public static ZipSegmentedStream ForUpdate(string name, uint diskNumber)
{
// ForUpdate is used only when updating the zip entry metadata for
// a segmented zip file, when the starting segment is earlier
// than the ending segment, for a particular entry.
ZipSegmentedStream zss = new ZipSegmentedStream()
{
rw = 3, // 3 == update
CurrentSegment = diskNumber,
_baseName = name,
_maxSegmentSize = Int32.MaxValue // insure no rollover
};
// It's safe to assume that the update will not expand the size of the segment.
// It's an in-place update of zip metadata.
// Console.WriteLine("ZipSegmentedStream: update ({0})", name);
zss._SetUpdateStream();
return zss;
}
public static ZipSegmentedStream ForWriting(string name, int maxSegmentSize)
{
ZipSegmentedStream zss = new ZipSegmentedStream()
{
rw = 2, // 2 == write
CurrentSegment = 0,
_baseName = name,
_maxSegmentSize = maxSegmentSize,
_baseDir = Path.GetDirectoryName(name)
};
// workitem 9522
if (zss._baseDir=="") zss._baseDir=".";
zss._SetWriteStream(0);
return zss;
}
public static ZipSegmentedStream ForReading(string name, uint initialDiskNumber, uint maxDiskNumber)
{
ZipSegmentedStream zss = new ZipSegmentedStream()
{
rw = 1, // 1 == readonly
CurrentSegment = initialDiskNumber,
_maxDiskNumber = maxDiskNumber,
_baseName = name,
};
zss._SetReadStream();
return zss;
}