Annotation of mandoc/html.c, Revision 1.218
1.218 ! schwarze 1: /* $Id: html.c,v 1.217 2017/07/14 16:06:44 schwarze Exp $ */
1.1 kristaps 2: /*
1.176 schwarze 3: * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.194 schwarze 4: * Copyright (c) 2011-2015, 2017 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},
62: {"h1", HTML_NLAROUND},
63: {"h2", HTML_NLAROUND},
64: {"span", 0},
65: {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
66: {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
67: {"a", 0},
68: {"table", HTML_NLALL | HTML_INDENT},
1.205 schwarze 69: {"colgroup", HTML_NLALL | HTML_INDENT},
1.196 schwarze 70: {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL},
71: {"tr", HTML_NLALL | HTML_INDENT},
72: {"td", HTML_NLAROUND},
73: {"li", HTML_NLAROUND | HTML_INDENT},
74: {"ul", HTML_NLALL | HTML_INDENT},
75: {"ol", HTML_NLALL | HTML_INDENT},
76: {"dl", HTML_NLALL | HTML_INDENT},
77: {"dt", HTML_NLAROUND},
78: {"dd", HTML_NLAROUND | HTML_INDENT},
79: {"pre", HTML_NLALL | HTML_NOINDENT},
1.207 schwarze 80: {"var", 0},
1.206 schwarze 81: {"cite", 0},
1.196 schwarze 82: {"b", 0},
83: {"i", 0},
84: {"code", 0},
85: {"small", 0},
86: {"style", HTML_NLALL | HTML_INDENT},
87: {"math", HTML_NLALL | HTML_INDENT},
88: {"mrow", 0},
89: {"mi", 0},
1.215 schwarze 90: {"mn", 0},
1.196 schwarze 91: {"mo", 0},
92: {"msup", 0},
93: {"msub", 0},
94: {"msubsup", 0},
95: {"mfrac", 0},
96: {"msqrt", 0},
97: {"mfenced", 0},
98: {"mtable", 0},
99: {"mtr", 0},
100: {"mtd", 0},
101: {"munderover", 0},
102: {"munder", 0},
103: {"mover", 0},
1.90 kristaps 104: };
105:
1.140 kristaps 106: static const char *const roffscales[SCALE_MAX] = {
107: "cm", /* SCALE_CM */
108: "in", /* SCALE_IN */
109: "pc", /* SCALE_PC */
110: "pt", /* SCALE_PT */
111: "em", /* SCALE_EM */
112: "em", /* SCALE_MM */
113: "ex", /* SCALE_EN */
114: "ex", /* SCALE_BU */
115: "em", /* SCALE_VS */
116: "ex", /* SCALE_FS */
117: };
118:
1.194 schwarze 119: static void a2width(const char *, struct roffsu *);
1.197 schwarze 120: static void print_byte(struct html *, char);
121: static void print_endword(struct html *);
122: static void print_indent(struct html *);
123: static void print_word(struct html *, const char *);
124:
1.184 schwarze 125: static void print_ctag(struct html *, struct tag *);
1.197 schwarze 126: static int print_escape(struct html *, char);
1.195 schwarze 127: static int print_encode(struct html *, const char *, const char *, int);
128: static void print_href(struct html *, const char *, const char *, int);
1.141 kristaps 129: static void print_metaf(struct html *, enum mandoc_esc);
1.82 kristaps 130:
1.156 schwarze 131:
1.180 schwarze 132: void *
1.191 schwarze 133: html_alloc(const struct manoutput *outopts)
1.10 kristaps 134: {
1.30 kristaps 135: struct html *h;
136:
1.128 kristaps 137: h = mandoc_calloc(1, sizeof(struct html));
1.10 kristaps 138:
1.204 schwarze 139: h->tag = NULL;
1.186 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;
1.43 kristaps 145:
1.188 schwarze 146: return h;
1.29 kristaps 147: }
1.10 kristaps 148:
1.29 kristaps 149: void
150: html_free(void *p)
151: {
1.30 kristaps 152: struct tag *tag;
153: struct html *h;
154:
155: h = (struct html *)p;
1.37 kristaps 156:
1.204 schwarze 157: while ((tag = h->tag) != NULL) {
158: h->tag = tag->next;
1.30 kristaps 159: free(tag);
160: }
1.53 kristaps 161:
1.30 kristaps 162: free(h);
1.10 kristaps 163: }
1.2 kristaps 164:
1.51 kristaps 165: void
1.29 kristaps 166: print_gen_head(struct html *h)
167: {
1.165 kristaps 168: struct tag *t;
1.41 kristaps 169:
1.194 schwarze 170: print_otag(h, TAG_META, "?", "charset", "utf-8");
1.165 kristaps 171:
1.168 kristaps 172: /*
173: * Print a default style-sheet.
