mdoc_state.c

   1 /* $Id: mdoc_state.c,v 1.18 2022/04/14 16:43:44 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2014, 2015, 2017, 2021 Ingo Schwarze <schwarze@openbsd.org>
   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 #include "config.h"
  18
  19 #include <sys/types.h>
  20
  21 #include <assert.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #if DEBUG_MEMORY
  27 #include "mandoc_dbg.h"
  28 #endif
  29 #include "mandoc.h"
  30 #include "roff.h"
  31 #include "mdoc.h"
  32 #include "libmandoc.h"
  33 #include "roff_int.h"
  34 #include "libmdoc.h"
  35
  36 #define STATE_ARGS  struct roff_man *mdoc, struct roff_node *n
  37
  38 typedef void    (*state_handler)(STATE_ARGS);
  39
  40 static  void     state_bl(STATE_ARGS);
  41 static  void     state_sh(STATE_ARGS);
  42 static  void     state_sm(STATE_ARGS);
  43
  44 static  const state_handler state_handlers[MDOC_MAX - MDOC_Dd] = {
  45         NULL,           /* Dd */
  46         NULL,           /* Dt */
  47         NULL,           /* Os */
  48         state_sh,       /* Sh */
  49         NULL,           /* Ss */
  50         NULL,           /* Pp */
  51         NULL,           /* D1 */
  52         NULL,           /* Dl */
  53         NULL,           /* Bd */
  54         NULL,           /* Ed */
  55         state_bl,       /* Bl */
  56         NULL,           /* El */
  57         NULL,           /* It */
  58         NULL,           /* Ad */
  59         NULL,           /* An */
  60         NULL,           /* Ap */
  61         NULL,           /* Ar */
  62         NULL,           /* Cd */
  63         NULL,           /* Cm */
  64         NULL,           /* Dv */
  65         NULL,           /* Er */
  66         NULL,           /* Ev */
  67         NULL,           /* Ex */
  68         NULL,           /* Fa */
  69         NULL,           /* Fd */
  70         NULL,           /* Fl */
  71         NULL,           /* Fn */
  72         NULL,           /* Ft */
  73         NULL,           /* Ic */
  74         NULL,           /* In */
  75         NULL,           /* Li */
  76         NULL,           /* Nd */
  77         NULL,           /* Nm */
  78         NULL,           /* Op */
  79         NULL,           /* Ot */
  80         NULL,           /* Pa */
  81         NULL,           /* Rv */
  82         NULL,           /* St */
  83         NULL,           /* Va */
  84         NULL,           /* Vt */
  85         NULL,           /* Xr */
  86         NULL,           /* %A */
  87         NULL,           /* %B */
  88         NULL,           /* %D */
  89         NULL,           /* %I */
  90         NULL,           /* %J */
  91         NULL,           /* %N */
  92         NULL,           /* %O */
  93         NULL,           /* %P */
  94         NULL,           /* %R */
  95         NULL,           /* %T */
  96         NULL,           /* %V */
  97         NULL,           /* Ac */
  98         NULL,           /* Ao */
  99         NULL,           /* Aq */
 100         NULL,           /* At */
 101         NULL,           /* Bc */
 102         NULL,           /* Bf */
 103         NULL,           /* Bo */
 104         NULL,           /* Bq */
 105         NULL,           /* Bsx */
 106         NULL,           /* Bx */
 107         NULL,           /* Db */
 108         NULL,           /* Dc */
 109         NULL,           /* Do */
 110         NULL,           /* Dq */
 111         NULL,           /* Ec */
 112         NULL,           /* Ef */
 113         NULL,           /* Em */
 114         NULL,           /* Eo */
 115         NULL,           /* Fx */
 116         NULL,           /* Ms */
 117         NULL,           /* No */
 118         NULL,           /* Ns */
 119         NULL,           /* Nx */
 120         NULL,           /* Ox */
 121         NULL,           /* Pc */
 122         NULL,           /* Pf */
 123         NULL,           /* Po */
 124         NULL,           /* Pq */
 125         NULL,           /* Qc */
 126         NULL,           /* Ql */
 127         NULL,           /* Qo */
 128         NULL,           /* Qq */
 129         NULL,           /* Re */
 130         NULL,           /* Rs */
 131         NULL,           /* Sc */
 132         NULL,           /* So */
 133         NULL,           /* Sq */
 134         state_sm,       /* Sm */
