Annotation of mandoc/html.c, Revision 1.224
1.224 ! schwarze 1: /* $Id: html.c,v 1.223 2018/05/08 17:52:55 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; }");
1.224 ! schwarze 189: print_endline(h);
! 190: print_text(h, "dl.Bl-diag ");
! 191: print_byte(h, '>');
! 192: print_text(h, " dt { font-weight: bold; }");
1.223 schwarze 193: print_endline(h);
194: print_text(h, "code.Nm, code.Fl, code.Cm, code.Ic, "
195: "code.In, code.Fd, code.Fn,");
196: print_endline(h);
197: print_text(h, "code.Cd { font-weight: bold; "
198: "font-family: inherit; }");
1.165 kristaps 199: print_tagq(h, t);
1.4 kristaps 200: }
201:
1.126 schwarze 202: static void
1.132 kristaps 203: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 204: {
1.90 kristaps 205: enum htmlfont font;
1.88 kristaps 206:
207: switch (deco) {
1.156 schwarze 208: case ESCAPE_FONTPREV:
1.90 kristaps 209: font = h->metal;
1.88 kristaps 210: break;
1.156 schwarze 211: case ESCAPE_FONTITALIC:
1.90 kristaps 212: font = HTMLFONT_ITALIC;
213: break;
1.156 schwarze 214: case ESCAPE_FONTBOLD:
1.90 kristaps 215: font = HTMLFONT_BOLD;
1.88 kristaps 216: break;
1.156 schwarze 217: case ESCAPE_FONTBI:
1.152 schwarze 218: font = HTMLFONT_BI;
219: break;
1.156 schwarze 220: case ESCAPE_FONT:
221: case ESCAPE_FONTROMAN:
1.90 kristaps 222: font = HTMLFONT_NONE;
1.88 kristaps 223: break;
224: default:
225: abort();
226: }
227:
1.122 kristaps 228: if (h->metaf) {
229: print_tagq(h, h->metaf);
230: h->metaf = NULL;
231: }
232:
233: h->metal = h->metac;
234: h->metac = font;
235:
1.152 schwarze 236: switch (font) {
1.156 schwarze 237: case HTMLFONT_ITALIC:
1.194 schwarze 238: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 239: break;
1.156 schwarze 240: case HTMLFONT_BOLD:
1.194 schwarze 241: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 242: break;
1.156 schwarze 243: case HTMLFONT_BI:
1.194 schwarze 244: h->metaf = print_otag(h, TAG_B, "");
245: print_otag(h, TAG_I, "");
1.152 schwarze 246: break;
247: default:
248: break;
249: }
1.210 schwarze 250: }
251:
252: char *
253: html_make_id(const struct roff_node *n)
254: {
255: const struct roff_node *nch;
256: char *buf, *cp;
257:
258: for (nch = n->child; nch != NULL; nch = nch->next)
259: if (nch->type != ROFFT_TEXT)
260: return NULL;
261:
262: buf = NULL;
263: deroff(&buf, n);
1.220 schwarze 264: if (buf == NULL)
265: return NULL;
1.210 schwarze 266:
267: /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */
268:
269: for (cp = buf; *cp != '\0'; cp++)
270: if (*cp == ' ')
271: *cp = '_';
272:
273: return buf;
1.88 kristaps 274: }
275:
1.138 kristaps 276: int
277: html_strlen(const char *cp)
278: {
1.151 schwarze 279: size_t rsz;
280: int skip, sz;
1.138 kristaps 281:
282: /*
283: * Account for escaped sequences within string length
284: * calculations. This follows the logic in term_strlen() as we
285: * must calculate the width of produced strings.
286: * Assume that characters are always width of "1". This is
287: * hacky, but it gets the job done for approximation of widths.
