public void AddFirst(DataBlock block)
{
if (_firstBlock == null)
AddBlockToEmptyMap(block);
else
AddBeforeInternal(_firstBlock, block);
}
public void AddLast(DataBlock block)
{
if (_firstBlock == null)
AddBlockToEmptyMap(block);
else
AddAfterInternal(GetLastBlock(), block);
}
private void AddAfterInternal(DataBlock block, DataBlock newBlock) {
newBlock.PreviousBlock = block;
newBlock.NextBlock = block.NextBlock;
newBlock.Map = this;
if (block.NextBlock != null)
block.NextBlock.PreviousBlock = newBlock;
block.NextBlock = newBlock;
Version++;
Count++;
}
public void Clear() {
var block = FirstBlock;
while (block != null) {
var nextBlock = block.NextBlock;
InvalidateBlock(block);
block = nextBlock;
}
FirstBlock = null;
Count = 0;
Version++;
}
public bool MoveNext()
{
if (_index >= _map.Count)
{
return false;
}
if (++_index == 0)
{
_current = null;
}
else
{
_current = null;
}
return (_index < _map.Count);
}
public void AddBefore(DataBlock block, DataBlock newBlock)
{
AddBeforeInternal(block, newBlock);
}
public void Remove(DataBlock block)
{
RemoveInternal(block);
}
void InvalidateBlock(DataBlock block)
{
block._map = null;
block._nextBlock = null;
block._previousBlock = null;
}
public bool MoveNext()
{
if (this._version != _map._version)
{
throw new InvalidOperationException("Collection was modified after the enumerator was instantiated.");
}
if (_index >= _map.Count)
{
return false;
}
if (++_index == 0)
{
_current = _map.FirstBlock;
}
else
{
_current = _current.NextBlock;
}
return (_index < _map.Count);
}
public void AddAfter(DataBlock block, DataBlock newBlock)
{
AddAfterInternal(block, newBlock);
}
void RemoveInternal(DataBlock block)
{
DataBlock previousBlock = block._previousBlock;
DataBlock nextBlock = block._nextBlock;
if (previousBlock != null)
{
previousBlock._nextBlock = nextBlock;
}
if (nextBlock != null)
{
nextBlock._previousBlock = previousBlock;
}
if (_firstBlock == block)
{
_firstBlock = nextBlock;
}
InvalidateBlock(block);
_count--;
_version++;
}
void AddBlockToEmptyMap(DataBlock block)
{
block._map = this;
block._nextBlock = null;
block._previousBlock = null;
_firstBlock = block;
_version++;
_count++;
}
private static void InvalidateBlock(DataBlock block)
{
block.Map = null;
block.NextBlock = null;
block.PreviousBlock = null;
}
void AddAfterInternal(DataBlock block, DataBlock newBlock)
{
newBlock._previousBlock = block;
newBlock._nextBlock = block._nextBlock;
newBlock._map = this;
if (block._nextBlock != null)
{
block._nextBlock._previousBlock = newBlock;
}
block._nextBlock = newBlock;
this._version++;
this._count++;
}
private void RemoveInternal(DataBlock block) {
var previousBlock = block.PreviousBlock;
var nextBlock = block.NextBlock;
if (previousBlock != null)
previousBlock.NextBlock = nextBlock;
if (nextBlock != null)
nextBlock.PreviousBlock = previousBlock;
if (FirstBlock == block)
FirstBlock = nextBlock;
InvalidateBlock(block);
Count--;
Version++;
}
void IEnumerator.Reset() {
if (_version != _map.Version)
throw new InvalidOperationException("Collection was modified after the enumerator was instantiated.");
_index = -1;
_current = null;
}
public bool MoveNext() {
if (_version != _map.Version)
throw new InvalidOperationException("Collection was modified after the enumerator was instantiated.");
if (_index >= _map.Count)
return false;
_current = ++_index == 0 ? _map.FirstBlock : _current.NextBlock;
return (_index < _map.Count);
}
private void AddBlockToEmptyMap(DataBlock block) {
block.Map = this;
block.NextBlock = null;
block.PreviousBlock = null;
FirstBlock = block;
Version++;
Count++;
}
private static void InvalidateBlock(DataBlock block) {
block.Map = null;
block.NextBlock = null;
block.PreviousBlock = null;
}
public void Clear()
{
DataBlock block = FirstBlock;
while (block != null)
{
DataBlock nextBlock = block.NextBlock;
InvalidateBlock(block);
block = nextBlock;
}
_firstBlock = null;
_count = 0;
_version++;
