#ifdef __WXMSW__
#include "wx/msw/private.h"
+ #include "wx/msw/missing.h"
#endif
#ifndef __WXWINCE__
return len ? len - 1 : (size_t)-1;
}
- size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const
- {
+ size_t WC2MB(char *buf, const wchar_t *pwz, size_t n) const
+ {
+ /*
+ we have a problem here: by default, WideCharToMultiByte() may
+ replace characters unrepresentable in the target code page with bad
+ quality approximations such as turning "1/2" symbol (U+00BD) into
+ "1" for the code pages which don't have it and we, obviously, want
+ to avoid this at any price
+
+ the trouble is that this function does it _silently_, i.e. it won't
+ even tell us whether it did or not... Win98/2000 and higher provide
+ WC_NO_BEST_FIT_CHARS but it doesn't work for the older systems and
+ we have to resort to a round trip, i.e. check that converting back
+ results in the same string -- this is, of course, expensive but
+ otherwise we simply can't be sure to not garble the data.
+ */
+
+ // determine if we can rely on WC_NO_BEST_FIT_CHARS: according to MSDN
+ // it doesn't work with CJK encodings (which we test for rather roughly
+ // here...) nor with UTF-7/8 nor, of course, with Windows versions not
+ // supporting it
+ BOOL usedDef wxDUMMY_INITIALIZE(false),
+ *pUsedDef;
+ int flags;
+ if ( CanUseNoBestFit() && m_CodePage < 50000 )
+ {
+ // it's our lucky day
+ flags = WC_NO_BEST_FIT_CHARS;
+ pUsedDef = &usedDef;
+ }
+ else // old system or unsupported encoding
+ {
+ flags = 0;
+ pUsedDef = NULL;
+ }
+
const size_t len = ::WideCharToMultiByte
(
m_CodePage, // code page
- 0, // flags (none)
- psz, // input string
+ flags, // either none or no best fit
+ pwz, // input string
-1, // it is (wide) NUL-terminated
buf, // output buffer
buf ? n : 0, // and its size
NULL, // default "replacement" char
- NULL // [out] was it used?
+ pUsedDef // [out] was it used?
);
+ if ( !len )
+ {
+ // function totally failed
+ return (size_t)-1;
+ }
+
+ // if we were really converting, check if we succeeded
+ if ( buf )
+ {
+ if ( flags )
+ {
+ // check if the conversion failed, i.e. if any replacements
+ // were done
+ if ( usedDef )
+ return (size_t)-1;
+ }
+ else // we must resort to double tripping...
+ {
+ wxWCharBuffer wcBuf(n);
+ if ( MB2WC(wcBuf.data(), buf, n) == (size_t)-1 ||
+ wcscmp(wcBuf, pwz) != 0 )
+ {
+ // we didn't obtain the same thing we started from, hence
+ // the conversion was lossy and we consider that it failed
+ return (size_t)-1;
+ }
+ }
+ }
+
// see the comment above for the reason of "len - 1"
- return len ? len - 1 : (size_t)-1;
+ return len - 1;
}
- bool IsOk() const
- { return m_CodePage != -1; }
+ bool IsOk() const { return m_CodePage != -1; }
+
+private:
+ static bool CanUseNoBestFit()
+ {
+ static int s_isWin98Or2k = -1;
+
+ if ( s_isWin98Or2k == -1 )
+ {
+ int verMaj, verMin;
+ switch ( wxGetOsVersion(&verMaj, &verMin) )
+ {
+ case wxWIN95:
+ s_isWin98Or2k = verMaj >= 4 && verMin >= 10;
+ break;
+
+ case wxWINDOWS_NT:
+ s_isWin98Or2k = verMaj >= 5;
+ break;
+
+ default:
+ // unknown, be conseravtive by default
+ s_isWin98Or2k = 0;
+ }
+
+ wxASSERT_MSG( s_isWin98Or2k != -1, _T("should be set above") );
+ }
+
+ return s_isWin98Or2k == 1;
+ }
-public:
long m_CodePage;
};
wxMBConv_mac(const wxChar* name)
{
- Init( EncodingToSystem(wxFontMapper::Get()->CharsetToEncoding(name, FALSE) ) ) ;
+ Init( wxMacGetSystemEncFromFontEnc(wxFontMapper::Get()->CharsetToEncoding(name, FALSE) ) ) ;
}
wxMBConv_mac(wxFontEncoding encoding)
{
- Init( EncodingToSystem(encoding) );
+ Init( wxMacGetSystemEncFromFontEnc(encoding) );
}
~wxMBConv_mac()
status = TECDisposeConverter(m_WC2MB_converter);
}
- static TextEncodingBase EncodingToSystem(wxFontEncoding encoding)
- {
- TextEncodingBase enc = CFStringGetSystemEncoding() ;
-
- switch( encoding)
- {
- case wxFONTENCODING_ISO8859_1 :
- enc = kTextEncodingISOLatin1 ;
- break ;
- case wxFONTENCODING_ISO8859_2 :
- enc = kTextEncodingISOLatin2;
- break ;
- case wxFONTENCODING_ISO8859_3 :
- enc = kTextEncodingISOLatin3 ;
- break ;
- case wxFONTENCODING_ISO8859_4 :
- enc = kTextEncodingISOLatin4;
