Annotation of src/usr.bin/mandoc/html.c, Revision 1.51
1.51 ! schwarze 1: /* $OpenBSD: html.c,v 1.50 2014/10/28 17:35:42 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"
1.26 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: {"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);
123: static void print_ctag(struct html *, enum htmltag);
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 *
131: html_alloc(const struct mchars *mchars, char *outopts)
1.1 schwarze 132: {
133: struct html *h;
1.29 schwarze 134: const char *toks[5];
1.1 schwarze 135: char *v;
136:
137: toks[0] = "style";
138: toks[1] = "man";
139: toks[2] = "includes";
1.29 schwarze 140: toks[3] = "fragment";
141: toks[4] = NULL;
1.1 schwarze 142:
1.24 schwarze 143: h = mandoc_calloc(1, sizeof(struct html));
1.1 schwarze 144:
1.2 schwarze 145: h->tags.head = NULL;
1.50 schwarze 146: h->symtab = mchars;
1.1 schwarze 147:
148: while (outopts && *outopts)
149: switch (getsubopt(&outopts, UNCONST(toks), &v)) {
1.35 schwarze 150: case 0:
1.1 schwarze 151: h->style = v;
152: break;
1.35 schwarze 153: case 1:
1.1 schwarze 154: h->base_man = v;
155: break;
1.35 schwarze 156: case 2:
1.1 schwarze 157: h->base_includes = v;
1.29 schwarze 158: break;
1.35 schwarze 159: case 3:
1.29 schwarze 160: h->oflags |= HTML_FRAGMENT;
1.1 schwarze 161: break;
162: default:
163: break;
164: }
165:
166: return(h);
167: }
168:
169: void
170: html_free(void *p)
171: {
172: struct tag *tag;
173: struct html *h;
174:
175: h = (struct html *)p;
176:
1.2 schwarze 177: while ((tag = h->tags.head) != NULL) {
1.35 schwarze 178: h->tags.head = tag->next;
1.1 schwarze 179: free(tag);
180: }
181:
182: free(h);
183: }
184:
185: void
186: print_gen_head(struct html *h)
187: {
188: struct htmlpair tag[4];
1.42 schwarze 189: struct tag *t;
190:
191: tag[0].key = ATTR_CHARSET;
192: tag[0].val = "utf-8";
193: print_otag(h, TAG_META, 1, tag);
1.1 schwarze 194:
1.42 schwarze 195: /*
196: * Print a default style-sheet.
197: */
198: t = print_otag(h, TAG_STYLE, 0, NULL);
199: print_text(h, "table.head, table.foot { width: 100%; }\n"
200: "td.head-rtitle, td.foot-os { text-align: right; }\n"
201: "td.head-vol { text-align: center; }\n"
202: "table.foot td { width: 50%; }\n"
203: "table.head td { width: 33%; }\n"
204: "div.spacer { margin: 1em 0; }\n");
205: print_tagq(h, t);
1.1 schwarze 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: break;
1.35 schwarze 421: case ESCAPE_NUMBERED:
1.26 schwarze 422: c = mchars_num2char(seq, len);
1.51 ! schwarze 423: if (c < 0)
! 424: continue;
1.26 schwarze 425: break;
1.35 schwarze 426: case ESCAPE_SPECIAL:
1.26 schwarze 427: c = mchars_spec2cp(h->symtab, seq, len);
1.51 ! schwarze 428: if (c <= 0)
! 429: continue;
1.26 schwarze 430: break;
1.35 schwarze 431: case ESCAPE_NOSPACE:
1.26 schwarze 432: if ('\0' == *p)
433: nospace = 1;
1.49 schwarze 434: continue;
1.5 schwarze 435: default:
1.49 schwarze 436: continue;
1.5 schwarze 437: }
1.51 ! schwarze 438: if ((c < 0x20 && c != 0x09) ||
! 439: (c > 0x7E && c < 0xA0))
1.49 schwarze 440: c = 0xFFFD;
441: if (c > 0x7E)
442: printf("&#%d;", c);
443: else if ( ! print_escape(c))
444: putchar(c);
1.1 schwarze 445: }
1.5 schwarze 446:
447: return(nospace);
1.1 schwarze 448: }
449:
1.6 schwarze 450: static void
451: print_attr(struct html *h, const char *key, const char *val)
452: {
453: printf(" %s=\"", key);
