1 /*      $Id: mdoc_html.c,v 1.186 2013/12/24 20:45:27 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17 #ifdef HAVE_CONFIG_H
  18 #include "config.h"
  19 #endif
  20 
  21 #include <sys/types.h>
  22 
  23 #include <assert.h>
  24 #include <ctype.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <unistd.h>
  29 
  30 #include "mandoc.h"
  31 #include "out.h"
  32 #include "html.h"
  33 #include "mdoc.h"
  34 #include "main.h"
  35 
  36 #define INDENT           5
  37 
  38 #define MDOC_ARGS         const struct mdoc_meta *meta, \
  39                           const struct mdoc_node *n, \
  40                           struct html *h
  41 
  42 #ifndef MIN
  43 #define MIN(a,b)        ((/*CONSTCOND*/(a)<(b))?(a):(b))
  44 #endif
  45 
  46 struct  htmlmdoc {
  47         int             (*pre)(MDOC_ARGS);
  48         void            (*post)(MDOC_ARGS);
  49 };
  50 
  51 static  void              print_mdoc(MDOC_ARGS);
  52 static  void              print_mdoc_head(MDOC_ARGS);
  53 static  void              print_mdoc_node(MDOC_ARGS);
  54 static  void              print_mdoc_nodelist(MDOC_ARGS);
  55 static  void              synopsis_pre(struct html *, 
  56                                 const struct mdoc_node *);
  57 
  58 static  void              a2width(const char *, struct roffsu *);
  59 static  void              a2offs(const char *, struct roffsu *);
  60 
  61 static  void              mdoc_root_post(MDOC_ARGS);
  62 static  int               mdoc_root_pre(MDOC_ARGS);
  63 
  64 static  void              mdoc__x_post(MDOC_ARGS);
  65 static  int               mdoc__x_pre(MDOC_ARGS);
  66 static  int               mdoc_ad_pre(MDOC_ARGS);
  67 static  int               mdoc_an_pre(MDOC_ARGS);
  68 static  int               mdoc_ap_pre(MDOC_ARGS);
  69 static  int               mdoc_ar_pre(MDOC_ARGS);
  70 static  int               mdoc_bd_pre(MDOC_ARGS);
  71 static  int               mdoc_bf_pre(MDOC_ARGS);
  72 static  void              mdoc_bk_post(MDOC_ARGS);
  73 static  int               mdoc_bk_pre(MDOC_ARGS);
  74 static  int               mdoc_bl_pre(MDOC_ARGS);
  75 static  int               mdoc_bt_pre(MDOC_ARGS);
  76 static  int               mdoc_bx_pre(MDOC_ARGS);
  77 static  int               mdoc_cd_pre(MDOC_ARGS);
  78 static  int               mdoc_d1_pre(MDOC_ARGS);
  79 static  int               mdoc_dv_pre(MDOC_ARGS);
  80 static  int               mdoc_fa_pre(MDOC_ARGS);
  81 static  int               mdoc_fd_pre(MDOC_ARGS);
  82 static  int               mdoc_fl_pre(MDOC_ARGS);
  83 static  int               mdoc_fn_pre(MDOC_ARGS);
  84 static  int               mdoc_ft_pre(MDOC_ARGS);
  85 static  int               mdoc_em_pre(MDOC_ARGS);
  86 static  int               mdoc_er_pre(MDOC_ARGS);
  87 static  int               mdoc_ev_pre(MDOC_ARGS);
  88 static  int               mdoc_ex_pre(MDOC_ARGS);
  89 static  void              mdoc_fo_post(MDOC_ARGS);
  90 static  int               mdoc_fo_pre(MDOC_ARGS);
  91 static  int               mdoc_ic_pre(MDOC_ARGS);
  92 static  int               mdoc_igndelim_pre(MDOC_ARGS);
  93 static  int               mdoc_in_pre(MDOC_ARGS);
  94 static  int               mdoc_it_pre(MDOC_ARGS);
  95 static  int               mdoc_lb_pre(MDOC_ARGS);
  96 static  int               mdoc_li_pre(MDOC_ARGS);
  97 static  int               mdoc_lk_pre(MDOC_ARGS);
  98 static  int               mdoc_mt_pre(MDOC_ARGS);
  99 static  int               mdoc_ms_pre(MDOC_ARGS);
 100 static  int               mdoc_nd_pre(MDOC_ARGS);
 101 static  int               mdoc_nm_pre(MDOC_ARGS);
 102 static  int               mdoc_ns_pre(MDOC_ARGS);
 103 static  int               mdoc_pa_pre(MDOC_ARGS);
 104 static  void              mdoc_pf_post(MDOC_ARGS);
 105 static  int               mdoc_pp_pre(MDOC_ARGS);
 106 static  void              mdoc_quote_post(MDOC_ARGS);
 107 static  int               mdoc_quote_pre(MDOC_ARGS);
 108 static  int               mdoc_rs_pre(MDOC_ARGS);
 109 static  int               mdoc_rv_pre(MDOC_ARGS);
 110 static  int               mdoc_sh_pre(MDOC_ARGS);
 111 static  int               mdoc_sm_pre(MDOC_ARGS);
 112 static  int               mdoc_sp_pre(MDOC_ARGS);
 113 static  int               mdoc_ss_pre(MDOC_ARGS);
 114 static  int               mdoc_sx_pre(MDOC_ARGS);
 115 static  int               mdoc_sy_pre(MDOC_ARGS);
 116 static  int               mdoc_ud_pre(MDOC_ARGS);
 117 static  int               mdoc_va_pre(MDOC_ARGS);
 118 static  int               mdoc_vt_pre(MDOC_ARGS);
 119 static  int               mdoc_xr_pre(MDOC_ARGS);
 120 static  int               mdoc_xx_pre(MDOC_ARGS);
 121 
 122 static  const struct htmlmdoc mdocs[MDOC_MAX] = {
 123         {mdoc_ap_pre, NULL}, /* Ap */
 124         {NULL, NULL}, /* Dd */
 125         {NULL, NULL}, /* Dt */
 126         {NULL, NULL}, /* Os */
 127         {mdoc_sh_pre, NULL }, /* Sh */
 128         {mdoc_ss_pre, NULL }, /* Ss */ 
 129         {mdoc_pp_pre, NULL}, /* Pp */ 
 130         {mdoc_d1_pre, NULL}, /* D1 */
 131         {mdoc_d1_pre, NULL}, /* Dl */
 132         {mdoc_bd_pre, NULL}, /* Bd */
 133         {NULL, NULL}, /* Ed */
 134         {mdoc_bl_pre, NULL}, /* Bl */
 135         {NULL, NULL}, /* El */
 136         {mdoc_it_pre, NULL}, /* It */
 137         {mdoc_ad_pre, NULL}, /* Ad */ 
 138         {mdoc_an_pre, NULL}, /* An */
 139         {mdoc_ar_pre, NULL}, /* Ar */
 140         {mdoc_cd_pre, NULL}, /* Cd */
 141         {mdoc_fl_pre, NULL}, /* Cm */
 142         {mdoc_dv_pre, NULL}, /* Dv */ 
 143         {mdoc_er_pre, NULL}, /* Er */ 
 144         {mdoc_ev_pre, NULL}, /* Ev */ 
 145         {mdoc_ex_pre, NULL}, /* Ex */
 146         {mdoc_fa_pre, NULL}, /* Fa */ 
 147         {mdoc_fd_pre, NULL}, /* Fd */ 
 148         {mdoc_fl_pre, NULL}, /* Fl */
 149         {mdoc_fn_pre, NULL}, /* Fn */ 
 150         {mdoc_ft_pre, NULL}, /* Ft */ 
 151         {mdoc_ic_pre, NULL}, /* Ic */ 
 152         {mdoc_in_pre, NULL}, /* In */ 
 153         {mdoc_li_pre, NULL}, /* Li */
 154         {mdoc_nd_pre, NULL}, /* Nd */ 
 155         {mdoc_nm_pre, NULL}, /* Nm */ 
 156         {mdoc_quote_pre, mdoc_quote_post}, /* Op */
 157         {NULL, NULL}, /* Ot */
 158         {mdoc_pa_pre, NULL}, /* Pa */
 159         {mdoc_rv_pre, NULL}, /* Rv */
 160         {NULL, NULL}, /* St */ 
 161         {mdoc_va_pre, NULL}, /* Va */
 162         {mdoc_vt_pre, NULL}, /* Vt */ 
 163         {mdoc_xr_pre, NULL}, /* Xr */
 164         {mdoc__x_pre, mdoc__x_post}, /* %A */
 165         {mdoc__x_pre, mdoc__x_post}, /* %B */
 166         {mdoc__x_pre, mdoc__x_post}, /* %D */
 167         {mdoc__x_pre, mdoc__x_post}, /* %I */
 168         {mdoc__x_pre, mdoc__x_post}, /* %J */
 169         {mdoc__x_pre, mdoc__x_post}, /* %N */
 170         {mdoc__x_pre, mdoc__x_post}, /* %O */
 171         {mdoc__x_pre, mdoc__x_post}, /* %P */
 172         {mdoc__x_pre, mdoc__x_post}, /* %R */
 173         {mdoc__x_pre, mdoc__x_post}, /* %T */
 174         {mdoc__x_pre, mdoc__x_post}, /* %V */
 175         {NULL, NULL}, /* Ac */
 176         {mdoc_quote_pre, mdoc_quote_post}, /* Ao */
 177         {mdoc_quote_pre, mdoc_quote_post}, /* Aq */
 178         {NULL, NULL}, /* At */
 179         {NULL, NULL}, /* Bc */
 180         {mdoc_bf_pre, NULL}, /* Bf */ 
 181         {mdoc_quote_pre, mdoc_quote_post}, /* Bo */
 182         {mdoc_quote_pre, mdoc_quote_post}, /* Bq */
 183         {mdoc_xx_pre, NULL}, /* Bsx */
 184         {mdoc_bx_pre, NULL}, /* Bx */
 185         {NULL, NULL}, /* Db */
 186         {NULL, NULL}, /* Dc */
 187         {mdoc_quote_pre, mdoc_quote_post}, /* Do */
 188         {mdoc_quote_pre, mdoc_quote_post}, /* Dq */
 189         {NULL, NULL}, /* Ec */ /* FIXME: no space */
 190         {NULL, NULL}, /* Ef */
 191         {mdoc_em_pre, NULL}, /* Em */ 
 192         {mdoc_quote_pre, mdoc_quote_post}, /* Eo */
 193         {mdoc_xx_pre, NULL}, /* Fx */
 194         {mdoc_ms_pre, NULL}, /* Ms */
 195         {mdoc_igndelim_pre, NULL}, /* No */
 196         {mdoc_ns_pre, NULL}, /* Ns */
 197         {mdoc_xx_pre, NULL}, /* Nx */
 198         {mdoc_xx_pre, NULL}, /* Ox */
 199         {NULL, NULL}, /* Pc */
