Annotation of src/usr.bin/mandoc/html.c, Revision 1.60
1.60 ! schwarze 1: /* $OpenBSD: html.c,v 1.59 2015/10/12 00:07:27 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:
1.58 schwarze 146: return h;
1.1 schwarze 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:
219: case ESCAPE_FONTROMAN:
1.5 schwarze 220: font = HTMLFONT_NONE;
221: break;
222: default:
223: abort();
1.1 schwarze 224: }
225:
1.20 schwarze 226: if (h->metaf) {
227: print_tagq(h, h->metaf);
228: h->metaf = NULL;
229: }
230:
231: h->metal = h->metac;
232: h->metac = font;
233:
1.31 schwarze 234: switch (font) {
1.35 schwarze 235: case HTMLFONT_ITALIC:
1.31 schwarze 236: h->metaf = print_otag(h, TAG_I, 0, NULL);
237: break;
1.35 schwarze 238: case HTMLFONT_BOLD:
1.31 schwarze 239: h->metaf = print_otag(h, TAG_B, 0, NULL);
240: break;
1.35 schwarze 241: case HTMLFONT_BI:
1.31 schwarze 242: h->metaf = print_otag(h, TAG_B, 0, NULL);
243: print_otag(h, TAG_I, 0, NULL);
244: break;
245: default:
246: break;
247: }
1.1 schwarze 248: }
249:
1.26 schwarze 250: int
251: html_strlen(const char *cp)
252: {
1.30 schwarze 253: size_t rsz;
254: int skip, sz;
1.26 schwarze 255:
256: /*
257: * Account for escaped sequences within string length
258: * calculations. This follows the logic in term_strlen() as we
259: * must calculate the width of produced strings.
260: * Assume that characters are always width of "1". This is
261: * hacky, but it gets the job done for approximation of widths.
262: */
263:
264: sz = 0;
1.30 schwarze 265: skip = 0;
266: while (1) {
267: rsz = strcspn(cp, "\\");
268: if (rsz) {
269: cp += rsz;
270: if (skip) {
271: skip = 0;
272: rsz--;
273: }
274: sz += rsz;
275: }
276: if ('\0' == *cp)
277: break;
278: cp++;
279: switch (mandoc_escape(&cp, NULL, NULL)) {
1.35 schwarze 280: case ESCAPE_ERROR:
1.58 schwarze 281: return sz;
1.35 schwarze 282: case ESCAPE_UNICODE:
283: case ESCAPE_NUMBERED:
284: case ESCAPE_SPECIAL:
1.55 schwarze 285: case ESCAPE_OVERSTRIKE:
1.30 schwarze 286: if (skip)
287: skip = 0;
288: else
289: sz++;
290: break;
1.35 schwarze 291: case ESCAPE_SKIPCHAR:
1.30 schwarze 292: skip = 1;
1.26 schwarze 293: break;
294: default:
295: break;
296: }
297: }
1.58 schwarze 298: return sz;
1.26 schwarze 299: }
1.1 schwarze 300:
1.5 schwarze 301: static int
1.38 schwarze 302: print_escape(char c)
303: {
304:
305: switch (c) {
306: case '<':
307: printf("<");
308: break;
309: case '>':
310: printf(">");
311: break;
312: case '&':
313: printf("&");
314: break;
315: case '"':
316: printf(""");
317: break;
318: case ASCII_NBRSP:
1.60 ! schwarze 319: printf(" ");
1.38 schwarze 320: break;
321: case ASCII_HYPH:
322: putchar('-');
1.59 schwarze 323: break;
1.38 schwarze 324: case ASCII_BREAK:
325: break;
326: default:
1.58 schwarze 327: return 0;
1.38 schwarze 328: }
1.58 schwarze 329: return 1;
1.38 schwarze 330: }
331:
332: static int
1.5 schwarze 333: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 334: {
1.4 schwarze 335: size_t sz;
1.26 schwarze 336: int c, len, nospace;
1.5 schwarze 337: const char *seq;
1.26 schwarze 338: enum mandoc_esc esc;
1.37 schwarze 339: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 340: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 341:
342: nospace = 0;
1.1 schwarze 343:
1.26 schwarze 344: while ('\0' != *p) {
1.30 schwarze 345: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
346: h->flags &= ~HTML_SKIPCHAR;
347: p++;
348: continue;
349: }
350:
1.9 schwarze 351: sz = strcspn(p, rejs);
1.4 schwarze 352:
353: fwrite(p, 1, sz, stdout);
1.26 schwarze 354: p += (int)sz;
1.4 schwarze 355:
1.26 schwarze 356: if ('\0' == *p)
357: break;
358:
1.38 schwarze 359: if (print_escape(*p++))
1.33 schwarze 360: continue;
1.4 schwarze 361:
1.26 schwarze 362: esc = mandoc_escape(&p, &seq, &len);
