Annotation of src/usr.bin/mandoc/html.c, Revision 1.57
1.57 ! schwarze 1: /* $OpenBSD: html.c,v 1.56 2015/03/27 21:17:16 schwarze Exp $ */
1.1 schwarze 2: /*
1.42 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.55 schwarze 4: * Copyright (c) 2011-2015 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: *
1.56 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.56 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 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"
1.1 schwarze 31: #include "out.h"
32: #include "html.h"
1.56 schwarze 33: #include "manconf.h"
1.1 schwarze 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: {"pre", HTML_CLRLINE }, /* TAG_PRE */
1.19 schwarze 70: {"b", 0 }, /* TAG_B */
71: {"i", 0 }, /* TAG_I */
1.20 schwarze 72: {"code", 0 }, /* TAG_CODE */
73: {"small", 0 }, /* TAG_SMALL */
1.42 schwarze 74: {"style", HTML_CLRLINE}, /* TAG_STYLE */
1.43 schwarze 75: {"math", HTML_CLRLINE}, /* TAG_MATH */
76: {"mrow", 0}, /* TAG_MROW */
77: {"mi", 0}, /* TAG_MI */
78: {"mo", 0}, /* TAG_MO */
79: {"msup", 0}, /* TAG_MSUP */
80: {"msub", 0}, /* TAG_MSUB */
81: {"msubsup", 0}, /* TAG_MSUBSUP */
82: {"mfrac", 0}, /* TAG_MFRAC */
83: {"msqrt", 0}, /* TAG_MSQRT */
84: {"mfenced", 0}, /* TAG_MFENCED */
85: {"mtable", 0}, /* TAG_MTABLE */
86: {"mtr", 0}, /* TAG_MTR */
87: {"mtd", 0}, /* TAG_MTD */
1.44 schwarze 88: {"munderover", 0}, /* TAG_MUNDEROVER */
89: {"munder", 0}, /* TAG_MUNDER*/
90: {"mover", 0}, /* TAG_MOVER*/
1.5 schwarze 91: };
92:
93: static const char *const htmlattrs[ATTR_MAX] = {
1.19 schwarze 94: "name", /* ATTR_NAME */
95: "rel", /* ATTR_REL */
96: "href", /* ATTR_HREF */
97: "type", /* ATTR_TYPE */
98: "media", /* ATTR_MEDIA */
99: "class", /* ATTR_CLASS */
100: "style", /* ATTR_STYLE */
101: "id", /* ATTR_ID */
1.22 schwarze 102: "colspan", /* ATTR_COLSPAN */
1.42 schwarze 103: "charset", /* ATTR_CHARSET */
1.43 schwarze 104: "open", /* ATTR_OPEN */
105: "close", /* ATTR_CLOSE */
1.45 schwarze 106: "mathvariant", /* ATTR_MATHVARIANT */
1.1 schwarze 107: };
108:
1.26 schwarze 109: static const char *const roffscales[SCALE_MAX] = {
110: "cm", /* SCALE_CM */
111: "in", /* SCALE_IN */
112: "pc", /* SCALE_PC */
113: "pt", /* SCALE_PT */
114: "em", /* SCALE_EM */
115: "em", /* SCALE_MM */
116: "ex", /* SCALE_EN */
117: "ex", /* SCALE_BU */
118: "em", /* SCALE_VS */
119: "ex", /* SCALE_FS */
120: };
1.5 schwarze 121:
1.26 schwarze 122: static void bufncat(struct html *, const char *, size_t);
1.54 schwarze 123: static void print_ctag(struct html *, struct tag *);
1.38 schwarze 124: static int print_escape(char);
1.26 schwarze 125: static int print_encode(struct html *, const char *, int);
126: static void print_metaf(struct html *, enum mandoc_esc);
127: static void print_attr(struct html *, const char *, const char *);
1.5 schwarze 128:
1.35 schwarze 129:
1.50 schwarze 130: void *
1.56 schwarze 131: html_alloc(const struct mchars *mchars, const struct manoutput *outopts)
1.1 schwarze 132: {
133: struct html *h;
134:
1.24 schwarze 135: h = mandoc_calloc(1, sizeof(struct html));
1.1 schwarze 136:
1.2 schwarze 137: h->tags.head = NULL;
1.50 schwarze 138: h->symtab = mchars;
1.1 schwarze 139:
