private FileBlock GetBlock(long offset)
{
FileBlock result = null;
int num = (int)(offset / m_blockSize);
if (num < m_blocks.Count)
{
result = m_blocks[num];
}
return(result);
}
private long SearchBlock(long offset, long size)
{
long result = -1L;
FileBlock block = GetBlock(offset);
if (block != null)
{
result = block.AllocateSpace(size);
}
return(result);
}
private FileBlock GetOrCreateBlock(long offset)
{
int num = (int)(offset / m_blockSize);
if (num >= m_blocks.Count)
{
for (int i = m_blocks.Count - 1; i < num; i++)
{
m_blocks.Add(null);
}
m_blocks.Add(new FileBlock());
}
FileBlock fileBlock = m_blocks[num];
if (fileBlock == null)
{
fileBlock = new FileBlock();
m_blocks[num] = fileBlock;
}
return(fileBlock);
}