174: */
1.196 schwarze 175:
1.194 schwarze 176: t = print_otag(h, TAG_STYLE, "");
1.196 schwarze 177: print_text(h, "table.head, table.foot { width: 100%; }");
1.197 schwarze 178: print_endline(h);
1.196 schwarze 179: print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }");
1.197 schwarze 180: print_endline(h);
1.196 schwarze 181: print_text(h, "td.head-vol { text-align: center; }");
1.197 schwarze 182: print_endline(h);
1.198 schwarze 183: print_text(h, "div.Pp { margin: 1ex 0ex; }");
1.165 kristaps 184: print_tagq(h, t);
1.41 kristaps 185:
1.194 schwarze 186: if (h->style)
187: print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet",
188: h->style, "type", "text/css", "media", "all");
1.4 kristaps 189: }
190:
1.126 schwarze 191: static void
1.132 kristaps 192: print_metaf(struct html *h, enum mandoc_esc deco)
1.88 kristaps 193: {
1.90 kristaps 194: enum htmlfont font;
1.88 kristaps 195:
196: switch (deco) {
1.156 schwarze 197: case ESCAPE_FONTPREV:
1.90 kristaps 198: font = h->metal;
1.88 kristaps 199: break;
1.156 schwarze 200: case ESCAPE_FONTITALIC:
1.90 kristaps 201: font = HTMLFONT_ITALIC;
202: break;
1.156 schwarze 203: case ESCAPE_FONTBOLD:
1.90 kristaps 204: font = HTMLFONT_BOLD;
1.88 kristaps 205: break;
1.156 schwarze 206: case ESCAPE_FONTBI:
1.152 schwarze 207: font = HTMLFONT_BI;
208: break;
1.156 schwarze 209: case ESCAPE_FONT:
210: case ESCAPE_FONTROMAN:
1.90 kristaps 211: font = HTMLFONT_NONE;
1.88 kristaps 212: break;
213: default:
214: abort();
215: }
216:
1.122 kristaps 217: if (h->metaf) {
218: print_tagq(h, h->metaf);
219: h->metaf = NULL;
220: }
221:
222: h->metal = h->metac;
223: h->metac = font;
224:
1.152 schwarze 225: switch (font) {
1.156 schwarze 226: case HTMLFONT_ITALIC:
1.194 schwarze 227: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 228: break;
1.156 schwarze 229: case HTMLFONT_BOLD:
1.194 schwarze 230: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 231: break;
1.156 schwarze 232: case HTMLFONT_BI:
1.194 schwarze 233: h->metaf = print_otag(h, TAG_B, "");
234: print_otag(h, TAG_I, "");
1.152 schwarze 235: break;
236: default:
237: break;
238: }
1.210 schwarze 239: }
240:
241: char *
242: html_make_id(const struct roff_node *n)
243: {
244: const struct roff_node *nch;
245: char *buf, *cp;
246:
247: for (nch = n->child; nch != NULL; nch = nch->next)
248: if (nch->type != ROFFT_TEXT)
249: return NULL;
250:
251: buf = NULL;
252: deroff(&buf, n);
253:
254: /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */
255:
256: for (cp = buf; *cp != '\0'; cp++)
257: if (*cp == ' ')
258: *cp = '_';
259:
260: return buf;
1.88 kristaps 261: }
262:
1.138 kristaps 263: int
264: html_strlen(const char *cp)
265: {
1.151 schwarze 266: size_t rsz;
267: int skip, sz;
1.138 kristaps 268:
269: /*
270: * Account for escaped sequences within string length
271: * calculations. This follows the logic in term_strlen() as we
272: * must calculate the width of produced strings.
273: * Assume that characters are always width of "1". This is
274: * hacky, but it gets the job done for approximation of widths.
