Annotation of mandoc/html.c, Revision 1.118
1.118 ! kristaps 1: /* $Id: html.c,v 1.117 2010/12/17 08:17:40 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 */
1.29 kristaps 73: };
1.10 kristaps 74:
1.90 kristaps 75: static const char *const htmlfonts[HTMLFONT_MAX] = {
76: "roman",
77: "bold",
78: "italic"
79: };
80:
1.82 kristaps 81: static const char *const htmlattrs[ATTR_MAX] = {
1.29 kristaps 82: "http-equiv",
83: "content",
84: "name",
85: "rel",
86: "href",
87: "type",
88: "media",
1.33 kristaps 89: "class",
90: "style",
91: "width",
92: "valign",
1.54 kristaps 93: "target",
1.57 kristaps 94: "id",
1.67 kristaps 95: "summary",
1.29 kristaps 96: };
1.10 kristaps 97:
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:
1.72 kristaps 123: h = calloc(1, sizeof(struct html));
124: if (NULL == h) {
1.75 kristaps 125: perror(NULL);
1.112 kristaps 126: exit((int)MANDOCLEVEL_SYSERR);
1.72 kristaps 127: }
1.10 kristaps 128:
1.93 kristaps 129: h->type = type;
1.66 kristaps 130: h->tags.head = NULL;
1.72 kristaps 131: h->symtab = chars_init(CHARS_HTML);
1.41 kristaps 132:
1.47 kristaps 133: while (outopts && *outopts)
1.63 kristaps 134: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 135: case (0):
136: h->style = v;
137: break;
138: case (1):
1.53 kristaps 139: h->base_man = v;
1.43 kristaps 140: break;
1.54 kristaps 141: case (2):
142: h->base_includes = v;
143: break;
1.43 kristaps 144: default:
145: break;
146: }
147:
1.30 kristaps 148: return(h);
1.29 kristaps 149: }
1.10 kristaps 150:
1.93 kristaps 151: void *
152: html_alloc(char *outopts)
153: {
154:
155: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
156: }
157:
158:
159: void *
160: xhtml_alloc(char *outopts)
161: {
162:
163: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
164: }
165:
1.33 kristaps 166:
1.29 kristaps 167: void
168: html_free(void *p)
169: {
1.30 kristaps 170: struct tag *tag;
171: struct html *h;
172:
173: h = (struct html *)p;
1.37 kristaps 174:
1.66 kristaps 175: while ((tag = h->tags.head) != NULL) {
176: h->tags.head = tag->next;
1.30 kristaps 177: free(tag);
178: }
1.36 kristaps 179:
180: if (h->symtab)
181: chars_free(h->symtab);
1.53 kristaps 182:
1.30 kristaps 183: free(h);
1.10 kristaps 184: }
1.2 kristaps 185:
1.33 kristaps 186:
1.51 kristaps 187: void
1.29 kristaps 188: print_gen_head(struct html *h)
189: {
1.41 kristaps 190: struct htmlpair tag[4];
191:
192: tag[0].key = ATTR_HTTPEQUIV;
193: tag[0].val = "Content-Type";
194: tag[1].key = ATTR_CONTENT;
195: tag[1].val = "text/html; charset=utf-8";
196: print_otag(h, TAG_META, 2, tag);
197:
198: tag[0].key = ATTR_NAME;
199: tag[0].val = "resource-type";
200: tag[1].key = ATTR_CONTENT;
201: tag[1].val = "document";
202: print_otag(h, TAG_META, 2, tag);
203:
204: if (h->style) {
205: tag[0].key = ATTR_REL;
206: tag[0].val = "stylesheet";
207: tag[1].key = ATTR_HREF;
208: tag[1].val = h->style;
209: tag[2].key = ATTR_TYPE;
210: tag[2].val = "text/css";
211: tag[3].key = ATTR_MEDIA;
212: tag[3].val = "all";
213: print_otag(h, TAG_LINK, 4, tag);
214: }
1.4 kristaps 215: }
216:
1.33 kristaps 217:
1.29 kristaps 218: static void
1.108 kristaps 219: print_spec(struct html *h, enum roffdeco d, const char *p, size_t len)
