Annotation of mandoc/html.c, Revision 1.147
1.147 ! kristaps 1: /* $Id: html.c,v 1.146 2011/05/24 21:31:23 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"
1.138 kristaps 34: #include "libmandoc.h"
1.58 kristaps 35: #include "out.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:
1.140 kristaps 97: static const char *const roffscales[SCALE_MAX] = {
98: "cm", /* SCALE_CM */
99: "in", /* SCALE_IN */
100: "pc", /* SCALE_PC */
101: "pt", /* SCALE_PT */
102: "em", /* SCALE_EM */
103: "em", /* SCALE_MM */
104: "ex", /* SCALE_EN */
105: "ex", /* SCALE_BU */
106: "em", /* SCALE_VS */
107: "ex", /* SCALE_FS */
108: };
109:
1.141 kristaps 110: static void bufncat(struct html *, const char *, size_t);
111: static void print_ctag(struct html *, enum htmltag);
112: static int print_encode(struct html *, const char *, int);
113: static void print_metaf(struct html *, enum mandoc_esc);
114: static void print_attr(struct html *, const char *, const char *);
115: static void *ml_alloc(char *, enum htmltype);
1.82 kristaps 116:
1.93 kristaps 117: static void *
118: ml_alloc(char *outopts, enum htmltype type)
1.10 kristaps 119: {
1.30 kristaps 120: struct html *h;
1.63 kristaps 121: const char *toks[4];
122: char *v;
1.43 kristaps 123:
124: toks[0] = "style";
1.53 kristaps 125: toks[1] = "man";
1.54 kristaps 126: toks[2] = "includes";
127: toks[3] = NULL;
1.30 kristaps 128:
1.128 kristaps 129: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 130:
1.93 kristaps 131: h->type = type;
1.66 kristaps 132: h->tags.head = NULL;
1.136 kristaps 133: h->symtab = mchars_alloc();
1.41 kristaps 134:
1.47 kristaps 135: while (outopts && *outopts)
1.63 kristaps 136: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 137: case (0):
138: h->style = v;
139: break;
140: case (1):
1.53 kristaps 141: h->base_man = v;
1.43 kristaps 142: break;
1.54 kristaps 143: case (2):
144: h->base_includes = v;
145: break;
1.43 kristaps 146: default:
147: break;
148: }
149:
1.30 kristaps 150: return(h);
1.29 kristaps 151: }
1.10 kristaps 152:
1.93 kristaps 153: void *
154: html_alloc(char *outopts)
155: {
156:
157: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
158: }
159:
160:
161: void *
162: xhtml_alloc(char *outopts)
163: {
164:
165: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
166: }
167:
1.33 kristaps 168:
1.29 kristaps 169: void
170: html_free(void *p)
171: {
1.30 kristaps 172: struct tag *tag;
173: struct html *h;
174:
175: h = (struct html *)p;
1.37 kristaps 176:
1.66 kristaps 177: while ((tag = h->tags.head) != NULL) {
178: h->tags.head = tag->next;
1.30 kristaps 179: free(tag);
180: }
1.36 kristaps 181:
182: if (h->symtab)
1.133 kristaps 183: mchars_free(h->symtab);
1.53 kristaps 184:
1.30 kristaps 185: free(h);
1.10 kristaps 186: }
1.2 kristaps 187:
1.33 kristaps 188:
1.51 kristaps 189: void
1.29 kristaps 190: print_gen_head(struct html *h)
191: {
1.41 kristaps 192: struct htmlpair tag[4];
193:
194: tag[0].key = ATTR_HTTPEQUIV;
195: tag[0].val = "Content-Type";
196: tag[1].key = ATTR_CONTENT;
197: tag[1].val = "text/html; charset=utf-8";
198: print_otag(h, TAG_META, 2, tag);
199:
200: tag[0].key = ATTR_NAME;
201: tag[0].val = "resource-type";
