Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be Summoned unless you control a face-up "Butterfly Dagger - Elma". When this card is Normal or Special Summoned: You can target 1 appropriate Equip Spell Card in your Graveyard; equip that target to this card.
--ガーディアン・エルマ
--Guardian Elma
local s,id=GetID()
function s.initial_effect(c)
	--sum limit
	local e1=Effect.CreateEffect(c)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_CANNOT_SUMMON)
	e1:SetCondition(s.sumlimit)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_CANNOT_FLIP_SUMMON)
	c:RegisterEffect(e2)
	local e3=e1:Clone()
	e3:SetCode(EFFECT_SPSUMMON_CONDITION)
	c:RegisterEffect(e3)
	--equip
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,0))
	e4:SetCategory(CATEGORY_EQUIP)
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e4:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e4:SetCode(EVENT_SUMMON_SUCCESS)
	e4:SetTarget(s.eqtg)
	e4:SetOperation(s.eqop)
	c:RegisterEffect(e4)
	local e5=e4:Clone()
	e5:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e5)
end
s.listed_names={69243953}
function s.cfilter(c)
	return c:IsFaceup() and c:IsCode(69243953)
end
function s.sumlimit(e)
	return not Duel.IsExistingMatchingCard(s.cfilter,e:GetHandlerPlayer(),LOCATION_ONFIELD,0,1,nil)
end
function s.filter(c,ec)
	return c:IsType(TYPE_EQUIP) and c:CheckEquipTarget(ec)
end
function s.eqtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.filter(chkc,e:GetHandler()) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_SZONE)>0
		and Duel.IsExistingTarget(s.filter,tp,LOCATION_GRAVE,0,1,nil,e:GetHandler()) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_EQUIP)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_GRAVE,0,1,1,nil,e:GetHandler())
	Duel.SetOperationInfo(0,CATEGORY_LEAVE_GRAVE,g,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_EQUIP,g,1,0,0)
end
function s.eqop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.Equip(tp,tc,c)
	end
end