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1.13 ! schwarze 1: /* $Id: html.c,v 1.12 2010/07/13 01:09:12 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 */
1.6 schwarze 56: {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
1.1 schwarze 57: {"tr", HTML_CLRLINE}, /* TAG_TR */
58: {"td", HTML_CLRLINE}, /* TAG_TD */
59: {"li", HTML_CLRLINE}, /* TAG_LI */
60: {"ul", HTML_CLRLINE}, /* TAG_UL */
61: {"ol", HTML_CLRLINE}, /* TAG_OL */
62: };
63:
1.5 schwarze 64: static const char *const htmlfonts[HTMLFONT_MAX] = {
65: "roman",
66: "bold",
67: "italic"
68: };
69:
70: static const char *const htmlattrs[ATTR_MAX] = {
1.1 schwarze 71: "http-equiv",
72: "content",
73: "name",
74: "rel",
75: "href",
76: "type",
77: "media",
78: "class",
79: "style",
80: "width",
81: "valign",
82: "target",
83: "id",
1.3 schwarze 84: "summary",
1.1 schwarze 85: };
86:
1.13 ! schwarze 87: static void print_spec(struct html *, enum roffdeco,
! 88: const char *, size_t);
1.5 schwarze 89: static void print_res(struct html *, const char *, size_t);
90: static void print_ctag(struct html *, enum htmltag);
1.6 schwarze 91: static void print_doctype(struct html *);
92: static void print_xmltype(struct html *);
1.5 schwarze 93: static int print_encode(struct html *, const char *, int);
94: static void print_metaf(struct html *, enum roffdeco);
1.6 schwarze 95: static void print_attr(struct html *,
96: const char *, const char *);
97: static void *ml_alloc(char *, enum htmltype);
1.5 schwarze 98:
99:
1.6 schwarze 100: static void *
101: ml_alloc(char *outopts, enum htmltype type)
1.1 schwarze 102: {
103: struct html *h;
104: const char *toks[4];
105: char *v;
106:
107: toks[0] = "style";
108: toks[1] = "man";
109: toks[2] = "includes";
110: toks[3] = NULL;
111:
1.3 schwarze 112: h = calloc(1, sizeof(struct html));
113: if (NULL == h) {
114: perror(NULL);
115: exit(EXIT_FAILURE);
116: }
1.1 schwarze 117:
1.6 schwarze 118: h->type = type;
1.2 schwarze 119: h->tags.head = NULL;
120: h->ords.head = NULL;
1.3 schwarze 121: h->symtab = chars_init(CHARS_HTML);
1.1 schwarze 122:
123: while (outopts && *outopts)
124: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
125: case (0):
126: h->style = v;
127: break;
128: case (1):
129: h->base_man = v;
130: break;
131: case (2):
132: h->base_includes = v;
133: break;
134: default:
135: break;
136: }
137:
138: return(h);
139: }
140:
1.6 schwarze 141: void *
142: html_alloc(char *outopts)
143: {
144:
145: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
146: }
147:
148:
149: void *
150: xhtml_alloc(char *outopts)
151: {
152:
153: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
154: }
155:
1.1 schwarze 156:
157: void
158: html_free(void *p)
159: {
160: struct tag *tag;
161: struct ord *ord;
162: struct html *h;
163:
164: h = (struct html *)p;
165:
1.2 schwarze 166: while ((ord = h->ords.head) != NULL) {
167: h->ords.head = ord->next;
1.1 schwarze 168: free(ord);
169: }
170:
1.2 schwarze 171: while ((tag = h->tags.head) != NULL) {
172: h->tags.head = tag->next;
1.1 schwarze 173: free(tag);
174: }
175:
176: if (h->symtab)
177: chars_free(h->symtab);
178:
179: free(h);
180: }
181:
182:
183: void
184: print_gen_head(struct html *h)
185: {
186: struct htmlpair tag[4];
187:
188: tag[0].key = ATTR_HTTPEQUIV;
189: tag[0].val = "Content-Type";
190: tag[1].key = ATTR_CONTENT;
191: tag[1].val = "text/html; charset=utf-8";
192: print_otag(h, TAG_META, 2, tag);
193:
194: tag[0].key = ATTR_NAME;
195: tag[0].val = "resource-type";
196: tag[1].key = ATTR_CONTENT;
197: tag[1].val = "document";
