Annotation of src/usr.bin/mandoc/html.c, Revision 1.39
1.39 ! schwarze 1: /* $Id: html.c,v 1.38 2014/07/23 15:00:00 schwarze Exp $ */
1.1 schwarze 2: /*
1.22 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.33 schwarze 4: * Copyright (c) 2011, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
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.
17: */
18: #include <sys/types.h>
19:
20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.4 schwarze 22: #include <stdarg.h>
1.1 schwarze 23: #include <stdio.h>
24: #include <stdint.h>
25: #include <stdlib.h>
26: #include <string.h>
27: #include <unistd.h>
28:
1.9 schwarze 29: #include "mandoc.h"
1.34 schwarze 30: #include "mandoc_aux.h"
1.26 schwarze 31: #include "libmandoc.h"
1.1 schwarze 32: #include "out.h"
33: #include "html.h"
34: #include "main.h"
35:
36: struct htmldata {
37: const char *name;
38: int flags;
39: #define HTML_CLRLINE (1 << 0)
40: #define HTML_NOSTACK (1 << 1)
1.6 schwarze 41: #define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */
1.1 schwarze 42: };
43:
44: static const struct htmldata htmltags[TAG_MAX] = {
45: {"html", HTML_CLRLINE}, /* TAG_HTML */
46: {"head", HTML_CLRLINE}, /* TAG_HEAD */
47: {"body", HTML_CLRLINE}, /* TAG_BODY */
1.6 schwarze 48: {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */
1.1 schwarze 49: {"title", HTML_CLRLINE}, /* TAG_TITLE */
50: {"div", HTML_CLRLINE}, /* TAG_DIV */
51: {"h1", 0}, /* TAG_H1 */
52: {"h2", 0}, /* TAG_H2 */
53: {"span", 0}, /* TAG_SPAN */
1.8 schwarze 54: {"link", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */
1.6 schwarze 55: {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
1.1 schwarze 56: {"a", 0}, /* TAG_A */
57: {"table", HTML_CLRLINE}, /* TAG_TABLE */
1.18 schwarze 58: {"tbody", HTML_CLRLINE}, /* TAG_TBODY */
1.6 schwarze 59: {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
1.1 schwarze 60: {"tr", HTML_CLRLINE}, /* TAG_TR */
61: {"td", HTML_CLRLINE}, /* TAG_TD */
62: {"li", HTML_CLRLINE}, /* TAG_LI */
63: {"ul", HTML_CLRLINE}, /* TAG_UL */
64: {"ol", HTML_CLRLINE}, /* TAG_OL */
1.18 schwarze 65: {"dl", HTML_CLRLINE}, /* TAG_DL */
66: {"dt", HTML_CLRLINE}, /* TAG_DT */
67: {"dd", HTML_CLRLINE}, /* TAG_DD */
68: {"blockquote", HTML_CLRLINE}, /* TAG_BLOCKQUOTE */
69: {"p", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_P */
70: {"pre", HTML_CLRLINE }, /* TAG_PRE */
1.19 schwarze 71: {"b", 0 }, /* TAG_B */
72: {"i", 0 }, /* TAG_I */
1.20 schwarze 73: {"code", 0 }, /* TAG_CODE */
74: {"small", 0 }, /* TAG_SMALL */
1.39 ! schwarze 75: {"em", 0 }, /* TAG_EM */
1.5 schwarze 76: };
77:
78: static const char *const htmlattrs[ATTR_MAX] = {
1.19 schwarze 79: "http-equiv", /* ATTR_HTTPEQUIV */
80: "content", /* ATTR_CONTENT */
