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1.25 ! schwarze 1: /* $Id: html.c,v 1.24 2011/04/21 22:59:54 schwarze Exp $ */
1.1 schwarze 2: /*
1.22 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.23 schwarze 4: * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.
17: */
18: #include <sys/types.h>
19:
20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.4 schwarze 22: #include <stdarg.h>
1.1 schwarze 23: #include <stdio.h>
24: #include <stdint.h>
25: #include <stdlib.h>
26: #include <string.h>
27: #include <unistd.h>
28:
1.9 schwarze 29: #include "mandoc.h"
1.1 schwarze 30: #include "out.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 */
1.22 schwarze 89: "colspan", /* ATTR_COLSPAN */
1.1 schwarze 90: };
91:
1.23 schwarze 92: static void print_num(struct html *, const char *, size_t);
1.13 schwarze 93: static void print_spec(struct html *, enum roffdeco,
94: const char *, size_t);
1.5 schwarze 95: static void print_res(struct html *, const char *, size_t);
96: static void print_ctag(struct html *, enum htmltag);
1.6 schwarze 97: static void print_doctype(struct html *);
98: static void print_xmltype(struct html *);
1.5 schwarze 99: static int print_encode(struct html *, const char *, int);
100: static void print_metaf(struct html *, enum roffdeco);
1.6 schwarze 101: static void print_attr(struct html *,
102: const char *, const char *);
103: static void *ml_alloc(char *, enum htmltype);
1.5 schwarze 104:
105:
1.6 schwarze 106: static void *
107: ml_alloc(char *outopts, enum htmltype type)
1.1 schwarze 108: {
109: struct html *h;
110: const char *toks[4];
111: char *v;
112:
113: toks[0] = "style";
114: toks[1] = "man";
115: toks[2] = "includes";
116: toks[3] = NULL;
117:
1.24 schwarze 118: h = mandoc_calloc(1, sizeof(struct html));
1.1 schwarze 119:
1.6 schwarze 120: h->type = type;
1.2 schwarze 121: h->tags.head = NULL;
1.3 schwarze 122: h->symtab = chars_init(CHARS_HTML);
1.1 schwarze 123:
124: while (outopts && *outopts)
125: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
126: case (0):
127: h->style = v;
128: break;
129: case (1):
130: h->base_man = v;
131: break;
132: case (2):
133: h->base_includes = v;
134: break;
135: default:
136: break;
137: }
138:
139: return(h);
140: }
141:
1.6 schwarze 142: void *
143: html_alloc(char *outopts)
144: {
145:
146: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
147: }
148:
149:
150: void *
151: xhtml_alloc(char *outopts)
152: {
153:
154: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
155: }
156:
1.1 schwarze 157:
158: void
159: html_free(void *p)
160: {
161: struct tag *tag;
162: struct html *h;
163:
164: h = (struct html *)p;
165:
1.2 schwarze 166: while ((tag = h->tags.head) != NULL) {
167: h->tags.head = tag->next;
1.1 schwarze 168: free(tag);
169: }
170:
171: if (h->symtab)
172: chars_free(h->symtab);
173:
174: free(h);
175: }
176:
177:
178: void
179: print_gen_head(struct html *h)
180: {
181: struct htmlpair tag[4];
182:
183: tag[0].key = ATTR_HTTPEQUIV;
184: tag[0].val = "Content-Type";
185: tag[1].key = ATTR_CONTENT;
186: tag[1].val = "text/html; charset=utf-8";
187: print_otag(h, TAG_META, 2, tag);
188:
189: tag[0].key = ATTR_NAME;
190: tag[0].val = "resource-type";
191: tag[1].key = ATTR_CONTENT;
192: tag[1].val = "document";
193: print_otag(h, TAG_META, 2, tag);
194:
195: if (h->style) {