198: print_otag(h, TAG_META, 2, tag);
199:
200: if (h->style) {
201: tag[0].key = ATTR_REL;
202: tag[0].val = "stylesheet";
203: tag[1].key = ATTR_HREF;
204: tag[1].val = h->style;
205: tag[2].key = ATTR_TYPE;
206: tag[2].val = "text/css";
207: tag[3].key = ATTR_MEDIA;
208: tag[3].val = "all";
209: print_otag(h, TAG_LINK, 4, tag);
210: }
211: }
212:
213:
214: static void
1.13 ! schwarze 215: print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
1.1 schwarze 216: {
1.13 ! schwarze 217: int cp;
1.1 schwarze 218: const char *rhs;
219: size_t sz;
220:
1.13 ! schwarze 221: if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
! 222: printf("&#%d;", cp);
! 223: return;
! 224: } else if (-1 == cp && DECO_SSPECIAL == d) {
! 225: fwrite(p, 1, len, stdout);
! 226: return;
! 227: } else if (-1 == cp)
! 228: return;
1.1 schwarze 229:
1.13 ! schwarze 230: if (NULL != (rhs = chars_spec2str(h->symtab, p, len, &sz)))
! 231: fwrite(rhs, 1, sz, stdout);
1.1 schwarze 232: }
233:
234:
235: static void
1.5 schwarze 236: print_res(struct html *h, const char *p, size_t len)
1.1 schwarze 237: {
1.13 ! schwarze 238: int cp;
1.1 schwarze 239: const char *rhs;
240: size_t sz;
241:
1.13 ! schwarze 242: if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
! 243: printf("&#%d;", cp);
! 244: return;
! 245: } else if (-1 == cp)
! 246: return;
1.1 schwarze 247:
1.13 ! schwarze 248: if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
! 249: fwrite(rhs, 1, sz, stdout);
1.1 schwarze 250: }
251:
252:
1.5 schwarze 253: struct tag *
254: print_ofont(struct html *h, enum htmlfont font)
1.1 schwarze 255: {
1.5 schwarze 256: struct htmlpair tag;
1.1 schwarze 257:
1.5 schwarze 258: h->metal = h->metac;
259: h->metac = font;
1.1 schwarze 260:
1.5 schwarze 261: /* FIXME: DECO_ROMAN should just close out preexisting. */
1.1 schwarze 262:
1.5 schwarze 263: if (h->metaf && h->tags.head == h->metaf)
264: print_tagq(h, h->metaf);
1.1 schwarze 265:
1.5 schwarze 266: PAIR_CLASS_INIT(&tag, htmlfonts[font]);
267: h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
268: return(h->metaf);
269: }
1.1 schwarze 270:
271:
1.5 schwarze 272: static void
273: print_metaf(struct html *h, enum roffdeco deco)
274: {
275: enum htmlfont font;
1.1 schwarze 276:
1.5 schwarze 277: switch (deco) {
278: case (DECO_PREVIOUS):
279: font = h->metal;
280: break;
281: case (DECO_ITALIC):
282: font = HTMLFONT_ITALIC;
283: break;
284: case (DECO_BOLD):
285: font = HTMLFONT_BOLD;
286: break;
287: case (DECO_ROMAN):
288: font = HTMLFONT_NONE;
289: break;
290: default:
291: abort();
292: /* NOTREACHED */
1.1 schwarze 293: }
294:
1.5 schwarze 295: (void)print_ofont(h, font);
1.1 schwarze 296: }
297:
298:
1.5 schwarze 299: static int
300: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 301: {
1.4 schwarze 302: size_t sz;
1.5 schwarze 303: int len, nospace;
304: const char *seq;
305: enum roffdeco deco;
1.9 schwarze 306: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.5 schwarze 307:
308: nospace = 0;
1.1 schwarze 309:
310: for (; *p; p++) {
1.9 schwarze 311: sz = strcspn(p, rejs);
1.4 schwarze 312:
313: fwrite(p, 1, sz, stdout);
314: p += /* LINTED */
315: sz;
316:
1.5 schwarze 317: if ('<' == *p) {
318: printf("<");
319: continue;
320: } else if ('>' == *p) {
321: printf(">");
322: continue;
323: } else if ('&' == *p) {
324: printf("&");
1.1 schwarze 325: continue;
1.9 schwarze 326: } else if (ASCII_HYPH == *p) {
327: /*
328: * Note: "soft hyphens" aren't graphically
329: * displayed when not breaking the text; we want
330: * them to be displayed.
