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1.21 ! schwarze 1: /* $Id: html.c,v 1.20 2010/12/25 13:23:03 schwarze Exp $ */
1.1 schwarze 2: /*
1.12 schwarze 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 schwarze 4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #include <sys/types.h>
18:
19: #include <assert.h>
1.3 schwarze 20: #include <ctype.h>
1.4 schwarze 21: #include <stdarg.h>
1.1 schwarze 22: #include <stdio.h>
23: #include <stdint.h>
24: #include <stdlib.h>
25: #include <string.h>
26: #include <unistd.h>
27:
1.9 schwarze 28: #include "mandoc.h"
1.1 schwarze 29: #include "out.h"
30: #include "chars.h"
31: #include "html.h"
32: #include "main.h"
33:
34: struct htmldata {
35: const char *name;
36: int flags;
37: #define HTML_CLRLINE (1 << 0)
38: #define HTML_NOSTACK (1 << 1)
1.6 schwarze 39: #define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */
1.1 schwarze 40: };
41:
42: static const struct htmldata htmltags[TAG_MAX] = {
43: {"html", HTML_CLRLINE}, /* TAG_HTML */
44: {"head", HTML_CLRLINE}, /* TAG_HEAD */
45: {"body", HTML_CLRLINE}, /* TAG_BODY */
1.6 schwarze 46: {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */
1.1 schwarze 47: {"title", HTML_CLRLINE}, /* TAG_TITLE */
48: {"div", HTML_CLRLINE}, /* TAG_DIV */
49: {"h1", 0}, /* TAG_H1 */
50: {"h2", 0}, /* TAG_H2 */
51: {"span", 0}, /* TAG_SPAN */
1.8 schwarze 52: {"link", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */
1.6 schwarze 53: {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
1.1 schwarze 54: {"a", 0}, /* TAG_A */
55: {"table", HTML_CLRLINE}, /* TAG_TABLE */
1.18 schwarze 56: {"tbody", HTML_CLRLINE}, /* TAG_TBODY */
1.6 schwarze 57: {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
1.1 schwarze 58: {"tr", HTML_CLRLINE}, /* TAG_TR */
59: {"td", HTML_CLRLINE}, /* TAG_TD */
60: {"li", HTML_CLRLINE}, /* TAG_LI */
61: {"ul", HTML_CLRLINE}, /* TAG_UL */
62: {"ol", HTML_CLRLINE}, /* TAG_OL */
1.18 schwarze 63: {"dl", HTML_CLRLINE}, /* TAG_DL */
64: {"dt", HTML_CLRLINE}, /* TAG_DT */
65: {"dd", HTML_CLRLINE}, /* TAG_DD */
66: {"blockquote", HTML_CLRLINE}, /* TAG_BLOCKQUOTE */
67: {"p", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_P */
68: {"pre", HTML_CLRLINE }, /* TAG_PRE */
1.19 schwarze 69: {"b", 0 }, /* TAG_B */
70: {"i", 0 }, /* TAG_I */
1.20 schwarze 71: {"code", 0 }, /* TAG_CODE */
72: {"small", 0 }, /* TAG_SMALL */
1.5 schwarze 73: };
74:
75: static const char *const htmlattrs[ATTR_MAX] = {
1.19 schwarze 76: "http-equiv", /* ATTR_HTTPEQUIV */
77: "content", /* ATTR_CONTENT */
78: "name", /* ATTR_NAME */
79: "rel", /* ATTR_REL */
80: "href", /* ATTR_HREF */
81: "type", /* ATTR_TYPE */
82: "media", /* ATTR_MEDIA */
83: "class", /* ATTR_CLASS */
84: "style", /* ATTR_STYLE */
85: "width", /* ATTR_WIDTH */
86: "id", /* ATTR_ID */
87: "summary", /* ATTR_SUMMARY */
88: "align", /* ATTR_ALIGN */
