BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1944

--exclude cannot be used under certain circumstances
1.The value of the parameter USES an absolute path
2.The value of Exclude parameters is based on the value
  of the Path parameter
Neither of these approaches currently works

This patch is going to fix that issue.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Bob Feng <bob.c.feng@intel.com>
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
---
keep original behavior on 
--exclude for the directory name or file name.

 BaseTools/Scripts/FormatDosFiles.py | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/BaseTools/Scripts/FormatDosFiles.py b/BaseTools/Scripts/FormatDosFiles.py
index d9a880f299..3150bef3c2 100644
--- a/BaseTools/Scripts/FormatDosFiles.py
+++ b/BaseTools/Scripts/FormatDosFiles.py
@@ -20,7 +20,7 @@ import copy
 
 __prog__        = 'FormatDosFiles'
 __version__     = '%s Version %s' % (__prog__, '0.10 ')
-__copyright__   = 'Copyright (c) 2018, Intel Corporation. All rights reserved.'
+__copyright__   = 'Copyright (c) 2018-2019, Intel Corporation. All rights reserved.'
 __description__ = 'Convert source files to meet the EDKII C Coding Standards Specification.\n'
 DEFAULT_EXT_LIST = ['.h', '.c', '.nasm', '.nasmb', '.asm', '.S', '.inf', '.dec', '.dsc', '.fdf', '.uni', '.asl', '.aslc', '.vfr', '.idf', '.txt', '.bat', '.py']
 
@@ -46,10 +46,26 @@ def FormatFile(FilePath, Args):
 def FormatFilesInDir(DirPath, ExtList, Args):
 
     FileList = []
+    ExcludeDir = DirPath
     for DirPath, DirNames, FileNames in os.walk(DirPath):
         if Args.Exclude:
             DirNames[:] = [d for d in DirNames if d not in Args.Exclude]
             FileNames[:] = [f for f in FileNames if f not in Args.Exclude]
+            Continue = False
+            for Path in Args.Exclude:
+                if not os.path.isdir(Path) and not os.path.isfile(Path):
+                    Path = os.path.join(ExcludeDir, Path)
+                if os.path.isdir(Path) and Path.endswith(DirPath):
+                    DirNames[:] = []
+                    Continue = True
+                elif os.path.isfile(Path):
+                    FilePaths = FileNames
+                    for ItemPath in FilePaths:
+                        FilePath = os.path.join(DirPath, ItemPath)
+                        if Path.endswith(FilePath):
+                            FileNames.remove(ItemPath)
+            if Continue:
+                continue
         for FileName in [f for f in FileNames if any(f.endswith(ext) for ext in ExtList)]:
                 FileList.append(os.path.join(DirPath, FileName))
     for File in FileList:
-- 
2.14.1.windows.1