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.travis.yml: debian doesn't support luajit and busted doesn't support 5.2..... damn
[etc/awesome.git] / src / tzcache.lua
1 local read_tzfile = require "luatz.tzfile".read_tzfile
2
3 local tz_cache = { }
4
5 local function name_to_zoneinfo_path ( name )
6         if name then
7                 return "/usr/share/zoneinfo/" .. name
8         else
9                 return "/etc/localtime"
10         end
11 end
12
13 local function clear_tz_cache ( name )
14         tz_cache [ name_to_zoneinfo_path ( name ) ] = nil
15 end
16
17 local function get_tz ( name )
18         local path = name_to_zoneinfo_path ( name )
19         -- TODO: stat path
20         local tzinfo = tz_cache [ path ]
21         if tzinfo == nil then
22                 tzinfo = read_tzfile ( path )
23                 tz_cache [ path ] = tzinfo
24         end
25         return tzinfo
26 end
27
28 return {
29         get_tz = get_tz ;
30         clear_tz_cache = clear_tz_cache ;
31 }