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

/*  ntapi: Native API core library                      */

/*  Copyright (C) 2013--2018  Z. Gilboa                 */

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

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

#include <psxtypes/psxtypes.h>

#include <ntapi/nt_status.h>

#include "ntapi_impl.h"

static void __tt_uintptr_to_mirrored_dec_utf8(

	uintptr_t	key,

	unsigned char *	buf,

	ssize_t *	arrlen)

{

	unsigned i;

	buf[0] = '0' + (key % 10);

	key   /= 10;

	for (i=1; key; i++) {

		buf[i] = '0' + (key % 10);

		key   /= 10;

	}

	*arrlen = i;

}

static int32_t __tt_uintptr_to_dec_utf16(

	uintptr_t	key,

	wchar16_t *	wstrbuf,

	size_t		buflen,

	ssize_t *	arrlen)

{

	ssize_t		i;

	ssize_t		slen;

	unsigned char	buf[24];

	__tt_uintptr_to_mirrored_dec_utf8(

		key,buf,arrlen);

	if ((i = *arrlen) > (slen = buflen))

		return NT_STATUS_BUFFER_TOO_SMALL;

	for (--i; i>=0; i--)

		*wstrbuf++ = buf[i];

	return NT_STATUS_SUCCESS;

}

static int32_t __tt_uintptr_to_dec_utf8(

	uintptr_t	key,

	unsigned char *	strbuf,

	size_t		buflen,

	ssize_t *	arrlen)

{

	ssize_t		i;

	ssize_t		slen;

	unsigned char	buf[24];

	__tt_uintptr_to_mirrored_dec_utf8(

		key,buf,arrlen);

	if ((i = *arrlen) > (slen = buflen))

		return NT_STATUS_BUFFER_TOO_SMALL;

	for (--i; i>=0; i--)

		*strbuf++ = buf[i];

	return NT_STATUS_SUCCESS;

}

int32_t __stdcall __ntapi_tt_uintptr_to_dec_utf16(

	__in	uintptr_t	key,

	__out	wchar16_t *	wstrbuf,

	__in	size_t		buflen,

	__out	ssize_t *	length)

{

	int32_t status;

	ssize_t	arrlen;

	buflen /= sizeof(wchar16_t);

	status = __tt_uintptr_to_dec_utf16(

		key,wstrbuf,

		buflen,&arrlen);

	*length = arrlen * sizeof(wchar16_t);

	return status;

}

int32_t __stdcall __ntapi_tt_uintptr_to_dec_utf8(

	__in	uintptr_t	key,

	__out	unsigned char *	strbuf,

	__in	size_t		buflen,

	__out	ssize_t *	length)

{

	return __tt_uintptr_to_dec_utf8(

		key,strbuf,

		buflen,length);

}

int32_t __stdcall __ntapi_tt_uintptr_to_dec_null_utf16(

	__in	uintptr_t	key,

	__out	wchar16_t *	wstrbuf,

	__in	size_t		buflen,

	__out	ssize_t *	length)

{

	int32_t status;

	ssize_t	arrlen;

	buflen -= sizeof(wchar16_t);

	buflen /= sizeof(wchar16_t);

	status = __tt_uintptr_to_dec_utf16(

		key,wstrbuf,

		buflen,&arrlen);

	if (status == NT_STATUS_SUCCESS)

		wstrbuf[arrlen] = 0;

	*length = ++arrlen * sizeof(wchar16_t);

	return status;

}

int32_t __stdcall __ntapi_tt_uintptr_to_dec_null_utf8(

	__in	uintptr_t	key,

	__out	unsigned char *	strbuf,

	__in	size_t		buflen,

	__out	ssize_t *	length)

{

	int32_t status;

	ssize_t	arrlen;

	status = __tt_uintptr_to_dec_utf8(

		key,strbuf,

		--buflen,&arrlen);

	if (status == NT_STATUS_SUCCESS)

		strbuf[arrlen] = 0;

	*length = ++arrlen;

	return status;

}