public void Unarchive()
{
using (var inputStream = new FileStream(SourcePath, FileMode.Open, FileAccess.Read))
{
using (var tempStream = new FileStream(SourcePath + ".tmp", FileMode.Create, FileAccess.ReadWrite))
{
Compressor.GzipDecompress(inputStream, tempStream);
tempStream.Seek(0, SeekOrigin.Begin);
var header = new ArchiveEntityHeader();
header.ReadStream(tempStream);
for (int i = 0; i < header.Length; i++)
{
var archiveFile = new ArchiveFile();
archiveFile.ReadHeader(tempStream);
archiveFile.AbsolutePath = Path.Combine(TargetPath, archiveFile.RelativePath);
ArchiveItems.Add(archiveFile);
}
ArchiveItems.ForEach(x => x.ReadContent(tempStream));
}
File.Delete(SourcePath + ".tmp");
}
}
public void Archive()
{
using (var tempStream = new FileStream(TargetPath + ".tmp", FileMode.Create, FileAccess.ReadWrite))
{
var fileHeader = new ArchiveEntityHeader()
{
RelativePath = "",
Length = ArchiveItems.Sum(x => x.GetFiles()),
HashValue = "",
};
fileHeader.WriteStream(tempStream);
ArchiveItems.ForEach(x => x.WriteHeader(tempStream));
ArchiveItems.ForEach(x => x.WriteContent(tempStream));
tempStream.Seek(0, SeekOrigin.Begin);
using (var outputStream = new FileStream(TargetPath, FileMode.Create, FileAccess.Write))
{
Compressor.GzipCompress(tempStream, outputStream);
}
}
File.Delete(TargetPath + ".tmp");
}
public override void ReadHeader(Stream inputStream)
{
var header = new ArchiveEntityHeader();
header.ReadStream(inputStream);
RelativePath = header.RelativePath;
Length = header.Length;
HashValue = header.HashValue;
}
public override void WriteHeader(Stream outputStream)
{
var header = new ArchiveEntityHeader()
{
RelativePath = RelativePath,
Length = Length,
HashValue = ToHexString(HashCalculator.Compute(HashCalculator.Algorithm.Sha1, AbsolutePath)),
};
header.WriteStream(outputStream);
}
