#include "utility.h"

struct error_code_desc {
	EFI_STATUS code;
	CHAR16 *name;
};

// Based off the gnu-efi table
struct error_code_desc error_table[] = {
	{ EFI_SUCCESS,               L"Success" },
	{ EFI_LOAD_ERROR,            L"Load Error" },
	{ EFI_INVALID_PARAMETER,     L"Invalid Parameter" },
	{ EFI_UNSUPPORTED,           L"Unsupported" },
	{ EFI_BAD_BUFFER_SIZE,       L"Bad Buffer Size" },
	{ EFI_BUFFER_TOO_SMALL,      L"Buffer Too Small" },
	{ EFI_NOT_READY,             L"Not Ready" },
	{ EFI_DEVICE_ERROR,          L"Device Error" },
	{ EFI_WRITE_PROTECTED,       L"Write Protected" },
	{ EFI_OUT_OF_RESOURCES,      L"Out of Resources" },
	{ EFI_VOLUME_CORRUPTED,      L"Volume Corrupt" },
	{ EFI_VOLUME_FULL,           L"Volume Full" },
	{ EFI_NO_MEDIA,              L"No Media" },
	{ EFI_MEDIA_CHANGED,         L"Media changed" },
	{ EFI_NOT_FOUND,             L"Not Found" },
	{ EFI_ACCESS_DENIED,         L"Access Denied" },
	{ EFI_NO_RESPONSE,           L"No Response" },
	{ EFI_NO_MAPPING,            L"No mapping" },
	{ EFI_TIMEOUT,               L"Time out" },
	{ EFI_NOT_STARTED,           L"Not started" },
	{ EFI_ALREADY_STARTED,       L"Already started" },
	{ EFI_ABORTED,               L"Aborted" },
	{ EFI_ICMP_ERROR,            L"ICMP Error" },
	{ EFI_TFTP_ERROR,            L"TFTP Error" },
	{ EFI_PROTOCOL_ERROR,        L"Protocol Error" },
	{ EFI_INCOMPATIBLE_VERSION,  L"Incompatible Version" },
	{ EFI_SECURITY_VIOLATION,    L"Security Policy Violation" },
	{ EFI_CRC_ERROR,             L"CRC Error" },
	{ EFI_END_OF_MEDIA,          L"End of Media" },
	{ EFI_END_OF_FILE,           L"End of File" },
	{ EFI_INVALID_LANGUAGE,      L"Invalid Languages" },
	{ EFI_COMPROMISED_DATA,      L"Compromised Data" },

	{ EFI_WARN_UNKOWN_GLYPH,     L"Warning Unknown Glyph" },
	{ EFI_WARN_DELETE_FAILURE,   L"Warning Delete Failure" },
	{ EFI_WARN_WRITE_FAILURE,    L"Warning Write Failure" },
	{ EFI_WARN_BUFFER_TOO_SMALL, L"Warning Buffer Too Small" },
	{ 0, NULL }
};

const CHAR16 *
util_error_message(EFI_STATUS status)
{
	int32_t i = -1;
	while (error_table[++i].name != NULL) {
		if (error_table[i].code == status) return error_table[i].name;
	}

	if (EFI_ERROR(status))
		return L"Unknown Error";
	else
		return L"Unknown Warning";
}

size_t
wstrlen(const CHAR16 *s)
{
	size_t count = 0;
	while (s && *s++) count++;
	return count;
}