Annotation of mandoc/html.c, Revision 1.129
1.129 ! kristaps 1: /* $Id: html.c,v 1.128 2011/03/17 08:49:34 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"
1.32 kristaps 35: #include "chars.h"
1.51 kristaps 36: #include "html.h"
1.64 kristaps 37: #include "main.h"
1.63 kristaps 38:
1.29 kristaps 39: struct htmldata {
1.63 kristaps 40: const char *name;
1.29 kristaps 41: int flags;
1.30 kristaps 42: #define HTML_CLRLINE (1 << 0)
43: #define HTML_NOSTACK (1 << 1)
1.93 kristaps 44: #define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */
1.29 kristaps 45: };
1.7 kristaps 46:
1.29 kristaps 47: static const struct htmldata htmltags[TAG_MAX] = {
1.30 kristaps 48: {"html", HTML_CLRLINE}, /* TAG_HTML */
49: {"head", HTML_CLRLINE}, /* TAG_HEAD */
50: {"body", HTML_CLRLINE}, /* TAG_BODY */
1.93 kristaps 51: {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */
1.33 kristaps 52: {"title", HTML_CLRLINE}, /* TAG_TITLE */
1.30 kristaps 53: {"div", HTML_CLRLINE}, /* TAG_DIV */
1.29 kristaps 54: {"h1", 0}, /* TAG_H1 */
55: {"h2", 0}, /* TAG_H2 */
56: {"span", 0}, /* TAG_SPAN */
1.99 kristaps 57: {"link", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */
1.93 kristaps 58: {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
1.30 kristaps 59: {"a", 0}, /* TAG_A */
1.33 kristaps 60: {"table", HTML_CLRLINE}, /* TAG_TABLE */
1.114 kristaps 61: {"tbody", HTML_CLRLINE}, /* TAG_TBODY */
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 */
1.114 kristaps 68: {"dl", HTML_CLRLINE}, /* TAG_DL */
69: {"dt", HTML_CLRLINE}, /* TAG_DT */
70: {"dd", HTML_CLRLINE}, /* TAG_DD */
1.115 kristaps 71: {"blockquote", HTML_CLRLINE}, /* TAG_BLOCKQUOTE */
1.116 kristaps 72: {"p", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_P */
1.118 kristaps 73: {"pre", HTML_CLRLINE }, /* TAG_PRE */
1.119 kristaps 74: {"b", 0 }, /* TAG_B */
1.120 kristaps 75: {"i", 0 }, /* TAG_I */
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 */
1.125 kristaps 94: "colspan", /* ATTR_COLSPAN */
1.29 kristaps 95: };
1.10 kristaps 96:
1.126 schwarze 97: static void print_num(struct html *, const char *, size_t);
1.108 kristaps 98: static void print_spec(struct html *, enum roffdeco,
99: const char *, size_t);
1.83 kristaps 100: static void print_res(struct html *, const char *, size_t);
1.82 kristaps 101: static void print_ctag(struct html *, enum htmltag);
1.93 kristaps 102: static void print_doctype(struct html *);
103: static void print_xmltype(struct html *);
1.88 kristaps 104: static int print_encode(struct html *, const char *, int);
105: static void print_metaf(struct html *, enum roffdeco);
1.94 kristaps 106: static void print_attr(struct html *,
107: const char *, const char *);
1.93 kristaps 108: static void *ml_alloc(char *, enum htmltype);
1.82 kristaps 109:
110:
1.93 kristaps 111: static void *
112: ml_alloc(char *outopts, enum htmltype type)
1.10 kristaps 113: {
1.30 kristaps 114: struct html *h;
1.63 kristaps 115: const char *toks[4];
116: char *v;
1.43 kristaps 117:
118: toks[0] = "style";
1.53 kristaps 119: toks[1] = "man";
1.54 kristaps 120: toks[2] = "includes";
121: toks[3] = NULL;
1.30 kristaps 122:
1.128 kristaps 123: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 124:
1.93 kristaps 125: h->type = type;
1.66 kristaps 126: h->tags.head = NULL;
1.72 kristaps 127: h->symtab = chars_init(CHARS_HTML);
1.41 kristaps 128:
1.47 kristaps 129: while (outopts && *outopts)
1.63 kristaps 130: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 131: case (0):
132: h->style = v;
133: break;
134: case (1):
1.53 kristaps 135: h->base_man = v;
1.43 kristaps 136: break;
1.54 kristaps 137: case (2):
138: h->base_includes = v;
139: break;
1.43 kristaps 140: default:
141: break;
142: }
143:
1.30 kristaps 144: return(h);
1.29 kristaps 145: }
1.10 kristaps 146:
1.93 kristaps 147: void *
148: html_alloc(char *outopts)
149: {
150:
151: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
152: }
153:
154:
155: void *
156: xhtml_alloc(char *outopts)
157: {
158:
159: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
160: }
161:
1.33 kristaps 162:
1.29 kristaps 163: void
164: html_free(void *p)
165: {
1.30 kristaps 166: struct tag *tag;
167: struct html *h;
168:
169: h = (struct html *)p;
1.37 kristaps 170:
1.66 kristaps 171: while ((tag = h->tags.head) != NULL) {
172: h->tags.head = tag->next;
1.30 kristaps 173: free(tag);
174: }
1.36 kristaps 175:
176: if (h->symtab)
177: chars_free(h->symtab);
1.53 kristaps 178:
1.30 kristaps 179: free(h);
1.10 kristaps 180: }
1.2 kristaps 181:
1.33 kristaps 182:
1.51 kristaps 183: void
1.29 kristaps 184: print_gen_head(struct html *h)
185: {
1.41 kristaps 186: struct htmlpair tag[4];
187:
188: tag[0].key = ATTR_HTTPEQUIV;
189: tag[0].val = "Content-Type";
190: tag[1].key = ATTR_CONTENT;
191: tag[1].val = "text/html; charset=utf-8";
192: print_otag(h, TAG_META, 2, tag);
193:
194: tag[0].key = ATTR_NAME;
195: tag[0].val = "resource-type";
196: tag[1].key = ATTR_CONTENT;
197: tag[1].val = "document";
198: print_otag(h, TAG_META, 2, tag);
199:
200: if (h->style) {
201: tag[0].key = ATTR_REL;
202: tag[0].val = "stylesheet";
203: tag[1].key = ATTR_HREF;
204: tag[1].val = h->style;
205: tag[2].key = ATTR_TYPE;
206: tag[2].val = "text/css";
207: tag[3].key = ATTR_MEDIA;
208: tag[3].val = "all";
209: print_otag(h, TAG_LINK, 4, tag);
210: }
1.4 kristaps 211: }
212:
1.127 kristaps 213: /* ARGSUSED */
1.29 kristaps 214: static void
1.126 schwarze 215: print_num(struct html *h, const char *p, size_t len)
216: {
217: const char *rhs;
218:
219: rhs = chars_num2char(p, len);
220: if (rhs)
221: putchar((int)*rhs);
222: }
223:
224: static void
1.108 kristaps 225: print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
1.32 kristaps 226: {
1.107 kristaps 227: int cp;
1.32 kristaps 228: const char *rhs;
229: size_t sz;
230:
1.107 kristaps 231: if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
232: printf("&#%d;", cp);
233: return;
1.108 kristaps 234: } else if (-1 == cp && DECO_SSPECIAL == d) {
235: fwrite(p, 1, len, stdout);
236: return;
1.107 kristaps 237: } else if (-1 == cp)
238: return;
1.32 kristaps 239:
1.107 kristaps 240: if (NULL != (rhs = chars_spec2str(h->symtab, p, len, &sz)))
241: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 242: }
243:
1.33 kristaps 244:
1.32 kristaps 245: static void
1.83 kristaps 246: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 247: {
1.107 kristaps 248: int cp;
1.32 kristaps 249: const char *rhs;
250: size_t sz;
251:
1.107 kristaps 252: if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
253: printf("&#%d;", cp);
254: return;
255: } else if (-1 == cp)
256: return;
1.32 kristaps 257:
1.107 kristaps 258: if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
259: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 260: }
261:
1.33 kristaps 262:
1.88 kristaps 263: static void
264: print_metaf(struct html *h, enum roffdeco deco)
265: {
1.90 kristaps 266: enum htmlfont font;
1.88 kristaps 267:
268: switch (deco) {
1.90 kristaps 269: case (DECO_PREVIOUS):
270: font = h->metal;
1.88 kristaps 271: break;
272: case (DECO_ITALIC):
1.90 kristaps 273: font = HTMLFONT_ITALIC;
274: break;
275: case (DECO_BOLD):
276: font = HTMLFONT_BOLD;
1.88 kristaps 277: break;
278: case (DECO_ROMAN):
1.90 kristaps 279: font = HTMLFONT_NONE;
1.88 kristaps 280: break;
281: default:
282: abort();
283: /* NOTREACHED */
284: }
285:
1.122 kristaps 286: if (h->metaf) {
287: print_tagq(h, h->metaf);
288: h->metaf = NULL;
289: }
290:
291: h->metal = h->metac;
292: h->metac = font;
293:
294: if (HTMLFONT_NONE != font)
295: h->metaf = HTMLFONT_BOLD == font ?