196: tag[0].key = ATTR_REL;
197: tag[0].val = "stylesheet";
198: tag[1].key = ATTR_HREF;
199: tag[1].val = h->style;
200: tag[2].key = ATTR_TYPE;
201: tag[2].val = "text/css";
202: tag[3].key = ATTR_MEDIA;
203: tag[3].val = "all";
204: print_otag(h, TAG_LINK, 4, tag);
205: }
206: }
207:
1.24 schwarze 208: /* ARGSUSED */
1.1 schwarze 209: static void
1.23 schwarze 210: print_num(struct html *h, const char *p, size_t len)
211: {
212: const char *rhs;
213:
214: rhs = chars_num2char(p, len);
215: if (rhs)
216: putchar((int)*rhs);
217: }
218:
219: static void
1.13 schwarze 220: print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
1.1 schwarze 221: {
1.13 schwarze 222: int cp;
1.1 schwarze 223: const char *rhs;
224: size_t sz;
225:
1.13 schwarze 226: if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
227: printf("&#%d;", cp);
228: return;
229: } else if (-1 == cp && DECO_SSPECIAL == d) {
230: fwrite(p, 1, len, stdout);
231: return;
232: } else if (-1 == cp)
233: return;
1.1 schwarze 234:
1.13 schwarze 235: if (NULL != (rhs = chars_spec2str(h->symtab, p, len, &sz)))
236: fwrite(rhs, 1, sz, stdout);
1.1 schwarze 237: }
238:
239:
240: static void
1.5 schwarze 241: print_res(struct html *h, const char *p, size_t len)
1.1 schwarze 242: {
1.13 schwarze 243: int cp;
1.1 schwarze 244: const char *rhs;
245: size_t sz;
246:
1.13 schwarze 247: if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
248: printf("&#%d;", cp);
249: return;
250: } else if (-1 == cp)
251: return;
1.1 schwarze 252:
1.13 schwarze 253: if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
254: fwrite(rhs, 1, sz, stdout);
1.1 schwarze 255: }
256:
257:
1.5 schwarze 258: static void
259: print_metaf(struct html *h, enum roffdeco deco)
260: {
261: enum htmlfont font;
1.1 schwarze 262:
1.5 schwarze 263: switch (deco) {
264: case (DECO_PREVIOUS):
265: font = h->metal;
266: break;
267: case (DECO_ITALIC):
268: font = HTMLFONT_ITALIC;
269: break;
270: case (DECO_BOLD):
271: font = HTMLFONT_BOLD;
272: break;
273: case (DECO_ROMAN):
274: font = HTMLFONT_NONE;
275: break;
276: default:
277: abort();
278: /* NOTREACHED */
1.1 schwarze 279: }
280:
1.20 schwarze 281: if (h->metaf) {
282: print_tagq(h, h->metaf);
283: h->metaf = NULL;
284: }
285:
286: h->metal = h->metac;
287: h->metac = font;
288:
289: if (HTMLFONT_NONE != font)
290: h->metaf = HTMLFONT_BOLD == font ?
291: print_otag(h, TAG_B, 0, NULL) :
292: print_otag(h, TAG_I, 0, NULL);
1.1 schwarze 293: }
294:
295:
1.5 schwarze 296: static int
297: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 298: {
1.4 schwarze 299: size_t sz;
1.5 schwarze 300: int len, nospace;
301: const char *seq;
302: enum roffdeco deco;
1.9 schwarze 303: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.5 schwarze 304:
305: nospace = 0;
1.1 schwarze 306:
307: for (; *p; p++) {
1.9 schwarze 308: sz = strcspn(p, rejs);
1.4 schwarze 309:
310: fwrite(p, 1, sz, stdout);
311: p += /* LINTED */
312: sz;
313:
1.5 schwarze 314: if ('<' == *p) {
315: printf("<");
316: continue;
317: } else if ('>' == *p) {
318: printf(">");
319: continue;
320: } else if ('&' == *p) {
321: printf("&");
1.1 schwarze 322: continue;
1.9 schwarze 323: } else if (ASCII_HYPH == *p) {
324: /*
325: * Note: "soft hyphens" aren't graphically
326: * displayed when not breaking the text; we want
327: * them to be displayed.
