rfc2231

rfc2231
=======

Encode and decode rfc2231 (MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages, and Continuations) and rfc5987 (Character Set and Language Encoding for Hypertext Transfer Protocol (HTTP) Header Field Parameters).

``js
var rfc2231 = require('rfc2231');

console.log(rfc2231.unfoldAndDecodeParameters({
'title0': "us-ascii'en'This%20is%20even%20more%20",
'title1': '%2A%2A%2Afun%2A%2A%2A%20',
'title*2': "is it not?"
});
// {title: "This is even more fun is it not?"}

console.log(rfc2231.encodeAndFoldParameters({
foo: '0123456789012345678901234567890123456789012345678901234567890123456789'
});
// {
// 'foo*0': '"012345678901234567890123456789012345678901234567890123456789"',
// 'foo*1': '"0123456789"'
// }

`

rfc2231.unfoldAndDecodeParameters takes advantage of the iconv module if available, and otherwise falls back to iconv-lite`.