1.32 kristaps 220: {
1.107 kristaps 221: int cp;
1.32 kristaps 222: const char *rhs;
223: size_t sz;
224:
1.107 kristaps 225: if ((cp = chars_spec2cp(h->symtab, p, len)) > 0) {
226: printf("&#%d;", cp);
227: return;
1.108 kristaps 228: } else if (-1 == cp && DECO_SSPECIAL == d) {
229: fwrite(p, 1, len, stdout);
230: return;
1.107 kristaps 231: } else if (-1 == cp)
232: return;
1.32 kristaps 233:
1.107 kristaps 234: if (NULL != (rhs = chars_spec2str(h->symtab, p, len, &sz)))
235: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 236: }
237:
1.33 kristaps 238:
1.32 kristaps 239: static void
1.83 kristaps 240: print_res(struct html *h, const char *p, size_t len)
1.32 kristaps 241: {
1.107 kristaps 242: int cp;
1.32 kristaps 243: const char *rhs;
244: size_t sz;
245:
1.107 kristaps 246: if ((cp = chars_res2cp(h->symtab, p, len)) > 0) {
247: printf("&#%d;", cp);
248: return;
249: } else if (-1 == cp)
250: return;
1.32 kristaps 251:
1.107 kristaps 252: if (NULL != (rhs = chars_res2str(h->symtab, p, len, &sz)))
253: fwrite(rhs, 1, sz, stdout);
1.32 kristaps 254: }
255:
1.33 kristaps 256:
1.90 kristaps 257: struct tag *
258: print_ofont(struct html *h, enum htmlfont font)
259: {
260: struct htmlpair tag;
261:
262: h->metal = h->metac;
263: h->metac = font;
264:
265: /* FIXME: DECO_ROMAN should just close out preexisting. */
266:
1.91 kristaps 267: if (h->metaf && h->tags.head == h->metaf)
1.90 kristaps 268: print_tagq(h, h->metaf);
269:
270: PAIR_CLASS_INIT(&tag, htmlfonts[font]);
271: h->metaf = print_otag(h, TAG_SPAN, 1, &tag);
272: return(h->metaf);
273: }
274:
275:
1.88 kristaps 276: static void
277: print_metaf(struct html *h, enum roffdeco deco)
278: {
1.90 kristaps 279: enum htmlfont font;
1.88 kristaps 280:
281: switch (deco) {
1.90 kristaps 282: case (DECO_PREVIOUS):
283: font = h->metal;
1.88 kristaps 284: break;
285: case (DECO_ITALIC):
1.90 kristaps 286: font = HTMLFONT_ITALIC;
287: break;
288: case (DECO_BOLD):
289: font = HTMLFONT_BOLD;
1.88 kristaps 290: break;
291: case (DECO_ROMAN):
1.90 kristaps 292: font = HTMLFONT_NONE;
1.88 kristaps 293: break;
294: default:
295: abort();
296: /* NOTREACHED */
297: }
298:
1.90 kristaps 299: (void)print_ofont(h, font);
1.88 kristaps 300: }
301:
302:
1.85 kristaps 303: static int
1.88 kristaps 304: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 305: {
1.77 kristaps 306: size_t sz;
1.85 kristaps 307: int len, nospace;
1.82 kristaps 308: const char *seq;
309: enum roffdeco deco;
1.100 kristaps 310: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 311:
1.85 kristaps 312: nospace = 0;
313:
1.32 kristaps 314: for (; *p; p++) {
1.100 kristaps 315: sz = strcspn(p, rejs);
1.77 kristaps 316:
317: fwrite(p, 1, sz, stdout);
1.80 kristaps 318: p += /* LINTED */
319: sz;
1.77 kristaps 320:
1.82 kristaps 321: if ('<' == *p) {
322: printf("<");
323: continue;
324: } else if ('>' == *p) {
325: printf(">");
326: continue;
327: } else if ('&' == *p) {
328: printf("&");
1.34 kristaps 329: continue;
1.100 kristaps 330: } else if (ASCII_HYPH == *p) {
331: /*
332: * Note: "soft hyphens" aren't graphically
333: * displayed when not breaking the text; we want
334: * them to be displayed.
