man_action.c

   1 /*      $Id: man_action.c,v 1.20 2009/10/24 05:45:04 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 struct  actions {
  27         int     (*post)(struct man *);
  28 };
  29
  30 static  int       post_TH(struct man *);
  31 static  int       post_fi(struct man *);
  32 static  int       post_nf(struct man *);
  33
  34 const   struct actions man_actions[MAN_MAX] = {
  35         { NULL }, /* br */
  36         { post_TH }, /* TH */
  37         { NULL }, /* SH */
  38         { NULL }, /* SS */
  39         { NULL }, /* TP */
  40         { NULL }, /* LP */
  41         { NULL }, /* PP */
  42         { NULL }, /* P */
  43         { NULL }, /* IP */
  44         { NULL }, /* HP */
  45         { NULL }, /* SM */
  46         { NULL }, /* SB */
  47         { NULL }, /* BI */
  48         { NULL }, /* IB */
  49         { NULL }, /* BR */
  50         { NULL }, /* RB */
  51         { NULL }, /* R */
  52         { NULL }, /* B */
  53         { NULL }, /* I */
  54         { NULL }, /* IR */
  55         { NULL }, /* RI */
  56         { NULL }, /* na */
  57         { NULL }, /* i */
  58         { NULL }, /* sp */
  59         { post_nf }, /* nf */
  60         { post_fi }, /* fi */
  61         { NULL }, /* r */
  62         { NULL }, /* RE */
  63         { NULL }, /* RS */
  64         { NULL }, /* DT */
  65         { NULL }, /* UC */
  66         { NULL }, /* PD */
  67 };
  68
  69 static  time_t    man_atotime(const char *);
  70 #ifdef __linux__
  71 extern  char     *strptime(const char *, const char *, struct tm *);
  72 #endif
  73
  74
  75 int
  76 man_action_post(struct man *m)
  77 {
  78
  79         if (MAN_ACTED & m->last->flags)
  80                 return(1);
  81         m->last->flags |= MAN_ACTED;
  82
  83         switch (m->last->type) {
  84         case (MAN_TEXT):
  85                 /* FALLTHROUGH */
  86         case (MAN_ROOT):
  87                 return(1);
  88         default:
  89                 break;
  90         }
  91
  92         if (NULL == man_actions[m->last->tok].post)
  93                 return(1);
  94         return((*man_actions[m->last->tok].post)(m));
  95 }
  96
  97
  98 static int
  99 post_fi(struct man *m)
 100 {
 101
 102         if ( ! (MAN_LITERAL & m->flags))
 103                 if ( ! man_nwarn(m, m->last, WNLITERAL))
 104                         return(0);
 105         m->flags &= ~MAN_LITERAL;
 106         return(1);
 107 }
 108
 109
 110 static int
 111 post_nf(struct man *m)
 112 {
 113
 114         if (MAN_LITERAL & m->flags)
 115                 if ( ! man_nwarn(m, m->last, WOLITERAL))
 116                         return(0);
 117         m->flags |= MAN_LITERAL;
 118         return(1);
 119 }
 120
 121
 122 static int
 123 post_TH(struct man *m)
 124 {
 125         struct man_node *n;
 126         char            *ep;
 127         long             lval;
 128
 129         if (m->meta.title)
 130                 free(m->meta.title);
 131         if (m->meta.vol)
 132                 free(m->meta.vol);
 133         if (m->meta.source)
 134                 free(m->meta.source);
 135
 136         m->meta.title = m->meta.vol = m->meta.source = NULL;
 137         m->meta.msec = 0;
 138         m->meta.date = 0;
 139
 140         /* ->TITLE<- MSEC DATE SOURCE VOL */
 141
 142         n = m->last->child;
 143         assert(n);
 144
 145         if (NULL == (m->meta.title = strdup(n->string)))
 146                 return(man_nerr(m, n, WNMEM));
 147
 148         /* TITLE ->MSEC<- DATE SOURCE VOL */
 149
 150         n = n->next;
 151         assert(n);
 152
 153         errno = 0;
 154         lval = strtol(n->string, &ep, 10);
 155         if (n->string[0] != '\0' && *ep == '\0')
 156                 m->meta.msec = (int)lval;
 157         else if ( ! man_nwarn(m, n, WMSEC))
 158                 return(0);
 159
 160         /* TITLE MSEC ->DATE<- SOURCE VOL */
 161
 162         if (NULL == (n = n->next))
 163                 m->meta.date = time(NULL);
 164         else if (0 == (m->meta.date = man_atotime(n->string))) {
 165                 if ( ! man_nwarn(m, n, WDATE))
 166                         return(0);
 167                 m->meta.date = time(NULL);
 168         }
 169
 170         /* TITLE MSEC DATE ->SOURCE<- VOL */
 171
 172         if (n && (n = n->next))
 173                 if (NULL == (m->meta.source = strdup(n->string)))
 174                         return(man_nerr(m, n, WNMEM));
 175
 176         /* TITLE MSEC DATE SOURCE ->VOL<- */
 177
 178         if (n && (n = n->next))
 179                 if (NULL == (m->meta.vol = strdup(n->string)))
 180                         return(man_nerr(m, n, WNMEM));
 181
 182         /*
 183          * The end document shouldn't have the prologue macros as part
 184          * of the syntax tree (they encompass only meta-data).
 185          */
 186
 187         if (m->last->parent->child == m->last) {
 188                 m->last->parent->child = NULL;
 189                 n = m->last;
 190                 m->last = m->last->parent;
 191                 m->next = MAN_NEXT_CHILD;
 192         } else {
 193                 assert(m->last->prev);
 194                 m->last->prev->next = NULL;
 195                 n = m->last;
 196                 m->last = m->last->prev;
 197                 m->next = MAN_NEXT_SIBLING;
 198         }
 199
 200         man_node_freelist(n);
 201         return(1);
 202 }
 203
 204
 205 static time_t
 206 man_atotime(const char *p)
 207 {
 208         struct tm        tm;
 209         char            *pp;
 210
 211         bzero(&tm, sizeof(struct tm));
 212
 213         if ((pp = strptime(p, "%b %d %Y", &tm)) && 0 == *pp)
 214                 return(mktime(&tm));
 215         if ((pp = strptime(p, "%d %b %Y", &tm)) && 0 == *pp)
 216                 return(mktime(&tm));
 217         if ((pp = strptime(p, "%b %d, %Y", &tm)) && 0 == *pp)
 218                 return(mktime(&tm));
 219         if ((pp = strptime(p, "%b %Y", &tm)) && 0 == *pp)
 220                 return(mktime(&tm));
 221
 222         return(0);
 223 }