Annotation of mandoc/html.c, Revision 1.93
1.93 ! kristaps 1: /* $Id: html.c,v 1.92 2010/01/01 17:14:27 kristaps Exp $ */
1.1 kristaps 2: /*
1.29 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.29 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.29 kristaps 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.
1.1 kristaps 16: */
1.92 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.41 kristaps 21: #include <sys/types.h>
1.30 kristaps 22:
1.1 kristaps 23: #include <assert.h>
1.68 kristaps 24: #include <ctype.h>
1.76 kristaps 25: #include <stdarg.h>
1.29 kristaps 26: #include <stdio.h>
1.63 kristaps 27: #include <stdint.h>
1.1 kristaps 28: #include <stdlib.h>
1.33 kristaps 29: #include <string.h>
1.45 kristaps 30: #include <unistd.h>
1.1 kristaps 31:
1.58 kristaps 32: #include "out.h"
1.32 kristaps 33: #include "chars.h"
1.51 kristaps 34: #include "html.h"
1.64 kristaps 35: #include "main.h"
1.2 kristaps 36:
1.63 kristaps 37: #define UNCONST(a) ((void *)(uintptr_t)(const void *)(a))
38:
1.29 kristaps 39: struct htmldata {
1.63 kristaps 40: const char *name;
1.29 kristaps 41: int flags;
1.30 kristaps 42: #define HTML_CLRLINE (1 << 0)
43: #define HTML_NOSTACK (1 << 1)
1.93 ! kristaps 44: #define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */
1.29 kristaps 45: };
1.7 kristaps 46:
1.29 kristaps 47: static const struct htmldata htmltags[TAG_MAX] = {
1.30 kristaps 48: {"html", HTML_CLRLINE}, /* TAG_HTML */
49: {"head", HTML_CLRLINE}, /* TAG_HEAD */
50: {"body", HTML_CLRLINE}, /* TAG_BODY */
1.93 ! kristaps 51: {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */
1.33 kristaps 52: {"title", HTML_CLRLINE}, /* TAG_TITLE */
1.30 kristaps 53: {"div", HTML_CLRLINE}, /* TAG_DIV */
1.29 kristaps 54: {"h1", 0}, /* TAG_H1 */
55: {"h2", 0}, /* TAG_H2 */
56: {"span", 0}, /* TAG_SPAN */
1.30 kristaps 57: {"link", HTML_CLRLINE | HTML_NOSTACK}, /* TAG_LINK */
1.93 ! kristaps 58: {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
1.30 kristaps 59: {"a", 0}, /* TAG_A */
1.33 kristaps 60: {"table", HTML_CLRLINE}, /* TAG_TABLE */
1.93 ! kristaps 61: {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
1.33 kristaps 62: {"tr", HTML_CLRLINE}, /* TAG_TR */
63: {"td", HTML_CLRLINE}, /* TAG_TD */
1.34 kristaps 64: {"li", HTML_CLRLINE}, /* TAG_LI */
65: {"ul", HTML_CLRLINE}, /* TAG_UL */
66: {"ol", HTML_CLRLINE}, /* TAG_OL */
1.29 kristaps 67: };
1.10 kristaps 68:
1.90 kristaps 69: static const char *const htmlfonts[HTMLFONT_MAX] = {
70: "roman",
71: "bold",
72: "italic"
73: };
74:
1.82 kristaps 75: static const char *const htmlattrs[ATTR_MAX] = {
1.29 kristaps 76: "http-equiv",
77: "content",
78: "name",
79: "rel",
80: "href",
81: "type",
82: "media",
1.33 kristaps 83: "class",
84: "style",
85: "width",
86: "valign",
1.54 kristaps 87: "target",
1.57 kristaps 88: "id",
1.67 kristaps 89: "summary",
1.29 kristaps 90: };
1.10 kristaps 91:
1.83 kristaps 92: static void print_spec(struct html *, const char *, size_t);
93: static void print_res(struct html *, const char *, size_t);
