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util.datetime: Added implementation for function parse().

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This commit is contained in:
Waqas Hussain 2010-08-02 20:11:08 +05:00
parent 76be1093aa
commit d6cf6f6004
1 changed files with 20 additions and 1 deletions
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21
util/datetime.lua
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@ -10,7 +10,10 @@
-- XEP-0082: XMPP Date and Time Profiles
local os_date = os.date;
local os_time = os.time;
local os_difftime = os.difftime;
local error = error;
local tonumber = tonumber;
module "datetime"
@ -31,7 +34,23 @@ function legacy(t)
end
function parse(s)
error("datetime.parse: Not implemented"); -- TODO
if s then
local year, month, day, hour, min, sec, tzd;
year, month, day, hour, min, sec, tzd = s:match("^(%d%d%d%d)-?(%d%d)-?(%d%d)T(%d%d):(%d%d):(%d%d)%.?%d*([Z+%-].*)$");
if year then
local time_offset = os_difftime(os_time(os_date("*t")), os_time(os_date("!*t"))); -- to deal with local timezone
local tzd_offset = 0;
if tzd ~= "" and tzd ~= "Z" then
local sign, h, m = tzd:match("([+%-])(%d%d):(%d%d)");
if not sign then return; end
h, m = tonumber(h), tonumber(m);
tzd_offset = h * 60 * 60 + m * 60;
if sign == "-" then tzd_offset = -tzd_offset; end
end
sec = sec + time_offset + tzd_offset;
return os_time({year=year, month=month, day=day, hour=hour, min=min, sec=sec});
end
end
end
return _M;