580 lines
11 KiB
JavaScript
580 lines
11 KiB
JavaScript
'use strict';
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var assert = require('assert');
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/**
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* Validator
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* @alias module:utils.Validator
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* @constructor
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* @param {Object} options
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*/
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function Validator(data) {
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if (!(this instanceof Validator))
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return new Validator(data);
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this.data = [];
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if (data)
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this.init(data);
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}
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/**
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* Initialize the validator.
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* @private
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* @param {Object} data
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*/
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Validator.prototype.init = function init(data) {
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assert(data && typeof data === 'object');
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if (!Array.isArray(data))
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data = [data];
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this.data = data;
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};
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/**
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* Test whether value is present.
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* @param {String} key
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* @returns {Boolean}
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*/
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Validator.prototype.has = function has(key) {
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var i, map, value;
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assert(typeof key === 'string' || typeof key === 'number',
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'Key must be a string.');
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for (i = 0; i < this.data.length; i++) {
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map = this.data[i];
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value = map[key];
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if (value != null)
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return true;
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}
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return false;
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};
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/**
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* Get a value (no type validation).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Object|null}
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*/
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Validator.prototype.get = function get(key, fallback) {
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var i, keys, value, map;
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if (fallback === undefined)
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fallback = null;
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if (Array.isArray(key)) {
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keys = key;
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for (i = 0; i < keys.length; i++) {
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key = keys[i];
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value = this.get(key);
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if (value !== null)
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return value;
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}
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return fallback;
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}
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assert(typeof key === 'string' || typeof key === 'number',
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'Key must be a string.');
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for (i = 0; i < this.data.length; i++) {
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map = this.data[i];
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if (!map || typeof map !== 'object')
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throw new ValidationError('Data is not an object.');
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value = map[key];
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if (value != null)
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return value;
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}
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return fallback;
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};
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/**
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* Get a value (as a string).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {String|null}
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*/
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Validator.prototype.str = function str(key, fallback) {
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var value = this.get(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string')
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throw new ValidationError(fmt(key) + ' must be a string.');
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return value;
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};
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/**
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* Get a value (as a number).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|null}
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*/
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Validator.prototype.num = function num(key, fallback) {
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var value = this.get(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string') {
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if (typeof value !== 'number')
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throw new ValidationError(fmt(key) + ' must be a number.');
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return value;
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}
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if (!/^\d+$/.test(value))
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throw new ValidationError(fmt(key) + ' must be a number.');
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value = parseInt(value, 10);
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if (!isFinite(value))
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throw new ValidationError(fmt(key) + ' must be a number.');
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return value;
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};
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/**
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* Get a value (as a uint32).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|null}
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*/
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Validator.prototype.u32 = function u32(key, fallback) {
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var value = this.num(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (value % 1 !== 0 || value < 0 || value > 0xffffffff)
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throw new ValidationError(fmt(key) + ' must be a uint32.');
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return value;
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};
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/**
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* Get a value (as a uint64).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|null}
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*/
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Validator.prototype.u64 = function u64(key, fallback) {
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var value = this.num(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (value % 1 !== 0 || value < 0 || value > 0x1fffffffffffff)
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throw new ValidationError(fmt(key) + ' must be a uint64.');
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return value;
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};
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/**
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* Get a value (as an int32).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|null}
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*/
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Validator.prototype.i32 = function i32(key, fallback) {
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var value = this.num(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (value % 1 !== 0 || Math.abs(value) > 0x7fffffff)
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throw new ValidationError(fmt(key) + ' must be an int32.');
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return value;
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};
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/**
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* Get a value (as an int64).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|null}
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*/
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Validator.prototype.i64 = function i64(key, fallback) {
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var value = this.num(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (value % 1 !== 0 || Math.abs(value) > 0x1fffffffffffff)
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throw new ValidationError(fmt(key) + ' must be an int64.');
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return value;
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};
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/**
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* Get a value (as a satoshi number or btc string).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|null}
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*/
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Validator.prototype.amt = function amt(key, fallback) {
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var value = this.get(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string') {
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if (typeof value !== 'number')
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throw new ValidationError(fmt(key) + ' must be a number.');
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return value;
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}
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if (!/^\d+(\.\d{0,8})?$/.test(value))
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throw new ValidationError(fmt(key) + ' must be a number.');
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value = parseFloat(value);
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if (!isFinite(value))
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throw new ValidationError(fmt(key) + ' must be a number.');
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value *= 1e8;
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if (value % 1 !== 0 || value < 0 || value > 0x1fffffffffffff)
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throw new ValidationError(fmt(key) + ' must be a uint64.');
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return value;
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};
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/**
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* Get a value (as a btc float).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|null}
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*/
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Validator.prototype.btc = function btc(key, fallback) {
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var value = this.num(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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value *= 1e8;
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if (value % 1 !== 0 || value < 0 || value > 0x1fffffffffffff)
