Annotation of mandoc/html.c, Revision 1.228
1.228 ! schwarze 1: /* $Id: html.c,v 1.227 2018/05/21 00:30:23 schwarze Exp $ */
1.1 kristaps 2: /*
1.176 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.221 schwarze 4: * Copyright (c) 2011-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.29 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.186 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.29 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.186 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.29 kristaps 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.
1.1 kristaps 17: */
1.92 kristaps 18: #include "config.h"
19:
1.41 kristaps 20: #include <sys/types.h>
1.30 kristaps 21:
1.1 kristaps 22: #include <assert.h>
1.68 kristaps 23: #include <ctype.h>
1.76 kristaps 24: #include <stdarg.h>
1.29 kristaps 25: #include <stdio.h>
1.63 kristaps 26: #include <stdint.h>
1.1 kristaps 27: #include <stdlib.h>
1.33 kristaps 28: #include <string.h>
1.45 kristaps 29: #include <unistd.h>
1.1 kristaps 30:
1.210 schwarze 31: #include "mandoc_aux.h"
1.100 kristaps 32: #include "mandoc.h"
1.210 schwarze 33: #include "roff.h"
1.58 kristaps 34: #include "out.h"
1.51 kristaps 35: #include "html.h"
1.186 schwarze 36: #include "manconf.h"
1.64 kristaps 37: #include "main.h"
1.63 kristaps 38:
1.29 kristaps 39: struct htmldata {
1.63 kristaps 40: const char *name;
1.29 kristaps 41: int flags;
1.196 schwarze 42: #define HTML_NOSTACK (1 << 0)
43: #define HTML_AUTOCLOSE (1 << 1)
44: #define HTML_NLBEFORE (1 << 2)
45: #define HTML_NLBEGIN (1 << 3)
46: #define HTML_NLEND (1 << 4)
47: #define HTML_NLAFTER (1 << 5)
48: #define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER)
49: #define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND)
50: #define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE)
51: #define HTML_INDENT (1 << 6)
52: #define HTML_NOINDENT (1 << 7)
1.29 kristaps 53: };
1.7 kristaps 54:
1.29 kristaps 55: static const struct htmldata htmltags[TAG_MAX] = {
1.196 schwarze 56: {"html", HTML_NLALL},
57: {"head", HTML_NLALL | HTML_INDENT},
58: {"body", HTML_NLALL},
59: {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
60: {"title", HTML_NLAROUND},
61: {"div", HTML_NLAROUND},
1.225 schwarze 62: {"div", 0},
1.196 schwarze 63: {"h1", HTML_NLAROUND},
64: {"h2", HTML_NLAROUND},
65: {"span", 0},
66: {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
67: {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
68: {"a", 0},
69: {"table", HTML_NLALL | HTML_INDENT},
1.205 schwarze 70: {"colgroup", HTML_NLALL | HTML_INDENT},
1.196 schwarze 71: {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
72: {"tr", HTML_NLALL | HTML_INDENT},
73: {"td", HTML_NLAROUND},
74: {"li", HTML_NLAROUND | HTML_INDENT},
75: {"ul", HTML_NLALL | HTML_INDENT},
76: {"ol", HTML_NLALL | HTML_INDENT},
77: {"dl", HTML_NLALL | HTML_INDENT},
78: {"dt", HTML_NLAROUND},
79: {"dd", HTML_NLAROUND | HTML_INDENT},
80: {"pre", HTML_NLALL | HTML_NOINDENT},
1.207 schwarze 81: {"var", 0},
1.206 schwarze 82: {"cite", 0},
1.196 schwarze 83: {"b", 0},
84: {"i", 0},
85: {"code", 0},
86: {"small", 0},
87: {"style", HTML_NLALL | HTML_INDENT},
88: {"math", HTML_NLALL | HTML_INDENT},
89: {"mrow", 0},
90: {"mi", 0},
1.215 schwarze 91: {"mn", 0},
1.196 schwarze 92: {"mo", 0},
93: {"msup", 0},
94: {"msub", 0},
95: {"msubsup", 0},
96: {"mfrac", 0},
97: {"msqrt", 0},
98: {"mfenced", 0},
99: {"mtable", 0},
100: {"mtr", 0},
101: {"mtd", 0},
102: {"munderover", 0},
103: {"munder", 0},
104: {"mover", 0},
1.90 kristaps 105: };
106:
1.140 kristaps 107: static const char *const roffscales[SCALE_MAX] = {
108: "cm", /* SCALE_CM */
109: "in", /* SCALE_IN */
110: "pc", /* SCALE_PC */
111: "pt", /* SCALE_PT */