328: */
329: /*printf("­");*/
330: putchar('-');
331: continue;
1.4 schwarze 332: } else if ('\0' == *p)
333: break;
334:
1.5 schwarze 335: seq = ++p;
336: len = a2roffdeco(&deco, &seq, &sz);
337:
338: switch (deco) {
1.23 schwarze 339: case (DECO_NUMBERED):
340: print_num(h, seq, sz);
341: break;
1.5 schwarze 342: case (DECO_RESERVED):
343: print_res(h, seq, sz);
344: break;
1.13 schwarze 345: case (DECO_SSPECIAL):
346: /* FALLTHROUGH */
1.5 schwarze 347: case (DECO_SPECIAL):
1.13 schwarze 348: print_spec(h, deco, seq, sz);
1.5 schwarze 349: break;
350: case (DECO_PREVIOUS):
351: /* FALLTHROUGH */
352: case (DECO_BOLD):
353: /* FALLTHROUGH */
354: case (DECO_ITALIC):
355: /* FALLTHROUGH */
356: case (DECO_ROMAN):
357: if (norecurse)
358: break;
359: print_metaf(h, deco);
360: break;
361: default:
362: break;
363: }
364:
365: p += len - 1;
366:
367: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
368: nospace = 1;
1.1 schwarze 369: }
1.5 schwarze 370:
371: return(nospace);
1.1 schwarze 372: }
373:
374:
1.6 schwarze 375: static void
376: print_attr(struct html *h, const char *key, const char *val)
377: {
378: printf(" %s=\"", key);
379: (void)print_encode(h, val, 1);
380: putchar('\"');
381: }
382:
383:
1.1 schwarze 384: struct tag *
385: print_otag(struct html *h, enum htmltag tag,
386: int sz, const struct htmlpair *p)
387: {
388: int i;
389: struct tag *t;
390:
1.6 schwarze 391: /* Push this tags onto the stack of open scopes. */
392:
1.1 schwarze 393: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 394: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 395: t->tag = tag;
1.2 schwarze 396: t->next = h->tags.head;
397: h->tags.head = t;
1.1 schwarze 398: } else
399: t = NULL;
400:
401: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 402: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
403: /* Manage keeps! */
404: if ( ! (HTML_KEEP & h->flags)) {
405: if (HTML_PREKEEP & h->flags)
406: h->flags |= HTML_KEEP;
407: putchar(' ');
408: } else
409: printf(" ");
410: }
1.1 schwarze 411:
1.13 schwarze 412: if ( ! (h->flags & HTML_NONOSPACE))
413: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 414: else
415: h->flags |= HTML_NOSPACE;
1.13 schwarze 416:
1.6 schwarze 417: /* Print out the tag name and attributes. */
418:
1.1 schwarze 419: printf("<%s", htmltags[tag].name);
1.6 schwarze 420: for (i = 0; i < sz; i++)
421: print_attr(h, htmlattrs[p[i].key], p[i].val);
422:
423: /* Add non-overridable attributes. */
424:
425: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
426: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
427: print_attr(h, "xml:lang", "en");
428: print_attr(h, "lang", "en");
1.1 schwarze 429: }
1.6 schwarze 430:
431: /* Accomodate for XML "well-formed" singleton escaping. */
432:
433: if (HTML_AUTOCLOSE & htmltags[tag].flags)
434: switch (h->type) {
435: case (HTML_XHTML_1_0_STRICT):
436: putchar('/');
437: break;
438: default:
439: break;
440: }
441:
1.4 schwarze 442: putchar('>');
1.1 schwarze 443:
444: h->flags |= HTML_NOSPACE;
1.18 schwarze 445:
446: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
447: putchar('\n');
448:
1.1 schwarze 449: return(t);
450: }
451:
452:
453: static void
454: print_ctag(struct html *h, enum htmltag tag)
455: {
456:
457: printf("</%s>", htmltags[tag].name);
1.3 schwarze 458: if (HTML_CLRLINE & htmltags[tag].flags) {
1.1 schwarze 459: h->flags |= HTML_NOSPACE;
1.4 schwarze 460: putchar('\n');
1.5 schwarze 461: }
1.1 schwarze 462: }
463:
464:
465: void
1.6 schwarze 466: print_gen_decls(struct html *h)
