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https://github.com/darlinghq/darling-corefoundation.git
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235 lines
10 KiB
C
235 lines
10 KiB
C
/*
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* Copyright (c) 2015 Apple Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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/* CFPlatformConverters.c
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Copyright (c) 1998-2014, Apple Inc. All rights reserved.
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Responsibility: Aki Inoue
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*/
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#include "CFInternal.h"
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#include <CoreFoundation/CFString.h>
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#include "CFStringEncodingConverterExt.h"
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#include <CoreFoundation/CFStringEncodingExt.h>
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#include "CFUniChar.h"
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#include "CFUnicodeDecomposition.h"
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#include "CFStringEncodingConverterPriv.h"
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#include "CFICUConverters.h"
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CF_INLINE bool __CFIsPlatformConverterAvailable(int encoding) {
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#if DEPLOYMENT_TARGET_WINDOWS
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return (IsValidCodePage(CFStringConvertEncodingToWindowsCodepage(encoding)) ? true : false);
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#else
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return false;
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#endif
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}
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#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED || DEPLOYMENT_TARGET_WINDOWS || DEPLOYMENT_TARGET_LINUX
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static const CFStringEncodingConverter __CFICUBootstrap = {
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NULL /* toBytes */, NULL /* toUnicode */, 6 /* maxBytesPerChar */, 4 /* maxDecomposedCharLen */,
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kCFStringEncodingConverterICU /* encodingClass */,
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NULL /* toBytesLen */, NULL /* toUnicodeLen */, NULL /* toBytesFallback */,
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NULL /* toUnicodeFallback */, NULL /* toBytesPrecompose */, NULL, /* isValidCombiningChar */
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};
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#endif
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static const CFStringEncodingConverter __CFPlatformBootstrap = {
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NULL /* toBytes */, NULL /* toUnicode */, 6 /* maxBytesPerChar */, 4 /* maxDecomposedCharLen */,
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kCFStringEncodingConverterPlatformSpecific /* encodingClass */,
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NULL /* toBytesLen */, NULL /* toUnicodeLen */, NULL /* toBytesFallback */,
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NULL /* toUnicodeFallback */, NULL /* toBytesPrecompose */, NULL, /* isValidCombiningChar */
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};
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CF_PRIVATE const CFStringEncodingConverter *__CFStringEncodingGetExternalConverter(uint32_t encoding) {
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// we prefer Text Encoding Converter ICU since it's more reliable
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if (__CFIsPlatformConverterAvailable(encoding)) {
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return &__CFPlatformBootstrap;
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} else {
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#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED || DEPLOYMENT_TARGET_WINDOWS || DEPLOYMENT_TARGET_LINUX
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if (__CFStringEncodingGetICUName(encoding)) {
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return &__CFICUBootstrap;
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}
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#endif
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return NULL;
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}
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}
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#if DEPLOYMENT_TARGET_MACOSX || DEPLOYMENT_TARGET_EMBEDDED
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CF_PRIVATE CFStringEncoding *__CFStringEncodingCreateListOfAvailablePlatformConverters(CFAllocatorRef allocator, CFIndex *numberOfConverters) {
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return NULL;
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}
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#elif DEPLOYMENT_TARGET_WINDOWS
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#include <tchar.h>
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static uint32_t __CFWin32EncodingIndex = 0;
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static CFStringEncoding *__CFWin32EncodingList = NULL;
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static char CALLBACK __CFWin32EnumCodePageProc(LPTSTR string) {
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uint32_t encoding = CFStringConvertWindowsCodepageToEncoding(_tcstoul(string, NULL, 10));
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CFIndex idx;
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if (encoding != kCFStringEncodingInvalidId) { // We list only encodings we know
