///
/// <summary>
/// Copy a directory, including all files and [optionally] subdirectories.
/// </summary>
/// <param name="InName">Input directory name.</param>
/// <param name="OutName">Output directory name.</param>
/// <param name="IncludeDirs">true to include subdirectories.</param>
/// <param name="CheckAttr">true to reset attributes of existing files before copying
/// (allows r/o files to be overwritten).</param>
/// <param name="PreserveTime">true to preserve the timestamp from the input file.</param>
/// <param name="OnlyNew">True to only copy new files (no existing file).</param>
/// <param name="KeepNewest">true to retain any newer existing file.</param>
/// <param name="ErrorHandler">Error handler for a file copy failure.</param>
/// <returns>error message if copy failed, otherwise null.</returns>
///
public static string CopyDirectory(string InName, string OutName,
bool IncludeDirs, bool CheckAttr, bool PreserveTime,
bool OnlyNew, bool KeepNewest, FileErrorHandler ErrorHandler)
{
if (!Directory.Exists(InName))
{
return("Directory " + InName + " does not exist!");
}
try
{
DirectoryInfo Input = new DirectoryInfo(InName);
if (!Directory.Exists(OutName))
{
Directory.CreateDirectory(OutName);
}
if (IncludeDirs)
{
DirectoryInfo[] SubDirs = Input.GetDirectories();
foreach (DirectoryInfo DirName in SubDirs)
{
string ErrMsg = CopyDirectory(Path.Combine(InName, DirName.Name),
Path.Combine(OutName, DirName.Name), true,
CheckAttr, PreserveTime, false, ErrorHandler);
if (ErrMsg != null)
{
return(ErrMsg);
}
}
}
FileInfo[] InFiles = Input.GetFiles();
foreach (FileInfo InFile in InFiles)
{
string FileName = Path.Combine(OutName, InFile.Name);
if (File.Exists(FileName))
{
if (OnlyNew)
{
continue;
}
if (KeepNewest)
{
DateTime OldFileTime = DataConverter.ReadDateToSecond(File.GetLastWriteTimeUtc(FileName));
DateTime NewFileTime = DataConverter.ReadDateToSecond(InFile.LastWriteTimeUtc);
if (OldFileTime > NewFileTime)
{
continue;
}
}
if (CheckAttr)
{
File.SetAttributes(FileName, FileAttributes.Normal);
}
}
// Make sure not Hidden
FileAttributes TempAtt = InFile.Attributes;
if ((TempAtt & FileAttributes.Hidden) != FileAttributes.Hidden)
{
bool Retry = true;
bool Copied = false;
while (Retry)
{
try
{
Retry = false;
InFile.CopyTo(FileName, true);
Copied = true;
}
catch (Exception ex)
{
if (ErrorHandler == null)
{
throw;
}
FileErrorEvent Ev = new FileErrorEvent(InFile, FileName, ex);
FileErrorAction Action = ErrorHandler(Ev);
switch (Action)
{
case FileErrorAction.Cancel:
return(Ev.ReturnMsg);
case FileErrorAction.Retry:
Retry = true;
break;
default:
break;
}
}
}
if (PreserveTime && Copied)
{
FileAttributes NewAttr = 0;
if (InFile.IsReadOnly)
{
NewAttr = File.GetAttributes(FileName);
NewAttr &= ~FileAttributes.ReadOnly;
File.SetAttributes(FileName, NewAttr);
}
File.SetCreationTimeUtc(FileName, InFile.CreationTimeUtc);
File.SetLastAccessTimeUtc(FileName, InFile.LastAccessTimeUtc);
File.SetLastWriteTimeUtc(FileName, InFile.LastWriteTimeUtc);
if (InFile.IsReadOnly)
{
NewAttr |= FileAttributes.ReadOnly;
File.SetAttributes(FileName, NewAttr);
}
}
}
}
}
catch (Exception ex)
{
return(ex.Message);
}
return(null);
}