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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 13x 13x 12x 10x 10x 12x 13x 1x 1x 13x 1x 1x 1x 1x 13x 2x 2x 2x 2x 2x | /**
* @license Apache-2.0
*
* Copyright (c) 2021 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 contains = require( '@stdlib/array/base/assert/contains' ).factory;
var format = require( '@stdlib/string/format' );
// VARIABLES //
var MODES = [ 'full', 'shorthand', 'either' ];
var isMode = contains( MODES );
// MAIN //
/**
* Returns a regular expression to match a hexadecimal color.
*
* @param {string} [mode='full'] - color format (`full`, `shorthand`, or `either`)
* @throws {Error} mode must be `full`, `shorthand`, or `either`
* @returns {RegExp} regular expression
*
* @example
* var RE = reColorHexadecimal();
* // returns <RegExp>
*
* var bool = RE.test( 'ffffff' );
* // returns true
*
* bool = RE.test( '000' );
* // returns false
*/
function reColorHexadecimal( mode ) {
if ( arguments.length > 0 ) {
if ( !isMode( mode ) ) {
throw new Error( format( 'invalid argument. Mode must be one of the following: "%s". Value: `%s`.', MODES.join( '", "' ), mode ) );
}
}
if ( mode === 'shorthand' ) {
return /^[0-9A-F]{3}$/i;
}
if ( mode === 'either' ) {
return /^[0-9A-F]{3}$|^[0-9A-F]{6}$/i;
}
// Case: mode === 'full'
return /^[0-9A-F]{6}$/i;
}
// EXPORTS //
module.exports = reColorHexadecimal;
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