331: */
332: /*printf("­");*/
333: putchar('-');
334: continue;
1.4 schwarze 335: } else if ('\0' == *p)
336: break;
337:
1.5 schwarze 338: seq = ++p;
339: len = a2roffdeco(&deco, &seq, &sz);
340:
341: switch (deco) {
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)) {
1.3 schwarze 394: t = malloc(sizeof(struct tag));
395: if (NULL == t) {
396: perror(NULL);
397: exit(EXIT_FAILURE);
398: }
1.1 schwarze 399: t->tag = tag;
1.2 schwarze 400: t->next = h->tags.head;
401: h->tags.head = t;
1.1 schwarze 402: } else
403: t = NULL;
404:
405: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 406: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
407: /* Manage keeps! */
408: if ( ! (HTML_KEEP & h->flags)) {
409: if (HTML_PREKEEP & h->flags)
410: h->flags |= HTML_KEEP;
411: putchar(' ');
412: } else
413: printf(" ");
414: }
1.1 schwarze 415:
1.13 ! schwarze 416: if ( ! (h->flags & HTML_NONOSPACE))
! 417: h->flags &= ~HTML_NOSPACE;
! 418:
1.6 schwarze 419: /* Print out the tag name and attributes. */
420:
1.1 schwarze 421: printf("<%s", htmltags[tag].name);
1.6 schwarze 422: for (i = 0; i < sz; i++)
423: print_attr(h, htmlattrs[p[i].key], p[i].val);
424:
425: /* Add non-overridable attributes. */
426:
427: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
428: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
429: print_attr(h, "xml:lang", "en");
430: print_attr(h, "lang", "en");
1.1 schwarze 431: }
1.6 schwarze 432:
433: /* Accomodate for XML "well-formed" singleton escaping. */
434:
435: if (HTML_AUTOCLOSE & htmltags[tag].flags)
436: switch (h->type) {
437: case (HTML_XHTML_1_0_STRICT):
438: putchar('/');
439: break;
440: default:
441: break;
442: }
443:
1.4 schwarze 444: putchar('>');
1.1 schwarze 445:
446: h->flags |= HTML_NOSPACE;
447: return(t);
448: }
449:
450:
451: static void
452: print_ctag(struct html *h, enum htmltag tag)
453: {
454:
455: printf("</%s>", htmltags[tag].name);
1.3 schwarze 456: if (HTML_CLRLINE & htmltags[tag].flags) {
1.1 schwarze 457: h->flags |= HTML_NOSPACE;
1.4 schwarze 458: putchar('\n');
1.5 schwarze 459: }
1.1 schwarze 460: }
461:
462:
463: void
1.6 schwarze 464: print_gen_decls(struct html *h)
465: {
466:
467: print_xmltype(h);
468: print_doctype(h);
469: }
470:
471:
472: static void
473: print_xmltype(struct html *h)
474: {
475:
1.9 schwarze 476: if (HTML_XHTML_1_0_STRICT == h->type)
477: printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.6 schwarze 478: }
479:
480:
481: static void
482: print_doctype(struct html *h)
1.1 schwarze 483: {
1.6 schwarze 484: const char *doctype;
485: const char *dtd;
486: const char *name;
487:
488: switch (h->type) {
489: case (HTML_HTML_4_01_STRICT):
490: name = "HTML";
491: doctype = "-//W3C//DTD HTML 4.01//EN";
492: dtd = "http://www.w3.org/TR/html4/strict.dtd";
493: break;
494: default:
495: name = "html";
496: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
