Annotation of mandoc/html.c, Revision 1.150
1.150 ! kristaps 1: /* $Id: html.c,v 1.149 2011/07/07 14:34:11 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;
1.150 ! kristaps 121: const char *toks[5];
1.63 kristaps 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";
1.150 ! kristaps 127: toks[3] = "fragment";
! 128: toks[4] = NULL;
1.30 kristaps 129:
1.128 kristaps 130: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 131:
1.93 kristaps 132: h->type = type;
1.66 kristaps 133: h->tags.head = NULL;
1.136 kristaps 134: h->symtab = mchars_alloc();
1.41 kristaps 135:
1.47 kristaps 136: while (outopts && *outopts)
1.63 kristaps 137: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.43 kristaps 138: case (0):
139: h->style = v;
140: break;
141: case (1):
1.53 kristaps 142: h->base_man = v;
1.43 kristaps 143: break;
1.54 kristaps 144: case (2):
145: h->base_includes = v;
1.150 ! kristaps 146: break;
! 147: case (3):
! 148: h->oflags |= HTML_FRAGMENT;
1.54 kristaps 149: break;
1.43 kristaps 150: default:
151: break;
152: }
153:
1.30 kristaps 154: return(h);
1.29 kristaps 155: }
1.10 kristaps 156:
1.93 kristaps 157: void *
158: html_alloc(char *outopts)
159: {
160:
161: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
162: }
163:
164:
165: void *
166: xhtml_alloc(char *outopts)
167: {
168:
169: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
170: }
171:
1.33 kristaps 172:
1.29 kristaps 173: void
174: html_free(void *p)
175: {
1.30 kristaps 176: struct tag *tag;
177: struct html *h;
178:
179: h = (struct html *)p;
1.37 kristaps 180:
1.66 kristaps 181: while ((tag = h->tags.head) != NULL) {
182: h->tags.head = tag->next;
1.30 kristaps 183: free(tag);
184: }
1.36 kristaps 185:
186: if (h->symtab)
1.133 kristaps 187: mchars_free(h->symtab);
1.53 kristaps 188:
1.30 kristaps 189: free(h);
1.10 kristaps 190: }
1.2 kristaps 191:
1.33 kristaps 192:
1.51 kristaps 193: void
1.29 kristaps 194: print_gen_head(struct html *h)
195: {
1.41 kristaps 196: struct htmlpair tag[4];
197:
198: tag[0].key = ATTR_HTTPEQUIV;
199: tag[0].val = "Content-Type";
200: tag[1].key = ATTR_CONTENT;
201: tag[1].val = "text/html; charset=utf-8";
202: print_otag(h, TAG_META, 2, tag);
203:
204: tag[0].key = ATTR_NAME;
205: tag[0].val = "resource-type";
206: tag[1].key = ATTR_CONTENT;
207: tag[1].val = "document";
208: print_otag(h, TAG_META, 2, tag);
209:
210: if (h->style) {
211: tag[0].key = ATTR_REL;
212: tag[0].val = "stylesheet";
213: tag[1].key = ATTR_HREF;
214: tag[1].val = h->style;
215: tag[2].key = ATTR_TYPE;
216: tag[2].val = "text/css";
217: tag[3].key = ATTR_MEDIA;
218: tag[3].val = "all";
219: print_otag(h, TAG_LINK, 4, tag);
220: }
1.4 kristaps 221: }
222:
1.126 schwarze 223: static void
1.132 kristaps 224: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 225: {
1.90 kristaps 226: enum htmlfont font;
1.88 kristaps 227:
228: switch (deco) {
1.132 kristaps 229: case (ESCAPE_FONTPREV):
1.90 kristaps 230: font = h->metal;
1.88 kristaps 231: break;
1.132 kristaps 232: case (ESCAPE_FONTITALIC):
1.90 kristaps 233: font = HTMLFONT_ITALIC;
234: break;
1.132 kristaps 235: case (ESCAPE_FONTBOLD):
1.90 kristaps 236: font = HTMLFONT_BOLD;
1.88 kristaps 237: break;
1.145 kristaps 238: case (ESCAPE_FONT):
239: /* FALLTHROUGH */
1.132 kristaps 240: case (ESCAPE_FONTROMAN):
1.90 kristaps 241: font = HTMLFONT_NONE;
1.88 kristaps 242: break;
243: default:
244: abort();
245: /* NOTREACHED */
246: }
247:
1.122 kristaps 248: if (h->metaf) {
249: print_tagq(h, h->metaf);
250: h->metaf = NULL;
251: }
252:
253: h->metal = h->metac;
254: h->metac = font;
255:
256: if (HTMLFONT_NONE != font)
257: h->metaf = HTMLFONT_BOLD == font ?