288: */
289:
290: sz = 0;
1.151 schwarze 291: skip = 0;
292: while (1) {
293: rsz = strcspn(cp, "\\");
294: if (rsz) {
295: cp += rsz;
296: if (skip) {
297: skip = 0;
298: rsz--;
299: }
300: sz += rsz;
301: }
302: if ('\0' == *cp)
303: break;
304: cp++;
305: switch (mandoc_escape(&cp, NULL, NULL)) {
1.156 schwarze 306: case ESCAPE_ERROR:
1.188 schwarze 307: return sz;
1.156 schwarze 308: case ESCAPE_UNICODE:
309: case ESCAPE_NUMBERED:
310: case ESCAPE_SPECIAL:
1.185 schwarze 311: case ESCAPE_OVERSTRIKE:
1.151 schwarze 312: if (skip)
313: skip = 0;
314: else
315: sz++;
316: break;
1.156 schwarze 317: case ESCAPE_SKIPCHAR:
1.151 schwarze 318: skip = 1;
1.138 kristaps 319: break;
320: default:
321: break;
322: }
323: }
1.188 schwarze 324: return sz;
1.138 kristaps 325: }
1.88 kristaps 326:
1.85 kristaps 327: static int
1.197 schwarze 328: print_escape(struct html *h, char c)
1.159 schwarze 329: {
330:
331: switch (c) {
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 '"':
1.197 schwarze 342: print_word(h, """);
1.159 schwarze 343: break;
344: case ASCII_NBRSP:
1.197 schwarze 345: print_word(h, " ");
1.159 schwarze 346: break;
347: case ASCII_HYPH:
1.197 schwarze 348: print_byte(h, '-');
1.189 schwarze 349: break;
1.159 schwarze 350: case ASCII_BREAK:
351: break;
352: default:
1.188 schwarze 353: return 0;
1.159 schwarze 354: }
1.188 schwarze 355: return 1;
1.159 schwarze 356: }
357:
358: static int
1.195 schwarze 359: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 360: {
1.197 schwarze 361: char numbuf[16];
1.214 schwarze 362: struct tag *t;
363: const char *seq;
1.77 kristaps 364: size_t sz;
1.214 schwarze 365: int c, len, breakline, nospace;
1.132 kristaps 366: enum mandoc_esc esc;
1.214 schwarze 367: static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
1.154 schwarze 368: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14 kristaps 369:
1.195 schwarze 370: if (pend == NULL)
371: pend = strchr(p, '\0');
372:
1.214 schwarze 373: breakline = 0;
1.85 kristaps 374: nospace = 0;
375:
1.195 schwarze 376: while (p < pend) {
1.151 schwarze 377: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
378: h->flags &= ~HTML_SKIPCHAR;
379: p++;
380: continue;
381: }
382:
1.197 schwarze 383: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
1.214 schwarze 384: print_byte(h, *p);
385:
386: if (breakline &&
387: (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
388: t = print_otag(h, TAG_DIV, "");
389: print_text(h, "\\~");
390: print_tagq(h, t);
391: breakline = 0;
392: while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
393: p++;
394: continue;
395: }
1.77 kristaps 396:
1.195 schwarze 397: if (p >= pend)
1.132 kristaps 398: break;
399:
1.214 schwarze 400: if (*p == ' ') {
401: print_endword(h);
402: p++;
403: continue;
404: }
405:
1.197 schwarze 406: if (print_escape(h, *p++))
1.154 schwarze 407: continue;
1.77 kristaps 408:
1.132 kristaps 409: esc = mandoc_escape(&p, &seq, &len);
410: if (ESCAPE_ERROR == esc)
411: break;
1.82 kristaps 412:
1.132 kristaps 413: switch (esc) {
1.156 schwarze 414: case ESCAPE_FONT:
415: case ESCAPE_FONTPREV:
416: case ESCAPE_FONTBOLD:
417: case ESCAPE_FONTITALIC:
418: case ESCAPE_FONTBI:
419: case ESCAPE_FONTROMAN:
1.151 schwarze 420: if (0 == norecurse)
421: print_metaf(h, esc);
422: continue;
1.156 schwarze 423: case ESCAPE_SKIPCHAR:
1.151 schwarze 424: h->flags |= HTML_SKIPCHAR;
425: continue;
426: default:
427: break;
428: }
429:
430: if (h->flags & HTML_SKIPCHAR) {
431: h->flags &= ~HTML_SKIPCHAR;
432: continue;
433: }
434:
435: switch (esc) {
1.156 schwarze 436: case ESCAPE_UNICODE:
1.159 schwarze 437: /* Skip past "u" header. */
1.144 kristaps 438: c = mchars_num2uc(seq + 1, len - 1);
439: break;
1.156 schwarze 440: case ESCAPE_NUMBERED:
1.141 kristaps 441: c = mchars_num2char(seq, len);
1.181 schwarze 442: if (c < 0)
443: continue;
1.82 kristaps 444: break;
1.156 schwarze 445: case ESCAPE_SPECIAL:
1.191 schwarze 446: c = mchars_spec2cp(seq, len);
1.181 schwarze 447: if (c <= 0)
448: continue;
1.132 kristaps 449: break;
1.214 schwarze 450: case ESCAPE_BREAK:
451: breakline = 1;
452: continue;
1.156 schwarze 453: case ESCAPE_NOSPACE:
1.132 kristaps 454: if ('\0' == *p)
455: nospace = 1;
1.179 schwarze 456: continue;
1.185 schwarze 457: case ESCAPE_OVERSTRIKE:
458: if (len == 0)
459: continue;
460: c = seq[len - 1];
461: break;
1.82 kristaps 462: default:
1.179 schwarze 463: continue;
1.82 kristaps 464: }
1.181 schwarze 465: if ((c < 0x20 && c != 0x09) ||
466: (c > 0x7E && c < 0xA0))
1.179 schwarze 467: c = 0xFFFD;
1.197 schwarze 468: if (c > 0x7E) {
1.216 schwarze 469: (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197 schwarze 470: print_word(h, numbuf);
471: } else if (print_escape(h, c) == 0)
472: print_byte(h, c);
1.32 kristaps 473: }
1.85 kristaps 474:
1.188 schwarze 475: return nospace;
1.14 kristaps 476: }
477:
1.94 kristaps 478: static void
1.195 schwarze 479: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 480: {
1.195 schwarze 481: const char *p, *pp;
482:
483: pp = man ? h->base_man : h->base_includes;
484: while ((p = strchr(pp, '%')) != NULL) {
485: print_encode(h, pp, p, 1);
486: if (man && p[1] == 'S') {
487: if (sec == NULL)
1.197 schwarze 488: print_byte(h, '1');
1.195 schwarze 489: else
490: print_encode(h, sec, NULL, 1);
491: } else if ((man && p[1] == 'N') ||
492: (man == 0 && p[1] == 'I'))
493: print_encode(h, name, NULL, 1);
494: else
495: print_encode(h, p, p + 2, 1);
496: pp = p + 2;
497: }
498: if (*pp != '\0')
499: print_encode(h, pp, NULL, 1);
1.94 kristaps 500: }
501:
1.51 kristaps 502: struct tag *
1.194 schwarze 503: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 504: {
1.194 schwarze 505: va_list ap;
506: struct roffsu mysu, *su;
1.197 schwarze 507: char numbuf[16];
1.30 kristaps 508: struct tag *t;
1.195 schwarze 509: const char *attr;
1.203 schwarze 510: char *arg1, *arg2;
1.195 schwarze 511: double v;
1.196 schwarze 512: int i, have_style, tflags;
513:
514: tflags = htmltags[tag].flags;
1.30 kristaps 515:
1.204 schwarze 516: /* Push this tag onto the stack of open scopes. */
1.94 kristaps 517:
1.196 schwarze 518: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 519: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 520: t->tag = tag;
1.204 schwarze 521: t->next = h->tag;
522: h->tag = t;
1.30 kristaps 523: } else
524: t = NULL;
1.29 kristaps 525:
1.196 schwarze 526: if (tflags & HTML_NLBEFORE)
1.197 schwarze 527: print_endline(h);
528: if (h->col == 0)
529: print_indent(h);
1.196 schwarze 530: else if ((h->flags & HTML_NOSPACE) == 0) {
531: if (h->flags & HTML_KEEP)
1.216 schwarze 532: print_word(h, " ");
1.196 schwarze 533: else {
534: if (h->flags & HTML_PREKEEP)
535: h->flags |= HTML_KEEP;