296: print_otag(h, TAG_B, 0, NULL) :
297: print_otag(h, TAG_I, 0, NULL);
1.88 kristaps 298: }
299:
300:
1.85 kristaps 301: static int
1.88 kristaps 302: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 303: {
1.77 kristaps 304: size_t sz;
1.85 kristaps 305: int len, nospace;
1.82 kristaps 306: const char *seq;
307: enum roffdeco deco;
1.100 kristaps 308: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 309:
1.85 kristaps 310: nospace = 0;
311:
1.32 kristaps 312: for (; *p; p++) {
1.100 kristaps 313: sz = strcspn(p, rejs);
1.77 kristaps 314:
315: fwrite(p, 1, sz, stdout);
1.80 kristaps 316: p += /* LINTED */
317: sz;
1.77 kristaps 318:
1.82 kristaps 319: if ('<' == *p) {
320: printf("<");
321: continue;
322: } else if ('>' == *p) {
323: printf(">");
324: continue;
325: } else if ('&' == *p) {
326: printf("&");
1.34 kristaps 327: continue;
1.100 kristaps 328: } else if (ASCII_HYPH == *p) {
329: /*
330: * Note: "soft hyphens" aren't graphically
331: * displayed when not breaking the text; we want
332: * them to be displayed.
333: */
334: /*printf("­");*/
335: putchar('-');
336: continue;
1.77 kristaps 337: } else if ('\0' == *p)
338: break;
339:
1.82 kristaps 340: seq = ++p;
341: len = a2roffdeco(&deco, &seq, &sz);
342:
343: switch (deco) {
1.126 schwarze 344: case (DECO_NUMBERED):
345: print_num(h, seq, sz);
346: break;
1.82 kristaps 347: case (DECO_RESERVED):
348: print_res(h, seq, sz);
349: break;
1.108 kristaps 350: case (DECO_SSPECIAL):
351: /* FALLTHROUGH */
1.82 kristaps 352: case (DECO_SPECIAL):
1.108 kristaps 353: print_spec(h, deco, seq, sz);
1.82 kristaps 354: break;
1.90 kristaps 355: case (DECO_PREVIOUS):
356: /* FALLTHROUGH */
1.88 kristaps 357: case (DECO_BOLD):
358: /* FALLTHROUGH */
359: case (DECO_ITALIC):
360: /* FALLTHROUGH */
361: case (DECO_ROMAN):
362: if (norecurse)
363: break;
364: print_metaf(h, deco);
365: break;
1.82 kristaps 366: default:
367: break;
368: }
369:
370: p += len - 1;
1.84 kristaps 371:
372: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
1.85 kristaps 373: nospace = 1;
1.32 kristaps 374: }
1.85 kristaps 375:
376: return(nospace);
1.14 kristaps 377: }
378:
379:
1.94 kristaps 380: static void
381: print_attr(struct html *h, const char *key, const char *val)
382: {
383: printf(" %s=\"", key);
384: (void)print_encode(h, val, 1);
385: putchar('\"');
386: }
387:
388:
1.51 kristaps 389: struct tag *
1.29 kristaps 390: print_otag(struct html *h, enum htmltag tag,
391: int sz, const struct htmlpair *p)
1.14 kristaps 392: {
1.29 kristaps 393: int i;
1.30 kristaps 394: struct tag *t;
395:
1.94 kristaps 396: /* Push this tags onto the stack of open scopes. */
397:
1.30 kristaps 398: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.128 kristaps 399: t = mandoc_malloc(sizeof(struct tag));
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;
1.117 kristaps 450:
451: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
452: putchar('\n');
453:
1.30 kristaps 454: return(t);
1.14 kristaps 455: }
456:
457:
1.29 kristaps 458: static void
459: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 460: {
461:
1.29 kristaps 462: printf("</%s>", htmltags[tag].name);
1.71 kristaps 463: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 464: h->flags |= HTML_NOSPACE;
1.78 kristaps 465: putchar('\n');
1.87 kristaps 466: }
1.14 kristaps 467: }
