Annotation of mandoc/html.c, Revision 1.223
1.223 ! schwarze 1: /* $Id: html.c,v 1.222 2018/05/01 23:36:55 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>
1.29 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:
1.210 schwarze 31: #include "mandoc_aux.h"
1.100 kristaps 32: #include "mandoc.h"
1.210 schwarze 33: #include "roff.h"
1.58 kristaps 34: #include "out.h"
1.51 kristaps 35: #include "html.h"
1.186 schwarze 36: #include "manconf.h"
1.64 kristaps 37: #include "main.h"
1.63 kristaps 38:
1.29 kristaps 39: struct htmldata {
1.63 kristaps 40: const char *name;
1.29 kristaps 41: int flags;
1.196 schwarze 42: #define HTML_NOSTACK (1 << 0)
43: #define HTML_AUTOCLOSE (1 << 1)
44: #define HTML_NLBEFORE (1 << 2)
45: #define HTML_NLBEGIN (1 << 3)
46: #define HTML_NLEND (1 << 4)
47: #define HTML_NLAFTER (1 << 5)
48: #define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER)
49: #define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND)
50: #define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE)
51: #define HTML_INDENT (1 << 6)
52: #define HTML_NOINDENT (1 << 7)
1.29 kristaps 53: };
1.7 kristaps 54:
1.29 kristaps 55: static const struct htmldata htmltags[TAG_MAX] = {
1.196 schwarze 56: {"html", HTML_NLALL},
57: {"head", HTML_NLALL | HTML_INDENT},
58: {"body", HTML_NLALL},
59: {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
60: {"title", HTML_NLAROUND},
61: {"div", HTML_NLAROUND},
62: {"h1", HTML_NLAROUND},
63: {"h2", HTML_NLAROUND},
64: {"span", 0},
65: {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
66: {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
67: {"a", 0},
68: {"table", HTML_NLALL | HTML_INDENT},
1.205 schwarze 69: {"colgroup", HTML_NLALL | HTML_INDENT},
1.196 schwarze 70: {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
71: {"tr", HTML_NLALL | HTML_INDENT},
72: {"td", HTML_NLAROUND},
73: {"li", HTML_NLAROUND | HTML_INDENT},
74: {"ul", HTML_NLALL | HTML_INDENT},
75: {"ol", HTML_NLALL | HTML_INDENT},
76: {"dl", HTML_NLALL | HTML_INDENT},
77: {"dt", HTML_NLAROUND},
78: {"dd", HTML_NLAROUND | HTML_INDENT},
79: {"pre", HTML_NLALL | HTML_NOINDENT},
1.207 schwarze 80: {"var", 0},
1.206 schwarze 81: {"cite", 0},
1.196 schwarze 82: {"b", 0},
83: {"i", 0},
84: {"code", 0},
85: {"small", 0},
86: {"style", HTML_NLALL | HTML_INDENT},
87: {"math", HTML_NLALL | HTML_INDENT},
88: {"mrow", 0},
89: {"mi", 0},
1.215 schwarze 90: {"mn", 0},
1.196 schwarze 91: {"mo", 0},
92: {"msup", 0},
93: {"msub", 0},
94: {"msubsup", 0},
95: {"mfrac", 0},
96: {"msqrt", 0},
97: {"mfenced", 0},
98: {"mtable", 0},
99: {"mtr", 0},
100: {"mtd", 0},
101: {"munderover", 0},
102: {"munder", 0},
103: {"mover", 0},
1.90 kristaps 104: };
105:
1.140 kristaps 106: static const char *const roffscales[SCALE_MAX] = {
107: "cm", /* SCALE_CM */
108: "in", /* SCALE_IN */
109: "pc", /* SCALE_PC */
110: "pt", /* SCALE_PT */
111: "em", /* SCALE_EM */
112: "em", /* SCALE_MM */
113: "ex", /* SCALE_EN */
114: "ex", /* SCALE_BU */
115: "em", /* SCALE_VS */
116: "ex", /* SCALE_FS */
117: };
118:
1.194 schwarze 119: static void a2width(const char *, struct roffsu *);
1.197 schwarze 120: static void print_byte(struct html *, char);
121: static void print_endword(struct html *);
122: static void print_indent(struct html *);
123: static void print_word(struct html *, const char *);
124:
1.184 schwarze 125: static void print_ctag(struct html *, struct tag *);
1.197 schwarze 126: static int print_escape(struct html *, char);
1.195 schwarze 127: static int print_encode(struct html *, const char *, const char *, int);
128: static void print_href(struct html *, const char *, const char *, int);
1.141 kristaps 129: static void print_metaf(struct html *, enum mandoc_esc);
1.82 kristaps 130:
1.156 schwarze 131:
1.180 schwarze 132: void *
1.191 schwarze 133: html_alloc(const struct manoutput *outopts)
1.10 kristaps 134: {
1.30 kristaps 135: struct html *h;
136:
1.128 kristaps 137: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 138:
1.204 schwarze 139: h->tag = NULL;
1.186 schwarze 140: h->style = outopts->style;
141: h->base_man = outopts->man;
142: h->base_includes = outopts->includes;
143: if (outopts->fragment)
144: h->oflags |= HTML_FRAGMENT;
1.43 kristaps 145:
1.188 schwarze 146: return h;
1.29 kristaps 147: }
1.10 kristaps 148:
1.29 kristaps 149: void
150: html_free(void *p)
151: {
1.30 kristaps 152: struct tag *tag;
153: struct html *h;
154:
155: h = (struct html *)p;
1.37 kristaps 156:
1.204 schwarze 157: while ((tag = h->tag) != NULL) {
158: h->tag = tag->next;
1.30 kristaps 159: free(tag);
160: }
1.53 kristaps 161:
1.30 kristaps 162: free(h);
1.10 kristaps 163: }
1.2 kristaps 164:
1.51 kristaps 165: void
1.29 kristaps 166: print_gen_head(struct html *h)
167: {
1.165 kristaps 168: struct tag *t;
1.41 kristaps 169:
1.194 schwarze 170: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.222 schwarze 171: if (h->style != NULL) {
172: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
173: h->style, "type", "text/css", "media", "all");
174: return;
175: }
1.165 kristaps 176:
1.168 kristaps 177: /*
1.222 schwarze 178: * Print a minimal embedded style sheet.
1.168 kristaps 179: */
1.196 schwarze 180:
1.194 schwarze 181: t = print_otag(h, TAG_STYLE, "");
1.196 schwarze 182: print_text(h, "table.head, table.foot { width: 100%; }");
1.197 schwarze 183: print_endline(h);
1.196 schwarze 184: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197 schwarze 185: print_endline(h);
1.196 schwarze 186: print_text(h, "td.head-vol { text-align: center; }");
1.197 schwarze 187: print_endline(h);
1.198 schwarze 188: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.223 ! schwarze 189: print_endline(h);
! 190: print_text(h, "code.Nm, code.Fl, code.Cm, code.Ic, "
! 191: "code.In, code.Fd, code.Fn,");
! 192: print_endline(h);
! 193: print_text(h, "code.Cd { font-weight: bold; "
! 194: "font-family: inherit; }");
1.165 kristaps 195: print_tagq(h, t);
1.4 kristaps 196: }
197:
1.126 schwarze 198: static void
1.132 kristaps 199: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 200: {
1.90 kristaps 201: enum htmlfont font;
1.88 kristaps 202:
203: switch (deco) {
1.156 schwarze 204: case ESCAPE_FONTPREV:
1.90 kristaps 205: font = h->metal;
1.88 kristaps 206: break;
1.156 schwarze 207: case ESCAPE_FONTITALIC:
1.90 kristaps 208: font = HTMLFONT_ITALIC;
209: break;
1.156 schwarze 210: case ESCAPE_FONTBOLD:
1.90 kristaps 211: font = HTMLFONT_BOLD;
1.88 kristaps 212: break;
1.156 schwarze 213: case ESCAPE_FONTBI:
1.152 schwarze 214: font = HTMLFONT_BI;
215: break;
1.156 schwarze 216: case ESCAPE_FONT:
217: case ESCAPE_FONTROMAN:
1.90 kristaps 218: font = HTMLFONT_NONE;
1.88 kristaps 219: break;
220: default:
221: abort();
222: }
223:
1.122 kristaps 224: if (h->metaf) {
225: print_tagq(h, h->metaf);
226: h->metaf = NULL;
227: }
228:
229: h->metal = h->metac;
230: h->metac = font;
231:
1.152 schwarze 232: switch (font) {
1.156 schwarze 233: case HTMLFONT_ITALIC:
1.194 schwarze 234: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 235: break;
1.156 schwarze 236: case HTMLFONT_BOLD:
1.194 schwarze 237: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 238: break;
1.156 schwarze 239: case HTMLFONT_BI:
1.194 schwarze 240: h->metaf = print_otag(h, TAG_B, "");
241: print_otag(h, TAG_I, "");
1.152 schwarze 242: break;
243: default:
244: break;
245: }
1.210 schwarze 246: }
247:
248: char *
249: html_make_id(const struct roff_node *n)
250: {
251: const struct roff_node *nch;
252: char *buf, *cp;
253:
254: for (nch = n->child; nch != NULL; nch = nch->next)
255: if (nch->type != ROFFT_TEXT)
256: return NULL;
257:
258: buf = NULL;
259: deroff(&buf, n);
1.220 schwarze 260: if (buf == NULL)
261: return NULL;
1.210 schwarze 262:
263: /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */
264:
265: for (cp = buf; *cp != '\0'; cp++)
266: if (*cp == ' ')
267: *cp = '_';
268:
269: return buf;
1.88 kristaps 270: }
271:
1.138 kristaps 272: int
273: html_strlen(const char *cp)
274: {
1.151 schwarze 275: size_t rsz;
276: int skip, sz;
1.138 kristaps 277:
278: /*
279: * Account for escaped sequences within string length
280: * calculations. This follows the logic in term_strlen() as we
281: * must calculate the width of produced strings.
282: * Assume that characters are always width of "1". This is
283: * hacky, but it gets the job done for approximation of widths.
284: */
285:
286: sz = 0;
1.151 schwarze 287: skip = 0;
288: while (1) {
289: rsz = strcspn(cp, "\\");
290: if (rsz) {
291: cp += rsz;
292: if (skip) {
293: skip = 0;
294: rsz--;
295: }
296: sz += rsz;
297: }
298: if ('\0' == *cp)
299: break;
300: cp++;
301: switch (mandoc_escape(&cp, NULL, NULL)) {
1.156 schwarze 302: case ESCAPE_ERROR:
1.188 schwarze 303: return sz;
1.156 schwarze 304: case ESCAPE_UNICODE:
305: case ESCAPE_NUMBERED:
306: case ESCAPE_SPECIAL:
1.185 schwarze 307: case ESCAPE_OVERSTRIKE:
1.151 schwarze 308: if (skip)
309: skip = 0;
310: else
311: sz++;
312: break;
1.156 schwarze 313: case ESCAPE_SKIPCHAR:
1.151 schwarze 314: skip = 1;
1.138 kristaps 315: break;
316: default:
317: break;
318: }
319: }
1.188 schwarze 320: return sz;
1.138 kristaps 321: }
1.88 kristaps 322:
1.85 kristaps 323: static int
1.197 schwarze 324: print_escape(struct html *h, char c)
1.159 schwarze 325: {
326:
327: switch (c) {
328: case '<':
1.197 schwarze 329: print_word(h, "<");
1.159 schwarze 330: break;
331: case '>':
1.197 schwarze 332: print_word(h, ">");
1.159 schwarze 333: break;
334: case '&':
1.197 schwarze 335: print_word(h, "&");
1.159 schwarze 336: break;
337: case '"':
1.197 schwarze 338: print_word(h, """);
1.159 schwarze 339: break;
340: case ASCII_NBRSP:
1.197 schwarze 341: print_word(h, " ");
1.159 schwarze 342: break;
343: case ASCII_HYPH:
1.197 schwarze 344: print_byte(h, '-');
1.189 schwarze 345: break;
1.159 schwarze 346: case ASCII_BREAK:
347: break;
348: default:
1.188 schwarze 349: return 0;
1.159 schwarze 350: }
1.188 schwarze 351: return 1;
1.159 schwarze 352: }
353:
354: static int
1.195 schwarze 355: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 356: {
1.197 schwarze 357: char numbuf[16];
