public static Task <bool> Start(
string FullSrc, string FullTrg, IEnumerable <CopyItem> files,
Action <string, UInt64?> OnCopy,
Action OnDirectoryCreated,
Spi.Native.Win32ApiErrorCallback OnWin32Error,
int MaxThreads,
bool dryRun)
{
Console.Error.WriteLine($"I: starting Parallel.ForEach() with MaxDegreeOfParallelism of {MaxThreads}");
return
(Task.Run(() =>
{
bool hasErrors = false;
try
{
var result = Parallel.ForEach(
source: files,
parallelOptions: new ParallelOptions()
{
MaxDegreeOfParallelism = MaxThreads
},
body: (itemToCopy) =>
{
if (!CopyFile.Run(
itemToCopy.relativeFilename
, itemToCopy.filesize
, FullSrc
, FullTrg
, OnCopy
, OnDirectoryCreated
, OnWin32Error
, dryRun))
{
hasErrors = true;
}
});
}
catch (Exception ex)
{
Console.Error.WriteLine($"Parallel.ForEach()\n{ex}");
}
return hasErrors;
}));
}
public static bool DoCopyFile(string FullSrc, string FullTrg,
Spi.Native.Win32ApiErrorCallback OnWin32Error, Action OnCreateDirectory)
{
if (Spi.Native.CopyFile(lpExistingFileName: FullSrc, lpNewFileName: FullTrg, bFailIfExists: false))
{
return(true);
}
bool ok = false;
int LastError = Marshal.GetLastWin32Error();
if (LastError == (int)Spi.Native.Win32Error.ERROR_PATH_NOT_FOUND)
{
//string FullTargetDirectoryname = System.IO.Path.GetDirectoryName(FullTrg);
string FullTargetDirectoryname = Spi.Misc.GetDirectoryName(FullTrg);
if (!Spi.Misc.CreatePath(FullTargetDirectoryname, OnWin32Error, OnCreateDirectory))
{
OnWin32Error?.Invoke(Marshal.GetLastWin32Error(), "CreateDirectoryW", FullTargetDirectoryname);
return(false);
}
}
else if (LastError == (int)Spi.Native.Win32Error.ERROR_ACCESS_DENIED)
{
if (!Spi.Native.SetFileAttributes(FullTrg, Spi.FileAttributes.Normal))
{
OnWin32Error?.Invoke(Marshal.GetLastWin32Error(), "SetFileAttributesW", FullTrg);
return(false);
}
}
if (Spi.Native.CopyFile(lpExistingFileName: FullSrc, lpNewFileName: FullTrg, bFailIfExists: false))
{
ok = true;
}
if (!ok)
{
OnWin32Error?.Invoke(Marshal.GetLastWin32Error(), "CopyFileW", $"\"{FullSrc}\" \"{FullTrg}\"");
}
return(ok);
}
public static bool Run(string relativeFilename, UInt64?filesize, string srcDir, string trgDir,
Action <string, UInt64?> OnCopy, Action OnCreateDirectory,
Spi.Native.Win32ApiErrorCallback OnWin32Error, bool dryrun)
{
string FullSrc = Path.Combine(srcDir, relativeFilename);
string FullTrg = Path.Combine(trgDir, relativeFilename);
if (dryrun)
{
Console.Out.WriteLine($"\"{FullSrc}\" \"{FullTrg}\"");
return(true);
}
bool ok = DoCopyFile(FullSrc, FullTrg, OnWin32Error, OnCreateDirectory);
if (ok)
{
OnCopy?.Invoke(relativeFilename, filesize);
}
return(ok);
}
