Annotation of mandoc/html.c, Revision 1.137
1.137 ! kristaps 1: /* $Id: html.c,v 1.136 2011/04/30 22:14:42 kristaps Exp $ */
1.1 kristaps 2: /*
1.126 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4: * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.29 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.29 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.92 kristaps 18: #ifdef HAVE_CONFIG_H
19: #include "config.h"
20: #endif
21:
1.41 kristaps 22: #include <sys/types.h>
1.30 kristaps 23:
1.1 kristaps 24: #include <assert.h>
1.68 kristaps 25: #include <ctype.h>
1.76 kristaps 26: #include <stdarg.h>
1.29 kristaps 27: #include <stdio.h>
1.63 kristaps 28: #include <stdint.h>
1.1 kristaps 29: #include <stdlib.h>
1.33 kristaps 30: #include <string.h>
1.45 kristaps 31: #include <unistd.h>
1.1 kristaps 32:
1.100 kristaps 33: #include "mandoc.h"
1.58 kristaps 34: #include "out.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 */
1.115 kristaps 70: {"blockquote", HTML_CLRLINE}, /* TAG_BLOCKQUOTE */
1.116 kristaps 71: {"p", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_P */
1.118 kristaps 72: {"pre", HTML_CLRLINE }, /* TAG_PRE */
1.119 kristaps 73: {"b", 0 }, /* TAG_B */
1.120 kristaps 74: {"i", 0 }, /* TAG_I */
1.121 kristaps 75: {"code", 0 }, /* TAG_CODE */
1.122 kristaps 76: {"small", 0 }, /* TAG_SMALL */
1.90 kristaps 77: };
78:
1.82 kristaps 79: static const char *const htmlattrs[ATTR_MAX] = {
1.119 kristaps 80: "http-equiv", /* ATTR_HTTPEQUIV */
81: "content", /* ATTR_CONTENT */
82: "name", /* ATTR_NAME */
83: "rel", /* ATTR_REL */
84: "href", /* ATTR_HREF */
85: "type", /* ATTR_TYPE */
86: "media", /* ATTR_MEDIA */
87: "class", /* ATTR_CLASS */
88: "style", /* ATTR_STYLE */
89: "width", /* ATTR_WIDTH */
90: "id", /* ATTR_ID */
91: "summary", /* ATTR_SUMMARY */
92: "align", /* ATTR_ALIGN */
1.125 kristaps 93: "colspan", /* ATTR_COLSPAN */
1.29 kristaps 94: };
1.10 kristaps 95:
1.126 schwarze 96: static void print_num(struct html *, const char *, size_t);
1.132 kristaps 97: static void print_spec(struct html *, const char *, size_t);
1.83 kristaps 98: static void print_res(struct html *, const char *, size_t);
1.82 kristaps 99: static void print_ctag(struct html *, enum htmltag);
1.93 kristaps 100: static void print_doctype(struct html *);
101: static void print_xmltype(struct html *);
1.88 kristaps 102: static int print_encode(struct html *, const char *, int);
1.132 kristaps 103: static void print_metaf(struct html *, enum mandoc_esc);
1.94 kristaps 104: static void print_attr(struct html *,
105: const char *, const char *);
1.93 kristaps 106: static void *ml_alloc(char *, enum htmltype);
1.82 kristaps 107:
108:
1.93 kristaps 109: static void *
110: ml_alloc(char *outopts, enum htmltype type)
1.10 kristaps 111: {
1.30 kristaps 112: struct html *h;
1.63 kristaps 113: const char *toks[4];
114: char *v;
1.43 kristaps 115:
116: toks[0] = "style";
1.53 kristaps 117: toks[1] = "man";
1.54 kristaps 118: toks[2] = "includes";
119: toks[3] = NULL;
1.30 kristaps 120:
1.128 kristaps 121: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 122:
1.93 kristaps 123: h->type = type;
1.66 kristaps 124: h->tags.head = NULL;
1.136 kristaps 125: h->symtab = mchars_alloc();
1.41 kristaps 126:
1.47 kristaps 127: while (outopts && *outopts)
1.63 kristaps 128: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 129: case (0):
130: h->style = v;
131: break;
132: case (1):
1.53 kristaps 133: h->base_man = v;
1.43 kristaps 134: break;
1.54 kristaps 135: case (2):
136: h->base_includes = v;
137: break;
1.43 kristaps 138: default:
139: break;
140: }
141:
1.30 kristaps 142: return(h);
1.29 kristaps 143: }
1.10 kristaps 144:
1.93 kristaps 145: void *
146: html_alloc(char *outopts)
147: {
148:
149: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
150: }
151:
152:
153: void *
154: xhtml_alloc(char *outopts)
155: {
156:
157: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
158: }
159:
1.33 kristaps 160:
1.29 kristaps 161: void
162: html_free(void *p)
163: {
1.30 kristaps 164: struct tag *tag;
165: struct html *h;
166:
167: h = (struct html *)p;
1.37 kristaps 168:
1.66 kristaps 169: while ((tag = h->tags.head) != NULL) {
170: h->tags.head = tag->next;
1.30 kristaps 171: free(tag);
172: }
1.36 kristaps 173:
174: if (h->symtab)
1.133 kristaps 175: mchars_free(h->symtab);
1.53 kristaps 176:
1.30 kristaps 177: free(h);
1.10 kristaps 178: }
1.2 kristaps 179:
1.33 kristaps 180:
1.51 kristaps 181: void
1.29 kristaps 182: print_gen_head(struct html *h)
183: {
1.41 kristaps 184: struct htmlpair tag[4];
185:
186: tag[0].key = ATTR_HTTPEQUIV;
187: tag[0].val = "Content-Type";
188: tag[1].key = ATTR_CONTENT;
189: tag[1].val = "text/html; charset=utf-8";
190: print_otag(h, TAG_META, 2, tag);
191:
192: tag[0].key = ATTR_NAME;
193: tag[0].val = "resource-type";
194: tag[1].key = ATTR_CONTENT;
195: tag[1].val = "document";
196: print_otag(h, TAG_META, 2, tag);
197:
198: if (h->style) {
199: tag[0].key = ATTR_REL;
200: tag[0].val = "stylesheet";
201: tag[1].key = ATTR_HREF;
202: tag[1].val = h->style;
203: tag[2].key = ATTR_TYPE;
204: tag[2].val = "text/css";
205: tag[3].key = ATTR_MEDIA;
206: tag[3].val = "all";
207: print_otag(h, TAG_LINK, 4, tag);
208: }
1.4 kristaps 209: }
210:
1.127 kristaps 211: /* ARGSUSED */
1.29 kristaps 212: static void
1.126 schwarze 213: print_num(struct html *h, const char *p, size_t len)
214: {
1.137 ! kristaps 215: char c;
1.126 schwarze 216:
1.137 ! kristaps 217: if ('\0' != (c = mchars_num2char(p, len)))
! 218: putchar((int)c);
1.126 schwarze 219: }
220:
221: static void
1.132 kristaps 222: print_spec(struct html *h, const char *p, size_t len)
1.32 kristaps 223: {
1.107 kristaps 224: int cp;
1.32 kristaps 225: const char *rhs;
226: size_t sz;
227:
1.133 kristaps 228: if ((cp = mchars_spec2cp(h->symtab, p, len)) > 0) {
1.107 kristaps 229: printf("&#%d;", cp);
230: return;
1.132 kristaps 231: } else if (-1 == cp && 1 == len) {
1.108 kristaps 232: fwrite(p, 1, len, stdout);
233: return;
1.107 kristaps 234: } else if (-1 == cp)
235: return;
1.32 kristaps 236:
1.133 kristaps 237: if (NULL != (rhs = mchars_spec2str(h->symtab, p, len, &sz)))
1.107 kristaps 238: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 239: }
240:
1.33 kristaps 241:
1.32 kristaps 242: static void
1.83 kristaps 243: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 244: {
1.107 kristaps 245: int cp;
1.32 kristaps 246: const char *rhs;
247: size_t sz;
248:
1.133 kristaps 249: if ((cp = mchars_res2cp(h->symtab, p, len)) > 0) {
