private void TestRandomWriteOperation(FileStream targetStream, AlignedWriteStream writeStream,
byte[] data, int offset, int count)
{
long possition = targetStream.Position;
long length = targetStream.Length;
targetStream.Write(data, offset, count);
writeStream.Write(data, offset, count);
Assert.AreEqual(targetStream.Position, writeStream.Position, string.Format("Position mismatch (Original {0})", possition));
Assert.AreEqual(targetStream.Length, writeStream.Length, string.Format("Length mismatch (Original {0})", length));
}
private void TestWriteStreamRandomOperations(int count, string inputfile, string outputfile1, string outputfile2, int alignmentSize,
Func<FileStream, AlignedWriteStream, byte[], WriteSreamOperations> testOperation)
{
byte[] data = File.ReadAllBytes(inputfile);
List<Tuple<WriteSreamOperations, long, long, long, long, long, long>> operations =
new List<Tuple<WriteSreamOperations, long, long, long, long, long, long>>();
using (FileStream targetFileStream1 = new FileStream(outputfile1, FileMode.Create, FileAccess.Write, FileShare.ReadWrite))
{
using (FileStream targetFileStream2 = new FileStream(outputfile2, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite, 8,
FileOptions.WriteThrough | Win32.FileFlagNoBuffering))
{
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream2, alignmentSize))
{
while (0 < count)
{
long position = targetFileStream1.Position;
long length = targetFileStream1.Length;
WriteSreamOperations operation = testOperation(targetFileStream1, writeStream, data);
targetFileStream1.Flush();
byte[] data1 = this.ReadFile(outputfile1);
byte[] data2 = this.ReadFile(outputfile2);
if (Math.Abs(data1.Length - data2.Length) > alignmentSize * 2)
{
writeStream.Flush();
data2 = this.ReadFile(outputfile2);
}
Assert.IsTrue(Math.Abs(data1.Length - data2.Length) < alignmentSize*2, "Length mismatch");
int i = 0;
if (data1.Length < data2.Length)
{
i = this.FindNoneZero(data2, data1.Length);
Assert.IsTrue(-1 == i, "Junk found");
}
i = this.CompareBuffers(data1, data2, 0, Math.Min(data1.Length, data2.Length));
if (-1 != i)
{
writeStream.Flush();
data2 = this.ReadFile(outputfile2);
if (data1.Length < data2.Length)
{
i = this.FindNoneZero(data2, data1.Length);
Assert.IsTrue(-1 == i, "Junk found");
}
i = this.CompareBuffers(data1, data2, 0, Math.Min(data1.Length, data2.Length));
Assert.IsTrue(-1 == i, "Data mismatch");
}
count--;
operations.Add(new Tuple<WriteSreamOperations, long, long, long, long, long, long>(
operation, position, length, targetFileStream1.Position, targetFileStream1.Length,
targetFileStream2.Position, targetFileStream2.Length));
}
}
}
}
byte[] fdata1 = this.ReadFile(outputfile1);
byte[] fdata2 = this.ReadFile(outputfile2);
Assert.IsTrue(Math.Abs(fdata1.Length - fdata2.Length) < alignmentSize * 2, "Length mismatch");
Assert.IsTrue(-1 == this.CompareBuffers(fdata1, fdata2, 0, fdata1.Length), "Data mismatch");
}
private void TestRandomSetLengthOperation(FileStream targetStream, AlignedWriteStream writeStream, long length)
{
long position = targetStream.Position;
targetStream.SetLength(length);
writeStream.SetLength(length);
Assert.AreEqual(targetStream.Position, writeStream.Position, string.Format("Position mismatch (Original: {0})", position));
Assert.AreEqual(targetStream.Length, writeStream.Length, "Length mismatch");
}
private WriteSreamOperations TestRandomWriteOperation(FileStream targetStream, AlignedWriteStream writeStream, byte[] data)
{
int offsetUpperBound = data.Length;
int offset = Random.Next(offsetUpperBound);
if (0 == Random.Next(2))
{
offset -= (offset % writeStream.AlignmentSize);
}
int countUpperBound = Math.Min((int)(data.Length - targetStream.Position), data.Length - offset);
int count = Random.Next(countUpperBound);
if (0 == Random.Next(2))
{
count -= (count % writeStream.AlignmentSize);
}
this.TestRandomWriteOperation(targetStream, writeStream, data, offset, count);
return WriteSreamOperations.Write;
}
private WriteSreamOperations TestRandomOperation(FileStream targetStream, AlignedWriteStream writeStream, byte[] data)
