public void SetFileLastModifyTime(string url, ref DateTime dt)
{
string key = CFileManager.GetMd5(url.ToLower());
CCachedFileInfo cacheFileInfo = m_cachedFileInfoSet.GetFileInfo(key);
if (cacheFileInfo != null)
{
cacheFileInfo.m_lastModifyTime = dt;
}
}
//--------------------------------------------------
/// 添加数据
/// @url
/// @data
//--------------------------------------------------
public void AddFileInfo(string key, CCachedFileInfo cachedTextureInfo)
{
if (m_cachedFileInfoMap.ContainsKey(key))
{
return;
}
if (m_cachedFileInfos != null)
{
m_cachedFileInfoMap.Add(key, cachedTextureInfo);
m_cachedFileInfos.Add(cachedTextureInfo);
}
}
//--------------------------------------------------
/// 返回缓存文件信息
/// @key
//--------------------------------------------------
public CCachedFileInfo GetFileInfo(string key)
{
CCachedFileInfo cachedFileInfo = null;
if (m_cachedFileInfoMap.TryGetValue(key, out cachedFileInfo))
{
return(cachedFileInfo);
}
else
{
return(null);
}
}
//--------------------------------------------------
/// 移除最早的数据
/// @return key
//--------------------------------------------------
public string RemoveEarliestFileInfo()
{
if (m_cachedFileInfos == null || m_cachedFileInfos.Count <= 0)
{
return(null);
}
CCachedFileInfo removeCachedFileInfo = m_cachedFileInfos[0];
m_cachedFileInfos.RemoveAt(0);
m_cachedFileInfoMap.Remove(removeCachedFileInfo.m_key);
return(removeCachedFileInfo.m_key);
}
public DateTime GetFileLastModifyTime(string url)
{
string key = CFileManager.GetMd5(url.ToLower());
CCachedFileInfo cacheFileInfo = m_cachedFileInfoSet.GetFileInfo(key);
if (cacheFileInfo != null)
{
return(cacheFileInfo.m_lastModifyTime);
}
else
{
return(DateTime.MinValue);
}
}
//--------------------------------------
/// 排序函数
/// @按m_lastModifyTime升序排列
//--------------------------------------
public int CompareTo(object obj)
{
CCachedFileInfo cachedTextureInfo = obj as CCachedFileInfo;
if (m_lastModifyTime > cachedTextureInfo.m_lastModifyTime)
{
return(1);
}
else if (m_lastModifyTime == cachedTextureInfo.m_lastModifyTime)
{
return(0);
}
else
{
return(-1);
}
}
//--------------------------------------------------
/// 读出数据
/// @buffer
/// @offset
/// @dataLength
//--------------------------------------------------
public int Read(byte[] buffer, int offset, uint dataLength)
{
m_cachedFileInfos.Clear();
m_cachedFileInfoMap.Clear();
//数据长度不合法，不能读取数据
if (dataLength < 6 || offset + (int)dataLength > buffer.Length)
{
return(-1);
}
//校验数据长度
int storedDataLength = CMemoryManager.ReadInt(buffer, ref offset);
if (storedDataLength < 6 || storedDataLength != (int)dataLength)
{
return(-2);
}
//校验版本号
int version = CMemoryManager.ReadShort(buffer, ref offset);
if (version != c_version)
{
return(-3);
}
//读取数据
int infoAmount = CMemoryManager.ReadShort(buffer, ref offset);
for (int i = 0; i < infoAmount; i++)
{
CCachedFileInfo cacheFileInfo = new CCachedFileInfo();
cacheFileInfo.Read(buffer, ref offset);
//防止key重复
if (m_cachedFileInfoMap.ContainsKey(cacheFileInfo.m_key) == false)
{
m_cachedFileInfoMap.Add(cacheFileInfo.m_key, cacheFileInfo);
m_cachedFileInfos.Add(cacheFileInfo);
}
}
//按最后修改时间排序
m_cachedFileInfos.Sort();
return(0);
}
