internal static ZipIOLocalFileHeader CreateNew(string fileName, Encoding encoding, CompressionMethodEnum compressionMethod, DeflateOptionEnum deflateOption, bool streaming)
{
byte[] bytes = encoding.GetBytes(fileName);
if (bytes.Length > ZipIOBlockManager.MaxFileNameSize)
{
throw new ArgumentOutOfRangeException("fileName");
}
ZipIOLocalFileHeader header = new ZipIOLocalFileHeader();
header._signature = 0x4034b50;
header._compressionMethod = (ushort)compressionMethod;
if (streaming)
{
header._versionNeededToExtract = 0x2d;
}
else
{
header._versionNeededToExtract = (ushort)ZipIOBlockManager.CalcVersionNeededToExtractFromCompression(compressionMethod);
}
if (compressionMethod != CompressionMethodEnum.Stored)
{
header.DeflateOption = deflateOption;
}
if (streaming)
{
header.StreamingCreationFlag = true;
}
header._lastModFileDateTime = ZipIOBlockManager.ToMsDosDateTime(DateTime.Now);
header._fileNameLength = (ushort)bytes.Length;
header._fileName = bytes;
header._extraField = ZipIOExtraField.CreateNew(!streaming);
header._extraFieldLength = header._extraField.Size;
header._stringFileName = fileName;
return(header);
}
public void UpdateReferences(bool closingFlag)
{
Invariant.Assert(!this._blockManager.Streaming);
this.CheckDisposed();
if (closingFlag)
{
this.CloseExposedStreams();
}
else
{
this.FlushExposedStreams();
}
if (this.GetDirtyFlag(closingFlag))
{
long size = this._localFileHeader.Size;
long length = this._crcCalculatingStream.Length;
this._localFileHeader.Crc32 = this._crcCalculatingStream.CalculateCrc();
if (closingFlag)
{
this._crcCalculatingStream.Close();
if (this._deflateStream != null)
{
this._deflateStream.Close();
}
}
if (this._fileItemStream.DataChanged)
{
this._localFileHeader.LastModFileDateTime = ZipIOBlockManager.ToMsDosDateTime(DateTime.Now);
}
long compressedSize = this._fileItemStream.Length;
this._localFileHeader.UpdateZip64Structures(compressedSize, length, this.Offset);
this._localFileHeader.UpdatePadding(this._localFileHeader.Size - size);
this._localFileHeader.StreamingCreationFlag = false;
this._localFileDataDescriptor = null;
this._fileItemStream.Move((this.Offset + this._localFileHeader.Size) - this._fileItemStream.Offset);
this._dirtyFlag = true;
}
}
