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