}
void IEnumerator.Reset()
{
_index = -1;
_current = null;
}
void AddBeforeInternal(DataBlock block, DataBlock newBlock)
{
newBlock._nextBlock = block;
newBlock._previousBlock = block._previousBlock;
newBlock._map = this;
if (block._previousBlock != null)
{
block._previousBlock._nextBlock = newBlock;
}
block._previousBlock = newBlock;
if (_firstBlock == block)
{
_firstBlock = newBlock;
}
this._version++;
this._count++;
}
// Token: 0x06000369 RID: 873 RVA: 0x000122D4 File Offset: 0x000104D4
public void WriteByte(long index, byte value)
{
try
{
long num;
DataBlock dataBlock = this.GetDataBlock(index, out num);
MemoryDataBlock memoryDataBlock = dataBlock as MemoryDataBlock;
if (memoryDataBlock != null)
{
memoryDataBlock.Data[(int)(checked ((IntPtr)(unchecked (index - num))))] = value;
}
else
{
FileDataBlock fileDataBlock = (FileDataBlock)dataBlock;
if (num == index && dataBlock.PreviousBlock != null)
{
MemoryDataBlock memoryDataBlock2 = dataBlock.PreviousBlock as MemoryDataBlock;
if (memoryDataBlock2 != null)
{
memoryDataBlock2.AddByteToEnd(value);
fileDataBlock.RemoveBytesFromStart(1L);
if (fileDataBlock.Length == 0L)
{
this._dataMap.Remove(fileDataBlock);
}
return;
}
}
if (num + fileDataBlock.Length - 1L == index && dataBlock.NextBlock != null)
{
MemoryDataBlock memoryDataBlock3 = dataBlock.NextBlock as MemoryDataBlock;
if (memoryDataBlock3 != null)
{
memoryDataBlock3.AddByteToStart(value);
fileDataBlock.RemoveBytesFromEnd(1L);
if (fileDataBlock.Length == 0L)
{
this._dataMap.Remove(fileDataBlock);
}
return;
}
}
FileDataBlock fileDataBlock2 = null;
if (index > num)
{
fileDataBlock2 = new FileDataBlock(fileDataBlock.FileOffset, index - num);
}
FileDataBlock fileDataBlock3 = null;
if (index < num + fileDataBlock.Length - 1L)
{
fileDataBlock3 = new FileDataBlock(fileDataBlock.FileOffset + index - num + 1L, fileDataBlock.Length - (index - num + 1L));
}
dataBlock = this._dataMap.Replace(dataBlock, new MemoryDataBlock(value));
if (fileDataBlock2 != null)
{
this._dataMap.AddBefore(dataBlock, fileDataBlock2);
}
if (fileDataBlock3 != null)
{
this._dataMap.AddAfter(dataBlock, fileDataBlock3);
}
}
}
finally
{
this.OnChanged(EventArgs.Empty);
}
}
void InvalidateBlock(DataBlock block)
{
block._map = null;
block._nextBlock = null;
block._previousBlock = null;
}
void IEnumerator.Reset()
{
this._index = -1;
this._current = null;
}
internal Enumerator(DataMap map)
{
_map = map;
_version = map._version;
_current = null;
_index = -1;
}
/// <summary>
/// See <see cref="IByteProvider.WriteByte" /> for more information.
/// </summary>
public void WriteByte(long index, byte value)
{
try
{
// Find the block affected.
long blockOffset;
DataBlock block = GetDataBlock(index, out blockOffset);
// If the byte is already in a memory block, modify it.
MemoryDataBlock memoryBlock = block as MemoryDataBlock;
if (memoryBlock != null)
{
memoryBlock.Data[index - blockOffset] = value;
return;
}
FileDataBlock fileBlock = (FileDataBlock)block;
// If the byte changing is the first byte in the block and the previous block is a memory block, extend that.
if (blockOffset == index && block.PreviousBlock != null)
{
MemoryDataBlock previousMemoryBlock = block.PreviousBlock as MemoryDataBlock;
if (previousMemoryBlock != null)
{
previousMemoryBlock.AddByteToEnd(value);
fileBlock.RemoveBytesFromStart(1);
if (fileBlock.Length == 0)
{
_dataMap.Remove(fileBlock);
}
return;
}
}
// If the byte changing is the last byte in the block and the next block is a memory block, extend that.
if (blockOffset + fileBlock.Length - 1 == index && block.NextBlock != null)
{
MemoryDataBlock nextMemoryBlock = block.NextBlock as MemoryDataBlock;
if (nextMemoryBlock != null)
{
nextMemoryBlock.AddByteToStart(value);
fileBlock.RemoveBytesFromEnd(1);
if (fileBlock.Length == 0)
{
_dataMap.Remove(fileBlock);
}
return;
}
}
// Split the block into a prefix and a suffix and place a memory block in-between.
