Add APIs to check if a given path exists

Tarun047 · Jan 26, 2022 · 81349ba · 81349ba
1 parent 43ceed5
commit 81349ba
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Showing 2 changed files with 25 additions and 0 deletions.
diff --git a/src/libraries/System.Private.CoreLib/src/System/IO/Path.Unix.cs b/src/libraries/System.Private.CoreLib/src/System/IO/Path.Unix.cs
@@ -13,6 +13,18 @@ public static partial class Path
 
         public static char[] GetInvalidPathChars() => new char[] { '\0' };
 
+        // Checks if the given path is available for use.
+        public static bool Exists([NotNullWhen(true)] string? path)
+        {
+            if (path == null)
+            {
+                return false;
+            }
+
+            ReadOnlySpan<char> fullPath = GetFullPath(path).AsSpan();
+            return Interop.Sys.LStat(fullPath, out Interop.Sys.FileStatus _) > 0;
+        }
+
         // Expands the given path to a fully qualified path.
         public static string GetFullPath(string path)
         {

diff --git a/src/libraries/System.Private.CoreLib/src/System/IO/Path.Windows.cs b/src/libraries/System.Private.CoreLib/src/System/IO/Path.Windows.cs
@@ -27,6 +27,19 @@ public static partial class Path
             (char)31
         };
 
+        //Checks if the given path is available for use.
+        public static bool Exists([NotNullWhen(true)] string? path)
+        {
+            if (path == null)
+            {
+                return false;
+            }
+
+            var fullPath = GetFullPath(path);
+            Interop.Kernel32.WIN32_FILE_ATTRIBUTE_DATA data = default;
+            return FileSystem.FillAttributeInfo(fullPath, ref data, returnErrorOnNotFound: true) == 0;
+        }
+
         // Expands the given path to a fully qualified path.
         public static string GetFullPath(string path)
         {