Annotation of src/usr.bin/mandoc/html.c, Revision 1.53
1.53 ! schwarze 1: /* $OpenBSD: html.c,v 1.52 2014/12/01 04:32:34 schwarze Exp $ */
1.1 schwarze 2: /*
1.42 schwarze 3: * Copyright (c) 2008-2011, 2014 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"
1.1 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);
122: static void print_ctag(struct html *, enum htmltag);
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:
1.30 schwarze 308: if (skip)
309: skip = 0;
310: else
311: sz++;
312: break;
1.35 schwarze 313: case ESCAPE_SKIPCHAR:
1.30 schwarze 314: skip = 1;
1.26 schwarze 315: break;
316: default:
317: break;
318: }
319: }
1.30 schwarze 320: return(sz);
1.26 schwarze 321: }
1.1 schwarze 322:
1.5 schwarze 323: static int
1.38 schwarze 324: print_escape(char c)
325: {
326:
327: switch (c) {
328: case '<':
329: printf("<");
330: break;
331: case '>':
332: printf(">");
333: break;
334: case '&':
335: printf("&");
336: break;
337: case '"':
338: printf(""");
339: break;
340: case ASCII_NBRSP:
341: putchar('-');
342: break;
343: case ASCII_HYPH:
344: putchar('-');
345: /* FALLTHROUGH */
346: case ASCII_BREAK:
347: break;
348: default:
349: return(0);
350: }
351: return(1);
352: }
353:
354: static int
1.5 schwarze 355: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 356: {
1.4 schwarze 357: size_t sz;
1.26 schwarze 358: int c, len, nospace;
1.5 schwarze 359: const char *seq;
1.26 schwarze 360: enum mandoc_esc esc;
1.37 schwarze 361: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 362: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 363:
364: nospace = 0;
1.1 schwarze 365:
1.26 schwarze 366: while ('\0' != *p) {
1.30 schwarze 367: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
368: h->flags &= ~HTML_SKIPCHAR;
369: p++;
370: continue;
371: }
372:
1.9 schwarze 373: sz = strcspn(p, rejs);
1.4 schwarze 374:
375: fwrite(p, 1, sz, stdout);
1.26 schwarze 376: p += (int)sz;
1.4 schwarze 377:
1.26 schwarze 378: if ('\0' == *p)
379: break;
380:
1.38 schwarze 381: if (print_escape(*p++))
1.33 schwarze 382: continue;
1.4 schwarze 383:
1.26 schwarze 384: esc = mandoc_escape(&p, &seq, &len);
385: if (ESCAPE_ERROR == esc)
386: break;
1.5 schwarze 387:
1.26 schwarze 388: switch (esc) {
1.35 schwarze 389: case ESCAPE_FONT:
1.30 schwarze 390: /* FALLTHROUGH */
1.35 schwarze 391: case ESCAPE_FONTPREV:
1.30 schwarze 392: /* FALLTHROUGH */
1.35 schwarze 393: case ESCAPE_FONTBOLD:
1.30 schwarze 394: /* FALLTHROUGH */
1.35 schwarze 395: case ESCAPE_FONTITALIC:
1.30 schwarze 396: /* FALLTHROUGH */
1.35 schwarze 397: case ESCAPE_FONTBI:
1.31 schwarze 398: /* FALLTHROUGH */
1.35 schwarze 399: case ESCAPE_FONTROMAN:
1.30 schwarze 400: if (0 == norecurse)
401: print_metaf(h, esc);
402: continue;
1.35 schwarze 403: case ESCAPE_SKIPCHAR:
1.30 schwarze 404: h->flags |= HTML_SKIPCHAR;
405: continue;
406: default:
407: break;
408: }
409:
410: if (h->flags & HTML_SKIPCHAR) {
411: h->flags &= ~HTML_SKIPCHAR;
412: continue;
413: }
414:
415: switch (esc) {
1.35 schwarze 416: case ESCAPE_UNICODE:
1.38 schwarze 417: /* Skip past "u" header. */
1.26 schwarze 418: c = mchars_num2uc(seq + 1, len - 1);
419: break;
1.35 schwarze 420: case ESCAPE_NUMBERED:
1.26 schwarze 421: c = mchars_num2char(seq, len);
1.51 schwarze 422: if (c < 0)
423: continue;
1.26 schwarze 424: break;
1.35 schwarze 425: case ESCAPE_SPECIAL:
1.26 schwarze 426: c = mchars_spec2cp(h->symtab, seq, len);
1.51 schwarze 427: if (c <= 0)
428: continue;
1.26 schwarze 429: break;
1.35 schwarze 430: case ESCAPE_NOSPACE:
1.26 schwarze 431: if ('\0' == *p)
432: nospace = 1;
1.49 schwarze 433: continue;
1.5 schwarze 434: default:
1.49 schwarze 435: continue;
1.5 schwarze 436: }
1.51 schwarze 437: if ((c < 0x20 && c != 0x09) ||
438: (c > 0x7E && c < 0xA0))
1.49 schwarze 439: c = 0xFFFD;
440: if (c > 0x7E)
441: printf("&#%d;", c);
442: else if ( ! print_escape(c))
443: putchar(c);
1.1 schwarze 444: }
1.5 schwarze 445:
446: return(nospace);
1.1 schwarze 447: }
448:
1.6 schwarze 449: static void
450: print_attr(struct html *h, const char *key, const char *val)
451: {
452: printf(" %s=\"", key);
453: (void)print_encode(h, val, 1);
454: putchar('\"');
455: }
456:
1.1 schwarze 457: struct tag *
1.35 schwarze 458: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 459: int sz, const struct htmlpair *p)
460: {
461: int i;
462: struct tag *t;
463:
1.6 schwarze 464: /* Push this tags onto the stack of open scopes. */
465:
1.1 schwarze 466: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 467: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 468: t->tag = tag;
1.2 schwarze 469: t->next = h->tags.head;
470: h->tags.head = t;
1.1 schwarze 471: } else
472: t = NULL;
473:
474: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 475: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
476: /* Manage keeps! */
477: if ( ! (HTML_KEEP & h->flags)) {
478: if (HTML_PREKEEP & h->flags)
479: h->flags |= HTML_KEEP;
480: putchar(' ');
481: } else
482: printf(" ");
483: }
1.1 schwarze 484:
1.13 schwarze 485: if ( ! (h->flags & HTML_NONOSPACE))
486: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 487: else
488: h->flags |= HTML_NOSPACE;
1.13 schwarze 489:
1.6 schwarze 490: /* Print out the tag name and attributes. */
491:
1.1 schwarze 492: printf("<%s", htmltags[tag].name);
1.6 schwarze 493: for (i = 0; i < sz; i++)
494: print_attr(h, htmlattrs[p[i].key], p[i].val);
495:
1.42 schwarze 496: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 497:
498: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.42 schwarze 499: putchar('/');
1.6 schwarze 500:
1.4 schwarze 501: putchar('>');
1.1 schwarze 502:
503: h->flags |= HTML_NOSPACE;
1.18 schwarze 504:
505: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
506: putchar('\n');
507:
1.1 schwarze 508: return(t);
509: }
510:
511: static void
512: print_ctag(struct html *h, enum htmltag tag)
513: {
1.35 schwarze 514:
1.1 schwarze 515: printf("</%s>", htmltags[tag].name);
1.3 schwarze 516: if (HTML_CLRLINE & htmltags[tag].flags) {
1.1 schwarze 517: h->flags |= HTML_NOSPACE;
1.4 schwarze 518: putchar('\n');
1.35 schwarze 519: }
1.1 schwarze 520: }
521:
522: void
1.6 schwarze 523: print_gen_decls(struct html *h)
524: {
525:
1.42 schwarze 526: puts("<!DOCTYPE html>");
1.1 schwarze 527: }
528:
529: void
1.12 schwarze 530: print_text(struct html *h, const char *word)
1.1 schwarze 531: {
532:
1.12 schwarze 533: if ( ! (HTML_NOSPACE & h->flags)) {
534: /* Manage keeps! */
535: if ( ! (HTML_KEEP & h->flags)) {
536: if (HTML_PREKEEP & h->flags)
537: h->flags |= HTML_KEEP;
538: putchar(' ');
539: } else
540: printf(" ");
541: }
1.1 schwarze 542:
1.20 schwarze 543: assert(NULL == h->metaf);
1.31 schwarze 544: switch (h->metac) {
1.35 schwarze 545: case HTMLFONT_ITALIC:
1.31 schwarze 546: h->metaf = print_otag(h, TAG_I, 0, NULL);
547: break;
1.35 schwarze 548: case HTMLFONT_BOLD:
1.31 schwarze 549: h->metaf = print_otag(h, TAG_B, 0, NULL);
550: break;
1.35 schwarze 551: case HTMLFONT_BI:
1.31 schwarze 552: h->metaf = print_otag(h, TAG_B, 0, NULL);
553: print_otag(h, TAG_I, 0, NULL);
554: break;
555: default:
556: break;
557: }
1.20 schwarze 558:
1.12 schwarze 559: assert(word);
1.28 schwarze 560: if ( ! print_encode(h, word, 0)) {
1.13 schwarze 561: if ( ! (h->flags & HTML_NONOSPACE))
562: h->flags &= ~HTML_NOSPACE;
1.53 ! schwarze 563: h->flags &= ~HTML_NONEWLINE;
1.28 schwarze 564: } else
1.53 ! schwarze 565: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.20 schwarze 566:
567: if (h->metaf) {
568: print_tagq(h, h->metaf);
569: h->metaf = NULL;
570: }
1.17 schwarze 571:
572: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 573: }
574:
575: void
576: print_tagq(struct html *h, const struct tag *until)
577: {
578: struct tag *tag;
579:
1.2 schwarze 580: while ((tag = h->tags.head) != NULL) {
1.35 schwarze 581: /*
1.22 schwarze 582: * Remember to close out and nullify the current
583: * meta-font and table, if applicable.
584: */
1.5 schwarze 585: if (tag == h->metaf)
586: h->metaf = NULL;
1.22 schwarze 587: if (tag == h->tblt)
588: h->tblt = NULL;
1.1 schwarze 589: print_ctag(h, tag->tag);
1.2 schwarze 590: h->tags.head = tag->next;
1.1 schwarze 591: free(tag);
592: if (until && tag == until)
593: return;
594: }
595: }
596:
597: void
598: print_stagq(struct html *h, const struct tag *suntil)
599: {
600: struct tag *tag;
601:
1.2 schwarze 602: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 603: if (suntil && tag == suntil)
604: return;
1.35 schwarze 605: /*
1.22 schwarze 606: * Remember to close out and nullify the current
607: * meta-font and table, if applicable.
608: */
1.5 schwarze 609: if (tag == h->metaf)
610: h->metaf = NULL;
1.22 schwarze 611: if (tag == h->tblt)
612: h->tblt = NULL;
1.1 schwarze 613: print_ctag(h, tag->tag);
1.2 schwarze 614: h->tags.head = tag->next;
1.1 schwarze 615: free(tag);
616: }
617: }
1.42 schwarze 618:
619: void
620: print_paragraph(struct html *h)
621: {
622: struct tag *t;
623: struct htmlpair tag;
624:
625: PAIR_CLASS_INIT(&tag, "spacer");
626: t = print_otag(h, TAG_DIV, 1, &tag);
627: print_tagq(h, t);
628: }
629:
1.1 schwarze 630:
631: void
632: bufinit(struct html *h)
633: {
634:
635: h->buf[0] = '\0';
636: h->buflen = 0;
637: }
638:
639: void
640: bufcat_style(struct html *h, const char *key, const char *val)
641: {
642:
643: bufcat(h, key);
1.26 schwarze 644: bufcat(h, ":");
1.1 schwarze 645: bufcat(h, val);
1.26 schwarze 646: bufcat(h, ";");
1.1 schwarze 647: }
648:
649: void
650: bufcat(struct html *h, const char *p)
651: {
1.36 schwarze 652:
653: /*
654: * XXX This is broken and not easy to fix.
