Blame src/string/ntapi_tt_dec_utf16_to_uintptr.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013--2018  Z. Gilboa                 */
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/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
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/********************************************************/
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#include <psxtypes/psxtypes.h>
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#include <ntapi/nt_status.h>
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#include "ntapi_impl.h"
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static int32_t __tt_dec_utf16_to_uint64(
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	__in	const wchar16_t *	wch_arg,
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	__in	const wchar16_t *	wch_cap,
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	__out	uint64_t *		key)
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{
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	int32_t			status;
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	uint64_t		lkey;
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	uint64_t		hkey;
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	const wchar16_t *	wch;
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	if (wch_cap <= wch_arg)
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		return NT_STATUS_INVALID_PARAMETER;
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	else if (wch_cap - wch_arg > 20)
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		return NT_STATUS_INVALID_PARAMETER;
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	lkey = 0;
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	hkey = 0;
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	if (wch_cap - wch_arg == 20) {
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		if ((status = __tt_dec_utf16_to_uint64(
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				&wch_arg[6],wch_cap,
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				&hkey)))
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			return status;
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		if (hkey > 18446744073709)
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			return NT_STATUS_INTEGER_OVERFLOW;
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		hkey   *= 1000000;
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		wch_cap = &wch_arg[6];
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	}
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	for (wch=wch_arg; wch
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		if ((*wch < '0') || (*wch > '9'))
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			return NT_STATUS_INVALID_PARAMETER;
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		lkey *= 10;
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		lkey += *wch - '0';
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	}
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	*key = lkey + hkey;
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	return NT_STATUS_SUCCESS;
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}
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int32_t __stdcall __ntapi_tt_dec_utf16_to_uint16(
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	__in	const wchar16_t *	wch_arg,
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	__in	const wchar16_t *	wch_cap,
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	__out	uint16_t *		key)
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{
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	int32_t		status;
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	uint64_t	skey;
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	uint16_t	rkey;
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	if ((status = __tt_dec_utf16_to_uint64(wch_arg,wch_cap,&skey)))
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		return status;
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	if ((rkey = skey) < skey)
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		return NT_STATUS_INTEGER_OVERFLOW;
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	*key = rkey;
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	return NT_STATUS_SUCCESS;
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}
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int32_t __stdcall __ntapi_tt_dec_utf16_to_uint32(
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	__in	const wchar16_t *	wch_arg,
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	__in	const wchar16_t *	wch_cap,
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	__out	uint32_t *		key)
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{
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	int32_t		status;
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	uint64_t	skey;
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	uint32_t	rkey;
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	if ((status = __tt_dec_utf16_to_uint64(wch_arg,wch_cap,&skey)))
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		return status;
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	if ((rkey = skey) < skey)
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		return NT_STATUS_INTEGER_OVERFLOW;
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	*key = rkey;
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	return NT_STATUS_SUCCESS;
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}
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int32_t __stdcall __ntapi_tt_dec_utf16_to_uint64(
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	__in	const wchar16_t *	wch_arg,
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	__in	const wchar16_t *	wch_cap,
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	__out	uint64_t *		key)
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{
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	return __tt_dec_utf16_to_uint64(
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		wch_arg,wch_cap,key);
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}
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#ifdef __NT32
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int32_t __stdcall __ntapi_tt_dec_utf16_to_uintptr(
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	__in	const wchar16_t *	wch_arg,
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	__in	const wchar16_t *	wch_cap,
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	__out	uintptr_t *		key)
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{
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	return __ntapi_tt_dec_utf16_to_uint32(
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		wch_arg,wch_cap,key);
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}
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#endif
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#ifdef __NT64
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int32_t __stdcall __ntapi_tt_dec_utf16_to_uintptr(
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	__in	const wchar16_t *	wch_arg,
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	__in	const wchar16_t *	wch_cap,
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	__out	uintptr_t *		key)
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{
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	return __tt_dec_utf16_to_uint64(
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		wch_arg,wch_cap,key);
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}
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#endif