467: {
468:
469: print_xmltype(h);
470: print_doctype(h);
471: }
472:
473:
474: static void
475: print_xmltype(struct html *h)
476: {
477:
1.9 schwarze 478: if (HTML_XHTML_1_0_STRICT == h->type)
1.20 schwarze 479: puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.6 schwarze 480: }
481:
482:
483: static void
484: print_doctype(struct html *h)
1.1 schwarze 485: {
1.6 schwarze 486: const char *doctype;
487: const char *dtd;
488: const char *name;
489:
490: switch (h->type) {
491: case (HTML_HTML_4_01_STRICT):
492: name = "HTML";
493: doctype = "-//W3C//DTD HTML 4.01//EN";
494: dtd = "http://www.w3.org/TR/html4/strict.dtd";
495: break;
496: default:
497: name = "html";
498: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
499: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
500: break;
501: }
502:
503: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
504: name, doctype, dtd);
1.1 schwarze 505: }
506:
507: void
1.12 schwarze 508: print_text(struct html *h, const char *word)
1.1 schwarze 509: {
510:
1.12 schwarze 511: if ( ! (HTML_NOSPACE & h->flags)) {
512: /* Manage keeps! */
513: if ( ! (HTML_KEEP & h->flags)) {
514: if (HTML_PREKEEP & h->flags)
515: h->flags |= HTML_KEEP;
516: putchar(' ');
517: } else
518: printf(" ");
519: }
1.1 schwarze 520:
1.20 schwarze 521: assert(NULL == h->metaf);
522: if (HTMLFONT_NONE != h->metac)
523: h->metaf = HTMLFONT_BOLD == h->metac ?
524: print_otag(h, TAG_B, 0, NULL) :
525: print_otag(h, TAG_I, 0, NULL);
526:
1.12 schwarze 527: assert(word);
528: if ( ! print_encode(h, word, 0))
1.13 schwarze 529: if ( ! (h->flags & HTML_NONOSPACE))
530: h->flags &= ~HTML_NOSPACE;
1.20 schwarze 531:
532: if (h->metaf) {
533: print_tagq(h, h->metaf);
534: h->metaf = NULL;
535: }
1.17 schwarze 536:
537: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 538: }
539:
540:
541: void
542: print_tagq(struct html *h, const struct tag *until)
543: {
544: struct tag *tag;
545:
1.2 schwarze 546: while ((tag = h->tags.head) != NULL) {
1.22 schwarze 547: /*
548: * Remember to close out and nullify the current
549: * meta-font and table, if applicable.
550: */
1.5 schwarze 551: if (tag == h->metaf)
552: h->metaf = NULL;
1.22 schwarze 553: if (tag == h->tblt)
554: h->tblt = NULL;
1.1 schwarze 555: print_ctag(h, tag->tag);
1.2 schwarze 556: h->tags.head = tag->next;
1.1 schwarze 557: free(tag);
558: if (until && tag == until)
559: return;
560: }
561: }
562:
563:
564: void
565: print_stagq(struct html *h, const struct tag *suntil)
566: {
567: struct tag *tag;
568:
1.2 schwarze 569: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 570: if (suntil && tag == suntil)
571: return;
1.22 schwarze 572: /*
573: * Remember to close out and nullify the current
574: * meta-font and table, if applicable.
575: */
1.5 schwarze 576: if (tag == h->metaf)
577: h->metaf = NULL;
1.22 schwarze 578: if (tag == h->tblt)
579: h->tblt = NULL;
1.1 schwarze 580: print_ctag(h, tag->tag);
1.2 schwarze 581: h->tags.head = tag->next;
1.1 schwarze 582: free(tag);
583: }
584: }
585:
586:
587: void
588: bufinit(struct html *h)
589: {
590:
591: h->buf[0] = '\0';
592: h->buflen = 0;
593: }
594:
595:
596: void
597: bufcat_style(struct html *h, const char *key, const char *val)
598: {
599:
600: bufcat(h, key);
601: bufncat(h, ":", 1);
602: bufcat(h, val);
603: bufncat(h, ";", 1);
604: }
605:
606:
607: void
608: bufcat(struct html *h, const char *p)
609: {
610:
611: bufncat(h, p, strlen(p));
612: }
613:
614:
615: void
616: buffmt(struct html *h, const char *fmt, ...)