363: if (ESCAPE_ERROR == esc)
364: break;
1.5 schwarze 365:
1.26 schwarze 366: switch (esc) {
1.35 schwarze 367: case ESCAPE_FONT:
368: case ESCAPE_FONTPREV:
369: case ESCAPE_FONTBOLD:
370: case ESCAPE_FONTITALIC:
371: case ESCAPE_FONTBI:
372: case ESCAPE_FONTROMAN:
1.30 schwarze 373: if (0 == norecurse)
374: print_metaf(h, esc);
375: continue;
1.35 schwarze 376: case ESCAPE_SKIPCHAR:
1.30 schwarze 377: h->flags |= HTML_SKIPCHAR;
378: continue;
379: default:
380: break;
381: }
382:
383: if (h->flags & HTML_SKIPCHAR) {
384: h->flags &= ~HTML_SKIPCHAR;
385: continue;
386: }
387:
388: switch (esc) {
1.35 schwarze 389: case ESCAPE_UNICODE:
1.38 schwarze 390: /* Skip past "u" header. */
1.26 schwarze 391: c = mchars_num2uc(seq + 1, len - 1);
392: break;
1.35 schwarze 393: case ESCAPE_NUMBERED:
1.26 schwarze 394: c = mchars_num2char(seq, len);
1.51 schwarze 395: if (c < 0)
396: continue;
1.26 schwarze 397: break;
1.35 schwarze 398: case ESCAPE_SPECIAL:
1.26 schwarze 399: c = mchars_spec2cp(h->symtab, seq, len);
1.51 schwarze 400: if (c <= 0)
401: continue;
1.26 schwarze 402: break;
1.35 schwarze 403: case ESCAPE_NOSPACE:
1.26 schwarze 404: if ('\0' == *p)
405: nospace = 1;
1.49 schwarze 406: continue;
1.55 schwarze 407: case ESCAPE_OVERSTRIKE:
408: if (len == 0)
409: continue;
410: c = seq[len - 1];
411: break;
1.5 schwarze 412: default:
1.49 schwarze 413: continue;
1.5 schwarze 414: }
1.51 schwarze 415: if ((c < 0x20 && c != 0x09) ||
416: (c > 0x7E && c < 0xA0))
1.49 schwarze 417: c = 0xFFFD;
418: if (c > 0x7E)
419: printf("&#%d;", c);
420: else if ( ! print_escape(c))
421: putchar(c);
1.1 schwarze 422: }
1.5 schwarze 423:
1.58 schwarze 424: return nospace;
1.1 schwarze 425: }
426:
1.6 schwarze 427: static void
428: print_attr(struct html *h, const char *key, const char *val)
429: {
430: printf(" %s=\"", key);
431: (void)print_encode(h, val, 1);
432: putchar('\"');
433: }
434:
1.1 schwarze 435: struct tag *
1.35 schwarze 436: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 437: int sz, const struct htmlpair *p)
438: {
439: int i;
440: struct tag *t;
441:
1.6 schwarze 442: /* Push this tags onto the stack of open scopes. */
443:
1.1 schwarze 444: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 445: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 446: t->tag = tag;
1.2 schwarze 447: t->next = h->tags.head;
448: h->tags.head = t;
1.1 schwarze 449: } else
450: t = NULL;
451:
452: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 453: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
454: /* Manage keeps! */
455: if ( ! (HTML_KEEP & h->flags)) {
456: if (HTML_PREKEEP & h->flags)
457: h->flags |= HTML_KEEP;
458: putchar(' ');
459: } else
460: printf(" ");
461: }
1.1 schwarze 462:
1.13 schwarze 463: if ( ! (h->flags & HTML_NONOSPACE))
464: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 465: else
466: h->flags |= HTML_NOSPACE;
1.13 schwarze 467:
1.6 schwarze 468: /* Print out the tag name and attributes. */
469:
1.1 schwarze 470: printf("<%s", htmltags[tag].name);
1.6 schwarze 471: for (i = 0; i < sz; i++)
472: print_attr(h, htmlattrs[p[i].key], p[i].val);
473:
1.42 schwarze 474: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 475:
476: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.42 schwarze 477: putchar('/');
1.6 schwarze 478:
1.4 schwarze 479: putchar('>');
1.1 schwarze 480:
481: h->flags |= HTML_NOSPACE;
1.18 schwarze 482:
483: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
484: putchar('\n');
485:
1.58 schwarze 486: return t;
1.1 schwarze 487: }
488:
489: static void
1.54 schwarze 490: print_ctag(struct html *h, struct tag *tag)
1.1 schwarze 491: {
1.35 schwarze 492:
1.54 schwarze 493: /*
494: * Remember to close out and nullify the current
495: * meta-font and table, if applicable.
