Annotation of src/usr.bin/mandoc/html.c, Revision 1.63
1.63 ! schwarze 1: /* $OpenBSD: html.c,v 1.62 2015/12/25 20:43:04 bentley 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 *
1.61 schwarze 131: html_alloc(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;
1.56 schwarze 138: h->style = outopts->style;
139: h->base_man = outopts->man;
140: h->base_includes = outopts->includes;
141: if (outopts->fragment)
142: h->oflags |= HTML_FRAGMENT;
1.1 schwarze 143:
1.58 schwarze 144: return h;
1.1 schwarze 145: }
146:
147: void
148: html_free(void *p)
149: {
150: struct tag *tag;
151: struct html *h;
152:
153: h = (struct html *)p;
154:
1.2 schwarze 155: while ((tag = h->tags.head) != NULL) {
1.35 schwarze 156: h->tags.head = tag->next;
1.1 schwarze 157: free(tag);
158: }
159:
160: free(h);
161: }
162:
163: void
164: print_gen_head(struct html *h)
165: {
166: struct htmlpair tag[4];
1.42 schwarze 167: struct tag *t;
168:
169: tag[0].key = ATTR_CHARSET;
170: tag[0].val = "utf-8";
171: print_otag(h, TAG_META, 1, tag);
1.1 schwarze 172:
1.42 schwarze 173: /*
174: * Print a default style-sheet.
175: */
176: t = print_otag(h, TAG_STYLE, 0, NULL);
177: print_text(h, "table.head, table.foot { width: 100%; }\n"
178: "td.head-rtitle, td.foot-os { text-align: right; }\n"
179: "td.head-vol { text-align: center; }\n"
180: "table.foot td { width: 50%; }\n"
181: "table.head td { width: 33%; }\n"
182: "div.spacer { margin: 1em 0; }\n");
183: print_tagq(h, t);
1.1 schwarze 184:
185: if (h->style) {
186: tag[0].key = ATTR_REL;
187: tag[0].val = "stylesheet";
188: tag[1].key = ATTR_HREF;
189: tag[1].val = h->style;
190: tag[2].key = ATTR_TYPE;
191: tag[2].val = "text/css";
192: tag[3].key = ATTR_MEDIA;
193: tag[3].val = "all";
194: print_otag(h, TAG_LINK, 4, tag);
195: }
196: }
197:
1.5 schwarze 198: static void
1.26 schwarze 199: print_metaf(struct html *h, enum mandoc_esc deco)
1.5 schwarze 200: {
201: enum htmlfont font;
1.1 schwarze 202:
1.5 schwarze 203: switch (deco) {
1.35 schwarze 204: case ESCAPE_FONTPREV:
1.5 schwarze 205: font = h->metal;
206: break;
1.35 schwarze 207: case ESCAPE_FONTITALIC:
1.5 schwarze 208: font = HTMLFONT_ITALIC;
209: break;
1.35 schwarze 210: case ESCAPE_FONTBOLD:
1.5 schwarze 211: font = HTMLFONT_BOLD;
212: break;
1.35 schwarze 213: case ESCAPE_FONTBI:
1.31 schwarze 214: font = HTMLFONT_BI;
215: break;
1.35 schwarze 216: case ESCAPE_FONT:
217: case ESCAPE_FONTROMAN:
1.5 schwarze 218: font = HTMLFONT_NONE;
219: break;
220: default:
221: abort();
1.1 schwarze 222: }
223:
1.20 schwarze 224: if (h->metaf) {
225: print_tagq(h, h->metaf);
226: h->metaf = NULL;
227: }
228:
229: h->metal = h->metac;
230: h->metac = font;
231:
1.31 schwarze 232: switch (font) {
1.35 schwarze 233: case HTMLFONT_ITALIC:
1.31 schwarze 234: h->metaf = print_otag(h, TAG_I, 0, NULL);
235: break;
1.35 schwarze 236: case HTMLFONT_BOLD:
1.31 schwarze 237: h->metaf = print_otag(h, TAG_B, 0, NULL);
238: break;
1.35 schwarze 239: case HTMLFONT_BI:
1.31 schwarze 240: h->metaf = print_otag(h, TAG_B, 0, NULL);
241: print_otag(h, TAG_I, 0, NULL);
242: break;
243: default:
244: break;
245: }
1.1 schwarze 246: }
247:
1.26 schwarze 248: int
249: html_strlen(const char *cp)
250: {
1.30 schwarze 251: size_t rsz;
252: int skip, sz;
1.26 schwarze 253:
254: /*
255: * Account for escaped sequences within string length
256: * calculations. This follows the logic in term_strlen() as we
257: * must calculate the width of produced strings.