1.82 kristaps 94: static void print_ctag(struct html *, enum htmltag);
1.93 ! kristaps 95: static void print_doctype(struct html *);
! 96: static void print_xmltype(struct html *);
1.88 kristaps 97: static int print_encode(struct html *, const char *, int);
98: static void print_metaf(struct html *, enum roffdeco);
1.93 ! kristaps 99: static void *ml_alloc(char *, enum htmltype);
1.82 kristaps 100:
101:
1.93 ! kristaps 102: static void *
! 103: ml_alloc(char *outopts, enum htmltype type)
1.10 kristaps 104: {
1.30 kristaps 105: struct html *h;
1.63 kristaps 106: const char *toks[4];
107: char *v;
1.43 kristaps 108:
109: toks[0] = "style";
1.53 kristaps 110: toks[1] = "man";
1.54 kristaps 111: toks[2] = "includes";
112: toks[3] = NULL;
1.30 kristaps 113:
1.72 kristaps 114: h = calloc(1, sizeof(struct html));
115: if (NULL == h) {
1.75 kristaps 116: perror(NULL);
1.72 kristaps 117: exit(EXIT_FAILURE);
118: }
1.10 kristaps 119:
1.93 ! kristaps 120: h->type = type;
1.66 kristaps 121: h->tags.head = NULL;
122: h->ords.head = NULL;
1.72 kristaps 123: h->symtab = chars_init(CHARS_HTML);
1.41 kristaps 124:
1.47 kristaps 125: while (outopts && *outopts)
1.63 kristaps 126: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 127: case (0):
128: h->style = v;
129: break;
130: case (1):
1.53 kristaps 131: h->base_man = v;
1.43 kristaps 132: break;
1.54 kristaps 133: case (2):
134: h->base_includes = v;
135: break;
1.43 kristaps 136: default:
137: break;
138: }
139:
1.30 kristaps 140: return(h);
1.29 kristaps 141: }
1.10 kristaps 142:
1.93 ! kristaps 143: void *
! 144: html_alloc(char *outopts)
! 145: {
! 146:
! 147: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
! 148: }
! 149:
! 150:
! 151: void *
! 152: xhtml_alloc(char *outopts)
! 153: {
! 154:
! 155: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
! 156: }
! 157:
1.33 kristaps 158:
1.29 kristaps 159: void
160: html_free(void *p)
161: {
1.30 kristaps 162: struct tag *tag;
1.37 kristaps 163: struct ord *ord;
1.30 kristaps 164: struct html *h;
165:
166: h = (struct html *)p;
1.10 kristaps 167:
1.66 kristaps 168: while ((ord = h->ords.head) != NULL) {
169: h->ords.head = ord->next;
1.37 kristaps 170: free(ord);
171: }
172:
1.66 kristaps 173: while ((tag = h->tags.head) != NULL) {
174: h->tags.head = tag->next;
1.30 kristaps 175: free(tag);
176: }
1.36 kristaps 177:
178: if (h->symtab)
179: chars_free(h->symtab);
1.53 kristaps 180:
1.30 kristaps 181: free(h);
1.10 kristaps 182: }
1.2 kristaps 183:
1.33 kristaps 184:
1.51 kristaps 185: void
1.29 kristaps 186: print_gen_head(struct html *h)
187: {
1.41 kristaps 188: struct htmlpair tag[4];
189:
190: tag[0].key = ATTR_HTTPEQUIV;
191: tag[0].val = "Content-Type";
192: tag[1].key = ATTR_CONTENT;
193: tag[1].val = "text/html; charset=utf-8";
194: print_otag(h, TAG_META, 2, tag);
195:
196: tag[0].key = ATTR_NAME;
197: tag[0].val = "resource-type";
198: tag[1].key = ATTR_CONTENT;
199: tag[1].val = "document";
200: print_otag(h, TAG_META, 2, tag);
201:
202: if (h->style) {
203: tag[0].key = ATTR_REL;
204: tag[0].val = "stylesheet";
