Annotation of mandoc/html.c, Revision 1.114
1.114 ! kristaps 1: /* $Id: html.c,v 1.113 2010/10/01 21:51:13 schwarze Exp $ */
1.1 kristaps 2: /*
1.106 schwarze 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
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 */
1.114 ! kristaps 60: {"tbody", HTML_CLRLINE}, /* TAG_TBODY */
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 */
1.114 ! kristaps 67: {"dl", HTML_CLRLINE}, /* TAG_DL */
! 68: {"dt", HTML_CLRLINE}, /* TAG_DT */
! 69: {"dd", HTML_CLRLINE}, /* TAG_DD */
1.29 kristaps 70: };
1.10 kristaps 71:
1.90 kristaps 72: static const char *const htmlfonts[HTMLFONT_MAX] = {
73: "roman",
74: "bold",
75: "italic"
76: };
77:
1.82 kristaps 78: static const char *const htmlattrs[ATTR_MAX] = {
1.29 kristaps 79: "http-equiv",
80: "content",
81: "name",
82: "rel",
83: "href",
84: "type",
85: "media",
1.33 kristaps 86: "class",
87: "style",
88: "width",
89: "valign",
1.54 kristaps 90: "target",
1.57 kristaps 91: "id",
1.67 kristaps 92: "summary",
1.29 kristaps 93: };
1.10 kristaps 94:
1.108 kristaps 95: static void print_spec(struct html *, enum roffdeco,
96: const char *, size_t);
1.83 kristaps 97: static void print_res(struct html *, const char *, size_t);
1.82 kristaps 98: static void print_ctag(struct html *, enum htmltag);
1.93 kristaps 99: static void print_doctype(struct html *);
100: static void print_xmltype(struct html *);
1.88 kristaps 101: static int print_encode(struct html *, const char *, int);
102: static void print_metaf(struct html *, enum roffdeco);
1.94 kristaps 103: static void print_attr(struct html *,
104: const char *, const char *);
1.93 kristaps 105: static void *ml_alloc(char *, enum htmltype);
1.82 kristaps 106:
107:
1.93 kristaps 108: static void *
109: ml_alloc(char *outopts, enum htmltype type)
1.10 kristaps 110: {
1.30 kristaps 111: struct html *h;
1.63 kristaps 112: const char *toks[4];
113: char *v;
1.43 kristaps 114:
115: toks[0] = "style";
1.53 kristaps 116: toks[1] = "man";
1.54 kristaps 117: toks[2] = "includes";
118: toks[3] = NULL;
1.30 kristaps 119:
1.72 kristaps 120: h = calloc(1, sizeof(struct html));
121: if (NULL == h) {
1.75 kristaps 122: perror(NULL);
1.112 kristaps 123: exit((int)MANDOCLEVEL_SYSERR);
1.72 kristaps 124: }
1.10 kristaps 125:
1.93 kristaps 126: h->type = type;
1.66 kristaps 127: h->tags.head = NULL;
1.72 kristaps 128: h->symtab = chars_init(CHARS_HTML);
1.41 kristaps 129:
1.47 kristaps 130: while (outopts && *outopts)
1.63 kristaps 131: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 132: case (0):
133: h->style = v;
134: break;
135: case (1):
1.53 kristaps 136: h->base_man = v;
1.43 kristaps 137: break;
1.54 kristaps 138: case (2):
139: h->base_includes = v;
140: break;
1.43 kristaps 141: default:
142: break;
143: }
144:
1.30 kristaps 145: return(h);
1.29 kristaps 146: }
1.10 kristaps 147:
1.93 kristaps 148: void *
149: html_alloc(char *outopts)
150: {
151:
152: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
153: }
154:
155:
156: void *
157: xhtml_alloc(char *outopts)
158: {
159:
160: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
161: }
162:
1.33 kristaps 163:
1.29 kristaps 164: void
165: html_free(void *p)
166: {
1.30 kristaps 167: struct tag *tag;
168: struct html *h;
169:
170: h = (struct html *)p;
1.37 kristaps 171:
1.66 kristaps 172: while ((tag = h->tags.head) != NULL) {
173: h->tags.head = tag->next;
1.30 kristaps 174: free(tag);
175: }
1.36 kristaps 176:
177: if (h->symtab)
178: chars_free(h->symtab);
1.53 kristaps 179:
1.30 kristaps 180: free(h);
1.10 kristaps 181: }
1.2 kristaps 182:
1.33 kristaps 183:
1.51 kristaps 184: void
1.29 kristaps 185: print_gen_head(struct html *h)
186: {
1.41 kristaps 187: struct htmlpair tag[4];
188:
189: tag[0].key = ATTR_HTTPEQUIV;
190: tag[0].val = "Content-Type";
191: tag[1].key = ATTR_CONTENT;
192: tag[1].val = "text/html; charset=utf-8";
