.194 schwarze 515: break;
516: case 'i':
1.195 schwarze 517: attr = "id";
1.194 schwarze 518: break;
519: case '?':
1.195 schwarze 520: attr = s;
521: s = va_arg(ap, char *);
1.194 schwarze 522: break;
523: default:
524: abort();
525: }
1.197 schwarze 526: print_byte(h, ' ');
527: print_word(h, attr);
528: print_byte(h, '=');
529: print_byte(h, '"');
1.195 schwarze 530: switch (*fmt) {
531: case 'M':
532: print_href(h, s, va_arg(ap, char *), 1);
533: fmt++;
534: break;
535: case 'I':
536: print_href(h, s, NULL, 0);
537: fmt++;
538: break;
539: case 'R':
1.197 schwarze 540: print_byte(h, '#');
1.195 schwarze 541: fmt++;
542: /* FALLTHROUGH */
543: default:
544: print_encode(h, s, NULL, 1);
545: break;
546: }
1.197 schwarze 547: print_byte(h, '"');
1.194 schwarze 548: }
549:
550: /* Print out styles. */
551:
552: s = NULL;
553: su = &mysu;
554: while (*fmt != '\0') {
555:
556: /* First letter: input argument type. */
557:
558: switch (*fmt++) {
559: case 'h':
560: i = va_arg(ap, int);
561: SCALE_HS_INIT(su, i);
562: break;
563: case 's':
564: s = va_arg(ap, char *);
565: break;
566: case 'u':
567: su = va_arg(ap, struct roffsu *);
568: break;
569: case 'v':
570: i = va_arg(ap, int);
571: SCALE_VS_INIT(su, i);
572: break;
573: case 'w':
574: s = va_arg(ap, char *);
575: a2width(s, su);
576: break;
577: default:
578: abort();
579: }
580:
581: /* Second letter: style name. */
582:
583: switch (*fmt++) {
584: case 'b':
1.195 schwarze 585: attr = "margin-bottom";
1.194 schwarze 586: break;
587: case 'h':
1.195 schwarze 588: attr = "height";
1.194 schwarze 589: break;
590: case 'i':
1.195 schwarze 591: attr = "text-indent";
1.194 schwarze 592: break;
593: case 'l':
1.195 schwarze 594: attr = "margin-left";
1.194 schwarze 595: break;
596: case 't':
1.195 schwarze 597: attr = "margin-top";
1.194 schwarze 598: break;
599: case 'w':
1.195 schwarze 600: attr = "width";
1.194 schwarze 601: break;
602: case 'W':
1.195 schwarze 603: attr = "min-width";
1.194 schwarze 604: break;
605: case '?':
1.197 schwarze 606: print_word(h, s);
607: print_byte(h, ':');
608: print_byte(h, ' ');
609: print_word(h, va_arg(ap, char *));
610: print_byte(h, ';');
611: if (*fmt != '\0')
612: print_byte(h, ' ');
1.195 schwarze 613: continue;
1.194 schwarze 614: default:
615: abort();
616: }
1.195 schwarze 617: v = su->scale;
618: if (su->unit == SCALE_MM && (v /= 100.0) == 0.0)
619: v = 1.0;
620: else if (su->unit == SCALE_BU)
621: v /= 24.0;
1.197 schwarze 622: print_word(h, attr);
623: print_byte(h, ':');
624: print_byte(h, ' ');
625: (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v);
626: print_word(h, numbuf);
627: print_word(h, roffscales[su->unit]);
628: print_byte(h, ';');
629: if (*fmt != '\0')
630: print_byte(h, ' ');
1.194 schwarze 631: }
632: if (have_style)
1.197 schwarze 633: print_byte(h, '"');
1.194 schwarze 634:
635: va_end(ap);
1.94 kristaps 636:
1.172 kristaps 637: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 638:
1.93 kristaps 639: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 640: print_byte(h, '/');
1.93 kristaps 641:
1.197 schwarze 642: print_byte(h, '>');
1.14 kristaps 643:
1.196 schwarze 644: if (tflags & HTML_NLBEGIN)
1.197 schwarze 645: print_endline(h);
1.196 schwarze 646: else
647: h->flags |= HTML_NOSPACE;
1.117 kristaps 648:
1.196 schwarze 649: if (tflags & HTML_INDENT)
650: h->indent++;
651: if (tflags & HTML_NOINDENT)
652: h->noindent++;
1.117 kristaps 653:
1.188 schwarze 654: return t;
1.14 kristaps 655: }
656:
1.29 kristaps 657: static void
1.184 schwarze 658: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 659: {
1.196 schwarze 660: int tflags;
1.156 schwarze 661:
1.184 schwarze 662: /*
663: * Remember to close out and nullify the current
664: * meta-font and table, if applicable.
