Annotation of src/usr.bin/mandoc/html.c, Revision 1.56
1.56 ! schwarze 1: /* $OpenBSD: html.c,v 1.55 2015/01/21 20:20:49 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();
225: /* NOTREACHED */
1.1 schwarze 226: }
227:
1.20 schwarze 228: if (h->metaf) {
229: print_tagq(h, h->metaf);
230: h->metaf = NULL;
231: }
232:
233: h->metal = h->metac;
234: h->metac = font;
235:
1.31 schwarze 236: switch (font) {
1.35 schwarze 237: case HTMLFONT_ITALIC:
1.31 schwarze 238: h->metaf = print_otag(h, TAG_I, 0, NULL);
239: break;
1.35 schwarze 240: case HTMLFONT_BOLD:
1.31 schwarze 241: h->metaf = print_otag(h, TAG_B, 0, NULL);
242: break;
1.35 schwarze 243: case HTMLFONT_BI:
1.31 schwarze 244: h->metaf = print_otag(h, TAG_B, 0, NULL);
245: print_otag(h, TAG_I, 0, NULL);
246: break;
247: default:
248: break;
249: }
1.1 schwarze 250: }
251:
1.26 schwarze 252: int
253: html_strlen(const char *cp)
254: {
1.30 schwarze 255: size_t rsz;
256: int skip, sz;
1.26 schwarze 257:
258: /*
259: * Account for escaped sequences within string length
260: * calculations. This follows the logic in term_strlen() as we
261: * must calculate the width of produced strings.
262: * Assume that characters are always width of "1". This is
263: * hacky, but it gets the job done for approximation of widths.
264: */
265:
266: sz = 0;
1.30 schwarze 267: skip = 0;
268: while (1) {
269: rsz = strcspn(cp, "\\");
270: if (rsz) {
271: cp += rsz;
272: if (skip) {
273: skip = 0;
274: rsz--;
275: }
276: sz += rsz;
277: }
278: if ('\0' == *cp)
279: break;
280: cp++;
281: switch (mandoc_escape(&cp, NULL, NULL)) {
1.35 schwarze 282: case ESCAPE_ERROR:
1.26 schwarze 283: return(sz);
1.35 schwarze 284: case ESCAPE_UNICODE:
1.26 schwarze 285: /* FALLTHROUGH */
1.35 schwarze 286: case ESCAPE_NUMBERED:
1.26 schwarze 287: /* FALLTHROUGH */
1.35 schwarze 288: case ESCAPE_SPECIAL:
1.55 schwarze 289: /* FALLTHROUGH */
290: case ESCAPE_OVERSTRIKE:
1.30 schwarze 291: if (skip)
292: skip = 0;
293: else
294: sz++;
295: break;
1.35 schwarze 296: case ESCAPE_SKIPCHAR:
1.30 schwarze 297: skip = 1;
1.26 schwarze 298: break;
299: default:
300: break;
301: }
302: }
1.30 schwarze 303: return(sz);
1.26 schwarze 304: }
1.1 schwarze 305:
1.5 schwarze 306: static int
1.38 schwarze 307: print_escape(char c)
308: {
309:
310: switch (c) {
311: case '<':
312: printf("<");
313: break;
314: case '>':
315: printf(">");
316: break;
317: case '&':
318: printf("&");
319: break;
320: case '"':
321: printf(""");
322: break;
323: case ASCII_NBRSP:
324: putchar('-');
325: break;
326: case ASCII_HYPH:
327: putchar('-');
328: /* FALLTHROUGH */
329: case ASCII_BREAK:
330: break;
331: default:
332: return(0);
333: }
334: return(1);
335: }
336:
337: static int
1.5 schwarze 338: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 339: {
1.4 schwarze 340: size_t sz;
1.26 schwarze 341: int c, len, nospace;
1.5 schwarze 342: const char *seq;
1.26 schwarze 343: enum mandoc_esc esc;
1.37 schwarze 344: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 345: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 346:
347: nospace = 0;
1.1 schwarze 348:
1.26 schwarze 349: while ('\0' != *p) {
1.30 schwarze 350: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
351: h->flags &= ~HTML_SKIPCHAR;
352: p++;
353: continue;
354: }
355:
1.9 schwarze 356: sz = strcspn(p, rejs);
1.4 schwarze 357:
358: fwrite(p, 1, sz, stdout);
1.26 schwarze 359: p += (int)sz;
1.4 schwarze 360:
1.26 schwarze 361: if ('\0' == *p)
362: break;
363:
1.38 schwarze 364: if (print_escape(*p++))
1.33 schwarze 365: continue;
1.4 schwarze 366:
1.26 schwarze 367: esc = mandoc_escape(&p, &seq, &len);
368: if (ESCAPE_ERROR == esc)
369: break;
1.5 schwarze 370:
1.26 schwarze 371: switch (esc) {
1.35 schwarze 372: case ESCAPE_FONT:
1.30 schwarze 373: /* FALLTHROUGH */
1.35 schwarze 374: case ESCAPE_FONTPREV:
