From c7916981cc01e37d189e1802463fa68d10a17bf2 Mon Sep 17 00:00:00 2001
From: xgu3 <xgu3@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Fri, 26 Jan 2007 08:35:57 +0000
Subject: To fix, cd ...... works unnormally in shell USB CBI1 driver has no
 component name protocol

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2328 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../Bus/SimpleFileSystem/WinNtSimpleFileSystem.c   | 35 ++++++++++++++++++++--
 1 file changed, 33 insertions(+), 2 deletions(-)

(limited to 'EdkNt32Pkg/Dxe/WinNtThunk')

diff --git a/EdkNt32Pkg/Dxe/WinNtThunk/Bus/SimpleFileSystem/WinNtSimpleFileSystem.c b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/SimpleFileSystem/WinNtSimpleFileSystem.c
index bea7de40f8..30f5476d5a 100644
--- a/EdkNt32Pkg/Dxe/WinNtThunk/Bus/SimpleFileSystem/WinNtSimpleFileSystem.c
+++ b/EdkNt32Pkg/Dxe/WinNtThunk/Bus/SimpleFileSystem/WinNtSimpleFileSystem.c
@@ -688,6 +688,32 @@ OpenRoot:
     FileName[StrLen (FileName) - 1]  = 0;
   }
 
+  //
+  // If file name does not equal to "." or "..", 
+  // then we trim the leading/trailing blanks and trailing dots
+  //
+  if (StrCmp (FileName, L".") != 0 && StrCmp (FileName, L"..") != 0) {
+    //
+    // Trim leading blanks
+    //
+    Count = 0;
+    for (TempFileName = FileName;
+      *TempFileName != 0 && *TempFileName == L' ';
+      TempFileName++) {
+      Count++;
+    }
+    CutPrefix (FileName, Count);
+    //
+    // Trim trailing dots and blanks
+    //
+    for (TempFileName = FileName + StrLen (FileName) - 1; 
+      TempFileName >= FileName && (*TempFileName == L' ' || *TempFileName == L'.');
+      TempFileName--) {
+      ;
+    }
+    *(TempFileName + 1) = 0;
+  }
+
   //
   // Attempt to open the file
   //
@@ -738,8 +764,13 @@ OpenRoot:
     StrCat (NewPrivateFile->FileName, FileName + 1);
   } else {
     StrCpy (NewPrivateFile->FileName, NewPrivateFile->FilePath);
-    StrCat (NewPrivateFile->FileName, L"\\");
-    StrCat (NewPrivateFile->FileName, FileName);
+    if (StrCmp (FileName, L"") != 0) {
+      //
+      // In case the filename becomes empty, especially after trimming dots and blanks
+      //    
+      StrCat (NewPrivateFile->FileName, L"\\");
+      StrCat (NewPrivateFile->FileName, FileName);
+    }
   }
 
   //
-- 
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