205: tag[1].key = ATTR_HREF;
206: tag[1].val = h->style;
207: tag[2].key = ATTR_TYPE;
208: tag[2].val = "text/css";
209: tag[3].key = ATTR_MEDIA;
210: tag[3].val = "all";
211: print_otag(h, TAG_LINK, 4, tag);
212: }
1.4 kristaps 213: }
214:
1.33 kristaps 215:
1.29 kristaps 216: static void
1.83 kristaps 217: print_spec(struct html *h, const char *p, size_t len)
1.32 kristaps 218: {
219: const char *rhs;
220: size_t sz;
221:
1.83 kristaps 222: rhs = chars_a2ascii(h->symtab, p, len, &sz);
1.32 kristaps 223:
224: if (NULL == rhs)
225: return;
1.76 kristaps 226: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 227: }
228:
1.33 kristaps 229:
1.32 kristaps 230: static void
1.83 kristaps 231: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 232: {
233: const char *rhs;
234: size_t sz;
235:
1.83 kristaps 236: rhs = chars_a2res(h->symtab, p, len, &sz);
1.32 kristaps 237:
238: if (NULL == rhs)
239: return;
1.76 kristaps 240: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 241: }
242:
1.33 kristaps 243:
1.90 kristaps 244: struct tag *
245: print_ofont(struct html *h, enum htmlfont font)
246: {
247: struct htmlpair tag;
248:
249: h->metal = h->metac;
250: h->metac = font;
251:
252: /* FIXME: DECO_ROMAN should just close out preexisting. */
253:
1.91 kristaps 254: if (h->metaf && h->tags.head == h->metaf)
1.90 kristaps 255: print_tagq(h, h->metaf);
256:
257: PAIR_CLASS_INIT(&tag, htmlfonts[font]);
258: h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
259: return(h->metaf);
260: }
261:
262:
1.88 kristaps 263: static void
264: print_metaf(struct html *h, enum roffdeco deco)
265: {
1.90 kristaps 266: enum htmlfont font;
1.88 kristaps 267:
268: switch (deco) {
1.90 kristaps 269: case (DECO_PREVIOUS):
270: font = h->metal;
1.88 kristaps 271: break;
272: case (DECO_ITALIC):
1.90 kristaps 273: font = HTMLFONT_ITALIC;
274: break;
275: case (DECO_BOLD):
276: font = HTMLFONT_BOLD;
1.88 kristaps 277: break;
278: case (DECO_ROMAN):
1.90 kristaps 279: font = HTMLFONT_NONE;
1.88 kristaps 280: break;
281: default:
282: abort();
283: /* NOTREACHED */
284: }
285:
1.90 kristaps 286: (void)print_ofont(h, font);
1.88 kristaps 287: }
288:
289:
1.85 kristaps 290: static int
1.88 kristaps 291: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 292: {
1.77 kristaps 293: size_t sz;
1.85 kristaps 294: int len, nospace;
1.82 kristaps 295: const char *seq;
296: enum roffdeco deco;
1.14 kristaps 297:
1.85 kristaps 298: nospace = 0;
299:
1.32 kristaps 300: for (; *p; p++) {
1.77 kristaps 301: sz = strcspn(p, "\\<>&");
302:
303: fwrite(p, 1, sz, stdout);
1.80 kristaps 304: p += /* LINTED */
305: sz;
1.77 kristaps 306:
1.82 kristaps 307: if ('<' == *p) {
308: printf("<");
309: continue;
310: } else if ('>' == *p) {
311: printf(">");
312: continue;
313: } else if ('&' == *p) {
314: printf("&");
1.34 kristaps 315: continue;
1.77 kristaps 316: } else if ('\0' == *p)
317: break;
318:
1.82 kristaps 319: seq = ++p;
320: len = a2roffdeco(&deco, &seq, &sz);
321:
322: switch (deco) {
323: case (DECO_RESERVED):
324: print_res(h, seq, sz);
325: break;
