Annotation of mandoc/html.c, Revision 1.122
1.122 ! kristaps 1: /* $Id: html.c,v 1.121 2010/12/22 11:15:16 kristaps 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 */
1.115 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 */
75: {"u", 0 }, /* TAG_U */
1.121 kristaps 76: {"code", 0 }, /* TAG_CODE */
1.122 ! kristaps 77: {"small", 0 }, /* TAG_SMALL */
1.90 kristaps 78: };
79:
1.82 kristaps 80: static const char *const htmlattrs[ATTR_MAX] = {
1.119 kristaps 81: "http-equiv", /* ATTR_HTTPEQUIV */
82: "content", /* ATTR_CONTENT */
83: "name", /* ATTR_NAME */
84: "rel", /* ATTR_REL */
85: "href", /* ATTR_HREF */
86: "type", /* ATTR_TYPE */
87: "media", /* ATTR_MEDIA */
88: "class", /* ATTR_CLASS */
89: "style", /* ATTR_STYLE */
90: "width", /* ATTR_WIDTH */
91: "id", /* ATTR_ID */
92: "summary", /* ATTR_SUMMARY */
93: "align", /* ATTR_ALIGN */
1.29 kristaps 94: };
1.10 kristaps 95:
1.108 kristaps 96: static void print_spec(struct html *, enum roffdeco,
97: 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);
103: static void print_metaf(struct html *, enum roffdeco);
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:
1.72 kristaps 121: h = calloc(1, sizeof(struct html));
122: if (NULL == h) {
1.75 kristaps 123: perror(NULL);
1.112 kristaps 124: exit((int)MANDOCLEVEL_SYSERR);
1.72 kristaps 125: }
1.10 kristaps 126:
1.93 kristaps 127: h->type = type;
1.66 kristaps 128: h->tags.head = NULL;
1.72 kristaps 129: h->symtab = chars_init(CHARS_HTML);
1.41 kristaps 130:
1.47 kristaps 131: while (outopts && *outopts)
1.63 kristaps 132: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 133: case (0):
134: h->style = v;
135: break;
136: case (1):
1.53 kristaps 137: h->base_man = v;
1.43 kristaps 138: break;
1.54 kristaps 139: case (2):
140: h->base_includes = v;
141: break;
1.43 kristaps 142: default:
143: break;
144: }
145:
1.30 kristaps 146: return(h);
1.29 kristaps 147: }
1.10 kristaps 148:
1.93 kristaps 149: void *
150: html_alloc(char *outopts)
151: {
152:
153: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
154: }
155:
156:
157: void *
158: xhtml_alloc(char *outopts)
159: {
160:
161: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
162: }
163:
1.33 kristaps 164:
1.29 kristaps 165: void
166: html_free(void *p)
167: {
1.30 kristaps 168: struct tag *tag;
169: struct html *h;
170:
171: h = (struct html *)p;
1.37 kristaps 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
1.108 kristaps 217: print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
1.32 kristaps 218: {
1.107 kristaps 219: int cp;
1.32 kristaps 220: const char *rhs;
221: size_t sz;
222:
1.107 kristaps 223: if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
224: printf("&#%d;", cp);
225: return;
1.108 kristaps 226: } else if (-1 == cp && DECO_SSPECIAL == d) {
227: fwrite(p, 1, len, stdout);
228: return;
1.107 kristaps 229: } else if (-1 == cp)
230: return;
1.32 kristaps 231:
1.107 kristaps 232: if (NULL != (rhs = chars_spec2str(h->symtab, p, len, &sz)))
233: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 234: }
235:
1.33 kristaps 236:
1.32 kristaps 237: static void
1.83 kristaps 238: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 239: {
1.107 kristaps 240: int cp;
1.32 kristaps 241: const char *rhs;
242: size_t sz;
243:
1.107 kristaps 244: if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
245: printf("&#%d;", cp);
246: return;
247: } else if (-1 == cp)
248: return;
1.32 kristaps 249:
1.107 kristaps 250: if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
251: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 252: }
253:
1.33 kristaps 254:
1.88 kristaps 255: static void
