Annotation of mandoc/html.c, Revision 1.100
1.100 ! kristaps 1: /* $Id: html.c,v 1.99 2010/04/12 19:45:39 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:
1.100 ! kristaps 32: #include "mandoc.h"
1.58 kristaps 33: #include "out.h"
1.32 kristaps 34: #include "chars.h"
1.51 kristaps 35: #include "html.h"
1.64 kristaps 36: #include "main.h"
1.2 kristaps 37:
1.63 kristaps 38: #define UNCONST(a) ((void *)(uintptr_t)(const void *)(a))
39:
1.29 kristaps 40: struct htmldata {
1.63 kristaps 41: const char *name;
1.29 kristaps 42: int flags;
1.30 kristaps 43: #define HTML_CLRLINE (1 << 0)
44: #define HTML_NOSTACK (1 << 1)
1.93 kristaps 45: #define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */
1.29 kristaps 46: };
1.7 kristaps 47:
1.29 kristaps 48: static const struct htmldata htmltags[TAG_MAX] = {
1.30 kristaps 49: {"html", HTML_CLRLINE}, /* TAG_HTML */
50: {"head", HTML_CLRLINE}, /* TAG_HEAD */
51: {"body", HTML_CLRLINE}, /* TAG_BODY */
1.93 kristaps 52: {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */
1.33 kristaps 53: {"title", HTML_CLRLINE}, /* TAG_TITLE */
1.30 kristaps 54: {"div", HTML_CLRLINE}, /* TAG_DIV */
1.29 kristaps 55: {"h1", 0}, /* TAG_H1 */
56: {"h2", 0}, /* TAG_H2 */
57: {"span", 0}, /* TAG_SPAN */
1.99 kristaps 58: {"link", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */
1.93 kristaps 59: {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
1.30 kristaps 60: {"a", 0}, /* TAG_A */
1.33 kristaps 61: {"table", HTML_CLRLINE}, /* TAG_TABLE */
1.93 kristaps 62: {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
1.33 kristaps 63: {"tr", HTML_CLRLINE}, /* TAG_TR */
64: {"td", HTML_CLRLINE}, /* TAG_TD */
1.34 kristaps 65: {"li", HTML_CLRLINE}, /* TAG_LI */
66: {"ul", HTML_CLRLINE}, /* TAG_UL */
67: {"ol", HTML_CLRLINE}, /* TAG_OL */
1.29 kristaps 68: };
1.10 kristaps 69:
1.90 kristaps 70: static const char *const htmlfonts[HTMLFONT_MAX] = {
71: "roman",
72: "bold",
73: "italic"
74: };
75:
1.82 kristaps 76: static const char *const htmlattrs[ATTR_MAX] = {
1.29 kristaps 77: "http-equiv",
78: "content",
79: "name",
80: "rel",
81: "href",
82: "type",
83: "media",
1.33 kristaps 84: "class",
85: "style",
86: "width",
87: "valign",
1.54 kristaps 88: "target",
1.57 kristaps 89: "id",
1.67 kristaps 90: "summary",
1.29 kristaps 91: };
1.10 kristaps 92:
1.83 kristaps 93: static void print_spec(struct html *, const char *, size_t);
94: static void print_res(struct html *, const char *, size_t);
1.82 kristaps 95: static void print_ctag(struct html *, enum htmltag);
1.93 kristaps 96: static void print_doctype(struct html *);
97: static void print_xmltype(struct html *);
1.88 kristaps 98: static int print_encode(struct html *, const char *, int);
99: static void print_metaf(struct html *, enum roffdeco);
1.94 kristaps 100: static void print_attr(struct html *,
101: const char *, const char *);
1.93 kristaps 102: static void *ml_alloc(char *, enum htmltype);