202: tag[1].key = ATTR_CONTENT;
203: tag[1].val = "document";
204: print_otag(h, TAG_META, 2, tag);
205:
206: if (h->style) {
207: tag[0].key = ATTR_REL;
208: tag[0].val = "stylesheet";
209: tag[1].key = ATTR_HREF;
210: tag[1].val = h->style;
211: tag[2].key = ATTR_TYPE;
212: tag[2].val = "text/css";
213: tag[3].key = ATTR_MEDIA;
214: tag[3].val = "all";
215: print_otag(h, TAG_LINK, 4, tag);
216: }
1.4 kristaps 217: }
218:
1.126 schwarze 219: static void
1.132 kristaps 220: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 221: {
1.90 kristaps 222: enum htmlfont font;
1.88 kristaps 223:
224: switch (deco) {
1.132 kristaps 225: case (ESCAPE_FONTPREV):
1.90 kristaps 226: font = h->metal;
1.88 kristaps 227: break;
1.132 kristaps 228: case (ESCAPE_FONTITALIC):
1.90 kristaps 229: font = HTMLFONT_ITALIC;
230: break;
1.132 kristaps 231: case (ESCAPE_FONTBOLD):
1.90 kristaps 232: font = HTMLFONT_BOLD;
1.88 kristaps 233: break;
1.145 kristaps 234: case (ESCAPE_FONT):
235: /* FALLTHROUGH */
1.132 kristaps 236: case (ESCAPE_FONTROMAN):
1.90 kristaps 237: font = HTMLFONT_NONE;
1.88 kristaps 238: break;
239: default:
240: abort();
241: /* NOTREACHED */
242: }
243:
1.122 kristaps 244: if (h->metaf) {
245: print_tagq(h, h->metaf);
246: h->metaf = NULL;
247: }
248:
249: h->metal = h->metac;
250: h->metac = font;
251:
252: if (HTMLFONT_NONE != font)
253: h->metaf = HTMLFONT_BOLD == font ?
254: print_otag(h, TAG_B, 0, NULL) :
255: print_otag(h, TAG_I, 0, NULL);
1.88 kristaps 256: }
257:
1.138 kristaps 258: int
259: html_strlen(const char *cp)
260: {
261: int ssz, sz;
262: const char *seq, *p;
263:
264: /*
265: * Account for escaped sequences within string length
266: * calculations. This follows the logic in term_strlen() as we
267: * must calculate the width of produced strings.
268: * Assume that characters are always width of "1". This is
269: * hacky, but it gets the job done for approximation of widths.
270: */
271:
272: sz = 0;
273: while (NULL != (p = strchr(cp, '\\'))) {
274: sz += (int)(p - cp);
275: ++cp;
276: switch (mandoc_escape(&cp, &seq, &ssz)) {
277: case (ESCAPE_ERROR):
278: return(sz);
1.144 kristaps 279: case (ESCAPE_UNICODE):
280: /* FALLTHROUGH */
1.139 kristaps 281: case (ESCAPE_NUMBERED):
282: /* FALLTHROUGH */
1.138 kristaps 283: case (ESCAPE_SPECIAL):
284: sz++;
285: break;
286: default:
287: break;
288: }
289: }
290:
291: assert(sz >= 0);
292: return(sz + strlen(cp));
293: }
1.88 kristaps 294:
1.85 kristaps 295: static int
1.88 kristaps 296: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 297: {
1.77 kristaps 298: size_t sz;
1.141 kristaps 299: int c, len, nospace;
1.82 kristaps 300: const char *seq;
1.132 kristaps 301: enum mandoc_esc esc;
1.100 kristaps 302: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 303:
1.85 kristaps 304: nospace = 0;
305:
1.132 kristaps 306: while ('\0' != *p) {
1.100 kristaps 307: sz = strcspn(p, rejs);
1.77 kristaps 308:
309: fwrite(p, 1, sz, stdout);
1.132 kristaps 310: p += (int)sz;
1.77 kristaps 311:
1.132 kristaps 312: if ('\0' == *p)
313: break;
314:
315: switch (*p++) {
316: case ('<'):
1.82 kristaps 317: printf("<");
318: continue;
1.132 kristaps 319: case ('>'):
1.82 kristaps 320: printf(">");