1.197 schwarze 536: print_endword(h);
1.105 kristaps 537: }
1.196 schwarze 538: }
1.29 kristaps 539:
1.109 kristaps 540: if ( ! (h->flags & HTML_NONOSPACE))
541: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 542: else
543: h->flags |= HTML_NOSPACE;
1.109 kristaps 544:
1.94 kristaps 545: /* Print out the tag name and attributes. */
546:
1.197 schwarze 547: print_byte(h, '<');
548: print_word(h, htmltags[tag].name);
1.194 schwarze 549:
550: va_start(ap, fmt);
551:
552: have_style = 0;
553: while (*fmt != '\0') {
554: if (*fmt == 's') {
555: have_style = 1;
556: fmt++;
557: break;
558: }
1.203 schwarze 559:
560: /* Parse a non-style attribute and its arguments. */
561:
562: arg1 = va_arg(ap, char *);
1.194 schwarze 563: switch (*fmt++) {
564: case 'c':
1.195 schwarze 565: attr = "class";
1.194 schwarze 566: break;
567: case 'h':
1.195 schwarze 568: attr = "href";
1.194 schwarze 569: break;
570: case 'i':
1.195 schwarze 571: attr = "id";
1.194 schwarze 572: break;
573: case '?':
1.203 schwarze 574: attr = arg1;
575: arg1 = va_arg(ap, char *);
1.194 schwarze 576: break;
577: default:
578: abort();
579: }
1.203 schwarze 580: arg2 = NULL;
581: if (*fmt == 'M')
582: arg2 = va_arg(ap, char *);
583: if (arg1 == NULL)
584: continue;
585:
586: /* Print the non-style attributes. */
587:
1.197 schwarze 588: print_byte(h, ' ');
589: print_word(h, attr);
590: print_byte(h, '=');
591: print_byte(h, '"');
1.195 schwarze 592: switch (*fmt) {
1.208 schwarze 593: case 'I':
594: print_href(h, arg1, NULL, 0);
595: fmt++;
596: break;
1.195 schwarze 597: case 'M':
1.203 schwarze 598: print_href(h, arg1, arg2, 1);
1.195 schwarze 599: fmt++;
600: break;
1.208 schwarze 601: case 'R':
602: print_byte(h, '#');
603: print_encode(h, arg1, NULL, 1);
1.195 schwarze 604: fmt++;
605: break;
1.208 schwarze 606: case 'T':
607: print_encode(h, arg1, NULL, 1);
608: print_word(h, "\" title=\"");
609: print_encode(h, arg1, NULL, 1);
1.195 schwarze 610: fmt++;
1.208 schwarze 611: break;
1.195 schwarze 612: default:
1.203 schwarze 613: print_encode(h, arg1, NULL, 1);
1.195 schwarze 614: break;
615: }
1.197 schwarze 616: print_byte(h, '"');
1.194 schwarze 617: }
618:
619: /* Print out styles. */
620:
621: while (*fmt != '\0') {
1.203 schwarze 622: arg1 = NULL;
623: su = NULL;
1.194 schwarze 624:
625: /* First letter: input argument type. */
626:
627: switch (*fmt++) {
628: case 'h':
629: i = va_arg(ap, int);
1.203 schwarze 630: su = &mysu;
1.194 schwarze 631: SCALE_HS_INIT(su, i);
632: break;
633: case 's':
1.203 schwarze 634: arg1 = va_arg(ap, char *);
1.194 schwarze 635: break;
636: case 'u':
637: su = va_arg(ap, struct roffsu *);
638: break;
639: case 'w':
1.219 schwarze 640: if ((arg2 = va_arg(ap, char *)) != NULL) {
641: su = &mysu;
642: a2width(arg2, su);
643: }
644: if (*fmt == '*') {
645: if (su != NULL && su->unit == SCALE_EN &&
646: su->scale > 5.9 && su->scale < 6.1)
647: su = NULL;
648: fmt++;
1.218 schwarze 649: }
1.211 schwarze 650: if (*fmt == '+') {
1.219 schwarze 651: if (su != NULL) {
652: /* Make even bold text fit. */
653: su->scale *= 1.2;
654: /* Add padding. */
655: su->scale += 3.0;
656: }
1.211 schwarze 657: fmt++;
658: }
659: if (*fmt == '-') {
1.219 schwarze 660: if (su != NULL)
661: su->scale *= -1.0;
1.211 schwarze 662: fmt++;
663: }
1.194 schwarze 664: break;
665: default:
666: abort();
667: }
668:
669: /* Second letter: style name. */