258: print_otag(h, TAG_B, 0, NULL) :
259: print_otag(h, TAG_I, 0, NULL);
1.88 kristaps 260: }
261:
1.138 kristaps 262: int
263: html_strlen(const char *cp)
264: {
265: int ssz, sz;
266: const char *seq, *p;
267:
268: /*
269: * Account for escaped sequences within string length
270: * calculations. This follows the logic in term_strlen() as we
271: * must calculate the width of produced strings.
272: * Assume that characters are always width of "1". This is
273: * hacky, but it gets the job done for approximation of widths.
274: */
275:
276: sz = 0;
277: while (NULL != (p = strchr(cp, '\\'))) {
278: sz += (int)(p - cp);
279: ++cp;
280: switch (mandoc_escape(&cp, &seq, &ssz)) {
281: case (ESCAPE_ERROR):
282: return(sz);
1.144 kristaps 283: case (ESCAPE_UNICODE):
284: /* FALLTHROUGH */
1.139 kristaps 285: case (ESCAPE_NUMBERED):
286: /* FALLTHROUGH */
1.138 kristaps 287: case (ESCAPE_SPECIAL):
288: sz++;
289: break;
290: default:
291: break;
292: }
293: }
294:
295: assert(sz >= 0);
296: return(sz + strlen(cp));
297: }
1.88 kristaps 298:
1.85 kristaps 299: static int
1.88 kristaps 300: print_encode(struct html *h, const char *p, int norecurse)
1.29 kristaps 301: {
1.77 kristaps 302: size_t sz;
1.141 kristaps 303: int c, len, nospace;
1.82 kristaps 304: const char *seq;
1.132 kristaps 305: enum mandoc_esc esc;
1.100 kristaps 306: static const char rejs[6] = { '\\', '<', '>', '&', ASCII_HYPH, '\0' };
1.14 kristaps 307:
1.85 kristaps 308: nospace = 0;
309:
1.132 kristaps 310: while ('\0' != *p) {
1.100 kristaps 311: sz = strcspn(p, rejs);
1.77 kristaps 312:
313: fwrite(p, 1, sz, stdout);
1.132 kristaps 314: p += (int)sz;
1.77 kristaps 315:
1.132 kristaps 316: if ('\0' == *p)
317: break;
318:
319: switch (*p++) {
320: case ('<'):
1.82 kristaps 321: printf("<");
322: continue;
1.132 kristaps 323: case ('>'):
1.82 kristaps 324: printf(">");
325: continue;
1.132 kristaps 326: case ('&'):
1.82 kristaps 327: printf("&");
1.34 kristaps 328: continue;
1.132 kristaps 329: case (ASCII_HYPH):
1.100 kristaps 330: putchar('-');
331: continue;
1.132 kristaps 332: default:
1.77 kristaps 333: break;
1.132 kristaps 334: }
1.77 kristaps 335:
1.132 kristaps 336: esc = mandoc_escape(&p, &seq, &len);
337: if (ESCAPE_ERROR == esc)
338: break;
1.82 kristaps 339:
1.132 kristaps 340: switch (esc) {
1.144 kristaps 341: case (ESCAPE_UNICODE):
342: /* Skip passed "u" header. */
343: c = mchars_num2uc(seq + 1, len - 1);
344: if ('\0' != c)
345: printf("&#x%x;", c);
346: break;
1.132 kristaps 347: case (ESCAPE_NUMBERED):
1.141 kristaps 348: c = mchars_num2char(seq, len);
349: if ('\0' != c)
350: putchar(c);
1.82 kristaps 351: break;
1.132 kristaps 352: case (ESCAPE_SPECIAL):
1.147 kristaps 353: c = mchars_spec2cp(h->symtab, seq, len);
354: if (c > 0)
355: printf("&#%d;", c);
356: else if (-1 == c && 1 == len)
357: putchar((int)*seq);
1.82 kristaps 358: break;
1.145 kristaps 359: case (ESCAPE_FONT):
360: /* FALLTHROUGH */
1.132 kristaps 361: case (ESCAPE_FONTPREV):
1.90 kristaps 362: /* FALLTHROUGH */