321: continue;
1.132 kristaps 322: case ('&'):
1.82 kristaps 323: printf("&");
1.34 kristaps 324: continue;
1.132 kristaps 325: case (ASCII_HYPH):
1.100 kristaps 326: putchar('-');
327: continue;
1.132 kristaps 328: default:
1.77 kristaps 329: break;
1.132 kristaps 330: }
1.77 kristaps 331:
1.132 kristaps 332: esc = mandoc_escape(&p, &seq, &len);
333: if (ESCAPE_ERROR == esc)
334: break;
1.82 kristaps 335:
1.132 kristaps 336: switch (esc) {
1.144 kristaps 337: case (ESCAPE_UNICODE):
338: /* Skip passed "u" header. */
339: c = mchars_num2uc(seq + 1, len - 1);
340: if ('\0' != c)
341: printf("&#x%x;", c);
342: break;
1.132 kristaps 343: case (ESCAPE_NUMBERED):
1.141 kristaps 344: c = mchars_num2char(seq, len);
345: if ('\0' != c)
346: putchar(c);
1.82 kristaps 347: break;
1.132 kristaps 348: case (ESCAPE_SPECIAL):
1.147 ! kristaps 349: c = mchars_spec2cp(h->symtab, seq, len);
! 350: if (c > 0)
! 351: printf("&#%d;", c);
! 352: else if (-1 == c && 1 == len)
! 353: putchar((int)*seq);
1.82 kristaps 354: break;
1.145 kristaps 355: case (ESCAPE_FONT):
356: /* FALLTHROUGH */
1.132 kristaps 357: case (ESCAPE_FONTPREV):
1.90 kristaps 358: /* FALLTHROUGH */
1.132 kristaps 359: case (ESCAPE_FONTBOLD):
1.88 kristaps 360: /* FALLTHROUGH */
1.132 kristaps 361: case (ESCAPE_FONTITALIC):
1.88 kristaps 362: /* FALLTHROUGH */
1.132 kristaps 363: case (ESCAPE_FONTROMAN):
1.88 kristaps 364: if (norecurse)
365: break;
1.132 kristaps 366: print_metaf(h, esc);
367: break;
368: case (ESCAPE_NOSPACE):
369: if ('\0' == *p)
370: nospace = 1;
1.88 kristaps 371: break;
1.82 kristaps 372: default:
373: break;
374: }
1.32 kristaps 375: }
1.85 kristaps 376:
377: return(nospace);
1.14 kristaps 378: }
379:
380:
1.94 kristaps 381: static void
382: print_attr(struct html *h, const char *key, const char *val)
383: {
384: printf(" %s=\"", key);
385: (void)print_encode(h, val, 1);
386: putchar('\"');
387: }
388:
389:
1.51 kristaps 390: struct tag *
1.29 kristaps 391: print_otag(struct html *h, enum htmltag tag,
392: int sz, const struct htmlpair *p)
1.14 kristaps 393: {
1.29 kristaps 394: int i;
1.30 kristaps 395: struct tag *t;
396:
1.94 kristaps 397: /* Push this tags onto the stack of open scopes. */
398:
1.30 kristaps 399: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.128 kristaps 400: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 401: t->tag = tag;
1.66 kristaps 402: t->next = h->tags.head;
403: h->tags.head = t;
1.30 kristaps 404: } else
405: t = NULL;
1.29 kristaps 406:
407: if ( ! (HTML_NOSPACE & h->flags))
1.105 kristaps 408: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
409: /* Manage keeps! */
410: if ( ! (HTML_KEEP & h->flags)) {
411: if (HTML_PREKEEP & h->flags)
412: h->flags |= HTML_KEEP;
413: putchar(' ');
414: } else
415: printf(" ");
416: }
1.29 kristaps 417:
1.109 kristaps 418: if ( ! (h->flags & HTML_NONOSPACE))
419: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 420: else
421: h->flags |= HTML_NOSPACE;
1.109 kristaps 422:
1.94 kristaps 423: /* Print out the tag name and attributes. */
424:
1.29 kristaps 425: printf("<%s", htmltags[tag].name);
1.94 kristaps 426: for (i = 0; i < sz; i++)
427: print_attr(h, htmlattrs[p[i].key], p[i].val);
