950 lines
17 KiB
JavaScript
950 lines
17 KiB
JavaScript
/*!
|
|
* config.js - configuration parsing for bcoin
|
|
* Copyright (c) 2016-2017, Christopher Jeffrey (MIT License).
|
|
* https://github.com/bcoin-org/bcoin
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
const assert = require('assert');
|
|
const path = require('path');
|
|
const os = require('os');
|
|
const fs = require('../utils/fs');
|
|
const HOME = os.homedir ? os.homedir() : '/';
|
|
|
|
/**
|
|
* Config Parser
|
|
* @alias module:node.Config
|
|
* @constructor
|
|
* @param {String} module - Module name (e.g. `bcoin`).
|
|
*/
|
|
|
|
function Config(module) {
|
|
if (!(this instanceof Config))
|
|
return new Config(module);
|
|
|
|
assert(typeof module === 'string');
|
|
assert(module.length > 0);
|
|
|
|
this.module = module;
|
|
this.network = 'main';
|
|
this.prefix = path.join(HOME, `.${module}`);
|
|
|
|
this.options = Object.create(null);
|
|
this.data = Object.create(null);
|
|
this.env = Object.create(null);
|
|
this.args = Object.create(null);
|
|
this.argv = [];
|
|
this.query = Object.create(null);
|
|
this.hash = Object.create(null);
|
|
}
|
|
|
|
/**
|
|
* Option name aliases.
|
|
* @const {Object}
|
|
*/
|
|
|
|
Config.alias = {
|
|
conf: {},
|
|
env: {
|
|
'seed': 'seeds',
|
|
'node': 'nodes'
|
|
},
|
|
arg: {
|
|
'seed': 'seeds',
|
|
'node': 'nodes',
|
|
'n': 'network'
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Inject options.
|
|
* @param {Object} options
|
|
*/
|
|
|
|
Config.prototype.inject = function inject(options) {
|
|
let keys = Object.keys(options);
|
|
|
|
for (let key of keys) {
|
|
let value = options[key];
|
|
|
|
switch (key) {
|
|
case 'hash':
|
|
case 'query':
|
|
case 'env':
|
|
case 'argv':
|
|
case 'config':
|
|
continue;
|
|
}
|
|
|
|
this.set(key, value);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Load options from hash, query, env, or args.
|
|
* @param {Object} options
|
|
*/
|
|
|
|
Config.prototype.load = function load(options) {
|
|
if (options.hash)
|
|
this.parseHash(options.hash);
|
|
|
|
if (options.query)
|
|
this.parseQuery(options.query);
|
|
|
|
if (options.env)
|
|
this.parseEnv(options.env);
|
|
|
|
if (options.argv)
|
|
this.parseArg(options.argv);
|
|
|
|
this.network = this.getNetwork();
|
|
this.prefix = this.getPrefix();
|
|
};
|
|
|
|
/**
|
|
* Open a config file.
|
|
* @param {String} file - e.g. `bcoin.conf`.
|
|
* @throws on IO error
|
|
*/
|
|
|
|
Config.prototype.open = function open(file) {
|
|
let path, text;
|
|
|
|
if (fs.unsupported)
|
|
return;
|
|
|
|
path = this.getFile(file);
|
|
|
|
try {
|
|
text = fs.readFileSync(path, 'utf8');
|
|
} catch (e) {
|
|
if (e.code === 'ENOENT')
|
|
return;
|
|
throw e;
|
|
}
|
|
|
|
this.parseConfig(text);
|
|
|
|
this.network = this.getNetwork();
|
|
this.prefix = this.getPrefix();
|
|
};
|
|
|
|
/**
|
|
* Set default option.
|
|
* @param {String} key
|
|
* @param {Object} value
|
|
*/
|
|
|
|
Config.prototype.set = function set(key, value) {
|
|
assert(typeof key === 'string', 'Key must be a string.');
|
|
|
|
if (value == null)
|
|
return;
|
|
|
|
key = key.toLowerCase().replace(/-/g, '');
|
|
|
|
this.options[key] = value;
|
|
};
|
|
|
|
/**
|
|
* Test whether a config option is present.
|
|
* @param {String} key
|
|
* @returns {Boolean}
|
|
*/
|
|
|
|
Config.prototype.has = function has(key) {
|
|
if (typeof key === 'number') {
|
|
assert(key >= 0, 'Index must be positive.');
|
|
if (key >= this.argv.length)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
assert(typeof key === 'string', 'Key must be a string.');
|
|
|
|
key = key.toLowerCase().replace(/-/g, '');
|
|
|
|
if (this.hash[key] != null)
|
|
return true;
|
|
|
|
if (this.query[key] != null)
|
|
return true;
|
|
|
|
if (this.args[key] != null)
|
|
return true;
|
|
|
|
if (this.env[key] != null)
|
|
return true;
|
|
|
|
if (this.data[key] != null)
|
|
return true;
|
|
|
|
if (this.options[key] != null)
|
|
return true;
|
|
|
|
return false;
|
|
};
|
|
|
|
/**
|
|
* Get a config option.
