Annotation of src/usr.bin/mandoc/html.c, Revision 1.83
1.83 ! schwarze 1: /* $OpenBSD: html.c,v 1.82 2017/05/14 12:26:59 schwarze Exp $ */
1.1 schwarze 2: /*
1.42 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.64 schwarze 4: * Copyright (c) 2011-2015, 2017 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:
1.80 schwarze 29: #include "mandoc_aux.h"
1.9 schwarze 30: #include "mandoc.h"
1.80 schwarze 31: #include "roff.h"
1.1 schwarze 32: #include "out.h"
33: #include "html.h"
1.56 schwarze 34: #include "manconf.h"
1.1 schwarze 35: #include "main.h"
36:
37: struct htmldata {
38: const char *name;
39: int flags;
1.66 schwarze 40: #define HTML_NOSTACK (1 << 0)
41: #define HTML_AUTOCLOSE (1 << 1)
42: #define HTML_NLBEFORE (1 << 2)
43: #define HTML_NLBEGIN (1 << 3)
44: #define HTML_NLEND (1 << 4)
45: #define HTML_NLAFTER (1 << 5)
46: #define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER)
47: #define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND)
48: #define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE)
49: #define HTML_INDENT (1 << 6)
50: #define HTML_NOINDENT (1 << 7)
1.1 schwarze 51: };
52:
53: static const struct htmldata htmltags[TAG_MAX] = {
1.66 schwarze 54: {"html", HTML_NLALL},
55: {"head", HTML_NLALL | HTML_INDENT},
56: {"body", HTML_NLALL},
57: {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
58: {"title", HTML_NLAROUND},
59: {"div", HTML_NLAROUND},
60: {"h1", HTML_NLAROUND},
61: {"h2", HTML_NLAROUND},
62: {"span", 0},
63: {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
64: {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
65: {"a", 0},
66: {"table", HTML_NLALL | HTML_INDENT},
1.75 schwarze 67: {"colgroup", HTML_NLALL | HTML_INDENT},
1.66 schwarze 68: {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
69: {"tr", HTML_NLALL | HTML_INDENT},
70: {"td", HTML_NLAROUND},
71: {"li", HTML_NLAROUND | HTML_INDENT},
72: {"ul", HTML_NLALL | HTML_INDENT},
73: {"ol", HTML_NLALL | HTML_INDENT},
74: {"dl", HTML_NLALL | HTML_INDENT},
75: {"dt", HTML_NLAROUND},
76: {"dd", HTML_NLAROUND | HTML_INDENT},
77: {"pre", HTML_NLALL | HTML_NOINDENT},
1.77 schwarze 78: {"var", 0},
1.76 schwarze 79: {"cite", 0},
1.66 schwarze 80: {"b", 0},
81: {"i", 0},
82: {"code", 0},
83: {"small", 0},
84: {"style", HTML_NLALL | HTML_INDENT},
85: {"math", HTML_NLALL | HTML_INDENT},
86: {"mrow", 0},
87: {"mi", 0},
88: {"mo", 0},
89: {"msup", 0},
90: {"msub", 0},
91: {"msubsup", 0},
92: {"mfrac", 0},
93: {"msqrt", 0},
94: {"mfenced", 0},
95: {"mtable", 0},
96: {"mtr", 0},
97: {"mtd", 0},
98: {"munderover", 0},
99: {"munder", 0},
100: {"mover", 0},
1.5 schwarze 101: };
102:
1.26 schwarze 103: static const char *const roffscales[SCALE_MAX] = {
104: "cm", /* SCALE_CM */
105: "in", /* SCALE_IN */
106: "pc", /* SCALE_PC */
107: "pt", /* SCALE_PT */
108: "em", /* SCALE_EM */
109: "em", /* SCALE_MM */
110: "ex", /* SCALE_EN */
111: "ex", /* SCALE_BU */
112: "em", /* SCALE_VS */
113: "ex", /* SCALE_FS */
114: };
1.5 schwarze 115:
1.64 schwarze 116: static void a2width(const char *, struct roffsu *);
1.67 schwarze 117: static void print_byte(struct html *, char);
118: static void print_endword(struct html *);
119: static void print_indent(struct html *);
120: static void print_word(struct html *, const char *);
121:
1.54 schwarze 122: static void print_ctag(struct html *, struct tag *);
1.67 schwarze 123: static int print_escape(struct html *, char);
1.65 schwarze 124: static int print_encode(struct html *, const char *, const char *, int);
125: static void print_href(struct html *, const char *, const char *, int);
1.26 schwarze 126: static void print_metaf(struct html *, enum mandoc_esc);
1.5 schwarze 127:
1.35 schwarze 128:
1.50 schwarze 129: void *
1.61 schwarze 130: html_alloc(const struct manoutput *outopts)
