X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBasePrintLib%2FPrintLibInternal.c;h=675e2a80e28ede2ca5794b60f6b90be34f7a5e71;hp=3d2f2952f9ec73db12599ee917b180ab5f684384;hb=d958721a06dce3aa0fc941c115db86e3f91254f7;hpb=b0537818290619c85993136877afae37492fe5e0 diff --git a/MdePkg/Library/BasePrintLib/PrintLibInternal.c b/MdePkg/Library/BasePrintLib/PrintLibInternal.c index 3d2f2952f9..675e2a80e2 100644 --- a/MdePkg/Library/BasePrintLib/PrintLibInternal.c +++ b/MdePkg/Library/BasePrintLib/PrintLibInternal.c @@ -1,199 +1,209 @@ -/** @file - Print Library worker functions. - - Copyright (c) 2006, 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: PrintLibInternal.c - -**/ - -#include "PrintLibInternal.h" - -GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'}; - - -/** - Internal function that places the character into the Buffer. - - Internal function that places ASCII or Unicode character into the Buffer. - - @param Buffer Buffer to place the Unicode or ASCII string. - @param EndBuffer The end of the input Buffer. No characters will be - placed after that. - @param Length Count of character to be placed into Buffer. - @param Character Character to be placed into Buffer. - @param Increment Character increment in Buffer. - - @return Number of characters printed. - -**/ -CHAR8 * -BasePrintLibFillBuffer ( - CHAR8 *Buffer, - CHAR8 *EndBuffer, - INTN Length, - UINTN Character, - INTN Increment - ) -{ - INTN Index; - - for (Index = 0; Index < Length && Buffer < EndBuffer; Index++) { - *Buffer = (CHAR8) Character; - *(Buffer + 1) = (CHAR8) (Character >> 8); - Buffer += Increment; - } - return Buffer; -} - -/** - Internal function that convert a decimal number to a string in Buffer. - - Print worker function that convert a decimal number to a string 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 Radix Radix of the value - - @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; -} - -/** - Internal function that converts a decimal value to a Null-terminated string. - - Converts the decimal number specified by Value to a Null-terminated - string specified by Buffer containing at most Width characters. - If Width is 0 then a width of MAXIMUM_VALUE_CHARACTERS is assumed. - The number of characters in Buffer is returned not including the Null-terminator. - If the conversion contains more than Width characters, then only the first - Width characters are returned, and the total number of characters - required to perform the conversion is returned. - Additional conversion parameters are specified in Flags. - The Flags bit LEFT_JUSTIFY is always ignored. - All conversions are left justified in Buffer. - If Width is 0, PREFIX_ZERO is ignored in Flags. - If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and commas - are inserted every 3rd digit starting from the right. - If Value is < 0, then the fist character in Buffer is a '-'. - If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, - then Buffer is padded with '0' characters so the combination of the optional '-' - sign character, '0' characters, digit characters for Value, and the Null-terminator - add up to Width characters. - - If Buffer is NULL, then ASSERT(). - If unsupported bits are set in Flags, then ASSERT(). - If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT() - - @param Buffer Pointer to the output buffer for the produced Null-terminated - string. - @param Flags The bitmask of flags that specify left justification, zero pad, - and commas. - @param Value The 64-bit signed value to convert to a string. - @param Width The maximum number of characters to place in Buffer, not including - the Null-terminator. - @param Increment Character increment in Buffer. - - @return The number of characters in Buffer not including the Null-terminator. - -**/ -UINTN -BasePrintLibConvertValueToString ( - IN OUT CHAR8 *Buffer, - IN UINTN Flags, - IN INT64 Value, - IN UINTN Width, - IN UINTN Increment - ) -{ - CHAR8 *OriginalBuffer; - CHAR8 *EndBuffer; - CHAR8 ValueBuffer[MAXIMUM_VALUE_CHARACTERS]; - UINTN Count; - UINTN Digits; - UINTN Index; - - ASSERT (Buffer != NULL); - ASSERT (Width < MAXIMUM_VALUE_CHARACTERS); - // - // Make sure Flags can only contain supported bits. - // - ASSERT ((Flags & ~(LEFT_JUSTIFY | COMMA_TYPE | PREFIX_ZERO)) == 0); - - OriginalBuffer = Buffer; - - if (Width == 0 || (Flags & COMMA_TYPE) != 0) { - Flags &= (~PREFIX_ZERO); - } - - if (Width == 0) { - Width = MAXIMUM_VALUE_CHARACTERS - 1; - } - // - // Set the tag for the end of the input Buffer. - // - EndBuffer = Buffer + Width * Increment; - - if (Value < 0) { - Value = -Value; - Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, '-', Increment); - Width--; - } - - Count = BasePrintLibValueToString (ValueBuffer, Value, 10); - - if ((Flags & PREFIX_ZERO) != 0) { - Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Width - Count, '0', Increment); - } - - Digits = Count % 3; - if (Digits != 0) { - Digits = 3 - Digits; - } - for (Index = 0; Index < Count; Index++) { - Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ValueBuffer[Count - Index], Increment); - if ((Flags & COMMA_TYPE) != 0) { - Digits++; - if (Digits == 3) { - Digits = 0; - if ((Index + 1) < Count) { - Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ',', Increment); - } - } - } - } - - BasePrintLibFillBuffer (Buffer, EndBuffer + Increment, 1, 0, Increment); - - return ((Buffer - OriginalBuffer) / Increment); -} +/** @file + Print Library worker functions. + + Copyright (c) 2006 - 2007, 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: PrintLibInternal.c + +**/ + +#include "PrintLibInternal.h" + +GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'}; + + +/** + Internal function that places the character into the Buffer. + + Internal function that places ASCII or Unicode character into the Buffer. + + @param Buffer Buffer to place the Unicode or ASCII string. + @param EndBuffer The end of the input Buffer. No characters will be + placed after that. + @param Length Count of character to be placed into Buffer. + @param Character Character to be placed into Buffer. + @param Increment Character increment in Buffer. + + @return Number of characters printed. + +**/ +CHAR8 * +BasePrintLibFillBuffer ( + CHAR8 *Buffer, + CHAR8 *EndBuffer, + INTN Length, + UINTN Character, + INTN Increment + ) +{ + INTN Index; + + for (Index = 0; Index < Length && Buffer < EndBuffer; Index++) { + *Buffer = (CHAR8) Character; + *(Buffer + 1) = (CHAR8) (Character >> 8); + Buffer += Increment; + } + return Buffer; +} + +/** + Internal function that convert a decimal number to a string in Buffer. + + Print worker function that convert a decimal number to a string 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 Radix Radix of the value + + @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; +} + +/** + Internal function that converts a decimal value to a Null-terminated string. + + Converts the decimal number specified by Value to a Null-terminated + string specified by Buffer containing at most Width characters. + If Width is 0 then a width of MAXIMUM_VALUE_CHARACTERS is assumed. + The number of characters in Buffer is returned not including the Null-terminator. + If the conversion contains more than Width characters, then only the first + Width characters are returned, and the total number of characters + required to perform the conversion is returned. + Additional conversion parameters are specified in Flags. + The Flags bit LEFT_JUSTIFY is always ignored. + All conversions are left justified in Buffer. + If Width is 0, PREFIX_ZERO is ignored in Flags. + If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and commas + are inserted every 3rd digit starting from the right. + If HEX_RADIX is set in Flags, then the output buffer will be formatted in hexadecimal format. + If Value is < 0 and HEX_RADIX is not set in Flags, then the fist character in Buffer is a '-'. + If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, + then Buffer is padded with '0' characters so the combination of the optional '-' + sign character, '0' characters, digit characters for Value, and the Null-terminator + add up to Width characters. + If both COMMA_TYPE and HEX_RADIX are set in Flags, then ASSERT(). + + If Buffer is NULL, then ASSERT(). + If unsupported bits are set in Flags, then ASSERT(). + If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT() + + @param Buffer Pointer to the output buffer for the produced Null-terminated + string. + @param Flags The bitmask of flags that specify left justification, zero pad, + and commas. + @param Value The 64-bit signed value to convert to a string. + @param Width The maximum number of characters to place in Buffer, not including + the Null-terminator. + @param Increment Character increment in Buffer. + + @return The number of characters in Buffer not including the Null-terminator. + +**/ +UINTN +BasePrintLibConvertValueToString ( + IN OUT CHAR8 *Buffer, + IN UINTN Flags, + IN INT64 Value, + IN UINTN Width, + IN UINTN Increment + ) +{ + CHAR8 *OriginalBuffer; + CHAR8 *EndBuffer; + CHAR8 ValueBuffer[MAXIMUM_VALUE_CHARACTERS]; + UINTN Count; + UINTN Digits; + UINTN Index; + UINTN Radix; + + ASSERT (Buffer != NULL); + ASSERT (Width < MAXIMUM_VALUE_CHARACTERS); + // + // Make sure Flags can only contain supported bits. + // + ASSERT ((Flags & ~(LEFT_JUSTIFY | COMMA_TYPE | PREFIX_ZERO | RADIX_HEX)) == 0); + + // + // If both COMMA_TYPE and HEX_RADIX are set, then ASSERT () + // + ASSERT (((Flags & COMMA_TYPE) != 0 && (Flags & RADIX_HEX) != 0) == FALSE); + + OriginalBuffer = Buffer; + + if (Width == 0 || (Flags & COMMA_TYPE) != 0) { + Flags &= (~PREFIX_ZERO); + } + + if (Width == 0) { + Width = MAXIMUM_VALUE_CHARACTERS - 1; + } + // + // Set the tag for the end of the input Buffer. + // + EndBuffer = Buffer + Width * Increment; + + if ((Value < 0) && ((Flags & RADIX_HEX) == 0)) { + Value = -Value; + Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, '-', Increment); + Width--; + } + + Radix = ((Flags & RADIX_HEX) == 0)? 10 : 16; + Count = BasePrintLibValueToString (ValueBuffer, Value, Radix); + + if ((Flags & PREFIX_ZERO) != 0) { + Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, Width - Count, '0', Increment); + } + + Digits = Count % 3; + if (Digits != 0) { + Digits = 3 - Digits; + } + for (Index = 0; Index < Count; Index++) { + Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ValueBuffer[Count - Index], Increment); + if ((Flags & COMMA_TYPE) != 0) { + Digits++; + if (Digits == 3) { + Digits = 0; + if ((Index + 1) < Count) { + Buffer = BasePrintLibFillBuffer (Buffer, EndBuffer, 1, ',', Increment); + } + } + } + } + + BasePrintLibFillBuffer (Buffer, EndBuffer + Increment, 1, 0, Increment); + + return ((Buffer - OriginalBuffer) / Increment); +} +