617: {
618: va_list ap;
619:
620: va_start(ap, fmt);
621: (void)vsnprintf(h->buf + (int)h->buflen,
622: BUFSIZ - h->buflen - 1, fmt, ap);
623: va_end(ap);
624: h->buflen = strlen(h->buf);
625: }
626:
627:
628: void
629: bufncat(struct html *h, const char *p, size_t sz)
630: {
631:
632: if (h->buflen + sz > BUFSIZ - 1)
633: sz = BUFSIZ - 1 - h->buflen;
634:
635: (void)strncat(h->buf, p, sz);
636: h->buflen += sz;
637: }
638:
639:
640: void
641: buffmt_includes(struct html *h, const char *name)
642: {
643: const char *p, *pp;
644:
645: pp = h->base_includes;
646:
647: while (NULL != (p = strchr(pp, '%'))) {
648: bufncat(h, pp, (size_t)(p - pp));
649: switch (*(p + 1)) {
650: case('I'):
651: bufcat(h, name);
652: break;
653: default:
654: bufncat(h, p, 2);
655: break;
656: }
657: pp = p + 2;
658: }
659: if (pp)
660: bufcat(h, pp);
661: }
662:
663:
664: void
665: buffmt_man(struct html *h,
666: const char *name, const char *sec)
667: {
668: const char *p, *pp;
669:
670: pp = h->base_man;
671:
672: /* LINTED */
673: while (NULL != (p = strchr(pp, '%'))) {
674: bufncat(h, pp, (size_t)(p - pp));
675: switch (*(p + 1)) {
676: case('S'):
677: bufcat(h, sec ? sec : "1");
678: break;
679: case('N'):
680: buffmt(h, name);
681: break;
682: default:
683: bufncat(h, p, 2);
684: break;
685: }
686: pp = p + 2;
687: }
688: if (pp)
689: bufcat(h, pp);
690: }
691:
692:
693: void
694: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
695: {
696: double v;
697: const char *u;
698:
699: v = su->scale;
700:
701: switch (su->unit) {
702: case (SCALE_CM):
703: u = "cm";
704: break;
705: case (SCALE_IN):
706: u = "in";
707: break;
708: case (SCALE_PC):
709: u = "pc";
710: break;
711: case (SCALE_PT):
712: u = "pt";
713: break;
714: case (SCALE_EM):
715: u = "em";
716: break;
717: case (SCALE_MM):
718: if (0 == (v /= 100))
719: v = 1;
720: u = "em";
721: break;
722: case (SCALE_EN):
723: u = "ex";
724: break;
725: case (SCALE_BU):
726: u = "ex";
727: break;
728: case (SCALE_VS):
729: u = "em";
730: break;
731: default:
732: u = "ex";
733: break;
734: }
735:
1.11 schwarze 736: /*
737: * XXX: the CSS spec isn't clear as to which types accept
738: * integer or real numbers, so we just make them all decimals.
739: */
740: buffmt(h, "%s: %.2f%s;", p, v, u);
1.1 schwarze 741: }
742:
1.3 schwarze 743:
744: void
745: html_idcat(char *dst, const char *src, int sz)
746: {
747: int ssz;
748:
1.21 schwarze 749: assert(sz > 2);
1.3 schwarze 750:
751: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
752:
1.21 schwarze 753: /* We can't start with a number (bah). */
754:
755: if ('#' == *dst) {
756: dst++;
757: sz--;
758: }
759: if ('\0' == *dst) {
760: *dst++ = 'x';
761: *dst = '\0';
762: sz--;
763: }
764:
1.3 schwarze 765: for ( ; *dst != '\0' && sz; dst++, sz--)
766: /* Jump to end. */ ;
767:
768: for ( ; *src != '\0' && sz > 1; src++) {
769: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
770: sz -= ssz;
771: dst += ssz;
772: }
773: }