1.1 schwarze 89: };
90:
1.13 schwarze 91: static void print_spec(struct html *, enum roffdeco,
92: const char *, size_t);
1.5 schwarze 93: static void print_res(struct html *, const char *, size_t);
94: static void print_ctag(struct html *, enum htmltag);
1.6 schwarze 95: static void print_doctype(struct html *);
96: static void print_xmltype(struct html *);
1.5 schwarze 97: static int print_encode(struct html *, const char *, int);
98: static void print_metaf(struct html *, enum roffdeco);
1.6 schwarze 99: static void print_attr(struct html *,
100: const char *, const char *);
101: static void *ml_alloc(char *, enum htmltype);
1.5 schwarze 102:
103:
1.6 schwarze 104: static void *
105: ml_alloc(char *outopts, enum htmltype type)
1.1 schwarze 106: {
107: struct html *h;
108: const char *toks[4];
109: char *v;
110:
111: toks[0] = "style";
112: toks[1] = "man";
113: toks[2] = "includes";
114: toks[3] = NULL;
115:
1.3 schwarze 116: h = calloc(1, sizeof(struct html));
117: if (NULL == h) {
118: perror(NULL);
1.16 schwarze 119: exit((int)MANDOCLEVEL_SYSERR);
1.3 schwarze 120: }
1.1 schwarze 121:
1.6 schwarze 122: h->type = type;
1.2 schwarze 123: h->tags.head = NULL;
1.3 schwarze 124: h->symtab = chars_init(CHARS_HTML);
1.1 schwarze 125:
126: while (outopts && *outopts)
127: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
128: case (0):
129: h->style = v;
130: break;
131: case (1):
132: h->base_man = v;
133: break;
134: case (2):
135: h->base_includes = v;
136: break;
137: default:
138: break;
139: }
140:
141: return(h);
142: }
143:
1.6 schwarze 144: void *
145: html_alloc(char *outopts)
146: {
147:
148: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
149: }
150:
151:
152: void *
153: xhtml_alloc(char *outopts)
154: {
155:
156: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
157: }
158:
1.1 schwarze 159:
160: void
161: html_free(void *p)
162: {
163: struct tag *tag;
164: struct html *h;
165:
166: h = (struct html *)p;
167:
1.2 schwarze 168: while ((tag = h->tags.head) != NULL) {
169: h->tags.head = tag->next;
1.1 schwarze 170: free(tag);
171: }
172:
173: if (h->symtab)
174: chars_free(h->symtab);
175:
176: free(h);
177: }
178:
179:
180: void
181: print_gen_head(struct html *h)
182: {
183: struct htmlpair tag[4];
184:
185: tag[0].key = ATTR_HTTPEQUIV;
186: tag[0].val = "Content-Type";
187: tag[1].key = ATTR_CONTENT;
188: tag[1].val = "text/html; charset=utf-8";
189: print_otag(h, TAG_META, 2, tag);
190:
191: tag[0].key = ATTR_NAME;
192: tag[0].val = "resource-type";
193: tag[1].key = ATTR_CONTENT;
194: tag[1].val = "document";
195: print_otag(h, TAG_META, 2, tag);
196:
197: if (h->style) {
198: tag[0].key = ATTR_REL;
199: tag[0].val = "stylesheet";
200: tag[1].key = ATTR_HREF;
201: tag[1].val = h->style;
202: tag[2].key = ATTR_TYPE;
203: tag[2].val = "text/css";
204: tag[3].key = ATTR_MEDIA;
205: tag[3].val = "all";
