// file atomic write https://blogs.msdn.microsoft.com/adioltean/2005/12/28/how-to-do-atomic-writes-in-a-file/
public static void WriteToFile(string filePath, Stream stream, AtomicWriteTempFileOptions options = null)
{
options = options ?? new AtomicWriteTempFileOptions();
string tempFilePath = (options.Destination == TempFileDestination.Random
? Path.GetTempFileName()
: filePath)
+ options.TempFileSuffix;
// delete any existing
if (File.Exists(tempFilePath))
{
FileSystemHelper.DeleteFile(tempFilePath);
}
using (FileStream tempFile = File.OpenWrite(tempFilePath))
{
stream.CopyTo(tempFile);
tempFile.Flush(true);
}
try
{
// delete any existing
if (File.Exists(filePath))
{
FileSystemHelper.DeleteFile(filePath);
}
FileSystemHelper.MoveFile(tempFilePath, filePath);
}
catch (Exception ex)
{
try
{
FileSystemHelper.DeleteFile(tempFilePath);
}
catch (Exception)
{
//throw;
}
throw;
}
}
public static void WriteToFile(string filePath, string content, Encoding encoding = null, AtomicWriteTempFileOptions options = null)
{
options = options ?? new AtomicWriteTempFileOptions();
string tempFilePath = (options.Destination == TempFileDestination.Random
? Path.GetTempFileName()
: filePath)
+ options.TempFileSuffix;
// delete any existing
if (File.Exists(tempFilePath))
{
FileSystemHelper.DeleteFile(tempFilePath);
}
using (FileStream tempFile = File.Open(tempFilePath, FileMode.OpenOrCreate, FileAccess.Write))
{
using (var nonCLosingStream = new NonClosingStreamWrapper(tempFile))
using (var sw = encoding != null ? new StreamWriter(nonCLosingStream, encoding) : new StreamWriter(nonCLosingStream))
{
sw.Write(content);
}
tempFile.Flush(true);
}
try
{
// delete any existing
if (File.Exists(filePath))
{
FileSystemHelper.DeleteFile(filePath);
}
FileSystemHelper.MoveFile(tempFilePath, filePath);
}
catch (Exception ex)
{
try
{
FileSystemHelper.SafeDeleteFile(tempFilePath);
}
catch (Exception)
{
//throw;
}
throw;
}
}