Annotation of src/usr.bin/mandoc/html.c, Revision 1.55
1.55 ! schwarze 1: /* $OpenBSD: html.c,v 1.54 2014/12/20 00:19:54 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: *
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"
1.1 schwarze 31: #include "out.h"
32: #include "html.h"
33: #include "main.h"
34:
35: struct htmldata {
36: const char *name;
37: int flags;
38: #define HTML_CLRLINE (1 << 0)
39: #define HTML_NOSTACK (1 << 1)
1.6 schwarze 40: #define HTML_AUTOCLOSE (1 << 2) /* Tag has auto-closure. */
1.1 schwarze 41: };
42:
43: static const struct htmldata htmltags[TAG_MAX] = {
44: {"html", HTML_CLRLINE}, /* TAG_HTML */
45: {"head", HTML_CLRLINE}, /* TAG_HEAD */
46: {"body", HTML_CLRLINE}, /* TAG_BODY */
1.6 schwarze 47: {"meta", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_META */
1.1 schwarze 48: {"title", HTML_CLRLINE}, /* TAG_TITLE */
49: {"div", HTML_CLRLINE}, /* TAG_DIV */
50: {"h1", 0}, /* TAG_H1 */
51: {"h2", 0}, /* TAG_H2 */
52: {"span", 0}, /* TAG_SPAN */
1.8 schwarze 53: {"link", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_LINK */
1.6 schwarze 54: {"br", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_BR */
1.1 schwarze 55: {"a", 0}, /* TAG_A */
56: {"table", HTML_CLRLINE}, /* TAG_TABLE */
1.18 schwarze 57: {"tbody", HTML_CLRLINE}, /* TAG_TBODY */
1.6 schwarze 58: {"col", HTML_CLRLINE | HTML_NOSTACK | HTML_AUTOCLOSE}, /* TAG_COL */
1.1 schwarze 59: {"tr", HTML_CLRLINE}, /* TAG_TR */
60: {"td", HTML_CLRLINE}, /* TAG_TD */
61: {"li", HTML_CLRLINE}, /* TAG_LI */
62: {"ul", HTML_CLRLINE}, /* TAG_UL */
63: {"ol", HTML_CLRLINE}, /* TAG_OL */
1.18 schwarze 64: {"dl", HTML_CLRLINE}, /* TAG_DL */
65: {"dt", HTML_CLRLINE}, /* TAG_DT */
66: {"dd", HTML_CLRLINE}, /* TAG_DD */
67: {"blockquote", HTML_CLRLINE}, /* TAG_BLOCKQUOTE */
68: {"pre", HTML_CLRLINE }, /* TAG_PRE */
1.19 schwarze 69: {"b", 0 }, /* TAG_B */
70: {"i", 0 }, /* TAG_I */
1.20 schwarze 71: {"code", 0 }, /* TAG_CODE */
72: {"small", 0 }, /* TAG_SMALL */
1.42 schwarze 73: {"style", HTML_CLRLINE}, /* TAG_STYLE */
1.43 schwarze 74: {"math", HTML_CLRLINE}, /* TAG_MATH */
75: {"mrow", 0}, /* TAG_MROW */
76: {"mi", 0}, /* TAG_MI */
77: {"mo", 0}, /* TAG_MO */
78: {"msup", 0}, /* TAG_MSUP */
79: {"msub", 0}, /* TAG_MSUB */
80: {"msubsup", 0}, /* TAG_MSUBSUP */
81: {"mfrac", 0}, /* TAG_MFRAC */
82: {"msqrt", 0}, /* TAG_MSQRT */
83: {"mfenced", 0}, /* TAG_MFENCED */
84: {"mtable", 0}, /* TAG_MTABLE */
85: {"mtr", 0}, /* TAG_MTR */
86: {"mtd", 0}, /* TAG_MTD */
1.44 schwarze 87: {"munderover", 0}, /* TAG_MUNDEROVER */
88: {"munder", 0}, /* TAG_MUNDER*/
89: {"mover", 0}, /* TAG_MOVER*/
1.5 schwarze 90: };
91:
92: static const char *const htmlattrs[ATTR_MAX] = {
1.19 schwarze 93: "name", /* ATTR_NAME */
94: "rel", /* ATTR_REL */
95: "href", /* ATTR_HREF */
