CloverBootloader/rEFIt_UEFI/Platform/guid.h
jief666 975ac8f4fb Implement the possibility to cache XString size. Not activated.
Improve unicode_conversions.
Move strlen declaration to string.h.
2021-04-08 18:07:05 +03:00

228 lines
6.5 KiB
C++

/*
* guid.h
*
* Created on: 16 Apr 2020
* Author: jief
*/
#ifndef PLATFORM_GUID_H_
#define PLATFORM_GUID_H_
#include "../cpp_foundation/XStringArray.h"
#include "../cpp_foundation/unicode_conversions.h"
extern "C" {
#include <Uefi/UefiBaseType.h> // for EFI_GUID
}
extern "C" EFI_GUID gEfiMiscSubClassGuid;
extern const XString8 nullGuidAsString;
extern EFI_GUID nullGuid;
/** Returns TRUE is Str is ascii Guid in format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx */
template <typename T, typename IntegralType, enable_if( is_char(T) && is_integral(IntegralType) ) >
BOOLEAN IsValidGuidString(const T* Str, IntegralType n)
{
UINTN Index4IsValidGuidAsciiString; // stupid name to avoid warning : Declaration shadows a variable in the global namespace
if ( n != 36 ) {
return FALSE;
}
for (Index4IsValidGuidAsciiString = 0; Index4IsValidGuidAsciiString < 36; Index4IsValidGuidAsciiString++) {
if (Index4IsValidGuidAsciiString == 8 || Index4IsValidGuidAsciiString == 13 || Index4IsValidGuidAsciiString == 18 || Index4IsValidGuidAsciiString == 23) {
if (Str[Index4IsValidGuidAsciiString] != '-') {
return FALSE;
}
} else {
if (!(
(Str[Index4IsValidGuidAsciiString] >= '0' && Str[Index4IsValidGuidAsciiString] <= '9')
|| (Str[Index4IsValidGuidAsciiString] >= 'a' && Str[Index4IsValidGuidAsciiString] <= 'f')
|| (Str[Index4IsValidGuidAsciiString] >= 'A' && Str[Index4IsValidGuidAsciiString] <= 'F')
)
)
{
return FALSE;
}
}
}
return TRUE;
}
/** Returns TRUE is Str is ascii Guid in format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx */
template <typename T, enable_if( is___String(T) )>
BOOLEAN IsValidGuidString(const T& Str)
{
if ( Str.isEmpty() ) return false;
return IsValidGuidString(Str.data(), Str.length());
}
///** Returns TRUE is Str is ascii Guid in format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx */
//template <typename T, enable_if( is___String(T) )>
//BOOLEAN IsValidGuidAsciiString(const T& Str)
//{
// UINTN Index4IsValidGuidAsciiString; // stupid name to avoid warning : Declaration shadows a variable in the global namespace
//
// if ( Str.length() != 36 ) {
// return FALSE;
// }
//
// for (Index4IsValidGuidAsciiString = 0; Index4IsValidGuidAsciiString < 36; Index4IsValidGuidAsciiString++) {
// if (Index4IsValidGuidAsciiString == 8 || Index4IsValidGuidAsciiString == 13 || Index4IsValidGuidAsciiString == 18 || Index4IsValidGuidAsciiString == 23) {
// if (Str[Index4IsValidGuidAsciiString] != '-') {
// return FALSE;
// }
// } else {
// if (!(
// (Str[Index4IsValidGuidAsciiString] >= '0' && Str[Index4IsValidGuidAsciiString] <= '9')
// || (Str[Index4IsValidGuidAsciiString] >= 'a' && Str[Index4IsValidGuidAsciiString] <= 'f')
// || (Str[Index4IsValidGuidAsciiString] >= 'A' && Str[Index4IsValidGuidAsciiString] <= 'F')
// )
// )
// {
// return FALSE;
// }
// }
// }
//
// return TRUE;
//}
template <typename T, enable_if( is_char_ptr(T) || is___String(T) )>