193: print_otag(h, TAG_META, 2, tag);
194:
195: tag[0].key = ATTR_NAME;
196: tag[0].val = "resource-type";
197: tag[1].key = ATTR_CONTENT;
198: tag[1].val = "document";
199: print_otag(h, TAG_META, 2, tag);
200:
201: if (h->style) {
202: tag[0].key = ATTR_REL;
203: tag[0].val = "stylesheet";
204: tag[1].key = ATTR_HREF;
205: tag[1].val = h->style;
206: tag[2].key = ATTR_TYPE;
207: tag[2].val = "text/css";
208: tag[3].key = ATTR_MEDIA;
209: tag[3].val = "all";
210: print_otag(h, TAG_LINK, 4, tag);
211: }
1.4 kristaps 212: }
213:
1.33 kristaps 214:
1.29 kristaps 215: static void
1.108 kristaps 216: print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
1.32 kristaps 217: {
1.107 kristaps 218: int cp;
1.32 kristaps 219: const char *rhs;
220: size_t sz;
221:
1.107 kristaps 222: if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
223: printf("&#%d;", cp);
224: return;
1.108 kristaps 225: } else if (-1 == cp && DECO_SSPECIAL == d) {
226: fwrite(p, 1, len, stdout);
227: return;
1.107 kristaps 228: } else if (-1 == cp)
229: return;
1.32 kristaps 230:
1.107 kristaps 231: if (NULL != (rhs = chars_spec2str(h->symtab, p, len, &sz)))
232: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 233: }
234:
1.33 kristaps 235:
1.32 kristaps 236: static void
1.83 kristaps 237: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 238: {
1.107 kristaps 239: int cp;
1.32 kristaps 240: const char *rhs;
241: size_t sz;
242:
1.107 kristaps 243: if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
244: printf("&#%d;", cp);
245: return;
246: } else if (-1 == cp)
247: return;
1.32 kristaps 248:
1.107 kristaps 249: if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
250: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 251: }
252:
1.33 kristaps 253:
1.90 kristaps 254: struct tag *
255: print_ofont(struct html *h, enum htmlfont font)
256: {
257: struct htmlpair tag;
258:
259: h->metal = h->metac;
260: h->metac = font;
261:
262: /* FIXME: DECO_ROMAN should just close out preexisting. */
263:
1.91 kristaps 264: if (h->metaf && h->tags.head == h->metaf)
1.90 kristaps 265: print_tagq(h, h->metaf);
266:
267: PAIR_CLASS_INIT(&tag, htmlfonts[font]);
268: h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
269: return(h->metaf);
270: }
271:
272:
1.88 kristaps 273: static void
274: print_metaf(struct html *h, enum roffdeco deco)
275: {
1.90 kristaps 276: enum htmlfont font;
1.88 kristaps 277:
278: switch (deco) {
1.90 kristaps 279: case (DECO_PREVIOUS):
280: font = h->metal;
1.88 kristaps 281: break;
282: case (DECO_ITALIC):
1.90 kristaps 283: font = HTMLFONT_ITALIC;
284: break;
285: case (DECO_BOLD):
286: font = HTMLFONT_BOLD;
1.88 kristaps 287: break;
288: case (DECO_ROMAN):
1.90 kristaps 289: font = HTMLFONT_NONE;
1.88 kristaps 290: break;
291: default:
292: abort();
293: /* NOTREACHED */
294: }
295:
1.90 kristaps 296: (void)print_ofont(h, font);
1.88 kristaps 297: }
298:
299:
1.85 kristaps 300: static int
1.88 kristaps 301: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 302: {
1.77 kristaps 303: size_t sz;
1.85 kristaps 304: int len, nospace;
1.82 kristaps 305: const char *seq;
306: enum roffdeco deco;
1.100 kristaps 307: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 308:
1.85 kristaps 309: nospace = 0;
310:
1.32 kristaps 311: for (; *p; p++) {
1.100 kristaps 312: sz = strcspn(p, rejs);
1.77 kristaps 313:
314: fwrite(p, 1, sz, stdout);
1.80 kristaps 315: p += /* LINTED */
316: sz;
1.77 kristaps 317:
1.82 kristaps 318: if ('<' == *p) {
319: printf("<");
320: continue;
321: } else if ('>' == *p) {
322: printf(">");
323: continue;
324: } else if ('&' == *p) {
325: printf("&");
1.34 kristaps 326: continue;
1.100 kristaps 327: } else if (ASCII_HYPH == *p) {
328: /*
329: * Note: "soft hyphens" aren't graphically
330: * displayed when not breaking the text; we want
331: * them to be displayed.
