function strpad(data, opts) {
    var max = 0;
    opts = opts || {};
    opts.marginLeft = opts.marginLeft || 0;
    opts.marginRight = opts.marginRight || 0;
    opts.padFnc = opts.padFnc || String.prototype.padEnd;

    data.forEach(i => {
        max = Math.max(i.length, max);
    });
    return data.map(i => {
        i = opts.padFnc.call(i, max);
        if (opts.marginLeft)
            i = (" ".repeat(opts.marginLeft)) +i;
        if (opts.marginRight)
            i = i +(" ".repeat(opts.marginRight));
        return i;
    });
}

function arrayPad(arr, opts) {
    var padded = [];
    for (var i =0, len = arr[0].length; i < len; ++i)
        padded.push(strpad(arr.map(arrItem => arrItem[i]), opts ? opts[i] : {}));
    var result = [];
    for (var i =0, len = padded[0].length; i < len; ++i)
        result.push(padded.map(arrItem => arrItem[i]).join(" "));
    return result;
}

module.exports = {
    arrayPad: arrayPad,
    strpad: strpad
};