655: * When using the -Oincludes option, buffmt_includes()
656: * may pass in strings overrunning BUFSIZ, causing a crash.
657: */
1.1 schwarze 658:
1.26 schwarze 659: h->buflen = strlcat(h->buf, p, BUFSIZ);
660: assert(h->buflen < BUFSIZ);
1.1 schwarze 661: }
662:
663: void
1.26 schwarze 664: bufcat_fmt(struct html *h, const char *fmt, ...)
1.1 schwarze 665: {
666: va_list ap;
667:
668: va_start(ap, fmt);
1.35 schwarze 669: (void)vsnprintf(h->buf + (int)h->buflen,
670: BUFSIZ - h->buflen - 1, fmt, ap);
1.1 schwarze 671: va_end(ap);
672: h->buflen = strlen(h->buf);
673: }
674:
1.26 schwarze 675: static void
1.1 schwarze 676: bufncat(struct html *h, const char *p, size_t sz)
677: {
678:
1.26 schwarze 679: assert(h->buflen + sz + 1 < BUFSIZ);
680: strncat(h->buf, p, sz);
1.1 schwarze 681: h->buflen += sz;
682: }
683:
684: void
685: buffmt_includes(struct html *h, const char *name)
686: {
687: const char *p, *pp;
688:
689: pp = h->base_includes;
1.35 schwarze 690:
1.26 schwarze 691: bufinit(h);
1.1 schwarze 692: while (NULL != (p = strchr(pp, '%'))) {
693: bufncat(h, pp, (size_t)(p - pp));
694: switch (*(p + 1)) {
1.35 schwarze 695: case'I':
1.1 schwarze 696: bufcat(h, name);
697: break;
698: default:
699: bufncat(h, p, 2);
700: break;
701: }
702: pp = p + 2;
703: }
704: if (pp)
705: bufcat(h, pp);
706: }
707:
708: void
1.35 schwarze 709: buffmt_man(struct html *h, const char *name, const char *sec)
1.1 schwarze 710: {
711: const char *p, *pp;
712:
713: pp = h->base_man;
1.35 schwarze 714:
1.26 schwarze 715: bufinit(h);
1.1 schwarze 716: while (NULL != (p = strchr(pp, '%'))) {
717: bufncat(h, pp, (size_t)(p - pp));
718: switch (*(p + 1)) {
1.35 schwarze 719: case 'S':
1.1 schwarze 720: bufcat(h, sec ? sec : "1");
721: break;
1.35 schwarze 722: case 'N':
1.32 schwarze 723: bufcat_fmt(h, "%s", name);
1.1 schwarze 724: break;
725: default:
726: bufncat(h, p, 2);
727: break;
728: }
729: pp = p + 2;
730: }
731: if (pp)
732: bufcat(h, pp);
733: }
734:
735: void
736: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
737: {
738: double v;
739:
740: v = su->scale;
1.26 schwarze 741: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
742: v = 1.0;
1.40 schwarze 743: else if (SCALE_BU == su->unit)
744: v /= 24.0;
1.1 schwarze 745:
1.26 schwarze 746: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.1 schwarze 747: }
748:
1.3 schwarze 749: void
1.26 schwarze 750: bufcat_id(struct html *h, const char *src)
1.3 schwarze 751: {
752:
753: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
754:
1.26 schwarze 755: while ('\0' != *src)
756: bufcat_fmt(h, "%.2x", *src++);
1.3 schwarze 757: }
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