1.107 kristaps 250: printf("&#%d;", cp);
251: return;
252: } else if (-1 == cp)
253: return;
1.32 kristaps 254:
1.133 kristaps 255: if (NULL != (rhs = mchars_res2str(h->symtab, p, len, &sz)))
1.107 kristaps 256: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 257: }
258:
1.33 kristaps 259:
1.88 kristaps 260: static void
1.132 kristaps 261: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 262: {
1.90 kristaps 263: enum htmlfont font;
1.88 kristaps 264:
265: switch (deco) {
1.132 kristaps 266: case (ESCAPE_FONTPREV):
1.90 kristaps 267: font = h->metal;
1.88 kristaps 268: break;
1.132 kristaps 269: case (ESCAPE_FONTITALIC):
1.90 kristaps 270: font = HTMLFONT_ITALIC;
271: break;
1.132 kristaps 272: case (ESCAPE_FONTBOLD):
1.90 kristaps 273: font = HTMLFONT_BOLD;
1.88 kristaps 274: break;
1.132 kristaps 275: case (ESCAPE_FONTROMAN):
1.90 kristaps 276: font = HTMLFONT_NONE;
1.88 kristaps 277: break;
278: default:
279: abort();
280: /* NOTREACHED */
281: }
282:
1.122 kristaps 283: if (h->metaf) {
284: print_tagq(h, h->metaf);
285: h->metaf = NULL;
286: }
287:
288: h->metal = h->metac;
289: h->metac = font;
290:
291: if (HTMLFONT_NONE != font)
292: h->metaf = HTMLFONT_BOLD == font ?
293: print_otag(h, TAG_B, 0, NULL) :
294: print_otag(h, TAG_I, 0, NULL);
1.88 kristaps 295: }
296:
297:
1.85 kristaps 298: static int
1.88 kristaps 299: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 300: {
1.77 kristaps 301: size_t sz;
1.85 kristaps 302: int len, nospace;
1.82 kristaps 303: const char *seq;
1.132 kristaps 304: enum mandoc_esc esc;
1.100 kristaps 305: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 306:
1.85 kristaps 307: nospace = 0;
308:
1.132 kristaps 309: while ('\0' != *p) {
1.100 kristaps 310: sz = strcspn(p, rejs);
1.77 kristaps 311:
312: fwrite(p, 1, sz, stdout);
1.132 kristaps 313: p += (int)sz;
1.77 kristaps 314:
1.132 kristaps 315: if ('\0' == *p)
316: break;
317:
318: switch (*p++) {
319: case ('<'):
1.82 kristaps 320: printf("<");
321: continue;
1.132 kristaps 322: case ('>'):
1.82 kristaps 323: printf(">");
324: continue;
1.132 kristaps 325: case ('&'):
1.82 kristaps 326: printf("&");
1.34 kristaps 327: continue;
1.132 kristaps 328: case (ASCII_HYPH):
1.100 kristaps 329: putchar('-');
330: continue;
1.132 kristaps 331: default:
1.77 kristaps 332: break;
1.132 kristaps 333: }
1.77 kristaps 334:
1.132 kristaps 335: esc = mandoc_escape(&p, &seq, &len);
336: if (ESCAPE_ERROR == esc)
337: break;
1.82 kristaps 338:
1.132 kristaps 339: switch (esc) {
340: case (ESCAPE_NUMBERED):
341: print_num(h, seq, len);
1.126 schwarze 342: break;
1.132 kristaps 343: case (ESCAPE_PREDEF):
344: print_res(h, seq, len);
1.82 kristaps 345: break;
1.132 kristaps 346: case (ESCAPE_SPECIAL):
347: print_spec(h, seq, len);
1.82 kristaps 348: break;
1.132 kristaps 349: case (ESCAPE_FONTPREV):
1.90 kristaps 350: /* FALLTHROUGH */
1.132 kristaps 351: case (ESCAPE_FONTBOLD):
1.88 kristaps 352: /* FALLTHROUGH */
1.132 kristaps 353: case (ESCAPE_FONTITALIC):
1.88 kristaps 354: /* FALLTHROUGH */
1.132 kristaps 355: case (ESCAPE_FONTROMAN):
1.88 kristaps 356: if (norecurse)
357: break;
1.132 kristaps 358: print_metaf(h, esc);
359: break;
360: case (ESCAPE_NOSPACE):
361: if ('\0' == *p)
362: nospace = 1;
1.88 kristaps 363: break;
1.82 kristaps 364: default:
365: break;
366: }
1.32 kristaps 367: }
1.85 kristaps 368:
369: return(nospace);
1.14 kristaps 370: }
371:
372:
1.94 kristaps 373: static void
374: print_attr(struct html *h, const char *key, const char *val)
375: {
376: printf(" %s=\"", key);
377: (void)print_encode(h, val, 1);
378: putchar('\"');
379: }
380:
381:
1.51 kristaps 382: struct tag *
1.29 kristaps 383: print_otag(struct html *h, enum htmltag tag,
384: int sz, const struct htmlpair *p)
1.14 kristaps 385: {
1.29 kristaps 386: int i;
1.30 kristaps 387: struct tag *t;
388:
1.94 kristaps 389: /* Push this tags onto the stack of open scopes. */
390:
1.30 kristaps 391: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.128 kristaps 392: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 393: t->tag = tag;
1.66 kristaps 394: t->next = h->tags.head;
395: h->tags.head = t;
1.30 kristaps 396: } else
397: t = NULL;
1.29 kristaps 398:
399: if ( ! (HTML_NOSPACE & h->flags))
1.105 kristaps 400: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
401: /* Manage keeps! */
402: if ( ! (HTML_KEEP & h->flags)) {
403: if (HTML_PREKEEP & h->flags)
404: h->flags |= HTML_KEEP;
405: putchar(' ');
406: } else
407: printf(" ");
408: }
1.29 kristaps 409:
1.109 kristaps 410: if ( ! (h->flags & HTML_NONOSPACE))
411: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 412: else
413: h->flags |= HTML_NOSPACE;
1.109 kristaps 414:
1.94 kristaps 415: /* Print out the tag name and attributes. */
416:
1.29 kristaps 417: printf("<%s", htmltags[tag].name);
1.94 kristaps 418: for (i = 0; i < sz; i++)
419: print_attr(h, htmlattrs[p[i].key], p[i].val);
420:
421: /* Add non-overridable attributes. */
422:
423: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
424: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
425: print_attr(h, "xml:lang", "en");
426: print_attr(h, "lang", "en");
1.29 kristaps 427: }
1.93 kristaps 428:
1.134 kristaps 429: /* Accommodate for XML "well-formed" singleton escaping. */
1.94 kristaps 430:
1.93 kristaps 431: if (HTML_AUTOCLOSE & htmltags[tag].flags)
432: switch (h->type) {
433: case (HTML_XHTML_1_0_STRICT):
434: putchar('/');
435: break;
436: default:
437: break;
438: }
439:
1.78 kristaps 440: putchar('>');
1.14 kristaps 441:
1.29 kristaps 442: h->flags |= HTML_NOSPACE;
1.117 kristaps 443:
444: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
445: putchar('\n');
446:
1.30 kristaps 447: return(t);
1.14 kristaps 448: }
449:
450:
1.29 kristaps 451: static void
452: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 453: {
454:
1.29 kristaps 455: printf("</%s>", htmltags[tag].name);
1.71 kristaps 456: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 457: h->flags |= HTML_NOSPACE;
1.78 kristaps 458: putchar('\n');
1.87 kristaps 459: }
1.14 kristaps 460: }
461:
462:
1.51 kristaps 463: void
1.93 kristaps 464: print_gen_decls(struct html *h)
1.1 kristaps 465: {
1.93 kristaps 466:
467: print_xmltype(h);
468: print_doctype(h);
469: }
470:
471:
472: static void
473: print_xmltype(struct html *h)
474: {
475:
1.100 kristaps 476: if (HTML_XHTML_1_0_STRICT == h->type)
1.121 kristaps 477: puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.93 kristaps 478: }
479:
480:
481: static void
482: print_doctype(struct html *h)
483: {
484: const char *doctype;
