private void ProcessWriteFile(string name, bool hasFile, int oldBlockIndex, int blockIndex, int length)
{
BlockData blockData = m_BlockDatas[blockIndex];
if (hasFile)
{
BlockData oldBlockData = m_BlockDatas[oldBlockIndex];
blockData = new BlockData(oldBlockData.StringIndex, blockData.ClusterIndex, length);
m_BlockDatas[blockIndex] = blockData;
WriteBlockData(blockIndex);
oldBlockData = oldBlockData.Free();
m_BlockDatas[oldBlockIndex] = oldBlockData;
m_FreeBlockIndexes.Add(oldBlockData.Length, oldBlockIndex);
WriteBlockData(oldBlockIndex);
}
else
{
int stringIndex = AllocString(name);
blockData = new BlockData(stringIndex, blockData.ClusterIndex, length);
m_BlockDatas[blockIndex] = blockData;
WriteBlockData(blockIndex);
}
if (hasFile)
{
m_FileDatas[name] = blockIndex;
}
else
{
m_FileDatas.Add(name, blockIndex);
}
}
/// <summary>
/// 删除指定文件。
/// </summary>
/// <param name="name">要删除的文件名称。</param>
/// <returns>是否删除指定文件成功。</returns>
public bool DeleteFile(string name)
{
if (m_Access != FileSystemAccess.Write && m_Access != FileSystemAccess.ReadWrite)
{
throw new GameFrameworkException("File system is not writable.");
}
if (string.IsNullOrEmpty(name))
{
throw new GameFrameworkException("Name is invalid.");
}
int blockIndex = 0;
if (!m_FileDatas.TryGetValue(name, out blockIndex))
{
return(false);
}
m_FileDatas.Remove(name);
BlockData blockData = m_BlockDatas[blockIndex];
int stringIndex = blockData.StringIndex;
StringData stringData = m_StringDatas[stringIndex].Clear();
m_FreeStringIndexes.Enqueue(stringIndex);
m_FreeStringDatas.Enqueue(stringData);
m_StringDatas.Remove(stringIndex);
WriteStringData(stringIndex, stringData);
blockData = blockData.Free();
m_BlockDatas[blockIndex] = blockData;
if (!TryCombineFreeBlocks(blockIndex))
{
m_FreeBlockIndexes.Add(blockData.Length, blockIndex);
WriteBlockData(blockIndex);
}
m_Stream.Flush();
return(true);
}