clone json

clone-json.js

// from: https://jsperf.com/deep-copy-vs-json-stringify-json-parse/15

function recursiveDeepCopy(o) {
    var newO,
        i;

    if (typeof o !== 'object') {
        return o;
    }
    if (!o) {
        return o;
    }

    if ('[object Array]' === Object.prototype.toString.apply(o)) {
        newO = [];
        for (i = 0; i < o.length; i += 1) {
            newO[i] = recursiveDeepCopy(o[i]);
        }
        return newO;
    }

    newO = {};
    for (i in o) {
        if (o.hasOwnProperty(i)) {
            newO[i] = recursiveDeepCopy(o[i]);
        }
    }
    return newO;
}

function recursiveDeepCopyNoTouch(o) {
    var i;

    if (typeof o !== 'object') {
        return o;
    }
    if (!o) {
        return o;
    }

    if ('[object Array]' === Object.prototype.toString.apply(o)) {
        for (i = 0; i < o.length; i += 1) {
            recursiveDeepCopy(o[i]);
        }
        return o;
    }

    for (i in o) {
        if (o.hasOwnProperty(i)) {
            recursiveDeepCopy(o[i]);
        }
    }
    return o;
}

function deepCopy(o) {
    var copy = o,
        k;

    if (o && typeof o === 'object') {
        copy = Object.prototype.toString.call(o) === '[object Array]' ? [] : {};
        for (k in o) {
            copy[k] = deepCopy(o[k]);
        }
    }

    return copy;
}

function clone(obj) {
    if (obj == null || typeof(obj) != 'object')
        return obj;

    var temp = new obj.constructor();
    for (var key in obj)
        temp[key] = clone(obj[key]);

    return temp;
}

var uc = {
    "list": {
        "0oVwOM": {
            "id": "0oVwOM",
            "parent": "pTlmbh",
            "name": "New node",
            "created_at": 1384289621
        },
        "aHxe8k": {
            "id": "aHxe8k",
            "parent": "Fhs2hL",
            "name": "hjkhjkhjk",
            "created_at": 1384354593
        },
        "Fhs2hL": {
            "id": "Fhs2hL",
            "parent": "root",
            "name": "test",
            "created_at": 1383403881
        },
        "HYPSgv": {
            "id": "HYPSgv",
            "parent": "0oVwOM",
            "name": "New node",
            "created_at": 1384342657
        },
        "osFIMf": {
            "id": "osFIMf",
            "parent": "root",
            "name": "New node",
            "created_at": 1384354584
        },
        "PsovXE": {
            "id": "PsovXE",
            "parent": "root",
            "name": "hjkhjkhjk",
            "created_at": 1384354589
        },
        "pTlmbh": {
            "id": "pTlmbh",
            "parent": "Fhs2hL",
            "name": "New node",
            "created_at": 1384289277
        },
        "RbXhdJ": {
            "id": "RbXhdJ",
            "parent": "root",
            "name": "empty",
            "created_at": 1384359806
        }
    },
    "maps": {
        "parent": {
            "pTlmbh": {
                "0oVwOM": {
                    "id": "0oVwOM",
                    "parent": "pTlmbh",
                    "name": "New node",
                    "created_at": 1384289621
                }
            },
            "Fhs2hL": {
                "aHxe8k": {
                    "id": "aHxe8k",
                    "parent": "Fhs2hL",
                    "name": "hjkhjkhjk",
                    "created_at": 1384354593
                },
                "pTlmbh": {
                    "id": "pTlmbh",
                    "parent": "Fhs2hL",
                    "name": "New node",
                    "created_at": 1384289277
                }
            },
            "root": {
                "Fhs2hL": {
                    "id": "Fhs2hL",
                    "parent": "root",
                    "name": "test",
                    "created_at": 1383403881
                },
                "osFIMf": {
                    "id": "osFIMf",
                    "parent": "root",
                    "name": "New node",
                    "created_at": 1384354584
                },
                "PsovXE": {
                    "id": "PsovXE",
                    "parent": "root",
                    "name": "hjkhjkhjk",
                    "created_at": 1384354589
                },
                "RbXhdJ": {
                    "id": "RbXhdJ",
                    "parent": "root",
                    "name": "empty",
                    "created_at": 1384359806
                }
            },
            "0oVwOM": {
                "HYPSgv": {
                    "id": "HYPSgv",
                    "parent": "0oVwOM",
                    "name": "New node",
                    "created_at": 1384342657
                }
            }
        },
        "path": [
            ["Fhs2hL"],
            ["Fhs2hL", "aHxe8k"],
            ["Fhs2hL", "pTlmbh"],
            ["Fhs2hL", "pTlmbh", "0oVwOM"],
            ["Fhs2hL", "pTlmbh", "0oVwOM", "HYPSgv"],
            ["osFIMf"],
            ["PsovXE"],
            ["RbXhdJ"]
        ]
    }
};
var isPlainObject = function (obj) {
    return obj != null && typeof obj === 'object'
        && !Array.isArray(obj) && obj.constructor === Object;
}

var trackable = function (o, stats, prependKey) {
    var out, key;

    var stats = stats || [];
    var prependKey = prependKey || '';

    if (typeof o !== 'object') {
        return o;
    }
    if (!o) {
        return o;
    }

    if ('[object Array]' === Object.prototype.toString.apply(o)) {
        // ignore arrays
        return JSON.parse(JSON.stringify(o));
    }

    out = {};
    var each = function (v, k) {
        Object.defineProperty(out, k, {
            enumerable: true,
            get: function () {
                stats.push(catKey);
                return v;
            }
        });
    };
    for (key in o) {
        if (o.hasOwnProperty(key)) {
            var catKey = (prependKey ? prependKey + '.' : '') + key;
            var value = trackable(o[key], stats, catKey);
            each(value, key);
        }
    }

    if (!prependKey) {
        Object.defineProperty(out, 'stats', {
            enumerable: true,
            value: function () {
                return stats;
            }
        });
    }

    return out;
};

function recursive(obj) {
    var clone, i;

    if (typeof obj !== 'object' || !obj)
        return obj;

    if ('[object Array]' === Object.prototype.toString.apply(obj)) {
        clone = [];
        var len = obj.length;
        for (i = 0; i < len; i++)
            clone[i] = recursive(obj[i]);
        return clone;
    }

    clone = {};
    for (i in obj)
        if (obj.hasOwnProperty(i))
            clone[i] = recursive(obj[i]);
    return clone;
}