1.214 schwarze 358: struct tag *t;
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)) {
384: t = print_otag(h, TAG_DIV, "");
385: print_text(h, "\\~");
386: print_tagq(h, t);
387: breakline = 0;
388: while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
389: p++;
390: continue;
391: }
1.77 kristaps 392:
1.195 schwarze 393: if (p >= pend)
1.132 kristaps 394: break;
395:
1.214 schwarze 396: if (*p == ' ') {
397: print_endword(h);
398: p++;
399: continue;
400: }
401:
1.197 schwarze 402: if (print_escape(h, *p++))
1.154 schwarze 403: continue;
1.77 kristaps 404:
1.132 kristaps 405: esc = mandoc_escape(&p, &seq, &len);
406: if (ESCAPE_ERROR == esc)
407: break;
1.82 kristaps 408:
1.132 kristaps 409: switch (esc) {
1.156 schwarze 410: case ESCAPE_FONT:
411: case ESCAPE_FONTPREV:
412: case ESCAPE_FONTBOLD:
413: case ESCAPE_FONTITALIC:
414: case ESCAPE_FONTBI:
415: case ESCAPE_FONTROMAN:
1.151 schwarze 416: if (0 == norecurse)
417: print_metaf(h, esc);
418: continue;
1.156 schwarze 419: case ESCAPE_SKIPCHAR:
1.151 schwarze 420: h->flags |= HTML_SKIPCHAR;
421: continue;
422: default:
423: break;
424: }
425:
426: if (h->flags & HTML_SKIPCHAR) {
427: h->flags &= ~HTML_SKIPCHAR;
428: continue;
429: }
430:
431: switch (esc) {
1.156 schwarze 432: case ESCAPE_UNICODE:
1.159 schwarze 433: /* Skip past "u" header. */
1.144 kristaps 434: c = mchars_num2uc(seq + 1, len - 1);
435: break;
1.156 schwarze 436: case ESCAPE_NUMBERED:
1.141 kristaps 437: c = mchars_num2char(seq, len);
1.181 schwarze 438: if (c < 0)
439: continue;
1.82 kristaps 440: break;
1.156 schwarze 441: case ESCAPE_SPECIAL:
1.191 schwarze 442: c = mchars_spec2cp(seq, len);
1.181 schwarze 443: if (c <= 0)
444: continue;
1.132 kristaps 445: break;
1.214 schwarze 446: case ESCAPE_BREAK:
447: breakline = 1;
448: continue;
1.156 schwarze 449: case ESCAPE_NOSPACE:
1.132 kristaps 450: if ('\0' == *p)
451: nospace = 1;
1.179 schwarze 452: continue;
1.185 schwarze 453: case ESCAPE_OVERSTRIKE:
454: if (len == 0)
455: continue;
456: c = seq[len - 1];
457: break;
1.82 kristaps 458: default:
1.179 schwarze 459: continue;
1.82 kristaps 460: }
1.181 schwarze 461: if ((c < 0x20 && c != 0x09) ||
462: (c > 0x7E && c < 0xA0))
1.179 schwarze 463: c = 0xFFFD;
1.197 schwarze 464: if (c > 0x7E) {
1.216 schwarze 465: (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197 schwarze 466: print_word(h, numbuf);
467: } else if (print_escape(h, c) == 0)
468: print_byte(h, c);
1.32 kristaps 469: }
1.85 kristaps 470:
1.188 schwarze 471: return nospace;
1.14 kristaps 472: }
473:
1.94 kristaps 474: static void
1.195 schwarze 475: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 476: {
1.195 schwarze 477: const char *p, *pp;
478:
479: pp = man ? h->base_man : h->base_includes;
480: while ((p = strchr(pp, '%')) != NULL) {
481: print_encode(h, pp, p, 1);
482: if (man && p[1] == 'S') {
483: if (sec == NULL)
1.197 schwarze 484: print_byte(h, '1');
1.195 schwarze 485: else
486: print_encode(h, sec, NULL, 1);
487: } else if ((man && p[1] == 'N') ||
488: (man == 0 && p[1] == 'I'))
489: print_encode(h, name, NULL, 1);
490: else
491: print_encode(h, p, p + 2, 1);
492: pp = p + 2;
493: }
494: if (*pp != '\0')
495: print_encode(h, pp, NULL, 1);
1.94 kristaps 496: }
497:
1.51 kristaps 498: struct tag *
1.194 schwarze 499: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 500: {
