51 lines
1.3 KiB
Kotlin
51 lines
1.3 KiB
Kotlin
// SPDX-FileCopyrightText: 2021 David Hook <dgh@cryptoworkshop.com>
|
|
// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
|
|
//
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
package org.pgpainless.encryption_signing
|
|
|
|
import java.io.OutputStream
|
|
import org.pgpainless.algorithm.StreamEncoding
|
|
|
|
/**
|
|
* [OutputStream] which applies CR-LF encoding of its input data, based on the desired
|
|
* [StreamEncoding]. This implementation originates from the Bouncy Castle library.
|
|
*/
|
|
class CRLFGeneratorStream(private val crlfOut: OutputStream, encoding: StreamEncoding) :
|
|
OutputStream() {
|
|
|
|
private val isBinary: Boolean
|
|
private var lastB = 0
|
|
|
|
init {
|
|
isBinary = encoding == StreamEncoding.BINARY
|
|
}
|
|
|
|
override fun write(b: Int) {
|
|
if (!isBinary) {
|
|
if (b == '\n'.code && lastB != '\r'.code) { // Unix
|
|
crlfOut.write('\r'.code)
|
|
} else if (lastB == '\r'.code) { // MAC
|
|
if (b != '\n'.code) {
|
|
crlfOut.write('\n'.code)
|
|
}
|
|
}
|
|
lastB = b
|
|
}
|
|
crlfOut.write(b)
|
|
}
|
|
|
|
override fun close() {
|
|
if (!isBinary && lastB == 'r'.code) {
|
|
crlfOut.write('\n'.code)
|
|
}
|
|
crlfOut.close()
|
|
}
|
|
|
|
override fun flush() {
|
|
super.flush()
|
|
crlfOut.flush()
|
|
}
|
|
}
|