added wxUmaskChanger class and wxCHANGE_UMASK macro and use them instead of duplicati...

[wxWidgets.git] / src / common / strconv.cpp

diff --git a/src/common/strconv.cpp b/src/common/strconv.cpp
index cdbaabf73ee6bd5d17c8c489e9907b0664306150..395c2535ee4d25a922cd34a6edd423f13abe22a6 100644 (file)
--- a/src/common/strconv.cpp
+++ b/src/common/strconv.cpp
@@ -5,7 +5,8 @@
 // Modified by:
 // Created:     29/01/98
 // RCS-ID:      $Id$
 // Modified by:
 // Created:     29/01/98
 // RCS-ID:      $Id$

-// Copyright:   (c) 1999 Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik
+// Copyright:   (c) 1999 Ove Kaaven, Robert Roebling, Vaclav Slavik
+//              (c) 2000-2003 Vadim Zeitlin

 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 


@@ -33,10 +34,18 @@
     #include "wx/log.h"
 #endif // WX_PRECOMP
 
     #include "wx/log.h"
 #endif // WX_PRECOMP
 

+#include "wx/strconv.h"
+
+#if wxUSE_WCHAR_T
+

 #ifdef __WXMSW__
     #include "wx/msw/private.h"
 #endif
 
 #ifdef __WXMSW__
     #include "wx/msw/private.h"
 #endif
 

+#ifdef __WINDOWS__
+    #include "wx/msw/missing.h"
+#endif
+

 #ifndef __WXWINCE__
 #include <errno.h>
 #endif
 #ifndef __WXWINCE__
 #include <errno.h>
 #endif


@@ -45,53 +54,14 @@
 #include <string.h>
 #include <stdlib.h>
 
 #include <string.h>
 #include <stdlib.h>
 

-#include "wx/module.h"
-#include "wx/strconv.h"
-
-// ----------------------------------------------------------------------------
-// globals
-// ----------------------------------------------------------------------------
-
-#if wxUSE_WCHAR_T
-    WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc;
-    WXDLLIMPEXP_DATA_BASE(wxCSConv) wxConvLocal((const wxChar *)NULL);
-    WXDLLIMPEXP_DATA_BASE(wxCSConv) wxConvISO8859_1(_T("iso-8859-1"));
-#else
-    // stand-ins in absence of wchar_t
-    WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc,
-                                    wxConvFile,
-                                    wxConvISO8859_1,
-                                    wxConvLocal,
-                                    wxConvUTF8;
-#endif // wxUSE_WCHAR_T
-
-WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibc;
-
-class wxStrConvModule: public wxModule
-{
-public:
-    wxStrConvModule() : wxModule() { }
-    virtual bool OnInit() { return TRUE; }
-    virtual void OnExit()
-    {
-#if wxUSE_WCHAR_T
-         wxConvLocal.Clear();
-         wxConvISO8859_1.Clear();
-#endif
-    }
-
-    DECLARE_DYNAMIC_CLASS(wxStrConvModule)
-};
-
-IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule)
-
+#if defined(__WIN32__) && !defined(__WXMICROWIN__)
+    #define wxHAVE_WIN32_MB2WC
+#endif // __WIN32__ but !__WXMICROWIN__

 
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 

-#if wxUSE_WCHAR_T
-

 #ifdef __SALFORDC__
     #include <clib.h>
 #endif
 #ifdef __SALFORDC__
     #include <clib.h>
 #endif


@@ -102,7 +72,15 @@ IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule)
 
 #include "wx/encconv.h"
 #include "wx/fontmap.h"
 
 #include "wx/encconv.h"
 #include "wx/fontmap.h"

+#include "wx/utils.h"

 
 

+#ifdef __WXMAC__
+#include <ATSUnicode.h>
+#include <TextCommon.h>
+#include <TextEncodingConverter.h>
+
+#include  "wx/mac/private.h"  // includes mac headers
+#endif

 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------


@@ -110,12 +88,6 @@ IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule)
 #define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
 #define BSWAP_UTF16(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
 
 #define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
 #define BSWAP_UTF16(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
 

-// under Unix SIZEOF_WCHAR_T is defined by configure, but under other platforms
-// it might be not defined - assume the most common value
-#ifndef SIZEOF_WCHAR_T
-    #define SIZEOF_WCHAR_T 2
-#endif // !defined(SIZEOF_WCHAR_T)
-

 #if SIZEOF_WCHAR_T == 4
     #define WC_NAME         "UCS4"
     #define WC_BSWAP         BSWAP_UCS4
 #if SIZEOF_WCHAR_T == 4
     #define WC_NAME         "UCS4"
     #define WC_BSWAP         BSWAP_UCS4


