Annotation of mandoc/html.c, Revision 1.101
1.101 ! kristaps 1: /* $Id: html.c,v 1.100 2010/05/25 12:37:20 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"
1.63 kristaps 37:
1.29 kristaps 38: struct htmldata {
1.63 kristaps 39: const char *name;
1.29 kristaps 40: int flags;
1.30 kristaps 41: #define HTML_CLRLINE (1 << 0)
42: #define HTML_NOSTACK (1 << 1)
1.93 kristaps 43: #define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */
1.29 kristaps 44: };
1.7 kristaps 45:
1.29 kristaps 46: static const struct htmldata htmltags[TAG_MAX] = {
1.30 kristaps 47: {"html", HTML_CLRLINE}, /* TAG_HTML */
48: {"head", HTML_CLRLINE}, /* TAG_HEAD */
49: {"body", HTML_CLRLINE}, /* TAG_BODY */
1.93 kristaps 50: {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */
1.33 kristaps 51: {"title", HTML_CLRLINE}, /* TAG_TITLE */
1.30 kristaps 52: {"div", HTML_CLRLINE}, /* TAG_DIV */
1.29 kristaps 53: {"h1", 0}, /* TAG_H1 */
54: {"h2", 0}, /* TAG_H2 */
55: {"span", 0}, /* TAG_SPAN */
1.99 kristaps 56: {"link", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */
1.93 kristaps 57: {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
1.30 kristaps 58: {"a", 0}, /* TAG_A */
1.33 kristaps 59: {"table", HTML_CLRLINE}, /* TAG_TABLE */
1.93 kristaps 60: {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
1.33 kristaps 61: {"tr", HTML_CLRLINE}, /* TAG_TR */
62: {"td", HTML_CLRLINE}, /* TAG_TD */
1.34 kristaps 63: {"li", HTML_CLRLINE}, /* TAG_LI */
64: {"ul", HTML_CLRLINE}, /* TAG_UL */
65: {"ol", HTML_CLRLINE}, /* TAG_OL */
1.29 kristaps 66: };
1.10 kristaps 67:
1.90 kristaps 68: static const char *const htmlfonts[HTMLFONT_MAX] = {
69: "roman",
70: "bold",
71: "italic"
72: };
73:
1.82 kristaps 74: static const char *const htmlattrs[ATTR_MAX] = {
1.29 kristaps 75: "http-equiv",
76: "content",
77: "name",
78: "rel",
79: "href",
80: "type",
81: "media",
1.33 kristaps 82: "class",
83: "style",
84: "width",
85: "valign",
1.54 kristaps 86: "target",
1.57 kristaps 87: "id",
1.67 kristaps 88: "summary",
1.29 kristaps 89: };
1.10 kristaps 90:
1.83 kristaps 91: static void print_spec(struct html *, const char *, size_t);
92: static void print_res(struct html *, const char *, size_t);
1.82 kristaps 93: static void print_ctag(struct html *, enum htmltag);
1.93 kristaps 94: static void print_doctype(struct html *);
95: static void print_xmltype(struct html *);
1.88 kristaps 96: static int print_encode(struct html *, const char *, int);
97: static void print_metaf(struct html *, enum roffdeco);
1.94 kristaps 98: static void print_attr(struct html *,
99: const char *, const char *);
1.93 kristaps 100: static void *ml_alloc(char *, enum htmltype);
1.82 kristaps 101:
102:
1.93 kristaps 103: static void *
104: ml_alloc(char *outopts, enum htmltype type)
1.10 kristaps 105: {
1.30 kristaps 106: struct html *h;
1.63 kristaps 107: const char *toks[4];
108: char *v;
1.43 kristaps 109:
110: toks[0] = "style";
1.53 kristaps 111: toks[1] = "man";
1.54 kristaps 112: toks[2] = "includes";
113: toks[3] = NULL;
1.30 kristaps 114:
1.72 kristaps 115: h = calloc(1, sizeof(struct html));
116: if (NULL == h) {
1.75 kristaps 117: perror(NULL);
1.72 kristaps 118: exit(EXIT_FAILURE);
119: }
1.10 kristaps 120:
1.93 kristaps 121: h->type = type;
1.66 kristaps 122: h->tags.head = NULL;
123: h->ords.head = NULL;
1.72 kristaps 124: h->symtab = chars_init(CHARS_HTML);
1.41 kristaps 125:
1.47 kristaps 126: while (outopts && *outopts)
1.63 kristaps 127: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 128: case (0):
129: h->style = v;
130: break;
131: case (1):
1.53 kristaps 132: h->base_man = v;
1.43 kristaps 133: break;
1.54 kristaps 134: case (2):
135: h->base_includes = v;
136: break;
1.43 kristaps 137: default:
138: break;
139: }
140:
1.30 kristaps 141: return(h);