1.194 schwarze 501: va_list ap;
502: struct roffsu mysu, *su;
1.197 schwarze 503: char numbuf[16];
1.30 kristaps 504: struct tag *t;
1.195 schwarze 505: const char *attr;
1.203 schwarze 506: char *arg1, *arg2;
1.195 schwarze 507: double v;
1.196 schwarze 508: int i, have_style, tflags;
509:
510: tflags = htmltags[tag].flags;
1.30 kristaps 511:
1.204 schwarze 512: /* Push this tag onto the stack of open scopes. */
1.94 kristaps 513:
1.196 schwarze 514: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 515: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 516: t->tag = tag;
1.204 schwarze 517: t->next = h->tag;
518: h->tag = t;
1.30 kristaps 519: } else
520: t = NULL;
1.29 kristaps 521:
1.196 schwarze 522: if (tflags & HTML_NLBEFORE)
1.197 schwarze 523: print_endline(h);
524: if (h->col == 0)
525: print_indent(h);
1.196 schwarze 526: else if ((h->flags & HTML_NOSPACE) == 0) {
527: if (h->flags & HTML_KEEP)
1.216 schwarze 528: print_word(h, " ");
1.196 schwarze 529: else {
530: if (h->flags & HTML_PREKEEP)
531: h->flags |= HTML_KEEP;
1.197 schwarze 532: print_endword(h);
1.105 kristaps 533: }
1.196 schwarze 534: }
1.29 kristaps 535:
1.109 kristaps 536: if ( ! (h->flags & HTML_NONOSPACE))
537: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 538: else
539: h->flags |= HTML_NOSPACE;
1.109 kristaps 540:
1.94 kristaps 541: /* Print out the tag name and attributes. */
542:
1.197 schwarze 543: print_byte(h, '<');
544: print_word(h, htmltags[tag].name);
1.194 schwarze 545:
546: va_start(ap, fmt);
547:
548: have_style = 0;
549: while (*fmt != '\0') {
550: if (*fmt == 's') {
551: have_style = 1;
552: fmt++;
553: break;
554: }
1.203 schwarze 555:
556: /* Parse a non-style attribute and its arguments. */
557:
558: arg1 = va_arg(ap, char *);
1.194 schwarze 559: switch (*fmt++) {
560: case 'c':
1.195 schwarze 561: attr = "class";
1.194 schwarze 562: break;
563: case 'h':
1.195 schwarze 564: attr = "href";
1.194 schwarze 565: break;
566: case 'i':
1.195 schwarze 567: attr = "id";
1.194 schwarze 568: break;
569: case '?':
1.203 schwarze 570: attr = arg1;
571: arg1 = va_arg(ap, char *);
1.194 schwarze 572: break;
573: default:
574: abort();
575: }
1.203 schwarze 576: arg2 = NULL;
577: if (*fmt == 'M')
578: arg2 = va_arg(ap, char *);
579: if (arg1 == NULL)
580: continue;
581:
582: /* Print the non-style attributes. */
583:
1.197 schwarze 584: print_byte(h, ' ');
585: print_word(h, attr);
586: print_byte(h, '=');
587: print_byte(h, '"');
1.195 schwarze 588: switch (*fmt) {
1.208 schwarze 589: case 'I':
590: print_href(h, arg1, NULL, 0);
591: fmt++;
592: break;
1.195 schwarze 593: case 'M':
1.203 schwarze 594: print_href(h, arg1, arg2, 1);
1.195 schwarze 595: fmt++;
596: break;
1.208 schwarze 597: case 'R':
598: print_byte(h, '#');
599: print_encode(h, arg1, NULL, 1);
1.195 schwarze 600: fmt++;
601: break;
1.208 schwarze 602: case 'T':
603: print_encode(h, arg1, NULL, 1);
604: print_word(h, "\" title=\"");
605: print_encode(h, arg1, NULL, 1);
1.195 schwarze 606: fmt++;
1.208 schwarze 607: break;
1.195 schwarze 608: default:
1.203 schwarze 609: print_encode(h, arg1, NULL, 1);
1.195 schwarze 610: break;
611: }
1.197 schwarze 612: print_byte(h, '"');
1.194 schwarze 613: }
614:
615: /* Print out styles. */
616:
617: while (*fmt != '\0') {
1.203 schwarze 618: arg1 = NULL;
619: su = NULL;
1.194 schwarze 620:
621: /* First letter: input argument type. */