468:
469:
1.51 kristaps 470: void
1.93 kristaps 471: print_gen_decls(struct html *h)
1.1 kristaps 472: {
1.93 kristaps 473:
474: print_xmltype(h);
475: print_doctype(h);
476: }
477:
478:
479: static void
480: print_xmltype(struct html *h)
481: {
482:
1.100 kristaps 483: if (HTML_XHTML_1_0_STRICT == h->type)
1.121 kristaps 484: puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.93 kristaps 485: }
486:
487:
488: static void
489: print_doctype(struct html *h)
490: {
491: const char *doctype;
492: const char *dtd;
1.96 kristaps 493: const char *name;
1.93 kristaps 494:
495: switch (h->type) {
496: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 497: name = "HTML";
1.93 kristaps 498: doctype = "-//W3C//DTD HTML 4.01//EN";
499: dtd = "http://www.w3.org/TR/html4/strict.dtd";
500: break;
501: default:
1.96 kristaps 502: name = "html";
1.93 kristaps 503: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
504: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
505: break;
506: }
507:
1.96 kristaps 508: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
509: name, doctype, dtd);
1.1 kristaps 510: }
511:
512:
1.51 kristaps 513: void
1.104 kristaps 514: print_text(struct html *h, const char *word)
1.1 kristaps 515: {
516:
1.129 ! kristaps 517: if (DELIM_CLOSE == mandoc_isdelim(word))
! 518: if ( ! (HTML_IGNDELIM & h->flags))
! 519: h->flags |= HTML_NOSPACE;
1.1 kristaps 520:
1.105 kristaps 521: if ( ! (HTML_NOSPACE & h->flags)) {
522: /* Manage keeps! */
523: if ( ! (HTML_KEEP & h->flags)) {
524: if (HTML_PREKEEP & h->flags)
525: h->flags |= HTML_KEEP;
526: putchar(' ');
527: } else
528: printf(" ");
529: }
1.30 kristaps 530:
1.122 kristaps 531: assert(NULL == h->metaf);
532: if (HTMLFONT_NONE != h->metac)
533: h->metaf = HTMLFONT_BOLD == h->metac ?
534: print_otag(h, TAG_B, 0, NULL) :
535: print_otag(h, TAG_I, 0, NULL);
536:
1.104 kristaps 537: assert(word);
538: if ( ! print_encode(h, word, 0))
1.109 kristaps 539: if ( ! (h->flags & HTML_NONOSPACE))
540: h->flags &= ~HTML_NOSPACE;
1.122 kristaps 541:
542: if (h->metaf) {
543: print_tagq(h, h->metaf);
544: h->metaf = NULL;
545: }
1.113 schwarze 546:
547: h->flags &= ~HTML_IGNDELIM;
1.8 kristaps 548:
1.129 ! kristaps 549: if (DELIM_OPEN == mandoc_isdelim(word))
! 550: h->flags |= HTML_NOSPACE;
1.1 kristaps 551: }
1.30 kristaps 552:
553:
1.51 kristaps 554: void
1.30 kristaps 555: print_tagq(struct html *h, const struct tag *until)
556: {
557: struct tag *tag;
558:
1.66 kristaps 559: while ((tag = h->tags.head) != NULL) {
1.125 kristaps 560: /*
561: * Remember to close out and nullify the current
562: * meta-font and table, if applicable.
563: */
1.89 kristaps 564: if (tag == h->metaf)
565: h->metaf = NULL;
1.125 kristaps 566: if (tag == h->tblt)
567: h->tblt = NULL;
1.30 kristaps 568: print_ctag(h, tag->tag);
1.66 kristaps 569: h->tags.head = tag->next;
1.30 kristaps 570: free(tag);
571: if (until && tag == until)
572: return;
573: }
574: }
575:
576:
1.51 kristaps 577: void
1.30 kristaps 578: print_stagq(struct html *h, const struct tag *suntil)
579: {
580: struct tag *tag;
581:
1.66 kristaps 582: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 583: if (suntil && tag == suntil)
584: return;
1.125 kristaps 585: /*
586: * Remember to close out and nullify the current
587: * meta-font and table, if applicable.