485: const char *dtd;
1.96 kristaps 486: const char *name;
1.93 kristaps 487:
488: switch (h->type) {
489: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 490: name = "HTML";
1.93 kristaps 491: doctype = "-//W3C//DTD HTML 4.01//EN";
492: dtd = "http://www.w3.org/TR/html4/strict.dtd";
493: break;
494: default:
1.96 kristaps 495: name = "html";
1.93 kristaps 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:
1.96 kristaps 501: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
502: name, doctype, dtd);
1.1 kristaps 503: }
504:
1.51 kristaps 505: void
1.104 kristaps 506: print_text(struct html *h, const char *word)
1.1 kristaps 507: {
508:
1.105 kristaps 509: if ( ! (HTML_NOSPACE & h->flags)) {
510: /* Manage keeps! */
511: if ( ! (HTML_KEEP & h->flags)) {
512: if (HTML_PREKEEP & h->flags)
513: h->flags |= HTML_KEEP;
514: putchar(' ');
515: } else
516: printf(" ");
517: }
1.30 kristaps 518:
1.122 kristaps 519: assert(NULL == h->metaf);
520: if (HTMLFONT_NONE != h->metac)
521: h->metaf = HTMLFONT_BOLD == h->metac ?
522: print_otag(h, TAG_B, 0, NULL) :
523: print_otag(h, TAG_I, 0, NULL);
524:
1.104 kristaps 525: assert(word);
526: if ( ! print_encode(h, word, 0))
1.109 kristaps 527: if ( ! (h->flags & HTML_NONOSPACE))
528: h->flags &= ~HTML_NOSPACE;
1.122 kristaps 529:
530: if (h->metaf) {
531: print_tagq(h, h->metaf);
532: h->metaf = NULL;
533: }
1.113 schwarze 534:
535: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 536: }
1.30 kristaps 537:
538:
1.51 kristaps 539: void
1.30 kristaps 540: print_tagq(struct html *h, const struct tag *until)
541: {
542: struct tag *tag;
543:
1.66 kristaps 544: while ((tag = h->tags.head) != NULL) {
1.125 kristaps 545: /*
546: * Remember to close out and nullify the current
547: * meta-font and table, if applicable.
548: */
1.89 kristaps 549: if (tag == h->metaf)
550: h->metaf = NULL;
1.125 kristaps 551: if (tag == h->tblt)
552: h->tblt = NULL;
1.30 kristaps 553: print_ctag(h, tag->tag);
1.66 kristaps 554: h->tags.head = tag->next;
1.30 kristaps 555: free(tag);
556: if (until && tag == until)
557: return;
558: }
559: }
560:
561:
1.51 kristaps 562: void
1.30 kristaps 563: print_stagq(struct html *h, const struct tag *suntil)
564: {
565: struct tag *tag;
566:
1.66 kristaps 567: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 568: if (suntil && tag == suntil)
569: return;
1.125 kristaps 570: /*
571: * Remember to close out and nullify the current
572: * meta-font and table, if applicable.
573: */
1.89 kristaps 574: if (tag == h->metaf)
575: h->metaf = NULL;
1.125 kristaps 576: if (tag == h->tblt)
577: h->tblt = NULL;
1.30 kristaps 578: print_ctag(h, tag->tag);
1.66 kristaps 579: h->tags.head = tag->next;
1.30 kristaps 580: free(tag);
581: }
582: }
1.55 kristaps 583:
584:
585: void
586: bufinit(struct html *h)
587: {
588:
589: h->buf[0] = '\0';
590: h->buflen = 0;
591: }
592:
593:
594: void
1.58 kristaps 595: bufcat_style(struct html *h, const char *key, const char *val)
596: {
597:
598: bufcat(h, key);
599: bufncat(h, ":", 1);
600: bufcat(h, val);
601: bufncat(h, ";", 1);
602: }
603:
604:
605: void
1.55 kristaps 606: bufcat(struct html *h, const char *p)
607: {
608:
609: bufncat(h, p, strlen(p));
610: }
611:
612:
613: void
614: buffmt(struct html *h, const char *fmt, ...)
