/// <summary>create a backup file</summary>
/// <param name="copy">moves if false, copies otherwise</param>
/// <returns>name of backupfile, if there was one created</returns>
/// <remarks>the Os.LocalBackupDir will be used; make sure it's not in the Dropbox</remarks>
public string backup(bool copy = false)
{
if (!File.Exists(FullName))
{
return(null); // no file no backup
}
var backupFile = new RaiFile(FullName);
var idx = (backupFile.Path.Length > 2 && backupFile.Path[1] == ':') ? 3 : 0; // works as expected for c:/123 or c:\123, but not for c:123
var s = backupFile.Path.Substring(idx);
backupFile.Path = (Os.LocalBackupDir + s).Replace("Dropbox/", "").Replace("dropbox/", ""); // eliminates Dropbox for LocalBackupDir to avoid ensure
mkdir(backupFile.Path);
backupFile.Name = backupFile.Name + " " + DateTimeOffset.UtcNow.ToString(Os.DATEFORMAT);
backupFile.Ext = Ext;
if (copy)
{
backupFile.cp(this);
}
else
{
backupFile.mv(this);
}
return(backupFile.FullName);
}