@@ -134,8 +106,8 @@ IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule)
       #define WC_NAME_BEST  "UTF-16LE"
     #endif
 #else // sizeof(wchar_t) != 2 nor 4
       #define WC_NAME_BEST  "UTF-16LE"
     #endif
 #else // sizeof(wchar_t) != 2 nor 4

-    // I don't know what to do about this
-    #error "Weird sizeof(wchar_t): please report your platform details to wx-users mailing list"
+    // does this ever happen?
+    #error "Unknown sizeof(wchar_t): please report this to wx-dev@lists.wxwindows.org"

 #endif
 
 // ============================================================================
 #endif
 
 // ============================================================================


@@ -143,16 +115,16 @@ IMPLEMENT_DYNAMIC_CLASS(wxStrConvModule, wxModule)
 // ============================================================================
 
 // ----------------------------------------------------------------------------
 // ============================================================================
 
 // ----------------------------------------------------------------------------

-// UTF-16 en/decoding
+// UTF-16 en/decoding to/from UCS-4

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-#ifdef WC_UTF16

 
 

-static size_t encode_utf16(wxUint32 input, wchar_t *output)
+static size_t encode_utf16(wxUint32 input, wxUint16 *output)

 {
     if (input<=0xffff)
     {
 {
     if (input<=0xffff)
     {

-        if (output) *output++ = (wchar_t) input;
+        if (output)
+            *output = (wxUint16) input;

         return 1;
     }
     else if (input>=0x110000)
         return 1;
     }
     else if (input>=0x110000)


@@ -163,14 +135,14 @@ static size_t encode_utf16(wxUint32 input, wchar_t *output)
     {
         if (output)
         {
     {
         if (output)
         {

-            *output++ = (wchar_t) ((input >> 10)+0xd7c0);
-            *output++ = (wchar_t) ((input&0x3ff)+0xdc00);
+            *output++ = (wxUint16) ((input >> 10)+0xd7c0);
+            *output = (wxUint16) ((input&0x3ff)+0xdc00);

         }
         return 2;
     }
 }
 
         }
         return 2;
     }
 }
 

-static size_t decode_utf16(const wchar_t* input, wxUint32& output)
+static size_t decode_utf16(const wxUint16* input, wxUint32& output)

 {
     if ((*input<0xd800) || (*input>0xdfff))
     {
 {
     if ((*input<0xd800) || (*input>0xdfff))
     {


@@ -189,55 +161,16 @@ static size_t decode_utf16(const wchar_t* input, wxUint32& output)
     }
 }
 
     }
 }
 

-#endif // WC_UTF16

 
 // ----------------------------------------------------------------------------
 // wxMBConv
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // wxMBConv
 // ----------------------------------------------------------------------------
 

-#define IGNORE_LIBC 0
-

 wxMBConv::~wxMBConv()
 {
     // nothing to do here
 }
 
 wxMBConv::~wxMBConv()
 {
     // nothing to do here
 }
 

-size_t wxMBConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
-{
-#if IGNORE_LIBC
-    if (buf)
-    {
-        for (size_t i = 0; i < strlen( psz )+1; i++)
-            buf[i] = (wchar_t) psz[i];
-        return strlen( psz );
-    }
-    else
-    {
-        return strlen( psz );
-    }
-#else
-    return wxMB2WC(buf, psz, n);
-#endif
-}
-
-size_t wxMBConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
-{
-#if IGNORE_LIBC
-    if (buf)
-    {
-        for (size_t i = 0; i < wxStrlen( psz )+1; i++)
-            buf[i] = (char) psz[i];
-        return wxStrlen( psz );
-    }
-    else
-    {
-        return wxStrlen( psz );
-    }
-#else
-    return wxWC2MB(buf, psz, n);
-#endif
-}
-

 const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
 {
     if ( psz )
 const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
 {
     if ( psz )


@@ -248,9 +181,11 @@ const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
         {
             // now do the actual conversion
             wxWCharBuffer buf(nLen);
         {
             // 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;
+            }

         }
     }
 
         }
     }
 


@@ -266,10 +201,12 @@ const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const
         size_t nLen = WC2MB(NULL, pwz, 0);
         if ( nLen != (size_t)-1 )
         {
         size_t nLen = WC2MB(NULL, pwz, 0);
         if ( nLen != (size_t)-1 )
         {

-            wxCharBuffer buf(nLen);
-            WC2MB(buf.data(), pwz, nLen + 1);
-
-            return buf;
+            wxCharBuffer buf(nLen+3);       // space for a wxUint32 trailing zero
+            nLen = WC2MB(buf.data(), pwz, nLen + 4);
+            if ( nLen != (size_t)-1 )
+            {
+                return buf;
+            }

         }
     }
 
         }
     }
 


@@ -279,10 +216,22 @@ const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------

-// UTF-7
+// wxMBConvLibc

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7) wxConvUTF7;
+size_t wxMBConvLibc::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    return wxMB2WC(buf, psz, n);
+}
+
+size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    return wxWC2MB(buf, psz, n);
+}
+
+// ----------------------------------------------------------------------------
+// UTF-7
+// ----------------------------------------------------------------------------