96: "type", /* ATTR_TYPE */
97: "media", /* ATTR_MEDIA */
98: "class", /* ATTR_CLASS */
99: "style", /* ATTR_STYLE */
100: "id", /* ATTR_ID */
1.22 schwarze 101: "colspan", /* ATTR_COLSPAN */
1.42 schwarze 102: "charset", /* ATTR_CHARSET */
1.43 schwarze 103: "open", /* ATTR_OPEN */
104: "close", /* ATTR_CLOSE */
1.45 schwarze 105: "mathvariant", /* ATTR_MATHVARIANT */
1.1 schwarze 106: };
107:
1.26 schwarze 108: static const char *const roffscales[SCALE_MAX] = {
109: "cm", /* SCALE_CM */
110: "in", /* SCALE_IN */
111: "pc", /* SCALE_PC */
112: "pt", /* SCALE_PT */
113: "em", /* SCALE_EM */
114: "em", /* SCALE_MM */
115: "ex", /* SCALE_EN */
116: "ex", /* SCALE_BU */
117: "em", /* SCALE_VS */
118: "ex", /* SCALE_FS */
119: };
1.5 schwarze 120:
1.26 schwarze 121: static void bufncat(struct html *, const char *, size_t);
1.54 schwarze 122: static void print_ctag(struct html *, struct tag *);
1.38 schwarze 123: static int print_escape(char);
1.26 schwarze 124: static int print_encode(struct html *, const char *, int);
125: static void print_metaf(struct html *, enum mandoc_esc);
126: static void print_attr(struct html *, const char *, const char *);
1.5 schwarze 127:
1.35 schwarze 128:
1.50 schwarze 129: void *
130: html_alloc(const struct mchars *mchars, char *outopts)
1.1 schwarze 131: {
132: struct html *h;
1.29 schwarze 133: const char *toks[5];
1.1 schwarze 134: char *v;
135:
136: toks[0] = "style";
137: toks[1] = "man";
138: toks[2] = "includes";
1.29 schwarze 139: toks[3] = "fragment";
140: toks[4] = NULL;
1.1 schwarze 141:
1.24 schwarze 142: h = mandoc_calloc(1, sizeof(struct html));
1.1 schwarze 143:
1.2 schwarze 144: h->tags.head = NULL;
1.50 schwarze 145: h->symtab = mchars;
1.1 schwarze 146:
147: while (outopts && *outopts)
148: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.35 schwarze 149: case 0:
1.1 schwarze 150: h->style = v;
151: break;
1.35 schwarze 152: case 1:
1.1 schwarze 153: h->base_man = v;
154: break;
1.35 schwarze 155: case 2:
1.1 schwarze 156: h->base_includes = v;
1.29 schwarze 157: break;
1.35 schwarze 158: case 3:
1.29 schwarze 159: h->oflags |= HTML_FRAGMENT;
1.1 schwarze 160: break;
161: default:
162: break;
163: }
164:
165: return(h);
166: }
167:
168: void
169: html_free(void *p)
170: {
171: struct tag *tag;
172: struct html *h;
173:
174: h = (struct html *)p;
175:
1.2 schwarze 176: while ((tag = h->tags.head) != NULL) {
1.35 schwarze 177: h->tags.head = tag->next;
1.1 schwarze 178: free(tag);
179: }
180:
181: free(h);
182: }
183:
184: void
185: print_gen_head(struct html *h)
186: {
187: struct htmlpair tag[4];
1.42 schwarze 188: struct tag *t;
189:
190: tag[0].key = ATTR_CHARSET;
191: tag[0].val = "utf-8";
192: print_otag(h, TAG_META, 1, tag);
1.1 schwarze 193:
1.42 schwarze 194: /*
195: * Print a default style-sheet.
