Module:Date formatting/ja

このモジュールは、{{Date formatting}} を実装しています。

---

local p = {}

local p0 = '((%d+)年(%d+)月(%d+)日)'
local p1 = '((%d%d%d%d)(%d%d)(%d%d))'
local p2 = '((%d+)/(%d+)/(%d+))'
local p3 = '((%a+)%.? (%d+)%a*,? (%d+))'
local p4 = '((%d+)%a* (%a+)%.?,? (%d+))'

local months = {
	January = 1, February = 2, March = 3, April = 4, May = 5, June = 6, July = 7, August = 8, September = 9, October = 10, November = 11, December = 12,
	Jan = 1, Feb = 2, Mar = 3, Apr = 4, May = 5, Jun = 6, Jul = 7, Aug = 8, Sep = 9, Oct = 10, Nov = 11, Dec = 12
}
local monthsName = { 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December' }
local monthsNameShort = { 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec' }

function p.formatDate( str, mode )
	if str:match( p0 ) ~= nil then
		_, y, m, d = str:match( p0 )
--	elseif str:match( p1 ) ~= nil then
--		_, y, m, d = str:match( p1 )
	elseif str:match( p2 ) ~= nil then
		_, y, m, d = str:match( p2 )
	elseif str:match( p3 ) ~= nil then
		_, m, d, y = str:match( p3 )
		m = months[ m ]
	elseif str:match( p4 ) ~= nil then
		_, d, m, y = str:match( p4 )
		m = months[ m ]
	end
	
	if mode == 'en' then
		return string.format( '%s %d, %d', monthsName[ tonumber(m) ], tonumber(d), tonumber(y) )
	elseif mode == 'short_en' then
		return string.format( '%s. %d, %d', monthsNameShort[ tonumber(m) ], tonumber(d), tonumber(y) )
	else
		return string.format( '%d年%d月%d日', tonumber(y), tonumber(m), tonumber(d) )
	end
end

function p.format( str, mode )
	for s in str:gmatch( p0 ) do
		str = str:gsub( s, p.formatDate( s, mode ) )
	end
--	for s in str:gmatch( p1 ) do
--		str = str:gsub( s, p.formatDate( s, mode ) )
--	end
	for s in str:gmatch( p2 ) do
		str = str:gsub( s, p.formatDate( s, mode ) )
	end
	for s in str:gmatch( p3 ) do
		str = str:gsub( s, p.formatDate( s, mode ) )
	end
	for s in str:gmatch( p4 ) do
		str = str:gsub( s, p.formatDate( s, mode ) )
	end

	return str
end

function p.base( f )
	local args = f
	if f == mw.getCurrentFrame() then
		args = require( 'Dev:ProcessArgs' ).merge( true )
	end
	
	local mode = nil
	if args.en ~= nil then
		mode = 'en'
	elseif args.short_en ~= nil then
		mode ='short_en'
	end
	
	return p.format( args[1], mode )
end

return p