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if (__CFWin32EncodingList) {
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for (idx = 0;idx < (CFIndex)__CFWin32EncodingIndex;idx++) if (__CFWin32EncodingList[idx] == encoding) break;
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if (idx != __CFWin32EncodingIndex) return true;
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__CFWin32EncodingList[__CFWin32EncodingIndex] = encoding;
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}
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++__CFWin32EncodingIndex;
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}
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return true;
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}
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CF_PRIVATE CFStringEncoding *__CFStringEncodingCreateListOfAvailablePlatformConverters(CFAllocatorRef allocator, CFIndex *numberOfConverters) {
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CFStringEncoding *encodings;
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EnumSystemCodePages((CODEPAGE_ENUMPROC)&__CFWin32EnumCodePageProc, CP_INSTALLED);
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__CFWin32EncodingList = (uint32_t *)CFAllocatorAllocate(allocator, sizeof(uint32_t) * __CFWin32EncodingIndex, 0);
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EnumSystemCodePages((CODEPAGE_ENUMPROC)&__CFWin32EnumCodePageProc, CP_INSTALLED);
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*numberOfConverters = __CFWin32EncodingIndex;
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encodings = __CFWin32EncodingList;
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__CFWin32EncodingIndex = 0;
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__CFWin32EncodingList = NULL;
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return encodings;
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}
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#else
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CF_PRIVATE CFStringEncoding *__CFStringEncodingCreateListOfAvailablePlatformConverters(CFAllocatorRef allocator, CFIndex *numberOfConverters) { return NULL; }
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#endif
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CF_PRIVATE CFIndex __CFStringEncodingPlatformUnicodeToBytes(uint32_t encoding, uint32_t flags, const UniChar *characters, CFIndex numChars, CFIndex *usedCharLen, uint8_t *bytes, CFIndex maxByteLen, CFIndex *usedByteLen) {
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#if DEPLOYMENT_TARGET_WINDOWS
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WORD dwFlags = 0;
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CFIndex usedLen;
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if ((kCFStringEncodingUTF7 != encoding) && (kCFStringEncodingGB_18030_2000 != encoding) && (0x0800 != (encoding & 0x0F00))) { // not UTF-7/GB18030/ISO-2022-*
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dwFlags |= (flags & (kCFStringEncodingAllowLossyConversion|kCFStringEncodingSubstituteCombinings) ? WC_DEFAULTCHAR : 0);
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dwFlags |= (flags & kCFStringEncodingComposeCombinings ? WC_COMPOSITECHECK : 0);
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dwFlags |= (flags & kCFStringEncodingIgnoreCombinings ? WC_DISCARDNS : 0);
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}
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if ((usedLen = WideCharToMultiByte(CFStringConvertEncodingToWindowsCodepage(encoding), dwFlags, (LPCWSTR)characters, numChars, (LPSTR)bytes, maxByteLen, NULL, NULL)) == 0) {
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if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
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CPINFO cpInfo;
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if (!GetCPInfo(CFStringConvertEncodingToWindowsCodepage(encoding), &cpInfo)) {
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cpInfo.MaxCharSize = 1; // Is this right ???
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}
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if (cpInfo.MaxCharSize == 1) {
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numChars = maxByteLen;
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} else {
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usedLen = WideCharToMultiByte(CFStringConvertEncodingToWindowsCodepage(encoding), dwFlags, (LPCWSTR)characters, numChars, NULL, 0, NULL, NULL);
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usedLen -= maxByteLen;
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numChars = (numChars > usedLen ? numChars - usedLen : 1);
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}
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if (WideCharToMultiByte(CFStringConvertEncodingToWindowsCodepage(encoding), dwFlags, (LPCWSTR)characters, numChars, (LPSTR)bytes, maxByteLen, NULL, NULL) == 0) {
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if (usedCharLen) *usedCharLen = 0;
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if (usedByteLen) *usedByteLen = 0;
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} else {
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CFIndex lastUsedLen = 0;
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while ((usedLen = WideCharToMultiByte(CFStringConvertEncodingToWindowsCodepage(encoding), dwFlags, (LPCWSTR)characters, ++numChars, (LPSTR)bytes, maxByteLen, NULL, NULL))) lastUsedLen = usedLen;
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if (usedCharLen) *usedCharLen = (numChars - 1);
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if (usedByteLen) *usedByteLen = lastUsedLen;
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}
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return kCFStringEncodingInsufficientOutputBufferLength;
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} else {