112: "em", /* SCALE_EM */
113: "em", /* SCALE_MM */
114: "ex", /* SCALE_EN */
115: "ex", /* SCALE_BU */
116: "em", /* SCALE_VS */
117: "ex", /* SCALE_FS */
118: };
119:
1.194 schwarze 120: static void a2width(const char *, struct roffsu *);
1.197 schwarze 121: static void print_byte(struct html *, char);
122: static void print_endword(struct html *);
123: static void print_indent(struct html *);
124: static void print_word(struct html *, const char *);
125:
1.184 schwarze 126: static void print_ctag(struct html *, struct tag *);
1.197 schwarze 127: static int print_escape(struct html *, char);
1.195 schwarze 128: static int print_encode(struct html *, const char *, const char *, int);
129: static void print_href(struct html *, const char *, const char *, int);
1.141 kristaps 130: static void print_metaf(struct html *, enum mandoc_esc);
1.82 kristaps 131:
1.156 schwarze 132:
1.180 schwarze 133: void *
1.191 schwarze 134: html_alloc(const struct manoutput *outopts)
1.10 kristaps 135: {
1.30 kristaps 136: struct html *h;
137:
1.128 kristaps 138: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 139:
1.204 schwarze 140: h->tag = NULL;
1.186 schwarze 141: h->style = outopts->style;
142: h->base_man = outopts->man;
143: h->base_includes = outopts->includes;
144: if (outopts->fragment)
145: h->oflags |= HTML_FRAGMENT;
1.43 kristaps 146:
1.188 schwarze 147: return h;
1.29 kristaps 148: }
1.10 kristaps 149:
1.29 kristaps 150: void
151: html_free(void *p)
152: {
1.30 kristaps 153: struct tag *tag;
154: struct html *h;
155:
156: h = (struct html *)p;
1.37 kristaps 157:
1.204 schwarze 158: while ((tag = h->tag) != NULL) {
159: h->tag = tag->next;
1.30 kristaps 160: free(tag);
161: }
1.53 kristaps 162:
1.30 kristaps 163: free(h);
1.10 kristaps 164: }
1.2 kristaps 165:
1.51 kristaps 166: void
1.29 kristaps 167: print_gen_head(struct html *h)
168: {
1.165 kristaps 169: struct tag *t;
1.41 kristaps 170:
1.194 schwarze 171: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.222 schwarze 172: if (h->style != NULL) {
173: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
174: h->style, "type", "text/css", "media", "all");
175: return;
176: }
1.165 kristaps 177:
1.168 kristaps 178: /*
1.222 schwarze 179: * Print a minimal embedded style sheet.
1.168 kristaps 180: */
1.196 schwarze 181:
1.194 schwarze 182: t = print_otag(h, TAG_STYLE, "");
1.196 schwarze 183: print_text(h, "table.head, table.foot { width: 100%; }");
1.197 schwarze 184: print_endline(h);
1.196 schwarze 185: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197 schwarze 186: print_endline(h);
1.196 schwarze 187: print_text(h, "td.head-vol { text-align: center; }");
1.197 schwarze 188: print_endline(h);
1.198 schwarze 189: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.225 schwarze 190: print_endline(h);
191: print_text(h, "div.Nd, div.Bf, div.Op { display: inline; }");
1.226 schwarze 192: print_endline(h);
1.227 schwarze 193: print_text(h, "span.Pa, span.Ad { font-style: italic; }");
1.228 ! schwarze 194: print_endline(h);
! 195: print_text(h, "span.Ms { font-weight: bold; }");
1.224 schwarze 196: print_endline(h);
197: print_text(h, "dl.Bl-diag ");
198: print_byte(h, '>');
199: print_text(h, " dt { font-weight: bold; }");
1.223 schwarze 200: print_endline(h);
201: print_text(h, "code.Nm, code.Fl, code.Cm, code.Ic, "
202: "code.In, code.Fd, code.Fn,");
203: print_endline(h);
204: print_text(h, "code.Cd { font-weight: bold; "
205: "font-family: inherit; }");
1.165 kristaps 206: print_tagq(h, t);
1.4 kristaps 207: }
208:
1.126 schwarze 209: static void
1.132 kristaps 210: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 211: {
1.90 kristaps 212: enum htmlfont font;
1.88 kristaps 213:
214: switch (deco) {
1.156 schwarze 215: case ESCAPE_FONTPREV:
1.90 kristaps 216: font = h->metal;
1.88 kristaps 217: break;
1.156 schwarze 218: case ESCAPE_FONTITALIC:
1.90 kristaps 219: font = HTMLFONT_ITALIC;
220: break;
1.156 schwarze 221: case ESCAPE_FONTBOLD:
1.90 kristaps 222: font = HTMLFONT_BOLD;
1.88 kristaps 223: break;
1.156 schwarze 224: case ESCAPE_FONTBI:
1.152 schwarze 225: font = HTMLFONT_BI;
226: break;
1.156 schwarze 227: case ESCAPE_FONT:
228: case ESCAPE_FONTROMAN:
1.90 kristaps 229: font = HTMLFONT_NONE;
1.88 kristaps 230: break;
231: default:
232: abort();
233: }
234:
1.122 kristaps 235: if (h->metaf) {
236: print_tagq(h, h->metaf);
237: h->metaf = NULL;
238: }
239:
240: h->metal = h->metac;
241: h->metac = font;
242:
1.152 schwarze 243: switch (font) {
1.156 schwarze 244: case HTMLFONT_ITALIC:
1.194 schwarze 245: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 246: break;
1.156 schwarze 247: case HTMLFONT_BOLD:
1.194 schwarze 248: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 249: break;
1.156 schwarze 250: case HTMLFONT_BI:
1.194 schwarze 251: h->metaf = print_otag(h, TAG_B, "");
252: print_otag(h, TAG_I, "");
1.152 schwarze 253: break;
254: default:
255: break;
256: }
1.210 schwarze 257: }
258:
259: char *
260: html_make_id(const struct roff_node *n)
261: {
262: const struct roff_node *nch;
263: char *buf, *cp;
264:
265: for (nch = n->child; nch != NULL; nch = nch->next)
266: if (nch->type != ROFFT_TEXT)
267: return NULL;
268:
269: buf = NULL;
270: deroff(&buf, n);
1.220 schwarze 271: if (buf == NULL)
272: return NULL;
1.210 schwarze 273:
274: /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */
275:
276: for (cp = buf; *cp != '\0'; cp++)
277: if (*cp == ' ')
278: *cp = '_';
279:
280: return buf;
1.88 kristaps 281: }
282:
1.138 kristaps 283: int
284: html_strlen(const char *cp)
285: {
1.151 schwarze 286: size_t rsz;
287: int skip, sz;
1.138 kristaps 288:
289: /*
290: * Account for escaped sequences within string length
291: * calculations. This follows the logic in term_strlen() as we
292: * must calculate the width of produced strings.
293: * Assume that characters are always width of "1". This is
294: * hacky, but it gets the job done for approximation of widths.
295: */
296:
297: sz = 0;
1.151 schwarze 298: skip = 0;
299: while (1) {
300: rsz = strcspn(cp, "\\");
301: if (rsz) {
302: cp += rsz;
303: if (skip) {
304: skip = 0;
305: rsz--;
306: }
307: sz += rsz;
308: }
309: if ('\0' == *cp)
310: break;
311: cp++;
312: switch (mandoc_escape(&cp, NULL, NULL)) {
1.156 schwarze 313: case ESCAPE_ERROR:
1.188 schwarze 314: return sz;
1.156 schwarze 315: case ESCAPE_UNICODE:
316: case ESCAPE_NUMBERED:
317: case ESCAPE_SPECIAL:
1.185 schwarze 318: case ESCAPE_OVERSTRIKE:
1.151 schwarze 319: if (skip)
320: skip = 0;
321: else
322: sz++;
323: break;
1.156 schwarze 324: case ESCAPE_SKIPCHAR:
1.151 schwarze 325: skip = 1;
1.138 kristaps 326: break;
327: default:
328: break;
329: }
330: }
1.188 schwarze 331: return sz;
1.138 kristaps 332: }
1.88 kristaps 333:
1.85 kristaps 334: static int
1.197 schwarze 335: print_escape(struct html *h, char c)
1.159 schwarze 336: {
337:
338: switch (c) {
339: case '<':
1.197 schwarze 340: print_word(h, "<");
1.159 schwarze 341: break;
342: case '>':
1.197 schwarze 343: print_word(h, ">");
1.159 schwarze 344: break;
345: case '&':
1.197 schwarze 346: print_word(h, "&");
1.159 schwarze 347: break;
348: case '"':
1.197 schwarze 349: print_word(h, """);
1.159 schwarze 350: break;
351: case ASCII_NBRSP:
1.197 schwarze 352: print_word(h, " ");
1.159 schwarze 353: break;
354: case ASCII_HYPH:
1.197 schwarze 355: print_byte(h, '-');
1.189 schwarze 356: break;
1.159 schwarze 357: case ASCII_BREAK:
358: break;
359: default:
1.188 schwarze 360: return 0;
1.159 schwarze 361: }
1.188 schwarze 362: return 1;
1.159 schwarze 363: }
364:
365: static int
1.195 schwarze 366: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 367: {
1.197 schwarze 368: char numbuf[16];
1.214 schwarze 369: struct tag *t;
370: const char *seq;
1.77 kristaps 371: size_t sz;
1.214 schwarze 372: int c, len, breakline, nospace;
1.132 kristaps 373: enum mandoc_esc esc;
1.214 schwarze 374: static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
1.154 schwarze 375: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14 kristaps 376:
1.195 schwarze 377: if (pend == NULL)
378: pend = strchr(p, '\0');
379:
1.214 schwarze 380: breakline = 0;
1.85 kristaps 381: nospace = 0;
382:
1.195 schwarze 383: while (p < pend) {
1.151 schwarze 384: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
385: h->flags &= ~HTML_SKIPCHAR;
386: p++;
387: continue;
388: }
389:
1.197 schwarze 390: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
1.214 schwarze 391: print_byte(h, *p);
392:
393: if (breakline &&
394: (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
395: t = print_otag(h, TAG_DIV, "");
396: print_text(h, "\\~");
397: print_tagq(h, t);
398: breakline = 0;
399: while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
400: p++;
401: continue;
402: }
1.77 kristaps 403:
1.195 schwarze 404: if (p >= pend)
1.132 kristaps 405: break;
406:
1.214 schwarze 407: if (*p == ' ') {
408: print_endword(h);
409: p++;
410: continue;
411: }
412:
1.197 schwarze 413: if (print_escape(h, *p++))
1.154 schwarze 414: continue;
1.77 kristaps 415:
1.132 kristaps 416: esc = mandoc_escape(&p, &seq, &len);
417: if (ESCAPE_ERROR == esc)
418: break;
1.82 kristaps 419:
1.132 kristaps 420: switch (esc) {
1.156 schwarze 421: case ESCAPE_FONT:
422: case ESCAPE_FONTPREV:
423: case ESCAPE_FONTBOLD:
424: case ESCAPE_FONTITALIC:
425: case ESCAPE_FONTBI:
426: case ESCAPE_FONTROMAN:
1.151 schwarze 427: if (0 == norecurse)
428: print_metaf(h, esc);
429: continue;
1.156 schwarze 430: case ESCAPE_SKIPCHAR:
1.151 schwarze 431: h->flags |= HTML_SKIPCHAR;
432: continue;
433: default:
434: break;
435: }
436:
437: if (h->flags & HTML_SKIPCHAR) {
438: h->flags &= ~HTML_SKIPCHAR;
439: continue;
440: }
441:
442: switch (esc) {
1.156 schwarze 443: case ESCAPE_UNICODE:
1.159 schwarze 444: /* Skip past "u" header. */
1.144 kristaps 445: c = mchars_num2uc(seq + 1, len - 1);
446: break;
1.156 schwarze 447: case ESCAPE_NUMBERED:
1.141 kristaps 448: c = mchars_num2char(seq, len);
1.181 schwarze 449: if (c < 0)
450: continue;
1.82 kristaps 451: break;
1.156 schwarze 452: case ESCAPE_SPECIAL:
1.191 schwarze 453: c = mchars_spec2cp(seq, len);
1.181 schwarze 454: if (c <= 0)
455: continue;
1.132 kristaps 456: break;
1.214 schwarze 457: case ESCAPE_BREAK:
458: breakline = 1;
459: continue;
1.156 schwarze 460: case ESCAPE_NOSPACE:
1.132 kristaps 461: if ('\0' == *p)
462: nospace = 1;
1.179 schwarze 463: continue;
1.185 schwarze 464: case ESCAPE_OVERSTRIKE:
465: if (len == 0)
466: continue;
467: c = seq[len - 1];
468: break;
1.82 kristaps 469: default:
1.179 schwarze 470: continue;
1.82 kristaps 471: }
1.181 schwarze 472: if ((c < 0x20 && c != 0x09) ||
473: (c > 0x7E && c < 0xA0))
1.179 schwarze 474: c = 0xFFFD;
1.197 schwarze 475: if (c > 0x7E) {
1.216 schwarze 476: (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197 schwarze 477: print_word(h, numbuf);
478: } else if (print_escape(h, c) == 0)
479: print_byte(h, c);
1.32 kristaps 480: }
1.85 kristaps 481:
1.188 schwarze 482: return nospace;
1.14 kristaps 483: }
484:
1.94 kristaps 485: static void
1.195 schwarze 486: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 487: {
