org.jetbrains.kotlin.incremental.snapshots.hashUtil.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2016 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.incremental.snapshots
import java.io.File
import java.security.MessageDigest
internal val File.md5: ByteArray
get() {
val messageDigest = MessageDigest.getInstance("MD5")
val buffer = ByteArray(4048)
inputStream().use { input ->
while (true) {
val len = input.read(buffer)
if (len < 0) {
break
}
messageDigest.update(buffer, 0, len)
}
}
return messageDigest.digest()
}