FileDataBlock prefixBlock = null;
if (index > blockOffset)
{
prefixBlock = new FileDataBlock(fileBlock.FileOffset, index - blockOffset);
}
FileDataBlock suffixBlock = null;
if (index < blockOffset + fileBlock.Length - 1)
{
suffixBlock = new FileDataBlock(
fileBlock.FileOffset + index - blockOffset + 1,
fileBlock.Length - (index - blockOffset + 1));
}
block = _dataMap.Replace(block, new MemoryDataBlock(value));
if (prefixBlock != null)
{
_dataMap.AddBefore(block, prefixBlock);
}
if (suffixBlock != null)
{
_dataMap.AddAfter(block, suffixBlock);
}
}
finally
{
OnChanged(EventArgs.Empty);
}
}
void IEnumerator.Reset()
{
if (this._version != this._map._version)
{
throw new InvalidOperationException("Collection was modified after the enumerator was instantiated.");
}
this._index = -1;
this._current = null;
}
/// <summary>
/// See <see cref="IByteProvider.InsertBytes" /> for more information.
/// </summary>
public void InsertBytes(long index, byte[] bs)
{
try
{
// Find the block affected.
long blockOffset;
DataBlock block = GetDataBlock(index, out blockOffset);
// If the insertion point is in a memory block, just insert it.
MemoryDataBlock memoryBlock = block as MemoryDataBlock;
if (memoryBlock != null)
{
memoryBlock.InsertBytes(index - blockOffset, bs);
return;
}
FileDataBlock fileBlock = (FileDataBlock)block;
// If the insertion point is at the start of a file block, and the previous block is a memory block, append it to that block.
if (blockOffset == index && block.PreviousBlock != null)
{
MemoryDataBlock previousMemoryBlock = block.PreviousBlock as MemoryDataBlock;
if (previousMemoryBlock != null)
{
previousMemoryBlock.InsertBytes(previousMemoryBlock.Length, bs);
return;
}
}
// Split the block into a prefix and a suffix and place a memory block in-between.
FileDataBlock prefixBlock = null;
if (index > blockOffset)
{
prefixBlock = new FileDataBlock(fileBlock.FileOffset, index - blockOffset);
}
FileDataBlock suffixBlock = null;
if (index < blockOffset + fileBlock.Length)
{
suffixBlock = new FileDataBlock(
fileBlock.FileOffset + index - blockOffset,
fileBlock.Length - (index - blockOffset));
}
block = _dataMap.Replace(block, new MemoryDataBlock(bs));
if (prefixBlock != null)
{
_dataMap.AddBefore(block, prefixBlock);
}
if (suffixBlock != null)
{
_dataMap.AddAfter(block, suffixBlock);
}
}
finally
{
_totalLength += bs.Length;
OnLengthChanged(EventArgs.Empty);
OnChanged(EventArgs.Empty);
}
}
public void AddBefore(DataBlock block, DataBlock newBlock)
{
AddBeforeInternal(block, newBlock);
}
private void InvalidateBlock(DataBlock block)
{
block._map = (DataMap)null;
block._nextBlock = (DataBlock)null;
block._previousBlock = (DataBlock)null;
}
public DataBlock Replace(DataBlock block, DataBlock newBlock)
{
AddAfterInternal(block, newBlock);
RemoveInternal(block);
return newBlock;
}
public DataBlock Replace(DataBlock block, DataBlock newBlock)
{
AddAfterInternal(block, newBlock);
RemoveInternal(block);
return(newBlock);
}
public void AddAfter(DataBlock block, DataBlock newBlock)
{
AddAfterInternal(block, newBlock);
}
void IEnumerator.Reset()
{
_index = -1;
_current = null;
}
public void Remove(DataBlock block)
{
RemoveInternal(block);
}
FileDataBlock GetNextFileDataBlock(DataBlock block, long dataOffset, out long nextDataOffset)
{
nextDataOffset = dataOffset + block.Length;
block = block.NextBlock;
while (block != null)
{
FileDataBlock fileBlock = block as FileDataBlock;
if (fileBlock != null)
{
return fileBlock;
}
nextDataOffset += block.Length;
block = block.NextBlock;
}
return null;
}
FileDataBlock GetNextFileDataBlock(DataBlock block, long dataOffset, out long nextDataOffset)
{
// Iterate over the remaining blocks until a file block is encountered.
nextDataOffset = dataOffset + block.Length;
block = block.NextBlock;
while (block != null)
{
FileDataBlock fileBlock = block as FileDataBlock;
if (fileBlock != null)
{
return fileBlock;
}
nextDataOffset += block.Length;
block = block.NextBlock;
}
return null;
}
void IEnumerator.Reset()
{
this._index = -1;
this._current = null;
}