 200         {mdoc_igndelim_pre, mdoc_pf_post}, /* Pf */
 201         {mdoc_quote_pre, mdoc_quote_post}, /* Po */
 202         {mdoc_quote_pre, mdoc_quote_post}, /* Pq */
 203         {NULL, NULL}, /* Qc */
 204         {mdoc_quote_pre, mdoc_quote_post}, /* Ql */
 205         {mdoc_quote_pre, mdoc_quote_post}, /* Qo */
 206         {mdoc_quote_pre, mdoc_quote_post}, /* Qq */
 207         {NULL, NULL}, /* Re */
 208         {mdoc_rs_pre, NULL}, /* Rs */
 209         {NULL, NULL}, /* Sc */
 210         {mdoc_quote_pre, mdoc_quote_post}, /* So */
 211         {mdoc_quote_pre, mdoc_quote_post}, /* Sq */
 212         {mdoc_sm_pre, NULL}, /* Sm */ 
 213         {mdoc_sx_pre, NULL}, /* Sx */
 214         {mdoc_sy_pre, NULL}, /* Sy */
 215         {NULL, NULL}, /* Tn */
 216         {mdoc_xx_pre, NULL}, /* Ux */
 217         {NULL, NULL}, /* Xc */
 218         {NULL, NULL}, /* Xo */
 219         {mdoc_fo_pre, mdoc_fo_post}, /* Fo */ 
 220         {NULL, NULL}, /* Fc */ 
 221         {mdoc_quote_pre, mdoc_quote_post}, /* Oo */
 222         {NULL, NULL}, /* Oc */
 223         {mdoc_bk_pre, mdoc_bk_post}, /* Bk */
 224         {NULL, NULL}, /* Ek */
 225         {mdoc_bt_pre, NULL}, /* Bt */
 226         {NULL, NULL}, /* Hf */
 227         {NULL, NULL}, /* Fr */
 228         {mdoc_ud_pre, NULL}, /* Ud */
 229         {mdoc_lb_pre, NULL}, /* Lb */
 230         {mdoc_pp_pre, NULL}, /* Lp */ 
 231         {mdoc_lk_pre, NULL}, /* Lk */ 
 232         {mdoc_mt_pre, NULL}, /* Mt */ 
 233         {mdoc_quote_pre, mdoc_quote_post}, /* Brq */ 
 234         {mdoc_quote_pre, mdoc_quote_post}, /* Bro */ 
 235         {NULL, NULL}, /* Brc */ 
 236         {mdoc__x_pre, mdoc__x_post}, /* %C */ 
 237         {NULL, NULL}, /* Es */  /* TODO */
 238         {NULL, NULL}, /* En */  /* TODO */
 239         {mdoc_xx_pre, NULL}, /* Dx */ 
 240         {mdoc__x_pre, mdoc__x_post}, /* %Q */ 
 241         {mdoc_sp_pre, NULL}, /* br */
 242         {mdoc_sp_pre, NULL}, /* sp */ 
 243         {mdoc__x_pre, mdoc__x_post}, /* %U */ 
 244         {NULL, NULL}, /* Ta */ 
 245 };
 246 
 247 static  const char * const lists[LIST_MAX] = {
 248         NULL,
 249         "list-bul",
 250         "list-col",
 251         "list-dash",
 252         "list-diag",
 253         "list-enum",
 254         "list-hang",
 255         "list-hyph",
 256         "list-inset",
 257         "list-item",
 258         "list-ohang",
 259         "list-tag"
 260 };
 261 
 262 void
 263 html_mdoc(void *arg, const struct mdoc *mdoc)
 264 {
 265 
 266         print_mdoc(mdoc_meta(mdoc), mdoc_node(mdoc),
 267                         (struct html *)arg);
 268         putchar('\n');
 269 }
 270 
 271 
 272 /*
 273  * Calculate the scaling unit passed in a `-width' argument.  This uses
 274  * either a native scaling unit (e.g., 1i, 2m) or the string length of
 275  * the value.
 276  */
 277 static void
 278 a2width(const char *p, struct roffsu *su)
 279 {
 280 
 281         if ( ! a2roffsu(p, su, SCALE_MAX)) {
 282                 su->unit = SCALE_BU;
 283                 su->scale = html_strlen(p);
 284         }
 285 }
 286 
 287 
 288 /*
 289  * See the same function in mdoc_term.c for documentation.
 290  */
 291 static void
 292 synopsis_pre(struct html *h, const struct mdoc_node *n)
 293 {
 294 
 295         if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
 296                 return;
 297 
 298         if (n->prev->tok == n->tok && 
 299                         MDOC_Fo != n->tok && 
 300                         MDOC_Ft != n->tok && 
 301                         MDOC_Fn != n->tok) {
 302                 print_otag(h, TAG_BR, 0, NULL);
 303                 return;
 304         }
 305 
 306         switch (n->prev->tok) {
 307         case (MDOC_Fd):
 308                 /* FALLTHROUGH */
 309         case (MDOC_Fn):
 310                 /* FALLTHROUGH */
 311         case (MDOC_Fo):
 312                 /* FALLTHROUGH */
 313         case (MDOC_In):
 314                 /* FALLTHROUGH */
 315         case (MDOC_Vt):
 316                 print_otag(h, TAG_P, 0, NULL);
 317                 break;
 318         case (MDOC_Ft):
 319                 if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
 320                         print_otag(h, TAG_P, 0, NULL);
 321                         break;
 322                 }
 323                 /* FALLTHROUGH */
 324         default:
 325                 print_otag(h, TAG_BR, 0, NULL);
 326                 break;
 327         }
 328 }
 329 
 330 
 331 /*
 332  * Calculate the scaling unit passed in an `-offset' argument.  This
 333  * uses either a native scaling unit (e.g., 1i, 2m), one of a set of
 334  * predefined strings (indent, etc.), or the string length of the value.
 335  */
 336 static void
 337 a2offs(const char *p, struct roffsu *su)
 338 {
 339 
 340         /* FIXME: "right"? */
 341 
 342         if (0 == strcmp(p, "left"))
 343                 SCALE_HS_INIT(su, 0);
 344         else if (0 == strcmp(p, "indent"))
 345                 SCALE_HS_INIT(su, INDENT);
 346         else if (0 == strcmp(p, "indent-two"))
 347                 SCALE_HS_INIT(su, INDENT * 2);
 348         else if ( ! a2roffsu(p, su, SCALE_MAX))
 349                 SCALE_HS_INIT(su, html_strlen(p));
 350 }
 351 
 352 
 353 static void
 354 print_mdoc(MDOC_ARGS)
 355 {
 356         struct tag      *t, *tt;
 357         struct htmlpair  tag;
 358 
 359         PAIR_CLASS_INIT(&tag, "mandoc");
 360 
 361         if ( ! (HTML_FRAGMENT & h->oflags)) {
 362                 print_gen_decls(h);
 363                 t = print_otag(h, TAG_HTML, 0, NULL);
 364                 tt = print_otag(h, TAG_HEAD, 0, NULL);
 365                 print_mdoc_head(meta, n, h);
 366                 print_tagq(h, tt);
 367                 print_otag(h, TAG_BODY, 0, NULL);
 368                 print_otag(h, TAG_DIV, 1, &tag);
 369         } else 
 370                 t = print_otag(h, TAG_DIV, 1, &tag);
 371 
 372         print_mdoc_nodelist(meta, n, h);
 373         print_tagq(h, t);
 374 }
 375 
 376 
 377 /* ARGSUSED */
 378 static void
 379 print_mdoc_head(MDOC_ARGS)
 380 {
 381 
 382         print_gen_head(h);
 383         bufinit(h);
 384         bufcat_fmt(h, "%s(%s)", meta->title, meta->msec);
 385 
 386         if (meta->arch)
 387                 bufcat_fmt(h, " (%s)", meta->arch);
 388 
 389         print_otag(h, TAG_TITLE, 0, NULL);
 390         print_text(h, h->buf);
 391 }
 392 
 393 
 394 static void
 395 print_mdoc_nodelist(MDOC_ARGS)
 396 {
 397 
 398         print_mdoc_node(meta, n, h);
 399         if (n->next)
 400                 print_mdoc_nodelist(meta, n->next, h);
 401 }
 402 
 403 
 404 static void
 405 print_mdoc_node(MDOC_ARGS)
 406 {
 407         int              child;
 408         struct tag      *t;
 409 
 410         child = 1;
 411         t = h->tags.head;
 412 
 413         switch (n->type) {
 414         case (MDOC_ROOT):
 415                 child = mdoc_root_pre(meta, n, h);
 416                 break;
 417         case (MDOC_TEXT):
 418                 /* No tables in this mode... */
 419                 assert(NULL == h->tblt);
 420 
 421                 /*
 422                  * Make sure that if we're in a literal mode already
 423                  * (i.e., within a <PRE>) don't print the newline.
 424                  */
 425                 if (' ' == *n->string && MDOC_LINE & n->flags)
 426                         if ( ! (HTML_LITERAL & h->flags))
 427                                 print_otag(h, TAG_BR, 0, NULL);
 428                 if (MDOC_DELIMC & n->flags)
 429                         h->flags |= HTML_NOSPACE;
 430                 print_text(h, n->string);
 431                 if (MDOC_DELIMO & n->flags)
 432                         h->flags |= HTML_NOSPACE;
 433                 return;
 434         case (MDOC_EQN):
 435                 print_eqn(h, n->eqn);
 436                 break;
 437         case (MDOC_TBL):
 438                 /*
 439                  * This will take care of initialising all of the table
 440                  * state data for the first table, then tearing it down
 441                  * for the last one.
