[PATCH v4 7/7] ShellPkg/UefiShellLib: Use BaseLib api CharToUpper

[Shenglei Zhang <shenglei.zhang@intel.com>]

Substitute InternalShellCharToUpper with CharToUpper which is a public
function with the same effect.
Remove the implement of InternalShellCharToUpper.
https://bugzilla.tianocore.org/show_bug.cgi?id=1369

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
---
 ShellPkg/Library/UefiShellLib/UefiShellLib.c | 31 ++------------------
 1 file changed, 2 insertions(+), 29 deletions(-)

diff --git a/ShellPkg/Library/UefiShellLib/UefiShellLib.c b/ShellPkg/Library/UefiShellLib/UefiShellLib.c
index b17266d623..aff933dcdf 100644
--- a/ShellPkg/Library/UefiShellLib/UefiShellLib.c
+++ b/ShellPkg/Library/UefiShellLib/UefiShellLib.c
@@ -3740,33 +3740,6 @@ ShellFileExists(
   return (EFI_SUCCESS);
 }
 
-/**
-  Convert a Unicode character to upper case only if
-  it maps to a valid small-case ASCII character.
-
-  This internal function only deal with Unicode character
-  which maps to a valid small-case ASCII character, i.e.
-  L'a' to L'z'. For other Unicode character, the input character
-  is returned directly.
-
-  @param  Char  The character to convert.
-
-  @retval LowerCharacter   If the Char is with range L'a' to L'z'.
-  @retval Unchanged        Otherwise.
-
-**/
-CHAR16
-InternalShellCharToUpper (
-  IN      CHAR16                    Char
-  )
-{
-  if (Char >= L'a' && Char <= L'z') {
-    return (CHAR16) (Char - (L'a' - L'A'));
-  }
-
-  return Char;
-}
-
 /**
   Convert a Unicode character to numerical value.
 
@@ -3789,7 +3762,7 @@ InternalShellHexCharToUintn (
     return Char - L'0';
   }
 
-  return (10 + InternalShellCharToUpper (Char) - L'A');
+  return (10 + CharToUpper (Char) - L'A');
 }
 
 /**
@@ -3849,7 +3822,7 @@ InternalShellStrHexToUint64 (
     String++;
   }
 
-  if (InternalShellCharToUpper (*String) == L'X') {
+  if (CharToUpper (*String) == L'X') {
     if (*(String - 1) != L'0') {
       return 0;
     }
-- 
2.18.0.windows.1