1.56 schwarze 140: h->style = outopts->style;
141: h->base_man = outopts->man;
142: h->base_includes = outopts->includes;
143: if (outopts->fragment)
144: h->oflags |= HTML_FRAGMENT;
1.1 schwarze 145:
146: return(h);
147: }
148:
149: void
150: html_free(void *p)
151: {
152: struct tag *tag;
153: struct html *h;
154:
155: h = (struct html *)p;
156:
1.2 schwarze 157: while ((tag = h->tags.head) != NULL) {
1.35 schwarze 158: h->tags.head = tag->next;
1.1 schwarze 159: free(tag);
160: }
161:
162: free(h);
163: }
164:
165: void
166: print_gen_head(struct html *h)
167: {
168: struct htmlpair tag[4];
1.42 schwarze 169: struct tag *t;
170:
171: tag[0].key = ATTR_CHARSET;
172: tag[0].val = "utf-8";
173: print_otag(h, TAG_META, 1, tag);
1.1 schwarze 174:
1.42 schwarze 175: /*
176: * Print a default style-sheet.
177: */
178: t = print_otag(h, TAG_STYLE, 0, NULL);
179: print_text(h, "table.head, table.foot { width: 100%; }\n"
180: "td.head-rtitle, td.foot-os { text-align: right; }\n"
181: "td.head-vol { text-align: center; }\n"
182: "table.foot td { width: 50%; }\n"
183: "table.head td { width: 33%; }\n"
184: "div.spacer { margin: 1em 0; }\n");
185: print_tagq(h, t);
1.1 schwarze 186:
187: if (h->style) {
188: tag[0].key = ATTR_REL;
189: tag[0].val = "stylesheet";
190: tag[1].key = ATTR_HREF;
191: tag[1].val = h->style;
192: tag[2].key = ATTR_TYPE;
193: tag[2].val = "text/css";
194: tag[3].key = ATTR_MEDIA;
195: tag[3].val = "all";
196: print_otag(h, TAG_LINK, 4, tag);
197: }
198: }
199:
1.5 schwarze 200: static void
1.26 schwarze 201: print_metaf(struct html *h, enum mandoc_esc deco)
1.5 schwarze 202: {
203: enum htmlfont font;
1.1 schwarze 204:
1.5 schwarze 205: switch (deco) {
1.35 schwarze 206: case ESCAPE_FONTPREV:
1.5 schwarze 207: font = h->metal;
208: break;
1.35 schwarze 209: case ESCAPE_FONTITALIC:
1.5 schwarze 210: font = HTMLFONT_ITALIC;
211: break;
1.35 schwarze 212: case ESCAPE_FONTBOLD:
1.5 schwarze 213: font = HTMLFONT_BOLD;
214: break;
1.35 schwarze 215: case ESCAPE_FONTBI:
1.31 schwarze 216: font = HTMLFONT_BI;
217: break;
1.35 schwarze 218: case ESCAPE_FONT:
1.26 schwarze 219: /* FALLTHROUGH */
1.35 schwarze 220: case ESCAPE_FONTROMAN:
1.5 schwarze 221: font = HTMLFONT_NONE;
222: break;
223: default:
224: abort();
1.1 schwarze 225: }
226:
1.20 schwarze 227: if (h->metaf) {
228: print_tagq(h, h->metaf);
229: h->metaf = NULL;
230: }
231:
232: h->metal = h->metac;
233: h->metac = font;
234:
1.31 schwarze 235: switch (font) {
1.35 schwarze 236: case HTMLFONT_ITALIC:
1.31 schwarze 237: h->metaf = print_otag(h, TAG_I, 0, NULL);
238: break;
1.35 schwarze 239: case HTMLFONT_BOLD:
1.31 schwarze 240: h->metaf = print_otag(h, TAG_B, 0, NULL);
241: break;
1.35 schwarze 242: case HTMLFONT_BI:
1.31 schwarze 243: h->metaf = print_otag(h, TAG_B, 0, NULL);
244: print_otag(h, TAG_I, 0, NULL);
245: break;
246: default:
247: break;
248: }
1.1 schwarze 249: }
250:
1.26 schwarze 251: int
252: html_strlen(const char *cp)
253: {
1.30 schwarze 254: size_t rsz;
255: int skip, sz;
1.26 schwarze 256:
257: /*
258: * Account for escaped sequences within string length
259: * calculations. This follows the logic in term_strlen() as we
260: * must calculate the width of produced strings.