 442                  */
 443                 print_tbl(h, n->span);
 444                 return;
 445         default:
 446                 /*
 447                  * Close out the current table, if it's open, and unset
 448                  * the "meta" table state.  This will be reopened on the
 449                  * next table element.
 450                  */
 451                 if (h->tblt) {
 452                         print_tblclose(h);
 453                         t = h->tags.head;
 454                 }
 455 
 456                 assert(NULL == h->tblt);
 457                 if (mdocs[n->tok].pre && ENDBODY_NOT == n->end)
 458                         child = (*mdocs[n->tok].pre)(meta, n, h);
 459                 break;
 460         }
 461 
 462         if (HTML_KEEP & h->flags) {
 463                 if (n->prev ? (n->prev->lastline != n->line) :
 464                     (n->parent && n->parent->line != n->line)) {
 465                         h->flags &= ~HTML_KEEP;
 466                         h->flags |= HTML_PREKEEP;
 467                 }
 468         }
 469 
 470         if (child && n->child)
 471                 print_mdoc_nodelist(meta, n->child, h);
 472 
 473         print_stagq(h, t);
 474 
 475         switch (n->type) {
 476         case (MDOC_ROOT):
 477                 mdoc_root_post(meta, n, h);
 478                 break;
 479         case (MDOC_EQN):
 480                 break;
 481         default:
 482                 if (mdocs[n->tok].post && ENDBODY_NOT == n->end)
 483                         (*mdocs[n->tok].post)(meta, n, h);
 484                 break;
 485         }
 486 }
 487 
 488 /* ARGSUSED */
 489 static void
 490 mdoc_root_post(MDOC_ARGS)
 491 {
 492         struct htmlpair  tag[3];
 493         struct tag      *t, *tt;
 494 
 495         PAIR_SUMMARY_INIT(&tag[0], "Document Footer");
 496         PAIR_CLASS_INIT(&tag[1], "foot");
 497         PAIR_INIT(&tag[2], ATTR_WIDTH, "100%");
 498         t = print_otag(h, TAG_TABLE, 3, tag);
 499         PAIR_INIT(&tag[0], ATTR_WIDTH, "50%");
 500         print_otag(h, TAG_COL, 1, tag);
 501         print_otag(h, TAG_COL, 1, tag);
 502 
 503         print_otag(h, TAG_TBODY, 0, NULL);
 504 
 505         tt = print_otag(h, TAG_TR, 0, NULL);
 506 
 507         PAIR_CLASS_INIT(&tag[0], "foot-date");
 508         print_otag(h, TAG_TD, 1, tag);
 509         print_text(h, meta->date);
 510         print_stagq(h, tt);
 511 
 512         PAIR_CLASS_INIT(&tag[0], "foot-os");
 513         PAIR_INIT(&tag[1], ATTR_ALIGN, "right");
 514         print_otag(h, TAG_TD, 2, tag);
 515         print_text(h, meta->os);
 516         print_tagq(h, t);
 517 }
 518 
 519 
 520 /* ARGSUSED */
 521 static int
 522 mdoc_root_pre(MDOC_ARGS)
 523 {
 524         struct htmlpair  tag[3];
 525         struct tag      *t, *tt;
 526         char             b[BUFSIZ], title[BUFSIZ];
 527 
 528         strlcpy(b, meta->vol, BUFSIZ);
 529 
 530         if (meta->arch) {
 531                 strlcat(b, " (", BUFSIZ);
 532                 strlcat(b, meta->arch, BUFSIZ);
 533                 strlcat(b, ")", BUFSIZ);
 534         }
 535 
 536         snprintf(title, BUFSIZ - 1, "%s(%s)", meta->title, meta->msec);
 537 
 538         PAIR_SUMMARY_INIT(&tag[0], "Document Header");
 539         PAIR_CLASS_INIT(&tag[1], "head");
 540         PAIR_INIT(&tag[2], ATTR_WIDTH, "100%");
 541         t = print_otag(h, TAG_TABLE, 3, tag);
 542         PAIR_INIT(&tag[0], ATTR_WIDTH, "30%");
 543         print_otag(h, TAG_COL, 1, tag);
 544         print_otag(h, TAG_COL, 1, tag);
 545         print_otag(h, TAG_COL, 1, tag);
 546 
 547         print_otag(h, TAG_TBODY, 0, NULL);
 548 
 549         tt = print_otag(h, TAG_TR, 0, NULL);
 550 
 551         PAIR_CLASS_INIT(&tag[0], "head-ltitle");
 552         print_otag(h, TAG_TD, 1, tag);
 553         print_text(h, title);
 554         print_stagq(h, tt);
 555 
 556         PAIR_CLASS_INIT(&tag[0], "head-vol");
 557         PAIR_INIT(&tag[1], ATTR_ALIGN, "center");
 558         print_otag(h, TAG_TD, 2, tag);
 559         print_text(h, b);
 560         print_stagq(h, tt);
 561 
 562         PAIR_CLASS_INIT(&tag[0], "head-rtitle");
 563         PAIR_INIT(&tag[1], ATTR_ALIGN, "right");
 564         print_otag(h, TAG_TD, 2, tag);
 565         print_text(h, title);
 566         print_tagq(h, t);
 567         return(1);
 568 }
 569 
 570 
 571 /* ARGSUSED */
 572 static int
 573 mdoc_sh_pre(MDOC_ARGS)
 574 {
 575         struct htmlpair  tag;
 576 
 577         if (MDOC_BLOCK == n->type) {
 578                 PAIR_CLASS_INIT(&tag, "section");
 579                 print_otag(h, TAG_DIV, 1, &tag);
 580                 return(1);
 581         } else if (MDOC_BODY == n->type)
 582                 return(1);
 583 
 584         bufinit(h);
 585         bufcat(h, "x");
 586 
 587         for (n = n->child; n && MDOC_TEXT == n->type; ) {
 588                 bufcat_id(h, n->string);
 589                 if (NULL != (n = n->next))
 590                         bufcat_id(h, " ");
 591         }
 592 
 593         if (NULL == n) {
 594                 PAIR_ID_INIT(&tag, h->buf);
 595                 print_otag(h, TAG_H1, 1, &tag);
 596         } else
 597                 print_otag(h, TAG_H1, 0, NULL);
 598 
 599         return(1);
 600 }
 601 
 602 /* ARGSUSED */
 603 static int
 604 mdoc_ss_pre(MDOC_ARGS)
 605 {
 606         struct htmlpair  tag;
 607 
 608         if (MDOC_BLOCK == n->type) {
 609                 PAIR_CLASS_INIT(&tag, "subsection");
 610                 print_otag(h, TAG_DIV, 1, &tag);
 611                 return(1);
 612         } else if (MDOC_BODY == n->type)
 613                 return(1);
 614 
 615         bufinit(h);
 616         bufcat(h, "x");
 617 
 618         for (n = n->child; n && MDOC_TEXT == n->type; ) {
 619                 bufcat_id(h, n->string);
 620                 if (NULL != (n = n->next))
 621                         bufcat_id(h, " ");
 622         }
 623 
 624         if (NULL == n) {
 625                 PAIR_ID_INIT(&tag, h->buf);
 626                 print_otag(h, TAG_H2, 1, &tag);
 627         } else
 628                 print_otag(h, TAG_H2, 0, NULL);
 629 
 630         return(1);
 631 }
 632 
 633 
 634 /* ARGSUSED */
 635 static int
 636 mdoc_fl_pre(MDOC_ARGS)
 637 {
 638         struct htmlpair  tag;
 639 
 640         PAIR_CLASS_INIT(&tag, "flag");
 641         print_otag(h, TAG_B, 1, &tag);
 642 
 643         /* `Cm' has no leading hyphen. */
 644 
 645         if (MDOC_Cm == n->tok)
 646                 return(1);
 647 
 648         print_text(h, "\\-");
 649 
 650         if (n->child)
 651                 h->flags |= HTML_NOSPACE;
 652         else if (n->next && n->next->line == n->line)
 653                 h->flags |= HTML_NOSPACE;
 654 
 655         return(1);
 656 }
 657 
 658 
 659 /* ARGSUSED */
 660 static int
 661 mdoc_nd_pre(MDOC_ARGS)
 662 {
 663         struct htmlpair  tag;
 664 
 665         if (MDOC_BODY != n->type)
 666                 return(1);
 667 
 668         /* XXX: this tag in theory can contain block elements. */
 669 
 670         print_text(h, "\\(em");
 671         PAIR_CLASS_INIT(&tag, "desc");
 672         print_otag(h, TAG_SPAN, 1, &tag);
 673         return(1);
 674 }
 675 
 676 
 677 static int
 678 mdoc_nm_pre(MDOC_ARGS)
 679 {
 680         struct htmlpair  tag;
 681         struct roffsu    su;
 682         int              len;
 683 
 684         switch (n->type) {
 685         case (MDOC_ELEM):
 686                 synopsis_pre(h, n);
 687                 PAIR_CLASS_INIT(&tag, "name");
 688                 print_otag(h, TAG_B, 1, &tag);
 689                 if (NULL == n->child && meta->name)
 690                         print_text(h, meta->name);
 691                 return(1);
 692         case (MDOC_HEAD):
 693                 print_otag(h, TAG_TD, 0, NULL);
 694                 if (NULL == n->child && meta->name)
 695                         print_text(h, meta->name);
 696                 return(1);
 697         case (MDOC_BODY):
 698                 print_otag(h, TAG_TD, 0, NULL);
 699                 return(1);
 700         default:
 701                 break;
 702         }
 703 
 704         synopsis_pre(h, n);
 705         PAIR_CLASS_INIT(&tag, "synopsis");
 706         print_otag(h, TAG_TABLE, 1, &tag);
 707 
 708         for (len = 0, n = n->child; n; n = n->next)
 709                 if (MDOC_TEXT == n->type)
 710                         len += html_strlen(n->string);
 711 
 712         if (0 == len && meta->name)
 713                 len = html_strlen(meta->name);
 714 
 715         SCALE_HS_INIT(&su, (double)len);
 716         bufinit(h);
 717         bufcat_su(h, "width", &su);
 718         PAIR_STYLE_INIT(&tag, h);
 719         print_otag(h, TAG_COL, 1, &tag);
 720         print_otag(h, TAG_COL, 0, NULL);
 721         print_otag(h, TAG_TBODY, 0, NULL);
 722         print_otag(h, TAG_TR, 0, NULL);
 723         return(1);
 724 }
 725 
 726 
 727 /* ARGSUSED */
 728 static int
 729 mdoc_xr_pre(MDOC_ARGS)
 730 {
 731         struct htmlpair  tag[2];
 732 
 733         if (NULL == n->child)
 734                 return(0);
 735 
 736         PAIR_CLASS_INIT(&tag[0], "link-man");
 737 
 738         if (h->base_man) {
 739                 buffmt_man(h, n->child->string, 
 740                                 n->child->next ? 
