public static long CopyFile(IFileStorageProviderDataProvider dataProvider, Guid oldPhysicalFileID, Guid newPhysicalFileID, string extensionName)
{
long result = 0;
IFileStorageProvider oldProvider = FileStorageProviderFactory.CreateFileStorageProvider(dataProvider, oldPhysicalFileID, extensionName);
IFileStorageProvider newProvider = FileStorageProviderFactory.CreateFileStorageProvider(dataProvider, CurrentConfigSetting, newPhysicalFileID, extensionName);
if (oldProvider != null && newProvider != null)
{
try
{
byte[] buffer = GetCacheBuffer(DefaultBufferSize);
int readLen = oldProvider.Read(buffer, 0, DefaultBufferSize);
while (readLen > 0)
{
newProvider.Write(buffer, 0, readLen);
readLen = oldProvider.Read(buffer, 0, DefaultBufferSize);
}
result = newProvider.Length;
}
finally
{
oldProvider.Close();
newProvider.Close();
}
}
return(result);
}
public static byte[] ReadFile(IFileStorageProviderDataProvider dataProvider, Guid physicalFileID, string extensionName, long position, int readCount)
{
LogHelper.Log.ErrorFormat("FileStorageManager.ReadFile(IFileStorageProviderDataProvider dataProvider='{0}', Guid physicalFileID='{1}', string extensionName='{2}', long position='{3}', int readCount='{4}')", dataProvider, physicalFileID, extensionName, position, readCount);
byte[] result = null;
IFileStorageProvider provider = FileStorageProviderFactory.CreateFileStorageProvider(dataProvider, physicalFileID, extensionName);
if (provider != null)
{
try
{
if (readCount > 0)
{
provider.Seek(position, System.IO.SeekOrigin.Begin);
byte[] buffer = GetCacheBuffer(readCount);
int readLen = provider.Read(buffer, 0, readCount);
if (readLen > 0)
{
result = new byte[readLen];
Buffer.BlockCopy(buffer, 0, result, 0, readLen);
}
}
}
catch (Exception ex)
{
LogHelper.Log.Error(ex.Message, ex);
}
finally
{
provider.Close();
}
}
LogHelper.Log.ErrorFormat("FileStorageManager.ReadFile Result Bytes Length='{0}'", result.Length);
return(result);
}
public static long WriteFile(IFileStorageProviderDataProvider dataProvider, Guid physicalFileID, string extensionName, long position, byte[] writeData)
{
long result = 0;
IFileStorageProvider provider = FileStorageProviderFactory.CreateFileStorageProvider(dataProvider, physicalFileID, extensionName);
if (provider != null)
{
try
{
int length = 0;
if (writeData != null)
{
length = writeData.Length;
}
if (length > 0)
{
provider.Seek(position, System.IO.SeekOrigin.Begin);
provider.Write(writeData, 0, length);
result = provider.Length;
}
}
finally
{
provider.Close();
}
}
return(result);
}
public static void CreateNewFile(IFileStorageProviderDataProvider dataProvider, Guid physicalFileID, string extensionName)
{
IFileStorageProvider provider = FileStorageProviderFactory.CreateFileStorageProvider(dataProvider, CurrentConfigSetting, physicalFileID, extensionName);
if (provider != null)
{
try
{
provider.SetLength(0);
}
finally
{
provider.Close();
}
}
}
public static void SetFileLength(IFileStorageProviderDataProvider dataProvider, Guid physicalFileID, string extensionName, long length)
{
IFileStorageProvider provider = FileStorageProviderFactory.CreateFileStorageProvider(dataProvider, physicalFileID, extensionName);
if (provider != null)
{
try
{
provider.SetLength(length);
}
finally
{
provider.Close();
}
}
}