Module:ar-utilities

The following documentation is located at Module:ar-utilities/documentation. Categories were auto-generated by Module:module categorization.
Useful links: subpage list • links • transclusions • testcases • sandbox
This module does several things, including generating text and categories for {{ar-root}}.
local m_links = require("Module:links")
local m_utilities = require("Module:utilities")
local ar_translit = require("Module:ar-translit")
local m_headword = require("Module:headword")

local export = {}

local lang = require("Module:languages").getByCode("ar")
local sc = require("Module:scripts").getByCode("Arab")

local rfind = mw.ustring.find
local rmatch = mw.ustring.match
local rsubn = mw.ustring.gsub
local rsplit = mw.text.split
local u = require("Module:string/char")

local consonants = ""

local function ine(x) -- If Not Empty
    if x == "" then
        return nil
    else
        return x
    end
end

-- version of rsubn() that discards all but the first return value
function rsub(term, foo, bar)
	local retval = rsubn(term, foo, bar)
	return retval
end

-- synthesize a frame so that exported functions meant to be called from
-- templates can be called from the debug console.
function debug_frame(parargs, args)
	return {args = args, getParent = function() return {args = parargs} end}
end

function export.catfix()
	return m_utilities.catfix(lang, sc)
end

--------------------------- hamza processing ------------------------------

-- hamza variants
local HAMZA            = u(0x0621) -- hamza on the line (stand-alone hamza) = ء
local HAMZA_ON_ALIF    = u(0x0623)
local HAMZA_ON_WAW     = u(0x0624)
local HAMZA_UNDER_ALIF = u(0x0625)
local HAMZA_ON_YA      = u(0x0626)
local HAMZA_ANY        = ""
local HAMZA_PH         = u(0xFFF0) -- hamza placeholder

-- diacritics
local A  = u(0x064E) -- fatḥa
local AN = u(0x064B) -- fatḥatān (fatḥa tanwīn)
local U  = u(0x064F) -- ḍamma
local UN = u(0x064C) -- ḍammatān (ḍamma tanwīn)
local I  = u(0x0650) -- kasra
local IN = u(0x064D) -- kasratān (kasra tanwīn)
local SK = u(0x0652) -- sukūn = no vowel
local SH = u(0x0651) -- šadda = gemination of consonants
local DAGGER_ALIF = u(0x0670)
local DIACRITIC_ANY_BUT_SH = ""
-- Pattern matching short vowels
local AIU = ""
-- Pattern matching any diacritics that may be on a consonant
local DIACRITIC = SH .. "?" .. DIACRITIC_ANY_BUT_SH

-- various letters and signs
local ALIF   = u(0x0627) -- ʾalif = ا
local AMAQ   = u(0x0649) -- ʾalif maqṣūra = ى
local AMAD   = u(0x0622) -- ʾalif madda = آ
local WAW    = u(0x0648) -- wāw = و
local YA     = u(0x064A) -- yā = ي

function reorder_shadda(text)
	-- shadda+short-vowel (including tanwīn vowels, i.e. -an -in -un) gets
	-- replaced with short-vowel+shadda during NFC normalisation, which
	-- MediaWiki does for all Unicode strings; however, it makes the
	-- detection process inconvenient, so undo it. (For example, the code in
	-- remove_in would fail to detect the -in in مُتَرَبٍّ because the shadda
	-- would come after the -in.)
	text = rsub(text, "(" .. DIACRITIC_ANY_BUT_SH .. ")" .. SH, SH .. "%1")
	return text
end

local hamza_subs = {
	--------------------------- handle initial hamza --------------------------
	-- put initial hamza on a seat according to following vowel.
 	{"^" .. HAMZA_PH .. "()", HAMZA_UNDER_ALIF .. "%1"},
 	{" " .. HAMZA_PH .. "()", " " .. HAMZA_UNDER_ALIF .. "%1"},
 	{"^" .. HAMZA_PH, HAMZA_ON_ALIF}, -- if no vowel, assume a
 	{" " .. HAMZA_PH, " " .. HAMZA_ON_ALIF}, -- if no vowel, assume a