258: * Assume that characters are always width of "1". This is
259: * hacky, but it gets the job done for approximation of widths.
260: */
261:
262: sz = 0;
1.30 schwarze 263: skip = 0;
264: while (1) {
265: rsz = strcspn(cp, "\\");
266: if (rsz) {
267: cp += rsz;
268: if (skip) {
269: skip = 0;
270: rsz--;
271: }
272: sz += rsz;
273: }
274: if ('\0' == *cp)
275: break;
276: cp++;
277: switch (mandoc_escape(&cp, NULL, NULL)) {
1.35 schwarze 278: case ESCAPE_ERROR:
1.58 schwarze 279: return sz;
1.35 schwarze 280: case ESCAPE_UNICODE:
281: case ESCAPE_NUMBERED:
282: case ESCAPE_SPECIAL:
1.55 schwarze 283: case ESCAPE_OVERSTRIKE:
1.30 schwarze 284: if (skip)
285: skip = 0;
286: else
287: sz++;
288: break;
1.35 schwarze 289: case ESCAPE_SKIPCHAR:
1.30 schwarze 290: skip = 1;
1.26 schwarze 291: break;
292: default:
293: break;
294: }
295: }
1.58 schwarze 296: return sz;
1.26 schwarze 297: }
1.1 schwarze 298:
1.5 schwarze 299: static int
1.38 schwarze 300: print_escape(char c)
301: {
302:
303: switch (c) {
304: case '<':
305: printf("<");
306: break;
307: case '>':
308: printf(">");
309: break;
310: case '&':
311: printf("&");
312: break;
313: case '"':
314: printf(""");
315: break;
316: case ASCII_NBRSP:
1.60 schwarze 317: printf(" ");
1.38 schwarze 318: break;
319: case ASCII_HYPH:
320: putchar('-');
1.59 schwarze 321: break;
1.38 schwarze 322: case ASCII_BREAK:
323: break;
324: default:
1.58 schwarze 325: return 0;
1.38 schwarze 326: }
1.58 schwarze 327: return 1;
1.38 schwarze 328: }
329:
330: static int
1.5 schwarze 331: print_encode(struct html *h, const char *p, int norecurse)
1.1 schwarze 332: {
1.4 schwarze 333: size_t sz;
1.26 schwarze 334: int c, len, nospace;
1.5 schwarze 335: const char *seq;
1.26 schwarze 336: enum mandoc_esc esc;
1.37 schwarze 337: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 338: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 339:
340: nospace = 0;
1.1 schwarze 341:
1.26 schwarze 342: while ('\0' != *p) {
1.30 schwarze 343: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
344: h->flags &= ~HTML_SKIPCHAR;
345: p++;
346: continue;
347: }
348:
1.9 schwarze 349: sz = strcspn(p, rejs);
1.4 schwarze 350:
351: fwrite(p, 1, sz, stdout);
1.26 schwarze 352: p += (int)sz;
1.4 schwarze 353:
1.26 schwarze 354: if ('\0' == *p)
355: break;
356:
1.38 schwarze 357: if (print_escape(*p++))
1.33 schwarze 358: continue;
1.4 schwarze 359:
1.26 schwarze 360: esc = mandoc_escape(&p, &seq, &len);
361: if (ESCAPE_ERROR == esc)
362: break;
1.5 schwarze 363:
1.26 schwarze 364: switch (esc) {
1.35 schwarze 365: case ESCAPE_FONT:
366: case ESCAPE_FONTPREV:
367: case ESCAPE_FONTBOLD:
368: case ESCAPE_FONTITALIC:
369: case ESCAPE_FONTBI:
370: case ESCAPE_FONTROMAN:
1.30 schwarze 371: if (0 == norecurse)
372: print_metaf(h, esc);
373: continue;
1.35 schwarze 374: case ESCAPE_SKIPCHAR:
1.30 schwarze 375: h->flags |= HTML_SKIPCHAR;
376: continue;
377: default:
378: break;
379: }
380:
381: if (h->flags & HTML_SKIPCHAR) {
382: h->flags &= ~HTML_SKIPCHAR;
383: continue;
384: }
385:
386: switch (esc) {
1.35 schwarze 387: case ESCAPE_UNICODE:
1.38 schwarze 388: /* Skip past "u" header. */
1.26 schwarze 389: c = mchars_num2uc(seq + 1, len - 1);
390: break;
1.35 schwarze 391: case ESCAPE_NUMBERED:
1.26 schwarze 392: c = mchars_num2char(seq, len);
1.51 schwarze 393: if (c < 0)
394: continue;
1.26 schwarze 395: break;
1.35 schwarze 396: case ESCAPE_SPECIAL:
1.61 schwarze 397: c = mchars_spec2cp(seq, len);
1.51 schwarze 398: if (c <= 0)
399: continue;
1.26 schwarze 400: break;
1.35 schwarze 401: case ESCAPE_NOSPACE:
1.26 schwarze 402: if ('\0' == *p)
403: nospace = 1;
1.49 schwarze 404: continue;
1.55 schwarze 405: case ESCAPE_OVERSTRIKE:
406: if (len == 0)
407: continue;
408: c = seq[len - 1];
409: break;
1.5 schwarze 410: default:
1.49 schwarze 411: continue;
1.5 schwarze 412: }
1.51 schwarze 413: if ((c < 0x20 && c != 0x09) ||
414: (c > 0x7E && c < 0xA0))
1.49 schwarze 415: c = 0xFFFD;
416: if (c > 0x7E)
417: printf("&#%d;", c);
418: else if ( ! print_escape(c))
419: putchar(c);
1.1 schwarze 420: }
1.5 schwarze 421:
1.58 schwarze 422: return nospace;
1.1 schwarze 423: }
424:
1.6 schwarze 425: static void
426: print_attr(struct html *h, const char *key, const char *val)
427: {
428: printf(" %s=\"", key);
429: (void)print_encode(h, val, 1);
430: putchar('\"');
431: }
432:
1.1 schwarze 433: struct tag *
1.35 schwarze 434: print_otag(struct html *h, enum htmltag tag,
1.1 schwarze 435: int sz, const struct htmlpair *p)
436: {
437: int i;
438: struct tag *t;
439:
1.6 schwarze 440: /* Push this tags onto the stack of open scopes. */
441:
1.1 schwarze 442: if ( ! (HTML_NOSTACK & htmltags[tag].flags)) {
1.24 schwarze 443: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 444: t->tag = tag;
1.2 schwarze 445: t->next = h->tags.head;
446: h->tags.head = t;
1.1 schwarze 447: } else
448: t = NULL;
449:
450: if ( ! (HTML_NOSPACE & h->flags))
1.12 schwarze 451: if ( ! (HTML_CLRLINE & htmltags[tag].flags)) {
452: /* Manage keeps! */
453: if ( ! (HTML_KEEP & h->flags)) {
454: if (HTML_PREKEEP & h->flags)
455: h->flags |= HTML_KEEP;
456: putchar(' ');
457: } else
458: printf(" ");
459: }
1.1 schwarze 460:
1.13 schwarze 461: if ( ! (h->flags & HTML_NONOSPACE))
462: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 463: else
464: h->flags |= HTML_NOSPACE;
1.13 schwarze 465:
1.6 schwarze 466: /* Print out the tag name and attributes. */
467:
1.1 schwarze 468: printf("<%s", htmltags[tag].name);
1.6 schwarze 469: for (i = 0; i < sz; i++)
470: print_attr(h, htmlattrs[p[i].key], p[i].val);
471:
1.42 schwarze 472: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 473:
474: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.42 schwarze 475: putchar('/');
1.6 schwarze 476:
1.4 schwarze 477: putchar('>');
1.1 schwarze 478:
479: h->flags |= HTML_NOSPACE;
1.18 schwarze 480:
481: if ((HTML_AUTOCLOSE | HTML_CLRLINE) & htmltags[tag].flags)
482: putchar('\n');
483:
1.58 schwarze 484: return t;
1.1 schwarze 485: }
486:
487: static void
1.54 schwarze 488: print_ctag(struct html *h, struct tag *tag)
1.1 schwarze 489: {
1.35 schwarze 490:
1.54 schwarze 491: /*
492: * Remember to close out and nullify the current
493: * meta-font and table, if applicable.
