Import some basic libraries instances for Mde Packages.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2704 6f19259b-4bc3-4df7-8a09-765794883524
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vanjeff
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MdePkg/Library/BasePrintLib/PrintLibInternal.c
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214
MdePkg/Library/BasePrintLib/PrintLibInternal.c
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/** @file
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Print Library worker functions.
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Copyright (c) 2006 - 2007, 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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//
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// Include common header file for this module.
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//
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#include "CommonHeader.h"
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#include "PrintLibInternal.h"
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GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
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/**
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Internal function that places the character into the Buffer.
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Internal function that places ASCII or Unicode character into the Buffer.
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@param Buffer Buffer to place the Unicode or ASCII string.
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@param EndBuffer The end of the input Buffer. No characters will be
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placed after that.
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@param Length Count of character to be placed into Buffer.
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@param Character Character to be placed into Buffer.
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@param Increment Character increment in Buffer.
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@return Number of characters printed.
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**/
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CHAR8 *
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BasePrintLibFillBuffer (
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CHAR8 *Buffer,
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CHAR8 *EndBuffer,
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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 && Buffer < EndBuffer; 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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Internal function that convert a decimal number to a string in Buffer.
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Print worker function that convert a decimal number to a string 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 Radix Radix of the value
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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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/**
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Internal function that converts a decimal value to a Null-terminated string.
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Converts the decimal number specified by Value to a Null-terminated
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string specified by Buffer containing at most Width characters.
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If Width is 0 then a width of MAXIMUM_VALUE_CHARACTERS is assumed.
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The number of characters in Buffer is returned not including the Null-terminator.
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If the conversion contains more than Width characters, then only the first
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Width characters are returned, and the total number of characters
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required to perform the conversion is returned.
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Additional conversion parameters are specified in Flags.
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The Flags bit LEFT_JUSTIFY is always ignored.
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All conversions are left justified in Buffer.
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If Width is 0, PREFIX_ZERO is ignored in Flags.
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If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and commas
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are inserted every 3rd digit starting from the right.
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If HEX_RADIX is set in Flags, then the output buffer will be formatted in hexadecimal format.
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If Value is < 0 and HEX_RADIX is not set in Flags, then the fist character in Buffer is a '-'.
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If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored,
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then Buffer is padded with '0' characters so the combination of the optional '-'
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sign character, '0' characters, digit characters for Value, and the Null-terminator
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add up to Width characters.
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If both COMMA_TYPE and HEX_RADIX are set in Flags, then ASSERT().
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If Buffer is NULL, then ASSERT().
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If unsupported bits are set in Flags, then ASSERT().
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If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT()
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@param Buffer Pointer to the output buffer for the produced Null-terminated
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string.
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@param Flags The bitmask of flags that specify left justification, zero pad,
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and commas.
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@param Value The 64-bit signed value to convert to a string.
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@param Width The maximum number of characters to place in Buffer, not including
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the Null-terminator.
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@param Increment Character increment in Buffer.
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@return The number of characters in Buffer not including the Null-terminator.
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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 *EndBuffer;
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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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UINTN Radix;
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ASSERT (Buffer != NULL);
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ASSERT (Width < MAXIMUM_VALUE_CHARACTERS);
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//
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// Make sure Flags can only contain supported bits.
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//
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ASSERT ((Flags & ~(LEFT_JUSTIFY | COMMA_TYPE | PREFIX_ZERO | RADIX_HEX)) == 0);
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//
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// If both COMMA_TYPE and HEX_RADIX are set, then ASSERT ()
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//
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ASSERT (((Flags & COMMA_TYPE) != 0 && (Flags & RADIX_HEX) != 0) == FALSE);
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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) {
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Width = MAXIMUM_VALUE_CHARACTERS - 1;
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}
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//
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// Set the tag for the end of the input Buffer.
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//
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EndBuffer = Buffer + Width * Increment;
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if ((Value < 0) && ((Flags & RADIX_HEX) == 0)) {
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Value = -Value;
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Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, '-', Increment);
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Width--;
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}
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Radix = ((Flags & RADIX_HEX) == 0)? 10 : 16;
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Count = BasePrintLibValueToString (ValueBuffer, Value, Radix);
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if ((Flags & PREFIX_ZERO) != 0) {
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Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Width - Count, '0', Increment);
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}
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Digits = Count % 3;
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if (Digits != 0) {
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Digits = 3 - Digits;
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}
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for (Index = 0; Index < Count; Index++) {
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Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 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, EndBuffer, 1, ',', Increment);
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}
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}
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}
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}
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BasePrintLibFillBuffer (Buffer, EndBuffer + Increment, 1, 0, Increment);
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return ((Buffer - OriginalBuffer) / Increment);
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}
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