326: case (DECO_SPECIAL):
327: print_spec(h, seq, sz);
328: break;
1.90 kristaps 329: case (DECO_PREVIOUS):
330: /* FALLTHROUGH */
1.88 kristaps 331: case (DECO_BOLD):
332: /* FALLTHROUGH */
333: case (DECO_ITALIC):
334: /* FALLTHROUGH */
335: case (DECO_ROMAN):
336: if (norecurse)
337: break;
338: print_metaf(h, deco);
339: break;
1.82 kristaps 340: default:
341: break;
342: }
343:
344: p += len - 1;
1.84 kristaps 345:
346: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
1.85 kristaps 347: nospace = 1;
1.32 kristaps 348: }
1.85 kristaps 349:
350: return(nospace);
1.14 kristaps 351: }
352:
353:
1.51 kristaps 354: struct tag *
1.29 kristaps 355: print_otag(struct html *h, enum htmltag tag,
356: int sz, const struct htmlpair *p)
1.14 kristaps 357: {
1.29 kristaps 358: int i;
1.30 kristaps 359: struct tag *t;
360:
361: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.72 kristaps 362: t = malloc(sizeof(struct tag));
363: if (NULL == t) {
1.75 kristaps 364: perror(NULL);
1.72 kristaps 365: exit(EXIT_FAILURE);
366: }
1.30 kristaps 367: t->tag = tag;
1.66 kristaps 368: t->next = h->tags.head;
369: h->tags.head = t;
1.30 kristaps 370: } else
371: t = NULL;
1.29 kristaps 372:
373: if ( ! (HTML_NOSPACE & h->flags))
1.30 kristaps 374: if ( ! (HTML_CLRLINE & htmltags[tag].flags))
1.78 kristaps 375: putchar(' ');
1.29 kristaps 376:
377: printf("<%s", htmltags[tag].name);
378: for (i = 0; i < sz; i++) {
379: printf(" %s=\"", htmlattrs[p[i].key]);
380: assert(p->val);
1.88 kristaps 381: (void)print_encode(h, p[i].val, 1);
1.78 kristaps 382: putchar('\"');
1.29 kristaps 383: }
1.93 ! kristaps 384:
! 385: if (HTML_AUTOCLOSE & htmltags[tag].flags)
! 386: switch (h->type) {
! 387: case (HTML_XHTML_1_0_STRICT):
! 388: putchar('/');
! 389: break;
! 390: default:
! 391: break;
! 392: }
! 393:
1.78 kristaps 394: putchar('>');
1.14 kristaps 395:
1.29 kristaps 396: h->flags |= HTML_NOSPACE;
1.30 kristaps 397: return(t);
1.14 kristaps 398: }
399:
400:
1.29 kristaps 401: static void
402: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 403: {
404:
1.29 kristaps 405: printf("</%s>", htmltags[tag].name);
1.71 kristaps 406: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 407: h->flags |= HTML_NOSPACE;
1.78 kristaps 408: putchar('\n');
1.87 kristaps 409: }
1.14 kristaps 410: }
411:
412:
1.51 kristaps 413: void
1.93 ! kristaps 414: print_gen_decls(struct html *h)
1.1 kristaps 415: {
1.93 ! kristaps 416:
! 417: print_xmltype(h);
! 418: print_doctype(h);
! 419: }
! 420:
! 421:
! 422: static void
! 423: print_xmltype(struct html *h)
! 424: {
! 425: const char *decl;
! 426:
! 427: switch (h->type) {
! 428: case (HTML_XHTML_1_0_STRICT):
! 429: decl = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
! 430: break;
! 431: default:
! 432: decl = NULL;
! 433: break;
! 434: }
! 435:
! 436: if (NULL == decl)
! 437: return;
! 438:
! 439: printf("%s\n", decl);
! 440: }
! 441:
! 442:
! 443: static void
! 444: print_doctype(struct html *h)
! 445: {
! 446: const char *doctype;
! 447: const char *dtd;
! 448:
! 449: switch (h->type) {
