Encode and decode quoted-printable strings according to rfc2045
npm install libqpEncode and decode quoted-printable strings according to RFC2045.
Install with npm
``
npm install libqp
Require in your script
`javascript`
const libqp = require('libqp');
Encode Buffer objects or unicode strings with
`
libqp.encode(val) → String
Where
- val is a Buffer or an unicode string
Example
`javascript`
libqp.encode('jõgeva');
// j=C3=B5geva
Quoted-Printable encoded lines are limited to 76 characters but encode method might return lines longer than the limit.
To enforce soft line breaks on lines longer than 76 (or any other length) characters, use wrap
`
libqp.wrap(str[, lineLength]) → String
Where
- str is a Quoted-Printable encoded string
- lineLength (defaults to 76) is the maximum allowed line length. Any longer line will be soft wrapped
Example
`javascript`
libqp.wrap('abc j=C3=B5geva', 10);
// abc j=\r\n
// =C3=B5geva
libqp makes it possible to encode and decode streams with libqp.Encoder and libqp.Decoder constructors.
Create new Encoder Stream with
`
const encoder = new libqp.Encoder([options])
Where
- options is the optional stream options object with an additional option lineLength if you want to use any other line length than the default 76 characters (or set to false to turn the soft wrapping off completely)
Example
The following example script reads in a file, encodes it to Quoted-Printable and saves the output to a file.
`javascript
var libqp = require('libqp');
var fs = require('fs');
var source = fs.createReadStream('source.txt');
var encoded = fs.createReadStream('encoded.txt');
var encoder = new libqp.Encoder();
source.pipe(encoder).pipe(encoded);
`
Create new Decoder Stream with
`
const decoder = new libqp.Decoder([options])
Where
- options is the optional stream options object
Example
The following example script reads in a file in Quoted-Printable encoding, decodes it and saves the output to a file.
`javascript
const libqp = require('libqp');
const fs = require('fs');
let encoded = fs.createReadStream('encoded.txt');
let dest = fs.createReadStream('dest.txt');
let decoder = new libqp.Decoder();
encoded.pipe(decoder).pipe(dest);
``
MIT