1.82 kristaps 103:
104:
1.93 kristaps 105: static void *
106: ml_alloc(char *outopts, enum htmltype type)
1.10 kristaps 107: {
1.30 kristaps 108: struct html *h;
1.63 kristaps 109: const char *toks[4];
110: char *v;
1.43 kristaps 111:
112: toks[0] = "style";
1.53 kristaps 113: toks[1] = "man";
1.54 kristaps 114: toks[2] = "includes";
115: toks[3] = NULL;
1.30 kristaps 116:
1.72 kristaps 117: h = calloc(1, sizeof(struct html));
118: if (NULL == h) {
1.75 kristaps 119: perror(NULL);
1.72 kristaps 120: exit(EXIT_FAILURE);
121: }
1.10 kristaps 122:
1.93 kristaps 123: h->type = type;
1.66 kristaps 124: h->tags.head = NULL;
125: h->ords.head = NULL;
1.72 kristaps 126: h->symtab = chars_init(CHARS_HTML);
1.41 kristaps 127:
1.47 kristaps 128: while (outopts && *outopts)
1.63 kristaps 129: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 130: case (0):
131: h->style = v;
132: break;
133: case (1):
1.53 kristaps 134: h->base_man = v;
1.43 kristaps 135: break;
1.54 kristaps 136: case (2):
137: h->base_includes = v;
138: break;
1.43 kristaps 139: default:
140: break;
141: }
142:
1.30 kristaps 143: return(h);
1.29 kristaps 144: }
1.10 kristaps 145:
1.93 kristaps 146: void *
147: html_alloc(char *outopts)
148: {
149:
150: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
151: }
152:
153:
154: void *
155: xhtml_alloc(char *outopts)
156: {
157:
158: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
159: }
160:
1.33 kristaps 161:
1.29 kristaps 162: void
163: html_free(void *p)
164: {
1.30 kristaps 165: struct tag *tag;
1.37 kristaps 166: struct ord *ord;
1.30 kristaps 167: struct html *h;
168:
169: h = (struct html *)p;
1.10 kristaps 170:
1.66 kristaps 171: while ((ord = h->ords.head) != NULL) {
172: h->ords.head = ord->next;
1.37 kristaps 173: free(ord);
174: }
175:
1.66 kristaps 176: while ((tag = h->tags.head) != NULL) {
177: h->tags.head = tag->next;
1.30 kristaps 178: free(tag);
179: }
1.36 kristaps 180:
181: if (h->symtab)
182: chars_free(h->symtab);
1.53 kristaps 183:
1.30 kristaps 184: free(h);
1.10 kristaps 185: }
1.2 kristaps 186:
1.33 kristaps 187:
1.51 kristaps 188: void
1.29 kristaps 189: print_gen_head(struct html *h)
190: {
1.41 kristaps 191: struct htmlpair tag[4];
192:
193: tag[0].key = ATTR_HTTPEQUIV;
194: tag[0].val = "Content-Type";
195: tag[1].key = ATTR_CONTENT;
196: tag[1].val = "text/html; charset=utf-8";
197: print_otag(h, TAG_META, 2, tag);
198:
199: tag[0].key = ATTR_NAME;
200: tag[0].val = "resource-type";
201: tag[1].key = ATTR_CONTENT;
202: tag[1].val = "document";
203: print_otag(h, TAG_META, 2, tag);
204:
205: if (h->style) {
206: tag[0].key = ATTR_REL;
207: tag[0].val = "stylesheet";
208: tag[1].key = ATTR_HREF;
209: tag[1].val = h->style;
210: tag[2].key = ATTR_TYPE;
211: tag[2].val = "text/css";
212: tag[3].key = ATTR_MEDIA;
213: tag[3].val = "all";
214: print_otag(h, TAG_LINK, 4, tag);
215: }
