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Module:File link: Difference between revisions

516 bytes added ,  10 years ago
allow specifying height and width values as strings ending in px
m (Protected Module:File link: High-risk Lua module ([Edit=Allow only template editors and admins] (indefinite) [Move=Allow only template editors and admins] (indefinite)))
(allow specifying height and width values as strings ending in px)
Line 5: Line 5:


local fileLink = {}
local fileLink = {}
local function checkTypeStringOrNum(funcName, pos, arg)
local argType = type(arg)
if argType ~= 'nil' and argType ~= 'string' and argType ~= 'number' then
error(string.format(
"bad argument #%d to '%s' (string or number expected, got %s)",
pos,
funcName,
argType
), 3)
end
end


function fileLink.new(filename)
function fileLink.new(filename)
Line 52: Line 64:
end
end


local function sizeError(methodName)
local function validateSize(method, px)
-- Used for formatting duplication errors in size-related methods.
-- Validate input for size-related functions. The px type is checked
error(string.format(
-- using checkTypeStringOrNum, so will be a string, a number, or nil.
"duplicate size argument detected in '%s'"
if px and data.isUpright then
.. " ('upright' cannot be used in conjunction with height or width)",
error(string.format(
methodName
"duplicate size argument detected in '%s' ('upright' cannot be"
), 3)
.. ' used in conjunction with height or width)',
method
), 3)
end
if type(px) == 'string' then
local origPx = px
px = px:match('^(%d+)px$') or px
px = tonumber(px)
if not px then
error(string.format(
"invalid string '%s' passed to '%s'",
origPx,
method
), 3)
end
end
-- px is now a number or nil.
if px and px < 1 or math.floor(px) ~= px then
error(string.format(
"invalid image size specified in '%s' (size must be a positive"
.. 'integer)',
method
), 3)
end
return px
end
end
function data:width(px)
function data:width(px)
checkSelf(self, 'width')
checkSelf(self, 'width')
checkType('fileLink:width', 1, px, 'number', true)
checkTypeStringOrNum('fileLink:width', 1, px)
if px and data.isUpright then
px = validateSize('fileLink:width', px)
sizeError('fileLink:width')
end
data.theWidth = px
data.theWidth = px
return self
return self
Line 73: Line 107:
function data:height(px)
function data:height(px)
checkSelf(self, 'height')
checkSelf(self, 'height')
checkType('fileLink:height', 1, px, 'number', true)
checkTypeStringOrNum('fileLink:height', 1, px)
if px and data.isUpright then
px = validateSize('fileLink:height', px)
sizeError('fileLink:height')
end
data.theHeight = px
data.theHeight = px
return self
return self
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data.theLang = s
data.theLang = s
return self
return self
end
local function checkTypeStringOrNum(funcName, pos, arg)
local argType = type(arg)
if argType ~= 'nil' and argType ~= 'string' and argType ~= 'number' then
error(string.format(
"bad argument #%d to '%s' (string or number expected, got %s)",
pos,
funcName,
argType
), 3)
end
end
end
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