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import {identCharacters} from "absol/src/String/stringGenerate";

var randomSeed = new Date().getTime();

export function randomUniqueIdent() {
    var s = '';
    var l = identCharacters.length;
    var x = ++randomSeed;
    while (x > 0) {
        s = identCharacters[x % l] + s;
        x = Math.floor(x / l);
    }
    while (s.length < 16) {
        s += identCharacters[Math.floor(Math.random() * l)];
    }
    return s;
}

export function parseMeasureValue(mValue) {
    if (mValue === 'auto') return { unit: null, value: 'auto'};
    if (mValue === 'match_parent') return { unit: null, value: 'match_parent'};
    var value = NaN;
    var unit = null;
    var matched;
    if (typeof mValue === "number") {
        value = mValue;
        unit = 'px';
    } else if (typeof mValue === "string") {
        matched = mValue.match(/([+-]?([0-9]*[.])?[0-9]+([eE][+-]?[0-9]+)?)(px|%|vw|vh)?/i);
        if (matched){
            value = parseFloat(matched[1]);
            unit = matched[4];
        }
    }
    if (isNaN(value)) return null;
    unit = unit ||'px';
    return {
        value: value,
        unit: unit
    };
}