497: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
498: break;
499: }
500:
501: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
502: name, doctype, dtd);
1.1 schwarze 503: }
504:
505:
506: void
1.12 schwarze 507: print_text(struct html *h, const char *word)
1.1 schwarze 508: {
509:
1.12 schwarze 510: if (word[0] && '\0' == word[1])
511: switch (word[0]) {
1.1 schwarze 512: case('.'):
513: /* FALLTHROUGH */
514: case(','):
515: /* FALLTHROUGH */
516: case(';'):
517: /* FALLTHROUGH */
518: case(':'):
519: /* FALLTHROUGH */
520: case('?'):
521: /* FALLTHROUGH */
522: case('!'):
523: /* FALLTHROUGH */
524: case(')'):
525: /* FALLTHROUGH */
526: case(']'):
527: if ( ! (HTML_IGNDELIM & h->flags))
528: h->flags |= HTML_NOSPACE;
529: break;
530: default:
531: break;
532: }
533:
1.12 schwarze 534: if ( ! (HTML_NOSPACE & h->flags)) {
535: /* Manage keeps! */
536: if ( ! (HTML_KEEP & h->flags)) {
537: if (HTML_PREKEEP & h->flags)
538: h->flags |= HTML_KEEP;
539: putchar(' ');
540: } else
541: printf(" ");
542: }
1.1 schwarze 543:
1.12 schwarze 544: assert(word);
545: if ( ! print_encode(h, word, 0))
1.13 ! schwarze 546: if ( ! (h->flags & HTML_NONOSPACE))
! 547: h->flags &= ~HTML_NOSPACE;
1.1 schwarze 548:
1.8 schwarze 549: /*
550: * Note that we don't process the pipe: the parser sees it as
551: * punctuation, but we don't in terms of typography.
552: */
1.12 schwarze 553: if (word[0] && '\0' == word[1])
554: switch (word[0]) {
1.1 schwarze 555: case('('):
556: /* FALLTHROUGH */
557: case('['):
558: h->flags |= HTML_NOSPACE;
559: break;
560: default:
561: break;
562: }
563: }
564:
565:
566: void
567: print_tagq(struct html *h, const struct tag *until)
568: {
569: struct tag *tag;
570:
1.2 schwarze 571: while ((tag = h->tags.head) != NULL) {
1.5 schwarze 572: if (tag == h->metaf)
573: h->metaf = NULL;
1.1 schwarze 574: print_ctag(h, tag->tag);
1.2 schwarze 575: h->tags.head = tag->next;
1.1 schwarze 576: free(tag);
577: if (until && tag == until)
578: return;
579: }
580: }
581:
582:
583: void
584: print_stagq(struct html *h, const struct tag *suntil)
585: {
586: struct tag *tag;
587:
1.2 schwarze 588: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 589: if (suntil && tag == suntil)
590: return;
1.5 schwarze 591: if (tag == h->metaf)
592: h->metaf = NULL;
1.1 schwarze 593: print_ctag(h, tag->tag);
1.2 schwarze 594: h->tags.head = tag->next;
1.1 schwarze 595: free(tag);
596: }
597: }
598:
599:
600: void
601: bufinit(struct html *h)
602: {
603:
604: h->buf[0] = '\0';
605: h->buflen = 0;
606: }
607:
608:
609: void
610: bufcat_style(struct html *h, const char *key, const char *val)
611: {
612:
613: bufcat(h, key);
614: bufncat(h, ":", 1);
615: bufcat(h, val);
616: bufncat(h, ";", 1);
617: }
618:
619:
620: void
621: bufcat(struct html *h, const char *p)
622: {
623:
624: bufncat(h, p, strlen(p));
625: }
626:
627:
628: void
629: buffmt(struct html *h, const char *fmt, ...)