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return kCFStringEncodingInvalidInputStream;
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}
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} else {
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if (usedCharLen) *usedCharLen = numChars;
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if (usedByteLen) *usedByteLen = usedLen;
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return kCFStringEncodingConversionSuccess;
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}
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#endif /* DEPLOYMENT_TARGET_WINDOWS */
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return kCFStringEncodingConverterUnavailable;
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}
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CF_PRIVATE CFIndex __CFStringEncodingPlatformBytesToUnicode(uint32_t encoding, uint32_t flags, const uint8_t *bytes, CFIndex numBytes, CFIndex *usedByteLen, UniChar *characters, CFIndex maxCharLen, CFIndex *usedCharLen) {
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#if DEPLOYMENT_TARGET_WINDOWS
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WORD dwFlags = 0;
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CFIndex usedLen;
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if ((kCFStringEncodingUTF7 != encoding) && (kCFStringEncodingGB_18030_2000 != encoding) && (0x0800 != (encoding & 0x0F00))) { // not UTF-7/GB18030/ISO-2022-*
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dwFlags |= (flags & (kCFStringEncodingAllowLossyConversion|kCFStringEncodingSubstituteCombinings) ? 0 : MB_ERR_INVALID_CHARS);
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dwFlags |= (flags & (kCFStringEncodingUseCanonical|kCFStringEncodingUseHFSPlusCanonical) ? MB_COMPOSITE : MB_PRECOMPOSED);
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}
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if ((usedLen = MultiByteToWideChar(CFStringConvertEncodingToWindowsCodepage(encoding), dwFlags, (LPCSTR)bytes, numBytes, (LPWSTR)characters, maxCharLen)) == 0) {
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if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
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CPINFO cpInfo;
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if (!GetCPInfo(CFStringConvertEncodingToWindowsCodepage(encoding), &cpInfo)) {
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cpInfo.MaxCharSize = 1; // Is this right ???
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}
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if (cpInfo.MaxCharSize == 1) {
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numBytes = maxCharLen;
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} else {
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usedLen = MultiByteToWideChar(CFStringConvertEncodingToWindowsCodepage(encoding), dwFlags, (LPCSTR)bytes, numBytes, (LPWSTR)characters, maxCharLen);
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usedLen -= maxCharLen;
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numBytes = (numBytes > usedLen ? numBytes - usedLen : 1);
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}
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while ((usedLen = MultiByteToWideChar(CFStringConvertEncodingToWindowsCodepage(encoding), dwFlags, (LPCSTR)bytes, numBytes, (LPWSTR)characters, maxCharLen)) == 0) {
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if ((--numBytes) == 0) break;
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}
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if (usedCharLen) *usedCharLen = usedLen;
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if (usedByteLen) *usedByteLen = numBytes;
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return kCFStringEncodingInsufficientOutputBufferLength;
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} else {
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return kCFStringEncodingInvalidInputStream;
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}
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} else {
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if (usedCharLen) *usedCharLen = usedLen;
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if (usedByteLen) *usedByteLen = numBytes;
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return kCFStringEncodingConversionSuccess;
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}
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#endif /* DEPLOYMENT_TARGET_WINDOWS */
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return kCFStringEncodingConverterUnavailable;
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}
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CF_PRIVATE CFIndex __CFStringEncodingPlatformCharLengthForBytes(uint32_t encoding, uint32_t flags, const uint8_t *bytes, CFIndex numBytes) {
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CFIndex usedCharLen;
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return (__CFStringEncodingPlatformBytesToUnicode(encoding, flags, bytes, numBytes, NULL, NULL, 0, &usedCharLen) == kCFStringEncodingConversionSuccess ? usedCharLen : 0);
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}
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CF_PRIVATE CFIndex __CFStringEncodingPlatformByteLengthForCharacters(uint32_t encoding, uint32_t flags, const UniChar *characters, CFIndex numChars) {
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CFIndex usedByteLen;
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return (__CFStringEncodingPlatformUnicodeToBytes(encoding, flags, characters, numChars, NULL, NULL, 0, &usedByteLen) == kCFStringEncodingConversionSuccess ? usedByteLen : 0);
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}
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#undef __CFCarbonCore_GetTextEncodingBase0
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