494: */
495: if (tag == h->metaf)
496: h->metaf = NULL;
497: if (tag == h->tblt)
498: h->tblt = NULL;
499:
500: printf("</%s>", htmltags[tag->tag].name);
501: if (HTML_CLRLINE & htmltags[tag->tag].flags) {
1.1 schwarze 502: h->flags |= HTML_NOSPACE;
1.4 schwarze 503: putchar('\n');
1.35 schwarze 504: }
1.54 schwarze 505:
506: h->tags.head = tag->next;
507: free(tag);
1.1 schwarze 508: }
509:
510: void
1.6 schwarze 511: print_gen_decls(struct html *h)
512: {
513:
1.42 schwarze 514: puts("<!DOCTYPE html>");
1.1 schwarze 515: }
516:
517: void
1.12 schwarze 518: print_text(struct html *h, const char *word)
1.1 schwarze 519: {
520:
1.12 schwarze 521: if ( ! (HTML_NOSPACE & h->flags)) {
522: /* Manage keeps! */
523: if ( ! (HTML_KEEP & h->flags)) {
524: if (HTML_PREKEEP & h->flags)
525: h->flags |= HTML_KEEP;
526: putchar(' ');
527: } else
528: printf(" ");
529: }
1.1 schwarze 530:
1.20 schwarze 531: assert(NULL == h->metaf);
1.31 schwarze 532: switch (h->metac) {
1.35 schwarze 533: case HTMLFONT_ITALIC:
1.31 schwarze 534: h->metaf = print_otag(h, TAG_I, 0, NULL);
535: break;
1.35 schwarze 536: case HTMLFONT_BOLD:
1.31 schwarze 537: h->metaf = print_otag(h, TAG_B, 0, NULL);
538: break;
1.35 schwarze 539: case HTMLFONT_BI:
1.31 schwarze 540: h->metaf = print_otag(h, TAG_B, 0, NULL);
541: print_otag(h, TAG_I, 0, NULL);
542: break;
543: default:
544: break;
545: }
1.20 schwarze 546:
1.12 schwarze 547: assert(word);
1.28 schwarze 548: if ( ! print_encode(h, word, 0)) {
1.13 schwarze 549: if ( ! (h->flags & HTML_NONOSPACE))
550: h->flags &= ~HTML_NOSPACE;
1.53 schwarze 551: h->flags &= ~HTML_NONEWLINE;
1.28 schwarze 552: } else
1.53 schwarze 553: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.20 schwarze 554:
555: if (h->metaf) {
556: print_tagq(h, h->metaf);
557: h->metaf = NULL;
558: }
1.17 schwarze 559:
560: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 561: }
562:
563: void
564: print_tagq(struct html *h, const struct tag *until)
565: {
566: struct tag *tag;
567:
1.2 schwarze 568: while ((tag = h->tags.head) != NULL) {
1.54 schwarze 569: print_ctag(h, tag);
1.1 schwarze 570: if (until && tag == until)
571: return;
572: }
573: }
574:
575: void
576: print_stagq(struct html *h, const struct tag *suntil)
577: {
578: struct tag *tag;
579:
1.2 schwarze 580: while ((tag = h->tags.head) != NULL) {
1.1 schwarze 581: if (suntil && tag == suntil)
582: return;
1.54 schwarze 583: print_ctag(h, tag);
1.1 schwarze 584: }
585: }
1.42 schwarze 586:
587: void
588: print_paragraph(struct html *h)
589: {
590: struct tag *t;
591: struct htmlpair tag;
592:
593: PAIR_CLASS_INIT(&tag, "spacer");
594: t = print_otag(h, TAG_DIV, 1, &tag);
595: print_tagq(h, t);
596: }
597:
1.1 schwarze 598:
599: void
600: bufinit(struct html *h)
601: {
602:
603: h->buf[0] = '\0';
604: h->buflen = 0;
605: }
606:
607: void
608: bufcat_style(struct html *h, const char *key, const char *val)
609: {
610:
611: bufcat(h, key);
1.26 schwarze 612: bufcat(h, ":");
1.1 schwarze 613: bufcat(h, val);
1.26 schwarze 614: bufcat(h, ";");
1.1 schwarze 615: }
616:
617: void
618: bufcat(struct html *h, const char *p)
619: {
1.36 schwarze 620:
621: /*
622: * XXX This is broken and not easy to fix.