{
WriteSreamOperations operation = (WriteSreamOperations)Random.Next((int)WriteSreamOperations.Count);
switch (operation)
{
case WriteSreamOperations.SetLength:
this.TestRandomSetLengthOperation(targetStream, writeStream, data);
break;
case WriteSreamOperations.Write:
this.TestRandomWriteOperation(targetStream, writeStream, data);
break;
case WriteSreamOperations.Seek:
this.TestRandomSeekOperation(writeStream, targetStream, data.Length);
break;
case WriteSreamOperations.Flush:
this.TestRandomFlushOperation(writeStream, targetStream);
break;
default:
Assert.Fail("Invalid operation");
break;
}
return operation;
}
private void TestRandomSetLengthOperation(FileStream targetStream, AlignedWriteStream writeStream, byte[] data)
{
int lengthUpperBound = (int)data.Length;
int length = Random.Next(lengthUpperBound);
if (0 == Random.Next(2))
{
length -= (length % writeStream.AlignmentSize);
}
this.TestRandomSetLengthOperation(targetStream, writeStream, length);
}
private void TestAlignedWriteStreamWritePosition(string targetFilename)
{
var buffer = new byte[1024];
using (FileStream targetFileStream = new FileStream(targetFilename, FileMode.Create, FileAccess.Write, FileShare.Write, 8,
FileOptions.WriteThrough | Win32.FileFlagNoBuffering))
{
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream))
{
writeStream.Write(buffer, 0, 500);
Assert.AreEqual(500, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(500, writeStream.Length, "Invlid length");
Assert.AreEqual(0, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 500, 524);
Assert.AreEqual(1024, writeStream.Position, "Invlid position");
Assert.AreEqual(writeStream.Position, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1024, writeStream.Length, "Invlid length");
Assert.AreEqual(writeStream.Length, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 19, 512);
Assert.AreEqual(1536, writeStream.Position, "Invlid position");
Assert.AreEqual(writeStream.Position, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1536, writeStream.Length, "Invlid length");
Assert.AreEqual(writeStream.Length, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 0, 1000);
Assert.AreEqual(2536, writeStream.Position, "Invlid position");
Assert.AreEqual(2048, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2536, writeStream.Length, "Invlid length");
Assert.AreEqual(2048, targetFileStream.Length, "Invlid length");
}
Assert.AreEqual(2560, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2560, targetFileStream.Length, "Invlid position");
}
}
private void TestRandomFlushOperation(AlignedWriteStream writeStream, FileStream targetStream)
{
writeStream.Flush();
targetStream.Flush();
Assert.AreEqual(targetStream.Position, writeStream.Position, "Position mismatch");
Assert.AreEqual(targetStream.Length, writeStream.Length, "Length mismatch");
}
private void TestAlignedWriteStreamSeekPosition(string targetFilename)
{
var buffer = new byte[1024];
using (FileStream targetFileStream = new FileStream(targetFilename, FileMode.Create, FileAccess.ReadWrite, FileShare.Write, 8,
FileOptions.WriteThrough | Win32.FileFlagNoBuffering))
{
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream))
{
writeStream.Write(buffer, 0, 500);
Assert.AreEqual(500, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(500, writeStream.Length, "Invlid length");
Assert.AreEqual(0, targetFileStream.Length, "Invlid length");
writeStream.Seek(400, SeekOrigin.Begin);
Assert.AreEqual(400, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(500, writeStream.Length, "Invlid length");
Assert.AreEqual(0, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 0, 650);
Assert.AreEqual(1050, writeStream.Position, "Invlid position");
Assert.AreEqual(1024, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1050, writeStream.Length, "Invlid length");
Assert.AreEqual(1024, targetFileStream.Length, "Invlid length");
writeStream.Seek(1000, SeekOrigin.Begin);
Assert.AreEqual(1000, writeStream.Position, "Invlid position");
