+++ /dev/null
-/////////////////////////////////////////////////////////////////////////////
-// Name: src/mac/corefoundation/strconv.cpp
-// Purpose: Unicode conversion classes
-// Author: David Elliott
-// Modified by:
-// Created: 2007-07-06
-// RCS-ID: $Id$
-// Copyright: (c) 2007 David Elliott
-// Licence: wxWindows licence
-/////////////////////////////////////////////////////////////////////////////
-
-// For compilers that support precompilation, includes "wx.h".
-#include "wx/wxprec.h"
-
-#ifndef WX_PRECOMP
- #include "wx/string.h"
-#endif
-
-#include "wx/strconv.h"
-#include "wx/fontmap.h"
-
-#ifdef __DARWIN__
-
-#include "wx/mac/corefoundation/private/strconv_cf.h"
-#include "wx/mac/corefoundation/cfref.h"
-
-
-// ============================================================================
-// CoreFoundation conversion classes
-// ============================================================================
-
-/* Provide factory functions for unit tests. Not in any header. Do not
- * assume ABI compatibility even within a given wxWidgets release.
- */
-
-WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_cf( const char* name)
-{
- wxMBConv_cf *result = new wxMBConv_cf(name);
- if(!result->IsOk())
- {
- delete result;
- return NULL;
- }
- else
- return result;
-}
-
-WXDLLIMPEXP_BASE wxMBConv* new_wxMBConv_cf(wxFontEncoding encoding)
-{
- wxMBConv_cf *result = new wxMBConv_cf(encoding);
- if(!result->IsOk())
- {
- delete result;
- return NULL;
- }
- else
- return result;
-}
-
-// Provide a constant for the wchat_t encoding used by the host platform.
-#ifdef WORDS_BIGENDIAN
- static const CFStringEncoding wxCFStringEncodingWcharT = kCFStringEncodingUTF32BE;
-#else
- static const CFStringEncoding wxCFStringEncodingWcharT = kCFStringEncodingUTF32LE;
-#endif
-
- size_t wxMBConv_cf::ToWChar(wchar_t * dst, size_t dstSize, const char * src, size_t srcSize) const
- {
- wxCHECK(src, wxCONV_FAILED);
-
- /* NOTE: This is wrong if the source encoding has an element size
- * other than char (e.g. it's kCFStringEncodingUnicode)
- * If the user specifies it, it's presumably right though.
- * Right now we don't support UTF-16 in anyway since wx can do a better job.
- */
- if(srcSize == wxNO_LEN)
- srcSize = strlen(src) + 1;
-
- // First create the temporary CFString
- wxCFRef<CFStringRef> theString( CFStringCreateWithBytes (
- NULL, //the allocator
- (const UInt8*)src,
- srcSize,
- m_encoding,
- false //no BOM/external representation
- ));
-
- wxCHECK(theString != NULL, wxCONV_FAILED);
-
- /* NOTE: The string content includes the NULL element if the source string did
- * That means we have to do nothing special because the destination will have
- * the NULL element iff the source did and the NULL element will be included
- * in the count iff it was included in the source count.
- */
-
-
-/* If we're compiling against Tiger headers we can support direct conversion
- * to UTF32. If we are then run against a pre-Tiger system, the encoding
- * won't be available so we'll defer to the string->UTF-16->UTF-32 conversion.
- */
- if(CFStringIsEncodingAvailable(wxCFStringEncodingWcharT))
- {
- CFRange fullStringRange = CFRangeMake(0, CFStringGetLength(theString));
- CFIndex usedBufLen;
-
- CFIndex charsConverted = CFStringGetBytes(
- theString,
- fullStringRange,
- wxCFStringEncodingWcharT,
- 0,
- false,
- // if dstSize is 0 then pass NULL to get required length in usedBufLen
- dstSize != 0?(UInt8*)dst:NULL,
- dstSize * sizeof(wchar_t),
- &usedBufLen);
-
- // charsConverted is > 0 iff conversion succeeded
- if(charsConverted <= 0)
- return wxCONV_FAILED;
-
- /* usedBufLen is the number of bytes written, so we divide by
- * sizeof(wchar_t) to get the number of elements written.