332: */
333: /*printf("­");*/
334: putchar('-');
335: continue;
1.77 kristaps 336: } else if ('\0' == *p)
337: break;
338:
1.82 kristaps 339: seq = ++p;
340: len = a2roffdeco(&deco, &seq, &sz);
341:
342: switch (deco) {
343: case (DECO_RESERVED):
344: print_res(h, seq, sz);
345: break;
1.108 kristaps 346: case (DECO_SSPECIAL):
347: /* FALLTHROUGH */
1.82 kristaps 348: case (DECO_SPECIAL):
1.108 kristaps 349: print_spec(h, deco, seq, sz);
1.82 kristaps 350: break;
1.90 kristaps 351: case (DECO_PREVIOUS):
352: /* FALLTHROUGH */
1.88 kristaps 353: case (DECO_BOLD):
354: /* FALLTHROUGH */
355: case (DECO_ITALIC):
356: /* FALLTHROUGH */
357: case (DECO_ROMAN):
358: if (norecurse)
359: break;
360: print_metaf(h, deco);
361: break;
1.82 kristaps 362: default:
363: break;
364: }
365:
366: p += len - 1;
1.84 kristaps 367:
368: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
1.85 kristaps 369: nospace = 1;
1.32 kristaps 370: }
1.85 kristaps 371:
372: return(nospace);
1.14 kristaps 373: }
374:
375:
1.94 kristaps 376: static void
377: print_attr(struct html *h, const char *key, const char *val)
378: {
379: printf(" %s=\"", key);
380: (void)print_encode(h, val, 1);
381: putchar('\"');
382: }
383:
384:
1.51 kristaps 385: struct tag *
1.29 kristaps 386: print_otag(struct html *h, enum htmltag tag,
387: int sz, const struct htmlpair *p)
1.14 kristaps 388: {
1.29 kristaps 389: int i;
1.30 kristaps 390: struct tag *t;
391:
1.94 kristaps 392: /* Push this tags onto the stack of open scopes. */
393:
1.30 kristaps 394: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.72 kristaps 395: t = malloc(sizeof(struct tag));
396: if (NULL == t) {
1.75 kristaps 397: perror(NULL);
1.112 kristaps 398: exit((int)MANDOCLEVEL_SYSERR);
1.72 kristaps 399: }
1.30 kristaps 400: t->tag = tag;
1.66 kristaps 401: t->next = h->tags.head;
402: h->tags.head = t;
1.30 kristaps 403: } else
404: t = NULL;
1.29 kristaps 405:
406: if ( ! (HTML_NOSPACE & h->flags))
1.105 kristaps 407: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
408: /* Manage keeps! */
409: if ( ! (HTML_KEEP & h->flags)) {
410: if (HTML_PREKEEP & h->flags)
411: h->flags |= HTML_KEEP;
412: putchar(' ');
413: } else
414: printf(" ");
415: }
1.29 kristaps 416:
1.109 kristaps 417: if ( ! (h->flags & HTML_NONOSPACE))
418: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 419: else
420: h->flags |= HTML_NOSPACE;
1.109 kristaps 421:
1.94 kristaps 422: /* Print out the tag name and attributes. */
423:
1.29 kristaps 424: printf("<%s", htmltags[tag].name);
1.94 kristaps 425: for (i = 0; i < sz; i++)
426: print_attr(h, htmlattrs[p[i].key], p[i].val);
427:
428: /* Add non-overridable attributes. */
429:
430: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
431: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
432: print_attr(h, "xml:lang", "en");
433: print_attr(h, "lang", "en");
1.29 kristaps 434: }
1.93 kristaps 435:
1.94 kristaps 436: /* Accomodate for XML "well-formed" singleton escaping. */
437:
1.93 kristaps 438: if (HTML_AUTOCLOSE & htmltags[tag].flags)
439: switch (h->type) {
440: case (HTML_XHTML_1_0_STRICT):
441: putchar('/');
442: break;
443: default:
444: break;
445: }
446:
1.78 kristaps 447: putchar('>');
1.14 kristaps 448:
1.29 kristaps 449: h->flags |= HTML_NOSPACE;
1.30 kristaps 450: return(t);
1.14 kristaps 451: }
452:
453:
1.29 kristaps 454: static void
455: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 456: {
457:
1.29 kristaps 458: printf("</%s>", htmltags[tag].name);
1.71 kristaps 459: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 460: h->flags |= HTML_NOSPACE;
1.78 kristaps 461: putchar('\n');
1.87 kristaps 462: }
1.14 kristaps 463: }
464:
465:
1.51 kristaps 466: void
1.93 kristaps 467: print_gen_decls(struct html *h)
1.1 kristaps 468: {
1.93 kristaps 469:
470: print_xmltype(h);
471: print_doctype(h);
472: }
473:
474:
475: static void
476: print_xmltype(struct html *h)