	----------------------------- handle final hamza --------------------------
	-- "final" hamza may be followed by a short vowel or tanwīn sequence
	-- use a previous short vowel to get the seat
	{"(" .. AIU .. ")(" .. HAMZA_PH .. ")(" .. DIACRITIC .. "?)$",
		function(v, ham, diacrit)
			ham = v == I and HAMZA_ON_YA or v == U and HAMZA_ON_WAW or HAMZA_ON_ALIF
			return v .. ham .. diacrit
		end
	},
	{"(" .. AIU .. ")(" .. HAMZA_PH .. ")(" .. DIACRITIC .. "? )",
		function(v, ham, diacrit)
			ham = v == I and HAMZA_ON_YA or v == U and HAMZA_ON_WAW or HAMZA_ON_ALIF
			return v .. ham .. diacrit
		end
	},
	-- else hamza is on the line
	{HAMZA_PH .. "(" .. DIACRITIC .. "?)$", HAMZA .. "%1"},

	---------------------------- handle medial hamza --------------------------
	-- if long vowel or diphthong precedes, we need to ignore it.
	{"(" .. SK .. "?)(" .. HAMZA_PH .. ")(" .. SH .. "?)()",
		function(prec, ham, shad, v2)
			ham = (v2 == I or v2 == YA) and HAMZA_ON_YA or
				(v2 == U or v2 == WAW) and HAMZA_ON_WAW or
				rfind(prec, YA) and HAMZA_ON_YA or
				HAMZA
			return prec .. ham ..shad .. v2
		end
	},
	-- otherwise, seat of medial hamza relates to vowels on one or both sides.
 	{"()(" .. HAMZA_PH .. ")(" .. SH .. "?)(" .. AN .. "?)",
		function(v1, ham, shad, v2)
			ham = (v1 == I or v2 == I or v2 == YA) and HAMZA_ON_YA or
				(v1 == U or v2 == U or v2 == WAW) and HAMZA_ON_WAW or
				-- special exception for the accusative ending, in words like
				-- جُزْءًا (juzʾan). By the rules of Thackston pp. 281-282 a
				-- hamza-on-alif should appear, but that would result in
				-- two alifs in a row, which is generally forbidden.
				-- According to Haywood/Nahmad pp. 114-115, after sukūn before
				-- the accusative ending (including when a pronominal suffix
				-- follows) hamza is written on yāʾ if the previous letter
				-- is connecting, else on the line. The only examples they
				-- give involve preceding non-connecting z (جُزْءًا juzʾan and
				-- (جُزْءَهُ juzʾahu) and preceding diphthongs, with the only
				-- connecting letter being yāʾ, where we have hamza-on-yāʾ
				-- anyway by the preceding regexp. Haywood/Nahmad's rule seems
				-- too complicated, and since it conflicts with Thackston,
				-- we only implement the case where otherwise two alifs would
				-- appear with the indefinite accusative ending.
				v2 == AN .. ALIF and HAMZA or
				HAMZA_ON_ALIF
			return v1 .. ham .. shad .. v2
		end
	},
	
	--------------------------- handle alif madda -----------------------------
	{HAMZA_ON_ALIF .. A .. "?" .. ALIF, AMAD},

	----------------------- catch any remaining hamzas ------------------------
	{HAMZA_PH, HAMZA}
}

function export.process_hamza(term)
	-- convert HAMZA_PH into appropriate hamza seat
	for _, sub in ipairs(hamza_subs) do
		term = rsub(term, sub, sub)
	end

	-- sequence of hamza-on-wāw + wāw is problematic and leads to a preferred
	-- alternative with some other type of hamza, as well as the original
	-- sequence; sequence of wāw + hamza-on-wāw + wāw is especially problematic
	-- and leads to two different alternatives with the original sequence not
	-- one of them
	if rfind(term, WAW .. "ؤُو") then
		return {rsub(term, WAW .. "ؤُو", WAW .. "ئُو"), rsub(term, WAW .. "ؤُو", WAW .. "ءُو")}
	elseif rfind(term, YA .. "ؤُو") then
		return {rsub(term, YA .. "ؤُو", YA .. "ئُو"), term}
	elseif rfind(term, ALIF .. "ؤُو") then
		-- Here John Mace "Arabic Verbs" is inconsistent. In past-tense parts,
		-- the preferred alternative has hamza on the line, whereas in
		-- non-past parts the preferred alternative has hamza-on-yāʾ even
		-- though the sequence of vowels is identical. It's too complicated to
		-- propagate information about tense through to here so pick one.
		return {rsub(term, ALIF .. "ؤُو", ALIF .. "ئُو"), term}
	-- no alternative spelling in sequence of U/A + hamza-on-wāw + U + wāw;
	-- sequence of I + hamza-on-wāw + U + wāw does not occur (has
	-- hamza-on-yāʾ instead)
	else
		return {term}
	end
end