 
 #if 0
 static char utf7_setD[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 
 #if 0
 static char utf7_setD[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"


@@ -313,8 +262,6 @@ size_t wxMBConvUTF7::WC2MB(char * WXUNUSED(buf),
 // UTF-8
 // ----------------------------------------------------------------------------
 
 // UTF-8
 // ----------------------------------------------------------------------------
 

-WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8) wxConvUTF8;
-

 static wxUint32 utf8_max[]=
     { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
 
 static wxUint32 utf8_max[]=
     { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
 


@@ -363,7 +310,8 @@ size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
                     return (size_t)-1;
                 }
 #ifdef WC_UTF16
                     return (size_t)-1;
                 }
 #ifdef WC_UTF16

-                size_t pa = encode_utf16(res, buf);
+                // cast is ok because wchar_t == wxUuint16 if WC_UTF16
+                size_t pa = encode_utf16(res, (wxUint16 *)buf);

                 if (pa == (size_t)-1)
                   return (size_t)-1;
                 if (buf)
                 if (pa == (size_t)-1)
                   return (size_t)-1;
                 if (buf)


@@ -390,7 +338,8 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
     {
         wxUint32 cc;
 #ifdef WC_UTF16
     {
         wxUint32 cc;
 #ifdef WC_UTF16

-        size_t pa = decode_utf16(psz, cc);
+        // cast is ok for WC_UTF16
+        size_t pa = decode_utf16((const wxUint16 *)psz, cc);

         psz += (pa == (size_t)-1) ? 1 : pa;
 #else
         cc=(*psz++) & 0x7fffffff;
         psz += (pa == (size_t)-1) ? 1 : pa;
 #else
         cc=(*psz++) & 0x7fffffff;


@@ -422,45 +371,472 @@ size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
     return len;
 }
 
     return len;
 }
 

-// ============================================================================
-// wxCharacterSet and derived classes
-// ============================================================================
+
+

 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------

-// wxCharacterSet is the ABC for the classes below
+// UTF-16

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-class wxCharacterSet
+#ifdef WORDS_BIGENDIAN
+    #define wxMBConvUTF16straight wxMBConvUTF16BE
+    #define wxMBConvUTF16swap     wxMBConvUTF16LE
+#else
+    #define wxMBConvUTF16swap     wxMBConvUTF16BE
+    #define wxMBConvUTF16straight wxMBConvUTF16LE
+#endif
+
+
+#ifdef WC_UTF16
+
+// copy 16bit MB to 16bit String
+size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const

 {
 {

-public:
-    wxCharacterSet() { }
-    virtual ~wxCharacterSet() {}
+    size_t len=0;
+
+    while (*(wxUint16*)psz && (!buf || len < n))
+    {
+        if (buf)
+            *buf++ = *(wxUint16*)psz;
+        len++;
+
+        psz += sizeof(wxUint16);
+    }
+    if (buf && len<n)   *buf=0;
+
+    return len;
+}
+
+
+// copy 16bit String to 16bit MB
+size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        if (buf)
+        {
+            *(wxUint16*)buf = *psz;
+            buf += sizeof(wxUint16);
+        }
+        len += sizeof(wxUint16);
+        psz++;
+    }
+    if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
+
+    return len;
+}
+
+
+// swap 16bit MB to 16bit String
+size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*(wxUint16*)psz && (!buf || len < n))
+    {
+        if (buf)
+        {
+            ((char *)buf)[0] = psz[1];
+            ((char *)buf)[1] = psz[0];
+            buf++;
+        }
+        len++;
+        psz += sizeof(wxUint16);
+    }
+    if (buf && len<n)   *buf=0;
+
+    return len;
+}
+
+
+// swap 16bit MB to 16bit String
+size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        if (buf)
+        {
+            *buf++ = ((char*)psz)[1];
+            *buf++ = ((char*)psz)[0];
+        }
+        len += sizeof(wxUint16);
+        psz++;
+    }
+    if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
+
+    return len;
+}
+
+
+#else // WC_UTF16
+
+
+// copy 16bit MB to 32bit String
+size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*(wxUint16*)psz && (!buf || len < n))
+    {
+        wxUint32 cc;
+        size_t pa=decode_utf16((wxUint16*)psz, cc);
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+            *buf++ = cc;
+        len++;
+        psz += pa * sizeof(wxUint16);
+    }
+    if (buf && len<n)   *buf=0;
+
+    return len;
+}
+
+
+// copy 32bit String to 16bit MB
+size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        wxUint16 cc[2];
+        size_t pa=encode_utf16(*psz, cc);
+
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+        {
+            *(wxUint16*)buf = cc[0];
+            buf += sizeof(wxUint16);
+            if (pa > 1)
+            {
+                *(wxUint16*)buf = cc[1];
+                buf += sizeof(wxUint16);
+            }
+        }
+
+        len += pa*sizeof(wxUint16);
+        psz++;
+    }
+    if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
+
+    return len;
+}
+
+
+// swap 16bit MB to 32bit String
+size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*(wxUint16*)psz && (!buf || len < n))
+    {
+        wxUint32 cc;
+        char tmp[4];
+        tmp[0]=psz[1];  tmp[1]=psz[0];
+        tmp[2]=psz[3];  tmp[3]=psz[2];
+
+        size_t pa=decode_utf16((wxUint16*)tmp, cc);
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+            *buf++ = cc;
+
+        len++;
+        psz += pa * sizeof(wxUint16);
+    }
+    if (buf && len<n)   *buf=0;
+
+    return len;
+}
+
+
+// swap 32bit String to 16bit MB
+size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        wxUint16 cc[2];
+        size_t pa=encode_utf16(*psz, cc);
+
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+        {
+            *buf++ = ((char*)cc)[1];
+            *buf++ = ((char*)cc)[0];
+            if (pa > 1)
+            {
+                *buf++ = ((char*)cc)[3];
+                *buf++ = ((char*)cc)[2];
+            }
+        }
+
+        len += pa*sizeof(wxUint16);
+        psz++;
+    }
+    if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
+
+    return len;
+}
+
+#endif // WC_UTF16

