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UniqueColours.js
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UniqueColours.js
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/*! Parker v0.0.0 - MIT license */
'use strict';
var _ = require('lodash');
module.exports = {
id: 'unique-colours',
name: 'Unique Colors',
type: 'value',
aggregate: 'list',
format: 'list',
measure: function (value) {
return getColourHexes(value).map(function (colourHex) {
return getLongHashForm(colourHex).toUpperCase();
});
},
filter: function (value, index, self) {
return self.indexOf(value) === index;
}
};
var getColourHexes = function (value) {
var colourHexes = value.match(/#[0-9a-fA-F]{3,6}/g);
if (_.isNull(colourHexes)) {
colourHexes = [];
}
return colourHexes;
};
var getLongHashForm = function (string) {
if (string.length === 4) {
var r = string.substring(1, 2),
g = string.substring(2, 3),
b = string.substring(3);
return '#' + r + r + g + g + b + b;
}
return string;
};