#include "wx/msw/private.h"
#endif
+#ifdef __WINDOWS__
+ #include "wx/msw/missing.h"
+#endif
+
#ifndef __WXWINCE__
#include <errno.h>
#endif
#include "wx/encconv.h"
#include "wx/fontmap.h"
+#include "wx/utils.h"
#ifdef __WXMAC__
-#include "ATSUnicode.h"
-#include "TextCommon.h"
-#include "TextEncodingConverter.h"
+#include <ATSUnicode.h>
+#include <TextCommon.h>
+#include <TextEncodingConverter.h>
#include "wx/mac/private.h" // includes mac headers
#endif
{
// now do the actual conversion
wxWCharBuffer buf(nLen);
- MB2WC(buf.data(), psz, nLen + 1); // with the trailing NUL
-
- return buf;
+ nLen = MB2WC(buf.data(), psz, nLen + 1); // with the trailing NULL
+ if ( nLen != (size_t)-1 )
+ {
+ return buf;
+ }
}
}
if ( nLen != (size_t)-1 )
{
wxCharBuffer buf(nLen+3); // space for a wxUint32 trailing zero
- WC2MB(buf.data(), pwz, nLen + 4);
-
- return buf;
+ nLen = WC2MB(buf.data(), pwz, nLen + 4);
+ if ( nLen != (size_t)-1 )
+ {
+ return buf;
+ }
}
}
{
ms_wcCharsetName = NULL;
- // VS: we must not output an error here, since wxWindows will safely
+ // VS: we must not output an error here, since wxWidgets will safely
// fall back to using wxEncodingConverter.
wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name);
//wxLogError(
#ifdef wxHAVE_WIN32_MB2WC
// from utils.cpp
+#if wxUSE_FONTMAP
extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const wxChar *charset);
extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
+#endif
class wxMBConv_win32 : public wxMBConv
{
m_CodePage = CP_ACP;
}
+#if wxUSE_FONTMAP
wxMBConv_win32(const wxChar* name)
{
m_CodePage = wxCharsetToCodepage(name);
{
m_CodePage = wxEncodingToCodepage(encoding);
}
+#endif
size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
+ // note that we have to use MB_ERR_INVALID_CHARS flag as it without it
+ // the behaviour is not compatible with the Unix version (using iconv)
+ // and break the library itself, e.g. wxTextInputStream::NextChar()
+ // wouldn't work if reading an incomplete MB char didn't result in an
+ // error
const size_t len = ::MultiByteToWideChar
(
m_CodePage, // code page
- 0, // flags (none)
+ MB_ERR_INVALID_CHARS, // flags: fall on error
psz, // input string
-1, // its length (NUL-terminated)
buf, // output string
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( wxMacGetSystemEncFromFontEnc(wxFontMapper::Get()->CharsetToEncoding(name, FALSE) ) ) ;
+ Init( wxMacGetSystemEncFromFontEnc(wxFontMapper::Get()->CharsetToEncoding(name, false) ) ) ;
}
wxMBConv_mac(wxFontEncoding encoding)
{
- Init( wxMacGetSystemEncFromFontEnc(encoding) );
- }
-
- ~wxMBConv_mac()
- {
- OSStatus status = noErr ;
- status = TECDisposeConverter(m_MB2WC_converter);
- status = TECDisposeConverter(m_WC2MB_converter);
- }
-
-
- void Init( TextEncodingBase encoding)
- {
- OSStatus status = noErr ;
- m_char_encoding = encoding ;
-#if SIZEOF_WCHAR_T == 4
- m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode32BitFormat) ;
-#else
- m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ;
-#endif
- status = TECCreateConverter(&m_MB2WC_converter,
- m_char_encoding,
- m_unicode_encoding);
- status = TECCreateConverter(&m_WC2MB_converter,
- m_unicode_encoding,
- m_char_encoding);
- }
-
+ Init( wxMacGetSystemEncFromFontEnc(encoding) );
+ }
+
+ ~wxMBConv_mac()
+ {
+ OSStatus status = noErr ;
+ status = TECDisposeConverter(m_MB2WC_converter);
+ status = TECDisposeConverter(m_WC2MB_converter);
+ }
+
+
+ void Init( TextEncodingBase encoding)
+ {
+ OSStatus status = noErr ;
+ m_char_encoding = encoding ;
+ m_unicode_encoding = CreateTextEncoding(kTextEncodingUnicodeDefault,0,kUnicode16BitFormat) ;
+
+ status = TECCreateConverter(&m_MB2WC_converter,
+ m_char_encoding,
+ m_unicode_encoding);
+ status = TECCreateConverter(&m_WC2MB_converter,
+ m_unicode_encoding,
+ m_char_encoding);
+ }
+
size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const
{
- 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 ) ;
- }
-
- status = TECConvertText(m_MB2WC_converter, (ConstTextPtr) psz , byteInLen, &byteInLen,
- (TextPtr) (buf ? buf : tbuf) , byteBufferLen, &byteOutLen);