256: print_metaf(struct html *h, enum roffdeco deco)
257: {
1.90 kristaps 258: enum htmlfont font;
1.88 kristaps 259:
260: switch (deco) {
1.90 kristaps 261: case (DECO_PREVIOUS):
262: font = h->metal;
1.88 kristaps 263: break;
264: case (DECO_ITALIC):
1.90 kristaps 265: font = HTMLFONT_ITALIC;
266: break;
267: case (DECO_BOLD):
268: font = HTMLFONT_BOLD;
1.88 kristaps 269: break;
270: case (DECO_ROMAN):
1.90 kristaps 271: font = HTMLFONT_NONE;
1.88 kristaps 272: break;
273: default:
274: abort();
275: /* NOTREACHED */
276: }
277:
1.122 ! kristaps 278: if (h->metaf) {
! 279: print_tagq(h, h->metaf);
! 280: h->metaf = NULL;
! 281: }
! 282:
! 283: h->metal = h->metac;
! 284: h->metac = font;
! 285:
! 286: if (HTMLFONT_NONE != font)
! 287: h->metaf = HTMLFONT_BOLD == font ?
! 288: print_otag(h, TAG_B, 0, NULL) :
! 289: print_otag(h, TAG_I, 0, NULL);
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;
1.108 kristaps 339: case (DECO_SSPECIAL):
340: /* FALLTHROUGH */
1.82 kristaps 341: case (DECO_SPECIAL):
1.108 kristaps 342: print_spec(h, deco, seq, sz);
1.82 kristaps 343: break;
1.90 kristaps 344: case (DECO_PREVIOUS):
345: /* FALLTHROUGH */
1.88 kristaps 346: case (DECO_BOLD):
347: /* FALLTHROUGH */
348: case (DECO_ITALIC):
349: /* FALLTHROUGH */
350: case (DECO_ROMAN):
351: if (norecurse)
352: break;
353: print_metaf(h, deco);
354: break;
1.82 kristaps 355: default:
356: break;
357: }
358:
359: p += len - 1;
1.84 kristaps 360:
361: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
1.85 kristaps 362: nospace = 1;
1.32 kristaps 363: }
1.85 kristaps 364:
365: return(nospace);
1.14 kristaps 366: }
367:
368:
1.94 kristaps 369: static void
370: print_attr(struct html *h, const char *key, const char *val)
371: {
372: printf(" %s=\"", key);
373: (void)print_encode(h, val, 1);
374: putchar('\"');
375: }
376:
377:
1.51 kristaps 378: struct tag *
1.29 kristaps 379: print_otag(struct html *h, enum htmltag tag,
380: int sz, const struct htmlpair *p)
1.14 kristaps 381: {
1.29 kristaps 382: int i;
1.30 kristaps 383: struct tag *t;
384:
1.94 kristaps 385: /* Push this tags onto the stack of open scopes. */
386:
1.30 kristaps 387: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.72 kristaps 388: t = malloc(sizeof(struct tag));
389: if (NULL == t) {
1.75 kristaps 390: perror(NULL);
1.112 kristaps 391: exit((int)MANDOCLEVEL_SYSERR);
1.72 kristaps 392: }
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:
1.94 kristaps 429: /* Accomodate for XML "well-formed" singleton escaping. */
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:
505:
1.51 kristaps 506: void
1.104 kristaps 507: print_text(struct html *h, const char *word)
1.1 kristaps 508: {
509:
1.104 kristaps 510: if (word[0] && '\0' == word[1])
511: switch (word[0]) {
1.29 kristaps 512: case('.'):
513: /* FALLTHROUGH */
514: case(','):
515: /* FALLTHROUGH */
516: case(';'):
517: /* FALLTHROUGH */
518: case(':'):
519: /* FALLTHROUGH */
520: case('?'):
521: /* FALLTHROUGH */
522: case('!'):
523: /* FALLTHROUGH */
524: case(')'):
525: /* FALLTHROUGH */
526: case(']'):
1.52 kristaps 527: if ( ! (HTML_IGNDELIM & h->flags))
528: h->flags |= HTML_NOSPACE;
1.30 kristaps 529: break;
1.29 kristaps 530: default:
531: break;
532: }
1.1 kristaps 533:
1.105 kristaps 534: if ( ! (HTML_NOSPACE & h->flags)) {
535: /* Manage keeps! */
536: if ( ! (HTML_KEEP & h->flags)) {
537: if (HTML_PREKEEP & h->flags)
538: h->flags |= HTML_KEEP;
539: putchar(' ');
540: } else
541: printf(" ");
542: }
1.30 kristaps 543:
1.122 ! kristaps 544: assert(NULL == h->metaf);
! 545: if (HTMLFONT_NONE != h->metac)
! 546: h->metaf = HTMLFONT_BOLD == h->metac ?
