foldline

Folds a long line according to the RFC 5322
Note: There are other documents, specifically the MIME documents (RFC 2045, RFC 2046, RFC 2049, RFC 4288, RFC 4289), that extend (and limit) this specification to allow for different sorts of message bodies.

Install via npm

$ npm install --save foldline

Usage

var foldLine = require( 'foldline' )

foldLine(
  {String} input,
  {Number} maxLength (optional),
  {Boolean} hardWrap (optional)
)

Example

foldLine( 'Subject: from x.y.test by example.net via TCP with ESMTP id ABC12345 for <mary@example.net>', 30 )

Subject: from x.y.test by<CR><LF>
  example.net via TCP with<CR><LF>
  ESMTP id ABC12345 for<CR><LF>
  <mary@example.net>

Tests

$ npm test

Benchmarks

$ npm run benchmark