granicus.if.org Git - postgresql/blob - src/timezone/pgtz.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * pgtz.c
   4  *        Timezone Library Integration Functions
   5  *
   6  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
   7  *
   8  * IDENTIFICATION
   9  *        $PostgreSQL: pgsql/src/timezone/pgtz.c,v 1.6 2004/05/01 22:07:03 momjian Exp $
  10  *
  11  *-------------------------------------------------------------------------
  12  */
  13
  14 #include "pgtz.h"
  15 #include "tzfile.h"
  16
  17
  18 static char tzdir[MAXPGPATH];
  19 static int      done_tzdir = 0;
  20 char *
  21 pg_TZDIR(void)
  22 {
  23         char       *p;
  24
  25         if (done_tzdir)
  26                 return tzdir;
  27
  28 #ifndef WIN32
  29         StrNCpy(tzdir, PGDATADIR, MAXPGPATH);
  30 #else
  31         if (GetModuleFileName(NULL, tzdir, MAXPGPATH) == 0)
  32                 return NULL;
  33 #endif
  34
  35         canonicalize_path(tzdir);
  36 #ifdef WIN32
  37         /* trim off binary name, then go up a directory */
  38         if ((p = last_path_separator(tzdir)) == NULL)
  39                 return NULL;
  40         else
  41                 *p = '\0';
  42         strcat(tzdir, "/../share/timezone");
  43 #endif
  44         strcat(tzdir, "/timezone");
  45
  46
  47         done_tzdir = 1;
  48         return tzdir;
  49 }