1.30 schwarze 375: /* FALLTHROUGH */
1.35 schwarze 376: case ESCAPE_FONTBOLD:
1.30 schwarze 377: /* FALLTHROUGH */
1.35 schwarze 378: case ESCAPE_FONTITALIC:
1.30 schwarze 379: /* FALLTHROUGH */
1.35 schwarze 380: case ESCAPE_FONTBI:
1.31 schwarze 381: /* FALLTHROUGH */
1.35 schwarze 382: case ESCAPE_FONTROMAN:
1.30 schwarze 383: if (0 == norecurse)
384: print_metaf(h, esc);
385: continue;
1.35 schwarze 386: case ESCAPE_SKIPCHAR:
1.30 schwarze 387: h->flags |= HTML_SKIPCHAR;
388: continue;
389: default:
390: break;
391: }
392:
393: if (h->flags & HTML_SKIPCHAR) {
394: h->flags &= ~HTML_SKIPCHAR;
395: continue;
396: }
397:
398: switch (esc) {
1.35 schwarze 399: case ESCAPE_UNICODE:
1.38 schwarze 400: /* Skip past "u" header. */
1.26 schwarze 401: c = mchars_num2uc(seq + 1, len - 1);
402: break;
1.35 schwarze 403: case ESCAPE_NUMBERED:
1.26 schwarze 404: c = mchars_num2char(seq, len);
1.51 schwarze 405: if (c < 0)
406: continue;
1.26 schwarze 407: break;
1.35 schwarze 408: case ESCAPE_SPECIAL:
1.26 schwarze 409: c = mchars_spec2cp(h->symtab, seq, len);
1.51 schwarze 410: if (c <= 0)
411: continue;
1.26 schwarze 412: break;
1.35 schwarze 413: case ESCAPE_NOSPACE:
1.26 schwarze 414: if ('\0' == *p)
415: nospace = 1;
1.49 schwarze 416: continue;
1.55 schwarze 417: case ESCAPE_OVERSTRIKE:
418: if (len == 0)
419: continue;
420: c = seq[len - 1];
421: break;
1.5 schwarze 422: default:
1.49 schwarze 423: continue;
1.5 schwarze 424: }
1.51 schwarze 425: if ((c < 0x20 && c != 0x09) ||
426: (c > 0x7E && c < 0xA0))
1.49 schwarze 427: c = 0xFFFD;
428: if (c > 0x7E)
429: printf("&#%d;", c);
430: else if ( ! print_escape(c))
431: putchar(c);
1.1 schwarze 432: }
1.5 schwarze 433:
434: return(nospace);
1.1 schwarze 435: }
436:
1.6 schwarze 437: static void
438: print_attr(struct html *h, const char *key, const char *val)
439: {
440: printf(" %s=\"", key);
441: (void)print_encode(h, val, 1);
442: putchar('\"');
443: }
444:
1.1 schwarze 445: struct tag *
1.35 schwarze 446: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 447: int sz, const struct htmlpair *p)
448: {
449: int i;
450: struct tag *t;
451:
1.6 schwarze 452: /* Push this tags onto the stack of open scopes. */
453:
1.1 schwarze 454: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 455: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 456: t->tag = tag;
1.2 schwarze 457: t->next = h->tags.head;
458: h->tags.head = t;
1.1 schwarze 459: } else
460: t = NULL;
461:
462: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 463: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
464: /* Manage keeps! */
465: if ( ! (HTML_KEEP & h->flags)) {
466: if (HTML_PREKEEP & h->flags)
467: h->flags |= HTML_KEEP;
468: putchar(' ');
469: } else
470: printf(" ");
471: }
1.1 schwarze 472:
1.13 schwarze 473: if ( ! (h->flags & HTML_NONOSPACE))
474: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 475: else
476: h->flags |= HTML_NOSPACE;
1.13 schwarze 477:
1.6 schwarze 478: /* Print out the tag name and attributes. */
479:
1.1 schwarze 480: printf("<%s", htmltags[tag].name);
1.6 schwarze 481: for (i = 0; i < sz; i++)
482: print_attr(h, htmlattrs[p[i].key], p[i].val);
483:
1.42 schwarze 484: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 485:
486: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.42 schwarze 487: putchar('/');
1.6 schwarze 488:
1.4 schwarze 489: putchar('>');
1.1 schwarze 490:
491: h->flags |= HTML_NOSPACE;
1.18 schwarze 492:
493: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
494: putchar('\n');
495:
1.1 schwarze 496: return(t);
497: }
498:
499: static void
1.54 schwarze 500: print_ctag(struct html *h, struct tag *tag)
1.1 schwarze 501: {
1.35 schwarze 502:
1.54 schwarze 503: /*
504: * Remember to close out and nullify the current
505: * meta-font and table, if applicable.
