man_action.c

   1 /*      $Id: man_action.c,v 1.14 2009/07/24 20:22:24 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
  26 #ifdef __linux__
  27 extern  char            *strptime(const char *, const char *, struct tm *);
  28 #endif
  29
  30 struct  actions {
  31         int     (*post)(struct man *);
  32 };
  33
  34
  35 static  int       post_TH(struct man *);
  36 static  time_t    man_atotime(const char *);
  37
  38 const   struct actions man_actions[MAN_MAX] = {
  39         { NULL }, /* br */
  40         { post_TH }, /* TH */
  41         { NULL }, /* SH */
  42         { NULL }, /* SS */
  43         { NULL }, /* TP */
  44         { NULL }, /* LP */
  45         { NULL }, /* PP */
  46         { NULL }, /* P */
  47         { NULL }, /* IP */
  48         { NULL }, /* HP */
  49         { NULL }, /* SM */
  50         { NULL }, /* SB */
  51         { NULL }, /* BI */
  52         { NULL }, /* IB */
  53         { NULL }, /* BR */
  54         { NULL }, /* RB */
  55         { NULL }, /* R */
  56         { NULL }, /* B */
  57         { NULL }, /* I */
  58         { NULL }, /* IR */
  59         { NULL }, /* RI */
  60         { NULL }, /* na */
  61         { NULL }, /* i */
  62         { NULL }, /* sp */
  63 };
  64
  65
  66 int
  67 man_action_post(struct man *m)
  68 {
  69
  70         if (MAN_ACTED & m->last->flags)
  71                 return(1);
  72         m->last->flags |= MAN_ACTED;
  73
  74         switch (m->last->type) {
  75         case (MAN_TEXT):
  76                 break;
  77         case (MAN_ROOT):
  78                 break;
  79         default:
  80                 if (NULL == man_actions[m->last->tok].post)
  81                         break;
  82                 return((*man_actions[m->last->tok].post)(m));
  83         }
  84         return(1);
  85 }
  86
  87
  88 static int
  89 post_TH(struct man *m)
  90 {
  91         struct man_node *n;
  92         char            *ep;
  93         long             lval;
  94
  95         if (m->meta.title)
  96                 free(m->meta.title);
  97         if (m->meta.vol)
  98                 free(m->meta.vol);
  99         if (m->meta.source)
 100                 free(m->meta.source);
 101
 102         m->meta.title = m->meta.vol = m->meta.source = NULL;
 103         m->meta.msec = 0;
 104         m->meta.date = 0;
 105
 106         /* ->TITLE<- MSEC DATE SOURCE VOL */
 107
 108         n = m->last->child;
 109         assert(n);
 110
 111         if (NULL == (m->meta.title = strdup(n->string)))
 112                 return(man_nerr(m, n, WNMEM));
 113
 114         /* TITLE ->MSEC<- DATE SOURCE VOL */
 115
 116         n = n->next;
 117         assert(n);
 118
 119         errno = 0;
 120         lval = strtol(n->string, &ep, 10);
 121         if (n->string[0] != '\0' && *ep == '\0')
 122                 m->meta.msec = (int)lval;
 123         else if ( ! man_nwarn(m, n, WMSEC))
 124                 return(0);
 125
 126         /* TITLE MSEC ->DATE<- SOURCE VOL */
 127
 128         if (NULL == (n = n->next))
 129                 m->meta.date = time(NULL);
 130         else if (0 == (m->meta.date = man_atotime(n->string))) {
 131                 if ( ! man_nwarn(m, n, WDATE))
 132                         return(0);
 133                 m->meta.date = time(NULL);
 134         }
 135
 136         /* TITLE MSEC DATE ->SOURCE<- VOL */
 137
 138         if (n && (n = n->next))
 139                 if (NULL == (m->meta.source = strdup(n->string)))
 140                         return(man_nerr(m, n, WNMEM));
 141
 142         /* TITLE MSEC DATE SOURCE ->VOL<- */
 143
 144         if (n && (n = n->next))
 145                 if (NULL == (m->meta.vol = strdup(n->string)))
 146                         return(man_nerr(m, n, WNMEM));
 147
 148         /*
 149          * The end document shouldn't have the prologue macros as part
 150          * of the syntax tree (they encompass only meta-data).
 151          */
 152
 153         if (m->last->parent->child == m->last) {
 154                 assert(MAN_ROOT == m->last->parent->type);
 155                 m->last->parent->child = NULL;
 156                 n = m->last;
 157                 m->last = m->last->parent;
 158                 m->next = MAN_NEXT_CHILD;
 159                 assert(m->last == m->first);
 160         } else {
 161                 assert(m->last->prev);
 162                 m->last->prev->next = NULL;
 163                 n = m->last;
 164                 m->last = m->last->prev;
 165                 m->next = MAN_NEXT_SIBLING;
 166         }
 167
 168         man_node_freelist(n);
 169         return(1);
 170 }
 171
 172
 173 static time_t
 174 man_atotime(const char *p)
 175 {
 176         struct tm        tm;
 177         char            *pp;
 178
 179         bzero(&tm, sizeof(struct tm));
 180
 181         if ((pp = strptime(p, "%b %d %Y", &tm)) && 0 == *pp)
 182                 return(mktime(&tm));
 183         if ((pp = strptime(p, "%d %b %Y", &tm)) && 0 == *pp)
 184                 return(mktime(&tm));
 185         if ((pp = strptime(p, "%b %d, %Y", &tm)) && 0 == *pp)
 186                 return(mktime(&tm));
 187         if ((pp = strptime(p, "%b %Y", &tm)) && 0 == *pp)
 188                 return(mktime(&tm));
 189
 190         return(0);
 191 }