send-mail/node_modules/nodemailer/lib/mime-node/last-newline.js

34 lines
670 B
JavaScript
Raw Normal View History

2020-03-01 05:01:03 +07:00
'use strict';
const Transform = require('stream').Transform;
class LastNewline extends Transform {
constructor() {
super();
this.lastByte = false;
}
_transform(chunk, encoding, done) {
if (chunk.length) {
this.lastByte = chunk[chunk.length - 1];
}
this.push(chunk);
done();
}
_flush(done) {
if (this.lastByte === 0x0a) {
return done();
}
if (this.lastByte === 0x0d) {
this.push(Buffer.from('\n'));
return done();
}
this.push(Buffer.from('\r\n'));
return done();
}
}
module.exports = LastNewline;