 741                                 n->child->next->string : NULL);
 742                 PAIR_HREF_INIT(&tag[1], h->buf);
 743                 print_otag(h, TAG_A, 2, tag);
 744         } else
 745                 print_otag(h, TAG_A, 1, tag);
 746 
 747         n = n->child;
 748         print_text(h, n->string);
 749 
 750         if (NULL == (n = n->next))
 751                 return(0);
 752 
 753         h->flags |= HTML_NOSPACE;
 754         print_text(h, "(");
 755         h->flags |= HTML_NOSPACE;
 756         print_text(h, n->string);
 757         h->flags |= HTML_NOSPACE;
 758         print_text(h, ")");
 759         return(0);
 760 }
 761 
 762 
 763 /* ARGSUSED */
 764 static int
 765 mdoc_ns_pre(MDOC_ARGS)
 766 {
 767 
 768         if ( ! (MDOC_LINE & n->flags))
 769                 h->flags |= HTML_NOSPACE;
 770         return(1);
 771 }
 772 
 773 
 774 /* ARGSUSED */
 775 static int
 776 mdoc_ar_pre(MDOC_ARGS)
 777 {
 778         struct htmlpair tag;
 779 
 780         PAIR_CLASS_INIT(&tag, "arg");
 781         print_otag(h, TAG_I, 1, &tag);
 782         return(1);
 783 }
 784 
 785 
 786 /* ARGSUSED */
 787 static int
 788 mdoc_xx_pre(MDOC_ARGS)
 789 {
 790         const char      *pp;
 791         struct htmlpair  tag;
 792         int              flags;
 793 
 794         switch (n->tok) {
 795         case (MDOC_Bsx):
 796                 pp = "BSD/OS";
 797                 break;
 798         case (MDOC_Dx):
 799                 pp = "DragonFly";
 800                 break;
 801         case (MDOC_Fx):
 802                 pp = "FreeBSD";
 803                 break;
 804         case (MDOC_Nx):
 805                 pp = "NetBSD";
 806                 break;
 807         case (MDOC_Ox):
 808                 pp = "OpenBSD";
 809                 break;
 810         case (MDOC_Ux):
 811                 pp = "UNIX";
 812                 break;
 813         default:
 814                 return(1);
 815         }
 816 
 817         PAIR_CLASS_INIT(&tag, "unix");
 818         print_otag(h, TAG_SPAN, 1, &tag);
 819 
 820         print_text(h, pp);
 821         if (n->child) {
 822                 flags = h->flags;
 823                 h->flags |= HTML_KEEP;
 824                 print_text(h, n->child->string);
 825                 h->flags = flags;
 826         }
 827         return(0);
 828 }
 829 
 830 
 831 /* ARGSUSED */
 832 static int
 833 mdoc_bx_pre(MDOC_ARGS)
 834 {
 835         struct htmlpair  tag;
 836 
 837         PAIR_CLASS_INIT(&tag, "unix");
 838         print_otag(h, TAG_SPAN, 1, &tag);
 839 
 840         if (NULL != (n = n->child)) {
 841                 print_text(h, n->string);
 842                 h->flags |= HTML_NOSPACE;
 843                 print_text(h, "BSD");
 844         } else {
 845                 print_text(h, "BSD");
 846                 return(0);
 847         }
 848 
 849         if (NULL != (n = n->next)) {
 850                 h->flags |= HTML_NOSPACE;
 851                 print_text(h, "-");
 852                 h->flags |= HTML_NOSPACE;
 853                 print_text(h, n->string);
 854         }
 855 
 856         return(0);
 857 }
 858 
 859 /* ARGSUSED */
 860 static int
 861 mdoc_it_pre(MDOC_ARGS)
 862 {
 863         struct roffsu    su;
 864         enum mdoc_list   type;
 865         struct htmlpair  tag[2];
 866         const struct mdoc_node *bl;
 867 
 868         bl = n->parent;
 869         while (bl && MDOC_Bl != bl->tok)
 870                 bl = bl->parent;
 871 
 872         assert(bl);
 873 
 874         type = bl->norm->Bl.type;
 875 
 876         assert(lists[type]);
 877         PAIR_CLASS_INIT(&tag[0], lists[type]);
 878 
 879         bufinit(h);
 880 
 881         if (MDOC_HEAD == n->type) {
 882                 switch (type) {
 883                 case(LIST_bullet):
 884                         /* FALLTHROUGH */
 885                 case(LIST_dash):
 886                         /* FALLTHROUGH */
 887                 case(LIST_item):
 888                         /* FALLTHROUGH */
 889                 case(LIST_hyphen):
 890                         /* FALLTHROUGH */
 891                 case(LIST_enum):
 892                         return(0);
 893                 case(LIST_diag):
 894                         /* FALLTHROUGH */
 895                 case(LIST_hang):
 896                         /* FALLTHROUGH */
 897                 case(LIST_inset):
 898                         /* FALLTHROUGH */
 899                 case(LIST_ohang):
 900                         /* FALLTHROUGH */
 901                 case(LIST_tag):
 902                         SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
 903                         bufcat_su(h, "margin-top", &su);
 904                         PAIR_STYLE_INIT(&tag[1], h);
 905                         print_otag(h, TAG_DT, 2, tag);
 906                         if (LIST_diag != type)
 907                                 break;
 908                         PAIR_CLASS_INIT(&tag[0], "diag");
 909                         print_otag(h, TAG_B, 1, tag);
 910                         break;
 911                 case(LIST_column):
 912                         break;
 913                 default:
 914                         break;
 915                 }
 916         } else if (MDOC_BODY == n->type) {
 917                 switch (type) {
 918                 case(LIST_bullet):
 919                         /* FALLTHROUGH */
 920                 case(LIST_hyphen):
 921                         /* FALLTHROUGH */
 922                 case(LIST_dash):
 923                         /* FALLTHROUGH */
 924                 case(LIST_enum):
 925                         /* FALLTHROUGH */
 926                 case(LIST_item):
 927                         SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
 928                         bufcat_su(h, "margin-top", &su);
 929                         PAIR_STYLE_INIT(&tag[1], h);
 930                         print_otag(h, TAG_LI, 2, tag);
 931                         break;
 932                 case(LIST_diag):
 933                         /* FALLTHROUGH */
 934                 case(LIST_hang):
 935                         /* FALLTHROUGH */
 936                 case(LIST_inset):
 937                         /* FALLTHROUGH */
 938                 case(LIST_ohang):
 939                         /* FALLTHROUGH */
 940                 case(LIST_tag):
 941                         if (NULL == bl->norm->Bl.width) {
 942                                 print_otag(h, TAG_DD, 1, tag);
 943                                 break;
 944                         }
 945                         a2width(bl->norm->Bl.width, &su);
 946                         bufcat_su(h, "margin-left", &su);
 947                         PAIR_STYLE_INIT(&tag[1], h);
 948                         print_otag(h, TAG_DD, 2, tag);
 949                         break;
 950                 case(LIST_column):
 951                         SCALE_VS_INIT(&su, ! bl->norm->Bl.comp);
 952                         bufcat_su(h, "margin-top", &su);
 953                         PAIR_STYLE_INIT(&tag[1], h);
 954                         print_otag(h, TAG_TD, 2, tag);
 955                         break;
 956                 default:
 957                         break;
 958                 }
 959         } else {
 960                 switch (type) {
 961                 case (LIST_column):
 962                         print_otag(h, TAG_TR, 1, tag);
 963                         break;
 964                 default:
 965                         break;
 966                 }
 967         }
 968 
 969         return(1);
 970 }
 971 
 972 /* ARGSUSED */
 973 static int
 974 mdoc_bl_pre(MDOC_ARGS)
 975 {
 976         int              i;
 977         struct htmlpair  tag[3];
 978         struct roffsu    su;
 979         char             buf[BUFSIZ];
 980 
 981         if (MDOC_BODY == n->type) {
 982                 if (LIST_column == n->norm->Bl.type)
 983                         print_otag(h, TAG_TBODY, 0, NULL);
 984                 return(1);
 985         }
 986 
 987         if (MDOC_HEAD == n->type) {
 988                 if (LIST_column != n->norm->Bl.type)
 989                         return(0);
 990 
 991                 /*
 992                  * For each column, print out the <COL> tag with our
 993                  * suggested width.  The last column gets min-width, as
 994                  * in terminal mode it auto-sizes to the width of the
 995                  * screen and we want to preserve that behaviour.
