Add in the 1st version of ECP.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2832 6f19259b-4bc3-4df7-8a09-765794883524

EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/ValueToString.c

@@ -0,0 +1,213 @@
+/*++
+
+Copyright (c) 2004, Intel Corporation                                                         
+All rights reserved. This program and the accompanying materials                          
+are licensed and made available under the terms and conditions of the BSD License         
+which accompanies this distribution.  The full text of the license may be found at        
+http://opensource.org/licenses/bsd-license.php                                            
+                                                                                          
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+
+Module Name:
+
+  ValueToString.c
+
+Abstract:
+
+  Routines changing value to Hex or Dec string
+
+--*/
+
+#include "Tiano.h"
+#include "EfiDriverLib.h"
+
+static CHAR16 mHexStr[] = { L'0', L'1', L'2', L'3', L'4', L'5', L'6', L'7',
+                            L'8', L'9', L'A', L'B', L'C', L'D', L'E', L'F' };
+
+UINTN
+EfiValueToHexStr (
+  IN  OUT CHAR16  *Buffer, 
+  IN  UINT64      Value, 
+  IN  UINTN       Flags, 
+  IN  UINTN       Width
+  )
+/*++
+
+Routine Description:
+
+  VSPrint worker function that prints a Value as a hex number in Buffer
+
+Arguments:
+
+  Buffer - Location to place ascii hex string of Value.
+
+  Value  - Hex value to convert to a string in Buffer.
+
+  Flags  - Flags to use in printing Hex string, see file header for details.
+
+  Width  - Width of hex value.
+
+Returns: 
+
+  Number of characters printed.  
+
+--*/
+{
+  CHAR16  TempBuffer[CHARACTER_NUMBER_FOR_VALUE];
+  CHAR16  *TempStr;
+  CHAR16  Prefix;
+  CHAR16  *BufferPtr;
+  UINTN   Count;
+  UINTN   Index;
+
+  TempStr   = TempBuffer;
+  BufferPtr = Buffer;
+
+  //
+  // Count starts at one since we will null terminate. Each iteration of the
+  // loop picks off one nibble. Oh yea TempStr ends up backwards
+  //
+  Count = 0;
+  
+  if (Width > CHARACTER_NUMBER_FOR_VALUE - 1) {
+    Width = CHARACTER_NUMBER_FOR_VALUE - 1;
+  }
+
+  do {
+    Index = ((UINTN)Value & 0xf);
+    *(TempStr++) = mHexStr[Index];
+    Value = RShiftU64 (Value, 4);
+    Count++;
+  } while (Value != 0);
+
+  if (Flags & PREFIX_ZERO) {
+    Prefix = '0';
+  } else { 
+    Prefix = ' ';
+  }
+
+  Index = Count;
+  if (!(Flags & LEFT_JUSTIFY)) {
+    for (; Index < Width; Index++) {
+      *(TempStr++) = Prefix;
+    }
+  }
+
+  //
+  // Reverse temp string into Buffer.
+  //
+  if (Width > 0 && (UINTN) (TempStr - TempBuffer) > Width) {
+    TempStr = TempBuffer + Width;
+  }
+  Index = 0;
+  while (TempStr != TempBuffer) {
+    *(BufferPtr++) = *(--TempStr);
+    Index++;
+  }
+    
+  *BufferPtr = 0;
+  return Index;
+}
+
+
+UINTN
+EfiValueToString (
+  IN  OUT CHAR16  *Buffer, 
+  IN  INT64       Value, 
+  IN  UINTN       Flags,
+  IN  UINTN       Width
+  )
+/*++
+
+Routine Description:
+
+  VSPrint worker function that prints a Value as a decimal number in Buffer
+
+Arguments:
+
+  Buffer - Location to place ascii decimal number string of Value.
+
+  Value  - Decimal value to convert to a string in Buffer.
+
+  Flags  - Flags to use in printing decimal string, see file header for details.
+
+  Width  - Width of hex value.
+
+Returns: 
+
+  Number of characters printed.  
+
+--*/
+{
+  CHAR16    TempBuffer[CHARACTER_NUMBER_FOR_VALUE];
+  CHAR16    *TempStr;
+  CHAR16    *BufferPtr;
+  UINTN     Count;
+  UINTN     ValueCharNum;
+  UINTN     Remainder;
+  CHAR16    Prefix;
+  UINTN     Index;
+  BOOLEAN   ValueIsNegative;
+
+  TempStr         = TempBuffer;
+  BufferPtr       = Buffer;
+  Count           = 0;
+  ValueCharNum    = 0;
+  ValueIsNegative = FALSE;
+
+  if (Width > CHARACTER_NUMBER_FOR_VALUE - 1) {
+    Width = CHARACTER_NUMBER_FOR_VALUE - 1;
+  }
+
+  if (Value < 0) {
+    Value           = -Value;
+    ValueIsNegative = TRUE;
+  }
+
+  do {
+    Value = (INT64)DivU64x32 ((UINT64)Value, 10, &Remainder);
+    *(TempStr++) = (CHAR16)(Remainder + '0');
+    ValueCharNum++;
+    Count++;
+    if ((Flags & COMMA_TYPE) == COMMA_TYPE) {
+      if (ValueCharNum % 3 == 0 && Value != 0) {
+        *(TempStr++) = ',';
+        Count++;
+      }
+    }
+  } while (Value != 0);
+
+  if (ValueIsNegative) {
+    *(TempStr++)    = '-';
+    Count++;
+  }
+
+  if ((Flags & PREFIX_ZERO) && !ValueIsNegative) {
+    Prefix = '0';
+  } else { 
+    Prefix = ' ';
+  }                   
+
+  Index = Count;
+  if (!(Flags & LEFT_JUSTIFY)) {
+    for (; Index < Width; Index++) {
+      *(TempStr++) = Prefix;
+    }
+  }
+
+  //
+  // Reverse temp string into Buffer.
+  //
+  if (Width > 0 && (UINTN) (TempStr - TempBuffer) > Width) {
+    TempStr = TempBuffer + Width;
+  }
+  Index = 0;
+  while (TempStr != TempBuffer) {
+    *(BufferPtr++) = *(--TempStr);
+    Index++;
+  }
+
+  *BufferPtr = 0;
+  return Index;
+}