Template:Fallback: Difference between revisions
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{{#ifexist: Template:{{{1|}}}/{{#if: {{{2|}}} |{{{2}}}|{{int:Lang}}}} |{{#if: {{{2|}}} |{{{2}}}|{{int:Lang}}}}|{{CONTENTLANGUAGE}}}}<noinclude> |
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local p = {} |
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{{documentation}} |
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local langlist = require('Module:Fallbacklist') |
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</noinclude> |
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function p.fblist(lang) -- list the full fallback chain from a language to en |
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local fbtable = p.fallbackloop{ lang:lower() } |
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table.insert(fbtable, 'default') |
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table.insert(fbtable, 'en') |
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return fbtable |
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end |
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function _inArray(x, t) |
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for i, v in ipairs(t) do |
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if v == x then return i end |
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end |
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return -1 |
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end |
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function p.fallbackloop(fbtable) --list of fallback languages in string format (more convenient than tables) |
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local changes = false |
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for i, j in ipairs(fbtable) do |
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local seq = langlist[j] |
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if seq then |
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for k, l in ipairs(seq) do |
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if _inArray(l, fbtable) == -1 then |
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table.insert(fbtable, l) |
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changes = true |
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end |
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end |
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end |
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end |
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if changes then |
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return p.fallbackloop(fbtable) |
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end |
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return fbtable |
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end |
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function p._langSwitch(args, lang) -- args: table of translations |
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-- Return error if there is not default and no english version |
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if not args.en and not args.default and args.nocat ~= '1' then |
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return '<strong class="error">LangSwitch Error: no default</strong>[[Category:LangSwitch template without default version]]' |
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end |
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-- get language (either stated one or user's default language) |
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if not lang then |
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return '<strong class="error">LangSwitch Error: no lang</strong>' -- must become proper error |
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end |
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-- get the list of accpetable language (lang + those in lang's fallback chain) and check their content |
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local parselist = p.fblist(lang) |
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for i, k in ipairs(parselist) do |
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if args[k] == '~' then return '' end |
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if args[k] and args[k] ~= '' then return args[k] end |
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end |
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end |
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function p.langSwitch(frame) -- version to be used from wikitext |
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args = frame.args |
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-- if no expected args provided than check parent template/module args |
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if args.en==nil and args.default==nil and args.nocat==nil then |
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args = mw.getCurrentFrame():getParent().args |
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end |
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if args.lang and args.lang ~= '' then |
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lang = args.lang |
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args.lang = nil |
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else -- get user's chosen language |
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lang = frame:preprocess( "{{int:lang}}" ) |
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end |
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return p._langSwitch(args, lang) |
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end |
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function p.fallbackpage(base, lang, formatting) |
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local languages = p.fblist(lang) |
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for i, lng in ipairs(languages) do |
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if mw.title.new(base .. '/' .. lng).exists then |
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if formatting == 'table' then |
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return {base .. '/' .. lng, lng} -- returns name of the page + name of the language |
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else |
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return base .. '/' .. lng -- returns only the page |
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end |
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end |
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end |
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end |
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function p.autotranslate(frame) -- logic for template:Autotranslate |
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local args = frame.args |
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local maintext = '' |
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local errormessage = '' |
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if not args.lang or args.lang == '' then |
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args.lang = frame:preprocess( "{{int:lang}}" ) |
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end |
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local page = p.fallbackpage('Template:' .. args.base, args.lang) |
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if not page then |
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page = p.fallbackpage(args.base, args.lang) |
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end |
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if not page then |
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return '<strong class="error">no fallback page found for autotranslate</strong>' |
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end |
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newargs = {} |
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for i, j in pairs(args) do |
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if type(i) == 'number' then |
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table.insert(newargs, j) |
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elseif i ~= 'base' and i ~= 'lang' then |
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errormessage = errormessage .. '[[Category:Pages with incorrect template usage/Autotranslate]]' |
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end |
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end |
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local maintext = frame:expandTemplate{ title = page, args = newargs } |
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return maintext .. errormessage |
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end |
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function p.translatelua(frame) |
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local lang = frame.args.lang |
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local page = require('Module:' .. mw.text.trim(frame.args[1])) -- page should only contain a simple of translations |
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if not lang or mw.text.trim(lang) == '' then |
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lang = frame:preprocess( "{{int:lang}}" ) |
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end |
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if frame.args[2] then |
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page = page[mw.text.trim(frame.args[2])] |
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end |
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return p._langSwitch(page, lang) |
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end |
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function p.runTests() |
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local toFallbackTest = require('Module:Fallback/tests/fallbacks') |
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local result = true |
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mw.log('Testing fallback chains') |
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for i, t in ipairs(toFallbackTest) do |
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local fbtbl = table.concat(p.fblist(t.initial), ', ') |
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local expected = table.concat(t.expected, ', ') |
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local ret = (fbtbl == expected) |
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mw.log(i, ret and 'passed' or 'FAILED', t.initial, (not ret) and ('FAILED\nis >>' .. fbtbl .. '<<\nbut should be >>' .. expected .. '<<\n') or '') |
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result = result and ret |
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end |
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return result |
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end |
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function p.showTemplateArguments(frame) |
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-- list all input arguments of the template that calls "{{#invoke:Fallback|showTemplateArguments}}" |
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local str = '' |
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for name, value in pairs( mw.getCurrentFrame():getParent().args ) do |
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if str=='' then |
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str = string.format('%s=%s', name, value) -- argument #1 |
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else |
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str = string.format('%s, %s=%s', str, name, value) -- the rest |
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end |
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end |
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return str |
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end |
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return p |
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Latest revision as of 23:55, 18 June 2023
en
This template was imported from commons:Template:Fallback without the here unusable documentation.
Use localised subpage for the user language with fallback to {{CONTENTLANGUAGE}}
| Parameter | Description | Type | Status | |
|---|---|---|---|---|
| page | 1 | Template name | Page name | required |
| lang | 2 | override user language on localised page
| String | optional |