665: */
666: if (tag == h->metaf)
667: h->metaf = NULL;
668: if (tag == h->tblt)
669: h->tblt = NULL;
670:
1.196 schwarze 671: tflags = htmltags[tag->tag].flags;
672:
673: if (tflags & HTML_INDENT)
674: h->indent--;
675: if (tflags & HTML_NOINDENT)
676: h->noindent--;
677: if (tflags & HTML_NLEND)
1.197 schwarze 678: print_endline(h);
679: print_indent(h);
680: print_byte(h, '<');
681: print_byte(h, '/');
682: print_word(h, htmltags[tag->tag].name);
683: print_byte(h, '>');
1.196 schwarze 684: if (tflags & HTML_NLAFTER)
1.197 schwarze 685: print_endline(h);
1.184 schwarze 686:
687: h->tags.head = tag->next;
688: free(tag);
1.14 kristaps 689: }
690:
1.51 kristaps 691: void
1.93 kristaps 692: print_gen_decls(struct html *h)
1.1 kristaps 693: {
1.197 schwarze 694: print_word(h, "<!DOCTYPE html>");
695: print_endline(h);
1.1 kristaps 696: }
697:
1.51 kristaps 698: void
1.104 kristaps 699: print_text(struct html *h, const char *word)
1.1 kristaps 700: {
1.197 schwarze 701: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 702: if ( ! (HTML_KEEP & h->flags)) {
703: if (HTML_PREKEEP & h->flags)
704: h->flags |= HTML_KEEP;
1.197 schwarze 705: print_endword(h);
1.105 kristaps 706: } else
1.197 schwarze 707: print_word(h, " ");
1.105 kristaps 708: }
1.30 kristaps 709:
1.122 kristaps 710: assert(NULL == h->metaf);
1.152 schwarze 711: switch (h->metac) {
1.156 schwarze 712: case HTMLFONT_ITALIC:
1.194 schwarze 713: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 714: break;
1.156 schwarze 715: case HTMLFONT_BOLD:
1.194 schwarze 716: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 717: break;
1.156 schwarze 718: case HTMLFONT_BI:
1.194 schwarze 719: h->metaf = print_otag(h, TAG_B, "");
720: print_otag(h, TAG_I, "");
1.152 schwarze 721: break;
722: default:
1.197 schwarze 723: print_indent(h);
1.152 schwarze 724: break;
725: }
1.122 kristaps 726:
1.104 kristaps 727: assert(word);
1.195 schwarze 728: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 729: if ( ! (h->flags & HTML_NONOSPACE))
730: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 731: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 732: } else
1.183 schwarze 733: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 734:
735: if (h->metaf) {
736: print_tagq(h, h->metaf);
737: h->metaf = NULL;
738: }
1.113 schwarze 739:
740: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 741: }
1.30 kristaps 742:
1.51 kristaps 743: void
1.30 kristaps 744: print_tagq(struct html *h, const struct tag *until)
745: {
746: struct tag *tag;
747:
1.66 kristaps 748: while ((tag = h->tags.head) != NULL) {
1.184 schwarze 749: print_ctag(h, tag);
1.30 kristaps 750: if (until && tag == until)
751: return;
752: }
753: }
754:
1.51 kristaps 755: void
1.30 kristaps 756: print_stagq(struct html *h, const struct tag *suntil)
757: {
758: struct tag *tag;
759:
1.66 kristaps 760: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 761: if (suntil && tag == suntil)
762: return;
1.184 schwarze 763: print_ctag(h, tag);
1.30 kristaps 764: }
765: }
1.171 kristaps 766:
767: void
768: print_paragraph(struct html *h)
769: {
770: struct tag *t;
771:
1.198 ! schwarze 772: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 773: print_tagq(h, t);
774: }
775:
1.197 schwarze 776:
777: /***********************************************************************
778: * Low level output functions.
