Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /**
* @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 isString = require( '@stdlib/assert/is-string' ).isPrimitive;
// VARIABLES //
/**
* Matches parts of a URI according to RFC 3986.
*
* ```text
* <scheme name> : <hierarchical part > [ ? <query> ] [ # <fragment> ]
* ```
*
* Regular expression: `/(?:([^:\/?#]+):)?(?:\/\/([^\/?#]*))?([^?#]*)(?:\?[^#]*)?(?:#.*)?/`
*
* - `(?:([^:\/?#]+):)`
*
* - match the scheme, including the `:`, but only capture the scheme name
*
* - `?`
*
* - match the scheme zero or one times
*
* - `(?:\/\/([^\/?#]*))`
*
* - match the hierarchical part which is everything which is not a `/`, `#`, or `?`, but only capture whatever comes after the `//`
*
* - `?`
*
* - match the hierarchical part zero or one times
*
* - `([^?#]*)`
*
* - capture everything (the path) until meeting a `?` or `#`
*
* - `(?:\?[^#]*)`
*
* - match, but don't capture, a query
*
* - `?`
*
* - match the query zero or one times
*
* - `(?:#.*)`
*
* - match, but don't capture, a fragment
*
* - `?`
*
* - match the fragment zero or one times
*
* @private
* @constant
* @type {RegExp}
* @default /(?:([^:\/?#]+):)?(?:\/\/([^\/?#]*))?([^?#]*)(?:\?[^#]*)?(?:#.*)?/
*/
var RE_URI = /(?:([^:\/?#]+):)?(?:\/\/([^\/?#]*))?([^?#]*)(?:\?[^#]*)?(?:#.*)?/; // eslint-disable-line no-useless-escape
// Illegal characters (anything which is not in between the square brackets):
var RE_ILLEGALS = /[^a-z0-9:\/?#\[\]@!$&'()*+,;=.\-_~%]/i; // eslint-disable-line no-useless-escape
// Incomplete HEX escapes:
var RE_HEX1 = /%[^0-9a-f]/i;
var RE_HEX2 = /%[0-9a-f](:?[^0-9a-f]|$)/i;
// If authority is not present, path must not begin with '//'
var RE_PATH = /^\/\//;
// Scheme must begin with a letter, then consist of letters, digits, '+', '.', or '-' => e.g., 'http', 'https', 'ftp'
var RE_SCHEME = /^[a-z][a-z0-9+\-.]*$/;
// MAIN //
/**
* Tests whether a value is a relative URI.
*
* @param {*} value - value to test
* @returns {boolean} boolean indicating whether a value is a relative URI
*
* @example
* var bool = isRelativeURI( './beep/boop' );
* // returns true
*
* @example
* var bool = isRelativeURI( '/dashboard/admin' );
* // returns true
*
* @example
* var bool = isRelativeURI( 'https://wikipedia.org' );
* // returns false
*
* @example
* var bool = isRelativeURI( null );
* // returns false
*/
function isRelativeURI( value ) {
var authority;
var scheme;
var parts;
var path;
if ( !isString( value ) ) {
return false;
}
// Check for illegal characters:
if ( RE_ILLEGALS.test( value ) ) {
return false;
}
// Check for incomplete HEX escapes:
if (
RE_HEX1.test( value ) ||
RE_HEX2.test( value )
) {
return false;
}
// Split the string into various URI components:
parts = value.match( RE_URI );
scheme = parts[ 1 ];
authority = parts[ 2 ];
path = parts[ 3 ];
if (
!scheme ||
!scheme.length ||
!RE_SCHEME.test( scheme.toLowerCase() )
) {
return true;
}
if (
!authority &&
RE_PATH.test( path )
) {
return true;
}
return false;
}
// EXPORTS //
module.exports = isRelativeURI;
|