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index.js
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index.js
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/**
* @title joola
* @overview the open-source data analytics framework
* @copyright Joola Smart Solutions, Ltd. <info@joo.la>
* @license GPL-3.0+ <http://spdx.org/licenses/GPL-3.0+>
*
* Licensed under GNU General Public License 3.0 or later.
* Some rights reserved. See LICENSE, AUTHORS.
**/
'use strict';
var
joola = require('../joola'),
traverse = require('traverse'),
kindof = require('kindof'),
dj = require('describe-json'),
util = require('util'),
stringify = require('circular-json'),
crypto = require('crypto'),
ce = require('cloneextend');
var common = ce.clone(util);
common._id = 'common';
module.exports = exports = common;
common.extend = common._extend;
common.mixin = function (origin, add, overwrite) {
// Don't do anything if add isn't an object
if (!add || typeof add !== 'object') return origin;
var keys = Object.keys(add);
var i = 0;//keys.length;
while (i < keys.length) {
if (origin.hasOwnProperty(keys[i])) {
if (overwrite)
origin[keys[i]] = add[keys[i]];
//else
//common.extend(origin[keys[i]], add[keys[i]]);
}
else
origin[keys[i]] = add[keys[i]];
i++;
}
return origin;
};
common.uuid = function (length) {
// http://stackoverflow.com/questions/8855687/secure-random-token-in-node-js
function randomString(length, chars) {
var charsLength = chars.length;
var randomBytes = crypto.randomBytes(length);
var result = new Array(length);
var cursor = 0;
for (var i = 0; i < length; i++) {
cursor += randomBytes[i];
result[i] = chars[cursor % charsLength];
}
return result.join('');
}
return randomString(length || 32, 'abcdefghijklmnopqrstuwxyzABCDEFGHIJKLMNOPQRSTUWXYZ0123456789');
};
common.stringify = function (obj, callback) {
callback = callback || function () {
};
return callback(null, stringify.stringify(obj));
};
common.parse = function (string, callback) {
return callback(null, JSON.parse(string));
};
common.hash = function (string) {
return require('crypto').createHash('md5').update(string).digest("hex");
};
common.sanitize = function (obj, proto, leavePrivate) {
var cleanup = function (elem) {
var result = {};
Object.keys(elem).forEach(function (key) {
if (!leavePrivate) {
if (proto.hasOwnProperty(key) && !proto[key].hidden && !proto[key].private) {
result[key] = elem[key];
}
}
else if (proto.hasOwnProperty(key) && !proto[key].hidden) {
result[key] = elem[key];
}
});
if (!leavePrivate) {
Object.keys(proto).forEach(function (key) {
if (!proto[key].hidden && !proto[key].private) {
if (!result.hasOwnProperty(key)) {
result[key] = null;
}
}
});
}
return result;
};
if (proto) {
if (Array.isArray(obj)) {
obj.forEach(function (elem, i) {
obj[i] = cleanup(elem);
});
}
else {
obj = cleanup(obj);
}
}
else {
if (obj instanceof Object) {
for (var k in obj) {
if (obj.hasOwnProperty(k)) {
//recursive call to scan property
if (k.substring(0, 1) === '_' && k !== '_')
delete obj[k];
else
common.sanitize(obj[k]);
}
}
}
}
return obj;
};
common.obj2array = function (obj) {
var result = [];
/* istanbul ignore if */
if (!obj)
return [];
/* istanbul ignore if */
if (typeof obj !== 'object')
return [];
Object.keys(obj).forEach(function (key) {
if (Object.keys(obj[key]).length > 0) {
var elem = {
key: key
};
elem = joola.common.extend(elem, obj[key]);
result.push(elem);
}
});
return result;
};
/* jshint ignore:start */
common.typeof = function (obj) {
if (typeof(obj) == "object") {
if (obj === null) return "null";
if (obj.constructor == (new Array).constructor) return "array";
if (obj.constructor == (new Date).constructor) return "date";