275: */
276:
277: sz = 0;
1.151 schwarze 278: skip = 0;
279: while (1) {
280: rsz = strcspn(cp, "\\");
281: if (rsz) {
282: cp += rsz;
283: if (skip) {
284: skip = 0;
285: rsz--;
286: }
287: sz += rsz;
288: }
289: if ('\0' == *cp)
290: break;
291: cp++;
292: switch (mandoc_escape(&cp, NULL, NULL)) {
1.156 schwarze 293: case ESCAPE_ERROR:
1.188 schwarze 294: return sz;
1.156 schwarze 295: case ESCAPE_UNICODE:
296: case ESCAPE_NUMBERED:
297: case ESCAPE_SPECIAL:
1.185 schwarze 298: case ESCAPE_OVERSTRIKE:
1.151 schwarze 299: if (skip)
300: skip = 0;
301: else
302: sz++;
303: break;
1.156 schwarze 304: case ESCAPE_SKIPCHAR:
1.151 schwarze 305: skip = 1;
1.138 kristaps 306: break;
307: default:
308: break;
309: }
310: }
1.188 schwarze 311: return sz;
1.138 kristaps 312: }
1.88 kristaps 313:
1.85 kristaps 314: static int
1.197 schwarze 315: print_escape(struct html *h, char c)
1.159 schwarze 316: {
317:
318: switch (c) {
319: case '<':
1.197 schwarze 320: print_word(h, "<");
1.159 schwarze 321: break;
322: case '>':
1.197 schwarze 323: print_word(h, ">");
1.159 schwarze 324: break;
325: case '&':
1.197 schwarze 326: print_word(h, "&");
1.159 schwarze 327: break;
328: case '"':
1.197 schwarze 329: print_word(h, """);
1.159 schwarze 330: break;
331: case ASCII_NBRSP:
1.197 schwarze 332: print_word(h, " ");
1.159 schwarze 333: break;
334: case ASCII_HYPH:
1.197 schwarze 335: print_byte(h, '-');
1.189 schwarze 336: break;
1.159 schwarze 337: case ASCII_BREAK:
338: break;
339: default:
1.188 schwarze 340: return 0;
1.159 schwarze 341: }
1.188 schwarze 342: return 1;
1.159 schwarze 343: }
344:
345: static int
1.195 schwarze 346: print_encode(struct html *h, const char *p, const char *pend, int norecurse)
1.29 kristaps 347: {
1.197 schwarze 348: char numbuf[16];
1.214 schwarze 349: struct tag *t;
350: const char *seq;
1.77 kristaps 351: size_t sz;
1.214 schwarze 352: int c, len, breakline, nospace;
1.132 kristaps 353: enum mandoc_esc esc;
1.214 schwarze 354: static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"',
1.154 schwarze 355: ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' };
1.14 kristaps 356:
1.195 schwarze 357: if (pend == NULL)
358: pend = strchr(p, '\0');
359:
1.214 schwarze 360: breakline = 0;
1.85 kristaps 361: nospace = 0;
362:
1.195 schwarze 363: while (p < pend) {
1.151 schwarze 364: if (HTML_SKIPCHAR & h->flags && '\\' != *p) {
365: h->flags &= ~HTML_SKIPCHAR;
366: p++;
367: continue;
368: }
369:
1.197 schwarze 370: for (sz = strcspn(p, rejs); sz-- && p < pend; p++)
1.214 schwarze 371: print_byte(h, *p);
372:
373: if (breakline &&
374: (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) {
375: t = print_otag(h, TAG_DIV, "");
376: print_text(h, "\\~");
377: print_tagq(h, t);
378: breakline = 0;
379: while (p < pend && (*p == ' ' || *p == ASCII_NBRSP))
380: p++;
381: continue;
382: }
1.77 kristaps 383:
1.195 schwarze 384: if (p >= pend)
1.132 kristaps 385: break;
386:
1.214 schwarze 387: if (*p == ' ') {
388: print_endword(h);
389: p++;
390: continue;
391: }
392:
1.197 schwarze 393: if (print_escape(h, *p++))
1.154 schwarze 394: continue;
1.77 kristaps 395:
1.132 kristaps 396: esc = mandoc_escape(&p, &seq, &len);