428:
429: /* Add non-overridable attributes. */
430:
431: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
432: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
433: print_attr(h, "xml:lang", "en");
434: print_attr(h, "lang", "en");
1.29 kristaps 435: }
1.93 kristaps 436:
1.134 kristaps 437: /* Accommodate for XML "well-formed" singleton escaping. */
1.94 kristaps 438:
1.93 kristaps 439: if (HTML_AUTOCLOSE & htmltags[tag].flags)
440: switch (h->type) {
441: case (HTML_XHTML_1_0_STRICT):
442: putchar('/');
443: break;
444: default:
445: break;
446: }
447:
1.78 kristaps 448: putchar('>');
1.14 kristaps 449:
1.29 kristaps 450: h->flags |= HTML_NOSPACE;
1.117 kristaps 451:
452: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
453: putchar('\n');
454:
1.30 kristaps 455: return(t);
1.14 kristaps 456: }
457:
458:
1.29 kristaps 459: static void
460: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 461: {
462:
1.29 kristaps 463: printf("</%s>", htmltags[tag].name);
1.71 kristaps 464: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 465: h->flags |= HTML_NOSPACE;
1.78 kristaps 466: putchar('\n');
1.87 kristaps 467: }
1.14 kristaps 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: const char *doctype;
474: const char *dtd;
1.96 kristaps 475: const char *name;
1.93 kristaps 476:
477: switch (h->type) {
478: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 479: name = "HTML";
1.93 kristaps 480: doctype = "-//W3C//DTD HTML 4.01//EN";
481: dtd = "http://www.w3.org/TR/html4/strict.dtd";
482: break;
483: default:
1.141 kristaps 484: puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.96 kristaps 485: name = "html";
1.93 kristaps 486: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
487: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
488: break;
489: }
490:
1.96 kristaps 491: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
492: name, doctype, dtd);
1.1 kristaps 493: }
494:
1.51 kristaps 495: void
1.104 kristaps 496: print_text(struct html *h, const char *word)
1.1 kristaps 497: {
498:
1.105 kristaps 499: if ( ! (HTML_NOSPACE & h->flags)) {
500: /* Manage keeps! */
501: if ( ! (HTML_KEEP & h->flags)) {
502: if (HTML_PREKEEP & h->flags)
503: h->flags |= HTML_KEEP;
504: putchar(' ');
505: } else
506: printf(" ");
507: }
1.30 kristaps 508:
1.122 kristaps 509: assert(NULL == h->metaf);
510: if (HTMLFONT_NONE != h->metac)
511: h->metaf = HTMLFONT_BOLD == h->metac ?
512: print_otag(h, TAG_B, 0, NULL) :
513: print_otag(h, TAG_I, 0, NULL);
514:
1.104 kristaps 515: assert(word);
516: if ( ! print_encode(h, word, 0))
1.109 kristaps 517: if ( ! (h->flags & HTML_NONOSPACE))
518: h->flags &= ~HTML_NOSPACE;
1.122 kristaps 519:
520: if (h->metaf) {
521: print_tagq(h, h->metaf);
522: h->metaf = NULL;
523: }
1.113 schwarze 524:
525: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 526: }
1.30 kristaps 527:
528:
1.51 kristaps 529: void
1.30 kristaps 530: print_tagq(struct html *h, const struct tag *until)
531: {
532: struct tag *tag;
533:
1.66 kristaps 534: while ((tag = h->tags.head) != NULL) {
1.125 kristaps 535: /*
536: * Remember to close out and nullify the current
537: * meta-font and table, if applicable.