1.29 kristaps 142: }
1.10 kristaps 143:
1.93 kristaps 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:
1.33 kristaps 159:
1.29 kristaps 160: void
161: html_free(void *p)
162: {
1.30 kristaps 163: struct tag *tag;
1.37 kristaps 164: struct ord *ord;
1.30 kristaps 165: struct html *h;
166:
167: h = (struct html *)p;
1.10 kristaps 168:
1.66 kristaps 169: while ((ord = h->ords.head) != NULL) {
170: h->ords.head = ord->next;
1.37 kristaps 171: free(ord);
172: }
173:
1.66 kristaps 174: while ((tag = h->tags.head) != NULL) {
175: h->tags.head = tag->next;
1.30 kristaps 176: free(tag);
177: }
1.36 kristaps 178:
179: if (h->symtab)
180: chars_free(h->symtab);
1.53 kristaps 181:
1.30 kristaps 182: free(h);
1.10 kristaps 183: }
1.2 kristaps 184:
1.33 kristaps 185:
1.51 kristaps 186: void
1.29 kristaps 187: print_gen_head(struct html *h)
188: {
1.41 kristaps 189: struct htmlpair tag[4];
190:
191: tag[0].key = ATTR_HTTPEQUIV;
192: tag[0].val = "Content-Type";
193: tag[1].key = ATTR_CONTENT;
194: tag[1].val = "text/html; charset=utf-8";
195: print_otag(h, TAG_META, 2, tag);
196:
197: tag[0].key = ATTR_NAME;
198: tag[0].val = "resource-type";
199: tag[1].key = ATTR_CONTENT;
200: tag[1].val = "document";
201: print_otag(h, TAG_META, 2, tag);
202:
203: if (h->style) {
204: tag[0].key = ATTR_REL;
205: tag[0].val = "stylesheet";
206: tag[1].key = ATTR_HREF;
207: tag[1].val = h->style;
208: tag[2].key = ATTR_TYPE;
209: tag[2].val = "text/css";
210: tag[3].key = ATTR_MEDIA;
211: tag[3].val = "all";
212: print_otag(h, TAG_LINK, 4, tag);
213: }
1.4 kristaps 214: }
215:
1.33 kristaps 216:
1.29 kristaps 217: static void
1.83 kristaps 218: print_spec(struct html *h, const char *p, size_t len)
1.32 kristaps 219: {
220: const char *rhs;
221: size_t sz;
222:
1.83 kristaps 223: rhs = chars_a2ascii(h->symtab, p, len, &sz);
1.32 kristaps 224:
225: if (NULL == rhs)
226: return;
1.76 kristaps 227: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 228: }
229:
1.33 kristaps 230:
1.32 kristaps 231: static void
1.83 kristaps 232: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 233: {
234: const char *rhs;
235: size_t sz;
236:
1.83 kristaps 237: rhs = chars_a2res(h->symtab, p, len, &sz);
1.32 kristaps 238:
239: if (NULL == rhs)
240: return;
1.76 kristaps 241: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 242: }
243:
1.33 kristaps 244:
1.90 kristaps 245: struct tag *
246: print_ofont(struct html *h, enum htmlfont font)
247: {
248: struct htmlpair tag;
249:
250: h->metal = h->metac;
251: h->metac = font;
252:
253: /* FIXME: DECO_ROMAN should just close out preexisting. */
254:
1.91 kristaps 255: if (h->metaf && h->tags.head == h->metaf)
1.90 kristaps 256: print_tagq(h, h->metaf);
257:
258: PAIR_CLASS_INIT(&tag, htmlfonts[font]);
259: h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
260: return(h->metaf);
261: }
262:
263:
1.88 kristaps 264: static void
265: print_metaf(struct html *h, enum roffdeco deco)
266: {
1.90 kristaps 267: enum htmlfont font;
1.88 kristaps 268:
269: switch (deco) {
1.90 kristaps 270: case (DECO_PREVIOUS):
271: font = h->metal;
1.88 kristaps 272: break;
273: case (DECO_ITALIC):
1.90 kristaps 274: font = HTMLFONT_ITALIC;
275: break;
276: case (DECO_BOLD):
277: font = HTMLFONT_BOLD;
1.88 kristaps 278: break;
279: case (DECO_ROMAN):
1.90 kristaps 280: font = HTMLFONT_NONE;
1.88 kristaps 281: break;
282: default:
283: abort();
284: /* NOTREACHED */
285: }
286:
1.90 kristaps 287: (void)print_ofont(h, font);
1.88 kristaps 288: }
289:
290:
1.85 kristaps 291: static int
1.88 kristaps 292: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 293: {
1.77 kristaps 294: size_t sz;
1.85 kristaps 295: int len, nospace;
1.82 kristaps 296: const char *seq;
297: enum roffdeco deco;