1.1 schwarze 131: {
132: struct html *h;
133:
1.24 schwarze 134: h = mandoc_calloc(1, sizeof(struct html));
1.1 schwarze 135:
1.74 schwarze 136: h->tag = NULL;
1.56 schwarze 137: h->style = outopts->style;
138: h->base_man = outopts->man;
139: h->base_includes = outopts->includes;
140: if (outopts->fragment)
141: h->oflags |= HTML_FRAGMENT;
1.1 schwarze 142:
1.58 schwarze 143: return h;
1.1 schwarze 144: }
145:
146: void
147: html_free(void *p)
148: {
149: struct tag *tag;
150: struct html *h;
151:
152: h = (struct html *)p;
153:
1.74 schwarze 154: while ((tag = h->tag) != NULL) {
155: h->tag = tag->next;
1.1 schwarze 156: free(tag);
157: }
158:
159: free(h);
160: }
161:
162: void
163: print_gen_head(struct html *h)
164: {
1.42 schwarze 165: struct tag *t;
166:
1.64 schwarze 167: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.1 schwarze 168:
1.42 schwarze 169: /*
170: * Print a default style-sheet.
171: */
1.66 schwarze 172:
1.64 schwarze 173: t = print_otag(h, TAG_STYLE, "");
1.66 schwarze 174: print_text(h, "table.head, table.foot { width: 100%; }");
1.67 schwarze 175: print_endline(h);
1.66 schwarze 176: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.67 schwarze 177: print_endline(h);
1.66 schwarze 178: print_text(h, "td.head-vol { text-align: center; }");
1.67 schwarze 179: print_endline(h);
1.68 schwarze 180: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.42 schwarze 181: print_tagq(h, t);
1.1 schwarze 182:
1.64 schwarze 183: if (h->style)
184: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
185: h->style, "type", "text/css", "media", "all");
1.1 schwarze 186: }
187:
1.5 schwarze 188: static void
1.26 schwarze 189: print_metaf(struct html *h, enum mandoc_esc deco)
1.5 schwarze 190: {
191: enum htmlfont font;
1.1 schwarze 192:
1.5 schwarze 193: switch (deco) {
1.35 schwarze 194: case ESCAPE_FONTPREV:
1.5 schwarze 195: font = h->metal;
196: break;
1.35 schwarze 197: case ESCAPE_FONTITALIC:
1.5 schwarze 198: font = HTMLFONT_ITALIC;
199: break;
1.35 schwarze 200: case ESCAPE_FONTBOLD:
1.5 schwarze 201: font = HTMLFONT_BOLD;
202: break;
1.35 schwarze 203: case ESCAPE_FONTBI:
1.31 schwarze 204: font = HTMLFONT_BI;
205: break;
1.35 schwarze 206: case ESCAPE_FONT:
207: case ESCAPE_FONTROMAN:
1.5 schwarze 208: font = HTMLFONT_NONE;
209: break;
210: default:
211: abort();
1.1 schwarze 212: }
213:
1.20 schwarze 214: if (h->metaf) {
215: print_tagq(h, h->metaf);
216: h->metaf = NULL;
217: }
218:
219: h->metal = h->metac;
220: h->metac = font;
221:
1.31 schwarze 222: switch (font) {
1.35 schwarze 223: case HTMLFONT_ITALIC:
1.64 schwarze 224: h->metaf = print_otag(h, TAG_I, "");
1.31 schwarze 225: break;
1.35 schwarze 226: case HTMLFONT_BOLD:
1.64 schwarze 227: h->metaf = print_otag(h, TAG_B, "");
1.31 schwarze 228: break;
1.35 schwarze 229: case HTMLFONT_BI:
1.64 schwarze 230: h->metaf = print_otag(h, TAG_B, "");
231: print_otag(h, TAG_I, "");
1.31 schwarze 232: break;
233: default:
234: break;
235: }
1.80 schwarze 236: }
237:
238: char *
239: html_make_id(const struct roff_node *n)
240: {
241: const struct roff_node *nch;
242: char *buf, *cp;
243:
244: for (nch = n->child; nch != NULL; nch = nch->next)
245: if (nch->type != ROFFT_TEXT)
246: return NULL;
247:
248: buf = NULL;
249: deroff(&buf, n);
250:
251: /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */
252:
253: for (cp = buf; *cp != '\0'; cp++)
254: if (*cp == ' ')
255: *cp = '_';
256:
257: return buf;
1.1 schwarze 258: }
259:
1.26 schwarze 260: int
261: html_strlen(const char *cp)
262: {
1.30 schwarze 263: size_t rsz;
264: int skip, sz;
1.26 schwarze 265:
266: /*
267: * Account for escaped sequences within string length
268: * calculations. This follows the logic in term_strlen() as we
269: * must calculate the width of produced strings.