- break ;
- case wxFONTENCODING_ISO8859_5 :
- enc = kTextEncodingISOLatinCyrillic;
- break ;
- case wxFONTENCODING_ISO8859_6 :
- enc = kTextEncodingISOLatinArabic;
- break ;
- case wxFONTENCODING_ISO8859_7 :
- enc = kTextEncodingISOLatinGreek;
- break ;
- case wxFONTENCODING_ISO8859_8 :
- enc = kTextEncodingISOLatinHebrew;
- break ;
- case wxFONTENCODING_ISO8859_9 :
- enc = kTextEncodingISOLatin5;
- break ;
- case wxFONTENCODING_ISO8859_10 :
- enc = kTextEncodingISOLatin6;
- break ;
- case wxFONTENCODING_ISO8859_13 :
- enc = kTextEncodingISOLatin7;
- break ;
- case wxFONTENCODING_ISO8859_14 :
- enc = kTextEncodingISOLatin8;
- break ;
- case wxFONTENCODING_ISO8859_15 :
- enc = kTextEncodingISOLatin9;
- break ;
-
- case wxFONTENCODING_KOI8 :
- enc = kTextEncodingKOI8_R;
- break ;
- case wxFONTENCODING_ALTERNATIVE : // MS-DOS CP866
- enc = kTextEncodingDOSRussian;
- break ;
-/*
- case wxFONTENCODING_BULGARIAN :
- enc = ;
- break ;
-*/
- case wxFONTENCODING_CP437 :
- enc =kTextEncodingDOSLatinUS ;
- break ;
- case wxFONTENCODING_CP850 :
- enc = kTextEncodingDOSLatin1;
- break ;
- case wxFONTENCODING_CP852 :
- enc = kTextEncodingDOSLatin2;
- break ;
- case wxFONTENCODING_CP855 :
- enc = kTextEncodingDOSCyrillic;
- break ;
- case wxFONTENCODING_CP866 :
- enc =kTextEncodingDOSRussian ;
- break ;
- case wxFONTENCODING_CP874 :
- enc = kTextEncodingDOSThai;
- break ;
- case wxFONTENCODING_CP932 :
- enc = kTextEncodingDOSJapanese;
- break ;
- case wxFONTENCODING_CP936 :
- enc =kTextEncodingDOSChineseSimplif ;
- break ;
- case wxFONTENCODING_CP949 :
- enc = kTextEncodingDOSKorean;
- break ;
- case wxFONTENCODING_CP950 :
- enc = kTextEncodingDOSChineseTrad;
- break ;
-
- case wxFONTENCODING_CP1250 :
- enc = kTextEncodingWindowsLatin2;
- break ;
- case wxFONTENCODING_CP1251 :
- enc =kTextEncodingWindowsCyrillic ;
- break ;
- case wxFONTENCODING_CP1252 :
- enc =kTextEncodingWindowsLatin1 ;
- break ;
- case wxFONTENCODING_CP1253 :
- enc = kTextEncodingWindowsGreek;
- break ;
- case wxFONTENCODING_CP1254 :
- enc = kTextEncodingWindowsLatin5;
- break ;
- case wxFONTENCODING_CP1255 :
- enc =kTextEncodingWindowsHebrew ;
- break ;
- case wxFONTENCODING_CP1256 :
- enc =kTextEncodingWindowsArabic ;
- break ;
- case wxFONTENCODING_CP1257 :
- enc = kTextEncodingWindowsBalticRim;
- break ;
-
- case wxFONTENCODING_UTF7 :
- enc = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicodeUTF7Format) ;
- break ;
- case wxFONTENCODING_UTF8 :
- enc = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicodeUTF8Format) ;
- break ;
- case wxFONTENCODING_EUC_JP :
- enc = kTextEncodingEUC_JP;
- break ;
- case wxFONTENCODING_UTF16BE :
- enc = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ;
- break ;
- case wxFONTENCODING_UTF16LE :
- enc = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ;
- break ;
- case wxFONTENCODING_UTF32BE :
- enc = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode32BitFormat) ;
- break ;
- case wxFONTENCODING_UTF32LE :
- enc = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode32BitFormat) ;
- break ;
- } ;
- return enc ;
- }
void Init( TextEncodingBase encoding)
{
OSStatus status = noErr ;
ByteCount byteOutLen ;
ByteCount byteInLen = strlen(psz) ;
- ByteCount byteBufferLen = n ;
wchar_t *tbuf = NULL ;
if (buf == NULL)
{
- n = byteInLen * SIZEOF_WCHAR_T ;
- tbuf = (wchar_t*) malloc( n ) ;
+ n = byteInLen ;
+ tbuf = (wchar_t*) malloc( n * SIZEOF_WCHAR_T) ;
}
+ ByteCount byteBufferLen = n * SIZEOF_WCHAR_T ;
status = TECConvertText(m_MB2WC_converter, (ConstTextPtr) psz , byteInLen, &byteInLen,
(TextPtr) (buf ? buf : tbuf) , byteBufferLen, &byteOutLen);
OSStatus status = noErr ;
ByteCount byteOutLen ;
ByteCount byteInLen = wxWcslen(psz) * SIZEOF_WCHAR_T ;
- ByteCount byteBufferLen = n ;
char *tbuf = NULL ;
if (buf == NULL)
{
- n = byteInLen ;
+ // worst case
+ n = byteInLen * 2 ;
tbuf = (char*) malloc( n ) ;
}
+ ByteCount byteBufferLen = n ;
status = TECConvertText(m_WC2MB_converter, (ConstTextPtr) psz , byteInLen, &byteInLen,
(TextPtr) ( buf ? buf : tbuf ) , byteBufferLen, &byteOutLen);
projects / wxWidgets.git / blobdiff