 996                  */
 997 
 998                 for (i = 0; i < (int)n->norm->Bl.ncols; i++) {
 999                         bufinit(h);
1000                         a2width(n->norm->Bl.cols[i], &su);
1001                         if (i < (int)n->norm->Bl.ncols - 1)
1002                                 bufcat_su(h, "width", &su);
1003                         else
1004                                 bufcat_su(h, "min-width", &su);
1005                         PAIR_STYLE_INIT(&tag[0], h);
1006                         print_otag(h, TAG_COL, 1, tag);
1007                 }
1008 
1009                 return(0);
1010         }
1011 
1012         SCALE_VS_INIT(&su, 0);
1013         bufinit(h);
1014         bufcat_su(h, "margin-top", &su);
1015         bufcat_su(h, "margin-bottom", &su);
1016         PAIR_STYLE_INIT(&tag[0], h);
1017 
1018         assert(lists[n->norm->Bl.type]);
1019         strlcpy(buf, "list ", BUFSIZ);
1020         strlcat(buf, lists[n->norm->Bl.type], BUFSIZ);
1021         PAIR_INIT(&tag[1], ATTR_CLASS, buf);
1022 
1023         /* Set the block's left-hand margin. */
1024 
1025         if (n->norm->Bl.offs) {
1026                 a2offs(n->norm->Bl.offs, &su);
1027                 bufcat_su(h, "margin-left", &su);
1028         }
1029 
1030         switch (n->norm->Bl.type) {
1031         case(LIST_bullet):
1032                 /* FALLTHROUGH */
1033         case(LIST_dash):
1034                 /* FALLTHROUGH */
1035         case(LIST_hyphen):
1036                 /* FALLTHROUGH */
1037         case(LIST_item):
1038                 print_otag(h, TAG_UL, 2, tag);
1039                 break;
1040         case(LIST_enum):
1041                 print_otag(h, TAG_OL, 2, tag);
1042                 break;
1043         case(LIST_diag):
1044                 /* FALLTHROUGH */
1045         case(LIST_hang):
1046                 /* FALLTHROUGH */
1047         case(LIST_inset):
1048                 /* FALLTHROUGH */
1049         case(LIST_ohang):
1050                 /* FALLTHROUGH */
1051         case(LIST_tag):
1052                 print_otag(h, TAG_DL, 2, tag);
1053                 break;
1054         case(LIST_column):
1055                 print_otag(h, TAG_TABLE, 2, tag);
1056                 break;
1057         default:
1058                 abort();
1059                 /* NOTREACHED */
1060         }
1061 
1062         return(1);
1063 }
1064 
1065 /* ARGSUSED */
1066 static int
1067 mdoc_ex_pre(MDOC_ARGS)
1068 {
1069         struct tag      *t;
1070         struct htmlpair  tag;
1071         int              nchild;
1072 
1073         if (n->prev)
1074                 print_otag(h, TAG_BR, 0, NULL);
1075 
1076         PAIR_CLASS_INIT(&tag, "utility");
1077 
1078         print_text(h, "The");
1079 
1080         nchild = n->nchild;
1081         for (n = n->child; n; n = n->next) {
1082                 assert(MDOC_TEXT == n->type);
1083 
1084                 t = print_otag(h, TAG_B, 1, &tag);
1085                 print_text(h, n->string);
1086                 print_tagq(h, t);
1087 
1088                 if (nchild > 2 && n->next) {
1089                         h->flags |= HTML_NOSPACE;
1090                         print_text(h, ",");
1091                 }
1092 
1093                 if (n->next && NULL == n->next->next)
1094                         print_text(h, "and");
1095         }
1096 
1097         if (nchild > 1)
1098                 print_text(h, "utilities exit");
1099         else
1100                 print_text(h, "utility exits");
1101 
1102         print_text(h, "0 on success, and >0 if an error occurs.");
1103         return(0);
1104 }
1105 
1106 
1107 /* ARGSUSED */
1108 static int
1109 mdoc_em_pre(MDOC_ARGS)
1110 {
1111         struct htmlpair tag;
1112 
1113         PAIR_CLASS_INIT(&tag, "emph");
1114         print_otag(h, TAG_SPAN, 1, &tag);
1115         return(1);
1116 }
1117 
1118 
1119 /* ARGSUSED */
1120 static int
1121 mdoc_d1_pre(MDOC_ARGS)
1122 {
1123         struct htmlpair  tag[2];
1124         struct roffsu    su;
1125 
1126         if (MDOC_BLOCK != n->type)
1127                 return(1);
1128 
1129         SCALE_VS_INIT(&su, 0);
1130         bufinit(h);
1131         bufcat_su(h, "margin-top", &su);
1132         bufcat_su(h, "margin-bottom", &su);
1133         PAIR_STYLE_INIT(&tag[0], h);
1134         print_otag(h, TAG_BLOCKQUOTE, 1, tag);
1135 
1136         /* BLOCKQUOTE needs a block body. */
1137 
1138         PAIR_CLASS_INIT(&tag[0], "display");
1139         print_otag(h, TAG_DIV, 1, tag);
1140 
1141         if (MDOC_Dl == n->tok) {
1142                 PAIR_CLASS_INIT(&tag[0], "lit");
1143                 print_otag(h, TAG_CODE, 1, tag);
1144         } 
1145 
1146         return(1);
1147 }
1148 
1149 
1150 /* ARGSUSED */
1151 static int
1152 mdoc_sx_pre(MDOC_ARGS)
1153 {
1154         struct htmlpair  tag[2];
1155 
1156         bufinit(h);
1157         bufcat(h, "#x");
1158 
1159         for (n = n->child; n; ) {
1160                 bufcat_id(h, n->string);
1161                 if (NULL != (n = n->next))
1162                         bufcat_id(h, " ");
1163         }
1164 
1165         PAIR_CLASS_INIT(&tag[0], "link-sec");
1166         PAIR_HREF_INIT(&tag[1], h->buf);
1167 
1168         print_otag(h, TAG_I, 1, tag);
1169         print_otag(h, TAG_A, 2, tag);
1170         return(1);
1171 }
1172 
1173 
1174 /* ARGSUSED */
1175 static int
1176 mdoc_bd_pre(MDOC_ARGS)
1177 {
1178         struct htmlpair          tag[2];
1179         int                      comp, sv;
1180         const struct mdoc_node  *nn;
1181         struct roffsu            su;
1182 
1183         if (MDOC_HEAD == n->type)
1184                 return(0);
1185 
1186         if (MDOC_BLOCK == n->type) {
1187                 comp = n->norm->Bd.comp;
1188                 for (nn = n; nn && ! comp; nn = nn->parent) {
1189                         if (MDOC_BLOCK != nn->type)
1190                                 continue;
1191                         if (MDOC_Ss == nn->tok || MDOC_Sh == nn->tok)
1192                                 comp = 1;
1193                         if (nn->prev)
1194                                 break;
1195                 }
1196                 if ( ! comp)
1197                         print_otag(h, TAG_P, 0, NULL);
1198                 return(1);
1199         }
1200 
1201         SCALE_HS_INIT(&su, 0);
1202         if (n->norm->Bd.offs)
1203                 a2offs(n->norm->Bd.offs, &su);
1204         
1205         bufinit(h);
1206         bufcat_su(h, "margin-left", &su);
1207         PAIR_STYLE_INIT(&tag[0], h);
1208 
1209         if (DISP_unfilled != n->norm->Bd.type && 
1210                         DISP_literal != n->norm->Bd.type) {
1211                 PAIR_CLASS_INIT(&tag[1], "display");
1212                 print_otag(h, TAG_DIV, 2, tag);
1213                 return(1);
1214         }
1215 
1216         PAIR_CLASS_INIT(&tag[1], "lit display");
1217         print_otag(h, TAG_PRE, 2, tag);
1218 
1219         /* This can be recursive: save & set our literal state. */
1220 
1221         sv = h->flags & HTML_LITERAL;
1222         h->flags |= HTML_LITERAL;
1223 
1224         for (nn = n->child; nn; nn = nn->next) {
1225                 print_mdoc_node(meta, nn, h);
1226                 /*
1227                  * If the printed node flushes its own line, then we
1228                  * needn't do it here as well.  This is hacky, but the
1229                  * notion of selective eoln whitespace is pretty dumb
1230                  * anyway, so don't sweat it.