477: {
478:
1.100 kristaps 479: if (HTML_XHTML_1_0_STRICT == h->type)
480: printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.93 kristaps 481: }
482:
483:
484: static void
485: print_doctype(struct html *h)
486: {
487: const char *doctype;
488: const char *dtd;
1.96 kristaps 489: const char *name;
1.93 kristaps 490:
491: switch (h->type) {
492: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 493: name = "HTML";
1.93 kristaps 494: doctype = "-//W3C//DTD HTML 4.01//EN";
495: dtd = "http://www.w3.org/TR/html4/strict.dtd";
496: break;
497: default:
1.96 kristaps 498: name = "html";
1.93 kristaps 499: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
500: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
501: break;
502: }
503:
1.96 kristaps 504: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
505: name, doctype, dtd);
1.1 kristaps 506: }
507:
508:
1.51 kristaps 509: void
1.104 kristaps 510: print_text(struct html *h, const char *word)
1.1 kristaps 511: {
512:
1.104 kristaps 513: if (word[0] && '\0' == word[1])
514: switch (word[0]) {
1.29 kristaps 515: case('.'):
516: /* FALLTHROUGH */
517: case(','):
518: /* FALLTHROUGH */
519: case(';'):
520: /* FALLTHROUGH */
521: case(':'):
522: /* FALLTHROUGH */
523: case('?'):
524: /* FALLTHROUGH */
525: case('!'):
526: /* FALLTHROUGH */
527: case(')'):
528: /* FALLTHROUGH */
529: case(']'):
1.52 kristaps 530: if ( ! (HTML_IGNDELIM & h->flags))
531: h->flags |= HTML_NOSPACE;
1.30 kristaps 532: break;
1.29 kristaps 533: default:
534: break;
535: }
1.1 kristaps 536:
1.105 kristaps 537: if ( ! (HTML_NOSPACE & h->flags)) {
538: /* Manage keeps! */
539: if ( ! (HTML_KEEP & h->flags)) {
540: if (HTML_PREKEEP & h->flags)
541: h->flags |= HTML_KEEP;
542: putchar(' ');
543: } else
544: printf(" ");
545: }
1.30 kristaps 546:
1.104 kristaps 547: assert(word);
548: if ( ! print_encode(h, word, 0))
1.109 kristaps 549: if ( ! (h->flags & HTML_NONOSPACE))
550: h->flags &= ~HTML_NOSPACE;
1.113 schwarze 551:
552: h->flags &= ~HTML_IGNDELIM;
1.8 kristaps 553:
1.98 kristaps 554: /*
555: * Note that we don't process the pipe: the parser sees it as
556: * punctuation, but we don't in terms of typography.
557: */
1.104 kristaps 558: if (word[0] && '\0' == word[1])
559: switch (word[0]) {
1.29 kristaps 560: case('('):
561: /* FALLTHROUGH */
562: case('['):
563: h->flags |= HTML_NOSPACE;
1.30 kristaps 564: break;
1.29 kristaps 565: default:
566: break;
567: }
1.1 kristaps 568: }
1.30 kristaps 569:
570:
1.51 kristaps 571: void
1.30 kristaps 572: print_tagq(struct html *h, const struct tag *until)
573: {
574: struct tag *tag;
575:
1.66 kristaps 576: while ((tag = h->tags.head) != NULL) {
1.89 kristaps 577: if (tag == h->metaf)
578: h->metaf = NULL;
1.30 kristaps 579: print_ctag(h, tag->tag);
1.66 kristaps 580: h->tags.head = tag->next;
1.30 kristaps 581: free(tag);
582: if (until && tag == until)
583: return;
584: }
585: }
586:
587:
1.51 kristaps 588: void
1.30 kristaps 589: print_stagq(struct html *h, const struct tag *suntil)
590: {
591: struct tag *tag;
592:
1.66 kristaps 593: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 594: if (suntil && tag == suntil)
595: return;
1.89 kristaps 596: if (tag == h->metaf)
597: h->metaf = NULL;
1.30 kristaps 598: print_ctag(h, tag->tag);
1.66 kristaps 599: h->tags.head = tag->next;
1.30 kristaps 600: free(tag);
601: }
602: }
1.55 kristaps 603:
604:
605: void
606: bufinit(struct html *h)
607: {
608:
609: h->buf[0] = '\0';
610: h->buflen = 0;
611: }
612:
613:
614: void
1.58 kristaps 615: bufcat_style(struct html *h, const char *key, const char *val)
616: {
617:
618: bufcat(h, key);
619: bufncat(h, ":", 1);
620: bufcat(h, val);
621: bufncat(h, ";", 1);
622: }
623:
624:
625: void
1.55 kristaps 626: bufcat(struct html *h, const char *p)
627: {
628:
629: bufncat(h, p, strlen(p));
630: }
631:
632:
633: void
634: buffmt(struct html *h, const char *fmt, ...)