779: * They implement line breaking using a short static buffer.
780: ***********************************************************************/
781:
782: /*
783: * Buffer one HTML output byte.
784: * If the buffer is full, flush and deactivate it and start a new line.
785: * If the buffer is inactive, print directly.
786: */
787: static void
788: print_byte(struct html *h, char c)
789: {
790: if ((h->flags & HTML_BUFFER) == 0) {
791: putchar(c);
792: h->col++;
793: return;
794: }
795:
796: if (h->col + h->bufcol < sizeof(h->buf)) {
797: h->buf[h->bufcol++] = c;
798: return;
799: }
800:
801: putchar('\n');
802: h->col = 0;
803: print_indent(h);
804: putchar(' ');
805: putchar(' ');
806: fwrite(h->buf, h->bufcol, 1, stdout);
807: putchar(c);
808: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
809: h->bufcol = 0;
810: h->flags &= ~HTML_BUFFER;
811: }
812:
1.196 schwarze 813: /*
814: * If something was printed on the current output line, end it.
1.197 schwarze 815: * Not to be called right after print_indent().
1.196 schwarze 816: */
817: static void
1.197 schwarze 818: print_endline(struct html *h)
1.196 schwarze 819: {
1.197 schwarze 820: if (h->col == 0)
1.196 schwarze 821: return;
822:
1.197 schwarze 823: if (h->bufcol) {
824: putchar(' ');
825: fwrite(h->buf, h->bufcol, 1, stdout);
826: h->bufcol = 0;
827: }
1.196 schwarze 828: putchar('\n');
1.197 schwarze 829: h->col = 0;
830: h->flags |= HTML_NOSPACE;
831: h->flags &= ~HTML_BUFFER;
832: }
833:
834: /*
835: * Flush the HTML output buffer.
836: * If it is inactive, activate it.
837: */
838: static void
839: print_endword(struct html *h)
840: {
841: if (h->noindent) {
842: print_byte(h, ' ');
843: return;
844: }
845:
846: if ((h->flags & HTML_BUFFER) == 0) {
847: h->col++;
848: h->flags |= HTML_BUFFER;
849: } else if (h->bufcol) {
850: putchar(' ');
851: fwrite(h->buf, h->bufcol, 1, stdout);
852: h->col += h->bufcol + 1;
853: }
854: h->bufcol = 0;
1.196 schwarze 855: }
856:
857: /*
858: * If at the beginning of a new output line,
859: * perform indentation and mark the line as containing output.
860: * Make sure to really produce some output right afterwards,
861: * but do not use print_otag() for producing it.
862: */
863: static void
1.197 schwarze 864: print_indent(struct html *h)
1.196 schwarze 865: {
1.197 schwarze 866: size_t i;
1.196 schwarze 867:
1.197 schwarze 868: if (h->col)
1.196 schwarze 869: return;
870:
1.197 schwarze 871: if (h->noindent == 0) {
872: h->col = h->indent * 2;
873: for (i = 0; i < h->col; i++)
1.196 schwarze 874: putchar(' ');
1.197 schwarze 875: }
876: h->flags &= ~HTML_NOSPACE;
877: }
878:
879: /*
880: * Print or buffer some characters
881: * depending on the current HTML output buffer state.
882: */
883: static void
884: print_word(struct html *h, const char *cp)
885: {
886: while (*cp != '\0')
887: print_byte(h, *cp++);
1.196 schwarze 888: }
1.194 schwarze 889:
890: /*
891: * Calculate the scaling unit passed in a `-width' argument. This uses
892: * either a native scaling unit (e.g., 1i, 2m) or the string length of
893: * the value.
894: */
895: static void
896: a2width(const char *p, struct roffsu *su)
897: {
898: if (a2roffsu(p, su, SCALE_MAX) < 2) {
899: su->unit = SCALE_EN;
900: su->scale = html_strlen(p);
901: } else if (su->scale < 0.0)
902: su->scale = 0.0;
1.68 kristaps 903: }
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