Changeset 2282 for trunk/eraser/Eraser.Util/Shell.cs

Timestamp:

1/4/2011 2:42:32 AM (2 years ago)

Author:

lowjoel

Message:

Prevent recursive folder definitions when users use Secure Move to move a folder to be a subfolder of the source directory.

File:

• trunk/eraser/Eraser.Util/Shell.cs (modified) (1 diff)

trunk/eraser/Eraser.Util/Shell.cs

@@ -142 +142 @@
 
         /// <summary>
+        /// Verifies if the path given is rooted at the given absolute path.
+        /// </summary>
+        /// <param name="absolutePath">The root path.</param>
+        /// <param name="path">The path to verify.</param>
+        /// <returns>True if the path provided is a subfolder/sub-file of the provided root path.</returns>
+        public static bool IsRootedAt(FileSystemInfo absolutePath, string path)
+        {
+            //Convert the path in question to an absolute path
+            if (!Path.IsPathRooted(path))
+                path = Path.GetFullPath(path);
+
+            //Split the directory path to its component folders
+            string[] absoluteDirectories = absolutePath.FullName.Split(
+                Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+            string[] relativeDirectories = path.Split(
+                Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+
+            //Compare element by element; if the absolute path compares till the end, the
+            //provided path is a subdirectory
+            for (int i = 0; i < absoluteDirectories.Length; ++i)
+                if (absoluteDirectories[i] != relativeDirectories[i])
+                    return false;
+
+            return true;
+        }
+
+        /// <summary>
         /// A List of known folder IDs in the shell namespace.
         /// </summary>