635: {
636: va_list ap;
637:
638: va_start(ap, fmt);
1.56 kristaps 639: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 640: BUFSIZ - h->buflen - 1, fmt, ap);
641: va_end(ap);
642: h->buflen = strlen(h->buf);
643: }
644:
645:
646: void
647: bufncat(struct html *h, const char *p, size_t sz)
648: {
649:
650: if (h->buflen + sz > BUFSIZ - 1)
651: sz = BUFSIZ - 1 - h->buflen;
652:
653: (void)strncat(h->buf, p, sz);
654: h->buflen += sz;
655: }
656:
657:
658: void
659: buffmt_includes(struct html *h, const char *name)
660: {
661: const char *p, *pp;
662:
663: pp = h->base_includes;
1.61 kristaps 664:
665: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 666: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 667: switch (*(p + 1)) {
668: case('I'):
669: bufcat(h, name);
670: break;
671: default:
672: bufncat(h, p, 2);
673: break;
674: }
675: pp = p + 2;
676: }
677: if (pp)
678: bufcat(h, pp);
679: }
680:
681:
682: void
683: buffmt_man(struct html *h,
684: const char *name, const char *sec)
685: {
686: const char *p, *pp;
687:
688: pp = h->base_man;
1.61 kristaps 689:
690: /* LINTED */
691: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 692: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 693: switch (*(p + 1)) {
694: case('S'):
1.58 kristaps 695: bufcat(h, sec ? sec : "1");
1.55 kristaps 696: break;
697: case('N'):
1.58 kristaps 698: buffmt(h, name);
1.55 kristaps 699: break;
700: default:
701: bufncat(h, p, 2);
702: break;
703: }
704: pp = p + 2;
705: }
706: if (pp)
707: bufcat(h, pp);
708: }
1.58 kristaps 709:
710:
711: void
712: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
713: {
1.62 kristaps 714: double v;
1.63 kristaps 715: const char *u;
1.58 kristaps 716:
717: v = su->scale;
718:
719: switch (su->unit) {
720: case (SCALE_CM):
721: u = "cm";
722: break;
723: case (SCALE_IN):
724: u = "in";
725: break;
726: case (SCALE_PC):
727: u = "pc";
728: break;
729: case (SCALE_PT):
730: u = "pt";
731: break;
1.59 kristaps 732: case (SCALE_EM):
733: u = "em";
734: break;
1.58 kristaps 735: case (SCALE_MM):
736: if (0 == (v /= 100))
737: v = 1;
738: u = "em";
739: break;
1.59 kristaps 740: case (SCALE_EN):
741: u = "ex";
742: break;
743: case (SCALE_BU):
744: u = "ex";
745: break;
1.58 kristaps 746: case (SCALE_VS):
747: u = "em";
748: break;
749: default:
750: u = "ex";
751: break;
752: }
753:
1.103 kristaps 754: /*
755: * XXX: the CSS spec isn't clear as to which types accept
756: * integer or real numbers, so we just make them all decimals.
757: */
758: buffmt(h, "%s: %.2f%s;", p, v, u);
1.58 kristaps 759: }
1.65 kristaps 760:
1.68 kristaps 761:
762: void
1.70 kristaps 763: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 764: {
1.70 kristaps 765: int ssz;
1.68 kristaps 766:
767: assert(sz);
768:
769: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
770:
1.70 kristaps 771: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 772: /* Jump to end. */ ;
773:
1.70 kristaps 774: assert(sz > 2);
1.68 kristaps 775:
1.70 kristaps 776: /* We can't start with a number (bah). */
1.68 kristaps 777:
1.70 kristaps 778: *dst++ = 'x';
1.68 kristaps 779: *dst = '\0';
1.70 kristaps 780: sz--;
781:
782: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 783: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 784: sz -= ssz;
785: dst += ssz;
786: }
1.68 kristaps 787: }
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