模块:Fakelink

local func = {}

local function rfind(s, pattern, init)
    local x, y
    local len = #s
    local i = init or len
    x, y = string.find(string.reverse(s), string.reverse(pattern), len-i+1, true)
    if x then
        return len-y+1, len-x+1
    end
end

function func.strrev(frame)
    local text = frame.args[1] or ''
    return string.reverse(text)
end

function func.strreplace(frame)
    local text = frame.args[1] or ''
    local i=2
    local from, to
    while frame.args[i] do
        from = frame.args[i]
        to = frame.args[i+1] or ''
        text = string.gsub(text, from, to)
        i=i+2
    end
    return text
end

function func.nowiki(frame)
    local text = frame.args[1] or ''
    return mw.text.nowiki(text)
end

function func.nowiki2(frame)
    local text = mw.title.new(frame.args[1]):getContent()
    return mw.text.nowiki(text)
end

local function islinkeatable(text)
    local test = string.lower(text)
    return not (string.find(test, 'category:') == 1 or string.find(test, '分类:') == 1 or 
           string.find(test, '分類:') == 1 or string.find(test, 'file:') == 1 or
           string.find(test, '文件:') == 1 or string.find(test, '檔案:') == 1 or
           string.find(test, 'en:') == 1 or string.find(test, 'ja:') == 1)
end

function func.eatlinks(frame)
    local text = frame.args[1] or ''
    text = (string.gsub(text, '%[%[([^\n]-)%]%]', function(x)
        if islinkeatable(x) then
            local target = string.gsub(x, '^(.-)%|.-$', '%1')
            local text = string.gsub(x, '^.-%|(.-)$', '%1')

            if string.find(target, ':') == 1 then
                if text == target then
                    text = string.sub(text, 2)
                end
                return '<span class="fakelinks2">' .. text .. '</span>'
            else
                if (not mw.title.new(target):getContent()) and (not frame.args['nored']) then
                    return '<span class="fakelinks-new">' .. text .. '</span>'
                else
                    return '<span class="fakelinks">' .. text .. '</span>'
                end
            end
        else
            return '[[' .. x .. ']]'
        end
    end))

    text = (string.gsub(text, '%[[^\n]- ([^\n]-)%]', function(x)
        return '<span class="fakelinks2">' .. x .. '</span>'
    end))

    return text
end

function func.eatlinks2(frame)
    local text = frame.args[1] or ''
    local badtarget = frame.args['target'] or 'Special:Logout'
    text = (string.gsub(text, '%[%[([^\n]-)%]%]', function(x)
        if islinkeatable(x) then
            local target = string.gsub(x, '^(.-)%|.-$', '%1')
            local text = string.gsub(x, '^.-%|(.-)$', '%1')

            if string.find(target, ':') == 1 then
                if text == target then
                    text = string.sub(text, 2)
                end
                return '[[' .. badtarget .. '|<span class="fakelinks2">' .. text .. '</span>]]'
            else
                if (not mw.title.new(target):getContent()) and (not frame.args['nored']) then
                    return '[[' .. badtarget .. '|<span class="fakelinks-new">' .. text .. '</span>]]'
                else
                    return '[[' .. badtarget .. '|<span class="fakelinks">' .. text .. '</span>]]'
                end
            end
        else
            return '[[' .. x .. ']]'
        end
    end))

    text = (string.gsub(text, '%[//[^\n]- ([^\n]-)%]', function(x)
        return '[[' .. badtarget .. '|<span class="fakelinks2">' .. x .. '</span>]]'
    end))

    return text
end

return func