623: * When using the -Oincludes option, buffmt_includes()
624: * may pass in strings overrunning BUFSIZ, causing a crash.
625: */
1.1 schwarze 626:
1.26 schwarze 627: h->buflen = strlcat(h->buf, p, BUFSIZ);
628: assert(h->buflen < BUFSIZ);
1.1 schwarze 629: }
630:
631: void
1.26 schwarze 632: bufcat_fmt(struct html *h, const char *fmt, ...)
1.1 schwarze 633: {
634: va_list ap;
635:
636: va_start(ap, fmt);
1.35 schwarze 637: (void)vsnprintf(h->buf + (int)h->buflen,
638: BUFSIZ - h->buflen - 1, fmt, ap);
1.1 schwarze 639: va_end(ap);
640: h->buflen = strlen(h->buf);
641: }
642:
1.26 schwarze 643: static void
1.1 schwarze 644: bufncat(struct html *h, const char *p, size_t sz)
645: {
646:
1.26 schwarze 647: assert(h->buflen + sz + 1 < BUFSIZ);
648: strncat(h->buf, p, sz);
1.1 schwarze 649: h->buflen += sz;
650: }
651:
652: void
653: buffmt_includes(struct html *h, const char *name)
654: {
655: const char *p, *pp;
656:
657: pp = h->base_includes;
1.35 schwarze 658:
1.26 schwarze 659: bufinit(h);
1.1 schwarze 660: while (NULL != (p = strchr(pp, '%'))) {
661: bufncat(h, pp, (size_t)(p - pp));
662: switch (*(p + 1)) {
1.63 ! schwarze 663: case 'I':
1.1 schwarze 664: bufcat(h, name);
665: break;
666: default:
667: bufncat(h, p, 2);
668: break;
669: }
670: pp = p + 2;
671: }
672: if (pp)
673: bufcat(h, pp);
674: }
675:
676: void
1.35 schwarze 677: buffmt_man(struct html *h, const char *name, const char *sec)
1.1 schwarze 678: {
679: const char *p, *pp;
680:
681: pp = h->base_man;
1.35 schwarze 682:
1.26 schwarze 683: bufinit(h);
1.1 schwarze 684: while (NULL != (p = strchr(pp, '%'))) {
685: bufncat(h, pp, (size_t)(p - pp));
686: switch (*(p + 1)) {
1.35 schwarze 687: case 'S':
1.1 schwarze 688: bufcat(h, sec ? sec : "1");
689: break;
1.35 schwarze 690: case 'N':
1.32 schwarze 691: bufcat_fmt(h, "%s", name);
1.1 schwarze 692: break;
693: default:
694: bufncat(h, p, 2);
695: break;
696: }
697: pp = p + 2;
698: }
699: if (pp)
700: bufcat(h, pp);
701: }
702:
703: void
704: bufcat_su(struct html *h, const char *p, const struct roffsu *su)
705: {
706: double v;
707:
708: v = su->scale;
1.26 schwarze 709: if (SCALE_MM == su->unit && 0.0 == (v /= 100.0))
710: v = 1.0;
1.40 schwarze 711: else if (SCALE_BU == su->unit)
712: v /= 24.0;
1.1 schwarze 713:
1.26 schwarze 714: bufcat_fmt(h, "%s: %.2f%s;", p, v, roffscales[su->unit]);
1.1 schwarze 715: }
716:
1.3 schwarze 717: void
1.26 schwarze 718: bufcat_id(struct html *h, const char *src)
1.3 schwarze 719: {
720:
1.62 bentley 721: /* Cf. <http://www.w3.org/TR/html5/dom.html#the-id-attribute>. */
1.3 schwarze 722:
1.62 bentley 723: for (; '\0' != *src; src++)
724: bufncat(h, *src == ' ' ? "_" : src, 1);
1.3 schwarze 725: }
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