196: */
197: t = print_otag(h, TAG_STYLE, 0, NULL);
198: print_text(h, "table.head, table.foot { width: 100%; }\n"
199: "td.head-rtitle, td.foot-os { text-align: right; }\n"
200: "td.head-vol { text-align: center; }\n"
201: "table.foot td { width: 50%; }\n"
202: "table.head td { width: 33%; }\n"
203: "div.spacer { margin: 1em 0; }\n");
204: print_tagq(h, t);
1.1 schwarze 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: }
217: }
218:
1.5 schwarze 219: static void
1.26 schwarze 220: print_metaf(struct html *h, enum mandoc_esc deco)
1.5 schwarze 221: {
222: enum htmlfont font;
1.1 schwarze 223:
1.5 schwarze 224: switch (deco) {
1.35 schwarze 225: case ESCAPE_FONTPREV:
1.5 schwarze 226: font = h->metal;
227: break;
1.35 schwarze 228: case ESCAPE_FONTITALIC:
1.5 schwarze 229: font = HTMLFONT_ITALIC;
230: break;
1.35 schwarze 231: case ESCAPE_FONTBOLD:
1.5 schwarze 232: font = HTMLFONT_BOLD;
233: break;
1.35 schwarze 234: case ESCAPE_FONTBI:
1.31 schwarze 235: font = HTMLFONT_BI;
236: break;
1.35 schwarze 237: case ESCAPE_FONT:
1.26 schwarze 238: /* FALLTHROUGH */
1.35 schwarze 239: case ESCAPE_FONTROMAN:
1.5 schwarze 240: font = HTMLFONT_NONE;
241: break;
242: default:
243: abort();
244: /* NOTREACHED */
1.1 schwarze 245: }
246:
1.20 schwarze 247: if (h->metaf) {
248: print_tagq(h, h->metaf);
249: h->metaf = NULL;
250: }
251:
252: h->metal = h->metac;
253: h->metac = font;
254:
1.31 schwarze 255: switch (font) {
1.35 schwarze 256: case HTMLFONT_ITALIC:
1.31 schwarze 257: h->metaf = print_otag(h, TAG_I, 0, NULL);
258: break;
1.35 schwarze 259: case HTMLFONT_BOLD:
1.31 schwarze 260: h->metaf = print_otag(h, TAG_B, 0, NULL);
261: break;
1.35 schwarze 262: case HTMLFONT_BI:
1.31 schwarze 263: h->metaf = print_otag(h, TAG_B, 0, NULL);
264: print_otag(h, TAG_I, 0, NULL);
265: break;
266: default:
267: break;
268: }
1.1 schwarze 269: }
270:
1.26 schwarze 271: int
272: html_strlen(const char *cp)
273: {
1.30 schwarze 274: size_t rsz;
275: int skip, sz;
1.26 schwarze 276:
277: /*
278: * Account for escaped sequences within string length
279: * calculations. This follows the logic in term_strlen() as we
280: * must calculate the width of produced strings.
281: * Assume that characters are always width of "1". This is
282: * hacky, but it gets the job done for approximation of widths.