630: {
631: va_list ap;
632:
633: va_start(ap, fmt);
634: (void)vsnprintf(h->buf + (int)h->buflen,
635: BUFSIZ - h->buflen - 1, fmt, ap);
636: va_end(ap);
637: h->buflen = strlen(h->buf);
638: }
639:
640:
641: void
642: bufncat(struct html *h, const char *p, size_t sz)
643: {
644:
645: if (h->buflen + sz > BUFSIZ - 1)
646: sz = BUFSIZ - 1 - h->buflen;
647:
648: (void)strncat(h->buf, p, sz);
649: h->buflen += sz;
650: }
651:
652:
653: void
654: buffmt_includes(struct html *h, const char *name)
655: {
656: const char *p, *pp;
657:
658: pp = h->base_includes;
659:
660: while (NULL != (p = strchr(pp, '%'))) {
661: bufncat(h, pp, (size_t)(p - pp));
662: switch (*(p + 1)) {
663: case('I'):
664: bufcat(h, name);
665: break;
666: default:
667: bufncat(h, p, 2);
668: break;
669: }
670: pp = p + 2;
671: }
672: if (pp)
673: bufcat(h, pp);
674: }
675:
676:
677: void
678: buffmt_man(struct html *h,
679: const char *name, const char *sec)
680: {
681: const char *p, *pp;
682:
683: pp = h->base_man;
684:
685: /* LINTED */
686: while (NULL != (p = strchr(pp, '%'))) {
687: bufncat(h, pp, (size_t)(p - pp));
688: switch (*(p + 1)) {
689: case('S'):
690: bufcat(h, sec ? sec : "1");
691: break;
692: case('N'):
693: buffmt(h, name);
694: break;
695: default:
696: bufncat(h, p, 2);
697: break;
698: }
699: pp = p + 2;
700: }
701: if (pp)
702: bufcat(h, pp);
703: }
704:
705:
706: void
707: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
708: {
709: double v;
710: const char *u;
711:
712: v = su->scale;
713:
714: switch (su->unit) {
715: case (SCALE_CM):
716: u = "cm";
717: break;
718: case (SCALE_IN):
719: u = "in";
720: break;
721: case (SCALE_PC):
722: u = "pc";
723: break;
724: case (SCALE_PT):
725: u = "pt";
726: break;
727: case (SCALE_EM):
728: u = "em";
729: break;
730: case (SCALE_MM):
731: if (0 == (v /= 100))
732: v = 1;
733: u = "em";
734: break;
735: case (SCALE_EN):
736: u = "ex";
737: break;
738: case (SCALE_BU):
739: u = "ex";
740: break;
741: case (SCALE_VS):
742: u = "em";
743: break;
744: default:
745: u = "ex";
746: break;
747: }
748:
1.11 schwarze 749: /*
750: * XXX: the CSS spec isn't clear as to which types accept
751: * integer or real numbers, so we just make them all decimals.
752: */
753: buffmt(h, "%s: %.2f%s;", p, v, u);
1.1 schwarze 754: }
755:
1.3 schwarze 756:
757: void
758: html_idcat(char *dst, const char *src, int sz)
759: {
760: int ssz;
761:
762: assert(sz);
763:
764: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
765:
766: for ( ; *dst != '\0' && sz; dst++, sz--)
767: /* Jump to end. */ ;
768:
769: assert(sz > 2);
770:
771: /* We can't start with a number (bah). */
772:
773: *dst++ = 'x';
774: *dst = '\0';
775: sz--;
776:
777: for ( ; *src != '\0' && sz > 1; src++) {
778: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
779: sz -= ssz;
780: dst += ssz;
781: }
782: }