206: print_otag(h, TAG_LINK, 4, tag);
207: }
208: }
209:
210:
211: static void
1.13 schwarze 212: print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
1.1 schwarze 213: {
1.13 schwarze 214: int cp;
1.1 schwarze 215: const char *rhs;
216: size_t sz;
217:
1.13 schwarze 218: if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
219: printf("&#%d;", cp);
220: return;
221: } else if (-1 == cp && DECO_SSPECIAL == d) {
222: fwrite(p, 1, len, stdout);
223: return;
224: } else if (-1 == cp)
225: return;
1.1 schwarze 226:
1.13 schwarze 227: if (NULL != (rhs = chars_spec2str(h->symtab, p, len, &sz)))
228: fwrite(rhs, 1, sz, stdout);
1.1 schwarze 229: }
230:
231:
232: static void
1.5 schwarze 233: print_res(struct html *h, const char *p, size_t len)
1.1 schwarze 234: {
1.13 schwarze 235: int cp;
1.1 schwarze 236: const char *rhs;
237: size_t sz;
238:
1.13 schwarze 239: if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
240: printf("&#%d;", cp);
241: return;
242: } else if (-1 == cp)
243: return;
1.1 schwarze 244:
1.13 schwarze 245: if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
246: fwrite(rhs, 1, sz, stdout);
1.1 schwarze 247: }
248:
249:
1.5 schwarze 250: static void
251: print_metaf(struct html *h, enum roffdeco deco)
252: {
253: enum htmlfont font;
1.1 schwarze 254:
1.5 schwarze 255: switch (deco) {
256: case (DECO_PREVIOUS):
257: font = h->metal;
258: break;
259: case (DECO_ITALIC):
260: font = HTMLFONT_ITALIC;
261: break;
262: case (DECO_BOLD):
263: font = HTMLFONT_BOLD;
264: break;
265: case (DECO_ROMAN):
266: font = HTMLFONT_NONE;
267: break;
268: default:
269: abort();
270: /* NOTREACHED */
1.1 schwarze 271: }
272:
1.20 schwarze 273: if (h->metaf) {
274: print_tagq(h, h->metaf);
275: h->metaf = NULL;
276: }
277:
278: h->metal = h->metac;
279: h->metac = font;
280:
281: if (HTMLFONT_NONE != font)
282: h->metaf = HTMLFONT_BOLD == font ?
283: print_otag(h, TAG_B, 0, NULL) :
284: print_otag(h, TAG_I, 0, NULL);
1.1 schwarze 285: }
286:
287:
1.5 schwarze 288: static int
289: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 290: {
1.4 schwarze 291: size_t sz;
1.5 schwarze 292: int len, nospace;
293: const char *seq;
294: enum roffdeco deco;
1.9 schwarze 295: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.5 schwarze 296:
297: nospace = 0;
1.1 schwarze 298:
299: for (; *p; p++) {
1.9 schwarze 300: sz = strcspn(p, rejs);
1.4 schwarze 301:
302: fwrite(p, 1, sz, stdout);
303: p += /* LINTED */
304: sz;
305:
1.5 schwarze 306: if ('<' == *p) {
307: printf("<");
308: continue;
309: } else if ('>' == *p) {
310: printf(">");
311: continue;
312: } else if ('&' == *p) {
313: printf("&");
1.1 schwarze 314: continue;
1.9 schwarze 315: } else if (ASCII_HYPH == *p) {
316: /*
317: * Note: "soft hyphens" aren't graphically
318: * displayed when not breaking the text; we want
319: * them to be displayed.