283: */
284:
285: sz = 0;
1.30 schwarze 286: skip = 0;
287: while (1) {
288: rsz = strcspn(cp, "\\");
289: if (rsz) {
290: cp += rsz;
291: if (skip) {
292: skip = 0;
293: rsz--;
294: }
295: sz += rsz;
296: }
297: if ('\0' == *cp)
298: break;
299: cp++;
300: switch (mandoc_escape(&cp, NULL, NULL)) {
1.35 schwarze 301: case ESCAPE_ERROR:
1.26 schwarze 302: return(sz);
1.35 schwarze 303: case ESCAPE_UNICODE:
1.26 schwarze 304: /* FALLTHROUGH */
1.35 schwarze 305: case ESCAPE_NUMBERED:
1.26 schwarze 306: /* FALLTHROUGH */
1.35 schwarze 307: case ESCAPE_SPECIAL:
1.55 ! schwarze 308: /* FALLTHROUGH */
! 309: case ESCAPE_OVERSTRIKE:
1.30 schwarze 310: if (skip)
311: skip = 0;
312: else
313: sz++;
314: break;
1.35 schwarze 315: case ESCAPE_SKIPCHAR:
1.30 schwarze 316: skip = 1;
1.26 schwarze 317: break;
318: default:
319: break;
320: }
321: }
1.30 schwarze 322: return(sz);
1.26 schwarze 323: }
1.1 schwarze 324:
1.5 schwarze 325: static int
1.38 schwarze 326: print_escape(char c)
327: {
328:
329: switch (c) {
330: case '<':
331: printf("<");
332: break;
333: case '>':
334: printf(">");
335: break;
336: case '&':
337: printf("&");
338: break;
339: case '"':
340: printf(""");
341: break;
342: case ASCII_NBRSP:
343: putchar('-');
344: break;
345: case ASCII_HYPH:
346: putchar('-');
347: /* FALLTHROUGH */
348: case ASCII_BREAK:
349: break;
350: default:
351: return(0);
352: }
353: return(1);
354: }
355:
356: static int
1.5 schwarze 357: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 358: {
1.4 schwarze 359: size_t sz;
1.26 schwarze 360: int c, len, nospace;
1.5 schwarze 361: const char *seq;
1.26 schwarze 362: enum mandoc_esc esc;
1.37 schwarze 363: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 364: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 365:
366: nospace = 0;
1.1 schwarze 367:
1.26 schwarze 368: while ('\0' != *p) {
1.30 schwarze 369: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
370: h->flags &= ~HTML_SKIPCHAR;
371: p++;
372: continue;
373: }
374:
1.9 schwarze 375: sz = strcspn(p, rejs);
1.4 schwarze 376:
377: fwrite(p, 1, sz, stdout);
1.26 schwarze 378: p += (int)sz;
1.4 schwarze 379:
1.26 schwarze 380: if ('\0' == *p)
381: break;
382:
1.38 schwarze 383: if (print_escape(*p++))
1.33 schwarze 384: continue;
1.4 schwarze 385:
1.26 schwarze 386: esc = mandoc_escape(&p, &seq, &len);
387: if (ESCAPE_ERROR == esc)
388: break;
1.5 schwarze 389:
1.26 schwarze 390: switch (esc) {
1.35 schwarze 391: case ESCAPE_FONT:
1.30 schwarze 392: /* FALLTHROUGH */
1.35 schwarze 393: case ESCAPE_FONTPREV:
1.30 schwarze 394: /* FALLTHROUGH */
1.35 schwarze 395: case ESCAPE_FONTBOLD:
1.30 schwarze 396: /* FALLTHROUGH */
1.35 schwarze 397: case ESCAPE_FONTITALIC:
1.30 schwarze 398: /* FALLTHROUGH */
1.35 schwarze 399: case ESCAPE_FONTBI:
1.31 schwarze 400: /* FALLTHROUGH */
1.35 schwarze 401: case ESCAPE_FONTROMAN:
1.30 schwarze 402: if (0 == norecurse)
403: print_metaf(h, esc);
404: continue;
1.35 schwarze 405: case ESCAPE_SKIPCHAR:
1.30 schwarze 406: h->flags |= HTML_SKIPCHAR;
407: continue;
408: default:
409: break;
410: }
411:
412: if (h->flags & HTML_SKIPCHAR) {
413: h->flags &= ~HTML_SKIPCHAR;
414: continue;
415: }
416:
417: switch (esc) {
1.35 schwarze 418: case ESCAPE_UNICODE:
1.38 schwarze 419: /* Skip past "u" header. */
1.26 schwarze 420: c = mchars_num2uc(seq + 1, len - 1);
421: break;
1.35 schwarze 422: case ESCAPE_NUMBERED:
1.26 schwarze 423: c = mchars_num2char(seq, len);
1.51 schwarze 424: if (c < 0)
425: continue;
1.26 schwarze 426: break;
1.35 schwarze 427: case ESCAPE_SPECIAL:
1.26 schwarze 428: c = mchars_spec2cp(h->symtab, seq, len);
1.51 schwarze 429: if (c <= 0)
430: continue;
1.26 schwarze 431: break;
1.35 schwarze 432: case ESCAPE_NOSPACE:
1.26 schwarze 433: if ('\0' == *p)
434: nospace = 1;
1.49 schwarze 435: continue;
1.55 ! schwarze 436: case ESCAPE_OVERSTRIKE:
! 437: if (len == 0)
! 438: continue;
! 439: c = seq[len - 1];
! 440: break;
1.5 schwarze 441: default:
1.49 schwarze 442: continue;
1.5 schwarze 443: }
1.51 schwarze 444: if ((c < 0x20 && c != 0x09) ||
445: (c > 0x7E && c < 0xA0))
1.49 schwarze 446: c = 0xFFFD;
447: if (c > 0x7E)
448: printf("&#%d;", c);
449: else if ( ! print_escape(c))
450: putchar(c);
1.1 schwarze 451: }
1.5 schwarze 452:
453: return(nospace);
1.1 schwarze 454: }
455:
1.6 schwarze 456: static void
457: print_attr(struct html *h, const char *key, const char *val)
458: {
459: printf(" %s=\"", key);
460: (void)print_encode(h, val, 1);
461: putchar('\"');
462: }
463:
1.1 schwarze 464: struct tag *
1.35 schwarze 465: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 466: int sz, const struct htmlpair *p)
467: {
468: int i;
469: struct tag *t;
470:
1.6 schwarze 471: /* Push this tags onto the stack of open scopes. */
472:
1.1 schwarze 473: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 474: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 475: t->tag = tag;
1.2 schwarze 476: t->next = h->tags.head;
477: h->tags.head = t;
1.1 schwarze 478: } else
479: t = NULL;
480:
481: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 482: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
483: /* Manage keeps! */
484: if ( ! (HTML_KEEP & h->flags)) {
485: if (HTML_PREKEEP & h->flags)
486: h->flags |= HTML_KEEP;
487: putchar(' ');
488: } else
489: printf(" ");
490: }
1.1 schwarze 491:
1.13 schwarze 492: if ( ! (h->flags & HTML_NONOSPACE))
493: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 494: else
495: h->flags |= HTML_NOSPACE;
1.13 schwarze 496:
1.6 schwarze 497: /* Print out the tag name and attributes. */
498:
1.1 schwarze 499: printf("<%s", htmltags[tag].name);
1.6 schwarze 500: for (i = 0; i < sz; i++)
501: print_attr(h, htmlattrs[p[i].key], p[i].val);
502:
1.42 schwarze 503: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 504:
505: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.42 schwarze 506: putchar('/');
1.6 schwarze 507:
1.4 schwarze 508: putchar('>');
1.1 schwarze 509:
510: h->flags |= HTML_NOSPACE;
1.18 schwarze 511:
512: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
513: putchar('\n');
514:
1.1 schwarze 515: return(t);
516: }
517:
518: static void
1.54 schwarze 519: print_ctag(struct html *h, struct tag *tag)
1.1 schwarze 520: {
1.35 schwarze 521:
1.54 schwarze 522: /*
523: * Remember to close out and nullify the current
524: * meta-font and table, if applicable.