615: {
616: va_list ap;
617:
618: va_start(ap, fmt);
1.56 kristaps 619: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 620: BUFSIZ - h->buflen - 1, fmt, ap);
621: va_end(ap);
622: h->buflen = strlen(h->buf);
623: }
624:
625:
626: void
627: bufncat(struct html *h, const char *p, size_t sz)
628: {
629:
630: if (h->buflen + sz > BUFSIZ - 1)
631: sz = BUFSIZ - 1 - h->buflen;
632:
633: (void)strncat(h->buf, p, sz);
634: h->buflen += sz;
635: }
636:
637:
638: void
639: buffmt_includes(struct html *h, const char *name)
640: {
641: const char *p, *pp;
642:
643: pp = h->base_includes;
1.61 kristaps 644:
645: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 646: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 647: switch (*(p + 1)) {
648: case('I'):
649: bufcat(h, name);
650: break;
651: default:
652: bufncat(h, p, 2);
653: break;
654: }
655: pp = p + 2;
656: }
657: if (pp)
658: bufcat(h, pp);
659: }
660:
661:
662: void
663: buffmt_man(struct html *h,
664: const char *name, const char *sec)
665: {
666: const char *p, *pp;
667:
668: pp = h->base_man;
1.61 kristaps 669:
670: /* LINTED */
671: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 672: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 673: switch (*(p + 1)) {
674: case('S'):
1.58 kristaps 675: bufcat(h, sec ? sec : "1");
1.55 kristaps 676: break;
677: case('N'):
1.58 kristaps 678: buffmt(h, name);
1.55 kristaps 679: break;
680: default:
681: bufncat(h, p, 2);
682: break;
683: }
684: pp = p + 2;
685: }
686: if (pp)
687: bufcat(h, pp);
688: }
1.58 kristaps 689:
690:
691: void
692: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
693: {
1.62 kristaps 694: double v;
1.63 kristaps 695: const char *u;
1.58 kristaps 696:
697: v = su->scale;
698:
699: switch (su->unit) {
700: case (SCALE_CM):
701: u = "cm";
702: break;
703: case (SCALE_IN):
704: u = "in";
705: break;
706: case (SCALE_PC):
707: u = "pc";
708: break;
709: case (SCALE_PT):
710: u = "pt";
711: break;
1.59 kristaps 712: case (SCALE_EM):
713: u = "em";
714: break;
1.58 kristaps 715: case (SCALE_MM):
716: if (0 == (v /= 100))
717: v = 1;
718: u = "em";
719: break;
1.59 kristaps 720: case (SCALE_EN):
721: u = "ex";
722: break;
723: case (SCALE_BU):
724: u = "ex";
725: break;
1.58 kristaps 726: case (SCALE_VS):
727: u = "em";
728: break;
729: default:
730: u = "ex";
731: break;
732: }
733:
1.103 kristaps 734: /*
735: * XXX: the CSS spec isn't clear as to which types accept
736: * integer or real numbers, so we just make them all decimals.
737: */
738: buffmt(h, "%s: %.2f%s;", p, v, u);
1.58 kristaps 739: }
1.65 kristaps 740:
1.68 kristaps 741:
742: void
1.70 kristaps 743: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 744: {
1.70 kristaps 745: int ssz;
1.68 kristaps 746:
1.124 schwarze 747: assert(sz > 2);
1.68 kristaps 748:
749: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
750:
1.124 schwarze 751: /* We can't start with a number (bah). */
752:
753: if ('#' == *dst) {
754: dst++;
755: sz--;
756: }
757: if ('\0' == *dst) {
758: *dst++ = 'x';
759: *dst = '\0';
760: sz--;
761: }
762:
1.70 kristaps 763: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 764: /* Jump to end. */ ;
1.70 kristaps 765:
766: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 767: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 768: sz -= ssz;
769: dst += ssz;
770: }
1.68 kristaps 771: }
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