397: if (ESCAPE_ERROR == esc)
398: break;
1.82 kristaps 399:
1.132 kristaps 400: switch (esc) {
1.156 schwarze 401: case ESCAPE_FONT:
402: case ESCAPE_FONTPREV:
403: case ESCAPE_FONTBOLD:
404: case ESCAPE_FONTITALIC:
405: case ESCAPE_FONTBI:
406: case ESCAPE_FONTROMAN:
1.151 schwarze 407: if (0 == norecurse)
408: print_metaf(h, esc);
409: continue;
1.156 schwarze 410: case ESCAPE_SKIPCHAR:
1.151 schwarze 411: h->flags |= HTML_SKIPCHAR;
412: continue;
413: default:
414: break;
415: }
416:
417: if (h->flags & HTML_SKIPCHAR) {
418: h->flags &= ~HTML_SKIPCHAR;
419: continue;
420: }
421:
422: switch (esc) {
1.156 schwarze 423: case ESCAPE_UNICODE:
1.159 schwarze 424: /* Skip past "u" header. */
1.144 kristaps 425: c = mchars_num2uc(seq + 1, len - 1);
426: break;
1.156 schwarze 427: case ESCAPE_NUMBERED:
1.141 kristaps 428: c = mchars_num2char(seq, len);
1.181 schwarze 429: if (c < 0)
430: continue;
1.82 kristaps 431: break;
1.156 schwarze 432: case ESCAPE_SPECIAL:
1.191 schwarze 433: c = mchars_spec2cp(seq, len);
1.181 schwarze 434: if (c <= 0)
435: continue;
1.132 kristaps 436: break;
1.214 schwarze 437: case ESCAPE_BREAK:
438: breakline = 1;
439: continue;
1.156 schwarze 440: case ESCAPE_NOSPACE:
1.132 kristaps 441: if ('\0' == *p)
442: nospace = 1;
1.179 schwarze 443: continue;
1.185 schwarze 444: case ESCAPE_OVERSTRIKE:
445: if (len == 0)
446: continue;
447: c = seq[len - 1];
448: break;
1.82 kristaps 449: default:
1.179 schwarze 450: continue;
1.82 kristaps 451: }
1.181 schwarze 452: if ((c < 0x20 && c != 0x09) ||
453: (c > 0x7E && c < 0xA0))
1.179 schwarze 454: c = 0xFFFD;
1.197 schwarze 455: if (c > 0x7E) {
1.216 schwarze 456: (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c);
1.197 schwarze 457: print_word(h, numbuf);
458: } else if (print_escape(h, c) == 0)
459: print_byte(h, c);
1.32 kristaps 460: }
1.85 kristaps 461:
1.188 schwarze 462: return nospace;
1.14 kristaps 463: }
464:
1.94 kristaps 465: static void
1.195 schwarze 466: print_href(struct html *h, const char *name, const char *sec, int man)
1.94 kristaps 467: {
1.195 schwarze 468: const char *p, *pp;
469:
470: pp = man ? h->base_man : h->base_includes;
471: while ((p = strchr(pp, '%')) != NULL) {
472: print_encode(h, pp, p, 1);
473: if (man && p[1] == 'S') {
474: if (sec == NULL)
1.197 schwarze 475: print_byte(h, '1');
1.195 schwarze 476: else
477: print_encode(h, sec, NULL, 1);
478: } else if ((man && p[1] == 'N') ||
479: (man == 0 && p[1] == 'I'))
480: print_encode(h, name, NULL, 1);
481: else
482: print_encode(h, p, p + 2, 1);
483: pp = p + 2;
484: }
485: if (*pp != '\0')
486: print_encode(h, pp, NULL, 1);
1.94 kristaps 487: }
488:
1.51 kristaps 489: struct tag *
1.194 schwarze 490: print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
1.14 kristaps 491: {
1.194 schwarze 492: va_list ap;
493: struct roffsu mysu, *su;
1.197 schwarze 494: char numbuf[16];
1.30 kristaps 495: struct tag *t;
1.195 schwarze 496: const char *attr;
1.203 schwarze 497: char *arg1, *arg2;
1.195 schwarze 498: double v;
1.196 schwarze 499: int i, have_style, tflags;
500:
501: tflags = htmltags[tag].flags;
1.30 kristaps 502:
1.204 schwarze 503: /* Push this tag onto the stack of open scopes. */
1.94 kristaps 504:
1.196 schwarze 505: if ((tflags & HTML_NOSTACK) == 0) {
1.128 kristaps 506: t = mandoc_malloc(sizeof(struct tag));
1.30 kristaps 507: t->tag = tag;
1.204 schwarze 508: t->next = h->tag;
509: h->tag = t;
1.30 kristaps 510: } else
511: t = NULL;
1.29 kristaps 512:
1.196 schwarze 513: if (tflags & HTML_NLBEFORE)
1.197 schwarze 514: print_endline(h);
515: if (h->col == 0)
516: print_indent(h);
1.196 schwarze 517: else if ((h->flags & HTML_NOSPACE) == 0) {
518: if (h->flags & HTML_KEEP)
1.216 schwarze 519: print_word(h, " ");
1.196 schwarze 520: else {
521: if (h->flags & HTML_PREKEEP)
522: h->flags |= HTML_KEEP;
1.197 schwarze 523: print_endword(h);
1.105 kristaps 524: }
1.196 schwarze 525: }
1.29 kristaps 526:
1.109 kristaps 527: if ( ! (h->flags & HTML_NONOSPACE))
528: h->flags &= ~HTML_NOSPACE;
1.110 kristaps 529: else
530: h->flags |= HTML_NOSPACE;
1.109 kristaps 531:
1.94 kristaps 532: /* Print out the tag name and attributes. */
533:
1.197 schwarze 534: print_byte(h, '<');
535: print_word(h, htmltags[tag].name);
1.194 schwarze 536:
537: va_start(ap, fmt);
538:
539: have_style = 0;
540: while (*fmt != '\0') {
541: if (*fmt == 's') {
542: have_style = 1;
543: fmt++;
544: break;
545: }
1.203 schwarze 546:
547: /* Parse a non-style attribute and its arguments. */
548:
549: arg1 = va_arg(ap, char *);
1.194 schwarze 550: switch (*fmt++) {
551: case 'c':
1.195 schwarze 552: attr = "class";
1.194 schwarze 553: break;
554: case 'h':
1.195 schwarze 555: attr = "href";
1.194 schwarze 556: break;
557: case 'i':
1.195 schwarze 558: attr = "id";
1.194 schwarze 559: break;
560: case '?':
1.203 schwarze 561: attr = arg1;
562: arg1 = va_arg(ap, char *);
1.194 schwarze 563: break;
564: default:
565: abort();
566: }
1.203 schwarze 567: arg2 = NULL;
568: if (*fmt == 'M')
569: arg2 = va_arg(ap, char *);
570: if (arg1 == NULL)
571: continue;
572:
573: /* Print the non-style attributes. */
574:
1.197 schwarze 575: print_byte(h, ' ');
576: print_word(h, attr);
577: print_byte(h, '=');
578: print_byte(h, '"');
1.195 schwarze 579: switch (*fmt) {
1.208 schwarze 580: case 'I':
581: print_href(h, arg1, NULL, 0);
582: fmt++;
583: break;
1.195 schwarze 584: case 'M':
1.203 schwarze 585: print_href(h, arg1, arg2, 1);
1.195 schwarze 586: fmt++;
587: break;
1.208 schwarze 588: case 'R':
589: print_byte(h, '#');
590: print_encode(h, arg1, NULL, 1);
1.195 schwarze 591: fmt++;
592: break;
1.208 schwarze 593: case 'T':
594: print_encode(h, arg1, NULL, 1);
595: print_word(h, "\" title=\"");
596: print_encode(h, arg1, NULL, 1);
1.195 schwarze 597: fmt++;
1.208 schwarze 598: break;
1.195 schwarze 599: default:
1.203 schwarze 600: print_encode(h, arg1, NULL, 1);
1.195 schwarze 601: break;
602: }
1.197 schwarze 603: print_byte(h, '"');
1.194 schwarze 604: }
605:
606: /* Print out styles. */
607:
608: while (*fmt != '\0') {
1.203 schwarze 609: arg1 = NULL;
610: su = NULL;
1.194 schwarze 611:
612: /* First letter: input argument type. */
613:
614: switch (*fmt++) {
615: case 'h':
616: i = va_arg(ap, int);
1.203 schwarze 617: su = &mysu;
1.194 schwarze 618: SCALE_HS_INIT(su, i);