81: "name", /* ATTR_NAME */
82: "rel", /* ATTR_REL */
83: "href", /* ATTR_HREF */
84: "type", /* ATTR_TYPE */
85: "media", /* ATTR_MEDIA */
86: "class", /* ATTR_CLASS */
87: "style", /* ATTR_STYLE */
88: "width", /* ATTR_WIDTH */
89: "id", /* ATTR_ID */
90: "summary", /* ATTR_SUMMARY */
91: "align", /* ATTR_ALIGN */
1.22 schwarze 92: "colspan", /* ATTR_COLSPAN */
1.1 schwarze 93: };
94:
1.26 schwarze 95: static const char *const roffscales[SCALE_MAX] = {
96: "cm", /* SCALE_CM */
97: "in", /* SCALE_IN */
98: "pc", /* SCALE_PC */
99: "pt", /* SCALE_PT */
100: "em", /* SCALE_EM */
101: "em", /* SCALE_MM */
102: "ex", /* SCALE_EN */
103: "ex", /* SCALE_BU */
104: "em", /* SCALE_VS */
105: "ex", /* SCALE_FS */
106: };
1.5 schwarze 107:
1.26 schwarze 108: static void bufncat(struct html *, const char *, size_t);
109: static void print_ctag(struct html *, enum htmltag);
1.38 schwarze 110: static int print_escape(char);
1.26 schwarze 111: static int print_encode(struct html *, const char *, int);
112: static void print_metaf(struct html *, enum mandoc_esc);
113: static void print_attr(struct html *, const char *, const char *);
114: static void *ml_alloc(char *, enum htmltype);
1.5 schwarze 115:
1.35 schwarze 116:
1.6 schwarze 117: static void *
118: ml_alloc(char *outopts, enum htmltype type)
1.1 schwarze 119: {
120: struct html *h;
1.29 schwarze 121: const char *toks[5];
1.1 schwarze 122: char *v;
123:
124: toks[0] = "style";
125: toks[1] = "man";
126: toks[2] = "includes";
1.29 schwarze 127: toks[3] = "fragment";
128: toks[4] = NULL;
1.1 schwarze 129:
1.24 schwarze 130: h = mandoc_calloc(1, sizeof(struct html));
1.1 schwarze 131:
1.6 schwarze 132: h->type = type;
1.2 schwarze 133: h->tags.head = NULL;
1.26 schwarze 134: h->symtab = mchars_alloc();
1.1 schwarze 135:
136: while (outopts && *outopts)
137: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.35 schwarze 138: case 0:
1.1 schwarze 139: h->style = v;
140: break;
1.35 schwarze 141: case 1:
1.1 schwarze 142: h->base_man = v;
143: break;
1.35 schwarze 144: case 2:
1.1 schwarze 145: h->base_includes = v;
1.29 schwarze 146: break;
1.35 schwarze 147: case 3:
1.29 schwarze 148: h->oflags |= HTML_FRAGMENT;
1.1 schwarze 149: break;
150: default:
151: break;
152: }
153:
154: return(h);
155: }
156:
1.6 schwarze 157: void *
158: html_alloc(char *outopts)
159: {
160:
161: return(ml_alloc(outopts, HTML_HTML_4_01_STRICT));
162: }
163:
164: void *
165: xhtml_alloc(char *outopts)
166: {
167:
168: return(ml_alloc(outopts, HTML_XHTML_1_0_STRICT));
169: }
170:
1.1 schwarze 171: void
172: html_free(void *p)
173: {
174: struct tag *tag;
175: struct html *h;
176:
177: h = (struct html *)p;
178:
1.2 schwarze 179: while ((tag = h->tags.head) != NULL) {
