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/**
* WinPR: Windows Portable Runtime
* Unicode Conversion (CRT)
*
* Copyright 2022 Armin Novak <anovak@thincast.com>
* Copyright 2022 Thincast Technologies GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Foundation/Foundation.h>
#include <winpr/config.h>
#include <winpr/assert.h>
#include <errno.h>
#include <wctype.h>
#include <winpr/crt.h>
#include <winpr/error.h>
#include <winpr/print.h>
#ifndef MIN
#define MIN(a, b) (a) < (b) ? (a) : (b)
#endif
#include "../log.h"
#define TAG WINPR_TAG("unicode")
int int_MultiByteToWideChar(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte,
LPWSTR lpWideCharStr, int cchWideChar)
{
const BOOL isNullTerminated = cbMultiByte < 0;
/* If cbMultiByte is 0, the function fails */
if ((cbMultiByte == 0) || (cbMultiByte < -1))
return 0;
/* If cbMultiByte is -1, the string is null-terminated */
if (isNullTerminated)
{
size_t len = strnlen(lpMultiByteStr, INT32_MAX);
if (len >= INT32_MAX)
return 0;
cbMultiByte = (int)len + 1;
}
NSString *utf = [[NSString alloc] initWithBytes:lpMultiByteStr
length:cbMultiByte
encoding:NSUTF8StringEncoding];
if (!utf)
{
WLog_WARN(TAG, "[NSString alloc] NSUTF8StringEncoding failed [%d] '%s'", cbMultiByte,
lpMultiByteStr);
return -1;
}
const WCHAR *utf16 =
(const WCHAR *)[utf cStringUsingEncoding:NSUTF16LittleEndianStringEncoding];
const size_t utf16ByteLen = [utf lengthOfBytesUsingEncoding:NSUTF16LittleEndianStringEncoding];
const size_t utf16CharLen = utf16ByteLen / sizeof(WCHAR);
if (!utf16)
{
WLog_WARN(TAG, "[utf cStringUsingEncoding:NSUTF16LittleEndianStringEncoding] failed");
return -1;
}
if (cchWideChar == 0)
return utf16CharLen;
else if (cchWideChar < utf16CharLen)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
else
{
const size_t mlen = MIN((size_t)utf16CharLen, cchWideChar);
const size_t len = _wcsnlen(utf16, mlen);
memcpy(lpWideCharStr, utf16, len * sizeof(WCHAR));
if ((len < (size_t)cchWideChar) && (len > 0) && (lpWideCharStr[len - 1] != '\0'))
lpWideCharStr[len] = '\0';
return utf16CharLen;
}
}
int int_WideCharToMultiByte(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar,
LPBOOL lpUsedDefaultChar)
{
const BOOL isNullTerminated = cchWideChar < 0;
/* If cchWideChar is 0, the function fails */
if ((cchWideChar == 0) || (cchWideChar < -1))
return 0;
/* If cchWideChar is -1, the string is null-terminated */
if (isNullTerminated)
{
size_t len = _wcslen(lpWideCharStr);
if (len >= INT32_MAX)
return 0;
cchWideChar = (int)len + 1;
}
NSString *utf = [[NSString alloc] initWithCharacters:lpWideCharStr length:cchWideChar];
if (!utf)
{
WLog_WARN(TAG, "[NSString alloc] initWithCharacters failed [%d] 'XXX'", cchWideChar);
return -1;
}
const char *utf8 = [utf cStringUsingEncoding:NSUTF8StringEncoding];
const size_t utf8Len = [utf lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
if (!utf8)
{
WLog_WARN(TAG, "[utf cStringUsingEncoding:NSUTF8StringEncoding] failed");
return -1;
}
if (cbMultiByte == 0)
return utf8Len;
else if (cbMultiByte < utf8Len)
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
else
{
const size_t mlen = MIN((size_t)cbMultiByte, utf8Len);
const size_t len = strnlen(utf8, mlen);
memcpy(lpMultiByteStr, utf8, len * sizeof(char));
if ((len < (size_t)cbMultiByte) && (len > 0) && (lpMultiByteStr[len - 1] != '\0'))
lpMultiByteStr[len] = '\0';
return utf8Len;
}
}
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