1.100 kristaps 298: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 299:
1.85 kristaps 300: nospace = 0;
301:
1.32 kristaps 302: for (; *p; p++) {
1.100 kristaps 303: sz = strcspn(p, rejs);
1.77 kristaps 304:
305: fwrite(p, 1, sz, stdout);
1.80 kristaps 306: p += /* LINTED */
307: sz;
1.77 kristaps 308:
1.82 kristaps 309: if ('<' == *p) {
310: printf("<");
311: continue;
312: } else if ('>' == *p) {
313: printf(">");
314: continue;
315: } else if ('&' == *p) {
316: printf("&");
1.34 kristaps 317: continue;
1.100 kristaps 318: } else if (ASCII_HYPH == *p) {
319: /*
320: * Note: "soft hyphens" aren't graphically
321: * displayed when not breaking the text; we want
322: * them to be displayed.
323: */
324: /*printf("­");*/
325: putchar('-');
326: continue;
1.77 kristaps 327: } else if ('\0' == *p)
328: break;
329:
1.82 kristaps 330: seq = ++p;
331: len = a2roffdeco(&deco, &seq, &sz);
332:
333: switch (deco) {
334: case (DECO_RESERVED):
335: print_res(h, seq, sz);
336: break;
337: case (DECO_SPECIAL):
338: print_spec(h, seq, sz);
339: break;
1.90 kristaps 340: case (DECO_PREVIOUS):
341: /* FALLTHROUGH */
1.88 kristaps 342: case (DECO_BOLD):
343: /* FALLTHROUGH */
344: case (DECO_ITALIC):
345: /* FALLTHROUGH */
346: case (DECO_ROMAN):
347: if (norecurse)
348: break;
349: print_metaf(h, deco);
350: break;
1.82 kristaps 351: default:
352: break;
353: }
354:
355: p += len - 1;
1.84 kristaps 356:
357: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
1.85 kristaps 358: nospace = 1;
1.32 kristaps 359: }
1.85 kristaps 360:
361: return(nospace);
1.14 kristaps 362: }
363:
364:
1.94 kristaps 365: static void
366: print_attr(struct html *h, const char *key, const char *val)
367: {
368: printf(" %s=\"", key);
369: (void)print_encode(h, val, 1);
370: putchar('\"');
371: }
372:
373:
1.51 kristaps 374: struct tag *
1.29 kristaps 375: print_otag(struct html *h, enum htmltag tag,
376: int sz, const struct htmlpair *p)
1.14 kristaps 377: {
1.29 kristaps 378: int i;
1.30 kristaps 379: struct tag *t;
380:
1.94 kristaps 381: /* Push this tags onto the stack of open scopes. */
382:
1.30 kristaps 383: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.72 kristaps 384: t = malloc(sizeof(struct tag));
385: if (NULL == t) {
1.75 kristaps 386: perror(NULL);
1.72 kristaps 387: exit(EXIT_FAILURE);
388: }
1.30 kristaps 389: t->tag = tag;
1.66 kristaps 390: t->next = h->tags.head;
391: h->tags.head = t;
1.30 kristaps 392: } else
393: t = NULL;
1.29 kristaps 394:
395: if ( ! (HTML_NOSPACE & h->flags))
1.30 kristaps 396: if ( ! (HTML_CLRLINE & htmltags[tag].flags))
1.78 kristaps 397: putchar(' ');
1.29 kristaps 398:
1.94 kristaps 399: /* Print out the tag name and attributes. */
400:
1.29 kristaps 401: printf("<%s", htmltags[tag].name);
1.94 kristaps 402: for (i = 0; i < sz; i++)
403: print_attr(h, htmlattrs[p[i].key], p[i].val);
404:
405: /* Add non-overridable attributes. */
406:
407: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
408: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
409: print_attr(h, "xml:lang", "en");
410: print_attr(h, "lang", "en");
1.29 kristaps 411: }
1.93 kristaps 412:
1.94 kristaps 413: /* Accomodate for XML "well-formed" singleton escaping. */
414:
1.93 kristaps 415: if (HTML_AUTOCLOSE & htmltags[tag].flags)
416: switch (h->type) {
417: case (HTML_XHTML_1_0_STRICT):
418: putchar('/');
419: break;
420: default:
421: break;
422: }
423:
1.78 kristaps 424: putchar('>');
1.14 kristaps 425:
1.29 kristaps 426: h->flags |= HTML_NOSPACE;
1.30 kristaps 427: return(t);
1.14 kristaps 428: }
429:
430:
1.29 kristaps 431: static void
432: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 433: {
434:
1.29 kristaps 435: printf("</%s>", htmltags[tag].name);
1.71 kristaps 436: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 437: h->flags |= HTML_NOSPACE;
