BaseTools: Handle the bytes and str difference

Deal with bytes and str is different, remove the unicode(),
correct open file parameter.
Using utcfromtimestamp instead of fromtimestamp.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

BaseTools/Source/Python/Common/Misc.py

@@ -456,15 +456,22 @@ def RemoveDirectory(Directory, Recursively=False):
 #   @retval     False           If the file content is the same
 #
 def SaveFileOnChange(File, Content, IsBinaryFile=True):
-    if not IsBinaryFile:
-        Content = Content.replace("\n", os.linesep)
 
     if os.path.exists(File):
-        try:
-            if Content == open(File, "rb").read():
-                return False
-        except:
-            EdkLogger.error(None, FILE_OPEN_FAILURE, ExtraData=File)
+        if IsBinaryFile:
+            try:
+                with open(File, "rb") as f:
+                    if Content == f.read():
+                        return False
+            except:
+                EdkLogger.error(None, FILE_OPEN_FAILURE, ExtraData=File)
+        else:
+            try:
+                with open(File, "r") as f:
+                    if Content == f.read():
+                        return False
+            except:
+                EdkLogger.error(None, FILE_OPEN_FAILURE, ExtraData=File)
 
     DirName = os.path.dirname(File)
     if not CreateDirectory(DirName):
@@ -475,12 +482,18 @@ def SaveFileOnChange(File, Content, IsBinaryFile=True):
         if not os.access(DirName, os.W_OK):
             EdkLogger.error(None, PERMISSION_FAILURE, "Do not have write permission on directory %s" % DirName)
 
-    try:
-        Fd = open(File, "wb")
-        Fd.write(Content)
-        Fd.close()
-    except IOError as X:
-        EdkLogger.error(None, FILE_CREATE_FAILURE, ExtraData='IOError %s' % X)
+    if IsBinaryFile:
+        try:
+            with open(File, "wb") as Fd:
+                Fd.write(Content)
+        except IOError as X:
+            EdkLogger.error(None, FILE_CREATE_FAILURE, ExtraData='IOError %s' % X)
+    else:
+        try:
+            with open(File, 'w') as Fd:
+                Fd.write(Content)
+        except IOError as X:
+            EdkLogger.error(None, FILE_CREATE_FAILURE, ExtraData='IOError %s' % X)
 
     return True
 
@@ -1060,7 +1073,10 @@ def ParseFieldValue (Value):
         if Value[0] == '"' and Value[-1] == '"':
             Value = Value[1:-1]
         try:
-            Value = "'" + uuid.UUID(Value).bytes_le + "'"
+            Value = str(uuid.UUID(Value).bytes_le)
+            if Value.startswith("b'"):
+                Value = Value[2:-1]
+            Value = "'" + Value + "'"
         except ValueError as Message:
             raise BadExpression(Message)
         Value, Size = ParseFieldValue(Value)
@@ -1536,7 +1552,7 @@ class PeImageClass():
         ByteArray = array.array('B')
         ByteArray.fromfile(PeObject, 4)
         # PE signature should be 'PE\0\0'
-        if ByteArray.tostring() != 'PE\0\0':
+        if ByteArray.tostring() != b'PE\0\0':
             self.ErrorInfo = self.FileName + ' has no valid PE signature PE00'
             return
 
@@ -1752,7 +1768,7 @@ class SkuClass():
 #   @retval     Value    The integer value that the input represents
 #
 def GetIntegerValue(Input):
-    if type(Input) in (int, long):
+    if not isinstance(Input, str):
         return Input
     String = Input
     if String.endswith("U"):