270: * Assume that characters are always width of "1". This is
271: * hacky, but it gets the job done for approximation of widths.
272: */
273:
274: sz = 0;
1.30 schwarze 275: skip = 0;
276: while (1) {
277: rsz = strcspn(cp, "\\");
278: if (rsz) {
279: cp += rsz;
280: if (skip) {
281: skip = 0;
282: rsz--;
283: }
284: sz += rsz;
285: }
286: if ('\0' == *cp)
287: break;
288: cp++;
289: switch (mandoc_escape(&cp, NULL, NULL)) {
1.35 schwarze 290: case ESCAPE_ERROR:
1.58 schwarze 291: return sz;
1.35 schwarze 292: case ESCAPE_UNICODE:
293: case ESCAPE_NUMBERED:
294: case ESCAPE_SPECIAL:
1.55 schwarze 295: case ESCAPE_OVERSTRIKE:
1.30 schwarze 296: if (skip)
297: skip = 0;
298: else
299: sz++;
300: break;
1.35 schwarze 301: case ESCAPE_SKIPCHAR:
1.30 schwarze 302: skip = 1;
1.26 schwarze 303: break;
304: default:
305: break;
306: }
307: }
1.58 schwarze 308: return sz;
1.26 schwarze 309: }
1.1 schwarze 310:
1.5 schwarze 311: static int
1.67 schwarze 312: print_escape(struct html *h, char c)
1.38 schwarze 313: {
314:
315: switch (c) {
316: case '<':
1.67 schwarze 317: print_word(h, "<");
1.38 schwarze 318: break;
319: case '>':
1.67 schwarze 320: print_word(h, ">");
1.38 schwarze 321: break;
322: case '&':
1.67 schwarze 323: print_word(h, "&");
1.38 schwarze 324: break;
325: case '"':
1.67 schwarze 326: print_word(h, """);
1.38 schwarze 327: break;
328: case ASCII_NBRSP:
1.67 schwarze 329: print_word(h, " ");
1.38 schwarze 330: break;
331: case ASCII_HYPH:
1.67 schwarze 332: print_byte(h, '-');
1.59 schwarze 333: break;
1.38 schwarze 334: case ASCII_BREAK:
335: break;
336: default:
1.58 schwarze 337: return 0;
1.38 schwarze 338: }
1.58 schwarze 339: return 1;
1.38 schwarze 340: }
341:
342: static int
1.65 schwarze 343: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.1 schwarze 344: {
1.67 schwarze 345: char numbuf[16];
1.4 schwarze 346: size_t sz;
1.26 schwarze 347: int c, len, nospace;
1.5 schwarze 348: const char *seq;
1.26 schwarze 349: enum mandoc_esc esc;
1.37 schwarze 350: static const char rejs[9] = { '\\', '<', '>', '&', '"',
1.33 schwarze 351: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.5 schwarze 352:
1.65 schwarze 353: if (pend == NULL)
354: pend = strchr(p, '\0');
355:
1.5 schwarze 356: nospace = 0;
1.1 schwarze 357:
1.65 schwarze 358: while (p < pend) {
1.30 schwarze 359: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
360: h->flags &= ~HTML_SKIPCHAR;
361: p++;
362: continue;
363: }
364:
1.67 schwarze 365: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
366: if (*p == ' ')
367: print_endword(h);
368: else
369: print_byte(h, *p);
1.4 schwarze 370:
1.65 schwarze 371: if (p >= pend)
1.26 schwarze 372: break;
373:
1.67 schwarze 374: if (print_escape(h, *p++))
1.33 schwarze 375: continue;
1.4 schwarze 376:
1.26 schwarze 377: esc = mandoc_escape(&p, &seq, &len);
378: if (ESCAPE_ERROR == esc)
379: break;
1.5 schwarze 380:
1.26 schwarze 381: switch (esc) {
1.35 schwarze 382: case ESCAPE_FONT:
383: case ESCAPE_FONTPREV:
384: case ESCAPE_FONTBOLD:
385: case ESCAPE_FONTITALIC:
386: case ESCAPE_FONTBI:
387: case ESCAPE_FONTROMAN:
1.30 schwarze 388: if (0 == norecurse)
389: print_metaf(h, esc);
390: continue;
1.35 schwarze 391: case ESCAPE_SKIPCHAR:
1.30 schwarze 392: h->flags |= HTML_SKIPCHAR;
393: continue;
394: default:
395: break;
396: }
397:
398: if (h->flags & HTML_SKIPCHAR) {
399: h->flags &= ~HTML_SKIPCHAR;
400: continue;
401: }
402:
403: switch (esc) {
1.35 schwarze 404: case ESCAPE_UNICODE:
1.38 schwarze 405: /* Skip past "u" header. */
1.26 schwarze 406: c = mchars_num2uc(seq + 1, len - 1);
407: break;
1.35 schwarze 408: case ESCAPE_NUMBERED:
1.26 schwarze 409: c = mchars_num2char(seq, len);
1.51 schwarze 410: if (c < 0)
411: continue;
1.26 schwarze 412: break;
1.35 schwarze 413: case ESCAPE_SPECIAL:
1.61 schwarze 414: c = mchars_spec2cp(seq, len);
1.51 schwarze 415: if (c <= 0)
416: continue;
1.26 schwarze 417: break;
1.35 schwarze 418: case ESCAPE_NOSPACE:
1.26 schwarze 419: if ('\0' == *p)
420: nospace = 1;
1.49 schwarze 421: continue;
1.55 schwarze 422: case ESCAPE_OVERSTRIKE:
423: if (len == 0)
424: continue;
425: c = seq[len - 1];
426: break;
1.5 schwarze 427: default:
1.49 schwarze 428: continue;
1.5 schwarze 429: }
1.51 schwarze 430: if ((c < 0x20 && c != 0x09) ||
431: (c > 0x7E && c < 0xA0))
1.49 schwarze 432: c = 0xFFFD;
1.67 schwarze 433: if (c > 0x7E) {
434: (void)snprintf(numbuf, sizeof(numbuf), "&#%d;", c);
435: print_word(h, numbuf);
436: } else if (print_escape(h, c) == 0)
437: print_byte(h, c);
1.1 schwarze 438: }
1.5 schwarze 439:
1.58 schwarze 440: return nospace;
1.1 schwarze 441: }
442:
1.6 schwarze 443: static void
1.65 schwarze 444: print_href(struct html *h, const char *name, const char *sec, int man)
1.6 schwarze 445: {
1.65 schwarze 446: const char *p, *pp;
447:
448: pp = man ? h->base_man : h->base_includes;
449: while ((p = strchr(pp, '%')) != NULL) {
450: print_encode(h, pp, p, 1);
451: if (man && p[1] == 'S') {
452: if (sec == NULL)
1.67 schwarze 453: print_byte(h, '1');
1.65 schwarze 454: else
455: print_encode(h, sec, NULL, 1);
456: } else if ((man && p[1] == 'N') ||
457: (man == 0 && p[1] == 'I'))
458: print_encode(h, name, NULL, 1);
459: else
460: print_encode(h, p, p + 2, 1);
461: pp = p + 2;
462: }
463: if (*pp != '\0')
464: print_encode(h, pp, NULL, 1);
1.6 schwarze 465: }
466:
1.1 schwarze 467: struct tag *
1.64 schwarze 468: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.1 schwarze 469: {
1.64 schwarze 470: va_list ap;
471: struct roffsu mysu, *su;
1.67 schwarze 472: char numbuf[16];
1.1 schwarze 473: struct tag *t;
1.65 schwarze 474: const char *attr;
1.73 schwarze 475: char *arg1, *arg2;
1.65 schwarze 476: double v;
1.66 schwarze 477: int i, have_style, tflags;
478:
479: tflags = htmltags[tag].flags;
1.1 schwarze 480:
1.74 schwarze 481: /* Push this tag onto the stack of open scopes. */
1.6 schwarze 482:
1.66 schwarze 483: if ((tflags & HTML_NOSTACK) == 0) {
1.24 schwarze 484: t = mandoc_malloc(sizeof(struct tag));
1.1 schwarze 485: t->tag = tag;
1.74 schwarze 486: t->next = h->tag;
487: h->tag = t;