525: */
526: if (tag == h->metaf)
527: h->metaf = NULL;
528: if (tag == h->tblt)
529: h->tblt = NULL;
530:
531: printf("</%s>", htmltags[tag->tag].name);
532: if (HTML_CLRLINE & htmltags[tag->tag].flags) {
1.1 schwarze 533: h->flags |= HTML_NOSPACE;
1.4 schwarze 534: putchar('\n');
1.35 schwarze 535: }
1.54 schwarze 536:
537: h->tags.head = tag->next;
538: free(tag);
1.1 schwarze 539: }
540:
541: void
1.6 schwarze 542: print_gen_decls(struct html *h)
543: {
544:
1.42 schwarze 545: puts("<!DOCTYPE html>");
1.1 schwarze 546: }
547:
548: void
1.12 schwarze 549: print_text(struct html *h, const char *word)
1.1 schwarze 550: {
551:
1.12 schwarze 552: if ( ! (HTML_NOSPACE & h->flags)) {
553: /* Manage keeps! */
554: if ( ! (HTML_KEEP & h->flags)) {
555: if (HTML_PREKEEP & h->flags)
556: h->flags |= HTML_KEEP;
557: putchar(' ');
558: } else
559: printf(" ");
560: }
1.1 schwarze 561:
1.20 schwarze 562: assert(NULL == h->metaf);
1.31 schwarze 563: switch (h->metac) {
1.35 schwarze 564: case HTMLFONT_ITALIC:
1.31 schwarze 565: h->metaf = print_otag(h, TAG_I, 0, NULL);
566: break;
1.35 schwarze 567: case HTMLFONT_BOLD:
1.31 schwarze 568: h->metaf = print_otag(h, TAG_B, 0, NULL);
569: break;
1.35 schwarze 570: case HTMLFONT_BI:
1.31 schwarze 571: h->metaf = print_otag(h, TAG_B, 0, NULL);
572: print_otag(h, TAG_I, 0, NULL);
573: break;
574: default:
575: break;
576: }
1.20 schwarze 577:
1.12 schwarze 578: assert(word);
1.28 schwarze 579: if ( ! print_encode(h, word, 0)) {
1.13 schwarze 580: if ( ! (h->flags & HTML_NONOSPACE))
581: h->flags &= ~HTML_NOSPACE;
1.53 schwarze 582: h->flags &= ~HTML_NONEWLINE;
1.28 schwarze 583: } else
1.53 schwarze 584: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.20 schwarze 585:
586: if (h->metaf) {
587: print_tagq(h, h->metaf);
588: h->metaf = NULL;
589: }
1.17 schwarze 590:
591: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 592: }
593:
594: void
595: print_tagq(struct html *h, const struct tag *until)
596: {
597: struct tag *tag;
598:
1.2 schwarze 599: while ((tag = h->tags.head) != NULL) {
1.54 schwarze 600: print_ctag(h, tag);
1.1 schwarze 601: if (until && tag == until)
602: return;
603: }
604: }
605:
606: void
607: print_stagq(struct html *h, const struct tag *suntil)
608: {
609: struct tag *tag;
610:
1.2 schwarze 611: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 612: if (suntil && tag == suntil)
613: return;
1.54 schwarze 614: print_ctag(h, tag);
1.1 schwarze 615: }
616: }
1.42 schwarze 617:
618: void
619: print_paragraph(struct html *h)
620: {
621: struct tag *t;
622: struct htmlpair tag;
623:
624: PAIR_CLASS_INIT(&tag, "spacer");
625: t = print_otag(h, TAG_DIV, 1, &tag);
626: print_tagq(h, t);
627: }
628:
1.1 schwarze 629:
630: void
631: bufinit(struct html *h)
632: {
633:
634: h->buf[0] = '\0';
635: h->buflen = 0;
636: }
637:
638: void
639: bufcat_style(struct html *h, const char *key, const char *val)
640: {
641:
642: bufcat(h, key);
1.26 schwarze 643: bufcat(h, ":");
1.1 schwarze 644: bufcat(h, val);
1.26 schwarze 645: bufcat(h, ";");
1.1 schwarze 646: }
647:
648: void
649: bufcat(struct html *h, const char *p)
650: {
1.36 schwarze 651:
652: /*
653: * XXX This is broken and not easy to fix.
