Function cleanOne

src/components/color/index.js:143–183

(val)

};

function cleanOne(val) {
    if(isNumeric(val) || typeof val !== 'string') return val;

    var valTrim = val.trim();
    if(valTrim.slice(0, 3) !== 'rgb') return val;

    var match = valTrim.match(/^rgba?\s*\(([^()]*)\)$/);
    if(!match) return val;

    var parts = match[1].trim().split(/\s*[\s,]\s*/);
    var rgba = valTrim.charAt(3) === 'a' && parts.length === 4;
    if(!rgba && parts.length !== 3) return val;

    for(var i = 0; i < parts.length; i++) {
        if(!parts[i].length) return val;
        parts[i] = Number(parts[i]);

        if(!(parts[i] >= 0)) {
            // all parts must be non-negative numbers

            return val;
        }

        if(i === 3) {
            // alpha>1 gets clipped to 1

            if(parts[i] > 1) parts[i] = 1;
        } else if(parts[i] >= 1) {
            // r, g, b must be < 1 (ie 1 itself is not allowed)

            return val;
        }
    }

    var rgbStr = Math.round(parts[0] * 255) + ', ' +
        Math.round(parts[1] * 255) + ', ' +
        Math.round(parts[2] * 255);

    if(rgba) return 'rgba(' + rgbStr + ', ' + parts[3] + ')';
    return 'rgb(' + rgbStr + ')';
}