Assert.AreEqual(512, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1050, writeStream.Length, "Invlid length");
Assert.AreEqual(1536, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 19, 24);
Assert.AreEqual(1024, writeStream.Position, "Invlid position");
Assert.AreEqual(writeStream.Position, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1050, writeStream.Length, "Invlid length");
Assert.AreEqual(1536, targetFileStream.Length, "Invlid length");
writeStream.Seek(12, SeekOrigin.Begin);
Assert.AreEqual(12, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1050, writeStream.Length, "Invlid length");
Assert.AreEqual(1536, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 19, 500);
Assert.AreEqual(512, writeStream.Position, "Invlid position");
Assert.AreEqual(writeStream.Position, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1050, writeStream.Length, "Invlid length");
Assert.AreEqual(1536, targetFileStream.Length, "Invlid length");
writeStream.Seek(-2, SeekOrigin.End);
Assert.AreEqual(1048, writeStream.Position, "Invlid position");
Assert.AreEqual(1024, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1050, writeStream.Length, "Invlid length");
Assert.AreEqual(1536, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 0, 1000);
Assert.AreEqual(2048, writeStream.Position, "Invlid position");
Assert.AreEqual(2048, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2048, writeStream.Length, "Invlid length");
Assert.AreEqual(writeStream.Length, targetFileStream.Length, "Invlid length");
writeStream.Seek(-1000, SeekOrigin.Current);
Assert.AreEqual(1048, writeStream.Position, "Invlid position");
Assert.AreEqual(1024, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2048, writeStream.Length, "Invlid length");
Assert.AreEqual(writeStream.Length, targetFileStream.Length, "Invlid length");
writeStream.Seek(0, SeekOrigin.End);
Assert.AreEqual(2048, writeStream.Position, "Invlid position");
Assert.AreEqual(2048, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2048, writeStream.Length, "Invlid length");
Assert.AreEqual(writeStream.Length, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 11, 2);
Assert.AreEqual(2050, writeStream.Position, "Invlid position");
Assert.AreEqual(2048, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2050, writeStream.Length, "Invlid length");
Assert.AreEqual(2048, targetFileStream.Length, "Invlid length");
writeStream.Seek(4000, SeekOrigin.Begin);
Assert.AreEqual(4000, writeStream.Position, "Invlid position");
Assert.AreEqual(3584, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2050, writeStream.Length, "Invlid length");
Assert.AreEqual(2560, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 40, 95);
Assert.AreEqual(4095, writeStream.Position, "Invlid position");
Assert.AreEqual(3584, targetFileStream.Position, "Invlid position");
Assert.AreEqual(4095, writeStream.Length, "Invlid length");
Assert.AreEqual(2560, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 40, 1);
Assert.AreEqual(4096, writeStream.Position, "Invlid position");
Assert.AreEqual(4096, targetFileStream.Position, "Invlid position");
Assert.AreEqual(4096, writeStream.Length, "Invlid length");
Assert.AreEqual(4096, targetFileStream.Length, "Invlid length");
}
Assert.AreEqual(4096, targetFileStream.Position, "Invlid position");
Assert.AreEqual(4096, targetFileStream.Length, "Invlid length");
}
}
private void TestAlignedWriteStreamLength(string targetFilename)
{
var buffer = new byte[1024];
using (FileStream targetFileStream = new FileStream(targetFilename, FileMode.Create, FileAccess.ReadWrite, FileShare.Write, 8,
FileOptions.WriteThrough | Win32.FileFlagNoBuffering))
{
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream))
{
writeStream.Write(buffer, 0, 1000);
Assert.AreEqual(1000, writeStream.Position, "Invlid position");
Assert.AreEqual(512, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1000, writeStream.Length, "Invlid length");
Assert.AreEqual(512, targetFileStream.Length, "Invlid length");