538: */
1.89 kristaps 539: if (tag == h->metaf)
540: h->metaf = NULL;
1.125 kristaps 541: if (tag == h->tblt)
542: h->tblt = NULL;
1.30 kristaps 543: print_ctag(h, tag->tag);
1.66 kristaps 544: h->tags.head = tag->next;
1.30 kristaps 545: free(tag);
546: if (until && tag == until)
547: return;
548: }
549: }
550:
551:
1.51 kristaps 552: void
1.30 kristaps 553: print_stagq(struct html *h, const struct tag *suntil)
554: {
555: struct tag *tag;
556:
1.66 kristaps 557: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 558: if (suntil && tag == suntil)
559: return;
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: }
572: }
1.55 kristaps 573:
574: void
575: bufinit(struct html *h)
576: {
577:
578: h->buf[0] = '\0';
579: h->buflen = 0;
580: }
581:
582: void
1.58 kristaps 583: bufcat_style(struct html *h, const char *key, const char *val)
584: {
585:
586: bufcat(h, key);
1.141 kristaps 587: bufcat(h, ":");
1.58 kristaps 588: bufcat(h, val);
1.141 kristaps 589: bufcat(h, ";");
1.58 kristaps 590: }
591:
592: void
1.55 kristaps 593: bufcat(struct html *h, const char *p)
594: {
595:
1.141 kristaps 596: h->buflen = strlcat(h->buf, p, BUFSIZ);
597: assert(h->buflen < BUFSIZ);
598: h->buflen--;
1.55 kristaps 599: }
600:
601: void
1.141 kristaps 602: bufcat_fmt(struct html *h, const char *fmt, ...)
1.55 kristaps 603: {
604: va_list ap;
605:
606: va_start(ap, fmt);
1.56 kristaps 607: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 608: BUFSIZ - h->buflen - 1, fmt, ap);
609: va_end(ap);
610: h->buflen = strlen(h->buf);
611: }
612:
1.141 kristaps 613: static void
1.55 kristaps 614: bufncat(struct html *h, const char *p, size_t sz)
615: {
616:
1.141 kristaps 617: assert(h->buflen + sz + 1 < BUFSIZ);
618: strncat(h->buf, p, sz);
1.55 kristaps 619: h->buflen += sz;
620: }
621:
622: void
623: buffmt_includes(struct html *h, const char *name)
624: {
625: const char *p, *pp;
626:
627: pp = h->base_includes;
1.61 kristaps 628:
1.143 kristaps 629: bufinit(h);
1.61 kristaps 630: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 631: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 632: switch (*(p + 1)) {
633: case('I'):
634: bufcat(h, name);
635: break;
636: default:
637: bufncat(h, p, 2);
638: break;
639: }
640: pp = p + 2;
641: }
642: if (pp)
643: bufcat(h, pp);
644: }
645:
646: void
647: buffmt_man(struct html *h,
648: const char *name, const char *sec)
649: {
650: const char *p, *pp;
651:
652: pp = h->base_man;
1.61 kristaps 653:
1.143 kristaps 654: bufinit(h);
1.61 kristaps 655: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 656: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 657: switch (*(p + 1)) {
658: case('S'):
1.58 kristaps 659: bufcat(h, sec ? sec : "1");
1.55 kristaps 660: break;
661: case('N'):
1.141 kristaps 662: bufcat_fmt(h, name);
1.55 kristaps 663: break;
664: default:
665: bufncat(h, p, 2);
666: break;
667: }
668: pp = p + 2;
669: }
670: if (pp)
671: bufcat(h, pp);
672: }
1.58 kristaps 673:
674: void
675: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
676: {
1.62 kristaps 677: double v;
1.58 kristaps 678:
679: v = su->scale;
1.140 kristaps 680: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
681: v = 1.0;
1.58 kristaps 682:
1.141 kristaps 683: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.58 kristaps 684: }
1.68 kristaps 685:
686: void
1.142 kristaps 687: bufcat_id(struct html *h, const char *src)
1.68 kristaps 688: {
689:
690: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
691:
1.142 kristaps 692: while ('\0' != *src)
693: bufcat_fmt(h, "%.2x", *src++);
1.68 kristaps 694: }
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