261: * Assume that characters are always width of "1". This is
262: * hacky, but it gets the job done for approximation of widths.
263: */
264:
265: sz = 0;
1.30 schwarze 266: skip = 0;
267: while (1) {
268: rsz = strcspn(cp, "\\");
269: if (rsz) {
270: cp += rsz;
271: if (skip) {
272: skip = 0;
273: rsz--;
274: }
275: sz += rsz;
276: }
277: if ('\0' == *cp)
278: break;
279: cp++;
280: switch (mandoc_escape(&cp, NULL, NULL)) {
1.35 schwarze 281: case ESCAPE_ERROR:
1.26 schwarze 282: return(sz);
1.35 schwarze 283: case ESCAPE_UNICODE:
1.26 schwarze 284: /* FALLTHROUGH */
1.35 schwarze 285: case ESCAPE_NUMBERED:
1.26 schwarze 286: /* FALLTHROUGH */
1.35 schwarze 287: case ESCAPE_SPECIAL:
1.55 schwarze 288: /* FALLTHROUGH */
289: case ESCAPE_OVERSTRIKE:
1.30 schwarze 290: if (skip)
291: skip = 0;
292: else
293: sz++;
294: break;
1.35 schwarze 295: case ESCAPE_SKIPCHAR:
1.30 schwarze 296: skip = 1;
1.26 schwarze 297: break;
298: default:
299: break;
300: }
301: }
1.30 schwarze 302: return(sz);
1.26 schwarze 303: }
1.1 schwarze 304:
1.5 schwarze 305: static int
1.38 schwarze 306: print_escape(char c)
307: {
308:
309: switch (c) {
310: case '<':
311: printf("<");
312: break;
313: case '>':
314: printf(">");
315: break;
316: case '&':
317: printf("&");
318: break;
319: case '"':
320: printf(""");
321: break;
322: case ASCII_NBRSP:
323: putchar('-');
324: break;
325: case ASCII_HYPH:
326: putchar('-');
327: /* FALLTHROUGH */
328: case ASCII_BREAK:
329: break;
330: default:
331: return(0);
332: }
333: return(1);
334: }
335:
336: static int
1.5 schwarze 337: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 338: {
1.4 schwarze 339: size_t sz;
1.26 schwarze 340: int c, len, nospace;
1.5 schwarze 341: const char *seq;
1.26 schwarze 342: enum mandoc_esc esc;
1.37 schwarze 343: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 344: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 345:
346: nospace = 0;
1.1 schwarze 347:
1.26 schwarze 348: while ('\0' != *p) {
1.30 schwarze 349: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
350: h->flags &= ~HTML_SKIPCHAR;
351: p++;
352: continue;
353: }
354:
1.9 schwarze 355: sz = strcspn(p, rejs);
1.4 schwarze 356:
357: fwrite(p, 1, sz, stdout);
1.26 schwarze 358: p += (int)sz;
1.4 schwarze 359:
1.26 schwarze 360: if ('\0' == *p)
361: break;
362:
1.38 schwarze 363: if (print_escape(*p++))
1.33 schwarze 364: continue;
1.4 schwarze 365:
1.26 schwarze 366: esc = mandoc_escape(&p, &seq, &len);
367: if (ESCAPE_ERROR == esc)
368: break;
1.5 schwarze 369:
1.26 schwarze 370: switch (esc) {
1.35 schwarze 371: case ESCAPE_FONT:
1.30 schwarze 372: /* FALLTHROUGH */
1.35 schwarze 373: case ESCAPE_FONTPREV:
1.30 schwarze 374: /* FALLTHROUGH */
1.35 schwarze 375: case ESCAPE_FONTBOLD:
1.30 schwarze 376: /* FALLTHROUGH */
1.35 schwarze 377: case ESCAPE_FONTITALIC:
1.30 schwarze 378: /* FALLTHROUGH */
1.35 schwarze 379: case ESCAPE_FONTBI:
1.31 schwarze 380: /* FALLTHROUGH */
1.35 schwarze 381: case ESCAPE_FONTROMAN:
1.30 schwarze 382: if (0 == norecurse)
383: print_metaf(h, esc);
384: continue;
1.35 schwarze 385: case ESCAPE_SKIPCHAR:
1.30 schwarze 386: h->flags |= HTML_SKIPCHAR;
387: continue;
388: default:
389: break;
390: }
391:
392: if (h->flags & HTML_SKIPCHAR) {