----------------------------------- misc junk ---------------------------------

local LRM = u(0x200E) -- left-to-right mark

local function link(term, tr, gloss, face, alt)
	if word == "" or word == "&mdash;" then
		return word
	else
		return m_links.full_link( { term = term, alt = alt, lang = lang, tr = tr, sc = sc, gloss = gloss }, face )
	end
end

local function format_genders(lang, sc, genders)
	if genders and #genders > 0 then
		local gen = require("Module:gender and number")
		return "&nbsp;" .. gen.format_list(genders, lang)
	else
		return ""
	end
end

local ordinal = { "first", "second", "third", "fourth", "fifth" }

local function hamzaError(rootTable, output)
	for i, letter in pairs(rootTable) do
		if not rfind(letter, consonants) then
			if rfind(letter, "") then
				table.insert(output, '<span class="previewonly" style="font-size: small;"></span>')
				require("Module:debug").track("ar-root/hamza-error") -- ]
			else
				error(letter .. ", the " .. ordinal .. " letter in the category name, is not a consonant.")
			end
		end
	end
end


local function validateRoot(rootTable, joined_root)
	if type(rootTable) ~= "table" then
		error("rootTable is not a table", 2)
	end
	
	for i, letter in ipairs(rootTable) do
		if mw.ustring.len(letter) > 1 then
			error('"' .. letter .. '", the ' .. ordinal .. ' letter in the root "' .. joined_root .. '" should be a single letter.')
		end
	end
end

function export.ar_root(frame)
	local output = {}
	local categories = {}
	
	local title = mw.title.getCurrentTitle()
	local fulltitle = title.fullText
	local pagename = title.text
	local namespace = title.nsText
	
	local params = {
		 = {},
		 = {},
		 = {},
		 = {},
		 = { type = "boolean", default = false },
		 = { type = "boolean", default = false },
		 = {},
		 = { alias_of = "t" },
		 = { default = "term" },
		 = { type = "boolean", default = false },
		 = { type = "boolean", default = false },
	}
	
	local args = require("Module:parameters").process(frame:getParent().args, params)
	
	local rootLetters = {}
	if not args and namespace == "Template" then
		rootLetters = { "ك", "ت", "ب" }
	elseif args and args then
		rootLetters = { args, args, args, args }
	elseif args then
		rootLetters = rsplit(args, " ")
	else
		rootLetters = rsplit(fulltitle, " ")
	end
	
	hamzaError(rootLetters, output)
	
	local joined_root = table.concat(rootLetters, " ")
	
	validateRoot(rootLetters, joined_root)
	
	local joined_tr = ar_translit.tr(table.concat(rootLetters, "-"), lang, sc, nil, nil, "force") or "-"
	
	if fulltitle == joined_root then
		table.insert(output, m_headword.full_headword({lang = lang, sc = sc, pos_category = "roots", categories = {}, heads = { joined_root }, translits = { joined_tr }}) )
		table.insert(categories, ") or joined_root) .. "]]")
		if args then
			require("Module:debug").track("ar-root") -- ]
		end
	else
		if sc:countCharacters(pagename) < mw.ustring.len(pagename) - 2 then
			require("Module:debug").track("ar-root/title-not-ar") -- ]
			if not args then
				require("Module:debug").track("ar-root/title-not-ar/cat") -- ]
			end
		end
		
		local link_text
		if args then
			link_text = link(nil, joined_tr, ine(args), args, joined_root)
		else
			link_text = link(joined_root, joined_tr, ine(args), args )
		end
		
		table.insert(output, link_text)
		table.insert(categories, m_utilities.format_categories( { "Arabic terms belonging to the root " .. joined_root }, lang) )
	end
	
	if args then
		return joined_root
	elseif args then
		return table.concat(output)
	elseif args then
		return table.concat(categories)
	else
		return table.concat(output) .. table.concat(categories)
	end
end

function export.ar_rootbox(frame)
    local output = {}
    local categories = {}
    local title = mw.title.getCurrentTitle()
    local fulltitle = title.fullText
    local pagename = title.text
    local namespace = title.nsText