619: break;
620: case 's':
1.203 schwarze 621: arg1 = va_arg(ap, char *);
1.194 schwarze 622: break;
623: case 'u':
624: su = va_arg(ap, struct roffsu *);
625: break;
626: case 'w':
1.218 ! schwarze 627: if ((arg2 = va_arg(ap, char *)) == NULL) {
! 628: if (*fmt == '+')
! 629: fmt++;
! 630: if (*fmt == '-')
! 631: fmt++;
1.203 schwarze 632: break;
1.218 ! schwarze 633: }
1.203 schwarze 634: su = &mysu;
635: a2width(arg2, su);
1.211 schwarze 636: if (*fmt == '+') {
637: /* Increase to make even bold text fit. */
1.212 schwarze 638: su->scale *= 1.2;
1.211 schwarze 639: /* Add padding. */
640: su->scale += 3.0;
641: fmt++;
642: }
643: if (*fmt == '-') {
1.201 schwarze 644: su->scale *= -1.0;
1.211 schwarze 645: fmt++;
646: }
1.194 schwarze 647: break;
648: default:
649: abort();
650: }
651:
652: /* Second letter: style name. */
653:
654: switch (*fmt++) {
655: case 'h':
1.195 schwarze 656: attr = "height";
1.194 schwarze 657: break;
658: case 'i':
1.195 schwarze 659: attr = "text-indent";
1.194 schwarze 660: break;
661: case 'l':
1.195 schwarze 662: attr = "margin-left";
1.194 schwarze 663: break;
664: case 'w':
1.195 schwarze 665: attr = "width";
1.194 schwarze 666: break;
667: case 'W':
1.195 schwarze 668: attr = "min-width";
1.194 schwarze 669: break;
670: case '?':
1.203 schwarze 671: attr = arg1;
672: arg1 = va_arg(ap, char *);
673: break;
1.194 schwarze 674: default:
675: abort();
676: }
1.203 schwarze 677: if (su == NULL && arg1 == NULL)
678: continue;
679:
680: if (have_style == 1)
681: print_word(h, " style=\"");
682: else
683: print_byte(h, ' ');
1.197 schwarze 684: print_word(h, attr);
685: print_byte(h, ':');
686: print_byte(h, ' ');
1.203 schwarze 687: if (su != NULL) {
688: v = su->scale;
689: if (su->unit == SCALE_MM && (v /= 100.0) == 0.0)
690: v = 1.0;
691: else if (su->unit == SCALE_BU)
692: v /= 24.0;
693: (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v);
694: print_word(h, numbuf);
695: print_word(h, roffscales[su->unit]);
696: } else
697: print_word(h, arg1);
1.197 schwarze 698: print_byte(h, ';');
1.203 schwarze 699: have_style = 2;
1.194 schwarze 700: }
1.203 schwarze 701: if (have_style == 2)
1.197 schwarze 702: print_byte(h, '"');
1.194 schwarze 703:
704: va_end(ap);
1.94 kristaps 705:
1.172 kristaps 706: /* Accommodate for "well-formed" singleton escaping. */
1.94 kristaps 707:
1.93 kristaps 708: if (HTML_AUTOCLOSE & htmltags[tag].flags)
1.197 schwarze 709: print_byte(h, '/');
1.93 kristaps 710:
1.197 schwarze 711: print_byte(h, '>');
1.14 kristaps 712:
1.196 schwarze 713: if (tflags & HTML_NLBEGIN)
1.197 schwarze 714: print_endline(h);
1.196 schwarze 715: else
716: h->flags |= HTML_NOSPACE;
1.117 kristaps 717:
1.196 schwarze 718: if (tflags & HTML_INDENT)
719: h->indent++;
720: if (tflags & HTML_NOINDENT)
721: h->noindent++;
1.117 kristaps 722:
1.188 schwarze 723: return t;
1.14 kristaps 724: }
725:
1.29 kristaps 726: static void
1.184 schwarze 727: print_ctag(struct html *h, struct tag *tag)
1.14 kristaps 728: {
1.196 schwarze 729: int tflags;
1.156 schwarze 730:
1.184 schwarze 731: /*
732: * Remember to close out and nullify the current
733: * meta-font and table, if applicable.
