112 lines
3.9 KiB
JavaScript
112 lines
3.9 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var isObject = require( '@stdlib/assert/is-plain-object' );
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var hasOwnProp = require( '@stdlib/assert/has-own-property' );
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var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
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var isNonNegativeInteger = require( '@stdlib/assert/is-nonnegative-integer' ).isPrimitive;
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var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
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var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
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// MAIN //
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/**
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* Validates function options.
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*
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* @private
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* @param {Object} opts - destination object
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* @param {Options} options - options to validate
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* @param {string} [options.cmd] - executable file/command
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* @param {PositiveInteger} [options.concurrency] - number of scripts to execute concurrently
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* @param {PositiveInteger} [options.workers] - number of workers
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* @param {boolean} [options.ordered] - boolean indicating whether to preserve the order of script output
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* @param {NonNegativeInteger} [options.uid] - process user identity
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* @param {NonNegativeInteger} [options.gid] - process group identity
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* @param {NonNegativeInteger} [options.maxBuffer] - max child process `stdio` buffer size
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* @returns {(Error|null)} error or null
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*
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* @example
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* var opts = {};
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* var options = {
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* 'concurrency': 4,
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* 'workers': 2
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* };
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* var err = validate( opts, options );
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* if ( err ) {
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* throw err;
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* }
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*/
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function validate( opts, options ) {
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if ( !isObject( options ) ) {
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return new TypeError( 'invalid argument. Options argument must be an object. Value: `' + options + '`.' );
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}
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if ( hasOwnProp( options, 'concurrency' ) ) {
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opts.concurrency = options.concurrency;
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if ( !isPositiveInteger( opts.concurrency ) ) {
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return new TypeError( 'invalid option. `concurrency` option must be a positive integer. Option: `' + opts.concurrency + '`.' );
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}
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}
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if ( hasOwnProp( options, 'workers' ) ) {
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opts.workers = options.workers;
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if ( !isPositiveInteger( opts.workers ) ) {
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return new TypeError( 'invalid option. `workers` option must be a positive integer. Option: `' + opts.workers + '`.' );
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}
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}
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if ( hasOwnProp( options, 'cmd' ) ) {
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opts.cmd = options.cmd;
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if ( !isString( opts.cmd ) ) {
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return new TypeError( 'invalid option. `cmd` option must be a primitive string. Option: `' + opts.cmd + '`.' );
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}
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}
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if ( hasOwnProp( options, 'ordered' ) ) {
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opts.ordered = options.ordered;
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if ( !isBoolean( opts.ordered ) ) {
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return new TypeError( 'invalid option. `ordered` option must be a primitive boolean. Option: `' + opts.ordered + '`.' );
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}
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}
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if ( hasOwnProp( options, 'uid' ) ) {
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opts.uid = options.uid;
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if ( !isNonNegativeInteger( opts.uid ) ) {
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return new TypeError( 'invalid option. `uid` option must be a nonnegative integer. Option: `' + opts.uid + '`.' );
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}
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}
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if ( hasOwnProp( options, 'gid' ) ) {
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opts.gid = options.gid;
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if ( !isNonNegativeInteger( opts.gid ) ) {
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return new TypeError( 'invalid option. `gid` option must be a nonnegative integer. Option: `' + opts.gid + '`.' );
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}
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}
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if ( hasOwnProp( options, 'maxBuffer' ) ) {
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opts.maxBuffer = options.maxBuffer;
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if ( !isNonNegativeInteger( opts.maxBuffer ) ) {
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return new TypeError( 'invalid option. `maxBuffer` option must be a nonnegative integer. Option: `' + opts.maxBuffer + '`.' );
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}
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}
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return null;
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}
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// EXPORTS //
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module.exports = validate;
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