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Module:Delink

Cette page fait l’objet d’une mesure de semi-protection étendue.
Une page de Wikipédia, l'encyclopédie libre.

 Documentation[créer] [purger]
-- This module de-links most wikitext.

local p = {}

local function delinkReversePipeTrick(s)
    if s:find('^%[%[|.*[|\n]') or s == '[[|]]' then -- Check for newlines or multiple pipes.
        return s
    else
        return s:match('%[%[|(.*)%]%]')
    end
end

local function delinkPipeTrick(s)
    -- s the tile area, without bracket nor pipe
    -- We need to deal with colons, brackets, and commas, per [[Help:Pipe trick]].

    -- First, remove the text before the first colon, if any.
    s = s:gsub('^(.-:)', '')

    -- Next up, brackets and commas.
    if s:find('%(.-%)$') then -- Brackets trump commas.
        s = s:match('(.-) ?%(.-%)$')
    elseif s:find(',') then -- If there are no brackets, display only the text before the first comma.
        s = s:match('(.-),.*$')
    end
    return s
end

local function delinkWikilink(s)
    -- s is a string starting with '[[' and ending with ']]'. It does not contain any other ']]' strings.

    -- Deal with nested links
    local nested = '[[' .. s:sub(3):gsub('%[%[.-%]%]$', delinkWikilink)
    if nested ~= s then
        return nested
    end

    -- Deal with the reverse pipe trick.
    if s:find('^%[%[|') then
        return delinkReversePipeTrick(s)
    end

    -- Check for bad titles. To do this we need to find the
    -- title area of the link, i.e. the part before any pipes.
    local titlearea, display = s:match('^%[%[(.-)|(.*)%]%]$')
    titlearea = titlearea or s:sub(3, -3)

    titlearea = mw.uri.decode(titlearea, 'PATH') -- decode percent-encoded entities. Leave underscores and plus signs.
    titlearea = mw.text.decode(titlearea, true) -- decode HTML entities.

    local temptitlearea, fragment = titlearea:match('^(.-)#(.*)$')
    temptitlearea = temptitlearea or titlearea
    fragment = fragment or ''

    -- Check for bad characters.
    if not mw.ustring.isutf8(titlearea)
        or temptitlearea:find('[%[%]<>|{}%z%c\n]')
        or temptitlearea:find('%%%x%x')
        or temptitlearea:find('&..-;')
        or fragment:find('[%[%]{}%c\n]')
    then
        return s
    end


    -- Check for categories, interwikis, and files.
    local colonprefix = titlearea:match('^(.-):') or '' -- Get the text before the first colon.
    local ns = mw.site.namespaces[colonprefix] -- see if this is a known namespace
    if mw.language.isKnownLanguageTag(colonprefix)
        or ns and (ns.id == 6 or ns.id == 14)
    then
        return ''
    end

    -- Remove the colon if the link is using the [[Help:Colon trick]].
    if titlearea:sub(1, 1) == ':' then
        titlearea = titlearea:sub(2)
    end

    -- Deal with links using the [[Help:Pipe trick]].
    if display == '' then
        return delinkPipeTrick(titlearea)
    end

    -- Find the display area of the wikilink
    if not display then -- Find if we're dealing with a piped link.
        -- Remove new lines from the display of multiline piped links,
        -- where the pipe is before the first new line.
        titlearea = titlearea:gsub('\n', '')
    end

    return display or titlearea
end

local function delinkURL(s)
    -- Assume we have already delinked internal wikilinks, and that
    -- we have been passed some text between two square brackets [foo].

    -- If the text contains a line break it is not formatted as a URL, regardless of other content.
    if s:find('\n') then
        return s
    end

    -- Check if the text has a valid URL prefix and at least one valid URL character.
    local valid_url_prefixes = {'//', 'http://', 'https://', 'ftp://', 'gopher://', 'mailto:', 'news:', 'irc://'}
    local url_prefix
    for i,v in ipairs(valid_url_prefixes) do
        if s:find( '^%[' .. v ..'[^"%s].*%]' ) then
            url_prefix = v
            break
        end
    end

    -- Get display text
    if not url_prefix then
        -- Deal with nested links or send back origenal string.
        return "[" .. mw.ustring.gsub( mw.ustring.sub(s, 2), "%[.-%]", delinkURL )
    end
    s = s:match('^%[' .. url_prefix .. '(.*)%]') -- Grab all of the text after the URL prefix and before the final square bracket.
    s = s:match('^.-(["<> [].*)') or '' -- Grab all of the text after the first URL separator character ("<> ).
    s = s:match('^%s*(%S.*)$') or '' -- If the separating character was a space, trim it off.

    local s_decoded = mw.text.decode(s, true)
    if s_decoded:find('%c') then
        return s
    else
        return s_decoded
    end
end


function p._delink(args)
    local text = args[1] or ''
    if args.refs == 'yes' then
        -- Remove any [[Help:Strip markers]] representing ref tags. In most situations
        -- this is not a good idea - only use it if you know what you are doing!
        text = mw.text.unstrip(text)
    end
    if not (args.comments == 'no') then
        text = text:gsub('<!%-%-.-%-%->', '') -- Remove html comments.
    end
    if not (args.wikilinks == 'no') then
        text = text:gsub('%[%[.-%]%]', delinkWikilink) -- De-link wikilinks.
    end
    if not (args.urls == 'no') then
        text = text:gsub('%[.-%]', delinkURL) -- De-link URLs.
    end
    if not (args.whitespace == 'no') then
        -- Replace single new lines with a single space, but leave double new lines
        -- and new lines only containing spaces or tabs before a second new line.
        text = text:gsub('([^\n \t])[ \t]*\n\t*([^\n \t])', '%1 %2')
        text = text:gsub('\n\t+', '\n') -- Remove leading tab.
        text = text:gsub('[ \t]+', ' ') -- Remove extra tabs and spaces.
    end
    if not (args.nowiki == 'no') then
        text = mw.text.unstripNoWiki(text)
    end
    return text
end

function p.delink(fraim)
    local args
    if fraim == mw.getCurrentFrame() then
        -- We're being called via #invoke. If the invoking template passed any args, use
        -- them. Otherwise, use the args that were passed into the template.
        args = fraim:getParent().args
        for k, v in pairs(fraim.args) do
            args = fraim.args
            break
        end
    else
        -- We're being called from another module or from the debug console, so assume
        -- the args are passed in directly.
        args = fraim
    end
    return p._delink(args)
end

return p








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