io.gatling.core.feeder.Utf8BomSkipReadableByteChannel.scala Maven / Gradle / Ivy
/*
* Copyright 2011-2024 GatlingCorp (https://gatling.io)
*
* 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 io.gatling.core.feeder
import java.nio.ByteBuffer
import java.nio.channels.ReadableByteChannel
private object Utf8BomSkipReadableByteChannel {
val Utf8BomByte1: Byte = 0xef.toByte
val Utf8BomByte2: Byte = 0xbb.toByte
val Utf8BomByte3: Byte = 0xbf.toByte
}
private class Utf8BomSkipReadableByteChannel(channel: ReadableByteChannel) extends ReadableByteChannel {
import Utf8BomSkipReadableByteChannel._
private val first3Bytes = {
val bb = ByteBuffer.allocate(3)
channel.read(bb)
bb.flip()
bb
}
private val hasBom =
first3Bytes.remaining >= 3 &&
first3Bytes.get(0) == Utf8BomByte1 &&
first3Bytes.get(1) == Utf8BomByte2 &&
first3Bytes.get(2) == Utf8BomByte3
override def read(dst: ByteBuffer): Int =
if (hasBom || !first3Bytes.hasRemaining) {
channel.read(dst)
} else {
dst.put(first3Bytes)
first3Bytes.position + channel.read(dst)
}
override def close(): Unit = channel.close()
override def isOpen(): Boolean = channel.isOpen()
}