writeStream.SetLength(1024);
Assert.AreEqual(1000, writeStream.Position, "Invlid position");
Assert.AreEqual(512, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1024, writeStream.Length, "Invlid length");
Assert.AreEqual(1024, targetFileStream.Length, "Invlid length");
writeStream.SetLength(512);
Assert.AreEqual(512, writeStream.Position, "Invlid position");
Assert.AreEqual(512, targetFileStream.Position, "Invlid position");
Assert.AreEqual(512, writeStream.Length, "Invlid length");
Assert.AreEqual(512, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 0, 1000);
Assert.AreEqual(1512, writeStream.Position, "Invlid position");
Assert.AreEqual(1024, targetFileStream.Position, "Invlid position");
Assert.AreEqual(1512, writeStream.Length, "Invlid length");
Assert.AreEqual(1024, targetFileStream.Length, "Invlid length");
writeStream.SetLength(2048);
Assert.AreEqual(1512, writeStream.Position, "Invlid position");
Assert.AreEqual(1024, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2048, writeStream.Length, "Invlid length");
Assert.AreEqual(2048, targetFileStream.Length, "Invlid length");
writeStream.Write(buffer, 345, 38);
Assert.AreEqual(1550, writeStream.Position, "Invlid position");
Assert.AreEqual(1536, targetFileStream.Position, "Invlid position");
Assert.AreEqual(2048, writeStream.Length, "Invlid length");
Assert.AreEqual(2048, targetFileStream.Length, "Invlid length");
writeStream.SetLength(0);
Assert.AreEqual(0, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(0, writeStream.Length, "Invlid length");
Assert.AreEqual(0, targetFileStream.Length, "Invlid length");
writeStream.Flush();
Assert.AreEqual(0, writeStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(0, writeStream.Length, "Invlid length");
Assert.AreEqual(0, targetFileStream.Length, "Invlid length");
}
Assert.AreEqual(0, targetFileStream.Position, "Invlid position");
Assert.AreEqual(0, targetFileStream.Length, "Invlid position");
}
}
protected void Decompress(SevenZipExtractor extractor, FileStream targetFileStream,
int bufferSize, int preallocationPercent)
{
decimal preallocationSize = (((decimal)extractor.PackedSize * preallocationPercent) / 100);
preallocationSize -= preallocationSize % this._sectorSize;
if (targetFileStream.Length < preallocationSize)
{
targetFileStream.SetLength((long)preallocationSize);
}
long decompressedLength = 0;
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream, bufferSize))
{
extractor.ExtractFile(0, writeStream);
decompressedLength = writeStream.Length;
}
if (targetFileStream.Length != decompressedLength)
{
this.SetFileLength(targetFileStream.SafeFileHandle, decompressedLength);
}
}
protected long Compress(SevenZipCompressor compressor, AlignedReadStream readStream, AlignedWriteStream writeStream,
string password)
{
using (MaxPositionStream maxWriteStream = new MaxPositionStream(writeStream))
{
if (string.IsNullOrEmpty(password))
{
compressor.CompressStream(readStream, maxWriteStream);
}
else
{
compressor.CompressStream(readStream, maxWriteStream, password);
}
return maxWriteStream.MaxPosition;
}
}
protected void Compress(SevenZipCompressor compressor, FileStream sourceFileStream, FileStream targetFileStream,
string password, int preallocationPercent, bool check, int bufferSize)
{
using (AlignedReadStream readStream = new AlignedReadStream(sourceFileStream, bufferSize))
{
decimal preallocationSize = (((decimal)readStream.Length * preallocationPercent) / 100);
preallocationSize -= preallocationSize % this._sectorSize;
if (targetFileStream.Length < preallocationSize)
{
targetFileStream.SetLength((long)preallocationSize);
}
long compressedLength = 0;
using (AlignedWriteStream writeStream = new AlignedWriteStream(targetFileStream, bufferSize))
{
compressedLength = this.Compress(compressor, readStream, writeStream, password);
}
if (targetFileStream.Length != compressedLength)
{
this.SetFileLength(targetFileStream.SafeFileHandle, compressedLength);
}
if (check)
{
this.Check(targetFileStream.SafeFileHandle, password, bufferSize);
}
}
}