670:
671: switch (*fmt++) {
672: case 'h':
1.195 schwarze 673: attr = "height";
1.194 schwarze 674: break;
675: case 'i':
1.195 schwarze 676: attr = "text-indent";
1.194 schwarze 677: break;
678: case 'l':
1.195 schwarze 679: attr = "margin-left";
1.194 schwarze 680: break;
681: case 'w':
1.195 schwarze 682: attr = "width";
1.194 schwarze 683: break;
684: case 'W':
1.195 schwarze 685: attr = "min-width";
1.194 schwarze 686: break;
687: case '?':
1.203 schwarze 688: attr = arg1;
689: arg1 = va_arg(ap, char *);
690: break;
1.194 schwarze 691: default:
692: abort();
693: }
1.203 schwarze 694: if (su == NULL && arg1 == NULL)
695: continue;
696:
697: if (have_style == 1)
698: print_word(h, " style=\"");
699: else
700: print_byte(h, ' ');
1.197 schwarze 701: print_word(h, attr);
702: print_byte(h, ':');
703: print_byte(h, ' ');
1.203 schwarze 704: if (su != NULL) {
705: v = su->scale;
706: if (su->unit == SCALE_MM && (v /= 100.0) == 0.0)
707: v = 1.0;
708: else if (su->unit == SCALE_BU)
709: v /= 24.0;
710: (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v);
711: print_word(h, numbuf);
712: print_word(h, roffscales[su->unit]);
713: } else
714: print_word(h, arg1);
1.197 schwarze 715: print_byte(h, ';');
1.203 schwarze 716: have_style = 2;
1.194 schwarze 717: }
1.203 schwarze 718: if (have_style == 2)
1.197 schwarze 719: print_byte(h, '"');
1.194 schwarze 720:
721: va_end(ap);
1.94 kristaps 722:
1.172 kristaps 723: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 724:
1.93 kristaps 725: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 726: print_byte(h, '/');
1.93 kristaps 727:
1.197 schwarze 728: print_byte(h, '>');
1.14 kristaps 729:
1.196 schwarze 730: if (tflags & HTML_NLBEGIN)
1.197 schwarze 731: print_endline(h);
1.196 schwarze 732: else
733: h->flags |= HTML_NOSPACE;
1.117 kristaps 734:
1.196 schwarze 735: if (tflags & HTML_INDENT)
736: h->indent++;
737: if (tflags & HTML_NOINDENT)
738: h->noindent++;
1.117 kristaps 739:
1.188 schwarze 740: return t;
1.14 kristaps 741: }
742:
1.29 kristaps 743: static void
1.184 schwarze 744: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 745: {
1.196 schwarze 746: int tflags;
1.156 schwarze 747:
1.184 schwarze 748: /*
749: * Remember to close out and nullify the current
750: * meta-font and table, if applicable.
751: */
752: if (tag == h->metaf)
753: h->metaf = NULL;
754: if (tag == h->tblt)
755: h->tblt = NULL;
756:
1.196 schwarze 757: tflags = htmltags[tag->tag].flags;
758:
759: if (tflags & HTML_INDENT)
760: h->indent--;
761: if (tflags & HTML_NOINDENT)
762: h->noindent--;
763: if (tflags & HTML_NLEND)
1.197 schwarze 764: print_endline(h);
765: print_indent(h);
766: print_byte(h, '<');
767: print_byte(h, '/');
768: print_word(h, htmltags[tag->tag].name);
769: print_byte(h, '>');
1.196 schwarze 770: if (tflags & HTML_NLAFTER)
1.197 schwarze 771: print_endline(h);
1.184 schwarze 772:
1.204 schwarze 773: h->tag = tag->next;
1.184 schwarze 774: free(tag);
1.14 kristaps 775: }
776:
1.51 kristaps 777: void
1.93 kristaps 778: print_gen_decls(struct html *h)
1.1 kristaps 779: {
1.197 schwarze 780: print_word(h, "<!DOCTYPE html>");
781: print_endline(h);
1.221 schwarze 782: }
783:
784: void
785: print_gen_comment(struct html *h, struct roff_node *n)
786: {
787: int wantblank;
788:
789: print_word(h, "<!-- This is an automatically generated file."