1.1 schwarze 488: } else
489: t = NULL;
490:
1.66 schwarze 491: if (tflags & HTML_NLBEFORE)
1.67 schwarze 492: print_endline(h);
493: if (h->col == 0)
494: print_indent(h);
1.66 schwarze 495: else if ((h->flags & HTML_NOSPACE) == 0) {
496: if (h->flags & HTML_KEEP)
1.67 schwarze 497: print_word(h, " ");
1.66 schwarze 498: else {
499: if (h->flags & HTML_PREKEEP)
500: h->flags |= HTML_KEEP;
1.67 schwarze 501: print_endword(h);
1.12 schwarze 502: }
1.66 schwarze 503: }
1.1 schwarze 504:
1.13 schwarze 505: if ( ! (h->flags & HTML_NONOSPACE))
506: h->flags &= ~HTML_NOSPACE;
1.14 schwarze 507: else
508: h->flags |= HTML_NOSPACE;
1.13 schwarze 509:
1.6 schwarze 510: /* Print out the tag name and attributes. */
511:
1.67 schwarze 512: print_byte(h, '<');
513: print_word(h, htmltags[tag].name);
1.64 schwarze 514:
515: va_start(ap, fmt);
516:
517: have_style = 0;
518: while (*fmt != '\0') {
519: if (*fmt == 's') {
520: have_style = 1;
521: fmt++;
522: break;
523: }
1.73 schwarze 524:
525: /* Parse a non-style attribute and its arguments. */
526:
527: arg1 = va_arg(ap, char *);
1.64 schwarze 528: switch (*fmt++) {
529: case 'c':
1.65 schwarze 530: attr = "class";
1.64 schwarze 531: break;
532: case 'h':
1.65 schwarze 533: attr = "href";
1.64 schwarze 534: break;
535: case 'i':
1.65 schwarze 536: attr = "id";
1.64 schwarze 537: break;
538: case '?':
1.73 schwarze 539: attr = arg1;
540: arg1 = va_arg(ap, char *);
1.64 schwarze 541: break;
542: default:
543: abort();
544: }
1.73 schwarze 545: arg2 = NULL;
546: if (*fmt == 'M')
547: arg2 = va_arg(ap, char *);
548: if (arg1 == NULL)
549: continue;
550:
551: /* Print the non-style attributes. */
552:
1.67 schwarze 553: print_byte(h, ' ');
554: print_word(h, attr);
555: print_byte(h, '=');
556: print_byte(h, '"');
1.65 schwarze 557: switch (*fmt) {
1.78 schwarze 558: case 'I':
559: print_href(h, arg1, NULL, 0);
560: fmt++;
561: break;
1.65 schwarze 562: case 'M':
1.73 schwarze 563: print_href(h, arg1, arg2, 1);
1.65 schwarze 564: fmt++;
565: break;
1.78 schwarze 566: case 'R':
567: print_byte(h, '#');
568: print_encode(h, arg1, NULL, 1);
1.65 schwarze 569: fmt++;
570: break;
1.78 schwarze 571: case 'T':
572: print_encode(h, arg1, NULL, 1);
573: print_word(h, "\" title=\"");
574: print_encode(h, arg1, NULL, 1);
1.65 schwarze 575: fmt++;
1.78 schwarze 576: break;
1.65 schwarze 577: default:
1.73 schwarze 578: print_encode(h, arg1, NULL, 1);
1.65 schwarze 579: break;
580: }
1.67 schwarze 581: print_byte(h, '"');
1.64 schwarze 582: }
583:
584: /* Print out styles. */
585:
586: while (*fmt != '\0') {
1.73 schwarze 587: arg1 = NULL;
588: su = NULL;
1.64 schwarze 589:
590: /* First letter: input argument type. */
591:
592: switch (*fmt++) {
593: case 'h':
594: i = va_arg(ap, int);
1.73 schwarze 595: su = &mysu;
1.64 schwarze 596: SCALE_HS_INIT(su, i);
597: break;
598: case 's':
1.73 schwarze 599: arg1 = va_arg(ap, char *);
1.64 schwarze 600: break;
601: case 'u':
602: su = va_arg(ap, struct roffsu *);
603: break;
604: case 'v':
605: i = va_arg(ap, int);