320: */
321: /*printf("­");*/
322: putchar('-');
323: continue;
1.4 schwarze 324: } else if ('\0' == *p)
325: break;
326:
1.5 schwarze 327: seq = ++p;
328: len = a2roffdeco(&deco, &seq, &sz);
329:
330: switch (deco) {
331: case (DECO_RESERVED):
332: print_res(h, seq, sz);
333: break;
1.13 schwarze 334: case (DECO_SSPECIAL):
335: /* FALLTHROUGH */
1.5 schwarze 336: case (DECO_SPECIAL):
1.13 schwarze 337: print_spec(h, deco, seq, sz);
1.5 schwarze 338: break;
339: case (DECO_PREVIOUS):
340: /* FALLTHROUGH */
341: case (DECO_BOLD):
342: /* FALLTHROUGH */
343: case (DECO_ITALIC):
344: /* FALLTHROUGH */
345: case (DECO_ROMAN):
346: if (norecurse)
347: break;
348: print_metaf(h, deco);
349: break;
350: default:
351: break;
352: }
353:
354: p += len - 1;
355:
356: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
357: nospace = 1;
1.1 schwarze 358: }
1.5 schwarze 359:
360: return(nospace);
1.1 schwarze 361: }
362:
363:
1.6 schwarze 364: static void
365: print_attr(struct html *h, const char *key, const char *val)
366: {
367: printf(" %s=\"", key);
368: (void)print_encode(h, val, 1);
369: putchar('\"');
370: }
371:
372:
1.1 schwarze 373: struct tag *
374: print_otag(struct html *h, enum htmltag tag,
375: int sz, const struct htmlpair *p)
376: {
377: int i;
378: struct tag *t;
379:
1.6 schwarze 380: /* Push this tags onto the stack of open scopes. */
381:
1.1 schwarze 382: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.3 schwarze 383: t = malloc(sizeof(struct tag));
384: if (NULL == t) {
385: perror(NULL);
1.16 schwarze 386: exit((int)MANDOCLEVEL_SYSERR);
1.3 schwarze 387: }
1.1 schwarze 388: t->tag = tag;
1.2 schwarze 389: t->next = h->tags.head;
390: h->tags.head = t;
1.1 schwarze 391: } else
392: t = NULL;
393:
394: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 395: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
396: /* Manage keeps! */
397: if ( ! (HTML_KEEP & h->flags)) {
398: if (HTML_PREKEEP & h->flags)
399: h->flags |= HTML_KEEP;
400: putchar(' ');
401: } else
402: printf(" ");
403: }
1.1 schwarze 404:
1.13 schwarze 405: if ( ! (h->flags & HTML_NONOSPACE))
406: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 407: else
408: h->flags |= HTML_NOSPACE;
1.13 schwarze 409:
1.6 schwarze 410: /* Print out the tag name and attributes. */
411:
1.1 schwarze 412: printf("<%s", htmltags[tag].name);
1.6 schwarze 413: for (i = 0; i < sz; i++)
414: print_attr(h, htmlattrs[p[i].key], p[i].val);
415:
416: /* Add non-overridable attributes. */
417:
418: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
419: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
420: print_attr(h, "xml:lang", "en");
421: print_attr(h, "lang", "en");
1.1 schwarze 422: }
1.6 schwarze 423:
424: /* Accomodate for XML "well-formed" singleton escaping. */
425:
426: if (HTML_AUTOCLOSE & htmltags[tag].flags)
427: switch (h->type) {
428: case (HTML_XHTML_1_0_STRICT):
429: putchar('/');
430: break;
431: default:
432: break;
433: }
434:
1.4 schwarze 435: putchar('>');
1.1 schwarze 436:
437: h->flags |= HTML_NOSPACE;
1.18 schwarze 438:
439: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
440: putchar('\n');
441:
1.1 schwarze 442: return(t);
443: }
444:
445:
446: static void
447: print_ctag(struct html *h, enum htmltag tag)
448: {
449:
450: printf("</%s>", htmltags[tag].name);
1.3 schwarze 451: if (HTML_CLRLINE & htmltags[tag].flags) {
1.1 schwarze 452: h->flags |= HTML_NOSPACE;
1.4 schwarze 453: putchar('\n');
1.5 schwarze 454: }
1.1 schwarze 455: }
456:
457:
458: void
1.6 schwarze 459: print_gen_decls(struct html *h)
460: {
461:
462: print_xmltype(h);
463: print_doctype(h);
464: }
465:
466:
467: static void
468: print_xmltype(struct html *h)
469: {
470:
1.9 schwarze 471: if (HTML_XHTML_1_0_STRICT == h->type)