335: */
336: /*printf("­");*/
337: putchar('-');
338: continue;
1.77 kristaps 339: } else if ('\0' == *p)
340: break;
341:
1.82 kristaps 342: seq = ++p;
343: len = a2roffdeco(&deco, &seq, &sz);
344:
345: switch (deco) {
346: case (DECO_RESERVED):
347: print_res(h, seq, sz);
348: break;
1.108 kristaps 349: case (DECO_SSPECIAL):
350: /* FALLTHROUGH */
1.82 kristaps 351: case (DECO_SPECIAL):
1.108 kristaps 352: print_spec(h, deco, seq, sz);
1.82 kristaps 353: break;
1.90 kristaps 354: case (DECO_PREVIOUS):
355: /* FALLTHROUGH */
1.88 kristaps 356: case (DECO_BOLD):
357: /* FALLTHROUGH */
358: case (DECO_ITALIC):
359: /* FALLTHROUGH */
360: case (DECO_ROMAN):
361: if (norecurse)
362: break;
363: print_metaf(h, deco);
364: break;
1.82 kristaps 365: default:
366: break;
367: }
368:
369: p += len - 1;
1.84 kristaps 370:
371: if (DECO_NOSPACE == deco && '\0' == *(p + 1))
1.85 kristaps 372: nospace = 1;
1.32 kristaps 373: }
1.85 kristaps 374:
375: return(nospace);
1.14 kristaps 376: }
377:
378:
1.94 kristaps 379: static void
380: print_attr(struct html *h, const char *key, const char *val)
381: {
382: printf(" %s=\"", key);
383: (void)print_encode(h, val, 1);
384: putchar('\"');
385: }
386:
387:
1.51 kristaps 388: struct tag *
1.29 kristaps 389: print_otag(struct html *h, enum htmltag tag,
390: int sz, const struct htmlpair *p)
1.14 kristaps 391: {
1.29 kristaps 392: int i;
1.30 kristaps 393: struct tag *t;
394:
1.94 kristaps 395: /* Push this tags onto the stack of open scopes. */
396:
1.30 kristaps 397: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.72 kristaps 398: t = malloc(sizeof(struct tag));
399: if (NULL == t) {
1.75 kristaps 400: perror(NULL);
1.112 kristaps 401: exit((int)MANDOCLEVEL_SYSERR);
1.72 kristaps 402: }
1.30 kristaps 403: t->tag = tag;
1.66 kristaps 404: t->next = h->tags.head;
405: h->tags.head = t;
1.30 kristaps 406: } else
407: t = NULL;
1.29 kristaps 408:
409: if ( ! (HTML_NOSPACE & h->flags))
1.105 kristaps 410: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
411: /* Manage keeps! */
412: if ( ! (HTML_KEEP & h->flags)) {
413: if (HTML_PREKEEP & h->flags)
414: h->flags |= HTML_KEEP;
415: putchar(' ');
416: } else
417: printf(" ");
418: }
1.29 kristaps 419:
1.109 kristaps 420: if ( ! (h->flags & HTML_NONOSPACE))
421: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 422: else
423: h->flags |= HTML_NOSPACE;
1.109 kristaps 424:
1.94 kristaps 425: /* Print out the tag name and attributes. */
426:
1.29 kristaps 427: printf("<%s", htmltags[tag].name);
1.94 kristaps 428: for (i = 0; i < sz; i++)
429: print_attr(h, htmlattrs[p[i].key], p[i].val);
430:
431: /* Add non-overridable attributes. */
432:
433: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
434: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
435: print_attr(h, "xml:lang", "en");
436: print_attr(h, "lang", "en");
1.29 kristaps 437: }
1.93 kristaps 438:
1.94 kristaps 439: /* Accomodate for XML "well-formed" singleton escaping. */
440:
1.93 kristaps 441: if (HTML_AUTOCLOSE & htmltags[tag].flags)
442: switch (h->type) {
443: case (HTML_XHTML_1_0_STRICT):
444: putchar('/');
445: break;
446: default:
447: break;
448: }
449:
1.78 kristaps 450: putchar('>');
1.14 kristaps 451:
1.29 kristaps 452: h->flags |= HTML_NOSPACE;
1.117 kristaps 453:
454: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
455: putchar('\n');
456:
1.30 kristaps 457: return(t);
1.14 kristaps 458: }
459:
460:
1.29 kristaps 461: static void
462: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 463: {
464:
1.29 kristaps 465: printf("</%s>", htmltags[tag].name);
1.71 kristaps 466: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 467: h->flags |= HTML_NOSPACE;
1.78 kristaps 468: putchar('\n');
1.87 kristaps 469: }
1.14 kristaps 470: }
471:
472:
1.51 kristaps 473: void
1.93 kristaps 474: print_gen_decls(struct html *h)
1.1 kristaps 475: {
1.93 kristaps 476:
477: print_xmltype(h);
478: print_doctype(h);
479: }
480:
481:
482: static void
483: print_xmltype(struct html *h)
484: {
485:
1.100 kristaps 486: if (HTML_XHTML_1_0_STRICT == h->type)
487: printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.93 kristaps 488: }
489:
490:
491: static void
492: print_doctype(struct html *h)
493: {
494: const char *doctype;
495: const char *dtd;
1.96 kristaps 496: const char *name;
1.93 kristaps 497:
498: switch (h->type) {
499: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 500: name = "HTML";
1.93 kristaps 501: doctype = "-//W3C//DTD HTML 4.01//EN";
502: dtd = "http://www.w3.org/TR/html4/strict.dtd";
503: break;
504: default:
1.96 kristaps 505: name = "html";
1.93 kristaps 506: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
507: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
508: break;
509: }
510:
1.96 kristaps 511: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
512: name, doctype, dtd);
1.1 kristaps 513: }
514:
515:
1.51 kristaps 516: void
1.104 kristaps 517: print_text(struct html *h, const char *word)
1.1 kristaps 518: {
519:
1.104 kristaps 520: if (word[0] && '\0' == word[1])
521: switch (word[0]) {
1.29 kristaps 522: case('.'):
523: /* FALLTHROUGH */
524: case(','):
525: /* FALLTHROUGH */
526: case(';'):
527: /* FALLTHROUGH */
528: case(':'):
529: /* FALLTHROUGH */
530: case('?'):
531: /* FALLTHROUGH */
532: case('!'):
533: /* FALLTHROUGH */
534: case(')'):
535: /* FALLTHROUGH */
536: case(']'):
1.52 kristaps 537: if ( ! (HTML_IGNDELIM & h->flags))
538: h->flags |= HTML_NOSPACE;
1.30 kristaps 539: break;
1.29 kristaps 540: default:
541: break;
542: }
1.1 kristaps 543:
1.105 kristaps 544: if ( ! (HTML_NOSPACE & h->flags)) {
545: /* Manage keeps! */
546: if ( ! (HTML_KEEP & h->flags)) {
547: if (HTML_PREKEEP & h->flags)
548: h->flags |= HTML_KEEP;
549: putchar(' ');
550: } else
551: printf(" ");
552: }
1.30 kristaps 553:
1.104 kristaps 554: assert(word);
555: if ( ! print_encode(h, word, 0))
1.109 kristaps 556: if ( ! (h->flags & HTML_NONOSPACE))
557: h->flags &= ~HTML_NOSPACE;
1.113 schwarze 558:
559: h->flags &= ~HTML_IGNDELIM;
1.8 kristaps 560:
1.98 kristaps 561: /*
562: * Note that we don't process the pipe: the parser sees it as
563: * punctuation, but we don't in terms of typography.
564: */
1.104 kristaps 565: if (word[0] && '\0' == word[1])
566: switch (word[0]) {
1.29 kristaps 567: case('('):
568: /* FALLTHROUGH */
569: case('['):
570: h->flags |= HTML_NOSPACE;
1.30 kristaps 571: break;
1.29 kristaps 572: default:
573: break;
574: }
1.1 kristaps 575: }
1.30 kristaps 576:
577:
1.51 kristaps 578: void
1.30 kristaps 579: print_tagq(struct html *h, const struct tag *until)
580: {
581: struct tag *tag;
582:
1.66 kristaps 583: while ((tag = h->tags.head) != NULL) {
1.89 kristaps 584: if (tag == h->metaf)
585: h->metaf = NULL;
1.30 kristaps 586: print_ctag(h, tag->tag);
1.66 kristaps 587: h->tags.head = tag->next;
1.30 kristaps 588: free(tag);
589: if (until && tag == until)
590: return;
591: }
592: }
593:
594:
1.51 kristaps 595: void
1.30 kristaps 596: print_stagq(struct html *h, const struct tag *suntil)
597: {
598: struct tag *tag;
599:
1.66 kristaps 600: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 601: if (suntil && tag == suntil)
602: return;
1.89 kristaps 603: if (tag == h->metaf)
604: h->metaf = NULL;
1.30 kristaps 605: print_ctag(h, tag->tag);
1.66 kristaps 606: h->tags.head = tag->next;
1.30 kristaps 607: free(tag);
608: }
609: }
1.55 kristaps 610:
611:
612: void
613: bufinit(struct html *h)
614: {
615:
616: h->buf[0] = '\0';
617: h->buflen = 0;
618: }
619:
620:
621: void
1.58 kristaps 622: bufcat_style(struct html *h, const char *key, const char *val)
623: {
624:
625: bufcat(h, key);
626: bufncat(h, ":", 1);
627: bufcat(h, val);
628: bufncat(h, ";", 1);
629: }
630:
631:
632: void
1.55 kristaps 633: bufcat(struct html *h, const char *p)
634: {
635:
636: bufncat(h, p, strlen(p));
637: }
638:
639:
640: void
641: buffmt(struct html *h, const char *fmt, ...)
