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 | 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) 2022 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 utf16ToUTF8Array = require( '@stdlib/string/utf16-to-utf8-array' );
// VARIABLES //
// Character codes:
var UNDERSCORE = 95|0;
var PERIOD = 46|0;
var HYPHEN = 45|0;
var TILDE = 126|0;
var ZERO = 48|0;
var NINE = 57|0;
var A = 65|0;
var Z = 90|0;
var a = 97|0;
var z = 122|0;
// MAIN //
/**
* Percent-encodes a UTF-16 encoded string according to [RFC 3986][1].
*
* [1]: https://tools.ietf.org/html/rfc3986#section-2.1
*
* @param {string} str - string to percent-encode
* @returns {string} percent-encoded string
*
* @example
* var str1 = 'Ladies + Gentlemen';
*
* var str2 = percentEncode( str1 );
* // returns 'Ladies%20%2B%20Gentlemen'
*/
function percentEncode( str ) {
var byte;
var out;
var len;
var buf;
var i;
// Convert to an array of octets using UTF-8 encoding (see https://tools.ietf.org/html/rfc3986#section-2.5):
buf = utf16ToUTF8Array( str );
// Encode the string...
len = buf.length;
out = '';
for ( i = 0; i < len; i++ ) {
byte = buf[ i ];
if (
// ASCII Digits:
( byte >= ZERO && byte <= NINE ) ||
// ASCII uppercase letters:
( byte >= A && byte <= Z ) ||
// ASCII lowercase letters:
( byte >= a && byte <= z ) ||
// ASCII unreserved characters (see https://tools.ietf.org/html/rfc3986#section-2.3):
byte === HYPHEN ||
byte === PERIOD ||
byte === UNDERSCORE ||
byte === TILDE
) {
out += str.charAt( i );
} else {
// Convert an octet to hexadecimal and uppercase according to the RFC (see https://tools.ietf.org/html/rfc3986#section-2.1):
out += '%' + byte.toString( 16 ).toUpperCase();
}
}
return out;
}
// EXPORTS //
module.exports = percentEncode;
|