588: */
1.89 kristaps 589: if (tag == h->metaf)
590: h->metaf = NULL;
1.125 kristaps 591: if (tag == h->tblt)
592: h->tblt = NULL;
1.30 kristaps 593: print_ctag(h, tag->tag);
1.66 kristaps 594: h->tags.head = tag->next;
1.30 kristaps 595: free(tag);
596: }
597: }
1.55 kristaps 598:
599:
600: void
601: bufinit(struct html *h)
602: {
603:
604: h->buf[0] = '\0';
605: h->buflen = 0;
606: }
607:
608:
609: void
1.58 kristaps 610: bufcat_style(struct html *h, const char *key, const char *val)
611: {
612:
613: bufcat(h, key);
614: bufncat(h, ":", 1);
615: bufcat(h, val);
616: bufncat(h, ";", 1);
617: }
618:
619:
620: void
1.55 kristaps 621: bufcat(struct html *h, const char *p)
622: {
623:
624: bufncat(h, p, strlen(p));
625: }
626:
627:
628: void
629: buffmt(struct html *h, const char *fmt, ...)
630: {
631: va_list ap;
632:
633: va_start(ap, fmt);
1.56 kristaps 634: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 635: BUFSIZ - h->buflen - 1, fmt, ap);
636: va_end(ap);
637: h->buflen = strlen(h->buf);
638: }
639:
640:
641: void
642: bufncat(struct html *h, const char *p, size_t sz)
643: {
644:
645: if (h->buflen + sz > BUFSIZ - 1)
646: sz = BUFSIZ - 1 - h->buflen;
647:
648: (void)strncat(h->buf, p, sz);
649: h->buflen += sz;
650: }
651:
652:
653: void
654: buffmt_includes(struct html *h, const char *name)
655: {
656: const char *p, *pp;
657:
658: pp = h->base_includes;
1.61 kristaps 659:
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('I'):
664: bufcat(h, name);
665: break;
666: default:
667: bufncat(h, p, 2);
668: break;
669: }
670: pp = p + 2;
671: }
672: if (pp)
673: bufcat(h, pp);
674: }
675:
676:
677: void
678: buffmt_man(struct html *h,
679: const char *name, const char *sec)
680: {
681: const char *p, *pp;
682:
683: pp = h->base_man;
1.61 kristaps 684:
685: /* LINTED */
686: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 687: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 688: switch (*(p + 1)) {
689: case('S'):
1.58 kristaps 690: bufcat(h, sec ? sec : "1");
1.55 kristaps 691: break;
692: case('N'):
1.58 kristaps 693: buffmt(h, name);
1.55 kristaps 694: break;
695: default:
696: bufncat(h, p, 2);
697: break;
698: }
699: pp = p + 2;
700: }
701: if (pp)
702: bufcat(h, pp);
703: }
1.58 kristaps 704:
705:
706: void
707: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
708: {
1.62 kristaps 709: double v;
1.63 kristaps 710: const char *u;
1.58 kristaps 711:
712: v = su->scale;
713:
714: switch (su->unit) {
715: case (SCALE_CM):
716: u = "cm";
717: break;
718: case (SCALE_IN):
719: u = "in";
720: break;
721: case (SCALE_PC):
722: u = "pc";
723: break;
724: case (SCALE_PT):
725: u = "pt";
726: break;
1.59 kristaps 727: case (SCALE_EM):
728: u = "em";
729: break;
1.58 kristaps 730: case (SCALE_MM):
731: if (0 == (v /= 100))
732: v = 1;
733: u = "em";
734: break;
1.59 kristaps 735: case (SCALE_EN):
736: u = "ex";
737: break;
738: case (SCALE_BU):
739: u = "ex";
740: break;
1.58 kristaps 741: case (SCALE_VS):
742: u = "em";
743: break;
744: default:
745: u = "ex";
746: break;
747: }
748:
1.103 kristaps 749: /*
750: * XXX: the CSS spec isn't clear as to which types accept
751: * integer or real numbers, so we just make them all decimals.
752: */
753: buffmt(h, "%s: %.2f%s;", p, v, u);
1.58 kristaps 754: }
1.65 kristaps 755:
1.68 kristaps 756:
757: void
1.70 kristaps 758: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 759: {
1.70 kristaps 760: int ssz;
1.68 kristaps 761:
1.124 schwarze 762: assert(sz > 2);
1.68 kristaps 763:
764: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
765:
1.124 schwarze 766: /* We can't start with a number (bah). */
767:
768: if ('#' == *dst) {
769: dst++;
770: sz--;
771: }
772: if ('\0' == *dst) {
773: *dst++ = 'x';
774: *dst = '\0';
775: sz--;
776: }
777:
1.70 kristaps 778: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 779: /* Jump to end. */ ;
1.70 kristaps 780:
781: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 782: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 783: sz -= ssz;
784: dst += ssz;
785: }
1.68 kristaps 786: }
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