790: " Do not edit.");
791: h->indent = 1;
792: wantblank = 0;
793: while (n != NULL && n->type == ROFFT_COMMENT) {
794: if (strstr(n->string, "-->") == NULL &&
795: (wantblank || *n->string != '\0')) {
796: print_endline(h);
797: print_indent(h);
798: print_word(h, n->string);
799: wantblank = *n->string != '\0';
800: }
801: n = n->next;
802: }
803: if (wantblank)
804: print_endline(h);
805: print_word(h, " -->");
806: print_endline(h);
807: h->indent = 0;
1.1 kristaps 808: }
809:
1.51 kristaps 810: void
1.104 kristaps 811: print_text(struct html *h, const char *word)
1.1 kristaps 812: {
1.197 schwarze 813: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 814: if ( ! (HTML_KEEP & h->flags)) {
815: if (HTML_PREKEEP & h->flags)
816: h->flags |= HTML_KEEP;
1.197 schwarze 817: print_endword(h);
1.105 kristaps 818: } else
1.216 schwarze 819: print_word(h, " ");
1.105 kristaps 820: }
1.30 kristaps 821:
1.122 kristaps 822: assert(NULL == h->metaf);
1.152 schwarze 823: switch (h->metac) {
1.156 schwarze 824: case HTMLFONT_ITALIC:
1.194 schwarze 825: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 826: break;
1.156 schwarze 827: case HTMLFONT_BOLD:
1.194 schwarze 828: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 829: break;
1.156 schwarze 830: case HTMLFONT_BI:
1.194 schwarze 831: h->metaf = print_otag(h, TAG_B, "");
832: print_otag(h, TAG_I, "");
1.152 schwarze 833: break;
834: default:
1.197 schwarze 835: print_indent(h);
1.152 schwarze 836: break;
837: }
1.122 kristaps 838:
1.104 kristaps 839: assert(word);
1.195 schwarze 840: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 841: if ( ! (h->flags & HTML_NONOSPACE))
842: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 843: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 844: } else
1.183 schwarze 845: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 846:
847: if (h->metaf) {
848: print_tagq(h, h->metaf);
849: h->metaf = NULL;
850: }
1.113 schwarze 851:
852: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 853: }
1.30 kristaps 854:
1.51 kristaps 855: void
1.30 kristaps 856: print_tagq(struct html *h, const struct tag *until)
857: {
858: struct tag *tag;
859:
1.204 schwarze 860: while ((tag = h->tag) != NULL) {
1.184 schwarze 861: print_ctag(h, tag);
1.30 kristaps 862: if (until && tag == until)
863: return;
864: }
865: }
866:
1.51 kristaps 867: void
1.30 kristaps 868: print_stagq(struct html *h, const struct tag *suntil)
869: {
870: struct tag *tag;
871:
1.204 schwarze 872: while ((tag = h->tag) != NULL) {
1.30 kristaps 873: if (suntil && tag == suntil)
874: return;
1.184 schwarze 875: print_ctag(h, tag);
1.30 kristaps 876: }
877: }
1.171 kristaps 878:
879: void
880: print_paragraph(struct html *h)
881: {
882: struct tag *t;
883:
1.198 schwarze 884: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 885: print_tagq(h, t);
886: }
887:
1.197 schwarze 888:
889: /***********************************************************************
890: * Low level output functions.
891: * They implement line breaking using a short static buffer.