-
- if ( buf == NULL )
- free(tbuf) ;
-
- size_t res = byteOutLen / SIZEOF_WCHAR_T ;
+ OSStatus status = noErr ;
+ ByteCount byteOutLen ;
+ ByteCount byteInLen = strlen(psz) ;
+ wchar_t *tbuf = NULL ;
+ UniChar* ubuf = NULL ;
+ size_t res = 0 ;
+
+ if (buf == NULL)
+ {
+ n = byteInLen ;
+ tbuf = (wchar_t*) malloc( n * SIZEOF_WCHAR_T) ;
+ }
+ ByteCount byteBufferLen = n * sizeof( UniChar ) ;
+#if SIZEOF_WCHAR_T == 4
+ ubuf = (UniChar*) malloc( byteBufferLen + 2 ) ;
+#else
+ ubuf = (UniChar*) (buf ? buf : tbuf) ;
+#endif
+ status = TECConvertText(m_MB2WC_converter, (ConstTextPtr) psz , byteInLen, &byteInLen,
+ (TextPtr) ubuf , byteBufferLen, &byteOutLen);
+#if SIZEOF_WCHAR_T == 4
+ // we have to terminate here, because n might be larger for the trailing zero, and if UniChar
+ // is not properly terminated we get random characters at the end
+ ubuf[byteOutLen / sizeof( UniChar ) ] = 0 ;
+ wxMBConvUTF16BE converter ;
+ res = converter.MB2WC( (buf ? buf : tbuf) , (const char*)ubuf , n ) ;
+ free( ubuf ) ;
+#else
+ res = byteOutLen / sizeof( UniChar ) ;
+#endif
+ if ( buf == NULL )
+ free(tbuf) ;
+
if ( buf && res < n)
buf[res] = 0;
- return res ;
+ return res ;
}
size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const
- {
- OSStatus status = noErr ;
- ByteCount byteOutLen ;
- ByteCount byteInLen = wxWcslen(psz) * SIZEOF_WCHAR_T ;
- ByteCount byteBufferLen = n ;
-
- char *tbuf = NULL ;
-
- if (buf == NULL)
- {
- n = byteInLen ;
- tbuf = (char*) malloc( n ) ;
- }
-
- status = TECConvertText(m_WC2MB_converter, (ConstTextPtr) psz , byteInLen, &byteInLen,
- (TextPtr) ( buf ? buf : tbuf ) , byteBufferLen, &byteOutLen);
-
- if ( buf == NULL )
- free(tbuf) ;
-
- size_t res = byteOutLen ;
+ {
+ OSStatus status = noErr ;
+ ByteCount byteOutLen ;
+ ByteCount byteInLen = wxWcslen(psz) * SIZEOF_WCHAR_T ;
+
+ char *tbuf = NULL ;
+
+ if (buf == NULL)
+ {
+ // worst case
+ n = byteInLen * 2 ;
+ tbuf = (char*) malloc( n ) ;
+ }
+
+ ByteCount byteBufferLen = n ;
+ UniChar* ubuf = NULL ;
+#if SIZEOF_WCHAR_T == 4
+ wxMBConvUTF16BE converter ;
+ size_t unicharlen = converter.WC2MB( NULL , psz , 0 ) ;
+ byteInLen = unicharlen ;
+ ubuf = (UniChar*) malloc( byteInLen + 2 ) ;
+ converter.WC2MB( (char*) ubuf , psz, unicharlen + 2 ) ;
+#else
+ ubuf = (UniChar*) psz ;
+#endif
+ status = TECConvertText(m_WC2MB_converter, (ConstTextPtr) ubuf , byteInLen, &byteInLen,
+ (TextPtr) (buf ? buf : tbuf) , byteBufferLen, &byteOutLen);
+#if SIZEOF_WCHAR_T == 4
+ free( ubuf ) ;
+#endif
+ if ( buf == NULL )
+ free(tbuf) ;
+
+ size_t res = byteOutLen ;
if ( buf && res < n)
buf[res] = 0;
- return res ;
+ return res ;
}
bool IsOk() const
{ return m_MB2WC_converter != NULL && m_WC2MB_converter != NULL ; }
private:
- TECObjectRef m_MB2WC_converter ;
- TECObjectRef m_WC2MB_converter ;
-
- TextEncodingBase m_char_encoding ;
- TextEncodingBase m_unicode_encoding ;
+ TECObjectRef m_MB2WC_converter ;
+ TECObjectRef m_WC2MB_converter ;
+
+ TextEncodingBase m_char_encoding ;
+ TextEncodingBase m_unicode_encoding ;
};
#endif // defined(__WXMAC__) && defined(TARGET_CARBON)
#ifdef wxHAVE_WIN32_MB2WC
{
+#if wxUSE_FONTMAP
wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name)
: new wxMBConv_win32(m_encoding);
if ( conv->IsOk() )
return conv;
delete conv;
+#else
+ return NULL;
+#endif
}
#endif // wxHAVE_WIN32_MB2WC
-#if defined(__WXMAC__)
+#if defined(__WXMAC__)
{
- if ( m_name || ( m_encoding < wxFONTENCODING_UTF16BE ) )
- {
-
- wxMBConv_mac *conv = m_name ? new wxMBConv_mac(m_name)
- : new wxMBConv_mac(m_encoding);
- if ( conv->IsOk() )
- return conv;
+ if ( m_name || ( m_encoding < wxFONTENCODING_UTF16BE ) )
+ {
- delete conv;
- }
+ wxMBConv_mac *conv = m_name ? new wxMBConv_mac(m_name)
+ : new wxMBConv_mac(m_encoding);
+ if ( conv->IsOk() )
+ return conv;
+
+ delete conv;
+ }
}
#endif
// step (2)
#ifdef __WINDOWS__
static wxMBConv_win32 wxConvLibcObj;
+#elif defined(__WXMAC__) && !defined(__MACH__)
+ static wxMBConv_mac wxConvLibcObj ;
#else
static wxMBConvLibc wxConvLibcObj;
#endif
projects / wxWidgets.git / blobdiff