 
 

-    virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) = 0;
-    virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) = 0;
-    virtual bool usable() const = 0;
-};

 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------

-// ID_CharSet: implementation of wxCharacterSet using an existing wxMBConv
+// UTF-32

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-class ID_CharSet : public wxCharacterSet
-{
-public:
-    ID_CharSet(wxMBConv *cnv) : work(cnv) {}
+#ifdef WORDS_BIGENDIAN
+#define wxMBConvUTF32straight  wxMBConvUTF32BE
+#define wxMBConvUTF32swap      wxMBConvUTF32LE
+#else
+#define wxMBConvUTF32swap      wxMBConvUTF32BE
+#define wxMBConvUTF32straight  wxMBConvUTF32LE
+#endif
+
+
+WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32LE) wxConvUTF32LE;
+WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32BE) wxConvUTF32BE;
+
+
+#ifdef WC_UTF16
+
+// copy 32bit MB to 16bit String
+size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*(wxUint32*)psz && (!buf || len < n))
+    {
+        wxUint16 cc[2];
+
+        size_t pa=encode_utf16(*(wxUint32*)psz, cc);
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+        {
+            *buf++ = cc[0];
+            if (pa > 1)
+                *buf++ = cc[1];
+        }
+        len += pa;
+        psz += sizeof(wxUint32);
+    }
+    if (buf && len<n)   *buf=0;
+
+    return len;
+}
+
+
+// copy 16bit String to 32bit MB
+size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        wxUint32 cc;
+
+        // cast is ok for WC_UTF16
+        size_t pa = decode_utf16((const wxUint16 *)psz, cc);
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+        {
+            *(wxUint32*)buf = cc;
+            buf += sizeof(wxUint32);
+        }
+        len += sizeof(wxUint32);
+        psz += pa;
+    }
+
+    if (buf && len<=n-sizeof(wxUint32))
+        *(wxUint32*)buf=0;
+
+    return len;
+}
+
+
+
+// swap 32bit MB to 16bit String
+size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*(wxUint32*)psz && (!buf || len < n))
+    {
+        char tmp[4];
+        tmp[0] = psz[3];   tmp[1] = psz[2];
+        tmp[2] = psz[1];   tmp[3] = psz[0];
+
+
+        wxUint16 cc[2];
+
+        size_t pa=encode_utf16(*(wxUint32*)tmp, cc);
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+        {
+            *buf++ = cc[0];
+            if (pa > 1)
+                *buf++ = cc[1];
+        }
+        len += pa;
+        psz += sizeof(wxUint32);
+    }
+
+    if (buf && len<n)
+        *buf=0;
+
+    return len;
+}
+
+
+// swap 16bit String to 32bit MB
+size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        char cc[4];
+
+        // cast is ok for WC_UTF16
+        size_t pa=decode_utf16((const wxUint16 *)psz, *(wxUint32*)cc);
+        if (pa == (size_t)-1)
+            return pa;
+
+        if (buf)
+        {
+            *buf++ = cc[3];
+            *buf++ = cc[2];
+            *buf++ = cc[1];
+            *buf++ = cc[0];
+        }
+        len += sizeof(wxUint32);
+        psz += pa;
+    }
+
+    if (buf && len<=n-sizeof(wxUint32))
+        *(wxUint32*)buf=0;
+
+    return len;
+}
+
+#else // WC_UTF16
+
+
+// copy 32bit MB to 32bit String
+size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*(wxUint32*)psz && (!buf || len < n))
+    {
+        if (buf)
+            *buf++ = *(wxUint32*)psz;
+        len++;
+        psz += sizeof(wxUint32);
+    }
+
+    if (buf && len<n)
+        *buf=0;
+
+    return len;
+}
+
+
+// copy 32bit String to 32bit MB
+size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        if (buf)
+        {
+            *(wxUint32*)buf = *psz;
+            buf += sizeof(wxUint32);
+        }
+
+        len += sizeof(wxUint32);
+        psz++;
+    }
+
+    if (buf && len<=n-sizeof(wxUint32))
+        *(wxUint32*)buf=0;
+
+    return len;
+}
+
+
+// swap 32bit MB to 32bit String
+size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*(wxUint32*)psz && (!buf || len < n))
+    {
+        if (buf)
+        {
+            ((char *)buf)[0] = psz[3];
+            ((char *)buf)[1] = psz[2];
+            ((char *)buf)[2] = psz[1];
+            ((char *)buf)[3] = psz[0];
+            buf++;
+        }
+        len++;
+        psz += sizeof(wxUint32);
+    }
+
+    if (buf && len<n)
+        *buf=0;
+
+    return len;
+}
+
+
+// swap 32bit String to 32bit MB
+size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
+{
+    size_t len=0;
+
+    while (*psz && (!buf || len < n))
+    {
+        if (buf)
+        {
+            *buf++ = ((char *)psz)[3];
+            *buf++ = ((char *)psz)[2];
+            *buf++ = ((char *)psz)[1];
+            *buf++ = ((char *)psz)[0];
+        }
+        len += sizeof(wxUint32);
+        psz++;
+    }
+
+    if (buf && len<=n-sizeof(wxUint32))
+        *(wxUint32*)buf=0;