1231                  */
1232                 switch (nn->tok) {
1233                 case (MDOC_Sm):
1234                         /* FALLTHROUGH */
1235                 case (MDOC_br):
1236                         /* FALLTHROUGH */
1237                 case (MDOC_sp):
1238                         /* FALLTHROUGH */
1239                 case (MDOC_Bl):
1240                         /* FALLTHROUGH */
1241                 case (MDOC_D1):
1242                         /* FALLTHROUGH */
1243                 case (MDOC_Dl):
1244                         /* FALLTHROUGH */
1245                 case (MDOC_Lp):
1246                         /* FALLTHROUGH */
1247                 case (MDOC_Pp):
1248                         continue;
1249                 default:
1250                         break;
1251                 }
1252                 if (nn->next && nn->next->line == nn->line)
1253                         continue;
1254                 else if (nn->next)
1255                         print_text(h, "\n");
1256 
1257                 h->flags |= HTML_NOSPACE;
1258         }
1259 
1260         if (0 == sv)
1261                 h->flags &= ~HTML_LITERAL;
1262 
1263         return(0);
1264 }
1265 
1266 
1267 /* ARGSUSED */
1268 static int
1269 mdoc_pa_pre(MDOC_ARGS)
1270 {
1271         struct htmlpair tag;
1272 
1273         PAIR_CLASS_INIT(&tag, "file");
1274         print_otag(h, TAG_I, 1, &tag);
1275         return(1);
1276 }
1277 
1278 
1279 /* ARGSUSED */
1280 static int
1281 mdoc_ad_pre(MDOC_ARGS)
1282 {
1283         struct htmlpair tag;
1284 
1285         PAIR_CLASS_INIT(&tag, "addr");
1286         print_otag(h, TAG_I, 1, &tag);
1287         return(1);
1288 }
1289 
1290 
1291 /* ARGSUSED */
1292 static int
1293 mdoc_an_pre(MDOC_ARGS)
1294 {
1295         struct htmlpair tag;
1296 
1297         /* TODO: -split and -nosplit (see termp_an_pre()). */
1298 
1299         PAIR_CLASS_INIT(&tag, "author");
1300         print_otag(h, TAG_SPAN, 1, &tag);
1301         return(1);
1302 }
1303 
1304 
1305 /* ARGSUSED */
1306 static int
1307 mdoc_cd_pre(MDOC_ARGS)
1308 {
1309         struct htmlpair tag;
1310 
1311         synopsis_pre(h, n);
1312         PAIR_CLASS_INIT(&tag, "config");
1313         print_otag(h, TAG_B, 1, &tag);
1314         return(1);
1315 }
1316 
1317 
1318 /* ARGSUSED */
1319 static int
1320 mdoc_dv_pre(MDOC_ARGS)
1321 {
1322         struct htmlpair tag;
1323 
1324         PAIR_CLASS_INIT(&tag, "define");
1325         print_otag(h, TAG_SPAN, 1, &tag);
1326         return(1);
1327 }
1328 
1329 
1330 /* ARGSUSED */
1331 static int
1332 mdoc_ev_pre(MDOC_ARGS)
1333 {
1334         struct htmlpair tag;
1335 
1336         PAIR_CLASS_INIT(&tag, "env");
1337         print_otag(h, TAG_SPAN, 1, &tag);
1338         return(1);
1339 }
1340 
1341 
1342 /* ARGSUSED */
1343 static int
1344 mdoc_er_pre(MDOC_ARGS)
1345 {
1346         struct htmlpair tag;
1347 
1348         PAIR_CLASS_INIT(&tag, "errno");
1349         print_otag(h, TAG_SPAN, 1, &tag);
1350         return(1);
1351 }
1352 
1353 
1354 /* ARGSUSED */
1355 static int
1356 mdoc_fa_pre(MDOC_ARGS)
1357 {
1358         const struct mdoc_node  *nn;
1359         struct htmlpair          tag;
1360         struct tag              *t;
1361 
1362         PAIR_CLASS_INIT(&tag, "farg");
1363         if (n->parent->tok != MDOC_Fo) {
1364                 print_otag(h, TAG_I, 1, &tag);
1365                 return(1);
1366         }
1367 
1368         for (nn = n->child; nn; nn = nn->next) {
1369                 t = print_otag(h, TAG_I, 1, &tag);
1370                 print_text(h, nn->string);
1371                 print_tagq(h, t);
1372                 if (nn->next) {
1373                         h->flags |= HTML_NOSPACE;
1374                         print_text(h, ",");
1375                 }
1376         }
1377 
1378         if (n->child && n->next && n->next->tok == MDOC_Fa) {
1379                 h->flags |= HTML_NOSPACE;
1380                 print_text(h, ",");
1381         }
1382 
1383         return(0);
1384 }
1385 
1386 
1387 /* ARGSUSED */
1388 static int
1389 mdoc_fd_pre(MDOC_ARGS)
1390 {
1391         struct htmlpair  tag[2];
1392         char             buf[BUFSIZ];
1393         size_t           sz;
1394         int              i;
1395         struct tag      *t;
1396 
1397         synopsis_pre(h, n);
1398 
1399         if (NULL == (n = n->child))
1400                 return(0);
1401 
1402         assert(MDOC_TEXT == n->type);
1403 
1404         if (strcmp(n->string, "#include")) {
1405                 PAIR_CLASS_INIT(&tag[0], "macro");
1406                 print_otag(h, TAG_B, 1, tag);
1407                 return(1);
1408         }
1409 
1410         PAIR_CLASS_INIT(&tag[0], "includes");
1411         print_otag(h, TAG_B, 1, tag);
1412         print_text(h, n->string);
1413 
1414         if (NULL != (n = n->next)) {
1415                 assert(MDOC_TEXT == n->type);
1416                 strlcpy(buf, '<' == *n->string || '"' == *n->string ? 
1417                                 n->string + 1 : n->string, BUFSIZ);
1418 
1419                 sz = strlen(buf);
1420                 if (sz && ('>' == buf[sz - 1] || '"' == buf[sz - 1]))
1421                         buf[sz - 1] = '\0';
1422 
1423                 PAIR_CLASS_INIT(&tag[0], "link-includes");
1424                 
1425                 i = 1;
1426                 if (h->base_includes) {
1427                         buffmt_includes(h, buf);
1428                         PAIR_HREF_INIT(&tag[i], h->buf);
1429                         i++;
1430                 } 
1431 
1432                 t = print_otag(h, TAG_A, i, tag);
1433                 print_text(h, n->string);
1434                 print_tagq(h, t);
1435 
1436                 n = n->next;
1437         }
1438 
1439         for ( ; n; n = n->next) {
1440                 assert(MDOC_TEXT == n->type);
1441                 print_text(h, n->string);
1442         }
1443 
1444         return(0);
1445 }
1446 
1447 
1448 /* ARGSUSED */
1449 static int
1450 mdoc_vt_pre(MDOC_ARGS)
1451 {
1452         struct htmlpair  tag;
1453 
1454         if (MDOC_BLOCK == n->type) {
1455                 synopsis_pre(h, n);
1456                 return(1);
1457         } else if (MDOC_ELEM == n->type) {
1458                 synopsis_pre(h, n);
1459         } else if (MDOC_HEAD == n->type)
1460                 return(0);
1461 
1462         PAIR_CLASS_INIT(&tag, "type");
1463         print_otag(h, TAG_SPAN, 1, &tag);
1464         return(1);
1465 }
1466 
1467 
1468 /* ARGSUSED */
1469 static int
1470 mdoc_ft_pre(MDOC_ARGS)
1471 {
1472         struct htmlpair  tag;
1473 
1474         synopsis_pre(h, n);
1475         PAIR_CLASS_INIT(&tag, "ftype");
1476         print_otag(h, TAG_I, 1, &tag);
1477         return(1);
1478 }
1479 
1480 
1481 /* ARGSUSED */
1482 static int
1483 mdoc_fn_pre(MDOC_ARGS)
1484 {
1485         struct tag      *t;
1486         struct htmlpair  tag[2];
1487         char             nbuf[BUFSIZ];
1488         const char      *sp, *ep;
1489         int              sz, i, pretty;
1490 
1491         pretty = MDOC_SYNPRETTY & n->flags;
1492         synopsis_pre(h, n);
1493 
1494         /* Split apart into type and name. */
1495         assert(n->child->string);
1496         sp = n->child->string;
1497 
1498         ep = strchr(sp, ' ');
1499         if (NULL != ep) {
1500                 PAIR_CLASS_INIT(&tag[0], "ftype");
1501                 t = print_otag(h, TAG_I, 1, tag);
1502         
1503                 while (ep) {
1504                         sz = MIN((int)(ep - sp), BUFSIZ - 1);
1505                         (void)memcpy(nbuf, sp, (size_t)sz);
1506                         nbuf[sz] = '\0';
1507                         print_text(h, nbuf);
1508                         sp = ++ep;
1509                         ep = strchr(sp, ' ');
1510                 }
1511                 print_tagq(h, t);
1512         }
1513 
1514         PAIR_CLASS_INIT(&tag[0], "fname");
1515 
1516         /*
1517          * FIXME: only refer to IDs that we know exist.
1518          */
1519 
1520 #if 0
1521         if (MDOC_SYNPRETTY & n->flags) {
1522                 nbuf[0] = '\0';
1523                 html_idcat(nbuf, sp, BUFSIZ);
1524                 PAIR_ID_INIT(&tag[1], nbuf);
1525         } else {
1526                 strlcpy(nbuf, "#", BUFSIZ);
1527                 html_idcat(nbuf, sp, BUFSIZ);
1528                 PAIR_HREF_INIT(&tag[1], nbuf);
1529         }
1530 #endif
1531 
1532         t = print_otag(h, TAG_B, 1, tag);
1533 
1534         if (sp) {
1535                 strlcpy(nbuf, sp, BUFSIZ);
1536                 print_text(h, nbuf);
1537         }
1538 
1539         print_tagq(h, t);
1540 
1541         h->flags |= HTML_NOSPACE;
1542         print_text(h, "(");
1543         h->flags |= HTML_NOSPACE;
1544 
1545         PAIR_CLASS_INIT(&tag[0], "farg");
1546         bufinit(h);
1547         bufcat_style(h, "white-space", "nowrap");
1548         PAIR_STYLE_INIT(&tag[1], h);
1549 
1550         for (n = n->child->next; n; n = n->next) {
1551                 i = 1;
1552                 if (MDOC_SYNPRETTY & n->flags)
1553                         i = 2;
1554                 t = print_otag(h, TAG_I, i, tag);
1555                 print_text(h, n->string);
1556                 print_tagq(h, t);
1557                 if (n->next) {
1558                         h->flags |= HTML_NOSPACE;
1559                         print_text(h, ",");
1560                 }
1561         }
1562 
1563         h->flags |= HTML_NOSPACE;
1564         print_text(h, ")");
1565 
1566         if (pretty) {
1567                 h->flags |= HTML_NOSPACE;
1568                 print_text(h, ";");
1569         }
1570 
1571         return(0);
1572 }
1573 
1574 
1575 /* ARGSUSED */
1576 static int
1577 mdoc_sm_pre(MDOC_ARGS)
1578 {
1579 
1580         assert(n->child && MDOC_TEXT == n->child->type);
1581         if (0 == strcmp("on", n->child->string)) {
1582                 /* 
1583                  * FIXME: no p->col to check.  Thus, if we have
1584                  *  .Bd -literal
1585                  *  .Sm off
1586                  *  1 2
1587                  *  .Sm on
1588                  *  3
1589                  *  .Ed
1590                  * the "3" is preceded by a space.