1.4 kristaps 216: }
217:
1.33 kristaps 218:
1.29 kristaps 219: static void
1.83 kristaps 220: print_spec(struct html *h, const char *p, size_t len)
1.32 kristaps 221: {
222: const char *rhs;
223: size_t sz;
224:
1.83 kristaps 225: rhs = chars_a2ascii(h->symtab, p, len, &sz);
1.32 kristaps 226:
227: if (NULL == rhs)
228: return;
1.76 kristaps 229: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 230: }
231:
1.33 kristaps 232:
1.32 kristaps 233: static void
1.83 kristaps 234: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 235: {
236: const char *rhs;
237: size_t sz;
238:
1.83 kristaps 239: rhs = chars_a2res(h->symtab, p, len, &sz);
1.32 kristaps 240:
241: if (NULL == rhs)
242: return;
1.76 kristaps 243: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 244: }
245:
1.33 kristaps 246:
1.90 kristaps 247: struct tag *
248: print_ofont(struct html *h, enum htmlfont font)
249: {
250: struct htmlpair tag;
251:
252: h->metal = h->metac;
253: h->metac = font;
254:
255: /* FIXME: DECO_ROMAN should just close out preexisting. */
256:
1.91 kristaps 257: if (h->metaf && h->tags.head == h->metaf)
1.90 kristaps 258: print_tagq(h, h->metaf);
259:
260: PAIR_CLASS_INIT(&tag, htmlfonts[font]);
261: h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
262: return(h->metaf);
263: }
264:
265:
1.88 kristaps 266: static void
267: print_metaf(struct html *h, enum roffdeco deco)
268: {
1.90 kristaps 269: enum htmlfont font;
1.88 kristaps 270:
271: switch (deco) {
1.90 kristaps 272: case (DECO_PREVIOUS):
273: font = h->metal;
1.88 kristaps 274: break;
275: case (DECO_ITALIC):
1.90 kristaps 276: font = HTMLFONT_ITALIC;
277: break;
278: case (DECO_BOLD):
279: font = HTMLFONT_BOLD;
1.88 kristaps 280: break;
281: case (DECO_ROMAN):
1.90 kristaps 282: font = HTMLFONT_NONE;
1.88 kristaps 283: break;
284: default:
285: abort();
286: /* NOTREACHED */
287: }
288:
1.90 kristaps 289: (void)print_ofont(h, font);
1.88 kristaps 290: }
291:
292:
1.85 kristaps 293: static int
1.88 kristaps 294: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 295: {
1.77 kristaps 296: size_t sz;
1.85 kristaps 297: int len, nospace;
1.82 kristaps 298: const char *seq;
299: enum roffdeco deco;
1.100 ! kristaps 300: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 301:
1.85 kristaps 302: nospace = 0;
303:
1.32 kristaps 304: for (; *p; p++) {
1.100 ! kristaps 305: sz = strcspn(p, rejs);
1.77 kristaps 306:
307: fwrite(p, 1, sz, stdout);
1.80 kristaps 308: p += /* LINTED */
309: sz;
1.77 kristaps 310:
1.82 kristaps 311: if ('<' == *p) {
312: printf("<");
313: continue;
314: } else if ('>' == *p) {
315: printf(">");
316: continue;
317: } else if ('&' == *p) {
318: printf("&");
1.34 kristaps 319: continue;
1.100 ! kristaps 320: } else if (ASCII_HYPH == *p) {
! 321: /*
! 322: * Note: "soft hyphens" aren't graphically
! 323: * displayed when not breaking the text; we want
! 324: * them to be displayed.