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Object|null}
|
|
*/
|
|
|
|
Config.prototype.get = function get(key, fallback) {
|
|
let keys, value;
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (Array.isArray(key)) {
|
|
keys = key;
|
|
for (let key of keys) {
|
|
value = this.get(key);
|
|
if (value !== null)
|
|
return value;
|
|
}
|
|
return fallback;
|
|
}
|
|
|
|
if (typeof key === 'number') {
|
|
assert(key >= 0, 'Index must be positive.');
|
|
if (key >= this.argv.length)
|
|
return fallback;
|
|
return this.argv[key];
|
|
}
|
|
|
|
assert(typeof key === 'string', 'Key must be a string.');
|
|
|
|
key = key.toLowerCase().replace(/-/g, '');
|
|
|
|
if (this.hash[key] != null)
|
|
return this.hash[key];
|
|
|
|
if (this.query[key] != null)
|
|
return this.query[key];
|
|
|
|
if (this.args[key] != null)
|
|
return this.args[key];
|
|
|
|
if (this.env[key] != null)
|
|
return this.env[key];
|
|
|
|
if (this.data[key] != null)
|
|
return this.data[key];
|
|
|
|
if (this.options[key] != null)
|
|
return this.options[key];
|
|
|
|
return fallback;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as a string).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {String|null}
|
|
*/
|
|
|
|
Config.prototype.str = function str(key, fallback) {
|
|
let value = this.get(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (typeof value !== 'string')
|
|
throw new Error(`${key} must be a string.`);
|
|
|
|
return value;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as a number).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Number|null}
|
|
*/
|
|
|
|
Config.prototype.num = function num(key, fallback) {
|
|
let value = this.get(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (typeof value !== 'string') {
|
|
if (typeof value !== 'number')
|
|
throw new Error(`${key} must be a positive integer.`);
|
|
return value;
|
|
}
|
|
|
|
if (!/^\d+$/.test(value))
|
|
throw new Error(`${key} must be a positive integer.`);
|
|
|
|
value = parseInt(value, 10);
|
|
|
|
if (!isFinite(value))
|
|
throw new Error(`${key} must be a positive integer.`);
|
|
|
|
return value;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as a float).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Number|null}
|
|
*/
|
|
|
|
Config.prototype.flt = function flt(key, fallback) {
|
|
let value = this.get(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (typeof value !== 'string') {
|
|
if (typeof value !== 'number')
|
|
throw new Error(`${key} must be a float.`);
|
|
return value;
|
|
}
|
|
|
|
if (!/^\d*(?:\.\d*)?$/.test(value))
|
|
throw new Error(`${key} must be a float.`);
|
|
|
|
value = parseFloat(value);
|
|
|
|
if (!isFinite(value))
|
|
throw new Error(`${key} must be a float.`);
|
|
|
|
return value;
|
|
};
|
|
|
|
/**
|
|
* Get a value (as a satoshi number or btc string).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Number|null}
|
|
*/
|
|
|
|
Config.prototype.amt = function amt(key, fallback) {
|
|
let value = this.get(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (typeof value !== 'string') {
|
|
if (typeof value !== 'number')
|
|
throw new Error(`${key} must be an amount.`);
|
|
return value;
|
|
}
|
|
|
|
if (!/^\d+(\.\d{0,8})?$/.test(value))
|
|
throw new Error(`${key} must be an amount.`);
|
|
|
|
value = parseFloat(value);
|
|
|
|
if (!isFinite(value))
|
|
throw new Error(`${key} must be an amount.`);
|
|
|
|
value *= 1e8;
|
|
|
|
if (value % 1 !== 0 || value < 0 || value > 0x1fffffffffffff)
|
|
throw new Error(`${key} must be an amount (uint64).`);
|
|
|
|
return value;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as a boolean).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Boolean|null}
|
|
*/
|
|
|
|
Config.prototype.bool = function bool(key, fallback) {
|
|
let value = this.get(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (typeof value !== 'string') {
|
|
if (typeof value !== 'boolean')
|
|
throw new Error(`${key} must be a boolean.`);
|
|
return value;
|
|
}
|
|
|
|
if (value === 'true' || value === '1')
|
|
return true;
|