1.195 schwarze 488: const char *p, *pp;
489:
490: pp = man ? h->base_man : h->base_includes;
491: while ((p = strchr(pp, '%')) != NULL) {
492: print_encode(h, pp, p, 1);
493: if (man && p[1] == 'S') {
494: if (sec == NULL)
1.197 schwarze 495: print_byte(h, '1');
1.195 schwarze 496: else
497: print_encode(h, sec, NULL, 1);
498: } else if ((man && p[1] == 'N') ||
499: (man == 0 && p[1] == 'I'))
500: print_encode(h, name, NULL, 1);
501: else
502: print_encode(h, p, p + 2, 1);
503: pp = p + 2;
504: }
505: if (*pp != '\0')
506: print_encode(h, pp, NULL, 1);
1.94 kristaps 507: }
508:
1.51 kristaps 509: struct tag *
1.194 schwarze 510: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 511: {
1.194 schwarze 512: va_list ap;
513: struct roffsu mysu, *su;
1.197 schwarze 514: char numbuf[16];
1.30 kristaps 515: struct tag *t;
1.195 schwarze 516: const char *attr;
1.203 schwarze 517: char *arg1, *arg2;
1.195 schwarze 518: double v;
1.196 schwarze 519: int i, have_style, tflags;
520:
521: tflags = htmltags[tag].flags;
1.30 kristaps 522:
1.204 schwarze 523: /* Push this tag onto the stack of open scopes. */
1.94 kristaps 524:
1.196 schwarze 525: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 526: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 527: t->tag = tag;
1.204 schwarze 528: t->next = h->tag;
529: h->tag = t;
1.30 kristaps 530: } else
531: t = NULL;
1.29 kristaps 532:
1.196 schwarze 533: if (tflags & HTML_NLBEFORE)
1.197 schwarze 534: print_endline(h);
535: if (h->col == 0)
536: print_indent(h);
1.196 schwarze 537: else if ((h->flags & HTML_NOSPACE) == 0) {
538: if (h->flags & HTML_KEEP)
1.216 schwarze 539: print_word(h, " ");
1.196 schwarze 540: else {
541: if (h->flags & HTML_PREKEEP)
542: h->flags |= HTML_KEEP;
1.197 schwarze 543: print_endword(h);
1.105 kristaps 544: }
1.196 schwarze 545: }
1.29 kristaps 546:
1.109 kristaps 547: if ( ! (h->flags & HTML_NONOSPACE))
548: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 549: else
550: h->flags |= HTML_NOSPACE;
1.109 kristaps 551:
1.94 kristaps 552: /* Print out the tag name and attributes. */
553:
1.197 schwarze 554: print_byte(h, '<');
555: print_word(h, htmltags[tag].name);
1.194 schwarze 556:
557: va_start(ap, fmt);
558:
559: have_style = 0;
560: while (*fmt != '\0') {
561: if (*fmt == 's') {
562: have_style = 1;
563: fmt++;
564: break;
565: }
1.203 schwarze 566:
567: /* Parse a non-style attribute and its arguments. */
568:
569: arg1 = va_arg(ap, char *);
1.194 schwarze 570: switch (*fmt++) {
571: case 'c':
1.195 schwarze 572: attr = "class";
1.194 schwarze 573: break;
574: case 'h':
1.195 schwarze 575: attr = "href";
1.194 schwarze 576: break;
577: case 'i':
1.195 schwarze 578: attr = "id";
1.194 schwarze 579: break;
580: case '?':
1.203 schwarze 581: attr = arg1;
582: arg1 = va_arg(ap, char *);
1.194 schwarze 583: break;
584: default:
585: abort();
586: }
1.203 schwarze 587: arg2 = NULL;
588: if (*fmt == 'M')
589: arg2 = va_arg(ap, char *);
590: if (arg1 == NULL)
591: continue;
592:
593: /* Print the non-style attributes. */
594:
1.197 schwarze 595: print_byte(h, ' ');
596: print_word(h, attr);
597: print_byte(h, '=');
598: print_byte(h, '"');
1.195 schwarze 599: switch (*fmt) {
1.208 schwarze 600: case 'I':
601: print_href(h, arg1, NULL, 0);
602: fmt++;
603: break;
1.195 schwarze 604: case 'M':
1.203 schwarze 605: print_href(h, arg1, arg2, 1);
1.195 schwarze 606: fmt++;
607: break;
1.208 schwarze 608: case 'R':
609: print_byte(h, '#');
610: print_encode(h, arg1, NULL, 1);
1.195 schwarze 611: fmt++;
612: break;
1.208 schwarze 613: case 'T':
614: print_encode(h, arg1, NULL, 1);
615: print_word(h, "\" title=\"");
616: print_encode(h, arg1, NULL, 1);
1.195 schwarze 617: fmt++;
1.208 schwarze 618: break;
