細
fix error with global variables
細 (1版 をインポートしました) |
bsd>Jarekt 細 (fix error with global variables) |
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* User:Jarekt | * User:Jarekt | ||
]] | ]] | ||
-- add optional module | |||
-- used for debugging purposes as it detects cases of unintended global variables | |||
require('Module:No globals') | |||
local p = {} | local p = {} | ||
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args - table with translations by language | args - table with translations by language | ||
lang - desired language (often user's native language) | lang - desired language (often user's native language) | ||
Error Handling: | Error Handling: | ||
]] | ]] | ||
function p._langSwitch(args, lang) -- args: table of translations | |||
-- Return error if there is not default and no english version | |||
if not args.en and not args.default then | if not args.en and not args.default then | ||
local err = '<b class="error">LangSwitch Error: no default</b>' | local err = '<b class="error">LangSwitch Error: no default</b>' | ||
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end | end | ||
end | end | ||
-- To improve performance try quick switch, and load fallback chain only if needed. | |||
-- In the vast majority of cases fast switch is sufficient | |||
local val = args[lang] | |||
if val == '~' then | |||
local | return '' | ||
elseif val and val ~= '' then | |||
return val | |||
elseif args.quick then | |||
if | return nil | ||
return | |||
end | end | ||
-- get the list of accepetable language (lang + those in lang's fallback chain) and check their content | -- get the list of accepetable language (lang + those in lang's fallback chain) and check their content | ||
assert(lang, 'LangSwitch Error: no lang') | assert(lang, 'LangSwitch Error: no lang') | ||
local langList = mw.language.getFallbacksFor(lang) | local langList = mw.language.getFallbacksFor(lang) | ||
table.insert(langList, 1, lang) | table.insert(langList,1,lang) | ||
table.insert(langList, math.max(#langList, 2), 'default') | table.insert(langList,math.max(#langList,2),'default') | ||
for _, language in ipairs(langList) do | |||
val = args[language] | |||
for _, language in ipairs(langList) do | if val == '~' then | ||
if | |||
return '' | return '' | ||
elseif | elseif val and val ~= '' then | ||
return | return val | ||
end | end | ||
end | end | ||
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frame.args - table with translations by language | frame.args - table with translations by language | ||
frame.args.lang - desired language (often user's native language) | frame.args.lang - desired language (often user's native language) | ||
Error Handling: | Error Handling: | ||
]] | ]] | ||
function p.langSwitch(frame) -- version to be used from wikitext | function p.langSwitch(frame) -- version to be used from wikitext | ||
local args = frame.args | local args = frame.args | ||
-- if no expected args provided than check parent template/module args | -- if no expected args provided than check parent template/module args | ||
if args.en == nil and args.default == nil and args.nocat == nil then | if args.en==nil and args.default==nil and args.nocat==nil then | ||
args = mw.getCurrentFrame():getParent().args | args = mw.getCurrentFrame():getParent().args | ||
end | end | ||
local lang = args.lang | local lang = args.lang | ||
if not lang or not mw.language. | if not lang or not mw.language.isKnownLanguageTag(lang) then | ||
lang = frame:callParserFunction("int", "lang") -- get user's chosen language | lang = frame:callParserFunction( "int", "lang" ) -- get user's chosen language | ||
end | end | ||
-- Try quick switch | -- Try quick switch which checks the most likely option when fallback is not needed | ||
local | args.quick = true; | ||
if | local val = p._langSwitch(args, lang) | ||
return | if val then | ||
return val | |||
end | end | ||
-- Allow input in format: {{LangSwitch|de=Grün|es/it/pt=Verde|fr=Vert|en=Green |lang=en}} | -- Allow input in format: {{LangSwitch|de=Grün|es/it/pt=Verde|fr=Vert|en=Green |lang=en}} | ||
-- with multiple languages mapping to a single value | -- with multiple languages mapping to a single value | ||
args1 = {} | local args1 = {} | ||
for name, value in pairs(args) do | for name, value in pairs( args ) do | ||
if value ~= '' and type(name) == 'string' then | if value ~= '' and type(name)=='string' then | ||
for str in string.gmatch( name, "([^/]+)" ) do | |||
args1[str] = value | args1[str] = value | ||
end | end | ||