! 450: case (HTML_HTML_4_01_STRICT):
! 451: doctype = "-//W3C//DTD HTML 4.01//EN";
! 452: dtd = "http://www.w3.org/TR/html4/strict.dtd";
! 453: break;
! 454: default:
! 455: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
! 456: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
! 457: break;
! 458: }
! 459:
! 460: printf("<!DOCTYPE HTML PUBLIC \"%s\" \"%s\">\n", doctype, dtd);
1.1 kristaps 461: }
462:
463:
1.51 kristaps 464: void
1.29 kristaps 465: print_text(struct html *h, const char *p)
1.1 kristaps 466: {
467:
1.29 kristaps 468: if (*p && 0 == *(p + 1))
469: switch (*p) {
470: case('.'):
471: /* FALLTHROUGH */
472: case(','):
473: /* FALLTHROUGH */
474: case(';'):
475: /* FALLTHROUGH */
476: case(':'):
477: /* FALLTHROUGH */
478: case('?'):
479: /* FALLTHROUGH */
480: case('!'):
481: /* FALLTHROUGH */
482: case(')'):
483: /* FALLTHROUGH */
484: case(']'):
485: /* FALLTHROUGH */
486: case('}'):
1.52 kristaps 487: if ( ! (HTML_IGNDELIM & h->flags))
488: h->flags |= HTML_NOSPACE;
1.30 kristaps 489: break;
1.29 kristaps 490: default:
491: break;
492: }
1.1 kristaps 493:
1.29 kristaps 494: if ( ! (h->flags & HTML_NOSPACE))
1.78 kristaps 495: putchar(' ');
1.30 kristaps 496:
1.86 kristaps 497: assert(p);
1.88 kristaps 498: if ( ! print_encode(h, p, 0))
1.86 kristaps 499: h->flags &= ~HTML_NOSPACE;
1.8 kristaps 500:
1.29 kristaps 501: if (*p && 0 == *(p + 1))
502: switch (*p) {
503: case('('):
504: /* FALLTHROUGH */
505: case('['):
506: /* FALLTHROUGH */
507: case('{'):
508: h->flags |= HTML_NOSPACE;
1.30 kristaps 509: break;
1.29 kristaps 510: default:
511: break;
512: }
1.1 kristaps 513: }
1.30 kristaps 514:
515:
1.51 kristaps 516: void
1.30 kristaps 517: print_tagq(struct html *h, const struct tag *until)
518: {
519: struct tag *tag;
520:
1.66 kristaps 521: while ((tag = h->tags.head) != NULL) {
1.89 kristaps 522: if (tag == h->metaf)
523: h->metaf = NULL;
1.30 kristaps 524: print_ctag(h, tag->tag);
1.66 kristaps 525: h->tags.head = tag->next;
1.30 kristaps 526: free(tag);
527: if (until && tag == until)
528: return;
529: }
530: }
531:
532:
1.51 kristaps 533: void
1.30 kristaps 534: print_stagq(struct html *h, const struct tag *suntil)
535: {
536: struct tag *tag;
537:
1.66 kristaps 538: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 539: if (suntil && tag == suntil)
540: return;
1.89 kristaps 541: if (tag == h->metaf)
542: h->metaf = NULL;
1.30 kristaps 543: print_ctag(h, tag->tag);
1.66 kristaps 544: h->tags.head = tag->next;
1.30 kristaps 545: free(tag);
546: }
547: }
1.55 kristaps 548:
549:
550: void
551: bufinit(struct html *h)
552: {
553:
554: h->buf[0] = '\0';
555: h->buflen = 0;
556: }
557:
558:
559: void
1.58 kristaps 560: bufcat_style(struct html *h, const char *key, const char *val)
561: {
562:
563: bufcat(h, key);
564: bufncat(h, ":", 1);
565: bufcat(h, val);
566: bufncat(h, ";", 1);
567: }
568:
569:
570: void
1.55 kristaps 571: bufcat(struct html *h, const char *p)
572: {
573:
574: bufncat(h, p, strlen(p));
575: }
576:
577:
578: void
579: buffmt(struct html *h, const char *fmt, ...)