 
 

-    size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
-        { return work ? work->MB2WC(buf,psz,n) : (size_t)-1; }
+    return len;
+}

 
 

-    size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
-        { return work ? work->WC2MB(buf,psz,n) : (size_t)-1; }

 
 

-    bool usable() const
-        { return work!=NULL; }
-public:
-    wxMBConv*work;
-};
+#endif // WC_UTF16

 
 
 // ============================================================================
 
 
 // ============================================================================


@@ -486,19 +862,19 @@ public:
 #define ICONV_CHAR_CAST(x)  ((ICONV_CONST char **)(x))
 
 // ----------------------------------------------------------------------------
 #define ICONV_CHAR_CAST(x)  ((ICONV_CONST char **)(x))
 
 // ----------------------------------------------------------------------------

-// IC_CharSet: encapsulates an iconv character set
+// wxMBConv_iconv: encapsulates an iconv character set

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-class IC_CharSet : public wxCharacterSet
+class wxMBConv_iconv : public wxMBConv

 {
 public:
 {
 public:

-    IC_CharSet(const wxChar *name);
-    virtual ~IC_CharSet();
+    wxMBConv_iconv(const wxChar *name);
+    virtual ~wxMBConv_iconv();

 
 

-    virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n);
-    virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n);
+    virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
+    virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;

 
 

-    bool usable() const
+    bool IsOk() const

         { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
 
 protected:
         { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
 
 protected:


@@ -508,7 +884,7 @@ protected:
             w2m;
 
 private:
             w2m;
 
 private:

-    // the name (for iconv_open()) of a wide char charset - if none is
+    // the name (for iconv_open()) of a wide char charset -- if none is

     // available on this machine, it will remain NULL
     static const char *ms_wcCharsetName;
 
     // available on this machine, it will remain NULL
     static const char *ms_wcCharsetName;
 


@@ -517,10 +893,10 @@ private:
     static bool ms_wcNeedsSwap;
 };
 
     static bool ms_wcNeedsSwap;
 };
 

-const char *IC_CharSet::ms_wcCharsetName = NULL;
-bool IC_CharSet::ms_wcNeedsSwap = FALSE;
+const char *wxMBConv_iconv::ms_wcCharsetName = NULL;
+bool wxMBConv_iconv::ms_wcNeedsSwap = false;

 
 

-IC_CharSet::IC_CharSet(const wxChar *name)
+wxMBConv_iconv::wxMBConv_iconv(const wxChar *name)

 {
     // Do it the hard way
     char cname[100];
 {
     // Do it the hard way
     char cname[100];


@@ -530,7 +906,7 @@ IC_CharSet::IC_CharSet(const wxChar *name)
     // check for charset that represents wchar_t:
     if (ms_wcCharsetName == NULL)
     {
     // check for charset that represents wchar_t:
     if (ms_wcCharsetName == NULL)
     {

-        ms_wcNeedsSwap = FALSE;
+        ms_wcNeedsSwap = false;