- */
- wxASSERT( (usedBufLen % sizeof(wchar_t)) == 0 );
-
- // CFStringGetBytes does exactly the right thing when buffer
- // pointer is NULL and returns the number of bytes required
- return usedBufLen / sizeof(wchar_t);
- }
- else
- {
- // NOTE: Includes NULL iff source did
- /* NOTE: This is an approximation. The eventual UTF-32 will
- * possibly have less elements but certainly not more.
- */
- size_t returnSize = CFStringGetLength(theString);
-
- if (dstSize == 0 || dst == NULL)
- {
- return returnSize;
- }
-
- // Convert the entire string.. too hard to figure out how many UTF-16 we'd need
- // for an undersized UTF-32 destination buffer.
- CFRange fullStringRange = CFRangeMake(0, CFStringGetLength(theString));
- UniChar *szUniCharBuffer = new UniChar[fullStringRange.length];
-
- CFStringGetCharacters(theString, fullStringRange, szUniCharBuffer);
-
- wxMBConvUTF16 converter;
- returnSize = converter.ToWChar( dst, dstSize, (const char*)szUniCharBuffer, fullStringRange.length );
- delete [] szUniCharBuffer;
-
- return returnSize;
- }
- // NOTREACHED
- }
-
- size_t wxMBConv_cf::FromWChar(char *dst, size_t dstSize, const wchar_t *src, size_t srcSize) const
- {
- wxCHECK(src, wxCONV_FAILED);
-
- if(srcSize == wxNO_LEN)
- srcSize = wxStrlen(src) + 1;
-
- // Temporary CFString
- wxCFRef<CFStringRef> theString;
-
-/* If we're compiling against Tiger headers we can support direct conversion
- * from UTF32. If we are then run against a pre-Tiger system, the encoding
- * won't be available so we'll defer to the UTF-32->UTF-16->string conversion.
- */
- if(CFStringIsEncodingAvailable(wxCFStringEncodingWcharT))
- {
- theString = wxCFRef<CFStringRef>(CFStringCreateWithBytes(
- kCFAllocatorDefault,
- (UInt8*)src,
- srcSize * sizeof(wchar_t),
- wxCFStringEncodingWcharT,
- false));
- }
- else
- {
- wxMBConvUTF16 converter;
- size_t cbUniBuffer = converter.FromWChar( NULL, 0, src, srcSize );
- wxASSERT(cbUniBuffer % sizeof(UniChar));
-
- // Will be free'd by kCFAllocatorMalloc when CFString is released
- UniChar *tmpUniBuffer = (UniChar*)malloc(cbUniBuffer);
-
- cbUniBuffer = converter.FromWChar( (char*) tmpUniBuffer, cbUniBuffer, src, srcSize );
- wxASSERT(cbUniBuffer % sizeof(UniChar));
-
- theString = wxCFRef<CFStringRef>(CFStringCreateWithCharactersNoCopy(
- kCFAllocatorDefault,
- tmpUniBuffer,
- cbUniBuffer / sizeof(UniChar),
- kCFAllocatorMalloc
- ));
-
- }
-
- wxCHECK(theString != NULL, wxCONV_FAILED);
-
- CFIndex usedBufLen;
-
- CFIndex charsConverted = CFStringGetBytes(
- theString,
- CFRangeMake(0, CFStringGetLength(theString)),
- m_encoding,
- 0, // FAIL on unconvertible characters
- false, // not an external representation
- // if dstSize is 0 then pass NULL to get required length in usedBufLen
- (dstSize != 0)?(UInt8*)dst:NULL,
- dstSize,
- &usedBufLen
- );
-
- // charsConverted is > 0 iff conversion succeeded
- if(charsConverted <= 0)
- return wxCONV_FAILED;
-
- return usedBufLen;
- }
-
-#endif // __DARWIN__
-
-
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