man_action.c

   1 /*      $Id: man_action.c,v 1.31 2010/05/15 15:54:39 kristaps Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
   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         { post_de }, /* ig */
  78         { NULL }, /* . */
  79 };
  80
  81
  82 int
  83 man_action_post(struct man *m)
  84 {
  85
  86         if (MAN_ACTED & m->last->flags)
  87                 return(1);
  88         m->last->flags |= MAN_ACTED;
  89
  90         switch (m->last->type) {
  91         case (MAN_TEXT):
  92                 /* FALLTHROUGH */
  93         case (MAN_ROOT):
  94                 return(1);
  95         default:
  96                 break;
  97         }
  98
  99         if (NULL == man_actions[m->last->tok].post)
 100                 return(1);
 101         return((*man_actions[m->last->tok].post)(m));
 102 }
 103
 104
 105 static int
 106 post_fi(struct man *m)
 107 {
 108
 109         if ( ! (MAN_LITERAL & m->flags))
 110                 if ( ! man_nwarn(m, m->last, WNLITERAL))
 111                         return(0);
 112         m->flags &= ~MAN_LITERAL;
 113         return(1);
 114 }
 115
 116
 117 static int
 118 post_de(struct man *m)
 119 {
 120
 121         /*
 122          * XXX: for the time being, we indiscriminately remove roff
 123          * instructions from the parse stream.
 124          */
 125         if (MAN_BLOCK == m->last->type)
 126                 man_node_delete(m, m->last);
 127         return(1);
 128 }
 129
 130
 131 static int
 132 post_nf(struct man *m)
 133 {
 134
 135         if (MAN_LITERAL & m->flags)
 136                 if ( ! man_nwarn(m, m->last, WOLITERAL))
 137                         return(0);
 138         m->flags |= MAN_LITERAL;
 139         return(1);
 140 }
 141
 142
 143 static int
 144 post_TH(struct man *m)
 145 {
 146         struct man_node *n;
 147
 148         if (m->meta.title)
 149                 free(m->meta.title);
 150         if (m->meta.vol)
 151                 free(m->meta.vol);
 152         if (m->meta.source)
 153                 free(m->meta.source);
 154
 155         m->meta.title = m->meta.vol =
 156                 m->meta.msec = m->meta.source = NULL;
 157         m->meta.date = 0;
 158
 159         /* ->TITLE<- MSEC DATE SOURCE VOL */
 160
 161         n = m->last->child;
 162         assert(n);
 163         m->meta.title = mandoc_strdup(n->string);
 164
 165         /* TITLE ->MSEC<- DATE SOURCE VOL */
 166
 167         n = n->next;
 168         assert(n);
 169         m->meta.msec = mandoc_strdup(n->string);
 170
 171         /* TITLE MSEC ->DATE<- SOURCE VOL */
 172
 173         n = n->next;
 174         if (n) {
 175                 m->meta.date = mandoc_a2time
 176                         (MTIME_ISO_8601, n->string);
 177                 if (0 == m->meta.date) {
 178                         if ( ! man_nwarn(m, n, WDATE))
 179                                 return(0);
 180                         m->meta.date = time(NULL);
 181                 }
 182         } else
 183                 m->meta.date = time(NULL);
 184
 185         /* TITLE MSEC DATE ->SOURCE<- VOL */
 186
 187         if (n && (n = n->next))
 188                 m->meta.source = mandoc_strdup(n->string);
 189
 190         /* TITLE MSEC DATE SOURCE ->VOL<- */
 191
 192         if (n && (n = n->next))
 193                 m->meta.vol = mandoc_strdup(n->string);
 194
 195         /*
 196          * Remove the `TH' node after we've processed it for our
 197          * meta-data.
 198          */
 199         man_node_delete(m, m->last);
 200         return(1);
 201 }