734: */
735: if (tag == h->metaf)
736: h->metaf = NULL;
737: if (tag == h->tblt)
738: h->tblt = NULL;
739:
1.196 schwarze 740: tflags = htmltags[tag->tag].flags;
741:
742: if (tflags & HTML_INDENT)
743: h->indent--;
744: if (tflags & HTML_NOINDENT)
745: h->noindent--;
746: if (tflags & HTML_NLEND)
1.197 schwarze 747: print_endline(h);
748: print_indent(h);
749: print_byte(h, '<');
750: print_byte(h, '/');
751: print_word(h, htmltags[tag->tag].name);
752: print_byte(h, '>');
1.196 schwarze 753: if (tflags & HTML_NLAFTER)
1.197 schwarze 754: print_endline(h);
1.184 schwarze 755:
1.204 schwarze 756: h->tag = tag->next;
1.184 schwarze 757: free(tag);
1.14 kristaps 758: }
759:
1.51 kristaps 760: void
1.93 kristaps 761: print_gen_decls(struct html *h)
1.1 kristaps 762: {
1.197 schwarze 763: print_word(h, "<!DOCTYPE html>");
764: print_endline(h);
1.1 kristaps 765: }
766:
1.51 kristaps 767: void
1.104 kristaps 768: print_text(struct html *h, const char *word)
1.1 kristaps 769: {
1.197 schwarze 770: if (h->col && (h->flags & HTML_NOSPACE) == 0) {
1.105 kristaps 771: if ( ! (HTML_KEEP & h->flags)) {
772: if (HTML_PREKEEP & h->flags)
773: h->flags |= HTML_KEEP;
1.197 schwarze 774: print_endword(h);
1.105 kristaps 775: } else
1.216 schwarze 776: print_word(h, " ");
1.105 kristaps 777: }
1.30 kristaps 778:
1.122 kristaps 779: assert(NULL == h->metaf);
1.152 schwarze 780: switch (h->metac) {
1.156 schwarze 781: case HTMLFONT_ITALIC:
1.194 schwarze 782: h->metaf = print_otag(h, TAG_I, "");
1.152 schwarze 783: break;
1.156 schwarze 784: case HTMLFONT_BOLD:
1.194 schwarze 785: h->metaf = print_otag(h, TAG_B, "");
1.152 schwarze 786: break;
1.156 schwarze 787: case HTMLFONT_BI:
1.194 schwarze 788: h->metaf = print_otag(h, TAG_B, "");
789: print_otag(h, TAG_I, "");
1.152 schwarze 790: break;
791: default:
1.197 schwarze 792: print_indent(h);
1.152 schwarze 793: break;
794: }
1.122 kristaps 795:
1.104 kristaps 796: assert(word);
1.195 schwarze 797: if ( ! print_encode(h, word, NULL, 0)) {
1.109 kristaps 798: if ( ! (h->flags & HTML_NONOSPACE))
799: h->flags &= ~HTML_NOSPACE;
1.183 schwarze 800: h->flags &= ~HTML_NONEWLINE;
1.149 kristaps 801: } else
1.183 schwarze 802: h->flags |= HTML_NOSPACE | HTML_NONEWLINE;
1.122 kristaps 803:
804: if (h->metaf) {
805: print_tagq(h, h->metaf);
806: h->metaf = NULL;
807: }
1.113 schwarze 808:
809: h->flags &= ~HTML_IGNDELIM;
1.1 kristaps 810: }
1.30 kristaps 811:
1.51 kristaps 812: void
1.30 kristaps 813: print_tagq(struct html *h, const struct tag *until)
814: {
815: struct tag *tag;
816:
1.204 schwarze 817: while ((tag = h->tag) != NULL) {
1.184 schwarze 818: print_ctag(h, tag);
1.30 kristaps 819: if (until && tag == until)
820: return;
821: }
822: }
823:
1.51 kristaps 824: void
1.30 kristaps 825: print_stagq(struct html *h, const struct tag *suntil)
826: {
827: struct tag *tag;
828:
1.204 schwarze 829: while ((tag = h->tag) != NULL) {
1.30 kristaps 830: if (suntil && tag == suntil)
831: return;
1.184 schwarze 832: print_ctag(h, tag);
1.30 kristaps 833: }
834: }
1.171 kristaps 835:
836: void
837: print_paragraph(struct html *h)
838: {
839: struct tag *t;
840:
1.198 schwarze 841: t = print_otag(h, TAG_DIV, "c", "Pp");
1.171 kristaps 842: print_tagq(h, t);
843: }
844:
1.197 schwarze 845:
846: /***********************************************************************
847: * Low level output functions.