! 547: print_otag(h, TAG_B, 0, NULL) :
! 548: print_otag(h, TAG_I, 0, NULL);
! 549:
1.104 kristaps 550: assert(word);
551: if ( ! print_encode(h, word, 0))
1.109 kristaps 552: if ( ! (h->flags & HTML_NONOSPACE))
553: h->flags &= ~HTML_NOSPACE;
1.122 ! kristaps 554:
! 555: if (h->metaf) {
! 556: print_tagq(h, h->metaf);
! 557: h->metaf = NULL;
! 558: }
1.113 schwarze 559:
560: h->flags &= ~HTML_IGNDELIM;
1.8 kristaps 561:
1.98 kristaps 562: /*
563: * Note that we don't process the pipe: the parser sees it as
564: * punctuation, but we don't in terms of typography.
565: */
1.104 kristaps 566: if (word[0] && '\0' == word[1])
567: switch (word[0]) {
1.29 kristaps 568: case('('):
569: /* FALLTHROUGH */
570: case('['):
571: h->flags |= HTML_NOSPACE;
1.30 kristaps 572: break;
1.29 kristaps 573: default:
574: break;
575: }
1.1 kristaps 576: }
1.30 kristaps 577:
578:
1.51 kristaps 579: void
1.30 kristaps 580: print_tagq(struct html *h, const struct tag *until)
581: {
582: struct tag *tag;
583:
1.66 kristaps 584: while ((tag = h->tags.head) != NULL) {
1.89 kristaps 585: if (tag == h->metaf)
586: h->metaf = NULL;
1.30 kristaps 587: print_ctag(h, tag->tag);
1.66 kristaps 588: h->tags.head = tag->next;
1.30 kristaps 589: free(tag);
590: if (until && tag == until)
591: return;
592: }
593: }
594:
595:
1.51 kristaps 596: void
1.30 kristaps 597: print_stagq(struct html *h, const struct tag *suntil)
598: {
599: struct tag *tag;
600:
1.66 kristaps 601: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 602: if (suntil && tag == suntil)
603: return;
1.89 kristaps 604: if (tag == h->metaf)
605: h->metaf = NULL;
1.30 kristaps 606: print_ctag(h, tag->tag);
1.66 kristaps 607: h->tags.head = tag->next;
1.30 kristaps 608: free(tag);
609: }
610: }
1.55 kristaps 611:
612:
613: void
614: bufinit(struct html *h)
615: {
616:
617: h->buf[0] = '\0';
618: h->buflen = 0;
619: }
620:
621:
622: void
1.58 kristaps 623: bufcat_style(struct html *h, const char *key, const char *val)
624: {
625:
626: bufcat(h, key);
627: bufncat(h, ":", 1);
628: bufcat(h, val);
629: bufncat(h, ";", 1);
630: }
631:
632:
633: void
1.55 kristaps 634: bufcat(struct html *h, const char *p)
635: {
636:
637: bufncat(h, p, strlen(p));
638: }
639:
640:
641: void
642: buffmt(struct html *h, const char *fmt, ...)