 135         NULL,           /* Sx */
 136         NULL,           /* Sy */
 137         NULL,           /* Tn */
 138         NULL,           /* Ux */
 139         NULL,           /* Xc */
 140         NULL,           /* Xo */
 141         NULL,           /* Fo */
 142         NULL,           /* Fc */
 143         NULL,           /* Oo */
 144         NULL,           /* Oc */
 145         NULL,           /* Bk */
 146         NULL,           /* Ek */
 147         NULL,           /* Bt */
 148         NULL,           /* Hf */
 149         NULL,           /* Fr */
 150         NULL,           /* Ud */
 151         NULL,           /* Lb */
 152         NULL,           /* Lp */
 153         NULL,           /* Lk */
 154         NULL,           /* Mt */
 155         NULL,           /* Brq */
 156         NULL,           /* Bro */
 157         NULL,           /* Brc */
 158         NULL,           /* %C */
 159         NULL,           /* Es */
 160         NULL,           /* En */
 161         NULL,           /* Dx */
 162         NULL,           /* %Q */
 163         NULL,           /* %U */
 164         NULL,           /* Ta */
 165         NULL,           /* Tg */
 166 };
 167
 168
 169 void
 170 mdoc_state(struct roff_man *mdoc, struct roff_node *n)
 171 {
 172         state_handler handler;
 173
 174         if (n->tok == TOKEN_NONE || n->tok < ROFF_MAX)
 175                 return;
 176
 177         assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
 178         if ((mdoc_macro(n->tok)->flags & MDOC_PROLOGUE) == 0)
 179                 mdoc->flags |= MDOC_PBODY;
 180
 181         handler = state_handlers[n->tok - MDOC_Dd];
 182         if (*handler)
 183                 (*handler)(mdoc, n);
 184 }
 185
 186 static void
 187 state_bl(STATE_ARGS)
 188 {
 189         struct mdoc_arg *args;
 190         size_t           i;
 191
 192         if (n->type != ROFFT_HEAD || n->parent->args == NULL)
 193                 return;
 194
 195         args = n->parent->args;
 196         for (i = 0; i < args->argc; i++) {
 197                 switch(args->argv[i].arg) {
 198                 case MDOC_Diag:
 199                         n->norm->Bl.type = LIST_diag;
 200                         return;
 201                 case MDOC_Column:
 202                         n->norm->Bl.type = LIST_column;
 203                         return;
 204                 default:
 205                         break;
 206                 }
 207         }
 208 }
 209
 210 static void
 211 state_sh(STATE_ARGS)
 212 {
 213         struct roff_node *nch;
 214         char             *secname;
 215
 216         if (n->type != ROFFT_HEAD)
 217                 return;
 218
 219         if ( ! (n->flags & NODE_VALID)) {
 220                 secname = NULL;
 221                 deroff(&secname, n);
 222
 223                 /*
 224                  * Set the section attribute for the BLOCK, HEAD,
 225                  * and HEAD children; the latter can only be TEXT
 226                  * nodes, so no recursion is needed.  For other
 227                  * nodes, including the .Sh BODY, this is done
 228                  * when allocating the node data structures, but
 229                  * for .Sh BLOCK and HEAD, the section is still
 230                  * unknown at that time.
 231                  */
 232
 233                 n->sec = n->parent->sec = secname == NULL ?
 234                     SEC_CUSTOM : mdoc_a2sec(secname);
 235                 for (nch = n->child; nch != NULL; nch = nch->next)
 236                         nch->sec = n->sec;
 237                 free(secname);
 238         }
 239
 240         if ((mdoc->lastsec = n->sec) == SEC_SYNOPSIS) {
 241                 roff_setreg(mdoc->roff, "nS", 1, '=');
 242                 mdoc->flags |= MDOC_SYNOPSIS;
 243         } else {
 244                 roff_setreg(mdoc->roff, "nS", 0, '=');
 245                 mdoc->flags &= ~MDOC_SYNOPSIS;
 246         }
 247 }
 248
 249 static void
 250 state_sm(STATE_ARGS)
 251 {
 252
 253         if (n->child == NULL)
 254                 mdoc->flags ^= MDOC_SMOFF;
 255         else if ( ! strcmp(n->child->string, "on"))
 256                 mdoc->flags &= ~MDOC_SMOFF;
 257         else if ( ! strcmp(n->child->string, "off"))
 258                 mdoc->flags |= MDOC_SMOFF;
 259 }