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* @license Apache-2.0
*
* Copyright (c) 2019 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var isPlainObject = require( '@stdlib/assert/is-plain-object' );
var hasOwnProp = require( '@stdlib/assert/has-own-property' );
var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
var format = require( '@stdlib/string/format' );
// MAIN //
/**
* Validates function options.
*
* @private
* @param {Object} opts - destination object
* @param {Options} options - function options
* @param {string} [options.borderTop] - top border character sequence
* @param {string} [options.borderBottom] - bottom border character sequence
* @param {string} [options.borderLeft] - left border character sequence
* @param {string} [options.borderRight] - right border character sequence
* @param {(boolean|string)} [options.counter] - slide counter
* @param {(PositiveInteger|null)} [options.width] - presentation width
* @param {(PositiveInteger|null)} [options.height] - presentation height
* @param {string} [options.workspace] - REPL workspace name
* @param {string} [options.load] - file path specifying a presentation file to load
* @param {boolean} [options.autoClear] - boolean indicating whether to automatically clear the screen before writing a rendered slide to the REPL
* @param {boolean} [options.loop] - boolean indicating whether to "loop" a presentation
* @throws {Error} must provide valid options
* @returns {(Error|null)} error or null
*
* @example
* var options = {
* 'counter': true
* };
* var opts = {};
* var err = validate( opts, options );
* if ( err ) {
* throw err;
* }
*/
function validate( opts, options ) {
if ( !isPlainObject( options ) ) {
return new TypeError( format( 'invalid argument. Options argument must be an object. Value: `%s`.', options ) );
}
if ( hasOwnProp( options, 'borderTop' ) ) {
opts.borderTop = options.borderTop;
if ( !isString( options.borderTop ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a string. Option: `%s`.', 'borderTop', options.borderTop ) );
}
}
if ( hasOwnProp( options, 'borderBottom' ) ) {
opts.borderBottom = options.borderBottom;
if ( !isString( options.borderBottom ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a string. Option: `%s`.', 'borderBottom', options.borderBottom ) );
}
}
if ( hasOwnProp( options, 'borderLeft' ) ) {
opts.borderLeft = options.borderLeft;
if ( !isString( options.borderLeft ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a string. Option: `%s`.', 'borderLeft', options.borderLeft ) );
}
}
if ( hasOwnProp( options, 'borderRight' ) ) {
opts.borderRight = options.borderRight;
if ( !isString( options.borderRight ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a string. Option: `%s`.', 'borderRight', options.borderRight ) );
}
}
if ( hasOwnProp( options, 'counter' ) ) {
opts.counter = options.counter;
if ( options.counter !== 'progress' && !isBoolean( options.counter ) ) {
return new TypeError( format( 'invalid option. `%s` option must be either a recognized string or boolean. Option: `%s`.', 'counter', options.counter ) );
}
}
if ( hasOwnProp( options, 'width' ) ) {
opts.width = options.width;
if ( options.width !== null && !isPositiveInteger( options.width ) ) {
return new TypeError( format( 'invalid option. `%s` option must be either a positive integer or null. Option: `%s`.', 'width', options.width ) );
}
}
if ( hasOwnProp( options, 'height' ) ) {
opts.height = options.height;
if ( options.height !== null && !isPositiveInteger( options.height ) ) {
return new TypeError( format( 'invalid option. `%s` option must be either a positive integer or null. Option: `%s`.', 'height', options.height ) );
}
}
if ( hasOwnProp( options, 'workspace' ) ) {
opts.workspace = options.workspace;
if ( !isString( options.workspace ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a string. Option: `%s`.', 'workspace', options.workspace ) );
}
}
if ( hasOwnProp( options, 'load' ) ) {
opts.load = options.load;
if ( !isString( options.load ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a string. Option: `%s`.', 'load', options.load ) );
}
}
if ( hasOwnProp( options, 'autoClear' ) ) {
opts.autoClear = options.autoClear;
if ( !isBoolean( options.autoClear ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a boolean. Option: `%s`.', 'autoClear', options.autoClear ) );
}
}
if ( hasOwnProp( options, 'loop' ) ) {
opts.loop = options.loop;
if ( !isBoolean( options.loop ) ) {
return new TypeError( format( 'invalid option. `%s` option must be a boolean. Option: `%s`.', 'loop', options.loop ) );
}
}
return null;
}
// EXPORTS //
module.exports = validate;
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