892: ***********************************************************************/
893:
894: /*
895: * Buffer one HTML output byte.
896: * If the buffer is full, flush and deactivate it and start a new line.
897: * If the buffer is inactive, print directly.
898: */
899: static void
900: print_byte(struct html *h, char c)
901: {
902: if ((h->flags & HTML_BUFFER) == 0) {
903: putchar(c);
904: h->col++;
905: return;
906: }
907:
908: if (h->col + h->bufcol < sizeof(h->buf)) {
909: h->buf[h->bufcol++] = c;
910: return;
911: }
912:
913: putchar('\n');
914: h->col = 0;
915: print_indent(h);
916: putchar(' ');
917: putchar(' ');
918: fwrite(h->buf, h->bufcol, 1, stdout);
919: putchar(c);
920: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
921: h->bufcol = 0;
922: h->flags &= ~HTML_BUFFER;
923: }
924:
1.196 schwarze 925: /*
926: * If something was printed on the current output line, end it.
1.197 schwarze 927: * Not to be called right after print_indent().
1.196 schwarze 928: */
1.202 schwarze 929: void
1.197 schwarze 930: print_endline(struct html *h)
1.196 schwarze 931: {
1.197 schwarze 932: if (h->col == 0)
1.196 schwarze 933: return;
934:
1.197 schwarze 935: if (h->bufcol) {
936: putchar(' ');
937: fwrite(h->buf, h->bufcol, 1, stdout);
938: h->bufcol = 0;
939: }
1.196 schwarze 940: putchar('\n');
1.197 schwarze 941: h->col = 0;
942: h->flags |= HTML_NOSPACE;
943: h->flags &= ~HTML_BUFFER;
944: }
945:
946: /*
947: * Flush the HTML output buffer.
948: * If it is inactive, activate it.
949: */
950: static void
951: print_endword(struct html *h)
952: {
953: if (h->noindent) {
954: print_byte(h, ' ');
955: return;
956: }
957:
958: if ((h->flags & HTML_BUFFER) == 0) {
959: h->col++;
960: h->flags |= HTML_BUFFER;
961: } else if (h->bufcol) {
962: putchar(' ');
963: fwrite(h->buf, h->bufcol, 1, stdout);
964: h->col += h->bufcol + 1;
965: }
966: h->bufcol = 0;
1.196 schwarze 967: }
968:
969: /*
970: * If at the beginning of a new output line,
971: * perform indentation and mark the line as containing output.
972: * Make sure to really produce some output right afterwards,
973: * but do not use print_otag() for producing it.
974: */
975: static void
1.197 schwarze 976: print_indent(struct html *h)
1.196 schwarze 977: {
1.197 schwarze 978: size_t i;
1.196 schwarze 979:
1.197 schwarze 980: if (h->col)
1.196 schwarze 981: return;
982:
1.197 schwarze 983: if (h->noindent == 0) {
984: h->col = h->indent * 2;
985: for (i = 0; i < h->col; i++)
1.196 schwarze 986: putchar(' ');
1.197 schwarze 987: }
988: h->flags &= ~HTML_NOSPACE;
989: }
990:
991: /*
992: * Print or buffer some characters
993: * depending on the current HTML output buffer state.
994: */
995: static void
996: print_word(struct html *h, const char *cp)
997: {
998: while (*cp != '\0')
999: print_byte(h, *cp++);
1.196 schwarze 1000: }
1.194 schwarze 1001:
1002: /*
1003: * Calculate the scaling unit passed in a `-width' argument. This uses
1004: * either a native scaling unit (e.g., 1i, 2m) or the string length of
1005: * the value.
1006: */
1007: static void
1008: a2width(const char *p, struct roffsu *su)
1009: {
1.213 schwarze 1010: const char *end;
1011:
1012: end = a2roffsu(p, su, SCALE_MAX);
1013: if (end == NULL || *end != '\0') {
1.194 schwarze 1014: su->unit = SCALE_EN;
1015: su->scale = html_strlen(p);
1016: } else if (su->scale < 0.0)
1017: su->scale = 0.0;
1.68 kristaps 1018: }
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