/********************************************************/

/*  ntapi: Native API core library                      */

/*  Copyright (C) 2013--2021  SysDeer Technologies, LLC */

/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */

/********************************************************/

#include <psxtypes/psxtypes.h>

#include <ntapi/nt_status.h>

#include "ntapi_impl.h"

static int32_t __tt_dec_utf16_to_uint64(

	__in	const wchar16_t *	wch_arg,

	__in	const wchar16_t *	wch_cap,

	__out	uint64_t *		key)

{

	int32_t			status;

	uint64_t		lkey;

	uint64_t		hkey;

	const wchar16_t *	wch;

	if (wch_cap <= wch_arg)

		return NT_STATUS_INVALID_PARAMETER;

	else if (wch_cap - wch_arg > 20)

		return NT_STATUS_INVALID_PARAMETER;

	lkey = 0;

	hkey = 0;

	if (wch_cap - wch_arg == 20) {

		if ((status = __tt_dec_utf16_to_uint64(

				&wch_arg[6],wch_cap,

				&hkey)))

			return status;

		if (hkey > 18446744073709)

			return NT_STATUS_INTEGER_OVERFLOW;

		hkey   *= 1000000;

		wch_cap = &wch_arg[6];

	}

	for (wch=wch_arg; wch

		if ((*wch < '0') || (*wch > '9'))

			return NT_STATUS_INVALID_PARAMETER;

		lkey *= 10;

		lkey += *wch - '0';

	}

	*key = lkey + hkey;

	return NT_STATUS_SUCCESS;

}

int32_t __stdcall __ntapi_tt_dec_utf16_to_uint16(

	__in	const wchar16_t *	wch_arg,

	__in	const wchar16_t *	wch_cap,

	__out	uint16_t *		key)

{

	int32_t		status;

	uint64_t	skey;

	uint16_t	rkey;

	if ((status = __tt_dec_utf16_to_uint64(wch_arg,wch_cap,&skey)))

		return status;

	if ((rkey = skey) < skey)

		return NT_STATUS_INTEGER_OVERFLOW;

	*key = rkey;

	return NT_STATUS_SUCCESS;

}

int32_t __stdcall __ntapi_tt_dec_utf16_to_uint32(

	__in	const wchar16_t *	wch_arg,

	__in	const wchar16_t *	wch_cap,

	__out	uint32_t *		key)

{

	int32_t		status;

	uint64_t	skey;

	uint32_t	rkey;

	if ((status = __tt_dec_utf16_to_uint64(wch_arg,wch_cap,&skey)))

		return status;

	if ((rkey = skey) < skey)

		return NT_STATUS_INTEGER_OVERFLOW;

	*key = rkey;

	return NT_STATUS_SUCCESS;

}

int32_t __stdcall __ntapi_tt_dec_utf16_to_uint64(

	__in	const wchar16_t *	wch_arg,

	__in	const wchar16_t *	wch_cap,

	__out	uint64_t *		key)

{

	return __tt_dec_utf16_to_uint64(

		wch_arg,wch_cap,key);

}

#ifdef __NT32

int32_t __stdcall __ntapi_tt_dec_utf16_to_uintptr(

	__in	const wchar16_t *	wch_arg,

	__in	const wchar16_t *	wch_cap,

	__out	uintptr_t *		key)

{

	return __ntapi_tt_dec_utf16_to_uint32(

		wch_arg,wch_cap,key);

}

#endif

#ifdef __NT64

int32_t __stdcall __ntapi_tt_dec_utf16_to_uintptr(

	__in	const wchar16_t *	wch_arg,

	__in	const wchar16_t *	wch_cap,

	__out	uintptr_t *		key)

{

	return __tt_dec_utf16_to_uint64(

		wch_arg,wch_cap,key);

}

#endif