|
|
|
if (value === 'false' || value === '0')
|
|
return false;
|
|
|
|
throw new Error(`${key} must be a boolean.`);
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as a buffer).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Buffer|null}
|
|
*/
|
|
|
|
Config.prototype.buf = function buf(key, fallback) {
|
|
let value = this.get(key);
|
|
let data;
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (typeof value !== 'string') {
|
|
if (!Buffer.isBuffer(value))
|
|
throw new Error(`${key} must be a buffer.`);
|
|
return value;
|
|
}
|
|
|
|
data = Buffer.from(value, 'hex');
|
|
|
|
if (data.length !== value.length / 2)
|
|
throw new Error(`${key} must be a hex string.`);
|
|
|
|
return data;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as an array of strings).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {String[]|null}
|
|
*/
|
|
|
|
Config.prototype.array = function array(key, fallback) {
|
|
let value = this.get(key);
|
|
let result, parts;
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (typeof value !== 'string') {
|
|
if (!Array.isArray(value))
|
|
throw new Error(`${key} must be an array.`);
|
|
return value;
|
|
}
|
|
|
|
parts = value.trim().split(/\s*,\s*/);
|
|
result = [];
|
|
|
|
for (let part of parts) {
|
|
if (part.length === 0)
|
|
continue;
|
|
|
|
result.push(part);
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as an object).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Object|null}
|
|
*/
|
|
|
|
Config.prototype.obj = function obj(key, fallback) {
|
|
let value = this.get(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (!value || typeof value !== 'object')
|
|
throw new Error(`${key} must be an object.`);
|
|
|
|
return value;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as a function).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Function|null}
|
|
*/
|
|
|
|
Config.prototype.func = function func(key, fallback) {
|
|
let value = this.get(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
if (!value || typeof value !== 'function')
|
|
throw new Error(`${key} must be a function.`);
|
|
|
|
return value;
|
|
};
|
|
|
|
/**
|
|
* Get a config option (as a string).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {String|null}
|
|
*/
|
|
|
|
Config.prototype.path = function _path(key, fallback) {
|
|
let value = this.str(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
switch (value[0]) {
|
|
case '~': // home dir
|
|
value = path.join(HOME, value.substring(1));
|
|
break;
|
|
case '@': // prefix
|
|
value = path.join(this.prefix, value.substring(1));
|
|
break;
|
|
default: // cwd
|
|
break;
|
|
}
|
|
|
|
return path.normalize(value);
|
|
};
|
|
|
|
/**
|
|
* Get a config option (in MB).
|
|
* @param {String} key
|
|
* @param {Object?} fallback
|
|
* @returns {Number|null}
|
|
*/
|
|
|
|
Config.prototype.mb = function mb(key, fallback) {
|
|
let value = this.num(key);
|
|
|
|
if (fallback === undefined)
|
|
fallback = null;
|
|
|
|
if (value === null)
|
|
return fallback;
|
|
|
|
return value * 1024 * 1024;
|
|
};
|
|
|
|
/**
|
|
* Grab network type from config data.
|
|
* @private
|
|
* @returns {String}
|
|
*/
|
|
|
|
Config.prototype.getNetwork = function getNetwork() {
|
|
let network = this.str('network');
|
|
|
|
if (!network)
|
|
network = 'main';
|
|
|
|
assert(isAlpha(network), 'Bad network.');
|
|
|
|
return network;
|
|
};
|
|
|
|
/**
|
|
* Grab prefix from config data.
|
|
* @private
|
|
* @returns {String}
|
|
*/
|
|
|
|
Config.prototype.getPrefix = function getPrefix() {
|
|
let prefix = this.str('prefix');
|
|
let network;
|
|
|
|
if (prefix) {
|
|
if (prefix[0] === '~')
|
|
prefix = path.join(HOME, prefix.substring(1));
|
|
return prefix;
|
|
}
|
|
|
|
prefix = path.join(HOME, `.${this.module}`);
|
|
network = this.str('network');
|
|
|
|
if (network) {
|
|
assert(isAlpha(network), 'Bad network.');
|
|
if (network !== 'main')
|
|
prefix = path.join(prefix, network);
|
|
}
|
|
|
|
return path.normalize(prefix);
|
|
};
|
|
|
|
/**
|
|
* Grab config filename from config data.