1.35 schwarze 180: h->tags.head = tag->next;
1.1 schwarze 181: free(tag);
182: }
1.35 schwarze 183:
1.1 schwarze 184: if (h->symtab)
1.26 schwarze 185: mchars_free(h->symtab);
1.1 schwarze 186:
187: free(h);
188: }
189:
190: void
191: print_gen_head(struct html *h)
192: {
193: struct htmlpair tag[4];
194:
195: tag[0].key = ATTR_HTTPEQUIV;
196: tag[0].val = "Content-Type";
197: tag[1].key = ATTR_CONTENT;
198: tag[1].val = "text/html; charset=utf-8";
199: print_otag(h, TAG_META, 2, tag);
200:
201: tag[0].key = ATTR_NAME;
202: tag[0].val = "resource-type";
203: tag[1].key = ATTR_CONTENT;
204: tag[1].val = "document";
205: print_otag(h, TAG_META, 2, tag);
206:
207: if (h->style) {
208: tag[0].key = ATTR_REL;
209: tag[0].val = "stylesheet";
210: tag[1].key = ATTR_HREF;
211: tag[1].val = h->style;
212: tag[2].key = ATTR_TYPE;
213: tag[2].val = "text/css";
214: tag[3].key = ATTR_MEDIA;
215: tag[3].val = "all";
216: print_otag(h, TAG_LINK, 4, tag);
217: }
218: }
219:
1.5 schwarze 220: static void
1.26 schwarze 221: print_metaf(struct html *h, enum mandoc_esc deco)
1.5 schwarze 222: {
223: enum htmlfont font;
1.1 schwarze 224:
1.5 schwarze 225: switch (deco) {
1.35 schwarze 226: case ESCAPE_FONTPREV:
1.5 schwarze 227: font = h->metal;
228: break;
1.35 schwarze 229: case ESCAPE_FONTITALIC:
1.5 schwarze 230: font = HTMLFONT_ITALIC;
231: break;
1.35 schwarze 232: case ESCAPE_FONTBOLD:
1.5 schwarze 233: font = HTMLFONT_BOLD;
234: break;
1.35 schwarze 235: case ESCAPE_FONTBI:
1.31 schwarze 236: font = HTMLFONT_BI;
237: break;
1.35 schwarze 238: case ESCAPE_FONT:
1.26 schwarze 239: /* FALLTHROUGH */
1.35 schwarze 240: case ESCAPE_FONTROMAN:
1.5 schwarze 241: font = HTMLFONT_NONE;
242: break;
243: default:
244: abort();
245: /* NOTREACHED */
1.1 schwarze 246: }
247:
1.20 schwarze 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:
1.31 schwarze 256: switch (font) {
1.35 schwarze 257: case HTMLFONT_ITALIC:
1.31 schwarze 258: h->metaf = print_otag(h, TAG_I, 0, NULL);
259: break;
1.35 schwarze 260: case HTMLFONT_BOLD:
1.31 schwarze 261: h->metaf = print_otag(h, TAG_B, 0, NULL);
262: break;
1.35 schwarze 263: case HTMLFONT_BI:
1.31 schwarze 264: h->metaf = print_otag(h, TAG_B, 0, NULL);
265: print_otag(h, TAG_I, 0, NULL);
266: break;
267: default:
268: break;
269: }
1.1 schwarze 270: }
271:
1.26 schwarze 272: int
273: html_strlen(const char *cp)
274: {
1.30 schwarze 275: size_t rsz;
276: int skip, sz;
1.26 schwarze 277:
278: /*
279: * Account for escaped sequences within string length
280: * calculations. This follows the logic in term_strlen() as we
281: * must calculate the width of produced strings.
282: * Assume that characters are always width of "1". This is
283: * hacky, but it gets the job done for approximation of widths.