//--------------------------------------------------
/// 获取缓存的资源文件路径
/// @url : 地址
/// @validDays : 有效天数
//--------------------------------------------------
public string GetCachedFilePath(string url, float validDays)
{
string key = CFileManager.GetMd5(url.ToLower());
CCachedFileInfo cachedFileInfo = m_cachedFileInfoSet.GetFileInfo(key);
//不存在
if (cachedFileInfo == null)
{
return(string.Empty);
}
//检查是否过期
if ((DateTime.Now - cachedFileInfo.m_lastModifyTime).TotalDays >= validDays)
{
RemoveFile(key);
return(string.Empty);
}
string cachedFileFullPath = CFileManager.CombinePath(m_dir, key + m_fileExtension);
//检查文件是否存在
if (CFileManager.IsFileExist(cachedFileFullPath))
{
//通过校验文件长度，来判断是否被串改
if (cachedFileInfo.m_fileLength == (int)CFileManager.GetFileLength(cachedFileFullPath))
{
return(cachedFileFullPath);
}
else
{
RemoveFile(key);
}
}
return(string.Empty);
}
//--------------------------------------------------
/// 添加缓存文件
/// @url
/// @cacheType
/// @width
/// @height
/// @isGif
/// @data
//--------------------------------------------------
public void AddFile(string url, byte[] data, int tagInt1 = 0, int tagInt2 = 0, bool tagBool = false)
{
string key = CFileManager.GetMd5(url.ToLower());
List <CCachedFileInfo> cachedFileInfoList = m_cachedFileInfoSet.m_cachedFileInfos;
if (cachedFileInfoList == null)
{
return;
}
if (m_cachedFileInfoSet.m_cachedFileInfoMap.ContainsKey(key))
{
CCachedFileInfo cachedFileInfo = null;
m_cachedFileInfoSet.m_cachedFileInfoMap.TryGetValue(key, out cachedFileInfo);
Debug.Assert(cachedFileInfoList != null && cachedFileInfoList.Contains(cachedFileInfo), "zen me ke neng?");
//修改信息
cachedFileInfo.m_fileLength = data.Length;
cachedFileInfo.m_lastModifyTime = DateTime.Now;
cachedFileInfo.m_tagInt1 = tagInt1;
cachedFileInfo.m_tagInt2 = tagInt2;
cachedFileInfo.m_tagBool = tagBool;
}
else
{
//如果数量达到上限，移除排在最前面的文件
if (cachedFileInfoList.Count >= m_maxCnt)
{
string removeKey = m_cachedFileInfoSet.RemoveEarliestFileInfo();
//删除缓存文件
if (!string.IsNullOrEmpty(removeKey))
{
string removeCachedFileFullPath = CFileManager.CombinePath(m_dir, removeKey + m_fileExtension);
if (CFileManager.IsFileExist(removeCachedFileFullPath))
{
CFileManager.DeleteFile(removeCachedFileFullPath);
}
}
}
CCachedFileInfo cachedFileInfo = new CCachedFileInfo();
cachedFileInfo.m_key = key;
cachedFileInfo.m_fileLength = data.Length;
cachedFileInfo.m_lastModifyTime = DateTime.Now;
cachedFileInfo.m_tagInt1 = tagInt1;
cachedFileInfo.m_tagInt2 = tagInt2;
cachedFileInfo.m_tagBool = tagBool;
m_cachedFileInfoSet.AddFileInfo(key, cachedFileInfo);
}
//排序
m_cachedFileInfoSet.m_cachedFileInfos.Sort();
//写入信息文件
byte[] buffer = CFileManager.LockFileBuffer();
try
{
MakeDirReady();
int offset = 0;
m_cachedFileInfoSet.Write(buffer, ref offset);
if (CFileManager.IsFileExist(m_metaFilePath))
{
CFileManager.DeleteFile(m_metaFilePath);
}
CFileManager.WriteFile(m_metaFilePath, buffer, 0, offset);
}
finally
{
CFileManager.UnLockFileBuffer();
}
//写入数据文件
string cachedFileFullPath = CFileManager.CombinePath(m_dir, key + m_fileExtension);
if (CFileManager.IsFileExist(cachedFileFullPath))
{
CFileManager.DeleteFile(cachedFileFullPath);
}
CFileManager.WriteFile(cachedFileFullPath, data);
}
