/// <summary>
/// 保存索引信息。
/// </summary>
public override void SaveIndexInfo()
{
lock (m_locker)
{
uint indexPosition = (uint)m_fileStream.Position;
var indexInfos = new List <Byte>();
foreach (var item in m_fileIndexes)
{
indexInfos.AddRange(item.Value.GetEncodeData());
}
foreach (var item in m_deletedIndexes)
{
indexInfos.AddRange(item.GetEncodeData());
}
var indexInfo = indexInfos.ToArray();
if (indexInfo.Length > 0)
{
indexInfo = DESCrypto.Encrypt(indexInfo, m_number); //加密索引数据
}
m_fileStream.Position = m_packageInfo.IndexOffset; //将文件偏移重置为索引偏移起始位置
m_fileStream.Write(indexInfo, 0, indexInfo.Length);
m_fileStream.Flush();
SavePackageInfo(m_fileStream);
m_fileStream.Position = indexPosition;
}
}
public void SaveIndexInfo()
{
lock (m_locker)
{
uint position = (uint)this.m_fileStream.Position;
List <byte> list = new List <byte>();
foreach (KeyValuePair <string, IndexInfo> pair in this.m_fileIndexes)
{
list.AddRange(pair.Value.GetEncodeData());
}
foreach (IndexInfo info in this.m_deletedIndexes)
{
list.AddRange(info.GetEncodeData());
}
byte[] toEncrypt = list.ToArray();
if (toEncrypt.Length > 0)
{
toEncrypt = DESCrypto.Encrypt(toEncrypt, this.m_number);
}
this.m_fileStream.Position = this.m_packageInfo.IndexOffset;
this.m_fileStream.Write(toEncrypt, 0, toEncrypt.Length);
this.m_fileStream.Flush();
this.SavePackageInfo(this.m_fileStream);
this.m_fileStream.Position = position;
}
}
private void LoadIndexInfo(Byte[] indexData, bool needBackUpIndex)
{
if (indexData.Length > 0)
{
if (needBackUpIndex)
{
BackupIndexInfo(indexData);
}
indexData = DESCrypto.Decrypt(indexData, m_number);//解密索引数据
}
m_deletedIndexes.Clear();
m_fileIndexes.Clear();
var index = 0;
while (index < indexData.Length)
{
var info = IndexInfo.Decode(indexData, ref index);
if (info.Deleted)
{
m_deletedIndexes.Add(info);
}
else
{
m_fileIndexes[info.Id.PathNormalize()] = info;
}
}
m_memoryStream.Position = m_packageInfo.IndexOffset;//重置回文件信息结尾处
}
private void LoadIndexInfo(byte[] indexData, bool needBackUpIndex)
{
if (indexData.Length > 0)
{
if (needBackUpIndex)
{
this.BackupIndexInfo(indexData);
}
indexData = DESCrypto.Decrypt(indexData, this.m_number);
}
this.m_deletedIndexes.Clear();
this.m_fileIndexes.Clear();
int offset = 0;
while (offset < indexData.Length)
{
IndexInfo item = IndexInfo.Decode(indexData, ref offset);
if (item.Deleted)
{
this.m_deletedIndexes.Add(item);
}
else
{
this.m_fileIndexes[item.Id.PathNormalize()] = item;
}
}
this.m_fileStream.Position = this.m_packageInfo.IndexOffset;
}