1.78 kristaps 438: putchar('\n');
1.87 kristaps 439: }
1.14 kristaps 440: }
441:
442:
1.51 kristaps 443: void
1.93 kristaps 444: print_gen_decls(struct html *h)
1.1 kristaps 445: {
1.93 kristaps 446:
447: print_xmltype(h);
448: print_doctype(h);
449: }
450:
451:
452: static void
453: print_xmltype(struct html *h)
454: {
455:
1.100 kristaps 456: if (HTML_XHTML_1_0_STRICT == h->type)
457: printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.93 kristaps 458: }
459:
460:
461: static void
462: print_doctype(struct html *h)
463: {
464: const char *doctype;
465: const char *dtd;
1.96 kristaps 466: const char *name;
1.93 kristaps 467:
468: switch (h->type) {
469: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 470: name = "HTML";
1.93 kristaps 471: doctype = "-//W3C//DTD HTML 4.01//EN";
472: dtd = "http://www.w3.org/TR/html4/strict.dtd";
473: break;
474: default:
1.96 kristaps 475: name = "html";
1.93 kristaps 476: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
477: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
478: break;
479: }
480:
1.96 kristaps 481: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
482: name, doctype, dtd);
1.1 kristaps 483: }
484:
485:
1.51 kristaps 486: void
1.29 kristaps 487: print_text(struct html *h, const char *p)
1.1 kristaps 488: {
489:
1.29 kristaps 490: if (*p && 0 == *(p + 1))
491: switch (*p) {
492: case('.'):
493: /* FALLTHROUGH */
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(']'):
1.52 kristaps 507: if ( ! (HTML_IGNDELIM & h->flags))
508: h->flags |= HTML_NOSPACE;
1.30 kristaps 509: break;
1.29 kristaps 510: default:
511: break;
512: }
1.1 kristaps 513:
1.29 kristaps 514: if ( ! (h->flags & HTML_NOSPACE))
1.78 kristaps 515: putchar(' ');
1.30 kristaps 516:
1.86 kristaps 517: assert(p);
1.88 kristaps 518: if ( ! print_encode(h, p, 0))
1.86 kristaps 519: h->flags &= ~HTML_NOSPACE;
1.8 kristaps 520:
1.98 kristaps 521: /*
522: * Note that we don't process the pipe: the parser sees it as
523: * punctuation, but we don't in terms of typography.
524: */
1.29 kristaps 525: if (*p && 0 == *(p + 1))
526: switch (*p) {
527: case('('):
528: /* FALLTHROUGH */
529: case('['):
530: h->flags |= HTML_NOSPACE;
1.30 kristaps 531: break;
1.29 kristaps 532: default:
533: break;
534: }
1.1 kristaps 535: }
1.30 kristaps 536:
537:
1.51 kristaps 538: void
1.30 kristaps 539: print_tagq(struct html *h, const struct tag *until)
540: {
541: struct tag *tag;
542:
1.66 kristaps 543: while ((tag = h->tags.head) != NULL) {
1.89 kristaps 544: if (tag == h->metaf)
545: h->metaf = NULL;
1.30 kristaps 546: print_ctag(h, tag->tag);
1.66 kristaps 547: h->tags.head = tag->next;
1.30 kristaps 548: free(tag);
549: if (until && tag == until)
550: return;
551: }
552: }
553:
554:
1.51 kristaps 555: void
1.30 kristaps 556: print_stagq(struct html *h, const struct tag *suntil)
557: {
558: struct tag *tag;
559:
1.66 kristaps 560: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 561: if (suntil && tag == suntil)
562: return;
1.89 kristaps 563: if (tag == h->metaf)
564: h->metaf = NULL;
1.30 kristaps 565: print_ctag(h, tag->tag);
1.66 kristaps 566: h->tags.head = tag->next;
1.30 kristaps 567: free(tag);
568: }
569: }
1.55 kristaps 570:
571:
572: void
573: bufinit(struct html *h)
574: {
575:
576: h->buf[0] = '\0';
577: h->buflen = 0;
578: }
579:
580:
581: void
1.58 kristaps 582: bufcat_style(struct html *h, const char *key, const char *val)
583: {
584:
585: bufcat(h, key);
586: bufncat(h, ":", 1);
587: bufcat(h, val);
588: bufncat(h, ";", 1);
589: }
590:
591:
592: void
1.55 kristaps 593: bufcat(struct html *h, const char *p)
594: {
595:
596: bufncat(h, p, strlen(p));
597: }
598:
599:
600: void
601: buffmt(struct html *h, const char *fmt, ...)