284: */
285:
286: sz = 0;
1.30 schwarze 287: skip = 0;
288: while (1) {
289: rsz = strcspn(cp, "\\");
290: if (rsz) {
291: cp += rsz;
292: if (skip) {
293: skip = 0;
294: rsz--;
295: }
296: sz += rsz;
297: }
298: if ('\0' == *cp)
299: break;
300: cp++;
301: switch (mandoc_escape(&cp, NULL, NULL)) {
1.35 schwarze 302: case ESCAPE_ERROR:
1.26 schwarze 303: return(sz);
1.35 schwarze 304: case ESCAPE_UNICODE:
1.26 schwarze 305: /* FALLTHROUGH */
1.35 schwarze 306: case ESCAPE_NUMBERED:
1.26 schwarze 307: /* FALLTHROUGH */
1.35 schwarze 308: case ESCAPE_SPECIAL:
1.30 schwarze 309: if (skip)
310: skip = 0;
311: else
312: sz++;
313: break;
1.35 schwarze 314: case ESCAPE_SKIPCHAR:
1.30 schwarze 315: skip = 1;
1.26 schwarze 316: break;
317: default:
318: break;
319: }
320: }
1.30 schwarze 321: return(sz);
1.26 schwarze 322: }
1.1 schwarze 323:
1.5 schwarze 324: static int
1.38 schwarze 325: print_escape(char c)
326: {
327:
328: switch (c) {
329: case '<':
330: printf("<");
331: break;
332: case '>':
333: printf(">");
334: break;
335: case '&':
336: printf("&");
337: break;
338: case '"':
339: printf(""");
340: break;
341: case ASCII_NBRSP:
342: putchar('-');
343: break;
344: case ASCII_HYPH:
345: putchar('-');
346: /* FALLTHROUGH */
347: case ASCII_BREAK:
348: break;
349: default:
350: return(0);
351: }
352: return(1);
353: }
354:
355: static int
1.5 schwarze 356: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 357: {
1.4 schwarze 358: size_t sz;
1.26 schwarze 359: int c, len, nospace;
1.5 schwarze 360: const char *seq;
1.26 schwarze 361: enum mandoc_esc esc;
1.37 schwarze 362: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 363: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 364:
365: nospace = 0;
1.1 schwarze 366:
1.26 schwarze 367: while ('\0' != *p) {
1.30 schwarze 368: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
369: h->flags &= ~HTML_SKIPCHAR;
370: p++;
371: continue;
372: }
373:
1.9 schwarze 374: sz = strcspn(p, rejs);
1.4 schwarze 375:
376: fwrite(p, 1, sz, stdout);
1.26 schwarze 377: p += (int)sz;
1.4 schwarze 378:
1.26 schwarze 379: if ('\0' == *p)
380: break;
381:
1.38 schwarze 382: if (print_escape(*p++))
1.33 schwarze 383: continue;
1.4 schwarze 384:
1.26 schwarze 385: esc = mandoc_escape(&p, &seq, &len);
386: if (ESCAPE_ERROR == esc)
387: break;
1.5 schwarze 388:
1.26 schwarze 389: switch (esc) {
1.35 schwarze 390: case ESCAPE_FONT:
1.30 schwarze 391: /* FALLTHROUGH */
1.35 schwarze 392: case ESCAPE_FONTPREV:
1.30 schwarze 393: /* FALLTHROUGH */
1.35 schwarze 394: case ESCAPE_FONTBOLD:
1.30 schwarze 395: /* FALLTHROUGH */
1.35 schwarze 396: case ESCAPE_FONTITALIC:
1.30 schwarze 397: /* FALLTHROUGH */
1.35 schwarze 398: case ESCAPE_FONTBI:
1.31 schwarze 399: /* FALLTHROUGH */
1.35 schwarze 400: case ESCAPE_FONTROMAN:
1.30 schwarze 401: if (0 == norecurse)
402: print_metaf(h, esc);
403: continue;
1.35 schwarze 404: case ESCAPE_SKIPCHAR:
1.30 schwarze 405: h->flags |= HTML_SKIPCHAR;
406: continue;
407: default:
408: break;
409: }
410:
411: if (h->flags & HTML_SKIPCHAR) {
412: h->flags &= ~HTML_SKIPCHAR;
413: continue;
414: }
415:
416: switch (esc) {
1.35 schwarze 417: case ESCAPE_UNICODE:
1.38 schwarze 418: /* Skip past "u" header. */
1.26 schwarze 419: c = mchars_num2uc(seq + 1, len - 1);
420: if ('\0' != c)
421: printf("&#x%x;", c);
422: break;
1.35 schwarze 423: case ESCAPE_NUMBERED:
1.26 schwarze 424: c = mchars_num2char(seq, len);
1.38 schwarze 425: if ( ! ('\0' == c || print_escape(c)))
1.26 schwarze 426: putchar(c);
427: break;
1.35 schwarze 428: case ESCAPE_SPECIAL:
1.26 schwarze 429: c = mchars_spec2cp(h->symtab, seq, len);
430: if (c > 0)
431: printf("&#%d;", c);
1.38 schwarze 432: else if (-1 == c && 1 == len &&
433: !print_escape(*seq))
1.26 schwarze 434: putchar((int)*seq);
435: break;
1.35 schwarze 436: case ESCAPE_NOSPACE:
1.26 schwarze 437: if ('\0' == *p)
438: nospace = 1;
1.5 schwarze 439: break;
440: default:
441: break;
442: }
1.1 schwarze 443: }
1.5 schwarze 444:
445: return(nospace);
1.1 schwarze 446: }
447:
1.6 schwarze 448: static void
449: print_attr(struct html *h, const char *key, const char *val)
450: {
451: printf(" %s=\"", key);
452: (void)print_encode(h, val, 1);
453: putchar('\"');
454: }
455:
1.1 schwarze 456: struct tag *
1.35 schwarze 457: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 458: int sz, const struct htmlpair *p)
459: {
460: int i;
461: struct tag *t;
462:
1.6 schwarze 463: /* Push this tags onto the stack of open scopes. */
464:
1.1 schwarze 465: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 466: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 467: t->tag = tag;
1.2 schwarze 468: t->next = h->tags.head;
469: h->tags.head = t;
1.1 schwarze 470: } else
471: t = NULL;
472:
473: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 474: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
475: /* Manage keeps! */
476: if ( ! (HTML_KEEP & h->flags)) {
477: if (HTML_PREKEEP & h->flags)
478: h->flags |= HTML_KEEP;
479: putchar(' ');
480: } else
481: printf(" ");
482: }
1.1 schwarze 483:
1.13 schwarze 484: if ( ! (h->flags & HTML_NONOSPACE))
485: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 486: else
487: h->flags |= HTML_NOSPACE;
1.13 schwarze 488:
1.6 schwarze 489: /* Print out the tag name and attributes. */
490:
1.1 schwarze 491: printf("<%s", htmltags[tag].name);
1.6 schwarze 492: for (i = 0; i < sz; i++)
493: print_attr(h, htmlattrs[p[i].key], p[i].val);
494:
495: /* Add non-overridable attributes. */
496:
497: if (TAG_HTML == tag && HTML_XHTML_1_0_STRICT == h->type) {
498: print_attr(h, "xmlns", "http://www.w3.org/1999/xhtml");
499: print_attr(h, "xml:lang", "en");
500: print_attr(h, "lang", "en");
1.1 schwarze 501: }
1.6 schwarze 502:
1.26 schwarze 503: /* Accommodate for XML "well-formed" singleton escaping. */
1.6 schwarze 504:
505: if (HTML_AUTOCLOSE & htmltags[tag].flags)
506: switch (h->type) {
1.35 schwarze 507: case HTML_XHTML_1_0_STRICT:
1.6 schwarze 508: putchar('/');
509: break;
510: default:
511: break;
512: }
513:
1.4 schwarze 514: putchar('>');
1.1 schwarze 515:
516: h->flags |= HTML_NOSPACE;
1.18 schwarze 517:
518: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
519: putchar('\n');
520:
1.1 schwarze 521: return(t);
522: }
523:
524: static void
525: print_ctag(struct html *h, enum htmltag tag)
526: {
1.35 schwarze 527:
1.1 schwarze 528: printf("</%s>", htmltags[tag].name);
1.3 schwarze 529: if (HTML_CLRLINE & htmltags[tag].flags) {
1.1 schwarze 530: h->flags |= HTML_NOSPACE;
1.4 schwarze 531: putchar('\n');
1.35 schwarze 532: }
1.1 schwarze 533: }
534:
535: void
1.6 schwarze 536: print_gen_decls(struct html *h)
537: {
538: const char *doctype;
539: const char *dtd;
540: const char *name;
541:
542: switch (h->type) {
1.35 schwarze 543: case HTML_HTML_4_01_STRICT:
1.6 schwarze 544: name = "HTML";
545: doctype = "-//W3C//DTD HTML 4.01//EN";
546: dtd = "http://www.w3.org/TR/html4/strict.dtd";
547: break;
548: default:
1.26 schwarze 549: puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
1.6 schwarze 550: name = "html";
551: doctype = "-//W3C//DTD XHTML 1.0 Strict//EN";
552: dtd = "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";
553: break;
554: }
555:
1.35 schwarze 556: printf("<!DOCTYPE %s PUBLIC \"%s\" \"%s\">\n",
557: name, doctype, dtd);
1.1 schwarze 558: }
559:
560: void
1.12 schwarze 561: print_text(struct html *h, const char *word)
1.1 schwarze 562: {
563:
1.12 schwarze 564: if ( ! (HTML_NOSPACE & h->flags)) {
565: /* Manage keeps! */
566: if ( ! (HTML_KEEP & h->flags)) {
567: if (HTML_PREKEEP & h->flags)
568: h->flags |= HTML_KEEP;
569: putchar(' ');
570: } else
571: printf(" ");
572: }
1.1 schwarze 573:
1.20 schwarze 574: assert(NULL == h->metaf);
1.31 schwarze 575: switch (h->metac) {
1.35 schwarze 576: case HTMLFONT_ITALIC:
1.31 schwarze 577: h->metaf = print_otag(h, TAG_I, 0, NULL);
578: break;
1.35 schwarze 579: case HTMLFONT_BOLD:
1.31 schwarze 580: h->metaf = print_otag(h, TAG_B, 0, NULL);
581: break;
1.35 schwarze 582: case HTMLFONT_BI:
1.31 schwarze 583: h->metaf = print_otag(h, TAG_B, 0, NULL);
584: print_otag(h, TAG_I, 0, NULL);
585: break;
586: default:
587: break;
588: }
1.20 schwarze 589:
1.12 schwarze 590: assert(word);
1.28 schwarze 591: if ( ! print_encode(h, word, 0)) {
1.13 schwarze 592: if ( ! (h->flags & HTML_NONOSPACE))
593: h->flags &= ~HTML_NOSPACE;
1.28 schwarze 594: } else
595: h->flags |= HTML_NOSPACE;
1.20 schwarze 596:
597: if (h->metaf) {
598: print_tagq(h, h->metaf);
599: h->metaf = NULL;
600: }
1.17 schwarze 601:
602: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 603: }
604:
605: void
606: print_tagq(struct html *h, const struct tag *until)
607: {
608: struct tag *tag;
609:
1.2 schwarze 610: while ((tag = h->tags.head) != NULL) {
1.35 schwarze 611: /*
1.22 schwarze 612: * Remember to close out and nullify the current
613: * meta-font and table, if applicable.
614: */
1.5 schwarze 615: if (tag == h->metaf)
616: h->metaf = NULL;
1.22 schwarze 617: if (tag == h->tblt)
618: h->tblt = NULL;
1.1 schwarze 619: print_ctag(h, tag->tag);
1.2 schwarze 620: h->tags.head = tag->next;
1.1 schwarze 621: free(tag);
622: if (until && tag == until)
623: return;
624: }
625: }
626:
627: void
628: print_stagq(struct html *h, const struct tag *suntil)
629: {
630: struct tag *tag;
631:
1.2 schwarze 632: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 633: if (suntil && tag == suntil)
634: return;
1.35 schwarze 635: /*
1.22 schwarze 636: * Remember to close out and nullify the current
637: * meta-font and table, if applicable.