if (Date.parse(obj)) return "date";
if (obj.constructor == (new RegExp).constructor) return "regex";
return "object";
}
return typeof(obj);
};
/* jshint ignore:end */
common.checkNested = function (obj, lookup) {
var path = lookup.split('.');
var result = obj;
for (var i = 0, length = path.length; i < length; ++i) {
if (result) {
result = result[path[i]];
}
}
Object.keys(obj).forEach(function (key) {
if (result)
return;
var elem = obj[key];
if (Array.isArray(elem)) {
elem = elem[0];
result = common.checkNested(elem, lookup.substring(lookup.indexOf('.') + 1));
}
});
return result;
};
common.checkNestedArray = function (obj, lookup) {
var result;
Object.keys(obj).forEach(function (key) {
if (result)
return;
var elem = obj[key];
if (Array.isArray(elem) && key === lookup.substring(0, lookup.indexOf('.'))) {
result = elem;
}
});
return result;
};
common.flatten = function (obj) {
var result = [];
traverse(obj).map(function (x) {
if (kindof(x) === 'array' && !this.isRoot) {
this.array = true;
this.value = x;
}
if (kindof(x) !== 'object') {
if (kindof(x) === 'array') {
}
else if (this.parent && !this.parent.array)
result.push([this.path.join('.'), x]);
else if (this.parent && this.parent.array) {
if (!this.parent.handled) {
this.parent.handled = true;
result.push([this.parent.path.join('.'), this.parent.value]);
}
}
}
});
return result;
};
common.objToArray = function (obj) {
var result = [];
Object.keys(obj).forEach(function (key) {
result.push(obj[key]);
});
return result;
};
common.flatGetSet = function (obj, is, value) {
if (typeof is == 'string') {
return common.flatGetSet(obj, is.split('.'), value);
}
else if (is.length == 1 && value !== undefined) {
if (value === null) {
//console.log('delete',obj, is[0]);
return delete obj[is[0]];
}
else {
return obj[is[0]] = value; // jshint ignore:line
}
}
else if (is.length === 0) {
if (typeof obj === 'object' && Object.keys(obj).length === 0)
return null;
else {
//check if converted array
if (typeof obj === 'object' && Object.keys(obj)[0] === '0')
return common.objToArray(obj);
return obj;
}
}
else {
if (typeof obj === 'undefined' || obj === null)
obj = {};
if (typeof obj[is[0]] === 'undefined' || obj[is[0]] === null)
obj[is[0]] = {};
return common.flatGetSet(obj[is[0]], is.slice(1), value);
}
};
common.nest = function (obj) {
var result = {};
obj.forEach(function (elem) {
var namespace = elem[0];
var value = elem[1];
var parts = namespace.split(".");
var last = parts.pop();
var node = result;
parts.forEach(function (key) {
node = node[key] = node[key] || {};
});
node[last] = value;
});
return result;
};
/**
* @function hashPassword
* @param {string} plainPassword contains a simple text, plain password for hashing
* @param {string} [salt] the salt to use for hashing
* @return {string} hashed password with the hash.
* Hashes a plain text password using MD5.
* - `plainPassword` is the plain password to hash
*
* The function returns on completion a hashed string.
*
* ```js
* var plainPassword = 'password'
* var hashed = joola.dispatch.users.hashPassword(plainPassword);
* console.log(plainPassword, hashed);
* ```
*/
common.hashPassword = function (plainPassword, salt) {
if (!plainPassword)
return null;
try {
if (!salt)
salt = joola.common.uuid();
var hash = crypto.createHash('md5').update(plainPassword.toString()).digest('hex');
return salt + '$' + hash;
}
catch (ex) {
/* istanbul ignore next */
return null;
}
};
common.inspect = function (obj) {
return require('util').inspect(obj, {depth: null, colors: true});
};
common.cleanupArray = function (array) {
var clean = [];
array.forEach(function (item) {
if (item)
clean.push(item);
});
return clean;
};