1.195 schwarze 619: default:
1.203 schwarze 620: print_encode(h, arg1, NULL, 1);
1.195 schwarze 621: break;
622: }
1.197 schwarze 623: print_byte(h, '"');
1.194 schwarze 624: }
625:
626: /* Print out styles. */
627:
628: while (*fmt != '\0') {
1.203 schwarze 629: arg1 = NULL;
630: su = NULL;
1.194 schwarze 631:
632: /* First letter: input argument type. */
633:
634: switch (*fmt++) {
635: case 'h':
636: i = va_arg(ap, int);
1.203 schwarze 637: su = &mysu;
1.194 schwarze 638: SCALE_HS_INIT(su, i);
639: break;
640: case 's':
1.203 schwarze 641: arg1 = va_arg(ap, char *);
1.194 schwarze 642: break;
643: case 'u':
644: su = va_arg(ap, struct roffsu *);
645: break;
646: case 'w':
1.219 schwarze 647: if ((arg2 = va_arg(ap, char *)) != NULL) {
648: su = &mysu;
649: a2width(arg2, su);
650: }
651: if (*fmt == '*') {
652: if (su != NULL && su->unit == SCALE_EN &&
653: su->scale > 5.9 && su->scale < 6.1)
654: su = NULL;
655: fmt++;
1.218 schwarze 656: }
1.211 schwarze 657: if (*fmt == '+') {
1.219 schwarze 658: if (su != NULL) {
659: /* Make even bold text fit. */
660: su->scale *= 1.2;
661: /* Add padding. */
662: su->scale += 3.0;
663: }
1.211 schwarze 664: fmt++;
665: }
666: if (*fmt == '-') {
1.219 schwarze 667: if (su != NULL)
668: su->scale *= -1.0;
1.211 schwarze 669: fmt++;
670: }
1.194 schwarze 671: break;
672: default:
673: abort();
674: }
675:
676: /* Second letter: style name. */
677:
678: switch (*fmt++) {
679: case 'h':
1.195 schwarze 680: attr = "height";
1.194 schwarze 681: break;
682: case 'i':
1.195 schwarze 683: attr = "text-indent";
1.194 schwarze 684: break;
685: case 'l':
1.195 schwarze 686: attr = "margin-left";
1.194 schwarze 687: break;
688: case 'w':
1.195 schwarze 689: attr = "width";
1.194 schwarze 690: break;
691: case 'W':
1.195 schwarze 692: attr = "min-width";
1.194 schwarze 693: break;
694: case '?':
1.203 schwarze 695: attr = arg1;
696: arg1 = va_arg(ap, char *);
697: break;
1.194 schwarze 698: default:
699: abort();
700: }
1.203 schwarze 701: if (su == NULL && arg1 == NULL)
702: continue;
703:
704: if (have_style == 1)
705: print_word(h, " style=\"");
706: else
707: print_byte(h, ' ');
1.197 schwarze 708: print_word(h, attr);
709: print_byte(h, ':');
710: print_byte(h, ' ');
1.203 schwarze 711: if (su != NULL) {
712: v = su->scale;
713: if (su->unit == SCALE_MM && (v /= 100.0) == 0.0)
714: v = 1.0;
715: else if (su->unit == SCALE_BU)
716: v /= 24.0;
717: (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v);
718: print_word(h, numbuf);
719: print_word(h, roffscales[su->unit]);
720: } else
721: print_word(h, arg1);
1.197 schwarze 722: print_byte(h, ';');
1.203 schwarze 723: have_style = 2;
1.194 schwarze 724: }
1.203 schwarze 725: if (have_style == 2)
1.197 schwarze 726: print_byte(h, '"');
1.194 schwarze 727:
728: va_end(ap);
1.94 kristaps 729:
1.172 kristaps 730: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 731:
1.93 kristaps 732: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 733: print_byte(h, '/');
1.93 kristaps 734:
1.197 schwarze 735: print_byte(h, '>');
1.14 kristaps 736:
1.196 schwarze 737: if (tflags & HTML_NLBEGIN)
1.197 schwarze 738: print_endline(h);
1.196 schwarze 739: else
740: h->flags |= HTML_NOSPACE;
1.117 kristaps 741:
1.196 schwarze 742: if (tflags & HTML_INDENT)
743: h->indent++;
744: if (tflags & HTML_NOINDENT)
745: h->noindent++;
1.117 kristaps 746:
1.188 schwarze 747: return t;
1.14 kristaps 748: }
749:
1.29 kristaps 750: static void
1.184 schwarze 751: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 752: {
1.196 schwarze 753: int tflags;
1.156 schwarze 754:
1.184 schwarze 755: /*
756: * Remember to close out and nullify the current
757: * meta-font and table, if applicable.