496: */
497: if (tag == h->metaf)
498: h->metaf = NULL;
499: if (tag == h->tblt)
500: h->tblt = NULL;
501:
502: printf("</%s>", htmltags[tag->tag].name);
503: if (HTML_CLRLINE & htmltags[tag->tag].flags) {
1.1 schwarze 504: h->flags |= HTML_NOSPACE;
1.4 schwarze 505: putchar('\n');
1.35 schwarze 506: }
1.54 schwarze 507:
508: h->tags.head = tag->next;
509: free(tag);
1.1 schwarze 510: }
511:
512: void
1.6 schwarze 513: print_gen_decls(struct html *h)
514: {
515:
1.42 schwarze 516: puts("<!DOCTYPE html>");
1.1 schwarze 517: }
518:
519: void
1.12 schwarze 520: print_text(struct html *h, const char *word)
1.1 schwarze 521: {
522:
1.12 schwarze 523: if ( ! (HTML_NOSPACE & h->flags)) {
524: /* Manage keeps! */
525: if ( ! (HTML_KEEP & h->flags)) {
526: if (HTML_PREKEEP & h->flags)
527: h->flags |= HTML_KEEP;
528: putchar(' ');
529: } else
530: printf(" ");
531: }
1.1 schwarze 532:
1.20 schwarze 533: assert(NULL == h->metaf);
1.31 schwarze 534: switch (h->metac) {
1.35 schwarze 535: case HTMLFONT_ITALIC:
1.31 schwarze 536: h->metaf = print_otag(h, TAG_I, 0, NULL);
537: break;
1.35 schwarze 538: case HTMLFONT_BOLD:
1.31 schwarze 539: h->metaf = print_otag(h, TAG_B, 0, NULL);
540: break;
1.35 schwarze 541: case HTMLFONT_BI:
1.31 schwarze 542: h->metaf = print_otag(h, TAG_B, 0, NULL);
543: print_otag(h, TAG_I, 0, NULL);
544: break;
545: default:
546: break;
547: }
1.20 schwarze 548:
1.12 schwarze 549: assert(word);
1.28 schwarze 550: if ( ! print_encode(h, word, 0)) {
1.13 schwarze 551: if ( ! (h->flags & HTML_NONOSPACE))
552: h->flags &= ~HTML_NOSPACE;
1.53 schwarze 553: h->flags &= ~HTML_NONEWLINE;
1.28 schwarze 554: } else
1.53 schwarze 555: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.20 schwarze 556:
557: if (h->metaf) {
558: print_tagq(h, h->metaf);
559: h->metaf = NULL;
560: }
1.17 schwarze 561:
562: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 563: }
564:
565: void
566: print_tagq(struct html *h, const struct tag *until)
567: {
568: struct tag *tag;
569:
1.2 schwarze 570: while ((tag = h->tags.head) != NULL) {
1.54 schwarze 571: print_ctag(h, tag);
1.1 schwarze 572: if (until && tag == until)
573: return;
574: }
575: }
576:
577: void
578: print_stagq(struct html *h, const struct tag *suntil)
579: {
580: struct tag *tag;
581:
1.2 schwarze 582: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 583: if (suntil && tag == suntil)
584: return;
1.54 schwarze 585: print_ctag(h, tag);
1.1 schwarze 586: }
587: }
1.42 schwarze 588:
589: void
590: print_paragraph(struct html *h)
591: {
592: struct tag *t;
593: struct htmlpair tag;
594:
595: PAIR_CLASS_INIT(&tag, "spacer");
596: t = print_otag(h, TAG_DIV, 1, &tag);
597: print_tagq(h, t);
598: }
599:
1.1 schwarze 600:
601: void
602: bufinit(struct html *h)
603: {
604:
605: h->buf[0] = '\0';
606: h->buflen = 0;
607: }
608:
609: void
610: bufcat_style(struct html *h, const char *key, const char *val)
611: {
612:
613: bufcat(h, key);
1.26 schwarze 614: bufcat(h, ":");
1.1 schwarze 615: bufcat(h, val);
1.26 schwarze 616: bufcat(h, ";");
1.1 schwarze 617: }
618:
619: void
620: bufcat(struct html *h, const char *p)
621: {
1.36 schwarze 622:
623: /*
624: * XXX This is broken and not easy to fix.