|
|
* @private
|
|
* @param {String} file
|
|
* @returns {String}
|
|
*/
|
|
|
|
Config.prototype.getFile = function getFile(file) {
|
|
let name = this.str('config');
|
|
|
|
if (name)
|
|
return name;
|
|
|
|
return path.join(this.prefix, file);
|
|
};
|
|
|
|
/**
|
|
* Ensure prefix.
|
|
* @returns {Promise}
|
|
*/
|
|
|
|
Config.prototype.ensure = function ensure() {
|
|
if (fs.unsupported)
|
|
return Promise.resolve();
|
|
|
|
return fs.mkdirp(this.prefix);
|
|
};
|
|
|
|
/**
|
|
* Create a file path using `prefix`.
|
|
* @param {String} file
|
|
* @returns {String}
|
|
*/
|
|
|
|
Config.prototype.location = function location(file) {
|
|
return path.join(this.prefix, file);
|
|
};
|
|
|
|
/**
|
|
* Parse config text.
|
|
* @private
|
|
* @param {String} text
|
|
*/
|
|
|
|
Config.prototype.parseConfig = function parseConfig(text) {
|
|
let parts;
|
|
|
|
assert(typeof text === 'string', 'Config must be text.');
|
|
|
|
text = text.trim();
|
|
parts = text.split(/\n+/);
|
|
|
|
for (let line of parts) {
|
|
let key, value, eq, col, alias;
|
|
|
|
line = line.trim();
|
|
|
|
if (line.length === 0)
|
|
continue;
|
|
|
|
if (/^\s*#/.test(line))
|
|
continue;
|
|
|
|
eq = line.indexOf('=');
|
|
col = line.indexOf(':');
|
|
|
|
if (col !== -1 && (col < eq || eq === -1))
|
|
eq = col;
|
|
|
|
if (eq === -1) {
|
|
key = line.trim();
|
|
value = '';
|
|
} else {
|
|
key = line.substring(0, eq).trim();
|
|
value = line.substring(eq + 1).trim();
|
|
}
|
|
|
|
key = key.replace(/\-/g, '').toLowerCase();
|
|
|
|
alias = Config.alias.conf[key];
|
|
if (alias)
|
|
key = alias;
|
|
|
|
if (key.length === 0)
|
|
continue;
|
|
|
|
if (value.length === 0)
|
|
continue;
|
|
|
|
this.data[key] = value;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Parse arguments.
|
|
* @private
|
|
* @param {Array?} argv
|
|
*/
|
|
|
|
Config.prototype.parseArg = function parseArg(argv) {
|
|
let key;
|
|
|
|
if (!argv || typeof argv !== 'object')
|
|
argv = process.argv;
|
|
|
|
assert(Array.isArray(argv));
|
|
|
|
for (let i = 2; i < argv.length; i++) {
|
|
let arg = argv[i];
|
|
let value, alias, equals;
|
|
|
|
assert(typeof arg === 'string');
|
|
|
|
if (arg.indexOf('--') === 0) {
|
|
// e.g. --opt
|
|
arg = arg.split('=');
|
|
key = arg[0];
|
|
|
|
if (arg.length > 1) {
|
|
// e.g. --opt=val
|
|
value = arg.slice(1).join('=').trim();
|
|
equals = true;
|
|
} else {
|
|
value = 'true';
|
|
equals = false;
|
|
}
|
|
|
|
key = key.replace(/\-/g, '');
|
|
|
|
if (key.length === 0)
|
|
continue;
|
|
|
|
if (value.length === 0)
|
|
continue;
|
|
|
|
alias = Config.alias.arg[key];
|
|
if (alias)
|
|
key = alias;
|
|
|
|
this.args[key] = value;
|
|
|
|
continue;
|
|
}
|
|
|
|
if (arg[0] === '-') {
|
|
// e.g. -abc
|
|
arg = arg.substring(1);
|
|
|
|
for (key of arg) {
|
|
alias = Config.alias.arg[key];
|
|
if (alias)
|
|
key = alias;
|
|
this.args[key] = 'true';
|
|
equals = false;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
// e.g. foo
|
|
value = arg.trim();
|
|
|
|
if (value.length === 0)
|
|
continue;
|
|
|
|
if (key && !equals) {
|
|
this.args[key] = value;
|
|
key = null;
|
|
} else {
|
|
this.argv.push(value);
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Parse environment variables.
