/// <summary>
/// Compiles a new Package File from the currently stored Information
/// </summary>
/// <param name="ms">The Memory Stream you want to write</param>
/// <param name="flname">Filename for the Package</param>
protected void Save(MemoryStream ms, string flname)
{
StreamFactory.CloseStream(flname);
string tmpfile = System.IO.Path.GetTempFileName();
try
{
// Try to save to a temp file
System.IO.FileStream fs = new FileStream(tmpfile, FileMode.Create);
try
{
Save(ms, fs);
}
finally
{
fs.Close();
fs.Dispose();
fs = null;
}
// If the destination already exists...
if (System.IO.File.Exists(flname))
{
// ...back up the current package content...
if (Helper.WindowsRegistry.AutoBackup)
{
string bakfile = GetBakFileName(flname);
if (System.IO.File.Exists(bakfile))
{
System.IO.File.Delete(bakfile);
}
System.IO.File.Copy(flname, bakfile, true);
}
// ...and get rid
System.IO.File.Delete(flname);
}
}
catch (Exception ex)
{
System.IO.File.Delete(tmpfile);
throw ex;
}
// At this point we have successfully written tmpfile and deleted flname
// Rename the temp file to the destination
System.IO.File.Move(tmpfile, flname);
StreamFactory.UseStream(flname, FileAccess.Read);
}
/// <summary>
/// Checks if the passed File is writable by the System
/// </summary>
/// <param name="flname">The FileName</param>
/// <returns>true, if the File is writable</returns>
public static bool CanWriteToFile(string flname, bool close)
{
if (!System.IO.File.Exists(flname))
{
return(true);
}
StreamItem si = StreamFactory.UseStream(flname, System.IO.FileAccess.ReadWrite);
bool res = (si.StreamState == StreamState.Opened);
if (close && res)
{
si.Close();
}
return(res);
}
