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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
#if os(OSX) || os(iOS) || os(watchOS) || os(tvOS)
import Darwin
#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android)
import Glibc
#endif
/// TFileTransport
/// Foundation-less Swift File transport.
/// Uses C fopen/fread/fwrite,
/// provided by Glibc in linux and Darwin on OSX/iOS
public class TFileTransport: TTransport {
var fileHandle: UnsafeMutablePointer<FILE>? = nil
public init (fileHandle: UnsafeMutablePointer<FILE>) {
self.fileHandle = fileHandle
}
public convenience init(filename: String) throws {
var fileHandle: UnsafeMutablePointer<FILE>?
filename.withCString({ cFilename in
"rw".withCString({ cMode in
fileHandle = fopen(cFilename, cMode)
})
})
if let fileHandle = fileHandle {
self.init(fileHandle: fileHandle)
} else {
throw TTransportError(error: .notOpen)
}
}
deinit {
fclose(self.fileHandle)
}
public func readAll(size: Int) throws -> Data {
let read = try self.read(size: size)
if read.count != size {
throw TTransportError(error: .endOfFile)
}
return read
}
public func read(size: Int) throws -> Data {
// set up read buffer, position 0
var read = Data(capacity: size)
var position = 0
// read character buffer
var nextChar: UInt8 = 0
// continue until we've read size bytes
while read.count < size {
if fread(&nextChar, 1, 1, self.fileHandle) == 1 {
read[position] = nextChar
// Increment output byte pointer
position += 1
} else {
throw TTransportError(error: .endOfFile)
}
}
return read
}
public func write(data: Data) throws {
let bytesWritten = data.withUnsafeBytes {
fwrite($0, 1, data.count, self.fileHandle)
}
if bytesWritten != data.count {
throw TTransportError(error: .unknown)
}
}
public func flush() throws {
return
}
}
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