643: {
644: va_list ap;
645:
646: va_start(ap, fmt);
1.56 kristaps 647: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 648: BUFSIZ - h->buflen - 1, fmt, ap);
649: va_end(ap);
650: h->buflen = strlen(h->buf);
651: }
652:
653:
654: void
655: bufncat(struct html *h, const char *p, size_t sz)
656: {
657:
658: if (h->buflen + sz > BUFSIZ - 1)
659: sz = BUFSIZ - 1 - h->buflen;
660:
661: (void)strncat(h->buf, p, sz);
662: h->buflen += sz;
663: }
664:
665:
666: void
667: buffmt_includes(struct html *h, const char *name)
668: {
669: const char *p, *pp;
670:
671: pp = h->base_includes;
1.61 kristaps 672:
673: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 674: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 675: switch (*(p + 1)) {
676: case('I'):
677: bufcat(h, name);
678: break;
679: default:
680: bufncat(h, p, 2);
681: break;
682: }
683: pp = p + 2;
684: }
685: if (pp)
686: bufcat(h, pp);
687: }
688:
689:
690: void
691: buffmt_man(struct html *h,
692: const char *name, const char *sec)
693: {
694: const char *p, *pp;
695:
696: pp = h->base_man;
1.61 kristaps 697:
698: /* LINTED */
699: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 700: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 701: switch (*(p + 1)) {
702: case('S'):
1.58 kristaps 703: bufcat(h, sec ? sec : "1");
1.55 kristaps 704: break;
705: case('N'):
1.58 kristaps 706: buffmt(h, name);
1.55 kristaps 707: break;
708: default:
709: bufncat(h, p, 2);
710: break;
711: }
712: pp = p + 2;
713: }
714: if (pp)
715: bufcat(h, pp);
716: }
1.58 kristaps 717:
718:
719: void
720: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
721: {
1.62 kristaps 722: double v;
1.63 kristaps 723: const char *u;
1.58 kristaps 724:
725: v = su->scale;
726:
727: switch (su->unit) {
728: case (SCALE_CM):
729: u = "cm";
730: break;
731: case (SCALE_IN):
732: u = "in";
733: break;
734: case (SCALE_PC):
735: u = "pc";
736: break;
737: case (SCALE_PT):
738: u = "pt";
739: break;
1.59 kristaps 740: case (SCALE_EM):
741: u = "em";
742: break;
1.58 kristaps 743: case (SCALE_MM):
744: if (0 == (v /= 100))
745: v = 1;
746: u = "em";
747: break;
1.59 kristaps 748: case (SCALE_EN):
749: u = "ex";
750: break;
751: case (SCALE_BU):
752: u = "ex";
753: break;
1.58 kristaps 754: case (SCALE_VS):
755: u = "em";
756: break;
757: default:
758: u = "ex";
759: break;
760: }
761:
1.103 kristaps 762: /*
763: * XXX: the CSS spec isn't clear as to which types accept
764: * integer or real numbers, so we just make them all decimals.
765: */
766: buffmt(h, "%s: %.2f%s;", p, v, u);
1.58 kristaps 767: }
1.65 kristaps 768:
1.68 kristaps 769:
770: void
1.70 kristaps 771: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 772: {
1.70 kristaps 773: int ssz;
1.68 kristaps 774:
775: assert(sz);
776:
777: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
778:
1.70 kristaps 779: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 780: /* Jump to end. */ ;
781:
1.70 kristaps 782: assert(sz > 2);
1.68 kristaps 783:
1.70 kristaps 784: /* We can't start with a number (bah). */
1.68 kristaps 785:
1.70 kristaps 786: *dst++ = 'x';
1.68 kristaps 787: *dst = '\0';
1.70 kristaps 788: sz--;
789:
790: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 791: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 792: sz -= ssz;
793: dst += ssz;
794: }
1.68 kristaps 795: }
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