 
         // try charset with explicit bytesex info (e.g. "UCS-4LE"):
         ms_wcCharsetName = WC_NAME_BEST;
 
         // try charset with explicit bytesex info (e.g. "UCS-4LE"):
         ms_wcCharsetName = WC_NAME_BEST;


@@ -583,7 +959,7 @@ IC_CharSet::IC_CharSet(const wxChar *name)
             {
                 ms_wcCharsetName = NULL;
 
             {
                 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(
                 //     fall back to using wxEncodingConverter.
                 wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name);
                 //wxLogError(


@@ -607,7 +983,7 @@ IC_CharSet::IC_CharSet(const wxChar *name)
     }
 }
 
     }
 }
 

-IC_CharSet::~IC_CharSet()
+wxMBConv_iconv::~wxMBConv_iconv()

 {
     if ( m2w != (iconv_t)-1 )
         iconv_close(m2w);
 {
     if ( m2w != (iconv_t)-1 )
         iconv_close(m2w);


@@ -615,7 +991,7 @@ IC_CharSet::~IC_CharSet()
         iconv_close(w2m);
 }
 
         iconv_close(w2m);
 }
 

-size_t IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n)
+size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const

 {
     size_t inbuf = strlen(psz);
     size_t outbuf = n * SIZEOF_WCHAR_T;
 {
     size_t inbuf = strlen(psz);
     size_t outbuf = n * SIZEOF_WCHAR_T;


@@ -672,7 +1048,7 @@ size_t IC_CharSet::MB2WC(wchar_t *buf, const char *psz, size_t n)
     return res;
 }
 
     return res;
 }
 

-size_t IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n)
+size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const

 {
     size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
     size_t outbuf = n;
 {
     size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
     size_t outbuf = n;


@@ -737,71 +1113,319 @@ size_t IC_CharSet::WC2MB(char *buf, const wchar_t *psz, size_t n)
 
 #endif // HAVE_ICONV
 
 
 #endif // HAVE_ICONV
 

+

 // ============================================================================
 // Win32 conversion classes
 // ============================================================================
 
 // ============================================================================
 // Win32 conversion classes
 // ============================================================================
 

-#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
+#ifdef wxHAVE_WIN32_MB2WC

 
 // from utils.cpp
 
 // from utils.cpp

+#if wxUSE_FONTMAP

 extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const wxChar *charset);
 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
 extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const wxChar *charset);
 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);

+#endif

 
 

-class CP_CharSet : public wxCharacterSet
+class wxMBConv_win32 : public wxMBConv

 {
 public:
 {
 public:

-    CP_CharSet(const wxChar* name)
-        {
-            m_CodePage = wxCharsetToCodepage(name);
-        }
+    wxMBConv_win32()
+    {
+        m_CodePage = CP_ACP;
+    }

 
 

-    CP_CharSet(wxFontEncoding encoding)
-        {
-            m_CodePage = wxEncodingToCodepage(encoding);
-        }
+#if wxUSE_FONTMAP
+    wxMBConv_win32(const wxChar* name)
+    {
+        m_CodePage = wxCharsetToCodepage(name);
+    }
+
+    wxMBConv_win32(wxFontEncoding encoding)
+    {
+        m_CodePage = wxEncodingToCodepage(encoding);
+    }
+#endif

 
 

-    size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
+    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
         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
                                 buf ? n : 0     // size of output buffer
                              );
 
                                 psz,            // input string
                                 -1,             // its length (NUL-terminated)
                                 buf,            // output string
                                 buf ? n : 0     // size of output buffer
                              );
 

-        // note that it returns # of written chars for buf != NULL and *size*
-        // of the needed buffer for buf == NULL
-        return len ? (buf ? len : len - 1) : (size_t)-1;
+        // note that it returns count of written chars for buf != NULL and size
+        // of the needed buffer for buf == NULL so in either case the length of
+        // the string (which never includes the terminating NUL) is one less
+        return len ? len - 1 : (size_t)-1;

     }
 
     }
 

-    size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
+    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
         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
                                 -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?

                              );
 
                              );
 

-        // see the comment above!
-        return len ? (buf ? len : len - 1) : (size_t)-1;
+        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 - 1;

     }
 
     }
 

-    bool usable() 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;
 };
     long m_CodePage;
 };

-#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
+
+#endif // wxHAVE_WIN32_MB2WC
+
+// ============================================================================
+// Mac conversion classes
+// ============================================================================
+
+#if defined(__WXMAC__) && defined(TARGET_CARBON)
+
+class wxMBConv_mac : public wxMBConv
+{
+public:
+    wxMBConv_mac()
+    {
+        Init(CFStringGetSystemEncoding()) ;
+    }
+
+    wxMBConv_mac(const wxChar* name)
+    {
+        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 ;
+        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) ;
+        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 ;
+    }
+
+    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 ;
+
+        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 ;
+    }
+
+    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 ;
+};
+
+#endif // defined(__WXMAC__) && defined(TARGET_CARBON)