393: h->flags &= ~HTML_SKIPCHAR;
394: continue;
395: }
396:
397: switch (esc) {
1.35 schwarze 398: case ESCAPE_UNICODE:
1.38 schwarze 399: /* Skip past "u" header. */
1.26 schwarze 400: c = mchars_num2uc(seq + 1, len - 1);
401: break;
1.35 schwarze 402: case ESCAPE_NUMBERED:
1.26 schwarze 403: c = mchars_num2char(seq, len);
1.51 schwarze 404: if (c < 0)
405: continue;
1.26 schwarze 406: break;
1.35 schwarze 407: case ESCAPE_SPECIAL:
1.26 schwarze 408: c = mchars_spec2cp(h->symtab, seq, len);
1.51 schwarze 409: if (c <= 0)
410: continue;
1.26 schwarze 411: break;
1.35 schwarze 412: case ESCAPE_NOSPACE:
1.26 schwarze 413: if ('\0' == *p)
414: nospace = 1;
1.49 schwarze 415: continue;
1.55 schwarze 416: case ESCAPE_OVERSTRIKE:
417: if (len == 0)
418: continue;
419: c = seq[len - 1];
420: break;
1.5 schwarze 421: default:
1.49 schwarze 422: continue;
1.5 schwarze 423: }
1.51 schwarze 424: if ((c < 0x20 && c != 0x09) ||
425: (c > 0x7E && c < 0xA0))
1.49 schwarze 426: c = 0xFFFD;
427: if (c > 0x7E)
428: printf("&#%d;", c);
429: else if ( ! print_escape(c))
430: putchar(c);
1.1 schwarze 431: }
1.5 schwarze 432:
433: return(nospace);
1.1 schwarze 434: }
435:
1.6 schwarze 436: static void
437: print_attr(struct html *h, const char *key, const char *val)
438: {
439: printf(" %s=\"", key);
440: (void)print_encode(h, val, 1);
441: putchar('\"');
442: }
443:
1.1 schwarze 444: struct tag *
1.35 schwarze 445: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 446: int sz, const struct htmlpair *p)
447: {
448: int i;
449: struct tag *t;
450:
1.6 schwarze 451: /* Push this tags onto the stack of open scopes. */
452:
1.1 schwarze 453: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 454: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 455: t->tag = tag;
1.2 schwarze 456: t->next = h->tags.head;
457: h->tags.head = t;
1.1 schwarze 458: } else
459: t = NULL;
460:
461: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 462: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
463: /* Manage keeps! */
464: if ( ! (HTML_KEEP & h->flags)) {
465: if (HTML_PREKEEP & h->flags)
466: h->flags |= HTML_KEEP;
467: putchar(' ');
468: } else
469: printf(" ");
470: }
1.1 schwarze 471:
1.13 schwarze 472: if ( ! (h->flags & HTML_NONOSPACE))
473: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 474: else
475: h->flags |= HTML_NOSPACE;
1.13 schwarze 476:
1.6 schwarze 477: /* Print out the tag name and attributes. */
478:
1.1 schwarze 479: printf("<%s", htmltags[tag].name);
1.6 schwarze 480: for (i = 0; i < sz; i++)
481: print_attr(h, htmlattrs[p[i].key], p[i].val);
482:
1.42 schwarze 483: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 484:
485: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.42 schwarze 486: putchar('/');
1.6 schwarze 487:
1.4 schwarze 488: putchar('>');
1.1 schwarze 489:
490: h->flags |= HTML_NOSPACE;
1.18 schwarze 491:
492: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
493: putchar('\n');
494:
1.1 schwarze 495: return(t);
496: }
497:
498: static void
1.54 schwarze 499: print_ctag(struct html *h, struct tag *tag)
1.1 schwarze 500: {
1.35 schwarze 501:
1.54 schwarze 502: /*
503: * Remember to close out and nullify the current
504: * meta-font and table, if applicable.