454: (void)print_encode(h, val, 1);
455: putchar('\"');
456: }
457:
1.1 schwarze 458: struct tag *
1.35 schwarze 459: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 460: int sz, const struct htmlpair *p)
461: {
462: int i;
463: struct tag *t;
464:
1.6 schwarze 465: /* Push this tags onto the stack of open scopes. */
466:
1.1 schwarze 467: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 468: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 469: t->tag = tag;
1.2 schwarze 470: t->next = h->tags.head;
471: h->tags.head = t;
1.1 schwarze 472: } else
473: t = NULL;
474:
475: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 476: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
477: /* Manage keeps! */
478: if ( ! (HTML_KEEP & h->flags)) {
479: if (HTML_PREKEEP & h->flags)
480: h->flags |= HTML_KEEP;
481: putchar(' ');
482: } else
483: printf(" ");
484: }
1.1 schwarze 485:
1.13 schwarze 486: if ( ! (h->flags & HTML_NONOSPACE))
487: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 488: else
489: h->flags |= HTML_NOSPACE;
1.13 schwarze 490:
1.6 schwarze 491: /* Print out the tag name and attributes. */
492:
1.1 schwarze 493: printf("<%s", htmltags[tag].name);
1.6 schwarze 494: for (i = 0; i < sz; i++)
495: print_attr(h, htmlattrs[p[i].key], p[i].val);
496:
1.42 schwarze 497: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 498:
499: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.42 schwarze 500: putchar('/');
1.6 schwarze 501:
1.4 schwarze 502: putchar('>');
1.1 schwarze 503:
504: h->flags |= HTML_NOSPACE;
1.18 schwarze 505:
506: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
507: putchar('\n');
508:
1.1 schwarze 509: return(t);
510: }
511:
512: static void
513: print_ctag(struct html *h, enum htmltag tag)
514: {
1.35 schwarze 515:
1.1 schwarze 516: printf("</%s>", htmltags[tag].name);
1.3 schwarze 517: if (HTML_CLRLINE & htmltags[tag].flags) {
1.1 schwarze 518: h->flags |= HTML_NOSPACE;
1.4 schwarze 519: putchar('\n');
1.35 schwarze 520: }
1.1 schwarze 521: }
522:
523: void
1.6 schwarze 524: print_gen_decls(struct html *h)
525: {
526:
1.42 schwarze 527: puts("<!DOCTYPE html>");
1.1 schwarze 528: }
529:
530: void
1.12 schwarze 531: print_text(struct html *h, const char *word)
1.1 schwarze 532: {
533:
1.12 schwarze 534: if ( ! (HTML_NOSPACE & h->flags)) {
535: /* Manage keeps! */
536: if ( ! (HTML_KEEP & h->flags)) {
537: if (HTML_PREKEEP & h->flags)
538: h->flags |= HTML_KEEP;
539: putchar(' ');
540: } else
541: printf(" ");
542: }
1.1 schwarze 543:
1.20 schwarze 544: assert(NULL == h->metaf);
1.31 schwarze 545: switch (h->metac) {
1.35 schwarze 546: case HTMLFONT_ITALIC:
1.31 schwarze 547: h->metaf = print_otag(h, TAG_I, 0, NULL);
548: break;
1.35 schwarze 549: case HTMLFONT_BOLD:
1.31 schwarze 550: h->metaf = print_otag(h, TAG_B, 0, NULL);
551: break;
1.35 schwarze 552: case HTMLFONT_BI:
1.31 schwarze 553: h->metaf = print_otag(h, TAG_B, 0, NULL);
554: print_otag(h, TAG_I, 0, NULL);
555: break;
556: default:
557: break;
558: }
1.20 schwarze 559:
1.12 schwarze 560: assert(word);
1.28 schwarze 561: if ( ! print_encode(h, word, 0)) {
1.13 schwarze 562: if ( ! (h->flags & HTML_NONOSPACE))
563: h->flags &= ~HTML_NOSPACE;
1.28 schwarze 564: } else
565: h->flags |= HTML_NOSPACE;
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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