1.132 kristaps 363: case (ESCAPE_FONTBOLD):
1.88 kristaps 364: /* FALLTHROUGH */
1.132 kristaps 365: case (ESCAPE_FONTITALIC):
1.88 kristaps 366: /* FALLTHROUGH */
1.132 kristaps 367: case (ESCAPE_FONTROMAN):
1.88 kristaps 368: if (norecurse)
369: break;
1.132 kristaps 370: print_metaf(h, esc);
371: break;
372: case (ESCAPE_NOSPACE):
373: if ('\0' == *p)
374: nospace = 1;
1.88 kristaps 375: break;
1.82 kristaps 376: default:
377: break;
378: }
1.32 kristaps 379: }
1.85 kristaps 380:
381: return(nospace);
1.14 kristaps 382: }
383:
384:
1.94 kristaps 385: static void
386: print_attr(struct html *h, const char *key, const char *val)
387: {
388: printf(" %s=\"", key);
389: (void)print_encode(h, val, 1);
390: putchar('\"');
391: }
392:
393:
1.51 kristaps 394: struct tag *
1.29 kristaps 395: print_otag(struct html *h, enum htmltag tag,
396: int sz, const struct htmlpair *p)
1.14 kristaps 397: {
1.29 kristaps 398: int i;
1.30 kristaps 399: struct tag *t;
400:
1.94 kristaps 401: /* Push this tags onto the stack of open scopes. */
402:
1.30 kristaps 403: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.128 kristaps 404: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 405: t->tag = tag;
1.66 kristaps 406: t->next = h->tags.head;
407: h->tags.head = t;
1.30 kristaps 408: } else
409: t = NULL;
1.29 kristaps 410:
411: if ( ! (HTML_NOSPACE & h->flags))
1.105 kristaps 412: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
413: /* Manage keeps! */
414: if ( ! (HTML_KEEP & h->flags)) {
415: if (HTML_PREKEEP & h->flags)
416: h->flags |= HTML_KEEP;
417: putchar(' ');
418: } else
419: printf(" ");
420: }
1.29 kristaps 421:
1.109 kristaps 422: if ( ! (h->flags & HTML_NONOSPACE))
423: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 424: else
425: h->flags |= HTML_NOSPACE;
1.109 kristaps 426:
1.94 kristaps 427: /* Print out the tag name and attributes. */
428:
1.29 kristaps 429: printf("<%s", htmltags[tag].name);
1.94 kristaps 430: for (i = 0; i < sz; i++)
431: print_attr(h, htmlattrs[p[i].key], p[i].val);
432:
433: /* Add non-overridable attributes. */
434:
435: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
436: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
437: print_attr(h, "xml:lang", "en");
438: print_attr(h, "lang", "en");
1.29 kristaps 439: }
1.93 kristaps 440:
1.134 kristaps 441: /* Accommodate for XML "well-formed" singleton escaping. */
1.94 kristaps 442:
1.93 kristaps 443: if (HTML_AUTOCLOSE & htmltags[tag].flags)
444: switch (h->type) {
445: case (HTML_XHTML_1_0_STRICT):
446: putchar('/');
447: break;
448: default:
449: break;
450: }
451:
1.78 kristaps 452: putchar('>');
1.14 kristaps 453:
1.29 kristaps 454: h->flags |= HTML_NOSPACE;
1.117 kristaps 455:
456: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
457: putchar('\n');
458:
1.30 kristaps 459: return(t);
1.14 kristaps 460: }
461:
462:
1.29 kristaps 463: static void
464: print_ctag(struct html *h, enum htmltag tag)
1.14 kristaps 465: {
466:
1.29 kristaps 467: printf("</%s>", htmltags[tag].name);
