man_action.c

   1 /* $Id: man_action.c,v 1.3 2009/03/25 16:08:30 kristaps Exp $ */
   2 /*
   3  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@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
   7  * above copyright notice and this permission notice appear in all
   8  * copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
  11  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  12  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
  13  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  14  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  15  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  16  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  17  * PERFORMANCE OF THIS SOFTWARE.
  18  */
  19 #include <sys/utsname.h>
  20
  21 #include <assert.h>
  22 #include <err.h>
  23 #include <errno.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "libman.h"
  29
  30 #ifdef __linux__
  31 extern  char            *strptime(const char *, const char *, struct tm *);
  32 #endif
  33
  34 struct  actions {
  35         int     (*post)(struct man *);
  36 };
  37
  38
  39 static  int       post_TH(struct man *);
  40 static time_t     man_atotime(const char *);
  41
  42 const   struct actions man_actions[MAN_MAX] = {
  43         { NULL }, /* __ */
  44         { post_TH }, /* TH */
  45         { NULL }, /* SH */
  46         { NULL }, /* SS */
  47         { NULL }, /* TP */
  48         { NULL }, /* LP */
  49         { NULL }, /* PP */
  50         { NULL }, /* P */
  51         { NULL }, /* IP */
  52         { NULL }, /* HP */
  53         { NULL }, /* SM */
  54         { NULL }, /* SB */
  55         { NULL }, /* BI */
  56         { NULL }, /* IB */
  57         { NULL }, /* BR */
  58         { NULL }, /* RB */
  59         { NULL }, /* R */
  60         { NULL }, /* B */
  61         { NULL }, /* I */
  62         { NULL }, /* IR */
  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_verr(m, n->line, n->pos, "malloc"));
 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_vwarn(m, n->line, n->pos, "invalid section"))
 124                 return(0);
 125
 126         /* TITLE MSEC ->DATE<- SOURCE VOL */
 127
 128         if (NULL == (n = n->next)) {
 129                 m->meta.date = time(NULL);
 130                 return(1);
 131         }
 132
 133         if (0 == (m->meta.date = man_atotime(n->string))) {
 134                 if ( ! man_vwarn(m, n->line, n->pos, "invalid date"))
 135                         return(0);
 136                 m->meta.date = time(NULL);
 137         }
 138
 139         /* TITLE MSEC DATE ->SOURCE<- VOL */
 140
 141         if ((n = n->next))
 142                 if (NULL == (m->meta.source = strdup(n->string)))
 143                         return(man_verr(m, n->line, n->pos, "malloc"));
 144
 145         /* TITLE MSEC DATE SOURCE ->VOL<- */
 146
 147         if ((n = n->next))
 148                 if (NULL == (m->meta.vol = strdup(n->string)))
 149                         return(man_verr(m, n->line, n->pos, "malloc"));
 150
 151         /*
 152          * The end document shouldn't have the prologue macros as part
 153          * of the syntax tree (they encompass only meta-data).
 154          */
 155
 156         assert(MAN_ROOT == m->last->parent->type);
 157         m->last->parent->child = NULL;
 158         n = m->last;
 159         m->last = m->last->parent;
 160         m->next = MAN_NEXT_CHILD;
 161         assert(m->last == m->first);
 162
 163         man_node_freelist(n);
 164         return(1);
 165 }
 166
 167
 168 static time_t
 169 man_atotime(const char *p)
 170 {
 171         struct tm        tm;
 172         char            *pp;
 173
 174         (void)memset(&tm, 0, sizeof(struct tm));
 175
 176         if ((pp = strptime(p, "%b %d %Y", &tm)) && 0 == *pp)
 177                 return(mktime(&tm));
 178         if ((pp = strptime(p, "%d %b %Y", &tm)) && 0 == *pp)
 179                 return(mktime(&tm));
 180         if ((pp = strptime(p, "%b %d, %Y", &tm)) && 0 == *pp)
 181                 return(mktime(&tm));
 182         if ((pp = strptime(p, "%b %Y", &tm)) && 0 == *pp)
 183                 return(mktime(&tm));
 184
 185         return(0);
 186 }