580: {
581: va_list ap;
582:
583: va_start(ap, fmt);
1.56 kristaps 584: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 585: BUFSIZ - h->buflen - 1, fmt, ap);
586: va_end(ap);
587: h->buflen = strlen(h->buf);
588: }
589:
590:
591: void
592: bufncat(struct html *h, const char *p, size_t sz)
593: {
594:
595: if (h->buflen + sz > BUFSIZ - 1)
596: sz = BUFSIZ - 1 - h->buflen;
597:
598: (void)strncat(h->buf, p, sz);
599: h->buflen += sz;
600: }
601:
602:
603: void
604: buffmt_includes(struct html *h, const char *name)
605: {
606: const char *p, *pp;
607:
608: pp = h->base_includes;
1.61 kristaps 609:
610: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 611: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 612: switch (*(p + 1)) {
613: case('I'):
614: bufcat(h, name);
615: break;
616: default:
617: bufncat(h, p, 2);
618: break;
619: }
620: pp = p + 2;
621: }
622: if (pp)
623: bufcat(h, pp);
624: }
625:
626:
627: void
628: buffmt_man(struct html *h,
629: const char *name, const char *sec)
630: {
631: const char *p, *pp;
632:
633: pp = h->base_man;
1.61 kristaps 634:
635: /* LINTED */
636: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 637: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 638: switch (*(p + 1)) {
639: case('S'):
1.58 kristaps 640: bufcat(h, sec ? sec : "1");
1.55 kristaps 641: break;
642: case('N'):
1.58 kristaps 643: buffmt(h, name);
1.55 kristaps 644: break;
645: default:
646: bufncat(h, p, 2);
647: break;
648: }
649: pp = p + 2;
650: }
651: if (pp)
652: bufcat(h, pp);
653: }
1.58 kristaps 654:
655:
656: void
657: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
658: {
1.62 kristaps 659: double v;
1.63 kristaps 660: const char *u;
1.58 kristaps 661:
662: v = su->scale;
663:
664: switch (su->unit) {
665: case (SCALE_CM):
666: u = "cm";
667: break;
668: case (SCALE_IN):
669: u = "in";
670: break;
671: case (SCALE_PC):
672: u = "pc";
673: break;
674: case (SCALE_PT):
675: u = "pt";
676: break;
1.59 kristaps 677: case (SCALE_EM):
678: u = "em";
679: break;
1.58 kristaps 680: case (SCALE_MM):
681: if (0 == (v /= 100))
682: v = 1;
683: u = "em";
684: break;
1.59 kristaps 685: case (SCALE_EN):
686: u = "ex";
687: break;
688: case (SCALE_BU):
689: u = "ex";
690: break;
1.58 kristaps 691: case (SCALE_VS):
692: u = "em";
693: break;
694: default:
695: u = "ex";
696: break;
697: }
698:
1.62 kristaps 699: if (su->pt)
700: buffmt(h, "%s: %f%s;", p, v, u);
701: else
702: /* LINTED */
703: buffmt(h, "%s: %d%s;", p, (int)v, u);
1.58 kristaps 704: }
1.65 kristaps 705:
1.68 kristaps 706:
707: void
1.70 kristaps 708: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 709: {
1.70 kristaps 710: int ssz;
1.68 kristaps 711:
712: assert(sz);
713:
714: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
715:
1.70 kristaps 716: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 717: /* Jump to end. */ ;
718:
1.70 kristaps 719: assert(sz > 2);
1.68 kristaps 720:
1.70 kristaps 721: /* We can't start with a number (bah). */
1.68 kristaps 722:
1.70 kristaps 723: *dst++ = 'x';
1.68 kristaps 724: *dst = '\0';
1.70 kristaps 725: sz--;
726:
727: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 728: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 729: sz -= ssz;
730: dst += ssz;
731: }
1.68 kristaps 732: }
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