622:
623: switch (*fmt++) {
624: case 'h':
625: i = va_arg(ap, int);
1.203 schwarze 626: su = &mysu;
1.194 schwarze 627: SCALE_HS_INIT(su, i);
628: break;
629: case 's':
1.203 schwarze 630: arg1 = va_arg(ap, char *);
1.194 schwarze 631: break;
632: case 'u':
633: su = va_arg(ap, struct roffsu *);
634: break;
635: case 'w':
1.219 schwarze 636: if ((arg2 = va_arg(ap, char *)) != NULL) {
637: su = &mysu;
638: a2width(arg2, su);
639: }
640: if (*fmt == '*') {
641: if (su != NULL && su->unit == SCALE_EN &&
642: su->scale > 5.9 && su->scale < 6.1)
643: su = NULL;
644: fmt++;
1.218 schwarze 645: }
1.211 schwarze 646: if (*fmt == '+') {
1.219 schwarze 647: if (su != NULL) {
648: /* Make even bold text fit. */
649: su->scale *= 1.2;
650: /* Add padding. */
651: su->scale += 3.0;
652: }
1.211 schwarze 653: fmt++;
654: }
655: if (*fmt == '-') {
1.219 schwarze 656: if (su != NULL)
657: su->scale *= -1.0;
1.211 schwarze 658: fmt++;
659: }
1.194 schwarze 660: break;
661: default:
662: abort();
663: }
664:
665: /* Second letter: style name. */
666:
667: switch (*fmt++) {
668: case 'h':
1.195 schwarze 669: attr = "height";
1.194 schwarze 670: break;
671: case 'i':
1.195 schwarze 672: attr = "text-indent";
1.194 schwarze 673: break;
674: case 'l':
1.195 schwarze 675: attr = "margin-left";
1.194 schwarze 676: break;
677: case 'w':
1.195 schwarze 678: attr = "width";
1.194 schwarze 679: break;
680: case 'W':
1.195 schwarze 681: attr = "min-width";
1.194 schwarze 682: break;
683: case '?':
1.203 schwarze 684: attr = arg1;
685: arg1 = va_arg(ap, char *);
686: break;
1.194 schwarze 687: default:
688: abort();
689: }
1.203 schwarze 690: if (su == NULL && arg1 == NULL)
691: continue;
692:
693: if (have_style == 1)
694: print_word(h, " style=\"");
695: else
696: print_byte(h, ' ');
1.197 schwarze 697: print_word(h, attr);
698: print_byte(h, ':');
699: print_byte(h, ' ');
1.203 schwarze 700: if (su != NULL) {
701: v = su->scale;
702: if (su->unit == SCALE_MM && (v /= 100.0) == 0.0)
703: v = 1.0;
704: else if (su->unit == SCALE_BU)
705: v /= 24.0;
706: (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v);
707: print_word(h, numbuf);
708: print_word(h, roffscales[su->unit]);
709: } else
710: print_word(h, arg1);
1.197 schwarze 711: print_byte(h, ';');
1.203 schwarze 712: have_style = 2;
1.194 schwarze 713: }
1.203 schwarze 714: if (have_style == 2)
1.197 schwarze 715: print_byte(h, '"');
1.194 schwarze 716:
717: va_end(ap);
1.94 kristaps 718:
1.172 kristaps 719: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 720:
1.93 kristaps 721: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 722: print_byte(h, '/');
1.93 kristaps 723:
1.197 schwarze 724: print_byte(h, '>');
1.14 kristaps 725:
1.196 schwarze 726: if (tflags & HTML_NLBEGIN)
1.197 schwarze 727: print_endline(h);
1.196 schwarze 728: else
729: h->flags |= HTML_NOSPACE;
1.117 kristaps 730:
1.196 schwarze 731: if (tflags & HTML_INDENT)
732: h->indent++;
733: if (tflags & HTML_NOINDENT)
734: h->noindent++;
1.117 kristaps 735:
1.188 schwarze 736: return t;
1.14 kristaps 737: }
738:
1.29 kristaps 739: static void
1.184 schwarze 740: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 741: {
1.196 schwarze 742: int tflags;
1.156 schwarze 743:
1.184 schwarze 744: /*
745: * Remember to close out and nullify the current
746: * meta-font and table, if applicable.