|
|
* @private
|
|
* @param {Object?} env
|
|
* @returns {Object}
|
|
*/
|
|
|
|
Config.prototype.parseEnv = function parseEnv(env) {
|
|
let prefix = this.module;
|
|
let keys;
|
|
|
|
prefix = prefix.toUpperCase();
|
|
prefix = prefix.replace(/-/g, '_');
|
|
prefix += '_';
|
|
|
|
if (!env || typeof env !== 'object')
|
|
env = process.env;
|
|
|
|
assert(env && typeof env === 'object');
|
|
|
|
keys = Object.keys(env);
|
|
|
|
for (let key of keys) {
|
|
let value, alias;
|
|
|
|
if (key.indexOf(prefix) !== 0)
|
|
continue;
|
|
|
|
assert(typeof env[key] === 'string');
|
|
|
|
value = env[key].trim();
|
|
|
|
key = key.substring(prefix.length);
|
|
key = key.replace(/_/g, '').toLowerCase();
|
|
|
|
if (key.length === 0)
|
|
continue;
|
|
|
|
if (value.length === 0)
|
|
continue;
|
|
|
|
alias = Config.alias.env[key];
|
|
if (alias)
|
|
key = alias;
|
|
|
|
this.env[key] = value;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Parse uri querystring variables.
|
|
* @private
|
|
* @param {String} query
|
|
*/
|
|
|
|
Config.prototype.parseQuery = function parseQuery(query) {
|
|
if (typeof query !== 'string') {
|
|
if (!global.location)
|
|
return {};
|
|
|
|
query = global.location.search;
|
|
|
|
if (typeof query !== 'string')
|
|
return {};
|
|
}
|
|
|
|
return this.parseForm(query, this.query);
|
|
};
|
|
|
|
/**
|
|
* Parse uri hash variables.
|
|
* @private
|
|
* @param {String} hash
|
|
*/
|
|
|
|
Config.prototype.parseHash = function parseHash(hash) {
|
|
if (typeof hash !== 'string') {
|
|
if (!global.location)
|
|
return {};
|
|
|
|
hash = global.location.hash;
|
|
|
|
if (typeof hash !== 'string')
|
|
return {};
|
|
}
|
|
|
|
return this.parseForm(hash, this.hash);
|
|
};
|
|
|
|
/**
|
|
* Parse form-urlencoded variables.
|
|
* @private
|
|
* @param {String} query
|
|
*/
|
|
|
|
Config.prototype.parseForm = function parseForm(query, map) {
|
|
let parts;
|
|
|
|
assert(typeof query === 'string');
|
|
|
|
if (query.length === 0)
|
|
return;
|
|
|
|
if (query[0] === '?' || query[0] === '#')
|
|
query = query.substring(1);
|
|
|
|
parts = query.split('&');
|
|
|
|
for (let pair of parts) {
|
|
let index = pair.indexOf('=');
|
|
let key, value, alias;
|
|
|
|
if (index === -1) {
|
|
key = pair;
|
|
value = '';
|
|
} else {
|
|
key = pair.substring(0, index);
|
|
value = pair.substring(index + 1);
|
|
}
|
|
|
|
key = unescape(key);
|
|
key = key.replace(/\-/g, '').toLowerCase();
|
|
|
|
if (key.length === 0)
|
|
continue;
|
|
|
|
value = unescape(value);
|
|
|
|
if (value.length === 0)
|
|
continue;
|
|
|
|
alias = Config.alias.env[key];
|
|
if (alias)
|
|
key = alias;
|
|
|
|
map[key] = value;
|
|
}
|
|
};
|
|
|
|
/*
|
|
* Helpers
|
|
*/
|
|
|
|
function unescape(str) {
|
|
try {
|
|
str = decodeURIComponent(str);
|
|
str = str.replace(/\+/g, ' ');
|
|
} catch (e) {
|
|
;
|
|
}
|
|
str = str.replace(/\0/g, '');
|
|
return str;
|
|
}
|
|
|
|
function isAlpha(str) {
|
|
if (typeof str !== 'string')
|
|
return false;
|
|
|
|
if (!/^[a-z0-9]+$/.test(str))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Expose
|
|
*/
|
|
|
|
module.exports = Config;
|