man_action.c

   1 /*      $Id: man_action.c,v 1.33 2010/05/15 20:51:40 kristaps Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009 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 <assert.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "libman.h"
  26 #include "libmandoc.h"
  27
  28 struct  actions {
  29         int     (*post)(struct man *);
  30 };
  31
  32 static  int       post_TH(struct man *);
  33 static  int       post_de(struct man *);
  34 static  int       post_fi(struct man *);
  35 static  int       post_nf(struct man *);
  36
  37 const   struct actions man_actions[MAN_MAX] = {
  38         { NULL }, /* br */
  39         { post_TH }, /* TH */
  40         { NULL }, /* SH */
  41         { NULL }, /* SS */
  42         { NULL }, /* TP */
  43         { NULL }, /* LP */
  44         { NULL }, /* PP */
  45         { NULL }, /* P */
  46         { NULL }, /* IP */
  47         { NULL }, /* HP */
  48         { NULL }, /* SM */
  49         { NULL }, /* SB */
  50         { NULL }, /* BI */
  51         { NULL }, /* IB */
  52         { NULL }, /* BR */
  53         { NULL }, /* RB */
  54         { NULL }, /* R */
  55         { NULL }, /* B */
  56         { NULL }, /* I */
  57         { NULL }, /* IR */
  58         { NULL }, /* RI */
  59         { NULL }, /* na */
  60         { NULL }, /* i */
  61         { NULL }, /* sp */
  62         { post_nf }, /* nf */
  63         { post_fi }, /* fi */
  64         { NULL }, /* r */
  65         { NULL }, /* RE */
  66         { NULL }, /* RS */
  67         { NULL }, /* DT */
  68         { NULL }, /* UC */
  69         { NULL }, /* PD */
  70         { NULL }, /* Sp */
  71         { post_nf }, /* Vb */
  72         { post_fi }, /* Ve */
  73         { post_de }, /* de */
  74         { post_de }, /* dei */
  75         { post_de }, /* am */
  76         { post_de }, /* ami */
  77         { NULL }, /* . */
  78 };
  79
  80
  81 int
  82 man_action_post(struct man *m)
  83 {
  84
  85         if (MAN_ACTED & m->last->flags)
  86                 return(1);
  87         m->last->flags |= MAN_ACTED;
  88
  89         switch (m->last->type) {
  90         case (MAN_TEXT):
  91                 /* FALLTHROUGH */
  92         case (MAN_ROOT):
  93                 return(1);
  94         default:
  95                 break;
  96         }
  97
  98         if (NULL == man_actions[m->last->tok].post)
  99                 return(1);
 100         return((*man_actions[m->last->tok].post)(m));
 101 }
 102
 103
 104 static int
 105 post_fi(struct man *m)
 106 {
 107
 108         if ( ! (MAN_LITERAL & m->flags))
 109                 if ( ! man_nwarn(m, m->last, WNLITERAL))
 110                         return(0);
 111         m->flags &= ~MAN_LITERAL;
 112         return(1);
 113 }
 114
 115
 116 static int
 117 post_de(struct man *m)
 118 {
 119
 120         /*
 121          * XXX: for the time being, we indiscriminately remove roff
 122          * instructions from the parse stream.
 123          */
 124         if (MAN_BLOCK == m->last->type)
 125                 man_node_delete(m, m->last);
 126         return(1);
 127 }
 128
 129
 130 static int
 131 post_nf(struct man *m)
 132 {
 133
 134         if (MAN_LITERAL & m->flags)
 135                 if ( ! man_nwarn(m, m->last, WOLITERAL))
 136                         return(0);
 137         m->flags |= MAN_LITERAL;
 138         return(1);
 139 }
 140
 141
 142 static int
 143 post_TH(struct man *m)
 144 {
 145         struct man_node *n;
 146
 147         if (m->meta.title)
 148                 free(m->meta.title);
 149         if (m->meta.vol)
 150                 free(m->meta.vol);
 151         if (m->meta.source)
 152                 free(m->meta.source);
 153         if (m->meta.msec)
 154                 free(m->meta.msec);
 155
 156         m->meta.title = m->meta.vol =
 157                 m->meta.msec = m->meta.source = NULL;
 158         m->meta.date = 0;
 159
 160         /* ->TITLE<- MSEC DATE SOURCE VOL */
 161
 162         n = m->last->child;
 163         assert(n);
 164         m->meta.title = mandoc_strdup(n->string);
 165
 166         /* TITLE ->MSEC<- DATE SOURCE VOL */
 167
 168         n = n->next;
 169         assert(n);
 170         m->meta.msec = mandoc_strdup(n->string);
 171
 172         /* TITLE MSEC ->DATE<- SOURCE VOL */
 173
 174         n = n->next;
 175         if (n) {
 176                 m->meta.date = mandoc_a2time
 177                         (MTIME_ISO_8601, n->string);
 178                 if (0 == m->meta.date) {
 179                         if ( ! man_nwarn(m, n, WDATE))
 180                                 return(0);
 181                         m->meta.date = time(NULL);
 182                 }
 183         } else
 184                 m->meta.date = time(NULL);
 185
 186         /* TITLE MSEC DATE ->SOURCE<- VOL */
 187
 188         if (n && (n = n->next))
 189                 m->meta.source = mandoc_strdup(n->string);
 190
 191         /* TITLE MSEC DATE SOURCE ->VOL<- */
 192
 193         if (n && (n = n->next))
 194                 m->meta.vol = mandoc_strdup(n->string);
 195
 196         /*
 197          * Remove the `TH' node after we've processed it for our
 198          * meta-data.
 199          */
 200         man_node_delete(m, m->last);
 201         return(1);
 202 }