1591                  */
1592                 h->flags &= ~HTML_NOSPACE;
1593                 h->flags &= ~HTML_NONOSPACE;
1594         } else
1595                 h->flags |= HTML_NONOSPACE;
1596 
1597         return(0);
1598 }
1599 
1600 /* ARGSUSED */
1601 static int
1602 mdoc_pp_pre(MDOC_ARGS)
1603 {
1604 
1605         print_otag(h, TAG_P, 0, NULL);
1606         return(0);
1607 
1608 }
1609 
1610 /* ARGSUSED */
1611 static int
1612 mdoc_sp_pre(MDOC_ARGS)
1613 {
1614         struct roffsu    su;
1615         struct htmlpair  tag;
1616 
1617         SCALE_VS_INIT(&su, 1);
1618 
1619         if (MDOC_sp == n->tok) {
1620                 if (NULL != (n = n->child))
1621                         if ( ! a2roffsu(n->string, &su, SCALE_VS))
1622                                 SCALE_VS_INIT(&su, atoi(n->string));
1623         } else
1624                 su.scale = 0;
1625 
1626         bufinit(h);
1627         bufcat_su(h, "height", &su);
1628         PAIR_STYLE_INIT(&tag, h);
1629         print_otag(h, TAG_DIV, 1, &tag);
1630 
1631         /* So the div isn't empty: */
1632         print_text(h, "\\~");
1633 
1634         return(0);
1635 
1636 }
1637 
1638 /* ARGSUSED */
1639 static int
1640 mdoc_lk_pre(MDOC_ARGS)
1641 {
1642         struct htmlpair  tag[2];
1643 
1644         if (NULL == (n = n->child))
1645                 return(0);
1646 
1647         assert(MDOC_TEXT == n->type);
1648 
1649         PAIR_CLASS_INIT(&tag[0], "link-ext");
1650         PAIR_HREF_INIT(&tag[1], n->string);
1651 
1652         print_otag(h, TAG_A, 2, tag);
1653 
1654         if (NULL == n->next)
1655                 print_text(h, n->string);
1656 
1657         for (n = n->next; n; n = n->next)
1658                 print_text(h, n->string);
1659 
1660         return(0);
1661 }
1662 
1663 
1664 /* ARGSUSED */
1665 static int
1666 mdoc_mt_pre(MDOC_ARGS)
1667 {
1668         struct htmlpair  tag[2];
1669         struct tag      *t;
1670 
1671         PAIR_CLASS_INIT(&tag[0], "link-mail");
1672 
1673         for (n = n->child; n; n = n->next) {
1674                 assert(MDOC_TEXT == n->type);
1675 
1676                 bufinit(h);
1677                 bufcat(h, "mailto:");
1678                 bufcat(h, n->string);
1679 
1680                 PAIR_HREF_INIT(&tag[1], h->buf);
1681                 t = print_otag(h, TAG_A, 2, tag);
1682                 print_text(h, n->string);
1683                 print_tagq(h, t);
1684         }
1685         
1686         return(0);
1687 }
1688 
1689 
1690 /* ARGSUSED */
1691 static int
1692 mdoc_fo_pre(MDOC_ARGS)
1693 {
1694         struct htmlpair  tag;
1695         struct tag      *t;
1696 
1697         if (MDOC_BODY == n->type) {
1698                 h->flags |= HTML_NOSPACE;
1699                 print_text(h, "(");
1700                 h->flags |= HTML_NOSPACE;
1701                 return(1);
1702         } else if (MDOC_BLOCK == n->type) {
1703                 synopsis_pre(h, n);
1704                 return(1);
1705         }
1706 
1707         /* XXX: we drop non-initial arguments as per groff. */
1708 
1709         assert(n->child);
1710         assert(n->child->string);
1711 
1712         PAIR_CLASS_INIT(&tag, "fname");
1713         t = print_otag(h, TAG_B, 1, &tag);
1714         print_text(h, n->child->string);
1715         print_tagq(h, t);
1716         return(0);
1717 }
1718 
1719 
1720 /* ARGSUSED */
1721 static void
1722 mdoc_fo_post(MDOC_ARGS)
1723 {
1724 
1725         if (MDOC_BODY != n->type)
1726                 return;
1727         h->flags |= HTML_NOSPACE;
1728         print_text(h, ")");
1729         h->flags |= HTML_NOSPACE;
1730         print_text(h, ";");
1731 }
1732 
1733 
1734 /* ARGSUSED */
1735 static int
1736 mdoc_in_pre(MDOC_ARGS)
1737 {
1738         struct tag      *t;
1739         struct htmlpair  tag[2];
1740         int              i;
1741 
1742         synopsis_pre(h, n);
1743 
1744         PAIR_CLASS_INIT(&tag[0], "includes");
1745         print_otag(h, TAG_B, 1, tag);
1746 
1747         /*
1748          * The first argument of the `In' gets special treatment as
1749          * being a linked value.  Subsequent values are printed
1750          * afterward.  groff does similarly.  This also handles the case
1751          * of no children.
1752          */
1753 
1754         if (MDOC_SYNPRETTY & n->flags && MDOC_LINE & n->flags)
1755                 print_text(h, "#include");
1756 
1757         print_text(h, "<");
1758         h->flags |= HTML_NOSPACE;
1759 
1760         if (NULL != (n = n->child)) {
1761                 assert(MDOC_TEXT == n->type);
1762 
1763                 PAIR_CLASS_INIT(&tag[0], "link-includes");
1764 
1765                 i = 1;
1766                 if (h->base_includes) {
1767                         buffmt_includes(h, n->string);
1768                         PAIR_HREF_INIT(&tag[i], h->buf);
1769                         i++;
1770                 } 
1771 
1772                 t = print_otag(h, TAG_A, i, tag);
1773                 print_text(h, n->string);
1774                 print_tagq(h, t);
1775 
1776                 n = n->next;
1777         }
1778 
1779         h->flags |= HTML_NOSPACE;
1780         print_text(h, ">");
1781 
1782         for ( ; n; n = n->next) {
1783                 assert(MDOC_TEXT == n->type);
1784                 print_text(h, n->string);
1785         }
1786 
1787         return(0);
1788 }
1789 
1790 
1791 /* ARGSUSED */
1792 static int
1793 mdoc_ic_pre(MDOC_ARGS)
1794 {
1795         struct htmlpair tag;
1796 
1797         PAIR_CLASS_INIT(&tag, "cmd");
1798         print_otag(h, TAG_B, 1, &tag);
1799         return(1);
1800 }
1801 
1802 
1803 /* ARGSUSED */
1804 static int
1805 mdoc_rv_pre(MDOC_ARGS)
1806 {
1807         struct htmlpair  tag;
1808         struct tag      *t;
1809         int              nchild;
1810 
1811         if (n->prev)
1812                 print_otag(h, TAG_BR, 0, NULL);
1813 
1814         PAIR_CLASS_INIT(&tag, "fname");
1815 
1816         print_text(h, "The");
1817 
1818         nchild = n->nchild;
1819         for (n = n->child; n; n = n->next) {
1820                 assert(MDOC_TEXT == n->type);
1821 
1822                 t = print_otag(h, TAG_B, 1, &tag);
1823                 print_text(h, n->string);
1824                 print_tagq(h, t);
1825 
1826                 h->flags |= HTML_NOSPACE;
1827                 print_text(h, "()");
1828 
1829                 if (nchild > 2 && n->next) {
1830                         h->flags |= HTML_NOSPACE;
1831                         print_text(h, ",");
1832                 }
1833 
1834                 if (n->next && NULL == n->next->next)
1835                         print_text(h, "and");
1836         }
1837 
1838         if (nchild > 1)
1839                 print_text(h, "functions return");
1840         else
1841                 print_text(h, "function returns");
1842 
1843         print_text(h, "the value 0 if successful; otherwise the value "
1844                         "-1 is returned and the global variable");
1845 
1846         PAIR_CLASS_INIT(&tag, "var");
1847         t = print_otag(h, TAG_B, 1, &tag);
1848         print_text(h, "errno");
1849         print_tagq(h, t);
1850         print_text(h, "is set to indicate the error.");
1851         return(0);
1852 }
1853 
1854 
1855 /* ARGSUSED */
1856 static int
1857 mdoc_va_pre(MDOC_ARGS)
1858 {
1859         struct htmlpair tag;
1860 
1861         PAIR_CLASS_INIT(&tag, "var");
1862         print_otag(h, TAG_B, 1, &tag);
1863         return(1);
1864 }
1865 
1866 
1867 /* ARGSUSED */
1868 static int
1869 mdoc_ap_pre(MDOC_ARGS)
1870 {
1871         
1872         h->flags |= HTML_NOSPACE;
1873         print_text(h, "\\(aq");
1874         h->flags |= HTML_NOSPACE;
1875         return(1);
1876 }
1877 
1878 
1879 /* ARGSUSED */
1880 static int
1881 mdoc_bf_pre(MDOC_ARGS)
1882 {
1883         struct htmlpair  tag[2];
1884         struct roffsu    su;
1885 
1886         if (MDOC_HEAD == n->type)
1887                 return(0);
1888         else if (MDOC_BODY != n->type)
1889                 return(1);
1890 
1891         if (FONT_Em == n->norm->Bf.font) 
1892                 PAIR_CLASS_INIT(&tag[0], "emph");
1893         else if (FONT_Sy == n->norm->Bf.font) 
1894                 PAIR_CLASS_INIT(&tag[0], "symb");
1895         else if (FONT_Li == n->norm->Bf.font) 
1896                 PAIR_CLASS_INIT(&tag[0], "lit");
1897         else
1898                 PAIR_CLASS_INIT(&tag[0], "none");
1899 
1900         /* 
1901          * We want this to be inline-formatted, but needs to be div to
1902          * accept block children. 
