local
 p
 =
 {}


function
 p
.
main
(
frame
)

	local
 result
 =
 ""

	local
 title
 =
  mw
.
title
.
new
(
mw
.
text
.
trim
(
frame
.
args
[
1
]),
 6
)

	
	if
 (
title
 ~=
 nil
 and
 title
.
fileExists
)
 then

		local
 image
 =
 title
.
file

		local
 w
 =
 image
.
width

		local
 h
 =
 image
.
height

		local
 ratio
 =
 w
/
h

	
		-- N?u t? l? w/h > 2.5 ho?c < 0.5 thi bao l?i

		if
 (
ratio
 <
 0.5
 or
 ratio
 >
 2.5
)
 then

			local
 span
 =
 mw
.
html
.
create
(
"span"
):
attr
(
"class"
,
 "error"
):
wikitext
(
"Hinh ?nh ch?n l?c ph?i co t? l? chi?u r?ng/chi?u cao t? 0.5 đ?n 2.5. Hinh nay đang co t? l? la "
 ..
 math.floor
(
ratio
 *
 100
)
 /
 100
 ..
 " [= "
 ..
 w
 ..
 "/"
 ..
 h
 ..
 "]."
)

			result
 =
 tostring
(
span
)

		end

	end

	
	return
 result

end


return
 p