638: */
1.5 schwarze 639: if (tag == h->metaf)
640: h->metaf = NULL;
1.22 schwarze 641: if (tag == h->tblt)
642: h->tblt = NULL;
1.1 schwarze 643: print_ctag(h, tag->tag);
1.2 schwarze 644: h->tags.head = tag->next;
1.1 schwarze 645: free(tag);
646: }
647: }
648:
649: void
650: bufinit(struct html *h)
651: {
652:
653: h->buf[0] = '\0';
654: h->buflen = 0;
655: }
656:
657: void
658: bufcat_style(struct html *h, const char *key, const char *val)
659: {
660:
661: bufcat(h, key);
1.26 schwarze 662: bufcat(h, ":");
1.1 schwarze 663: bufcat(h, val);
1.26 schwarze 664: bufcat(h, ";");
1.1 schwarze 665: }
666:
667: void
668: bufcat(struct html *h, const char *p)
669: {
1.36 schwarze 670:
671: /*
672: * XXX This is broken and not easy to fix.
673: * When using the -Oincludes option, buffmt_includes()
674: * may pass in strings overrunning BUFSIZ, causing a crash.
675: */
1.1 schwarze 676:
1.26 schwarze 677: h->buflen = strlcat(h->buf, p, BUFSIZ);
678: assert(h->buflen < BUFSIZ);
1.1 schwarze 679: }
680:
681: void
1.26 schwarze 682: bufcat_fmt(struct html *h, const char *fmt, ...)
1.1 schwarze 683: {
684: va_list ap;
685:
686: va_start(ap, fmt);
1.35 schwarze 687: (void)vsnprintf(h->buf + (int)h->buflen,
688: BUFSIZ - h->buflen - 1, fmt, ap);
1.1 schwarze 689: va_end(ap);
690: h->buflen = strlen(h->buf);
691: }
692:
1.26 schwarze 693: static void
1.1 schwarze 694: bufncat(struct html *h, const char *p, size_t sz)
695: {
696:
1.26 schwarze 697: assert(h->buflen + sz + 1 < BUFSIZ);
698: strncat(h->buf, p, sz);
1.1 schwarze 699: h->buflen += sz;
700: }
701:
702: void
703: buffmt_includes(struct html *h, const char *name)
704: {
705: const char *p, *pp;
706:
707: pp = h->base_includes;
1.35 schwarze 708:
1.26 schwarze 709: bufinit(h);
1.1 schwarze 710: while (NULL != (p = strchr(pp, '%'))) {
711: bufncat(h, pp, (size_t)(p - pp));
712: switch (*(p + 1)) {
1.35 schwarze 713: case'I':
1.1 schwarze 714: bufcat(h, name);
715: break;
716: default:
717: bufncat(h, p, 2);
718: break;
719: }
720: pp = p + 2;
721: }
722: if (pp)
723: bufcat(h, pp);
724: }
725:
726: void
1.35 schwarze 727: buffmt_man(struct html *h, const char *name, const char *sec)
1.1 schwarze 728: {
729: const char *p, *pp;
730:
731: pp = h->base_man;
1.35 schwarze 732:
1.26 schwarze 733: bufinit(h);
1.1 schwarze 734: while (NULL != (p = strchr(pp, '%'))) {
735: bufncat(h, pp, (size_t)(p - pp));
736: switch (*(p + 1)) {
1.35 schwarze 737: case 'S':
1.1 schwarze 738: bufcat(h, sec ? sec : "1");
739: break;
1.35 schwarze 740: case 'N':
1.32 schwarze 741: bufcat_fmt(h, "%s", name);
1.1 schwarze 742: break;
743: default:
744: bufncat(h, p, 2);
745: break;
746: }
747: pp = p + 2;
748: }
749: if (pp)
750: bufcat(h, pp);
751: }
752:
753: void
754: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
755: {
756: double v;
757:
758: v = su->scale;
1.26 schwarze 759: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
760: v = 1.0;
1.1 schwarze 761:
1.26 schwarze 762: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.1 schwarze 763: }
764:
1.3 schwarze 765: void
1.26 schwarze 766: bufcat_id(struct html *h, const char *src)
1.3 schwarze 767: {
768:
769: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
770:
1.26 schwarze 771: while ('\0' != *src)
772: bufcat_fmt(h, "%.2x", *src++);
1.3 schwarze 773: }
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