505: */
506: if (tag == h->metaf)
507: h->metaf = NULL;
508: if (tag == h->tblt)
509: h->tblt = NULL;
510:
511: printf("</%s>", htmltags[tag->tag].name);
512: if (HTML_CLRLINE & htmltags[tag->tag].flags) {
1.1 schwarze 513: h->flags |= HTML_NOSPACE;
1.4 schwarze 514: putchar('\n');
1.35 schwarze 515: }
1.54 schwarze 516:
517: h->tags.head = tag->next;
518: free(tag);
1.1 schwarze 519: }
520:
521: void
1.6 schwarze 522: print_gen_decls(struct html *h)
523: {
524:
1.42 schwarze 525: puts("<!DOCTYPE html>");
1.1 schwarze 526: }
527:
528: void
1.12 schwarze 529: print_text(struct html *h, const char *word)
1.1 schwarze 530: {
531:
1.12 schwarze 532: if ( ! (HTML_NOSPACE & h->flags)) {
533: /* Manage keeps! */
534: if ( ! (HTML_KEEP & h->flags)) {
535: if (HTML_PREKEEP & h->flags)
536: h->flags |= HTML_KEEP;
537: putchar(' ');
538: } else
539: printf(" ");
540: }
1.1 schwarze 541:
1.20 schwarze 542: assert(NULL == h->metaf);
1.31 schwarze 543: switch (h->metac) {
1.35 schwarze 544: case HTMLFONT_ITALIC:
1.31 schwarze 545: h->metaf = print_otag(h, TAG_I, 0, NULL);
546: break;
1.35 schwarze 547: case HTMLFONT_BOLD:
1.31 schwarze 548: h->metaf = print_otag(h, TAG_B, 0, NULL);
549: break;
1.35 schwarze 550: case HTMLFONT_BI:
1.31 schwarze 551: h->metaf = print_otag(h, TAG_B, 0, NULL);
552: print_otag(h, TAG_I, 0, NULL);
553: break;
554: default:
555: break;
556: }
1.20 schwarze 557:
1.12 schwarze 558: assert(word);
1.28 schwarze 559: if ( ! print_encode(h, word, 0)) {
1.13 schwarze 560: if ( ! (h->flags & HTML_NONOSPACE))
561: h->flags &= ~HTML_NOSPACE;
1.53 schwarze 562: h->flags &= ~HTML_NONEWLINE;
1.28 schwarze 563: } else
1.53 schwarze 564: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.20 schwarze 565:
566: if (h->metaf) {
567: print_tagq(h, h->metaf);
568: h->metaf = NULL;
569: }
1.17 schwarze 570:
571: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 572: }
573:
574: void
575: print_tagq(struct html *h, const struct tag *until)
576: {
577: struct tag *tag;
578:
1.2 schwarze 579: while ((tag = h->tags.head) != NULL) {
1.54 schwarze 580: print_ctag(h, tag);
1.1 schwarze 581: if (until && tag == until)
582: return;
583: }
584: }
585:
586: void
587: print_stagq(struct html *h, const struct tag *suntil)
588: {
589: struct tag *tag;
590:
1.2 schwarze 591: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 592: if (suntil && tag == suntil)
593: return;
1.54 schwarze 594: print_ctag(h, tag);
1.1 schwarze 595: }
596: }
1.42 schwarze 597:
598: void
599: print_paragraph(struct html *h)
600: {
601: struct tag *t;
602: struct htmlpair tag;
603:
604: PAIR_CLASS_INIT(&tag, "spacer");
605: t = print_otag(h, TAG_DIV, 1, &tag);
606: print_tagq(h, t);
607: }
608:
1.1 schwarze 609:
610: void
611: bufinit(struct html *h)
612: {
613:
614: h->buf[0] = '\0';
615: h->buflen = 0;
616: }
617:
618: void
619: bufcat_style(struct html *h, const char *key, const char *val)
620: {
621:
622: bufcat(h, key);
1.26 schwarze 623: bufcat(h, ":");
1.1 schwarze 624: bufcat(h, val);
1.26 schwarze 625: bufcat(h, ";");
1.1 schwarze 626: }
627:
628: void
629: bufcat(struct html *h, const char *p)
630: {
1.36 schwarze 631:
632: /*
633: * XXX This is broken and not easy to fix.