1.71 kristaps 468: if (HTML_CLRLINE & htmltags[tag].flags) {
1.29 kristaps 469: h->flags |= HTML_NOSPACE;
1.78 kristaps 470: putchar('\n');
1.87 kristaps 471: }
1.14 kristaps 472: }
473:
1.51 kristaps 474: void
1.93 kristaps 475: print_gen_decls(struct html *h)
1.1 kristaps 476: {
1.93 kristaps 477: const char *doctype;
478: const char *dtd;
1.96 kristaps 479: const char *name;
1.93 kristaps 480:
481: switch (h->type) {
482: case (HTML_HTML_4_01_STRICT):
1.96 kristaps 483: name = "HTML";
1.93 kristaps 484: doctype = "-//W3C//DTD HTML 4.01//EN";
485: dtd = "http://www.w3.org/TR/html4/strict.dtd";
486: break;
487: default:
1.141 kristaps 488: puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.96 kristaps 489: name = "html";
1.93 kristaps 490: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
491: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
492: break;
493: }
494:
1.96 kristaps 495: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
496: name, doctype, dtd);
1.1 kristaps 497: }
498:
1.51 kristaps 499: void
1.104 kristaps 500: print_text(struct html *h, const char *word)
1.1 kristaps 501: {
502:
1.105 kristaps 503: if ( ! (HTML_NOSPACE & h->flags)) {
504: /* Manage keeps! */
505: if ( ! (HTML_KEEP & h->flags)) {
506: if (HTML_PREKEEP & h->flags)
507: h->flags |= HTML_KEEP;
508: putchar(' ');
509: } else
510: printf(" ");
511: }
1.30 kristaps 512:
1.122 kristaps 513: assert(NULL == h->metaf);
514: if (HTMLFONT_NONE != h->metac)
515: h->metaf = HTMLFONT_BOLD == h->metac ?
516: print_otag(h, TAG_B, 0, NULL) :
517: print_otag(h, TAG_I, 0, NULL);
518:
1.104 kristaps 519: assert(word);
1.149 kristaps 520: if ( ! print_encode(h, word, 0)) {
1.109 kristaps 521: if ( ! (h->flags & HTML_NONOSPACE))
522: h->flags &= ~HTML_NOSPACE;
1.149 kristaps 523: } else
524: h->flags |= HTML_NOSPACE;
1.122 kristaps 525:
526: if (h->metaf) {
527: print_tagq(h, h->metaf);
528: h->metaf = NULL;
529: }
1.113 schwarze 530:
531: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 532: }
1.30 kristaps 533:
534:
1.51 kristaps 535: void
1.30 kristaps 536: print_tagq(struct html *h, const struct tag *until)
537: {
538: struct tag *tag;
539:
1.66 kristaps 540: while ((tag = h->tags.head) != NULL) {
1.125 kristaps 541: /*
542: * Remember to close out and nullify the current
543: * meta-font and table, if applicable.
544: */
1.89 kristaps 545: if (tag == h->metaf)
546: h->metaf = NULL;
1.125 kristaps 547: if (tag == h->tblt)
548: h->tblt = NULL;
1.30 kristaps 549: print_ctag(h, tag->tag);
1.66 kristaps 550: h->tags.head = tag->next;
1.30 kristaps 551: free(tag);
552: if (until && tag == until)
553: return;
554: }
555: }
556:
557:
1.51 kristaps 558: void
1.30 kristaps 559: print_stagq(struct html *h, const struct tag *suntil)
560: {
561: struct tag *tag;
562:
1.66 kristaps 563: while ((tag = h->tags.head) != NULL) {
1.30 kristaps 564: if (suntil && tag == suntil)
565: return;
1.125 kristaps 566: /*
567: * Remember to close out and nullify the current
568: * meta-font and table, if applicable.