1.73 schwarze 606: su = &mysu;
1.64 schwarze 607: SCALE_VS_INIT(su, i);
608: break;
609: case 'w':
1.73 schwarze 610: if ((arg2 = va_arg(ap, char *)) == NULL)
611: break;
612: su = &mysu;
613: a2width(arg2, su);
1.81 schwarze 614: if (*fmt == '+') {
615: /* Increase to make even bold text fit. */
1.82 schwarze 616: su->scale *= 1.2;
1.81 schwarze 617: /* Add padding. */
618: su->scale += 3.0;
619: fmt++;
620: }
621: if (*fmt == '-') {
1.71 schwarze 622: su->scale *= -1.0;
1.81 schwarze 623: fmt++;
624: }
1.64 schwarze 625: break;
626: default:
627: abort();
628: }
629:
630: /* Second letter: style name. */
631:
632: switch (*fmt++) {
633: case 'b':
1.65 schwarze 634: attr = "margin-bottom";
1.64 schwarze 635: break;
636: case 'h':
1.65 schwarze 637: attr = "height";
1.64 schwarze 638: break;
639: case 'i':
1.65 schwarze 640: attr = "text-indent";
1.64 schwarze 641: break;
642: case 'l':
1.65 schwarze 643: attr = "margin-left";
1.64 schwarze 644: break;
645: case 't':
1.65 schwarze 646: attr = "margin-top";
1.64 schwarze 647: break;
648: case 'w':
1.65 schwarze 649: attr = "width";
1.64 schwarze 650: break;
651: case 'W':
1.65 schwarze 652: attr = "min-width";
1.64 schwarze 653: break;
654: case '?':
1.73 schwarze 655: attr = arg1;
656: arg1 = va_arg(ap, char *);
657: break;
1.64 schwarze 658: default:
659: abort();
660: }
1.73 schwarze 661: if (su == NULL && arg1 == NULL)
662: continue;
663:
664: if (have_style == 1)
665: print_word(h, " style=\"");
666: else
667: print_byte(h, ' ');
1.67 schwarze 668: print_word(h, attr);
669: print_byte(h, ':');
670: print_byte(h, ' ');
1.73 schwarze 671: if (su != NULL) {
672: v = su->scale;
673: if (su->unit == SCALE_MM && (v /= 100.0) == 0.0)
674: v = 1.0;
675: else if (su->unit == SCALE_BU)
676: v /= 24.0;
677: (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v);
678: print_word(h, numbuf);
679: print_word(h, roffscales[su->unit]);
680: } else
681: print_word(h, arg1);
1.67 schwarze 682: print_byte(h, ';');
1.73 schwarze 683: have_style = 2;
1.64 schwarze 684: }
1.73 schwarze 685: if (have_style == 2)
1.67 schwarze 686: print_byte(h, '"');
1.64 schwarze 687:
688: va_end(ap);
1.6 schwarze 689:
1.42 schwarze 690: /* Accommodate for "well-formed" singleton escaping. */
1.6 schwarze 691:
692: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.67 schwarze 693: print_byte(h, '/');
1.6 schwarze 694:
1.67 schwarze 695: print_byte(h, '>');
1.1 schwarze 696:
1.66 schwarze 697: if (tflags & HTML_NLBEGIN)
1.67 schwarze 698: print_endline(h);
1.66 schwarze 699: else
700: h->flags |= HTML_NOSPACE;
1.18 schwarze 701:
1.66 schwarze 702: if (tflags & HTML_INDENT)
703: h->indent++;
704: if (tflags & HTML_NOINDENT)
705: h->noindent++;
1.18 schwarze 706:
1.58 schwarze 707: return t;
1.1 schwarze 708: }
709:
710: static void
1.54 schwarze 711: print_ctag(struct html *h, struct tag *tag)
1.1 schwarze 712: {
1.66 schwarze 713: int tflags;
1.35 schwarze 714:
1.54 schwarze 715: /*
716: * Remember to close out and nullify the current
717: * meta-font and table, if applicable.
