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/** @file
Print Library worker functions.
Copyright (c) 2006, Intel Corporation<BR>
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: PrintLibInternal.c
**/
#include "PrintLibInternal.h"
static CONST CHAR8 mHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
CHAR8 *
BasePrintLibFillBuffer (
CHAR8 *Buffer,
INTN Length,
UINTN Character,
INTN Increment
)
{
INTN Index;
for (Index = 0; Index < Length; Index++) {
*Buffer = (CHAR8) Character;
*(Buffer + 1) = (CHAR8) (Character >> 8);
Buffer += Increment;
}
return Buffer;
}
/**
Print worker function that prints a Value as a decimal number in Buffer.
@param Buffer Location to place the Unicode or ASCII string of Value.
@param Value Value to convert to a Decimal or Hexidecimal string in Buffer.
@param Flags Flags to use in printing string, see file header for details.
@param Precision Minimum number of digits to return in the ASCII string
@return Number of characters printed.
**/
UINTN
EFIAPI
BasePrintLibValueToString (
IN OUT CHAR8 *Buffer,
IN INT64 Value,
IN UINTN Radix
)
{
UINTN Digits;
UINT32 Remainder;
//
// Loop to convert one digit at a time in reverse order
//
*(Buffer++) = 0;
Digits = 0;
do {
Value = (INT64)DivU64x32Remainder ((UINT64)Value, (UINT32)Radix, &Remainder);
*(Buffer++) = mHexStr[Remainder];
Digits++;
} while (Value != 0);
return Digits;
}
UINTN
BasePrintLibConvertValueToString (
IN OUT CHAR8 *Buffer,
IN UINTN Flags,
IN INT64 Value,
IN UINTN Width,
IN UINTN Increment
)
{
CHAR8 *OriginalBuffer;
CHAR8 ValueBuffer[MAXIMUM_VALUE_CHARACTERS];
UINTN Count;
UINTN Digits;
UINTN Index;
OriginalBuffer = Buffer;
if (Width == 0 || (Flags & COMMA_TYPE) != 0) {
Flags &= (~PREFIX_ZERO);
}
if (Width == 0 || Width > (MAXIMUM_VALUE_CHARACTERS - 1)) {
Width = MAXIMUM_VALUE_CHARACTERS - 1;
}
if (Value < 0) {
Value = -Value;
Buffer = BasePrintLibFillBuffer (Buffer, 1, '-', Increment);
}
Count = BasePrintLibValueToString (ValueBuffer, Value, 10);
if ((Flags & PREFIX_ZERO) != 0) {
Buffer = BasePrintLibFillBuffer (Buffer, Width - Count, '0', Increment);
}
Digits = 3 - (Count % 3);
for (Index = 0; Index < Count; Index++) {
Buffer = BasePrintLibFillBuffer (Buffer, 1, ValueBuffer[Count - Index], Increment);
if ((Flags & COMMA_TYPE) != 0) {
Digits++;
if (Digits == 3) {
Digits = 0;
if ((Index + 1) < Count) {
Buffer = BasePrintLibFillBuffer (Buffer, 1, ',', Increment);
}
}
}
}
Buffer = BasePrintLibFillBuffer (Buffer, 1, 0, Increment);
return ((Buffer - OriginalBuffer) / Increment);
}
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