39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
var OMIT_PLUSSIGN = /^(?:\+|(-))?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/;
|
|
var KEEP_PLUSSIGN = /^([\+\-])?0*(\d*)(?:\.0*|(\.\d*?)0*)?$/;
|
|
var unsafeToRemovePlusSignAfter = {
|
|
Dimension: true,
|
|
Hash: true,
|
|
Identifier: true,
|
|
Number: true,
|
|
Raw: true,
|
|
UnicodeRange: true
|
|
};
|
|
|
|
function packNumber(value, item) {
|
|
// omit plus sign only if no prev or prev is safe type
|
|
var regexp = item && item.prev !== null && unsafeToRemovePlusSignAfter.hasOwnProperty(item.prev.data.type)
|
|
? KEEP_PLUSSIGN
|
|
: OMIT_PLUSSIGN;
|
|
|
|
// 100 -> '100'
|
|
// 00100 -> '100'
|
|
// +100 -> '100' (only when safe, e.g. omitting plus sign for 1px+1px leads to single dimension instead of two)
|
|
// -100 -> '-100'
|
|
// 0.123 -> '.123'
|
|
// 0.12300 -> '.123'
|
|
// 0.0 -> ''
|
|
// 0 -> ''
|
|
// -0 -> '-'
|
|
value = String(value).replace(regexp, '$1$2$3');
|
|
|
|
if (value === '' || value === '-') {
|
|
value = '0';
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
module.exports = function(node, item) {
|
|
node.value = packNumber(node.value, item);
|
|
};
|
|
module.exports.pack = packNumber;
|