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util/datetime.lua @ 12643:9fa749cbd376
teal-src: update module.d.tl with new access control methods
author | Matthew Wild <mwild1@gmail.com> |
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date | Wed, 15 Jun 2022 14:22:26 +0100 |
parent | 12633:5d8b0e0b9d48 |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 Waqas Hussain |
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4 -- |
758 | 5 -- This project is MIT/X11 licensed. Please see the |
6 -- COPYING file in the source package for more information. | |
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7 -- |
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8 |
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9 |
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10 -- XEP-0082: XMPP Date and Time Profiles |
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11 |
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12 local os_date = os.date; |
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13 local os_time = os.time; |
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14 local os_difftime = os.difftime; |
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15 local floor = math.floor; |
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16 local tonumber = tonumber; |
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17 |
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18 local _ENV = nil; |
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19 -- luacheck: std none |
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20 |
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21 local function date(t) |
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22 return os_date("!%Y-%m-%d", t and floor(t) or nil); |
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23 end |
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24 |
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25 local function datetime(t) |
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26 if t == nil or t % 1 == 0 then |
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27 return os_date("!%Y-%m-%dT%H:%M:%SZ", t); |
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28 end |
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29 local m = t % 1; |
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30 local s = floor(t); |
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31 return os_date("!%Y-%m-%dT%H:%M:%S.%%06dZ", s):format(floor(m * 1000000)); |
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32 end |
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33 |
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34 local function time(t) |
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35 if t == nil or t % 1 == 0 then |
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36 return os_date("!%H:%M:%S", t); |
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37 end |
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38 local m = t % 1; |
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39 local s = floor(t); |
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40 return os_date("!%H:%M:%S.%%06d", s):format(floor(m * 1000000)); |
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41 end |
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42 |
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43 local function legacy(t) |
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44 return os_date("!%Y%m%dT%H:%M:%S", t and floor(t) or nil); |
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45 end |
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46 |
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47 local function parse(s) |
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48 if s then |
12633 | 49 local 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+%-]?.*)$"); |
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50 if year then |
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51 local now = os_time(); |
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52 local time_offset = os_difftime(os_time(os_date("*t", now)), os_time(os_date("!*t", now))); -- to deal with local timezone |
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53 local tzd_offset = 0; |
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54 if tzd ~= "" and tzd ~= "Z" then |
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55 local sign, h, m = tzd:match("([+%-])(%d%d):?(%d*)"); |
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56 if not sign then return; end |
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57 if #m ~= 2 then m = "0"; end |
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58 h, m = tonumber(h), tonumber(m); |
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59 tzd_offset = h * 60 * 60 + m * 60; |
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60 if sign == "-" then tzd_offset = -tzd_offset; end |
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61 end |
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62 local prec = sec%1; |
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63 sec = floor(sec + time_offset) - tzd_offset; |
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64 return os_time({year=year, month=month, day=day, hour=hour, min=min, sec=sec, isdst=false})+prec; |
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65 end |
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66 end |
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67 end |
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68 |
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69 return { |
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70 date = date; |
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71 datetime = datetime; |
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72 time = time; |
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73 legacy = legacy; |
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74 parse = parse; |
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75 }; |