Module:Sandbox/isaacl/ExpandPageAbbreviation

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-- For unit tests, see [[Module:Sandbox/isaacl/ExpandPageAbbreviation/tests]]

local moduleSelf = { 
    mw = require("Module:Mw"),
    outputForAbbr = { },
    }

-- if mw.loadData() not supported, use require() instead
if moduleSelf.mw.loadData then
    moduleSelf.phraseForAbbr = moduleSelf.mw.loadData('Module:Sandbox/isaacl/ExpandPageAbbreviation/data')
else
    moduleSelf.phraseForAbbr = require('Module:Sandbox/isaacl/ExpandPageAbbreviation/data')
end

function moduleSelf._expand(abbr)
    if moduleSelf.outputForAbbr[abbr] ~= nil then
        return moduleSelf.outputForAbbr[abbr]
    else
        if moduleSelf.phraseForAbbr[abbr] == nil then
            moduleSelf.outputForAbbr[abbr] = string.format("[[%s]]", abbr)
        else
            moduleSelf.outputForAbbr[abbr] = string.format("[[%s|%s]] (%s)",
                abbr, moduleSelf.phraseForAbbr[abbr], abbr)
        end
        return moduleSelf.outputForAbbr[abbr]
    end
end  -- function _expand()

function moduleSelf.expand(frame)
    local abbr = frame.args[1]
    return moduleSelf._expand(abbr)
end

return moduleSelf