625: * When using the -Oincludes option, buffmt_includes()
626: * may pass in strings overrunning BUFSIZ, causing a crash.
627: */
1.1 schwarze 628:
1.26 schwarze 629: h->buflen = strlcat(h->buf, p, BUFSIZ);
630: assert(h->buflen < BUFSIZ);
1.1 schwarze 631: }
632:
633: void
1.26 schwarze 634: bufcat_fmt(struct html *h, const char *fmt, ...)
1.1 schwarze 635: {
636: va_list ap;
637:
638: va_start(ap, fmt);
1.35 schwarze 639: (void)vsnprintf(h->buf + (int)h->buflen,
640: BUFSIZ - h->buflen - 1, fmt, ap);
1.1 schwarze 641: va_end(ap);
642: h->buflen = strlen(h->buf);
643: }
644:
1.26 schwarze 645: static void
1.1 schwarze 646: bufncat(struct html *h, const char *p, size_t sz)
647: {
648:
1.26 schwarze 649: assert(h->buflen + sz + 1 < BUFSIZ);
650: strncat(h->buf, p, sz);
1.1 schwarze 651: h->buflen += sz;
652: }
653:
654: void
655: buffmt_includes(struct html *h, const char *name)
656: {
657: const char *p, *pp;
658:
659: pp = h->base_includes;
1.35 schwarze 660:
1.26 schwarze 661: bufinit(h);
1.1 schwarze 662: while (NULL != (p = strchr(pp, '%'))) {
663: bufncat(h, pp, (size_t)(p - pp));
664: switch (*(p + 1)) {
1.35 schwarze 665: case'I':
1.1 schwarze 666: bufcat(h, name);
667: break;
668: default:
669: bufncat(h, p, 2);
670: break;
671: }
672: pp = p + 2;
673: }
674: if (pp)
675: bufcat(h, pp);
676: }
677:
678: void
1.35 schwarze 679: buffmt_man(struct html *h, const char *name, const char *sec)
1.1 schwarze 680: {
681: const char *p, *pp;
682:
683: pp = h->base_man;
1.35 schwarze 684:
1.26 schwarze 685: bufinit(h);
1.1 schwarze 686: while (NULL != (p = strchr(pp, '%'))) {
687: bufncat(h, pp, (size_t)(p - pp));
688: switch (*(p + 1)) {
1.35 schwarze 689: case 'S':
1.1 schwarze 690: bufcat(h, sec ? sec : "1");
691: break;
1.35 schwarze 692: case 'N':
1.32 schwarze 693: bufcat_fmt(h, "%s", name);
1.1 schwarze 694: break;
695: default:
696: bufncat(h, p, 2);
697: break;
698: }
699: pp = p + 2;
700: }
701: if (pp)
702: bufcat(h, pp);
703: }
704:
705: void
706: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
707: {
708: double v;
709:
710: v = su->scale;
1.26 schwarze 711: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
712: v = 1.0;
1.40 schwarze 713: else if (SCALE_BU == su->unit)
714: v /= 24.0;
1.1 schwarze 715:
1.26 schwarze 716: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.1 schwarze 717: }
718:
1.3 schwarze 719: void
1.26 schwarze 720: bufcat_id(struct html *h, const char *src)
1.3 schwarze 721: {
722:
723: /* Cf. <http://www.w3.org/TR/html4/types.html#h-6.2>. */
724:
1.26 schwarze 725: while ('\0' != *src)
726: bufcat_fmt(h, "%.2x", *src++);
1.3 schwarze 727: }
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