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view framework/env/format/date.lua @ 2:72860d232f32

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Version 1.0.2

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author jbe/bsw
date Thu Dec 10 12:00:00 2009 +0100 (2009-12-10)
parents 9fdfb27f8e67
children
line source
1 --[[--
2 text = -- text with the value formatted as a date, according to the locale settings
3 format.date(
4 value, -- a date, a timestamp or nil
5 {
6 nil_as = nil_text -- text to be returned for a nil value
7 }
8 )
9
10 Formats a date or timestamp as a date, according to the locale settings.
11
12 --]]--
13
14 function format.date(value, options)
15 local options = options or {}
16 if value == nil then
17 return options.nil_as or ""
18 end
19 if not (
20 atom.has_type(value, atom.date) or
21 atom.has_type(value, atom.timestamp)
22 ) then
23 error("Value passed to format.date(...) is neither a date, a timestamp, nor nil.")
24 end
25 if value.invalid then
26 return "invalid"
27 end
28 local result = locale.get("date_format") or "YYYY-MM-DD"
29 result = string.gsub(result, "YYYY", function()
30 return format.decimal(value.year, { digits = 4 })
31 end)
32 result = string.gsub(result, "YY", function()
33 return format.decimal(value.year % 100, { digits = 2 })
34 end)
35 result = string.gsub(result, "Y", function()
36 return format.decimal(value.year)
37 end)
38 result = string.gsub(result, "MM", function()
39 return format.decimal(value.month, { digits = 2 })
40 end)
41 result = string.gsub(result, "M", function()
42 return format.decimal(value.month)
43 end)
44 result = string.gsub(result, "DD", function()
45 return format.decimal(value.day, { digits = 2 })
46 end)
47 result = string.gsub(result, "D", function()
48 return format.decimal(value.day)
49 end)
50 return result
51 end

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