634: * When using the -Oincludes option, buffmt_includes()
635: * may pass in strings overrunning BUFSIZ, causing a crash.
636: */
1.1 schwarze 637:
1.26 schwarze 638: h->buflen = strlcat(h->buf, p, BUFSIZ);
639: assert(h->buflen < BUFSIZ);
1.1 schwarze 640: }
641:
642: void
1.26 schwarze 643: bufcat_fmt(struct html *h, const char *fmt, ...)
1.1 schwarze 644: {
645: va_list ap;
646:
647: va_start(ap, fmt);
1.35 schwarze 648: (void)vsnprintf(h->buf + (int)h->buflen,
649: BUFSIZ - h->buflen - 1, fmt, ap);
1.1 schwarze 650: va_end(ap);
651: h->buflen = strlen(h->buf);
652: }
653:
1.26 schwarze 654: static void
1.1 schwarze 655: bufncat(struct html *h, const char *p, size_t sz)
656: {
657:
1.26 schwarze 658: assert(h->buflen + sz + 1 < BUFSIZ);
659: strncat(h->buf, p, sz);
1.1 schwarze 660: h->buflen += sz;
661: }
662:
663: void
664: buffmt_includes(struct html *h, const char *name)
665: {
666: const char *p, *pp;
667:
668: pp = h->base_includes;
1.35 schwarze 669:
1.26 schwarze 670: bufinit(h);
1.1 schwarze 671: while (NULL != (p = strchr(pp, '%'))) {
672: bufncat(h, pp, (size_t)(p - pp));
673: switch (*(p + 1)) {
1.35 schwarze 674: case'I':
1.1 schwarze 675: bufcat(h, name);
676: break;
677: default:
678: bufncat(h, p, 2);
679: break;
680: }
681: pp = p + 2;
682: }
683: if (pp)
684: bufcat(h, pp);
685: }
686:
687: void
1.35 schwarze 688: buffmt_man(struct html *h, const char *name, const char *sec)
1.1 schwarze 689: {
690: const char *p, *pp;
691:
692: pp = h->base_man;
1.35 schwarze 693:
1.26 schwarze 694: bufinit(h);
1.1 schwarze 695: while (NULL != (p = strchr(pp, '%'))) {
696: bufncat(h, pp, (size_t)(p - pp));
697: switch (*(p + 1)) {
1.35 schwarze 698: case 'S':
1.1 schwarze 699: bufcat(h, sec ? sec : "1");
700: break;
1.35 schwarze 701: case 'N':
1.32 schwarze 702: bufcat_fmt(h, "%s", name);
1.1 schwarze 703: break;
704: default:
705: bufncat(h, p, 2);
706: break;
707: }
708: pp = p + 2;
709: }
710: if (pp)
711: bufcat(h, pp);
712: }
713:
714: void
715: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
716: {
717: double v;
718:
719: v = su->scale;
1.26 schwarze 720: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
721: v = 1.0;
1.40 schwarze 722: else if (SCALE_BU == su->unit)
723: v /= 24.0;
1.1 schwarze 724:
1.26 schwarze 725: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.1 schwarze 726: }
727:
1.3 schwarze 728: void
1.26 schwarze 729: bufcat_id(struct html *h, const char *src)
1.3 schwarze 730: {
731:
732: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
733:
1.26 schwarze 734: while ('\0' != *src)
735: bufcat_fmt(h, "%.2x", *src++);
1.3 schwarze 736: }
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