! 325: */
! 326: /*printf("­");*/
! 327: putchar('-');
! 328: continue;
1.77 kristaps 329: } else if ('\0' == *p)
330: break;
331:
1.82 kristaps 332: seq = ++p;
333: len = a2roffdeco(&deco, &seq, &sz);
334:
335: switch (deco) {
336: case (DECO_RESERVED):
337: print_res(h, seq, sz);
338: break;
339: case (DECO_SPECIAL):
340: print_spec(h, seq, sz);
341: break;
1.90 kristaps 342: case (DECO_PREVIOUS):
343: /* FALLTHROUGH */
1.88 kristaps 344: case (DECO_BOLD):
345: /* FALLTHROUGH */
346: case (DECO_ITALIC):
347: /* FALLTHROUGH */
348: case (DECO_ROMAN):
349: if (norecurse)
350: break;
351: print_metaf(h, deco);
352: break;
1.82 kristaps 353: default:
354: break;
355: }
356:
357: p += len - 1;
1.84 kristaps 358:
359: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
1.85 kristaps 360: nospace = 1;
1.32 kristaps 361: }
1.85 kristaps 362:
363: return(nospace);
1.14 kristaps 364: }
365:
366:
1.94 kristaps 367: static void
368: print_attr(struct html *h, const char *key, const char *val)
369: {
370: printf(" %s=\"", key);
371: (void)print_encode(h, val, 1);
372: putchar('\"');
373: }
374:
375:
1.51 kristaps 376: struct tag *
1.29 kristaps 377: print_otag(struct html *h, enum htmltag tag,
378: int sz, const struct htmlpair *p)
1.14 kristaps 379: {
1.29 kristaps 380: int i;
1.30 kristaps 381: struct tag *t;
382:
1.94 kristaps 383: /* Push this tags onto the stack of open scopes. */
384:
1.30 kristaps 385: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.72 kristaps 386: t = malloc(sizeof(struct tag));
387: if (NULL == t) {
1.75 kristaps 388: perror(NULL);
1.72 kristaps 389: exit(EXIT_FAILURE);
390: }
1.30 kristaps 391: t->tag = tag;
1.66 kristaps 392: t->next = h->tags.head;
393: h->tags.head = t;
1.30 kristaps 394: } else
395: t = NULL;
1.29 kristaps 396:
397: if ( ! (HTML_NOSPACE & h->flags))
1.30 kristaps 398: if ( ! (HTML_CLRLINE & htmltags[tag].flags))
1.78 kristaps 399: putchar(' ');
1.29 kristaps 400:
1.94 kristaps 401: /* Print out the tag name and attributes. */
402:
1.29 kristaps 403: printf("<%s", htmltags[tag].name);
1.94 kristaps 404: for (i = 0; i < sz; i++)
405: print_attr(h, htmlattrs[p[i].key], p[i].val);
406:
407: /* Add non-overridable attributes. */
408:
409: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
410: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
411: print_attr(h, "xml:lang", "en");
412: print_attr(h, "lang", "en");
1.29 kristaps 413: }
1.93 kristaps 414:
1.94 kristaps 415: /* Accomodate for XML "well-formed" singleton escaping. */
416:
1.93 kristaps 417: if (HTML_AUTOCLOSE & htmltags[tag].flags)
418: switch (h->type) {
419: case (HTML_XHTML_1_0_STRICT):
420: putchar('/');
421: break;
422: default:
423: break;
424: }
425:
1.78 kristaps 426: putchar('>');
1.14 kristaps 427:
1.29 kristaps 428: h->flags |= HTML_NOSPACE;
1.30 kristaps 429: return(t);
1.14 kristaps 430: }
431:
432:
1.29 kristaps 433: static void
434: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 435: {
436:
1.29 kristaps 437: printf("</%s>", htmltags[tag].name);
1.71 kristaps 438: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 439: h->flags |= HTML_NOSPACE;
1.78 kristaps 440: putchar('\n');
1.87 kristaps 441: }
1.14 kristaps 442: }
443:
444:
1.51 kristaps 445: void
1.93 kristaps 446: print_gen_decls(struct html *h)
1.1 kristaps 447: {
1.93 kristaps 448:
449: print_xmltype(h);
450: print_doctype(h);
451: }
452:
453:
454: static void
455: print_xmltype(struct html *h)
456: {
457:
1.100 ! kristaps 458: if (HTML_XHTML_1_0_STRICT == h->type)