642: {
643: va_list ap;
644:
645: va_start(ap, fmt);
1.56 kristaps 646: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 647: BUFSIZ - h->buflen - 1, fmt, ap);
648: va_end(ap);
649: h->buflen = strlen(h->buf);
650: }
651:
652:
653: void
654: bufncat(struct html *h, const char *p, size_t sz)
655: {
656:
657: if (h->buflen + sz > BUFSIZ - 1)
658: sz = BUFSIZ - 1 - h->buflen;
659:
660: (void)strncat(h->buf, p, sz);
661: h->buflen += sz;
662: }
663:
664:
665: void
666: buffmt_includes(struct html *h, const char *name)
667: {
668: const char *p, *pp;
669:
670: pp = h->base_includes;
1.61 kristaps 671:
672: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 673: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 674: switch (*(p + 1)) {
675: case('I'):
676: bufcat(h, name);
677: break;
678: default:
679: bufncat(h, p, 2);
680: break;
681: }
682: pp = p + 2;
683: }
684: if (pp)
685: bufcat(h, pp);
686: }
687:
688:
689: void
690: buffmt_man(struct html *h,
691: const char *name, const char *sec)
692: {
693: const char *p, *pp;
694:
695: pp = h->base_man;
1.61 kristaps 696:
697: /* LINTED */
698: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 699: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 700: switch (*(p + 1)) {
701: case('S'):
1.58 kristaps 702: bufcat(h, sec ? sec : "1");
1.55 kristaps 703: break;
704: case('N'):
1.58 kristaps 705: buffmt(h, name);
1.55 kristaps 706: break;
707: default:
708: bufncat(h, p, 2);
709: break;
710: }
711: pp = p + 2;
712: }
713: if (pp)
714: bufcat(h, pp);
715: }
1.58 kristaps 716:
717:
718: void
719: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
720: {
1.62 kristaps 721: double v;
1.63 kristaps 722: const char *u;
1.58 kristaps 723:
724: v = su->scale;
725:
726: switch (su->unit) {
727: case (SCALE_CM):
728: u = "cm";
729: break;
730: case (SCALE_IN):
731: u = "in";
732: break;
733: case (SCALE_PC):
734: u = "pc";
735: break;
736: case (SCALE_PT):
737: u = "pt";
738: break;
1.59 kristaps 739: case (SCALE_EM):
740: u = "em";
741: break;
1.58 kristaps 742: case (SCALE_MM):
743: if (0 == (v /= 100))
744: v = 1;
745: u = "em";
746: break;
1.59 kristaps 747: case (SCALE_EN):
748: u = "ex";
749: break;
750: case (SCALE_BU):
751: u = "ex";
752: break;
1.58 kristaps 753: case (SCALE_VS):
754: u = "em";
755: break;
756: default:
757: u = "ex";
758: break;
759: }
760:
1.103 kristaps 761: /*
762: * XXX: the CSS spec isn't clear as to which types accept
763: * integer or real numbers, so we just make them all decimals.
764: */
765: buffmt(h, "%s: %.2f%s;", p, v, u);
1.58 kristaps 766: }
1.65 kristaps 767:
1.68 kristaps 768:
769: void
1.70 kristaps 770: html_idcat(char *dst, const char *src, int sz)
1.68 kristaps 771: {
1.70 kristaps 772: int ssz;
1.68 kristaps 773:
774: assert(sz);
775:
776: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
777:
1.70 kristaps 778: for ( ; *dst != '\0' && sz; dst++, sz--)
1.68 kristaps 779: /* Jump to end. */ ;
780:
1.70 kristaps 781: assert(sz > 2);
1.68 kristaps 782:
1.70 kristaps 783: /* We can't start with a number (bah). */
1.68 kristaps 784:
1.70 kristaps 785: *dst++ = 'x';
1.68 kristaps 786: *dst = '\0';
1.70 kristaps 787: sz--;
788:
789: for ( ; *src != '\0' && sz > 1; src++) {
1.73 kristaps 790: ssz = snprintf(dst, (size_t)sz, "%.2x", *src);
1.70 kristaps 791: sz -= ssz;
792: dst += ssz;
793: }
1.68 kristaps 794: }
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