758: */
759: if (tag == h->metaf)
760: h->metaf = NULL;
761: if (tag == h->tblt)
762: h->tblt = NULL;
763:
1.196 schwarze 764: tflags = htmltags[tag->tag].flags;
765:
766: if (tflags & HTML_INDENT)
767: h->indent--;
768: if (tflags & HTML_NOINDENT)
769: h->noindent--;
770: if (tflags & HTML_NLEND)
1.197 schwarze 771: print_endline(h);
772: print_indent(h);
773: print_byte(h, '<');
774: print_byte(h, '/');
775: print_word(h, htmltags[tag->tag].name);
776: print_byte(h, '>');
1.196 schwarze 777: if (tflags & HTML_NLAFTER)
1.197 schwarze 778: print_endline(h);
1.184 schwarze 779:
1.204 schwarze 780: h->tag = tag->next;
1.184 schwarze 781: free(tag);
1.14 kristaps 782: }
783:
1.51 kristaps 784: void
1.93 kristaps 785: print_gen_decls(struct html *h)
1.1 kristaps 786: {
1.197 schwarze 787: print_word(h, "<!DOCTYPE html>");
788: print_endline(h);
1.221 schwarze 789: }
790:
791: void
792: print_gen_comment(struct html *h, struct roff_node *n)
793: {
794: int wantblank;
795:
796: print_word(h, "<!-- This is an automatically generated file."
797: " Do not edit.");
798: h->indent = 1;
799: wantblank = 0;
800: while (n != NULL && n->type == ROFFT_COMMENT) {
801: if (strstr(n->string, "-->") == NULL &&
802: (wantblank || *n->string != '\0')) {
803: print_endline(h);
804: print_indent(h);
805: print_word(h, n->string);
806: wantblank = *n->string != '\0';
807: }
808: n = n->next;
809: }
810: if (wantblank)
811: print_endline(h);
812: print_word(h, " -->");
813: print_endline(h);
814: h->indent = 0;
1.1 kristaps 815: }
816:
1.51 kristaps 817: void
1.104 kristaps 818: print_text(struct html *h, const char *word)
1.1 kristaps 819: {
1.197 schwarze 820: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 821: if ( ! (HTML_KEEP & h->flags)) {
822: if (HTML_PREKEEP & h->flags)
823: h->flags |= HTML_KEEP;
1.197 schwarze 824: print_endword(h);
1.105 kristaps 825: } else
1.216 schwarze 826: print_word(h, " ");
1.105 kristaps 827: }
1.30 kristaps 828:
1.122 kristaps 829: assert(NULL == h->metaf);
1.152 schwarze 830: switch (h->metac) {
1.156 schwarze 831: case HTMLFONT_ITALIC:
1.194 schwarze 832: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 833: break;
1.156 schwarze 834: case HTMLFONT_BOLD:
1.194 schwarze 835: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 836: break;
1.156 schwarze 837: case HTMLFONT_BI:
1.194 schwarze 838: h->metaf = print_otag(h, TAG_B, "");
839: print_otag(h, TAG_I, "");
1.152 schwarze 840: break;
841: default:
1.197 schwarze 842: print_indent(h);
1.152 schwarze 843: break;
844: }
1.122 kristaps 845:
1.104 kristaps 846: assert(word);
1.195 schwarze 847: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 848: if ( ! (h->flags & HTML_NONOSPACE))
849: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 850: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 851: } else
1.183 schwarze 852: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 853:
854: if (h->metaf) {
855: print_tagq(h, h->metaf);
856: h->metaf = NULL;
857: }
1.113 schwarze 858:
859: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 860: }
1.30 kristaps 861:
1.51 kristaps 862: void
1.30 kristaps 863: print_tagq(struct html *h, const struct tag *until)
864: {
865: struct tag *tag;
866:
1.204 schwarze 867: while ((tag = h->tag) != NULL) {
1.184 schwarze 868: print_ctag(h, tag);
1.30 kristaps 869: if (until && tag == until)
870: return;
871: }
872: }
873:
1.51 kristaps 874: void
1.30 kristaps 875: print_stagq(struct html *h, const struct tag *suntil)
876: {
877: struct tag *tag;
878:
1.204 schwarze 879: while ((tag = h->tag) != NULL) {
1.30 kristaps 880: if (suntil && tag == suntil)
881: return;
1.184 schwarze 882: print_ctag(h, tag);
1.30 kristaps 883: }
884: }
1.171 kristaps 885:
886: void
887: print_paragraph(struct html *h)
888: {
889: struct tag *t;
890:
1.198 schwarze 891: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 892: print_tagq(h, t);
893: }
894:
1.197 schwarze 895:
896: /***********************************************************************
897: * Low level output functions.