506: */
507: if (tag == h->metaf)
508: h->metaf = NULL;
509: if (tag == h->tblt)
510: h->tblt = NULL;
511:
512: printf("</%s>", htmltags[tag->tag].name);
513: if (HTML_CLRLINE & htmltags[tag->tag].flags) {
1.1 schwarze 514: h->flags |= HTML_NOSPACE;
1.4 schwarze 515: putchar('\n');
1.35 schwarze 516: }
1.54 schwarze 517:
518: h->tags.head = tag->next;
519: free(tag);
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) {
1.54 schwarze 581: print_ctag(h, tag);
1.1 schwarze 582: if (until && tag == until)
583: return;
584: }
585: }
586:
587: void
588: print_stagq(struct html *h, const struct tag *suntil)
589: {
590: struct tag *tag;
591:
1.2 schwarze 592: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 593: if (suntil && tag == suntil)
594: return;
1.54 schwarze 595: print_ctag(h, tag);
1.1 schwarze 596: }
597: }
1.42 schwarze 598:
599: void
600: print_paragraph(struct html *h)
601: {
602: struct tag *t;
603: struct htmlpair tag;
604:
605: PAIR_CLASS_INIT(&tag, "spacer");
606: t = print_otag(h, TAG_DIV, 1, &tag);
607: print_tagq(h, t);
608: }
609:
1.1 schwarze 610:
611: void
612: bufinit(struct html *h)
613: {
614:
615: h->buf[0] = '\0';
616: h->buflen = 0;
617: }
618:
619: void
620: bufcat_style(struct html *h, const char *key, const char *val)
621: {
622:
623: bufcat(h, key);
1.26 schwarze 624: bufcat(h, ":");
1.1 schwarze 625: bufcat(h, val);
1.26 schwarze 626: bufcat(h, ";");
1.1 schwarze 627: }
628:
629: void
630: bufcat(struct html *h, const char *p)
631: {
1.36 schwarze 632:
633: /*
634: * XXX This is broken and not easy to fix.
635: * When using the -Oincludes option, buffmt_includes()
636: * may pass in strings overrunning BUFSIZ, causing a crash.
637: */
1.1 schwarze 638:
1.26 schwarze 639: h->buflen = strlcat(h->buf, p, BUFSIZ);
640: assert(h->buflen < BUFSIZ);
1.1 schwarze 641: }
642:
643: void
1.26 schwarze 644: bufcat_fmt(struct html *h, const char *fmt, ...)
1.1 schwarze 645: {
646: va_list ap;
647:
648: va_start(ap, fmt);
1.35 schwarze 649: (void)vsnprintf(h->buf + (int)h->buflen,
650: BUFSIZ - h->buflen - 1, fmt, ap);
1.1 schwarze 651: va_end(ap);
652: h->buflen = strlen(h->buf);
653: }
654:
1.26 schwarze 655: static void
1.1 schwarze 656: bufncat(struct html *h, const char *p, size_t sz)
657: {
658:
1.26 schwarze 659: assert(h->buflen + sz + 1 < BUFSIZ);
660: strncat(h->buf, p, sz);
1.1 schwarze 661: h->buflen += sz;
662: }
663:
664: void
665: buffmt_includes(struct html *h, const char *name)
666: {
667: const char *p, *pp;
668:
669: pp = h->base_includes;
1.35 schwarze 670:
1.26 schwarze 671: bufinit(h);
1.1 schwarze 672: while (NULL != (p = strchr(pp, '%'))) {
673: bufncat(h, pp, (size_t)(p - pp));
674: switch (*(p + 1)) {
1.35 schwarze 675: case'I':
1.1 schwarze 676: bufcat(h, name);
677: break;
678: default:
679: bufncat(h, p, 2);
680: break;
681: }
682: pp = p + 2;
683: }
684: if (pp)
685: bufcat(h, pp);
686: }
687:
688: void
1.35 schwarze 689: buffmt_man(struct html *h, const char *name, const char *sec)
1.1 schwarze 690: {
691: const char *p, *pp;
692:
693: pp = h->base_man;
1.35 schwarze 694:
1.26 schwarze 695: bufinit(h);
1.1 schwarze 696: while (NULL != (p = strchr(pp, '%'))) {
697: bufncat(h, pp, (size_t)(p - pp));
698: switch (*(p + 1)) {
1.35 schwarze 699: case 'S':
1.1 schwarze 700: bufcat(h, sec ? sec : "1");
701: break;
1.35 schwarze 702: case 'N':
1.32 schwarze 703: bufcat_fmt(h, "%s", name);
1.1 schwarze 704: break;
705: default:
706: bufncat(h, p, 2);
707: break;
708: }
709: pp = p + 2;
710: }
711: if (pp)
712: bufcat(h, pp);
713: }
714:
715: void
716: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
717: {
718: double v;
719:
720: v = su->scale;
1.26 schwarze 721: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
722: v = 1.0;
1.40 schwarze 723: else if (SCALE_BU == su->unit)
724: v /= 24.0;
1.1 schwarze 725:
1.26 schwarze 726: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.1 schwarze 727: }
728:
1.3 schwarze 729: void
1.26 schwarze 730: bufcat_id(struct html *h, const char *src)
1.3 schwarze 731: {
732:
733: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
734:
1.26 schwarze 735: while ('\0' != *src)
736: bufcat_fmt(h, "%.2x", *src++);
1.3 schwarze 737: }
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