1903          */
1904         bufinit(h);
1905         bufcat_style(h, "display", "inline");
1906         SCALE_HS_INIT(&su, 1);
1907         /* Needs a left-margin for spacing. */
1908         bufcat_su(h, "margin-left", &su);
1909         PAIR_STYLE_INIT(&tag[1], h);
1910         print_otag(h, TAG_DIV, 2, tag);
1911         return(1);
1912 }
1913 
1914 
1915 /* ARGSUSED */
1916 static int
1917 mdoc_ms_pre(MDOC_ARGS)
1918 {
1919         struct htmlpair tag;
1920 
1921         PAIR_CLASS_INIT(&tag, "symb");
1922         print_otag(h, TAG_SPAN, 1, &tag);
1923         return(1);
1924 }
1925 
1926 
1927 /* ARGSUSED */
1928 static int
1929 mdoc_igndelim_pre(MDOC_ARGS)
1930 {
1931 
1932         h->flags |= HTML_IGNDELIM;
1933         return(1);
1934 }
1935 
1936 
1937 /* ARGSUSED */
1938 static void
1939 mdoc_pf_post(MDOC_ARGS)
1940 {
1941 
1942         h->flags |= HTML_NOSPACE;
1943 }
1944 
1945 
1946 /* ARGSUSED */
1947 static int
1948 mdoc_rs_pre(MDOC_ARGS)
1949 {
1950         struct htmlpair  tag;
1951 
1952         if (MDOC_BLOCK != n->type)
1953                 return(1);
1954 
1955         if (n->prev && SEC_SEE_ALSO == n->sec)
1956                 print_otag(h, TAG_P, 0, NULL);
1957 
1958         PAIR_CLASS_INIT(&tag, "ref");
1959         print_otag(h, TAG_SPAN, 1, &tag);
1960         return(1);
1961 }
1962 
1963 
1964 
1965 /* ARGSUSED */
1966 static int
1967 mdoc_li_pre(MDOC_ARGS)
1968 {
1969         struct htmlpair tag;
1970 
1971         PAIR_CLASS_INIT(&tag, "lit");
1972         print_otag(h, TAG_CODE, 1, &tag);
1973         return(1);
1974 }
1975 
1976 
1977 /* ARGSUSED */
1978 static int
1979 mdoc_sy_pre(MDOC_ARGS)
1980 {
1981         struct htmlpair tag;
1982 
1983         PAIR_CLASS_INIT(&tag, "symb");
1984         print_otag(h, TAG_SPAN, 1, &tag);
1985         return(1);
1986 }
1987 
1988 
1989 /* ARGSUSED */
1990 static int
1991 mdoc_bt_pre(MDOC_ARGS)
1992 {
1993 
1994         print_text(h, "is currently in beta test.");
1995         return(0);
1996 }
1997 
1998 
1999 /* ARGSUSED */
2000 static int
2001 mdoc_ud_pre(MDOC_ARGS)
2002 {
2003 
2004         print_text(h, "currently under development.");
2005         return(0);
2006 }
2007 
2008 
2009 /* ARGSUSED */
2010 static int
2011 mdoc_lb_pre(MDOC_ARGS)
2012 {
2013         struct htmlpair tag;
2014 
2015         if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags && n->prev)
2016                 print_otag(h, TAG_BR, 0, NULL);
2017 
2018         PAIR_CLASS_INIT(&tag, "lib");
2019         print_otag(h, TAG_SPAN, 1, &tag);
2020         return(1);
2021 }
2022 
2023 
2024 /* ARGSUSED */
2025 static int
2026 mdoc__x_pre(MDOC_ARGS)
2027 {
2028         struct htmlpair tag[2];
2029         enum htmltag    t;
2030 
2031         t = TAG_SPAN;
2032 
2033         switch (n->tok) {
2034         case(MDOC__A):
2035                 PAIR_CLASS_INIT(&tag[0], "ref-auth");
2036                 if (n->prev && MDOC__A == n->prev->tok)
2037                         if (NULL == n->next || MDOC__A != n->next->tok)
2038                                 print_text(h, "and");
2039                 break;
2040         case(MDOC__B):
2041                 PAIR_CLASS_INIT(&tag[0], "ref-book");
2042                 t = TAG_I;
2043                 break;
2044         case(MDOC__C):
2045                 PAIR_CLASS_INIT(&tag[0], "ref-city");
2046                 break;
2047         case(MDOC__D):
2048                 PAIR_CLASS_INIT(&tag[0], "ref-date");
2049                 break;
2050         case(MDOC__I):
2051                 PAIR_CLASS_INIT(&tag[0], "ref-issue");
2052                 t = TAG_I;
2053                 break;
2054         case(MDOC__J):
2055                 PAIR_CLASS_INIT(&tag[0], "ref-jrnl");
2056                 t = TAG_I;
2057                 break;
2058         case(MDOC__N):
2059                 PAIR_CLASS_INIT(&tag[0], "ref-num");
2060                 break;
2061         case(MDOC__O):
2062                 PAIR_CLASS_INIT(&tag[0], "ref-opt");
2063                 break;
2064         case(MDOC__P):
2065                 PAIR_CLASS_INIT(&tag[0], "ref-page");
2066                 break;
2067         case(MDOC__Q):
2068                 PAIR_CLASS_INIT(&tag[0], "ref-corp");
2069                 break;
2070         case(MDOC__R):
2071                 PAIR_CLASS_INIT(&tag[0], "ref-rep");
2072                 break;
2073         case(MDOC__T):
2074                 PAIR_CLASS_INIT(&tag[0], "ref-title");
2075                 break;
2076         case(MDOC__U):
2077                 PAIR_CLASS_INIT(&tag[0], "link-ref");
2078                 break;
2079         case(MDOC__V):
2080                 PAIR_CLASS_INIT(&tag[0], "ref-vol");
2081                 break;
2082         default:
2083                 abort();
2084                 /* NOTREACHED */
2085         }
2086 
2087         if (MDOC__U != n->tok) {
2088                 print_otag(h, t, 1, tag);
2089                 return(1);
2090         }
2091 
2092         PAIR_HREF_INIT(&tag[1], n->child->string);
2093         print_otag(h, TAG_A, 2, tag);
2094 
2095         return(1);
2096 }
2097 
2098 
2099 /* ARGSUSED */
2100 static void
2101 mdoc__x_post(MDOC_ARGS)
2102 {
2103 
2104         if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
2105                 if (NULL == n->next->next || MDOC__A != n->next->next->tok)
2106                         if (NULL == n->prev || MDOC__A != n->prev->tok)
2107                                 return;
2108 
2109         /* TODO: %U */
2110 
2111         if (NULL == n->parent || MDOC_Rs != n->parent->tok)
2112                 return;
2113 
2114         h->flags |= HTML_NOSPACE;
2115         print_text(h, n->next ? "," : ".");
2116 }
2117 
2118 
2119 /* ARGSUSED */
2120 static int
2121 mdoc_bk_pre(MDOC_ARGS)
2122 {
2123 
2124         switch (n->type) {
2125         case (MDOC_BLOCK):
2126                 break;
2127         case (MDOC_HEAD):
2128                 return(0);
2129         case (MDOC_BODY):
2130                 if (n->parent->args || 0 == n->prev->nchild)
2131                         h->flags |= HTML_PREKEEP;
2132                 break;
2133         default:
2134                 abort();
2135                 /* NOTREACHED */
2136         }
2137 
2138         return(1);
2139 }
2140 
2141 
2142 /* ARGSUSED */
2143 static void
2144 mdoc_bk_post(MDOC_ARGS)
2145 {
2146 
2147         if (MDOC_BODY == n->type)
2148                 h->flags &= ~(HTML_KEEP | HTML_PREKEEP);
2149 }
2150 
2151 
2152 /* ARGSUSED */
2153 static int
2154 mdoc_quote_pre(MDOC_ARGS)
2155 {
2156         struct htmlpair tag;
2157 
2158         if (MDOC_BODY != n->type)
2159                 return(1);
2160 
2161         switch (n->tok) {
2162         case (MDOC_Ao):
2163                 /* FALLTHROUGH */
2164         case (MDOC_Aq):
2165                 print_text(h, "\\(la");
2166                 break;
2167         case (MDOC_Bro):
2168                 /* FALLTHROUGH */
2169         case (MDOC_Brq):
2170                 print_text(h, "\\(lC");
2171                 break;
2172         case (MDOC_Bo):
2173                 /* FALLTHROUGH */
2174         case (MDOC_Bq):
2175                 print_text(h, "\\(lB");
2176                 break;
2177         case (MDOC_Oo):
2178                 /* FALLTHROUGH */
2179         case (MDOC_Op):
2180                 print_text(h, "\\(lB");
2181                 h->flags |= HTML_NOSPACE;
2182                 PAIR_CLASS_INIT(&tag, "opt");
2183                 print_otag(h, TAG_SPAN, 1, &tag);
2184                 break;
2185         case (MDOC_Eo):
2186                 break;
2187         case (MDOC_Do):
2188                 /* FALLTHROUGH */
2189         case (MDOC_Dq):
2190                 /* FALLTHROUGH */
2191         case (MDOC_Qo):
2192                 /* FALLTHROUGH */
2193         case (MDOC_Qq):
2194                 print_text(h, "\\(lq");
2195                 break;
2196         case (MDOC_Po):
2197                 /* FALLTHROUGH */
2198         case (MDOC_Pq):
2199                 print_text(h, "(");
2200                 break;
2201         case (MDOC_Ql):
2202                 print_text(h, "\\(oq");
2203                 h->flags |= HTML_NOSPACE;
2204                 PAIR_CLASS_INIT(&tag, "lit");
2205                 print_otag(h, TAG_CODE, 1, &tag);
2206                 break;
2207         case (MDOC_So):
2208                 /* FALLTHROUGH */
2209         case (MDOC_Sq):
2210                 print_text(h, "\\(oq");
2211                 break;
2212         default:
2213                 abort();
2214                 /* NOTREACHED */
2215         }
2216 
2217         h->flags |= HTML_NOSPACE;
2218         return(1);
2219 }
2220 
2221 
2222 /* ARGSUSED */
2223 static void
2224 mdoc_quote_post(MDOC_ARGS)
2225 {
2226 
2227         if (MDOC_BODY != n->type)
2228                 return;
2229 
2230         h->flags |= HTML_NOSPACE;
2231 
2232         switch (n->tok) {
2233         case (MDOC_Ao):
2234                 /* FALLTHROUGH */
2235         case (MDOC_Aq):
2236                 print_text(h, "\\(ra");
2237                 break;
2238         case (MDOC_Bro):
2239                 /* FALLTHROUGH */
2240         case (MDOC_Brq):
2241                 print_text(h, "\\(rC");
2242                 break;
2243         case (MDOC_Oo):
2244                 /* FALLTHROUGH */
2245         case (MDOC_Op):
2246                 /* FALLTHROUGH */
2247         case (MDOC_Bo):
2248                 /* FALLTHROUGH */
2249         case (MDOC_Bq):
2250                 print_text(h, "\\(rB");
2251                 break;
2252         case (MDOC_Eo):
2253                 break;
2254         case (MDOC_Qo):
2255                 /* FALLTHROUGH */
2256         case (MDOC_Qq):
2257                 /* FALLTHROUGH */
2258         case (MDOC_Do):
2259                 /* FALLTHROUGH */
2260         case (MDOC_Dq):
2261                 print_text(h, "\\(rq");
2262                 break;
2263         case (MDOC_Po):
2264                 /* FALLTHROUGH */
2265         case (MDOC_Pq):
2266                 print_text(h, ")");
2267                 break;
2268         case (MDOC_Ql):
2269                 /* FALLTHROUGH */
2270         case (MDOC_So):
2271                 /* FALLTHROUGH */
2272         case (MDOC_Sq):
2273                 print_text(h, "\\(cq");
2274                 break;
2275         default:
2276                 abort();
2277                 /* NOTREACHED */
2278         }
2279 }
2280 
2281