898: * They implement line breaking using a short static buffer.
899: ***********************************************************************/
900:
901: /*
902: * Buffer one HTML output byte.
903: * If the buffer is full, flush and deactivate it and start a new line.
904: * If the buffer is inactive, print directly.
905: */
906: static void
907: print_byte(struct html *h, char c)
908: {
909: if ((h->flags & HTML_BUFFER) == 0) {
910: putchar(c);
911: h->col++;
912: return;
913: }
914:
915: if (h->col + h->bufcol < sizeof(h->buf)) {
916: h->buf[h->bufcol++] = c;
917: return;
918: }
919:
920: putchar('\n');
921: h->col = 0;
922: print_indent(h);
923: putchar(' ');
924: putchar(' ');
925: fwrite(h->buf, h->bufcol, 1, stdout);
926: putchar(c);
927: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
928: h->bufcol = 0;
929: h->flags &= ~HTML_BUFFER;
930: }
931:
1.196 schwarze 932: /*
933: * If something was printed on the current output line, end it.
1.197 schwarze 934: * Not to be called right after print_indent().
1.196 schwarze 935: */
1.202 schwarze 936: void
1.197 schwarze 937: print_endline(struct html *h)
1.196 schwarze 938: {
1.197 schwarze 939: if (h->col == 0)
1.196 schwarze 940: return;
941:
1.197 schwarze 942: if (h->bufcol) {
943: putchar(' ');
944: fwrite(h->buf, h->bufcol, 1, stdout);
945: h->bufcol = 0;
946: }
1.196 schwarze 947: putchar('\n');
1.197 schwarze 948: h->col = 0;
949: h->flags |= HTML_NOSPACE;
950: h->flags &= ~HTML_BUFFER;
951: }
952:
953: /*
954: * Flush the HTML output buffer.
955: * If it is inactive, activate it.
956: */
957: static void
958: print_endword(struct html *h)
959: {
960: if (h->noindent) {
961: print_byte(h, ' ');
962: return;
963: }
964:
965: if ((h->flags & HTML_BUFFER) == 0) {
966: h->col++;
967: h->flags |= HTML_BUFFER;
968: } else if (h->bufcol) {
969: putchar(' ');
970: fwrite(h->buf, h->bufcol, 1, stdout);
971: h->col += h->bufcol + 1;
972: }
973: h->bufcol = 0;
1.196 schwarze 974: }
975:
976: /*
977: * If at the beginning of a new output line,
978: * perform indentation and mark the line as containing output.
979: * Make sure to really produce some output right afterwards,
980: * but do not use print_otag() for producing it.
981: */
982: static void
1.197 schwarze 983: print_indent(struct html *h)
1.196 schwarze 984: {
1.197 schwarze 985: size_t i;
1.196 schwarze 986:
1.197 schwarze 987: if (h->col)
1.196 schwarze 988: return;
989:
1.197 schwarze 990: if (h->noindent == 0) {
991: h->col = h->indent * 2;
992: for (i = 0; i < h->col; i++)
1.196 schwarze 993: putchar(' ');
1.197 schwarze 994: }
995: h->flags &= ~HTML_NOSPACE;
996: }
997:
998: /*
999: * Print or buffer some characters
1000: * depending on the current HTML output buffer state.
1001: */
1002: static void
1003: print_word(struct html *h, const char *cp)
1004: {
1005: while (*cp != '\0')
1006: print_byte(h, *cp++);
1.196 schwarze 1007: }
1.194 schwarze 1008:
1009: /*
1010: * Calculate the scaling unit passed in a `-width' argument. This uses
1011: * either a native scaling unit (e.g., 1i, 2m) or the string length of
1012: * the value.
1013: */
1014: static void
1015: a2width(const char *p, struct roffsu *su)
1016: {
1.213 schwarze 1017: const char *end;
1018:
1019: end = a2roffsu(p, su, SCALE_MAX);
1020: if (end == NULL || *end != '\0') {
1.194 schwarze 1021: su->unit = SCALE_EN;
1022: su->scale = html_strlen(p);
1023: } else if (su->scale < 0.0)
1024: su->scale = 0.0;
1.68 kristaps 1025: }
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