! 459: printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.93 kristaps 460: }
461:
462:
463: static void
464: print_doctype(struct html *h)
465: {
466: const char *doctype;
467: const char *dtd;
1.96 kristaps 468: const char *name;
1.93 kristaps 469:
470: switch (h->type) {
471: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 472: name = "HTML";
1.93 kristaps 473: doctype = "-//W3C//DTD HTML 4.01//EN";
474: dtd = "http://www.w3.org/TR/html4/strict.dtd";
475: break;
476: default:
1.96 kristaps 477: name = "html";
1.93 kristaps 478: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
479: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
480: break;
481: }
482:
1.96 kristaps 483: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
484: name, doctype, dtd);
1.1 kristaps 485: }
486:
487:
1.51 kristaps 488: void
1.29 kristaps 489: print_text(struct html *h, const char *p)
1.1 kristaps 490: {
491:
1.29 kristaps 492: if (*p && 0 == *(p + 1))
493: switch (*p) {
494: case('.'):
495: /* FALLTHROUGH */
496: case(','):
497: /* FALLTHROUGH */
498: case(';'):
499: /* FALLTHROUGH */
500: case(':'):
501: /* FALLTHROUGH */
502: case('?'):
503: /* FALLTHROUGH */
504: case('!'):
505: /* FALLTHROUGH */
506: case(')'):
507: /* FALLTHROUGH */
508: case(']'):
1.52 kristaps 509: if ( ! (HTML_IGNDELIM & h->flags))
510: h->flags |= HTML_NOSPACE;
1.30 kristaps 511: break;
1.29 kristaps 512: default:
513: break;
514: }
1.1 kristaps 515:
1.29 kristaps 516: if ( ! (h->flags & HTML_NOSPACE))
1.78 kristaps 517: putchar(' ');
1.30 kristaps 518:
1.86 kristaps 519: assert(p);
1.88 kristaps 520: if ( ! print_encode(h, p, 0))
1.86 kristaps 521: h->flags &= ~HTML_NOSPACE;
1.8 kristaps 522:
1.98 kristaps 523: /*
524: * Note that we don't process the pipe: the parser sees it as
525: * punctuation, but we don't in terms of typography.
526: */
1.29 kristaps 527: if (*p && 0 == *(p + 1))
528: switch (*p) {
529: case('('):
530: /* FALLTHROUGH */
531: case('['):
532: h->flags |= HTML_NOSPACE;
1.30 kristaps 533: break;
1.29 kristaps 534: default:
535: break;
536: }
1.1 kristaps 537: }
1.30 kristaps 538:
539:
1.51 kristaps 540: void
1.30 kristaps 541: print_tagq(struct html *h, const struct tag *until)
542: {
543: struct tag *tag;
544:
1.66 kristaps 545: while ((tag = h->tags.head) != NULL) {
1.89 kristaps 546: if (tag == h->metaf)
547: h->metaf = NULL;
1.30 kristaps 548: print_ctag(h, tag->tag);
1.66 kristaps 549: h->tags.head = tag->next;
1.30 kristaps 550: free(tag);
551: if (until && tag == until)
552: return;
553: }
554: }
555:
556:
1.51 kristaps 557: void
1.30 kristaps 558: print_stagq(struct html *h, const struct tag *suntil)
559: {
560: struct tag *tag;
561:
1.66 kristaps 562: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 563: if (suntil && tag == suntil)
564: return;
1.89 kristaps 565: if (tag == h->metaf)
566: h->metaf = NULL;
1.30 kristaps 567: print_ctag(h, tag->tag);
1.66 kristaps 568: h->tags.head = tag->next;
1.30 kristaps 569: free(tag);
570: }
571: }
1.55 kristaps 572:
573:
574: void
575: bufinit(struct html *h)
576: {
577:
578: h->buf[0] = '\0';
579: h->buflen = 0;
580: }
581:
582:
583: void
1.58 kristaps 584: bufcat_style(struct html *h, const char *key, const char *val)
585: {
586:
587: bufcat(h, key);
588: bufncat(h, ":", 1);
589: bufcat(h, val);
590: bufncat(h, ";", 1);
591: }
592:
593:
594: void
1.55 kristaps 595: bufcat(struct html *h, const char *p)
596: {
597:
598: bufncat(h, p, strlen(p));
599: }
600:
601:
602: void
603: buffmt(struct html *h, const char *fmt, ...)
