JavaScript quoted_printable_decode

Convert a quoted-printable string to an 8 bit string

function quoted_printable_decode (str) {
    // Convert a quoted-printable string to an 8 bit string  
    // 
    // version: 1008.1718
    // discuss at: http://phpjs.org/functions/quoted_printable_decode    // +   original by: Ole Vrijenhoek
    // +   bugfixed by: Brett Zamir (http://brett-zamir.me)
    // +   reimplemented by: Theriault
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Theriault    // *     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
    // Removes softline breaks
    var RFC2045Decode1 = /=\r\n/gm,    // Decodes all equal signs followed by two hex digits
    RFC2045Decode2IN = /=([0-9A-F]{2})/gim, // the RFC states against decoding lower case encodings, but following apparent PHP behavior
    // RFC2045Decode2IN = /=([0-9A-F]{2})/gm,
 
    RFC2045Decode2OUT = function (sMatch, sHex) {        return String.fromCharCode(parseInt(sHex, 16));
    };
    return str.replace(RFC2045Decode1, '').replace(RFC2045Decode2IN, RFC2045Decode2OUT);
}

external links: original PHP docs | raw js source

Examples

» Example 1

Running

1	quoted_printable_decode('a=3Db=3Dc');

Should return

'a=b=c'

» Example 2

Running

1	quoted_printable_decode('abc =20\r\n123 =20\r\n');

Should return

1	'abc \r\n123 \r\n'

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

php.js uses JsLint to help us keep our code consistent and prevent some common bugs.

Eventually we want all code to pass or at least take into consideration most fixes suggested by JsLint, following this JsLint configuration we’ve decided on.

Authors

Thanks to the following developers, you get to have quoted_printable_decode goodness in JavaScript.

Ole Vrijenhoek ( original )
Brett Zamir ( bugfixed improved )
Theriault ( bugfixed reimplemented )

Comments

Add Comment

Name

Website

Title

Content

Use:

[CODE]
your_stuff('here');
[/CODE]

for proper code formatting
By submitting code here you are allowing us to use it in php.js hence dual licensing it under the MIT and GPL licenses

No comments yet. Be the first!

Contribute a New function