718: */
719: if (tag == h->metaf)
720: h->metaf = NULL;
721: if (tag == h->tblt)
722: h->tblt = NULL;
723:
1.66 schwarze 724: tflags = htmltags[tag->tag].flags;
725:
726: if (tflags & HTML_INDENT)
727: h->indent--;
728: if (tflags & HTML_NOINDENT)
729: h->noindent--;
730: if (tflags & HTML_NLEND)
1.67 schwarze 731: print_endline(h);
732: print_indent(h);
733: print_byte(h, '<');
734: print_byte(h, '/');
735: print_word(h, htmltags[tag->tag].name);
736: print_byte(h, '>');
1.66 schwarze 737: if (tflags & HTML_NLAFTER)
1.67 schwarze 738: print_endline(h);
1.54 schwarze 739:
1.74 schwarze 740: h->tag = tag->next;
1.54 schwarze 741: free(tag);
1.1 schwarze 742: }
743:
744: void
1.6 schwarze 745: print_gen_decls(struct html *h)
746: {
1.67 schwarze 747: print_word(h, "<!DOCTYPE html>");
748: print_endline(h);
1.1 schwarze 749: }
750:
751: void
1.12 schwarze 752: print_text(struct html *h, const char *word)
1.1 schwarze 753: {
1.67 schwarze 754: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.12 schwarze 755: if ( ! (HTML_KEEP & h->flags)) {
756: if (HTML_PREKEEP & h->flags)
757: h->flags |= HTML_KEEP;
1.67 schwarze 758: print_endword(h);
1.12 schwarze 759: } else
1.67 schwarze 760: print_word(h, " ");
1.12 schwarze 761: }
1.1 schwarze 762:
1.20 schwarze 763: assert(NULL == h->metaf);
1.31 schwarze 764: switch (h->metac) {
1.35 schwarze 765: case HTMLFONT_ITALIC:
1.64 schwarze 766: h->metaf = print_otag(h, TAG_I, "");
1.31 schwarze 767: break;
1.35 schwarze 768: case HTMLFONT_BOLD:
1.64 schwarze 769: h->metaf = print_otag(h, TAG_B, "");
1.31 schwarze 770: break;
1.35 schwarze 771: case HTMLFONT_BI:
1.64 schwarze 772: h->metaf = print_otag(h, TAG_B, "");
773: print_otag(h, TAG_I, "");
1.31 schwarze 774: break;
775: default:
1.67 schwarze 776: print_indent(h);
1.31 schwarze 777: break;
778: }
1.20 schwarze 779:
1.12 schwarze 780: assert(word);
1.65 schwarze 781: if ( ! print_encode(h, word, NULL, 0)) {
1.13 schwarze 782: if ( ! (h->flags & HTML_NONOSPACE))
783: h->flags &= ~HTML_NOSPACE;
1.53 schwarze 784: h->flags &= ~HTML_NONEWLINE;
1.28 schwarze 785: } else
1.53 schwarze 786: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.20 schwarze 787:
788: if (h->metaf) {
789: print_tagq(h, h->metaf);
790: h->metaf = NULL;
791: }
1.17 schwarze 792:
793: h->flags &= ~HTML_IGNDELIM;
1.1 schwarze 794: }
795:
796: void
797: print_tagq(struct html *h, const struct tag *until)
798: {
799: struct tag *tag;
800:
1.74 schwarze 801: while ((tag = h->tag) != NULL) {
1.54 schwarze 802: print_ctag(h, tag);
1.1 schwarze 803: if (until && tag == until)
804: return;
805: }
806: }
807:
808: void
809: print_stagq(struct html *h, const struct tag *suntil)
810: {
811: struct tag *tag;
812:
1.74 schwarze 813: while ((tag = h->tag) != NULL) {
1.1 schwarze 814: if (suntil && tag == suntil)
815: return;
1.54 schwarze 816: print_ctag(h, tag);
1.1 schwarze 817: }
818: }
1.42 schwarze 819:
820: void
821: print_paragraph(struct html *h)
822: {
823: struct tag *t;
824:
1.68 schwarze 825: t = print_otag(h, TAG_DIV, "c", "Pp");
1.42 schwarze 826: print_tagq(h, t);
827: }
828:
1.67 schwarze 829:
830: /***********************************************************************
831: * Low level output functions.