    local params = {
         = {},
         = {type = "boolean"},
         = {type = "boolean"},
         = {},
         = {alias_of = "t"},
         = {type = "boolean"},
         = {type = "boolean"},
         = {},
         = {}
    }
	
	local args = require("Module:parameters").process(frame:getParent().args, params)
	
	local rootLetters = {}
	if not args and namespace == "Template" then
		rootLetters = { "ك", "ت", "ب" }
	elseif args and args then
		rootLetters = { args, args, args, args }
	elseif args then
		rootLetters = rsplit(args, " ")
	else
		rootLetters = rsplit(fulltitle, " ")
	end
	
	hamzaError(rootLetters, output)
	
	local joined_root = table.concat(rootLetters, " ")
	
	validateRoot(rootLetters, joined_root)
	
	local joined_tr = ar_translit.tr(table.concat(rootLetters, "-"), lang, sc, nil, nil, "force") or "-"

    if fulltitle == joined_root then
        table.insert(output, m_headword.full_headword(
                         {
                lang = lang,
                sc = sc,
                pos_category = "roots",
                categories = {},
                heads = {joined_root}
            }))

        table.insert(categories, " or joined_root) .. "]]")

        if args then
            return table.concat(output)
        else
            return table.concat(output) .. table.concat(categories)
        end

    else
        local link_text

        if args then
            link_text = link(nil, joined_tr, args, args, joined_root)
        else
            link_text = link(joined_root, joined_tr, args, args)
        end

        table.insert(output, link_text)

        table.insert(categories, m_utilities.format_categories(
                         {"Arabic terms belonging to the root " .. joined_root},
                         lang))

        if args then
            return table.concat(output)
        elseif args then
            return table.concat(output)
        else
            return "<table class=\"wikitable\" style=\"float: right; clear: right; text-align: center;\"><tr><th>]</th></tr><tr><td>" .. link_text .. "</td></tr></table>" .. table.concat(categories)
        end

    end

end

function export.ar_root2(parargs, args)
	return export.ar_root(debug_frame(parargs, args))
end

-- Used in {{ar-adj-in}} so that we can specify a full lemma rather than
-- requiring the user to truncate the -in ending. FIXME: Move ar-adj-in
-- into Lua.
function export.remove_in(frame)
	local lemma = frame.args or error("Lemma required.")
	return rsub(reorder_shadda(lemma), IN .. "$", "")
end

-- Used in {{ar-adj-an}} so that we can specify a full lemma rather than
-- requiring the user to truncate the -an ending. FIXME: Move ar-adj-an
-- into Lua.
function export.remove_an(frame)
	local lemma = frame.args or error("Lemma required.")
	return rsub(reorder_shadda(lemma), AN .. AMAQ .. "$", "")
end

-- Compare two words and find the alternation pattern (vowel changes, prefixes, suffixes etc.)
-- Still a WIP, doesn't work correctly yet.
function export.find_pattern(word1, word2)
	return nil
end

function export.etymology(frame)
	local text, categories = {}, {}
	local linkText
	local frame_params = {
		 = { required = true },
	}
	local frame_args = require("Module:parameters").process(frame.args, frame_params)
	
	local anchor = frame_args
	
	local data = {
		 = {
			anchor = "Color or defect adjectives",
			text = "color adjective",
			categories = { "color/defect adjectives" },
		},
		 = {
			anchor = "Color or defect adjectives",
			text = "defect adjective",
			categories = { "color/defect adjectives" },
		},
	}
	
	local params = {
		 = {},
		 = { type = boolean, default = false },
		 = { type = boolean, default = false },
		 = { alias_of = "lc" },
		 = { type = boolean, default = false},
	}
	
	local args = require("Module:parameters").process(frame:getParent().args, params)
	
	if anchor and data then
		local data = data
		anchor = data.anchor or error('The data table does not include an anchor for "' .. anchor .. '".')
		linkText = data.text or error('The data table does not include link text for "' .. anchor .. '".')
		if not args.lc then
			linkText = rsubn(linkText, "^%a", function(a) return mw.ustring.upper(a) end)
		end
	
		if not args.notext then
			table.insert(text, "]")
		end
		
		if not args.nocat then
			table.insert(categories, m_utilities.format_categories(data.categories, lang) )
		end
	else
		error('The anchor "' .. tostring(anchor) .. '" is not found in the list of anchors.')
	end
	
	return table.concat(text) .. table.concat(categories)
end

return export
Module:ar-utilities

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