diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/ValueToString.c')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/ValueToString.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/ValueToString.c b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/ValueToString.c new file mode 100644 index 0000000000..1d4c77eb97 --- /dev/null +++ b/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;
+}
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