EFI_STATUS
StrHToBuf (
OUT UINT8 *Buf,
IN UINTN BufferLength,
const T& t
)
{
UINTN Index4IsValidGuidAsciiString; // stupid name to avoid warning : Declaration shadows a variable in the global namespace
UINTN StrLength;
UINT8 Digit;
UINT8 Byte;
Digit = 0;
auto Str = _xstringarray__char_type<T>::getCharPtr(t);
//
// Two hex char make up one byte
//
StrLength = BufferLength * sizeof (CHAR16);
for(Index4IsValidGuidAsciiString = 0; Index4IsValidGuidAsciiString < StrLength; Index4IsValidGuidAsciiString++) {
if ((Str[Index4IsValidGuidAsciiString] >= (__typeof__(*Str))'a') && (Str[Index4IsValidGuidAsciiString] <= (__typeof__(*Str))'f')) {
Digit = (UINT8) (Str[Index4IsValidGuidAsciiString] - (__typeof__(*Str))'a' + 0x0A);
} else if ((Str[Index4IsValidGuidAsciiString] >= (__typeof__(*Str))'A') && (Str[Index4IsValidGuidAsciiString] <= (__typeof__(*Str))'F')) {
Digit = (UINT8) (Str[Index4IsValidGuidAsciiString] - L'A' + 0x0A);
} else if ((Str[Index4IsValidGuidAsciiString] >= (__typeof__(*Str))'0') && (Str[Index4IsValidGuidAsciiString] <= (__typeof__(*Str))'9')) {
Digit = (UINT8) (Str[Index4IsValidGuidAsciiString] - (__typeof__(*Str))'0');
} else {
return EFI_INVALID_PARAMETER;
}
//
// For odd characters, write the upper nibble for each buffer byte,
// and for even characters, the lower nibble.
//
if ((Index4IsValidGuidAsciiString & 1) == 0) {
Byte = (UINT8) (Digit << 4);
} else {
Byte = Buf[Index4IsValidGuidAsciiString / 2];
Byte &= 0xF0;
Byte = (UINT8) (Byte | Digit);
}
Buf[Index4IsValidGuidAsciiString / 2] = Byte;
}
return EFI_SUCCESS;
}
/*
* Convert a string to a GUID.
* First parameter can by of one of these type : char*, char16_t*, char32_t*, wchar_t*, XString8, XString16, XString32, XStringW
*/
template <typename T, enable_if( is_char_ptr(T) || is___String(T) )>
EFI_STATUS
StrToGuidLE (
const T& t,
OUT EFI_GUID *Guid
)
{
EFI_STATUS Status;
UINT8 GuidLE[16];
auto Str = _xstringarray__char_type<T>::getCharPtr(t);
Status = StrHToBuf (&GuidLE[0], 4, Str);
if ( Status != EFI_SUCCESS ) return Status;
while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {
Str ++;
}
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
Status = StrHToBuf (&GuidLE[4], 2, Str);
if ( Status != EFI_SUCCESS ) return Status;
while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {
Str ++;
}
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
Status = StrHToBuf (&GuidLE[6], 2, Str);
if ( Status != EFI_SUCCESS ) return Status;
while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {
Str ++;
}
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
Status = StrHToBuf (&GuidLE[8], 2, Str);
if ( Status != EFI_SUCCESS ) return Status;
while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {
Str ++;
}
if (IS_HYPHEN (*Str)) {
Str++;
} else {
return EFI_UNSUPPORTED;
}
Status = StrHToBuf (&GuidLE[10], 6, Str);
if ( Status != EFI_SUCCESS ) return Status;
if (Guid) {
CopyMem((UINT8*)Guid, &GuidLE[0], sizeof(EFI_GUID));
}
return EFI_SUCCESS;
}
XStringW GuidBeToStr(const EFI_GUID& Guid);
XString8 GuidLEToXString8(const EFI_GUID& Guid);
XStringW GuidLEToXStringW(const EFI_GUID& Guid);
#endif /* PLATFORM_GUID_H_ */