| /IO/Utilities/IOExtensions.cs |
|---|
| @@ -4,6 +4,8 @@ |
|---|
| // rights of fair usage, the disclaimer and warranty conditions. // |
| /////////////////////////////////////////////////////////////////////////// |
| |
| using System; |
| using System.Diagnostics; |
| using System.IO; |
| |
| namespace wasSharpNET.IO.Utilities |
| @@ -10,6 +12,34 @@ |
|---|
| { |
| public static class IOExtensions |
| { |
| /// <summary> |
| /// Attempt to obtain a filestream by polling a file till the handle becomes available. |
| /// </summary> |
| /// <param name="path">the path to the file</param> |
| /// <param name="mode">the file mode to use</param> |
| /// <param name="access">the level of access to the file</param> |
| /// <param name="share">the type of file share locking</param> |
| /// <param name="timeout">the timeout in milliseconds to fail opening the file</param> |
| /// <returns>a filestream if the file was opened successfully</returns> |
| public static FileStream GetWriteStream(string path, FileMode mode, FileAccess access, FileShare share, |
| int timeout) |
| { |
| var time = Stopwatch.StartNew(); |
| while (time.ElapsedMilliseconds < timeout) |
| try |
| { |
| return new FileStream(path, mode, access, share); |
| } |
| catch (IOException e) |
| { |
| // access error |
| if (e.HResult != -2147024864) |
| throw; |
| } |
| |
| throw new TimeoutException($"Failed to get a write handle to {path} within {timeout}ms."); |
| } |
| |
| public static bool isRootedIn(this string path, string root) |
| { |
| // Path is empty and root is empty. |
| @@ -28,8 +58,8 @@ |
|---|
| if (string.IsNullOrEmpty(path)) |
| return true; |
| |
| DirectoryInfo p = new DirectoryInfo(path); |
| DirectoryInfo r = new DirectoryInfo(root); |
| var p = new DirectoryInfo(path); |
| var r = new DirectoryInfo(root); |
| |
| return string.Equals(p.Parent?.FullName, r.Parent?.FullName) || isRootedIn(p.Parent?.FullName, root); |
| } |
| @@ -36,14 +66,12 @@ |
|---|
| |
| public static void Empty(this string directory) |
| { |
| DirectoryInfo dir = new DirectoryInfo(directory); |
| var dir = new DirectoryInfo(directory); |
| |
| foreach (FileInfo fi in dir.GetFiles()) |
| { |
| foreach (var fi in dir.GetFiles()) |
| fi.Delete(); |
| } |
| |
| foreach (DirectoryInfo di in dir.GetDirectories()) |
| foreach (var di in dir.GetDirectories()) |
| { |
| Empty(di.FullName); |
| di.Delete(); |