 
 // ============================================================================
 // wxEncodingConverter based conversion classes
 
 // ============================================================================
 // wxEncodingConverter based conversion classes


@@ -809,7 +1433,7 @@ public:
 
 #if wxUSE_FONTMAP
 
 
 #if wxUSE_FONTMAP
 

-class EC_CharSet : public wxCharacterSet
+class wxMBConv_wxwin : public wxMBConv

 {
 private:
     void Init()
 {
 private:
     void Init()


@@ -821,24 +1445,24 @@ private:
 public:
     // temporarily just use wxEncodingConverter stuff,
     // so that it works while a better implementation is built
 public:
     // temporarily just use wxEncodingConverter stuff,
     // so that it works while a better implementation is built

-    EC_CharSet(const wxChar* name)
+    wxMBConv_wxwin(const wxChar* name)

     {
         if (name)
     {
         if (name)

-            m_enc = wxFontMapper::Get()->CharsetToEncoding(name, FALSE);
+            m_enc = wxFontMapper::Get()->CharsetToEncoding(name, false);

         else
             m_enc = wxFONTENCODING_SYSTEM;
 
         Init();
     }
 
         else
             m_enc = wxFONTENCODING_SYSTEM;
 
         Init();
     }
 

-    EC_CharSet(wxFontEncoding enc)
+    wxMBConv_wxwin(wxFontEncoding enc)

     {
         m_enc = enc;
 
         Init();
     }
 
     {
         m_enc = enc;
 
         Init();
     }
 

-    size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n))
+    size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) const

     {
         size_t inbuf = strlen(psz);
         if (buf)
     {
         size_t inbuf = strlen(psz);
         if (buf)


@@ -846,7 +1470,7 @@ public:
         return inbuf;
     }
 
         return inbuf;
     }
 

-    size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n))
+    size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) const

     {
         const size_t inbuf = wxWcslen(psz);
         if (buf)
     {
         const size_t inbuf = wxWcslen(psz);
         if (buf)


@@ -855,7 +1479,7 @@ public:
         return inbuf;
     }
 
         return inbuf;
     }
 

-    bool usable() const { return m_ok; }
+    bool IsOk() const { return m_ok; }

 
 public:
     wxFontEncoding m_enc;
 
 public:
     wxFontEncoding m_enc;


@@ -864,120 +1488,43 @@ public:
     // were we initialized successfully?
     bool m_ok;
 
     // were we initialized successfully?
     bool m_ok;
 

-    DECLARE_NO_COPY_CLASS(EC_CharSet)
+    DECLARE_NO_COPY_CLASS(wxMBConv_wxwin)

 };
 
 #endif // wxUSE_FONTMAP
 
 };
 
 #endif // wxUSE_FONTMAP
 

-// ----------------------------------------------------------------------------
-// the function creating the wxCharacterSet for the specified charset on the
-// current system, trying all possibilities
-//
-// it uses the name if it is given or encoding if name == NULL
-// ----------------------------------------------------------------------------
-
-static wxCharacterSet *
-wxGetCharacterSet(const wxChar *name, wxFontEncoding encoding)
-{
-    // check for the special case of ASCII charset
-    if ( (!name && encoding == wxFONTENCODING_DEFAULT)
-#if wxUSE_FONTMAP
-            || (name && wxFontMapper::Get()->
-                    CharsetToEncoding(name) == wxFONTENCODING_DEFAULT)
-#endif // wxUSE_FONTMAP
-       )
-    {
-        // don't convert at all
-        return NULL;
-    }
-
-    wxCharacterSet *cset;
-
-    if ( (name &&
-            (wxStricmp(name, wxT("UTF8")) == 0 ||
-             wxStricmp(name, wxT("UTF-8")) == 0)) ||
-          encoding == wxFONTENCODING_UTF8 )
-    {
-        cset = new ID_CharSet(&wxConvUTF8);
-    }
-    else // !UTF-8
-    {
-#ifdef HAVE_ICONV
-        if ( name )
-        {
-            cset = new IC_CharSet(name);
-        }
-        else
-#endif // HAVE_ICONV
-        {
-            cset = NULL;
-        }
-    }
-
-    // it can only be NULL in this case
-#ifndef HAVE_ICONV
-    if ( cset )
-#endif // !HAVE_ICONV
-    {
-        if ( cset->usable() )
-            return cset;
-
-        delete cset;
-        cset = NULL;
-    }
-
-#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
-    cset = name ? new CP_CharSet(name) : new CP_CharSet(encoding);
-    if ( cset->usable() )
-        return cset;
-
-    delete cset;
-    cset = NULL;
-#endif // defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXUNIVERSAL__)
-
-#if wxUSE_FONTMAP
-    cset = name ? new EC_CharSet(name) : new EC_CharSet(encoding);
-    if ( cset->usable() )
-        return cset;
-
-    delete cset;
-    cset = NULL;
-#endif // wxUSE_FONTMAP
-
-    wxLogError(_("Cannot convert from encoding '%s'!"),
-               name ? name
-                    :
-#if wxUSE_FONTMAP
-                     wxFontMapper::GetEncodingDescription(encoding).c_str()
-#else // !wxUSE_FONTMAP
-                     wxString::Format(_T("%s"), encoding).c_str()
-#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
-              );
-
-    return NULL;
-}
-

