locutus
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Locutus other languages' standard libraries to JavaScript for fun and educational purposes
30 lines (29 loc) • 1.74 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.quoted_printable_decode = quoted_printable_decode;
function quoted_printable_decode(str) {
// discuss at: https://locutus.io/php/quoted_printable_decode/
// parity verified: PHP 8.3
// original by: Ole Vrijenhoek
// bugfixed by: Brett Zamir (https://brett-zamir.me)
// bugfixed by: Theriault (https://github.com/Theriault)
// reimplemented by: Theriault (https://github.com/Theriault)
// improved by: Brett Zamir (https://brett-zamir.me)
// example 1: quoted_printable_decode('a=3Db=3Dc')
// returns 1: 'a=b=c'
// example 2: quoted_printable_decode('abc =20\r\n123 =20\r\n')
// returns 2: 'abc \r\n123 \r\n'
// example 3: quoted_printable_decode('012345678901234567890123456789012345678901234567890123456789012345678901234=\r\n56789')
// returns 3: '01234567890123456789012345678901234567890123456789012345678901234567890123456789'
// example 4: quoted_printable_decode("Lorem ipsum dolor sit amet=23, consectetur adipisicing elit")
// returns 4: 'Lorem ipsum dolor sit amet#, consectetur adipisicing elit'
// Decodes all equal signs followed by two hex digits
const RFC2045Decode1 = /=\r\n/gm;
// the RFC states against decoding lower case encodings, but following apparent PHP behavior
const RFC2045Decode2IN = /=([0-9A-F]{2})/gim;
// RFC2045Decode2IN = /=([0-9A-F]{2})/gm,
const RFC2045Decode2OUT = function (_sMatch, sHex) {
return String.fromCharCode(parseInt(sHex, 16));
};
return str.replace(RFC2045Decode1, '').replace(RFC2045Decode2IN, RFC2045Decode2OUT);
}