569: */
1.89 kristaps 570: if (tag == h->metaf)
571: h->metaf = NULL;
1.125 kristaps 572: if (tag == h->tblt)
573: h->tblt = NULL;
1.30 kristaps 574: print_ctag(h, tag->tag);
1.66 kristaps 575: h->tags.head = tag->next;
1.30 kristaps 576: free(tag);
577: }
578: }
1.55 kristaps 579:
580: void
581: bufinit(struct html *h)
582: {
583:
584: h->buf[0] = '\0';
585: h->buflen = 0;
586: }
587:
588: void
1.58 kristaps 589: bufcat_style(struct html *h, const char *key, const char *val)
590: {
591:
592: bufcat(h, key);
1.141 kristaps 593: bufcat(h, ":");
1.58 kristaps 594: bufcat(h, val);
1.141 kristaps 595: bufcat(h, ";");
1.58 kristaps 596: }
597:
598: void
1.55 kristaps 599: bufcat(struct html *h, const char *p)
600: {
601:
1.141 kristaps 602: h->buflen = strlcat(h->buf, p, BUFSIZ);
603: assert(h->buflen < BUFSIZ);
1.55 kristaps 604: }
605:
606: void
1.141 kristaps 607: bufcat_fmt(struct html *h, const char *fmt, ...)
1.55 kristaps 608: {
609: va_list ap;
610:
611: va_start(ap, fmt);
1.56 kristaps 612: (void)vsnprintf(h->buf + (int)h->buflen,
1.55 kristaps 613: BUFSIZ - h->buflen - 1, fmt, ap);
614: va_end(ap);
615: h->buflen = strlen(h->buf);
616: }
617:
1.141 kristaps 618: static void
1.55 kristaps 619: bufncat(struct html *h, const char *p, size_t sz)
620: {
621:
1.141 kristaps 622: assert(h->buflen + sz + 1 < BUFSIZ);
623: strncat(h->buf, p, sz);
1.55 kristaps 624: h->buflen += sz;
625: }
626:
627: void
628: buffmt_includes(struct html *h, const char *name)
629: {
630: const char *p, *pp;
631:
632: pp = h->base_includes;
1.61 kristaps 633:
1.143 kristaps 634: bufinit(h);
1.61 kristaps 635: while (NULL != (p = strchr(pp, '%'))) {
1.56 kristaps 636: bufncat(h, pp, (size_t)(p - pp));
1.55 kristaps 637: switch (*(p + 1)) {
638: case('I'):
639: bufcat(h, name);
640: break;
641: default:
642: bufncat(h, p, 2);
643: break;
644: }
645: pp = p + 2;
646: }
647: if (pp)
648: bufcat(h, pp);
649: }
650:
651: void
652: buffmt_man(struct html *h,
653: const char *name, const char *sec)
654: {
655: const char *p, *pp;
656:
657: pp = h->base_man;
1.61 kristaps 658:
1.143 kristaps 659: bufinit(h);
1.61 kristaps 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('S'):
1.58 kristaps 664: bufcat(h, sec ? sec : "1");
1.55 kristaps 665: break;
666: case('N'):
1.141 kristaps 667: bufcat_fmt(h, name);
1.55 kristaps 668: break;
669: default:
670: bufncat(h, p, 2);
671: break;
672: }
673: pp = p + 2;
674: }
675: if (pp)
676: bufcat(h, pp);
677: }
1.58 kristaps 678:
679: void
680: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
681: {
1.62 kristaps 682: double v;
1.58 kristaps 683:
684: v = su->scale;
1.140 kristaps 685: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
686: v = 1.0;
1.58 kristaps 687:
1.141 kristaps 688: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.58 kristaps 689: }
1.68 kristaps 690:
691: void
1.142 kristaps 692: bufcat_id(struct html *h, const char *src)
1.68 kristaps 693: {
694:
695: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
696:
1.142 kristaps 697: while ('\0' != *src)
698: bufcat_fmt(h, "%.2x", *src++);
1.68 kristaps 699: }
CVSweb