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throw new ValidationError(fmt(key) + ' must be a uint64.');
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return value;
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};
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/**
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* Get a value (as a reverse hash).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Hash|null}
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*/
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Validator.prototype.hash = function hash(key, fallback) {
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var value = this.get(key);
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var out = '';
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var i;
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string') {
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if (!Buffer.isBuffer(value))
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throw new ValidationError(fmt(key) + ' must be a hash.');
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if (value.length !== 32)
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throw new ValidationError(fmt(key) + ' must be a hash.');
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return value.toString('hex');
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}
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if (value.length !== 64)
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throw new ValidationError(fmt(key) + ' must be a hex string.');
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if (!/^[0-9a-f]+$/i.test(value))
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throw new ValidationError(fmt(key) + ' must be a hex string.');
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for (i = 0; i < value.length; i += 2)
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out = value.slice(i, i + 2) + out;
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return out;
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};
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/**
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* Get a value (as a number or reverse hash).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|Hash|null}
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*/
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Validator.prototype.numhash = function numhash(key, fallback) {
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var value = this.get(key);
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if (value === null)
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return fallback;
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if (typeof value === 'string')
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return this.hash(key);
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return this.num(key);
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};
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/**
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* Get a value (as a number or string).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Number|String|null}
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*/
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Validator.prototype.numstr = function numstr(key, fallback) {
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var value = this.get(key);
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var num;
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string') {
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if (typeof value !== 'number')
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throw new ValidationError(fmt(key) + ' must be a number or string.');
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return value;
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}
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num = parseInt(value, 10);
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if (!isFinite(num))
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return value;
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return num;
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};
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/**
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* Get a value (as a boolean).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Boolean|null}
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*/
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Validator.prototype.bool = function bool(key, fallback) {
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var value = this.get(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string') {
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if (typeof value !== 'boolean')
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throw new ValidationError(fmt(key) + ' must be a boolean.');
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return value;
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}
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if (value === 'true' || value === '1')
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return true;
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if (value === 'false' || value === '0')
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return false;
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throw new ValidationError(fmt(key) + ' must be a boolean.');
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};
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/**
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* Get a value (as a buffer).
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* @param {String} key
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* @param {Object?} fallback
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* @param {String?} enc
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* @returns {Buffer|null}
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*/
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Validator.prototype.buf = function buf(key, fallback, enc) {
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var value = this.get(key);
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var data;
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if (!enc)
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enc = 'hex';
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string') {
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if (!Buffer.isBuffer(value))
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throw new ValidationError(fmt(key) + ' must be a buffer.');
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return value;
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}
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data = new Buffer(value, enc);
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if (data.length !== Buffer.byteLength(value, enc))
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throw new ValidationError(fmt(key) + ' must be a ' + enc + ' string.');
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return data;
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};
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/**
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* Get a value (as an array).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Array|String[]|null}
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*/
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Validator.prototype.array = function array(key, fallback) {
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var value = this.get(key);
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var i, result, parts, part;
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'string') {
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if (!Array.isArray(value))
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throw new ValidationError(fmt(key) + ' must be a list/array.');
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return value;
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}
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parts = value.trim().split(/\s*,\s*/);
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result = [];
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for (i = 0; i < parts.length; i++) {
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part = parts[i];
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if (part.length === 0)
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continue;
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result.push(part);
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}
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return result;
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};
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/**
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* Get a value (as an object).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Object|null}
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*/
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Validator.prototype.obj = function obj(key, fallback) {
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var value = this.get(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (!value || typeof value !== 'object')
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throw new ValidationError(fmt(key) + ' must be an object.');
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return value;
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};
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/**
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* Get a value (as a function).
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* @param {String} key
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* @param {Object?} fallback
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* @returns {Function|null}
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*/
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Validator.prototype.func = function func(key, fallback) {
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var value = this.get(key);
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if (fallback === undefined)
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fallback = null;
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if (value === null)
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return fallback;
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if (typeof value !== 'function')
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throw new ValidationError(fmt(key) + ' must be a function.');
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return value;
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};
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/*
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* Helpers
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*/
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function fmt(key) {
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if (typeof key === 'number')
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return 'Param #' + key;
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return key;
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}
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function inherits(obj, from) {
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var f = function() {};
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f.prototype = from.prototype;
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obj.prototype = new f;
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obj.prototype.constructor = obj;
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}
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function ValidationError(msg) {
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Error.call(this);
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if (Error.captureStackTrace)
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Error.captureStackTrace(this, ValidationError);
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this.type = 'ValidationError';
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this.message = msg;
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}
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inherits(ValidationError, Error);
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/*
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* Expose
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*/
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exports = Validator;
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exports.Validator = Validator;
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exports.Error = ValidationError;
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module.exports = exports;
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