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ShellPkg: Add ShellHexStrToUintn to allow for simple conversion of hex numbers. 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Erik Bjorge <erik.c.bjorge@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14893 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jaben Carsey 2013-11-22 21:37:34 +00:00 committed by jcarsey
parent 541ddf4436
commit 74b0fb8c87
2 changed files with 43 additions and 0 deletions
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17
ShellPkg/Include/Library/ShellLib.h
View File

@ -1007,6 +1007,23 @@ ShellStrToUintn(
IN CONST CHAR16 *String
);
/**
Function return the number converted from a hex representation of a number.
Note: this function cannot be used when (UINTN)(-1), (0xFFFFFFFF) may be a valid
result. Use ShellConvertStringToUint64 instead.
@param[in] String String representation of a number.
@return The unsigned integer result of the conversion.
@retval (UINTN)(-1) An error occured.
**/
UINTN
EFIAPI
ShellHexStrToUintn(
IN CONST CHAR16 *String
);
/**
Safely append with automatic string resizing given length of Destination and
desired length of copy from Source.

26
ShellPkg/Library/UefiShellLib/UefiShellLib.c
View File

@ -3056,6 +3056,32 @@ ShellIsFileInPath(
return (Status);
}
/**
Function return the number converted from a hex representation of a number.
Note: this function cannot be used when (UINTN)(-1), (0xFFFFFFFF) may be a valid
result. Use ShellConvertStringToUint64 instead.
@param[in] String String representation of a number.
@return The unsigned integer result of the conversion.
@retval (UINTN)(-1) An error occured.
**/
UINTN
EFIAPI
ShellHexStrToUintn(
IN CONST CHAR16 *String
)
{
UINT64 RetVal;
if (!EFI_ERROR(ShellConvertStringToUint64(String, &RetVal, TRUE, TRUE))) {
return ((UINTN)RetVal);
}
return ((UINTN)(-1));
}
/**
Function to determine whether a string is decimal or hex representation of a number
and return the number converted from the string. Spaces are always skipped.