CloverBootloader/rEFIt_UEFI/PlatformEFI/posix/posix_additions.cpp

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/*
* posix_additions.cpp
*
* Created on: Feb 5, 2021
* Author: jief
*/
#include "posix_additions.h"
#include "stdio.h"
#include "stddef.h"
/*
* We need to use AsciiSPrint to be able to use %r and %g
*/
extern "C" {
//# include <Library/UefiLib.h>
# include <Library/PrintLib.h>
// UINTN
// EFIAPI
// AsciiSPrint (
// OUT CHAR8 *StartOfBuffer,
// IN UINTN BufferSize,
// IN CONST CHAR8 *FormatString,
// ...
// );
}
#include "../../cpp_foundation/XString.h"
static XString8 stdio_static_buf = XString8().takeValueFrom("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX "); // prealloc stdio_static_buf. It has to be at least 2 chars because of 'while ( n > size - 2 )' in strguid and efiStrError
const char* efiStrError(EFI_STATUS Status)
{
size_t size = stdio_static_buf.allocatedSize();
UINTN n = 0;
n = AsciiSPrint(stdio_static_buf.dataSized(size-1), size-1, "%r", Status); // dataSized(size)-1 is important to avoid stdio_static_buf grow by 1 at each call.
while ( n > size - 3 )
{
size += 10;
n = AsciiSPrint(stdio_static_buf.dataSized(size), size, "%r", Status);
}
return stdio_static_buf.s();
}
2022-04-26 00:55:56 +02:00
//
////this function print guid in LittleEndian format while we need BigEndian as Apple do
//const char* strguid(const EFI_GUID& guid)
//{
// size_t size = stdio_static_buf.allocatedSize();
// UINTN n = 0;
// n = AsciiSPrint(stdio_static_buf.dataSized(size), size, "%g", &guid);
// while ( n > size - 2 )
// {
// size += 10;
// n = AsciiSPrint(stdio_static_buf.dataSized(size), size, "%g", &guid);
// }
// return stdio_static_buf.s();
//}