mirror of https://github.com/acidanthera/audk.git
131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/** @file
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Print Library worker functions.
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Copyright (c) 2006, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: PrintLibInternal.c
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**/
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#include "PrintLibInternal.h"
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static CONST CHAR8 mHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
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CHAR8 *
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BasePrintLibFillBuffer (
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CHAR8 *Buffer,
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INTN Length,
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UINTN Character,
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INTN Increment
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)
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{
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INTN Index;
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for (Index = 0; Index < Length; Index++) {
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*Buffer = (CHAR8) Character;
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*(Buffer + 1) = (CHAR8) (Character >> 8);
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Buffer += Increment;
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}
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return Buffer;
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}
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/**
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Print worker function that prints a Value as a decimal number in Buffer.
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@param Buffer Location to place the Unicode or ASCII string of Value.
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@param Value Value to convert to a Decimal or Hexidecimal string in Buffer.
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@param Flags Flags to use in printing string, see file header for details.
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@param Precision Minimum number of digits to return in the ASCII string
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@return Number of characters printed.
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**/
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UINTN
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EFIAPI
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BasePrintLibValueToString (
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IN OUT CHAR8 *Buffer,
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IN INT64 Value,
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IN UINTN Radix
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)
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{
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UINTN Digits;
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UINT32 Remainder;
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//
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// Loop to convert one digit at a time in reverse order
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//
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*(Buffer++) = 0;
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Digits = 0;
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do {
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Value = (INT64)DivU64x32Remainder ((UINT64)Value, (UINT32)Radix, &Remainder);
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*(Buffer++) = mHexStr[Remainder];
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Digits++;
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} while (Value != 0);
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return Digits;
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}
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UINTN
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BasePrintLibConvertValueToString (
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IN OUT CHAR8 *Buffer,
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IN UINTN Flags,
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IN INT64 Value,
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IN UINTN Width,
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IN UINTN Increment
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)
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{
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CHAR8 *OriginalBuffer;
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CHAR8 ValueBuffer[MAXIMUM_VALUE_CHARACTERS];
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UINTN Count;
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UINTN Digits;
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UINTN Index;
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OriginalBuffer = Buffer;
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if (Width == 0 || (Flags & COMMA_TYPE) != 0) {
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Flags &= (~PREFIX_ZERO);
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}
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if (Width == 0 || Width > (MAXIMUM_VALUE_CHARACTERS - 1)) {
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Width = MAXIMUM_VALUE_CHARACTERS - 1;
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}
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if (Value < 0) {
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Value = -Value;
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Buffer = BasePrintLibFillBuffer (Buffer, 1, '-', Increment);
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}
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Count = BasePrintLibValueToString (ValueBuffer, Value, 10);
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if ((Flags & PREFIX_ZERO) != 0) {
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Buffer = BasePrintLibFillBuffer (Buffer, Width - Count, '0', Increment);
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}
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Digits = 3 - (Count % 3);
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for (Index = 0; Index < Count; Index++) {
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Buffer = BasePrintLibFillBuffer (Buffer, 1, ValueBuffer[Count - Index], Increment);
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if ((Flags & COMMA_TYPE) != 0) {
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Digits++;
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if (Digits == 3) {
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Digits = 0;
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if ((Index + 1) < Count) {
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Buffer = BasePrintLibFillBuffer (Buffer, 1, ',', Increment);
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}
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}
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}
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}
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Buffer = BasePrintLibFillBuffer (Buffer, 1, 0, Increment);
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return ((Buffer - OriginalBuffer) / Increment);
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}
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