832: * They implement line breaking using a short static buffer.
833: ***********************************************************************/
834:
835: /*
836: * Buffer one HTML output byte.
837: * If the buffer is full, flush and deactivate it and start a new line.
838: * If the buffer is inactive, print directly.
839: */
840: static void
841: print_byte(struct html *h, char c)
842: {
843: if ((h->flags & HTML_BUFFER) == 0) {
844: putchar(c);
845: h->col++;
846: return;
847: }
848:
849: if (h->col + h->bufcol < sizeof(h->buf)) {
850: h->buf[h->bufcol++] = c;
851: return;
852: }
853:
854: putchar('\n');
855: h->col = 0;
856: print_indent(h);
857: putchar(' ');
858: putchar(' ');
859: fwrite(h->buf, h->bufcol, 1, stdout);
860: putchar(c);
861: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
862: h->bufcol = 0;
863: h->flags &= ~HTML_BUFFER;
864: }
865:
1.66 schwarze 866: /*
867: * If something was printed on the current output line, end it.
1.67 schwarze 868: * Not to be called right after print_indent().
1.66 schwarze 869: */
1.72 schwarze 870: void
1.67 schwarze 871: print_endline(struct html *h)
1.66 schwarze 872: {
1.67 schwarze 873: if (h->col == 0)
1.66 schwarze 874: return;
875:
1.67 schwarze 876: if (h->bufcol) {
877: putchar(' ');
878: fwrite(h->buf, h->bufcol, 1, stdout);
879: h->bufcol = 0;
880: }
1.66 schwarze 881: putchar('\n');
1.67 schwarze 882: h->col = 0;
883: h->flags |= HTML_NOSPACE;
884: h->flags &= ~HTML_BUFFER;
885: }
886:
887: /*
888: * Flush the HTML output buffer.
889: * If it is inactive, activate it.
890: */
891: static void
892: print_endword(struct html *h)
893: {
894: if (h->noindent) {
895: print_byte(h, ' ');
896: return;
897: }
898:
899: if ((h->flags & HTML_BUFFER) == 0) {
900: h->col++;
901: h->flags |= HTML_BUFFER;
902: } else if (h->bufcol) {
903: putchar(' ');
904: fwrite(h->buf, h->bufcol, 1, stdout);
905: h->col += h->bufcol + 1;
906: }
907: h->bufcol = 0;
1.66 schwarze 908: }
909:
910: /*
911: * If at the beginning of a new output line,
912: * perform indentation and mark the line as containing output.
913: * Make sure to really produce some output right afterwards,
914: * but do not use print_otag() for producing it.
915: */
916: static void
1.67 schwarze 917: print_indent(struct html *h)
1.66 schwarze 918: {
1.67 schwarze 919: size_t i;
1.66 schwarze 920:
1.67 schwarze 921: if (h->col)
1.66 schwarze 922: return;
923:
1.67 schwarze 924: if (h->noindent == 0) {
925: h->col = h->indent * 2;
926: for (i = 0; i < h->col; i++)
1.66 schwarze 927: putchar(' ');
1.67 schwarze 928: }
929: h->flags &= ~HTML_NOSPACE;
930: }
931:
932: /*
933: * Print or buffer some characters
934: * depending on the current HTML output buffer state.
935: */
936: static void
937: print_word(struct html *h, const char *cp)
938: {
939: while (*cp != '\0')
940: print_byte(h, *cp++);
1.66 schwarze 941: }
1.64 schwarze 942:
943: /*
944: * Calculate the scaling unit passed in a `-width' argument. This uses
945: * either a native scaling unit (e.g., 1i, 2m) or the string length of
946: * the value.
947: */
948: static void
949: a2width(const char *p, struct roffsu *su)
950: {
1.83 ! schwarze 951: const char *end;
! 952:
! 953: end = a2roffsu(p, su, SCALE_MAX);
! 954: if (end == NULL || *end != '\0') {
1.64 schwarze 955: su->unit = SCALE_EN;
956: su->scale = html_strlen(p);
957: } else if (su->scale < 0.0)
958: su->scale = 0.0;
1.3 schwarze 959: }
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