654: * When using the -Oincludes option, buffmt_includes()
655: * may pass in strings overrunning BUFSIZ, causing a crash.
656: */
1.1 schwarze 657:
1.26 schwarze 658: h->buflen = strlcat(h->buf, p, BUFSIZ);
659: assert(h->buflen < BUFSIZ);
1.1 schwarze 660: }
661:
662: void
1.26 schwarze 663: bufcat_fmt(struct html *h, const char *fmt, ...)
1.1 schwarze 664: {
665: va_list ap;
666:
667: va_start(ap, fmt);
1.35 schwarze 668: (void)vsnprintf(h->buf + (int)h->buflen,
669: BUFSIZ - h->buflen - 1, fmt, ap);
1.1 schwarze 670: va_end(ap);
671: h->buflen = strlen(h->buf);
672: }
673:
1.26 schwarze 674: static void
1.1 schwarze 675: bufncat(struct html *h, const char *p, size_t sz)
676: {
677:
1.26 schwarze 678: assert(h->buflen + sz + 1 < BUFSIZ);
679: strncat(h->buf, p, sz);
1.1 schwarze 680: h->buflen += sz;
681: }
682:
683: void
684: buffmt_includes(struct html *h, const char *name)
685: {
686: const char *p, *pp;
687:
688: pp = h->base_includes;
1.35 schwarze 689:
1.26 schwarze 690: bufinit(h);
1.1 schwarze 691: while (NULL != (p = strchr(pp, '%'))) {
692: bufncat(h, pp, (size_t)(p - pp));
693: switch (*(p + 1)) {
1.35 schwarze 694: case'I':
1.1 schwarze 695: bufcat(h, name);
696: break;
697: default:
698: bufncat(h, p, 2);
699: break;
700: }
701: pp = p + 2;
702: }
703: if (pp)
704: bufcat(h, pp);
705: }
706:
707: void
1.35 schwarze 708: buffmt_man(struct html *h, const char *name, const char *sec)
1.1 schwarze 709: {
710: const char *p, *pp;
711:
712: pp = h->base_man;
1.35 schwarze 713:
1.26 schwarze 714: bufinit(h);
1.1 schwarze 715: while (NULL != (p = strchr(pp, '%'))) {
716: bufncat(h, pp, (size_t)(p - pp));
717: switch (*(p + 1)) {
1.35 schwarze 718: case 'S':
1.1 schwarze 719: bufcat(h, sec ? sec : "1");
720: break;
1.35 schwarze 721: case 'N':
1.32 schwarze 722: bufcat_fmt(h, "%s", name);
1.1 schwarze 723: break;
724: default:
725: bufncat(h, p, 2);
726: break;
727: }
728: pp = p + 2;
729: }
730: if (pp)
731: bufcat(h, pp);
732: }
733:
734: void
735: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
736: {
737: double v;
738:
739: v = su->scale;
1.26 schwarze 740: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
741: v = 1.0;
1.40 schwarze 742: else if (SCALE_BU == su->unit)
743: v /= 24.0;
1.1 schwarze 744:
1.26 schwarze 745: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.1 schwarze 746: }
747:
1.3 schwarze 748: void
1.26 schwarze 749: bufcat_id(struct html *h, const char *src)
1.3 schwarze 750: {
751:
752: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
753:
1.26 schwarze 754: while ('\0' != *src)
755: bufcat_fmt(h, "%.2x", *src++);
1.3 schwarze 756: }
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