1.20 schwarze 472: puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.6 schwarze 473: }
474:
475:
476: static void
477: print_doctype(struct html *h)
1.1 schwarze 478: {
1.6 schwarze 479: const char *doctype;
480: const char *dtd;
481: const char *name;
482:
483: switch (h->type) {
484: case (HTML_HTML_4_01_STRICT):
485: name = "HTML";
486: doctype = "-//W3C//DTD HTML 4.01//EN";
487: dtd = "http://www.w3.org/TR/html4/strict.dtd";
488: break;
489: default:
490: name = "html";
491: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
492: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
493: break;
494: }
495:
496: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
497: name, doctype, dtd);
1.1 schwarze 498: }
499:
500:
501: void
1.12 schwarze 502: print_text(struct html *h, const char *word)
1.1 schwarze 503: {
504:
1.12 schwarze 505: if (word[0] && '\0' == word[1])
506: switch (word[0]) {
1.1 schwarze 507: case('.'):
508: /* FALLTHROUGH */
509: case(','):
510: /* FALLTHROUGH */
511: case(';'):
512: /* FALLTHROUGH */
513: case(':'):
514: /* FALLTHROUGH */
515: case('?'):
516: /* FALLTHROUGH */
517: case('!'):
518: /* FALLTHROUGH */
519: case(')'):
520: /* FALLTHROUGH */
521: case(']'):
522: if ( ! (HTML_IGNDELIM & h->flags))
523: h->flags |= HTML_NOSPACE;
524: break;
525: default:
526: break;
527: }
528:
1.12 schwarze 529: if ( ! (HTML_NOSPACE & h->flags)) {
530: /* Manage keeps! */
531: if ( ! (HTML_KEEP & h->flags)) {
532: if (HTML_PREKEEP & h->flags)
533: h->flags |= HTML_KEEP;
534: putchar(' ');
535: } else
536: printf(" ");
537: }
1.1 schwarze 538:
1.20 schwarze 539: assert(NULL == h->metaf);
540: if (HTMLFONT_NONE != h->metac)
541: h->metaf = HTMLFONT_BOLD == h->metac ?
542: print_otag(h, TAG_B, 0, NULL) :
543: print_otag(h, TAG_I, 0, NULL);
544:
1.12 schwarze 545: assert(word);
546: if ( ! print_encode(h, word, 0))
1.13 schwarze 547: if ( ! (h->flags & HTML_NONOSPACE))
548: h->flags &= ~HTML_NOSPACE;
1.20 schwarze 549:
550: if (h->metaf) {
551: print_tagq(h, h->metaf);
552: h->metaf = NULL;
553: }
1.17 schwarze 554:
555: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 556:
1.8 schwarze 557: /*
558: * Note that we don't process the pipe: the parser sees it as
559: * punctuation, but we don't in terms of typography.
560: */
1.12 schwarze 561: if (word[0] && '\0' == word[1])
562: switch (word[0]) {
1.1 schwarze 563: case('('):
564: /* FALLTHROUGH */
565: case('['):
566: h->flags |= HTML_NOSPACE;
567: break;
568: default:
569: break;
570: }
571: }
572:
573:
574: void
575: print_tagq(struct html *h, const struct tag *until)
576: {
577: struct tag *tag;
578:
1.2 schwarze 579: while ((tag = h->tags.head) != NULL) {
1.5 schwarze 580: if (tag == h->metaf)
581: h->metaf = NULL;
1.1 schwarze 582: print_ctag(h, tag->tag);
1.2 schwarze 583: h->tags.head = tag->next;
1.1 schwarze 584: free(tag);
585: if (until && tag == until)
586: return;
587: }
588: }
589:
590:
591: void
592: print_stagq(struct html *h, const struct tag *suntil)
593: {
594: struct tag *tag;
595:
1.2 schwarze 596: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 597: if (suntil && tag == suntil)
598: return;
1.5 schwarze 599: if (tag == h->metaf)
600: h->metaf = NULL;
1.1 schwarze 601: print_ctag(h, tag->tag);
1.2 schwarze 602: h->tags.head = tag->next;
1.1 schwarze 603: free(tag);
604: }
605: }
606:
607:
608: void
609: bufinit(struct html *h)
610: {
611:
612: h->buf[0] = '\0';
613: h->buflen = 0;
614: }
615:
616:
617: void
618: bufcat_style(struct html *h, const char *key, const char *val)
619: {
620:
621: bufcat(h, key);
622: bufncat(h, ":", 1);
623: bufcat(h, val);
624: bufncat(h, ";", 1);
625: }
626:
627:
628: void
629: bufcat(struct html *h, const char *p)
630: {
631:
632: bufncat(h, p, strlen(p));
633: }
634:
635:
636: void
637: buffmt(struct html *h, const char *fmt, ...)