848: * They implement line breaking using a short static buffer.
849: ***********************************************************************/
850:
851: /*
852: * Buffer one HTML output byte.
853: * If the buffer is full, flush and deactivate it and start a new line.
854: * If the buffer is inactive, print directly.
855: */
856: static void
857: print_byte(struct html *h, char c)
858: {
859: if ((h->flags & HTML_BUFFER) == 0) {
860: putchar(c);
861: h->col++;
862: return;
863: }
864:
865: if (h->col + h->bufcol < sizeof(h->buf)) {
866: h->buf[h->bufcol++] = c;
867: return;
868: }
869:
870: putchar('\n');
871: h->col = 0;
872: print_indent(h);
873: putchar(' ');
874: putchar(' ');
875: fwrite(h->buf, h->bufcol, 1, stdout);
876: putchar(c);
877: h->col = (h->indent + 1) * 2 + h->bufcol + 1;
878: h->bufcol = 0;
879: h->flags &= ~HTML_BUFFER;
880: }
881:
1.196 schwarze 882: /*
883: * If something was printed on the current output line, end it.
1.197 schwarze 884: * Not to be called right after print_indent().
1.196 schwarze 885: */
1.202 schwarze 886: void
1.197 schwarze 887: print_endline(struct html *h)
1.196 schwarze 888: {
1.197 schwarze 889: if (h->col == 0)
1.196 schwarze 890: return;
891:
1.197 schwarze 892: if (h->bufcol) {
893: putchar(' ');
894: fwrite(h->buf, h->bufcol, 1, stdout);
895: h->bufcol = 0;
896: }
1.196 schwarze 897: putchar('\n');
1.197 schwarze 898: h->col = 0;
899: h->flags |= HTML_NOSPACE;
900: h->flags &= ~HTML_BUFFER;
901: }
902:
903: /*
904: * Flush the HTML output buffer.
905: * If it is inactive, activate it.
906: */
907: static void
908: print_endword(struct html *h)
909: {
910: if (h->noindent) {
911: print_byte(h, ' ');
912: return;
913: }
914:
915: if ((h->flags & HTML_BUFFER) == 0) {
916: h->col++;
917: h->flags |= HTML_BUFFER;
918: } else if (h->bufcol) {
919: putchar(' ');
920: fwrite(h->buf, h->bufcol, 1, stdout);
921: h->col += h->bufcol + 1;
922: }
923: h->bufcol = 0;
1.196 schwarze 924: }
925:
926: /*
927: * If at the beginning of a new output line,
928: * perform indentation and mark the line as containing output.
929: * Make sure to really produce some output right afterwards,
930: * but do not use print_otag() for producing it.
931: */
932: static void
1.197 schwarze 933: print_indent(struct html *h)
1.196 schwarze 934: {
1.197 schwarze 935: size_t i;
1.196 schwarze 936:
1.197 schwarze 937: if (h->col)
1.196 schwarze 938: return;
939:
1.197 schwarze 940: if (h->noindent == 0) {
941: h->col = h->indent * 2;
942: for (i = 0; i < h->col; i++)
1.196 schwarze 943: putchar(' ');
1.197 schwarze 944: }
945: h->flags &= ~HTML_NOSPACE;
946: }
947:
948: /*
949: * Print or buffer some characters
950: * depending on the current HTML output buffer state.
951: */
952: static void
953: print_word(struct html *h, const char *cp)
954: {
955: while (*cp != '\0')
956: print_byte(h, *cp++);
1.196 schwarze 957: }
1.194 schwarze 958:
959: /*
960: * Calculate the scaling unit passed in a `-width' argument. This uses
961: * either a native scaling unit (e.g., 1i, 2m) or the string length of
962: * the value.
963: */
964: static void
965: a2width(const char *p, struct roffsu *su)
966: {
1.213 schwarze 967: const char *end;
968:
969: end = a2roffsu(p, su, SCALE_MAX);
970: if (end == NULL || *end != '\0') {
1.194 schwarze 971: su->unit = SCALE_EN;
972: su->scale = html_strlen(p);
973: } else if (su->scale < 0.0)
974: su->scale = 0.0;
1.68 kristaps 975: }
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