View source for Module:Citation/CS1

--require "mw.text"

local p = {}

-- This can be removed when mw.text.tag appears.
function tag(frame, t)
    local name = t.name or "!--"
    local content = t.contents or ""
    local params = ""
    for n,v in pairs(t.params) do
        params = params .. "|" .. n .. "=" .. v
    end
    return frame:preprocess("{{#tag:" .. name .. "|" .. content .. params .. "}}")
end

function doi(frame, i)
    return frame:preprocess("{{doi|" .. i .. "}}")
end

function authorprefix(Surname, Given, Authorlink, ampersand)
    if (Surname == nil) then return "" end
    local prefix = ampersand .. Surname
    if (Given ~= nil) then prefix = prefix .. ", " .. Given end
    if (Authorlink ~= nil) then prefix = "[[" .. Authorlink .. "|" .. prefix .. "]]" end
    return prefix 
end

function anchorid(args)
    local P1 = args[1] or ""
    local P2 = args[2] or ""
    local P3 = args[3] or ""
    local P4 = args[4] or ""
    local P5 = args[5] or ""
    return "CITEREF" .. P1 .. P2 .. P3 .. P4 .. P5
end

function name(args)
    local P1 = args[1] or ""
    if ( args[5] ~= nil) then
        return P1 .. " et al."
    else
        local P2 = args[2] or ""
        local P3 = args[3] or "" 
        local P4 = args[4] or ""
        if ( args[4] ~= nil ) then
            P4 = " " .. P4
            P3 = " & " .. P3
            P2 = " & " .. P2
        elseif ( args[3] ~= nil ) then
            P3 = " " .. P3
            P2 = " & " .. P2
        elseif ( args[2] ~= nil ) then
            P2 = " " .. P2            
        end
        return P1 .. P2 .. P3 .. P4
    end 
end

function crossref(frame, args)
    local config = frame.args
    local LB = config.BracketLeft or ""
    local RB = config.BracketRight or ""
    local anchor = args.ref or args.Ref or anchorid(args)
    local text = name(args)
    local loc = args.loc or ""
    local page = args.p or args.page
    local pages = args.pp or args.pages
    if ( page ~= nil ) then
        local pagesep = config.PageSep or ", p. "
        loc = loc .. pagesep .. page
    end
    if ( pages ~= nil ) then
        local pagessep = config.PagesSep or ", pp. "
        loc = loc .. pagessep .. pages
    end        
    local ps = args.Postscript or ""
    return LB .. "[[#" .. anchor .. "|" .. text .. "]]" .. loc .. RB .. ps
end

function citation0(frame, args)
    local config = frame.args
    local AuthorMask = args.authormask or args.authormask
    local Surname1 = args.last or args.surname or args.last1 or args.surname1 or args.author1 or args.authors or args.author
    local Surname2 = args.last2 or args.surname2 or args.author2
    local Surname3 = args.last3 or args.surname3 or args.author3
    local Surname4 = args.last4 or args.surname4 or args.author4
    local Surname5 = args.last5 or args.surname5 or args.author5
    local Surname6 = args.last6 or args.surname6 or args.author6
    local Surname7 = args.last7 or args.surname7 or args.author7
    local Surname8 = args.last8 or args.surname8 or args.author8
    local Surname9 = args.last9 or args.surname9 or args.author9
    local Given1 = args.first1 or args.given1 or args.first or args.given
    local Given2 = args.first2 or args.given2
    local Given3 = args.first3 or args.given3
    local Given4 = args.first4 or args.given4
    local Given5 = args.first5 or args.given5
    local Given6 = args.first6 or args.given6
    local Given7 = args.first7 or args.given7
    local Given8 = args.first8 or args.given8
    local Given9 = args.first9 or args.given9
    local Authorlink1 = args.authorlink or args.author1link or args.authorlink1
    local Authorlink2 = args.author2link or args.authorlink2
    local Authorlink3 = args.author3link or args.authorlink3
    local Authorlink4 = args.author4link or args.authorlink4
    local Authorlink5 = args.author5link or args.authorlink5
    local Authorlink6 = args.author6link or args.authorlink6
    local Authorlink7 = args.author7link or args.authorlink7
    local Authorlink8 = args.author8link or args.authorlink8
    local Authorlink9 = args.author9link or args.authorlink9
    local Coauthors = args.coauthor or args.coauthors 
    local Date = args.date or ((args.day or "") .. (args.month or "") .. (args.year or args.publicationdate or ""))
    local Title = args.title
    local URL = args.archiveurl or args.url
    local Series = args.series
    local Volume = args.volume
    local Issue = args.issue or args.number
    local Edition = args.edition
    local Place = args.place or args.location
    local PublicationPlace = args.publicationplace or args.place or args.location
    local Publisher = args.publisher
    local Language = args.language
    local Format = args.format
    local ISBN= args.isbn or args.ISBN
    local DOI= args.doi or args.DOI
    if ( Title ~= nil ) then Title = " ''" .. Title .. "''." else Title = "" end
    if ( Publisher ~= nil ) then Publisher = " " .. Publisher .. "." else Publisher = "" end
    local text = "(" .. Date .. ")." .. Title .. Publisher
    text = authorprefix(Surname1, Given1, Authorlink1, "") .. text
    text = authorprefix(Surname2, Given2, Authorlink2, "; ") .. text
    text = authorprefix(Surname3, Given3, Authorlink3, "; ") .. text
    text = authorprefix(Surname4, Given4, Authorlink4, "; ") .. text
    text = authorprefix(Surname5, Given5, Authorlink5, "; ") .. text
    text = authorprefix(Surname6, Given6, Authorlink6, "; ") .. text
    text = authorprefix(Surname7, Given7, Authorlink7, "; ") .. text
    text = authorprefix(Surname8, Given8, Authorlink8, "; ") .. text
    text = authorprefix(Surname9, Given9, Authorlink9, "; ") .. text
    if ( Language ~= nil ) then text = text .. " (in " .. Language .. ")" end
    if ( ISBN ~= nil ) then text = text .. " ISBN " .. ISBN end
    if ( DOI ~= nil ) then text = text .. " " .. doi(frame, DOI) end
    return text
end

-- This is used by templates such as {{SfnRef}} to create the (encoded) anchor name for a Harvard cross-reference hyperlink.
function p.SFNID(frame)
    local pframe = frame:getParent()
    return anchorid(pframe.args)
end

-- This is used by templates such as {{Harvard citation}} to create the Harvard cross-reference text.
function p.Harvard(frame)
    local pframe = frame:getParent()
    return crossref(frame, pframe.args)
end

-- This is used by templates such as {{cite book}} to create the actual citation text.
function p.citation(frame)
    local pframe = frame:getParent()
    return citation0(frame, pframe.args)
end

-- This is used by templates such as {{sfn}} to create the entire cross-reference.
function p.sfn(frame)
    local pframe = frame:getParent()
    local content = crossref(frame, pframe.args)
    local args = { name = anchorid(pframe.args) }
--  return mw.text.tag{name = "ref", contents = content, params = args}
    return tag(frame, {name = "ref", contents = content, params = args})
end

return p
Description	What you type	What you get
Italic	''Italic text''	Italic text
Bold	'''Bold text'''	Bold text
Bold & italic	'''''Bold & italic text'''''	*Bold & italic text*