private void MapBlock(IZipIOBlock block)
{
for (int i = this._blockList.Count - 1; i >= 0; i--)
{
ZipIORawDataFileBlock block2 = this._blockList[i] as ZipIORawDataFileBlock;
if ((block2 != null) && block2.DiskImageContains(block))
{
ZipIORawDataFileBlock block3;
ZipIORawDataFileBlock block4;
block2.SplitIntoPrefixSuffix(block, out block4, out block3);
this._blockList.RemoveAt(i);
if (block3 != null)
{
this._blockList.Insert(i, block3);
}
this._blockList.Insert(i, block);
if (block4 != null)
{
this._blockList.Insert(i, block4);
}
return;
}
}
throw new FileFormatException(SR.Get("CorruptedData"));
}
public void UpdateReferences(bool closingFlag)
{
foreach (IZipIOBlock block3 in (IEnumerable)this._blockManager)
{
ZipIOLocalFileBlock fileBlock = block3 as ZipIOLocalFileBlock;
ZipIORawDataFileBlock block = block3 as ZipIORawDataFileBlock;
if (fileBlock != null)
{
ZipIOCentralDirectoryFileHeader header2 = (ZipIOCentralDirectoryFileHeader)this.CentralDirectoryDictionary[fileBlock.FileName];
if (header2.UpdateIfNeeded(fileBlock))
{
this._dirtyFlag = true;
}
}
else if (block != null)
{
long diskImageShift = block.DiskImageShift;
if (diskImageShift != 0L)
{
foreach (ZipIOCentralDirectoryFileHeader header in this.CentralDirectoryDictionary.Values)
{
if (block.DiskImageContains(header.OffsetOfLocalHeader))
{
header.MoveReference(diskImageShift);
this._dirtyFlag = true;
}
}
continue;
}
}
}
}
// Methods
internal ZipIOBlockManager(Stream archiveStream, bool streaming, bool ownStream)
{
this._archiveStream = archiveStream;
this._openStreaming = streaming;
this._ownStream = ownStream;
if (streaming)
{
this._archiveStream = new WriteTimeStream(this._archiveStream);
}
else if (archiveStream.Length > 0L)
{
ZipIORawDataFileBlock block = ZipIORawDataFileBlock.Assign(this, 0L, archiveStream.Length);
this._blockList.Add(block);
}
}
internal static ZipIORawDataFileBlock Assign(ZipIOBlockManager blockManager, long offset, long size)
{
if (size <= 0L)
{
throw new ArgumentOutOfRangeException("size");
}
if (offset < 0L)
{
throw new ArgumentOutOfRangeException("offset");
}
ZipIORawDataFileBlock block = new ZipIORawDataFileBlock(blockManager);
block._persistedOffset = offset;
block._offset = offset;
block._size = size;
return(block);
}
internal void SplitIntoPrefixSuffix(IZipIOBlock block, out ZipIORawDataFileBlock prefixBlock, out ZipIORawDataFileBlock suffixBlock)
{
prefixBlock = null;
suffixBlock = null;
if (block.Offset > this._persistedOffset)
{
long offset = this._persistedOffset;
long size = block.Offset - this._persistedOffset;
prefixBlock = Assign(this._blockManager, offset, size);
}
if ((block.Offset + block.Size) < (this._persistedOffset + this._size))
{
long num = block.Offset + block.Size;
long num2 = (this._persistedOffset + this._size) - num;
suffixBlock = Assign(this._blockManager, num, num2);
}
}
