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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import Foundation
public class TMemoryBufferTransport : TTransport {
public private(set) var readBuffer = Data()
public private(set) var writeBuffer = Data()
public private(set) var position = 0
public var bytesRemainingInBuffer: Int {
return readBuffer.count - position
}
public func consumeBuffer(size: Int) {
position += size
}
public func clear() {
readBuffer = Data()
writeBuffer = Data()
}
private var flushHandler: ((TMemoryBufferTransport, Data) -> ())?
public init(flushHandler: ((TMemoryBufferTransport, Data) -> ())? = nil) {
self.flushHandler = flushHandler
}
public convenience init(readBuffer: Data, flushHandler: ((TMemoryBufferTransport, Data) -> ())? = nil) {
self.init()
self.readBuffer = readBuffer
}
public func reset(readBuffer: Data = Data(), writeBuffer: Data = Data()) {
self.readBuffer = readBuffer
self.writeBuffer = writeBuffer
}
public func read(size: Int) throws -> Data {
let amountToRead = min(bytesRemainingInBuffer, size)
if amountToRead > 0 {
let ret = readBuffer.subdata(in: Range(uncheckedBounds: (lower: position, upper: position + amountToRead)))
position += ret.count
return ret
}
return Data()
}
public func write(data: Data) throws {
writeBuffer.append(data)
}
public func flush() throws {
flushHandler?(self, writeBuffer)
}
}
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