747: */
748: if (tag == h->metaf)
749: h->metaf = NULL;
750: if (tag == h->tblt)
751: h->tblt = NULL;
752:
1.196 schwarze 753: tflags = htmltags[tag->tag].flags;
754:
755: if (tflags & HTML_INDENT)
756: h->indent--;
757: if (tflags & HTML_NOINDENT)
758: h->noindent--;
759: if (tflags & HTML_NLEND)
1.197 schwarze 760: print_endline(h);
761: print_indent(h);
762: print_byte(h, '<');
763: print_byte(h, '/');
764: print_word(h, htmltags[tag->tag].name);
765: print_byte(h, '>');
1.196 schwarze 766: if (tflags & HTML_NLAFTER)
1.197 schwarze 767: print_endline(h);
1.184 schwarze 768:
1.204 schwarze 769: h->tag = tag->next;
1.184 schwarze 770: free(tag);
1.14 kristaps 771: }
772:
1.51 kristaps 773: void
1.93 kristaps 774: print_gen_decls(struct html *h)
1.1 kristaps 775: {
1.197 schwarze 776: print_word(h, "<!DOCTYPE html>");
777: print_endline(h);
1.221 schwarze 778: }
779:
780: void
781: print_gen_comment(struct html *h, struct roff_node *n)
782: {
783: int wantblank;
784:
785: print_word(h, "<!-- This is an automatically generated file."
786: " Do not edit.");
787: h->indent = 1;
788: wantblank = 0;
789: while (n != NULL && n->type == ROFFT_COMMENT) {
790: if (strstr(n->string, "-->") == NULL &&
791: (wantblank || *n->string != '\0')) {
792: print_endline(h);
793: print_indent(h);
794: print_word(h, n->string);
795: wantblank = *n->string != '\0';
796: }
797: n = n->next;
798: }
799: if (wantblank)
800: print_endline(h);
801: print_word(h, " -->");
802: print_endline(h);
803: h->indent = 0;
1.1 kristaps 804: }
805:
1.51 kristaps 806: void
1.104 kristaps 807: print_text(struct html *h, const char *word)
1.1 kristaps 808: {
1.197 schwarze 809: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 810: if ( ! (HTML_KEEP & h->flags)) {
811: if (HTML_PREKEEP & h->flags)
812: h->flags |= HTML_KEEP;
1.197 schwarze 813: print_endword(h);
1.105 kristaps 814: } else
1.216 schwarze 815: print_word(h, " ");
1.105 kristaps 816: }
1.30 kristaps 817:
1.122 kristaps 818: assert(NULL == h->metaf);
1.152 schwarze 819: switch (h->metac) {
1.156 schwarze 820: case HTMLFONT_ITALIC:
1.194 schwarze 821: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 822: break;
1.156 schwarze 823: case HTMLFONT_BOLD:
1.194 schwarze 824: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 825: break;
1.156 schwarze 826: case HTMLFONT_BI:
1.194 schwarze 827: h->metaf = print_otag(h, TAG_B, "");
828: print_otag(h, TAG_I, "");
1.152 schwarze 829: break;
830: default:
1.197 schwarze 831: print_indent(h);
1.152 schwarze 832: break;
833: }
1.122 kristaps 834:
1.104 kristaps 835: assert(word);
1.195 schwarze 836: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 837: if ( ! (h->flags & HTML_NONOSPACE))
838: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 839: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 840: } else
1.183 schwarze 841: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 842:
843: if (h->metaf) {
844: print_tagq(h, h->metaf);
845: h->metaf = NULL;
846: }
1.113 schwarze 847:
848: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 849: }
1.30 kristaps 850:
1.51 kristaps 851: void
1.30 kristaps 852: print_tagq(struct html *h, const struct tag *until)
853: {
854: struct tag *tag;
855:
1.204 schwarze 856: while ((tag = h->tag) != NULL) {
1.184 schwarze 857: print_ctag(h, tag);
1.30 kristaps 858: if (until && tag == until)
859: return;
860: }
861: }
862:
1.51 kristaps 863: void
1.30 kristaps 864: print_stagq(struct html *h, const struct tag *suntil)
865: {
866: struct tag *tag;
867:
1.204 schwarze 868: while ((tag = h->tag) != NULL) {
1.30 kristaps 869: if (suntil && tag == suntil)
870: return;
1.184 schwarze 871: print_ctag(h, tag);
1.30 kristaps 872: }
873: }
1.171 kristaps 874:
875: void
876: print_paragraph(struct html *h)
877: {
878: struct tag *t;
879:
1.198 schwarze 880: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 881: print_tagq(h, t);
882: }
883:
1.197 schwarze 884:
885: /***********************************************************************
886: * Low level output functions.
