protected BaseOperation(OperationParameters parameters, int threadsLimit)
{
this.threadsLimit = threadsLimit;
br = new BinaryReader(new FileStream(parameters.SourceFile, FileMode.Open, FileAccess.Read, FileShare.None));
bw = new BinaryWriter(new FileStream(parameters.DestinationFile, FileMode.Create, FileAccess.Write, FileShare.None));
}
public Compression(OperationParameters parameters, int threadsLimit) : base(parameters, threadsLimit)
{
FileInformation = new FileInformation(parameters.SourceFile);
bw.Write(BitConverter.GetBytes(FileInformation.InitialLength));
bw.Write(BitConverter.GetBytes(FileInformation.BlockCount));
}
public Decompression(OperationParameters parameters, int threadsLimit) : base(parameters, threadsLimit)
{
long initialLength = br.ReadInt64();
long blockCount = br.ReadInt64();
FileInformation = new FileInformation(initialLength, blockCount);
CheckDiskSpace(parameters.DestinationFile);
}
private static int Main(string[] args)
{
ShowInfo();
AddUnhandledExceptionHandler();
#if DEBUG
args = new[] {
"decompress",
"D:/Downloads/TorrentDownloads/234.gz",
"D:/Downloads/TorrentDownloads/234.zip"
};
#endif
IReadOnlyList <string> errors = ValidationInput.ValidateInput(args);
if (errors.Any())
{
string errorOutput = string.Join("\n", errors);
Console.WriteLine(errorOutput);
return(Constants.ErrorExitCode);
}
string stringOperationType = args[0];
string sourceFile = args[1];
string destinationFile = args[2];
var operationParameters = new OperationParameters(sourceFile, destinationFile, stringOperationType);
try {
OperationType operationType = new StringToOperationTypeConverter().GetOperationType(operationParameters.Type.ToLower());
int threadsLimit = Environment.ProcessorCount;
BaseOperation operation;
switch (operationType)
{
case OperationType.Compress:
operation = new Compression(operationParameters, threadsLimit);
break;
case OperationType.Decompress:
operation = new Decompression(operationParameters, threadsLimit);
break;
default:
throw new ArgumentOutOfRangeException(nameof(operationType));
}
return(operation.Start());
} catch (System.Exception ex) {
Console.Error.WriteLine(ex.Message);
return(Constants.ErrorExitCode);
}
}
