man_action.c

   1 /*      $Id: man_action.c,v 1.22 2009/10/30 05:58:37 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 #include <sys/utsname.h>
  18
  19 #include <assert.h>
  20 #include <errno.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 #include "libman.h"
  25 #include "libmandoc.h"
  26
  27 struct  actions {
  28         int     (*post)(struct man *);
  29 };
  30
  31 static  int       post_TH(struct man *);
  32 static  int       post_fi(struct man *);
  33 static  int       post_nf(struct man *);
  34
  35 const   struct actions man_actions[MAN_MAX] = {
  36         { NULL }, /* br */
  37         { post_TH }, /* TH */
  38         { NULL }, /* SH */
  39         { NULL }, /* SS */
  40         { NULL }, /* TP */
  41         { NULL }, /* LP */
  42         { NULL }, /* PP */
  43         { NULL }, /* P */
  44         { NULL }, /* IP */
  45         { NULL }, /* HP */
  46         { NULL }, /* SM */
  47         { NULL }, /* SB */
  48         { NULL }, /* BI */
  49         { NULL }, /* IB */
  50         { NULL }, /* BR */
  51         { NULL }, /* RB */
  52         { NULL }, /* R */
  53         { NULL }, /* B */
  54         { NULL }, /* I */
  55         { NULL }, /* IR */
  56         { NULL }, /* RI */
  57         { NULL }, /* na */
  58         { NULL }, /* i */
  59         { NULL }, /* sp */
  60         { post_nf }, /* nf */
  61         { post_fi }, /* fi */
  62         { NULL }, /* r */
  63         { NULL }, /* RE */
  64         { NULL }, /* RS */
  65         { NULL }, /* DT */
  66         { NULL }, /* UC */
  67         { NULL }, /* PD */
  68 };
  69
  70 static  time_t    man_atotime(const char *);
  71 #ifdef __linux__
  72 extern  char     *strptime(const char *, const char *, struct tm *);
  73 #endif
  74
  75
  76 int
  77 man_action_post(struct man *m)
  78 {
  79
  80         if (MAN_ACTED & m->last->flags)
  81                 return(1);
  82         m->last->flags |= MAN_ACTED;
  83
  84         switch (m->last->type) {
  85         case (MAN_TEXT):
  86                 /* FALLTHROUGH */
  87         case (MAN_ROOT):
  88                 return(1);
  89         default:
  90                 break;
  91         }
  92
  93         if (NULL == man_actions[m->last->tok].post)
  94                 return(1);
  95         return((*man_actions[m->last->tok].post)(m));
  96 }
  97
  98
  99 static int
 100 post_fi(struct man *m)
 101 {
 102
 103         if ( ! (MAN_LITERAL & m->flags))
 104                 if ( ! man_nwarn(m, m->last, WNLITERAL))
 105                         return(0);
 106         m->flags &= ~MAN_LITERAL;
 107         return(1);
 108 }
 109
 110
 111 static int
 112 post_nf(struct man *m)
 113 {
 114
 115         if (MAN_LITERAL & m->flags)
 116                 if ( ! man_nwarn(m, m->last, WOLITERAL))
 117                         return(0);
 118         m->flags |= MAN_LITERAL;
 119         return(1);
 120 }
 121
 122
 123 static int
 124 post_TH(struct man *m)
 125 {
 126         struct man_node *n;
 127         char            *ep;
 128         long             lval;
 129
 130         if (m->meta.title)
 131                 free(m->meta.title);
 132         if (m->meta.vol)
 133                 free(m->meta.vol);
 134         if (m->meta.source)
 135                 free(m->meta.source);
 136
 137         m->meta.title = m->meta.vol = m->meta.source = NULL;
 138         m->meta.msec = 0;
 139         m->meta.date = 0;
 140
 141         /* ->TITLE<- MSEC DATE SOURCE VOL */
 142
 143         n = m->last->child;
 144         assert(n);
 145         m->meta.title = mandoc_strdup(n->string);
 146
 147         /* TITLE ->MSEC<- DATE SOURCE VOL */
 148
 149         n = n->next;
 150         assert(n);
 151
 152         errno = 0;
 153         lval = strtol(n->string, &ep, 10);
 154         if (n->string[0] != '\0' && *ep == '\0')
 155                 m->meta.msec = (int)lval;
 156         else if ( ! man_nwarn(m, n, WMSEC))
 157                 return(0);
 158
 159         /* TITLE MSEC ->DATE<- SOURCE VOL */
 160
 161         if (NULL == (n = n->next))
 162                 m->meta.date = time(NULL);
 163         else if (0 == (m->meta.date = man_atotime(n->string))) {
 164                 if ( ! man_nwarn(m, n, WDATE))
 165                         return(0);
 166                 m->meta.date = time(NULL);
 167         }
 168
 169         /* TITLE MSEC DATE ->SOURCE<- VOL */
 170
 171         if (n && (n = n->next))
 172                 m->meta.source = mandoc_strdup(n->string);
 173
 174         /* TITLE MSEC DATE SOURCE ->VOL<- */
 175
 176         if (n && (n = n->next))
 177                 m->meta.vol = mandoc_strdup(n->string);
 178
 179         /*
 180          * The end document shouldn't have the prologue macros as part
 181          * of the syntax tree (they encompass only meta-data).
 182          */
 183
 184         if (m->last->parent->child == m->last) {
 185                 m->last->parent->child = NULL;
 186                 n = m->last;
 187                 m->last = m->last->parent;
 188                 m->next = MAN_NEXT_CHILD;
 189         } else {
 190                 assert(m->last->prev);
 191                 m->last->prev->next = NULL;
 192                 n = m->last;
 193                 m->last = m->last->prev;
 194                 m->next = MAN_NEXT_SIBLING;
 195         }
 196
 197         man_node_freelist(n);
 198         return(1);
 199 }
 200
 201
 202 static time_t
 203 man_atotime(const char *p)
 204 {
 205         struct tm        tm;
 206         char            *pp;
 207
 208         memset(&tm, 0, sizeof(struct tm));
 209
 210         if ((pp = strptime(p, "%b %d %Y", &tm)) && 0 == *pp)
 211                 return(mktime(&tm));
 212         if ((pp = strptime(p, "%d %b %Y", &tm)) && 0 == *pp)
 213                 return(mktime(&tm));
 214         if ((pp = strptime(p, "%b %d, %Y", &tm)) && 0 == *pp)
 215                 return(mktime(&tm));
 216         if ((pp = strptime(p, "%b %Y", &tm)) && 0 == *pp)
 217                 return(mktime(&tm));
 218
 219         return(0);
 220 }