604: {
605: va_list ap;
606:
607: va_start(ap, fmt);
1.56 kristaps 608: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 609: BUFSIZ - h->buflen - 1, fmt, ap);
610: va_end(ap);
611: h->buflen = strlen(h->buf);
612: }
613:
614:
615: void
616: bufncat(struct html *h, const char *p, size_t sz)
617: {
618:
619: if (h->buflen + sz > BUFSIZ - 1)
620: sz = BUFSIZ - 1 - h->buflen;
621:
622: (void)strncat(h->buf, p, sz);
623: h->buflen += sz;
624: }
625:
626:
627: void
628: buffmt_includes(struct html *h, const char *name)
629: {
630: const char *p, *pp;
631:
632: pp = h->base_includes;
1.61 kristaps 633:
634: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 635: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 636: switch (*(p + 1)) {
637: case('I'):
638: bufcat(h, name);
639: break;
640: default:
641: bufncat(h, p, 2);
642: break;
643: }
644: pp = p + 2;
645: }
646: if (pp)
647: bufcat(h, pp);
648: }
649:
650:
651: void
652: buffmt_man(struct html *h,
653: const char *name, const char *sec)
654: {
655: const char *p, *pp;
656:
657: pp = h->base_man;
1.61 kristaps 658:
659: /* LINTED */
660: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 661: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 662: switch (*(p + 1)) {
663: case('S'):
1.58 kristaps 664: bufcat(h, sec ? sec : "1");
1.55 kristaps 665: break;
666: case('N'):
1.58 kristaps 667: buffmt(h, name);
1.55 kristaps 668: break;
669: default:
670: bufncat(h, p, 2);
671: break;
672: }
673: pp = p + 2;
674: }
675: if (pp)
676: bufcat(h, pp);
677: }
1.58 kristaps 678:
679:
680: void
681: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
682: {
1.62 kristaps 683: double v;
1.63 kristaps 684: const char *u;
1.58 kristaps 685:
686: v = su->scale;
687:
688: switch (su->unit) {
689: case (SCALE_CM):
690: u = "cm";
691: break;
692: case (SCALE_IN):
693: u = "in";
694: break;
695: case (SCALE_PC):
696: u = "pc";
697: break;
698: case (SCALE_PT):
699: u = "pt";
700: break;
1.59 kristaps 701: case (SCALE_EM):
702: u = "em";
703: break;
1.58 kristaps 704: case (SCALE_MM):
705: if (0 == (v /= 100))
706: v = 1;
707: u = "em";
708: break;
1.59 kristaps 709: case (SCALE_EN):
710: u = "ex";
711: break;
712: case (SCALE_BU):
713: u = "ex";
714: break;
1.58 kristaps 715: case (SCALE_VS):
716: u = "em";
717: break;
718: default:
719: u = "ex";
720: break;
721: }
722:
1.62 kristaps 723: if (su->pt)
724: buffmt(h, "%s: %f%s;", p, v, u);
725: else
726: /* LINTED */
727: buffmt(h, "%s: %d%s;", p, (int)v, u);
1.58 kristaps 728: }
1.65 kristaps 729:
1.68 kristaps 730:
731: void
1.70 kristaps 732: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 733: {
1.70 kristaps 734: int ssz;
1.68 kristaps 735:
736: assert(sz);
737:
738: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
739:
1.70 kristaps 740: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 741: /* Jump to end. */ ;
742:
1.70 kristaps 743: assert(sz > 2);
1.68 kristaps 744:
1.70 kristaps 745: /* We can't start with a number (bah). */
1.68 kristaps 746:
1.70 kristaps 747: *dst++ = 'x';
1.68 kristaps 748: *dst = '\0';
1.70 kristaps 749: sz--;
750:
751: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 752: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 753: sz -= ssz;
754: dst += ssz;
755: }
1.68 kristaps 756: }
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