638: {
639: va_list ap;
640:
641: va_start(ap, fmt);
642: (void)vsnprintf(h->buf + (int)h->buflen,
643: BUFSIZ - h->buflen - 1, fmt, ap);
644: va_end(ap);
645: h->buflen = strlen(h->buf);
646: }
647:
648:
649: void
650: bufncat(struct html *h, const char *p, size_t sz)
651: {
652:
653: if (h->buflen + sz > BUFSIZ - 1)
654: sz = BUFSIZ - 1 - h->buflen;
655:
656: (void)strncat(h->buf, p, sz);
657: h->buflen += sz;
658: }
659:
660:
661: void
662: buffmt_includes(struct html *h, const char *name)
663: {
664: const char *p, *pp;
665:
666: pp = h->base_includes;
667:
668: while (NULL != (p = strchr(pp, '%'))) {
669: bufncat(h, pp, (size_t)(p - pp));
670: switch (*(p + 1)) {
671: case('I'):
672: bufcat(h, name);
673: break;
674: default:
675: bufncat(h, p, 2);
676: break;
677: }
678: pp = p + 2;
679: }
680: if (pp)
681: bufcat(h, pp);
682: }
683:
684:
685: void
686: buffmt_man(struct html *h,
687: const char *name, const char *sec)
688: {
689: const char *p, *pp;
690:
691: pp = h->base_man;
692:
693: /* LINTED */
694: while (NULL != (p = strchr(pp, '%'))) {
695: bufncat(h, pp, (size_t)(p - pp));
696: switch (*(p + 1)) {
697: case('S'):
698: bufcat(h, sec ? sec : "1");
699: break;
700: case('N'):
701: buffmt(h, name);
702: break;
703: default:
704: bufncat(h, p, 2);
705: break;
706: }
707: pp = p + 2;
708: }
709: if (pp)
710: bufcat(h, pp);
711: }
712:
713:
714: void
715: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
716: {
717: double v;
718: const char *u;
719:
720: v = su->scale;
721:
722: switch (su->unit) {
723: case (SCALE_CM):
724: u = "cm";
725: break;
726: case (SCALE_IN):
727: u = "in";
728: break;
729: case (SCALE_PC):
730: u = "pc";
731: break;
732: case (SCALE_PT):
733: u = "pt";
734: break;
735: case (SCALE_EM):
736: u = "em";
737: break;
738: case (SCALE_MM):
739: if (0 == (v /= 100))
740: v = 1;
741: u = "em";
742: break;
743: case (SCALE_EN):
744: u = "ex";
745: break;
746: case (SCALE_BU):
747: u = "ex";
748: break;
749: case (SCALE_VS):
750: u = "em";
751: break;
752: default:
753: u = "ex";
754: break;
755: }
756:
1.11 schwarze 757: /*
758: * XXX: the CSS spec isn't clear as to which types accept
759: * integer or real numbers, so we just make them all decimals.
760: */
761: buffmt(h, "%s: %.2f%s;", p, v, u);
1.1 schwarze 762: }
763:
1.3 schwarze 764:
765: void
766: html_idcat(char *dst, const char *src, int sz)
767: {
768: int ssz;
769:
1.21 ! schwarze 770: assert(sz > 2);
1.3 schwarze 771:
772: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
773:
1.21 ! schwarze 774: /* We can't start with a number (bah). */
! 775:
! 776: if ('#' == *dst) {
! 777: dst++;
! 778: sz--;
! 779: }
! 780: if ('\0' == *dst) {
! 781: *dst++ = 'x';
! 782: *dst = '\0';
! 783: sz--;
! 784: }
! 785:
1.3 schwarze 786: for ( ; *dst != '\0' && sz; dst++, sz--)
787: /* Jump to end. */ ;
788:
789: for ( ; *src != '\0' && sz > 1; src++) {
790: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
791: sz -= ssz;
792: dst += ssz;
793: }
794: }