602: {
603: va_list ap;
604:
605: va_start(ap, fmt);
1.56 kristaps 606: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 607: BUFSIZ - h->buflen - 1, fmt, ap);
608: va_end(ap);
609: h->buflen = strlen(h->buf);
610: }
611:
612:
613: void
614: bufncat(struct html *h, const char *p, size_t sz)
615: {
616:
617: if (h->buflen + sz > BUFSIZ - 1)
618: sz = BUFSIZ - 1 - h->buflen;
619:
620: (void)strncat(h->buf, p, sz);
621: h->buflen += sz;
622: }
623:
624:
625: void
626: buffmt_includes(struct html *h, const char *name)
627: {
628: const char *p, *pp;
629:
630: pp = h->base_includes;
1.61 kristaps 631:
632: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 633: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 634: switch (*(p + 1)) {
635: case('I'):
636: bufcat(h, name);
637: break;
638: default:
639: bufncat(h, p, 2);
640: break;
641: }
642: pp = p + 2;
643: }
644: if (pp)
645: bufcat(h, pp);
646: }
647:
648:
649: void
650: buffmt_man(struct html *h,
651: const char *name, const char *sec)
652: {
653: const char *p, *pp;
654:
655: pp = h->base_man;
1.61 kristaps 656:
657: /* LINTED */
658: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 659: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 660: switch (*(p + 1)) {
661: case('S'):
1.58 kristaps 662: bufcat(h, sec ? sec : "1");
1.55 kristaps 663: break;
664: case('N'):
1.58 kristaps 665: buffmt(h, name);
1.55 kristaps 666: break;
667: default:
668: bufncat(h, p, 2);
669: break;
670: }
671: pp = p + 2;
672: }
673: if (pp)
674: bufcat(h, pp);
675: }
1.58 kristaps 676:
677:
678: void
679: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
680: {
1.62 kristaps 681: double v;
1.63 kristaps 682: const char *u;
1.58 kristaps 683:
684: v = su->scale;
685:
686: switch (su->unit) {
687: case (SCALE_CM):
688: u = "cm";
689: break;
690: case (SCALE_IN):
691: u = "in";
692: break;
693: case (SCALE_PC):
694: u = "pc";
695: break;
696: case (SCALE_PT):
697: u = "pt";
698: break;
1.59 kristaps 699: case (SCALE_EM):
700: u = "em";
701: break;
1.58 kristaps 702: case (SCALE_MM):
703: if (0 == (v /= 100))
704: v = 1;
705: u = "em";
706: break;
1.59 kristaps 707: case (SCALE_EN):
708: u = "ex";
709: break;
710: case (SCALE_BU):
711: u = "ex";
712: break;
1.58 kristaps 713: case (SCALE_VS):
714: u = "em";
715: break;
716: default:
717: u = "ex";
718: break;
719: }
720:
1.62 kristaps 721: if (su->pt)
722: buffmt(h, "%s: %f%s;", p, v, u);
723: else
724: /* LINTED */
725: buffmt(h, "%s: %d%s;", p, (int)v, u);
1.58 kristaps 726: }
1.65 kristaps 727:
1.68 kristaps 728:
729: void
1.70 kristaps 730: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 731: {
1.70 kristaps 732: int ssz;
1.68 kristaps 733:
734: assert(sz);
735:
736: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
737:
1.70 kristaps 738: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 739: /* Jump to end. */ ;
740:
1.70 kristaps 741: assert(sz > 2);
1.68 kristaps 742:
1.70 kristaps 743: /* We can't start with a number (bah). */
1.68 kristaps 744:
1.70 kristaps 745: *dst++ = 'x';
1.68 kristaps 746: *dst = '\0';
1.70 kristaps 747: sz--;
748:
749: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 750: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 751: sz -= ssz;
752: dst += ssz;
753: }
1.68 kristaps 754: }
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