887: * They implement line breaking using a short static buffer.
888: ***********************************************************************/
889:
890: /*
891: * Buffer one HTML output byte.
892: * If the buffer is full, flush and deactivate it and start a new line.
893: * If the buffer is inactive, print directly.
894: */
895: static void
896: print_byte(struct html *h, char c)
897: {
898: if ((h->flags & HTML_BUFFER) == 0) {
899: putchar(c);
900: h->col++;
901: return;
902: }
903:
904: if (h->col + h->bufcol < sizeof(h->buf)) {
905: h->buf[h->bufcol++] = c;
906: return;
907: }
908:
909: putchar('\n');
910: h->col = 0;
911: print_indent(h);
912: putchar(' ');
913: putchar(' ');
914: fwrite(h->buf, h->bufcol, 1, stdout);
915: putchar(c);
916: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
917: h->bufcol = 0;
918: h->flags &= ~HTML_BUFFER;
919: }
920:
1.196 schwarze 921: /*
922: * If something was printed on the current output line, end it.
1.197 schwarze 923: * Not to be called right after print_indent().
1.196 schwarze 924: */
1.202 schwarze 925: void
1.197 schwarze 926: print_endline(struct html *h)
1.196 schwarze 927: {
1.197 schwarze 928: if (h->col == 0)
1.196 schwarze 929: return;
930:
1.197 schwarze 931: if (h->bufcol) {
932: putchar(' ');
933: fwrite(h->buf, h->bufcol, 1, stdout);
934: h->bufcol = 0;
935: }
1.196 schwarze 936: putchar('\n');
1.197 schwarze 937: h->col = 0;
938: h->flags |= HTML_NOSPACE;
939: h->flags &= ~HTML_BUFFER;
940: }
941:
942: /*
943: * Flush the HTML output buffer.
944: * If it is inactive, activate it.
945: */
946: static void
947: print_endword(struct html *h)
948: {
949: if (h->noindent) {
950: print_byte(h, ' ');
951: return;
952: }
953:
954: if ((h->flags & HTML_BUFFER) == 0) {
955: h->col++;
956: h->flags |= HTML_BUFFER;
957: } else if (h->bufcol) {
958: putchar(' ');
959: fwrite(h->buf, h->bufcol, 1, stdout);
960: h->col += h->bufcol + 1;
961: }
962: h->bufcol = 0;
1.196 schwarze 963: }
964:
965: /*
966: * If at the beginning of a new output line,
967: * perform indentation and mark the line as containing output.
968: * Make sure to really produce some output right afterwards,
969: * but do not use print_otag() for producing it.
970: */
971: static void
1.197 schwarze 972: print_indent(struct html *h)
1.196 schwarze 973: {
1.197 schwarze 974: size_t i;
1.196 schwarze 975:
1.197 schwarze 976: if (h->col)
1.196 schwarze 977: return;
978:
1.197 schwarze 979: if (h->noindent == 0) {
980: h->col = h->indent * 2;
981: for (i = 0; i < h->col; i++)
1.196 schwarze 982: putchar(' ');
1.197 schwarze 983: }
984: h->flags &= ~HTML_NOSPACE;
985: }
986:
987: /*
988: * Print or buffer some characters
989: * depending on the current HTML output buffer state.
990: */
991: static void
992: print_word(struct html *h, const char *cp)
993: {
994: while (*cp != '\0')
995: print_byte(h, *cp++);
1.196 schwarze 996: }
1.194 schwarze 997:
998: /*
999: * Calculate the scaling unit passed in a `-width' argument. This uses
1000: * either a native scaling unit (e.g., 1i, 2m) or the string length of
1001: * the value.
1002: */
1003: static void
1004: a2width(const char *p, struct roffsu *su)
1005: {
1.213 schwarze 1006: const char *end;
1007:
1008: end = a2roffsu(p, su, SCALE_MAX);
1009: if (end == NULL || *end != '\0') {
1.194 schwarze 1010: su->unit = SCALE_EN;
1011: su->scale = html_strlen(p);
1012: } else if (su->scale < 0.0)
1013: su->scale = 0.0;
1.68 kristaps 1014: }
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