[PATCH v4 2/7] MdePkg/BaseLib: Introduce CharToUpper and AsciiToUpper publicly

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

Introduce two public functions CharToUpper and AsciiToUpper.
They have the same functions as InternalCharToUpper and
InternalBaseLibAsciiToUpper.Considering the internal functions will
be removed,so directly I change their function names to the public ones'.
https://bugzilla.tianocore.org/show_bug.cgi?id=1369

Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
---
 MdePkg/Include/Library/BaseLib.h    | 40 +++++++++++++++++++++++++++++
 MdePkg/Library/BaseLib/SafeString.c |  8 +++---
 MdePkg/Library/BaseLib/String.c     | 16 ++++++------
 3 files changed, 52 insertions(+), 12 deletions(-)

diff --git a/MdePkg/Include/Library/BaseLib.h b/MdePkg/Include/Library/BaseLib.h
index 1eb842384e..e8cc121ddd 100644
--- a/MdePkg/Include/Library/BaseLib.h
+++ b/MdePkg/Include/Library/BaseLib.h
@@ -2720,6 +2720,46 @@ AsciiStrnToUnicodeStrS (
   OUT     UINTN                     *DestinationLength
   );
 
+/**
+  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
+EFIAPI
+CharToUpper (
+  IN      CHAR16                    Char
+  );
+
+/**
+  Converts a lowercase Ascii character to upper one.
+
+  If Chr is lowercase Ascii character, then converts it to upper one.
+
+  If Value >= 0xA0, then ASSERT().
+  If (Value & 0x0F) >= 0x0A, then ASSERT().
+
+  @param  Chr   one Ascii character
+
+  @return The uppercase value of Ascii character
+
+**/
+CHAR8
+EFIAPI
+AsciiToUpper (
+  IN      CHAR8                     Chr
+  );
+
 /**
   Converts an 8-bit value to an 8-bit BCD value.
 
diff --git a/MdePkg/Library/BaseLib/SafeString.c b/MdePkg/Library/BaseLib/SafeString.c
index 417497cbc9..17f88b46d8 100644
--- a/MdePkg/Library/BaseLib/SafeString.c
+++ b/MdePkg/Library/BaseLib/SafeString.c
@@ -905,7 +905,7 @@ StrHexToUintnS (
     String++;
   }
 
-  if (InternalCharToUpper (*String) == L'X') {
+  if (CharToUpper (*String) == L'X') {
     if (*(String - 1) != L'0') {
       *Data = 0;
       return RETURN_SUCCESS;
@@ -1036,7 +1036,7 @@ StrHexToUint64S (
     String++;
   }
 
-  if (InternalCharToUpper (*String) == L'X') {
+  if (CharToUpper (*String) == L'X') {
     if (*(String - 1) != L'0') {
       *Data = 0;
       return RETURN_SUCCESS;
@@ -2459,7 +2459,7 @@ AsciiStrHexToUintnS (
     String++;
   }
 
-  if (InternalBaseLibAsciiToUpper (*String) == 'X') {
+  if (AsciiToUpper (*String) == 'X') {
     if (*(String - 1) != '0') {
       *Data = 0;
       return RETURN_SUCCESS;
@@ -2586,7 +2586,7 @@ AsciiStrHexToUint64S (
     String++;
   }
 
-  if (InternalBaseLibAsciiToUpper (*String) == 'X') {
+  if (AsciiToUpper (*String) == 'X') {
     if (*(String - 1) != '0') {
       *Data = 0;
       return RETURN_SUCCESS;
diff --git a/MdePkg/Library/BaseLib/String.c b/MdePkg/Library/BaseLib/String.c
index e6df12797d..dba53779c9 100644
--- a/MdePkg/Library/BaseLib/String.c
+++ b/MdePkg/Library/BaseLib/String.c
@@ -552,7 +552,7 @@ InternalIsDecimalDigitCharacter (
 **/
 CHAR16
 EFIAPI
-InternalCharToUpper (
+CharToUpper (
   IN      CHAR16                    Char
   )
 {
@@ -586,7 +586,7 @@ InternalHexCharToUintn (
     return Char - L'0';
   }
 
-  return (10 + InternalCharToUpper (Char) - L'A');
+  return (10 + CharToUpper (Char) - L'A');
 }
 
 /**
@@ -1181,7 +1181,7 @@ AsciiStrCmp (
 **/
 CHAR8
 EFIAPI
-InternalBaseLibAsciiToUpper (
+AsciiToUpper (
   IN      CHAR8                     Chr
   )
 {
@@ -1211,7 +1211,7 @@ InternalAsciiHexCharToUintn (
     return Char - '0';
   }
 
-  return (10 + InternalBaseLibAsciiToUpper (Char) - 'A');
+  return (10 + AsciiToUpper (Char) - 'A');
 }
 
 
@@ -1260,13 +1260,13 @@ AsciiStriCmp (
   ASSERT (AsciiStrSize (FirstString));
   ASSERT (AsciiStrSize (SecondString));
 
-  UpperFirstString  = InternalBaseLibAsciiToUpper (*FirstString);
-  UpperSecondString = InternalBaseLibAsciiToUpper (*SecondString);
+  UpperFirstString  = AsciiToUpper (*FirstString);
+  UpperSecondString = AsciiToUpper (*SecondString);
   while ((*FirstString != '\0') && (*SecondString != '\0') && (UpperFirstString == UpperSecondString)) {
     FirstString++;
     SecondString++;
-    UpperFirstString  = InternalBaseLibAsciiToUpper (*FirstString);
-    UpperSecondString = InternalBaseLibAsciiToUpper (*SecondString);
+    UpperFirstString  = AsciiToUpper (*FirstString);
+    UpperSecondString = AsciiToUpper (*SecondString);
   }
 
   return UpperFirstString - UpperSecondString;
-- 
2.18.0.windows.1