 // ============================================================================
 // wxCSConv implementation
 // ============================================================================
 
 void wxCSConv::Init()
 {
 // ============================================================================
 // wxCSConv implementation
 // ============================================================================
 
 void wxCSConv::Init()
 {

-    m_name = (wxChar *)NULL;
-    m_cset = (wxCharacterSet *) NULL;
-    m_deferred = TRUE;
+    m_name = NULL;
+    m_convReal =  NULL;
+    m_deferred = true;

 }
 
 wxCSConv::wxCSConv(const wxChar *charset)
 {
     Init();
 }
 
 wxCSConv::wxCSConv(const wxChar *charset)
 {
     Init();

-    m_encoding = wxFONTENCODING_DEFAULT;

 
 

-    SetName(charset);
+    if ( charset )
+    {
+        SetName(charset);
+    }
+
+    m_encoding = wxFONTENCODING_SYSTEM;

 }
 
 wxCSConv::wxCSConv(wxFontEncoding encoding)
 {
 }
 
 wxCSConv::wxCSConv(wxFontEncoding encoding)
 {

+    if ( encoding == wxFONTENCODING_MAX || encoding == wxFONTENCODING_DEFAULT )
+    {
+        wxFAIL_MSG( _T("invalid encoding value in wxCSConv ctor") );
+
+        encoding = wxFONTENCODING_SYSTEM;
+    }
+

     Init();
 
     m_encoding = encoding;
     Init();
 
     m_encoding = encoding;


@@ -1010,10 +1557,10 @@ wxCSConv& wxCSConv::operator=(const wxCSConv& conv)
 void wxCSConv::Clear()
 {
     free(m_name);
 void wxCSConv::Clear()
 {
     free(m_name);

-    delete m_cset;
+    delete m_convReal;

 
     m_name = NULL;
 
     m_name = NULL;

-    m_cset = NULL;
+    m_convReal = NULL;

 }
 
 void wxCSConv::SetName(const wxChar *charset)
 }
 
 void wxCSConv::SetName(const wxChar *charset)


@@ -1021,39 +1568,179 @@ void wxCSConv::SetName(const wxChar *charset)
     if (charset)
     {
         m_name = wxStrdup(charset);
     if (charset)
     {
         m_name = wxStrdup(charset);

-        m_deferred = TRUE;
+        m_deferred = true;
+    }
+}
+
+wxMBConv *wxCSConv::DoCreate() const
+{
+    // check for the special case of ASCII or ISO8859-1 charset: as we have
+    // special knowledge of it anyhow, we don't need to create a special
+    // conversion object
+    if ( m_encoding == wxFONTENCODING_ISO8859_1 )
+    {
+        // don't convert at all
+        return NULL;
+    }
+
+    // we trust OS to do conversion better than we can so try external
+    // conversion methods first
+    //
+    // the full order is:
+    //      1. OS conversion (iconv() under Unix or Win32 API)
+    //      2. hard coded conversions for UTF
+    //      3. wxEncodingConverter as fall back
+
+    // step (1)
+#ifdef HAVE_ICONV
+#if !wxUSE_FONTMAP
+    if ( m_name )
+#endif // !wxUSE_FONTMAP
+    {
+        wxString name(m_name);
+
+#if wxUSE_FONTMAP
+        if ( name.empty() )
+            name = wxFontMapper::Get()->GetEncodingName(m_encoding);
+#endif // wxUSE_FONTMAP
+
+        wxMBConv_iconv *conv = new wxMBConv_iconv(name);
+        if ( conv->IsOk() )
+            return conv;
+
+        delete conv;
+    }
+#endif // HAVE_ICONV
+
+#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 ( 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;
+
+            delete conv;
+        }
+    }
+#endif
+    // step (2)
+    wxFontEncoding enc = m_encoding;
+#if wxUSE_FONTMAP
+    if ( enc == wxFONTENCODING_SYSTEM && m_name )
+    {
+        // use "false" to suppress interactive dialogs -- we can be called from
+        // anywhere and popping up a dialog from here is the last thing we want to
+        // do
+        enc = wxFontMapper::Get()->CharsetToEncoding(m_name, false);
+    }
+#endif // wxUSE_FONTMAP
+
+    switch ( enc )
+    {
+        case wxFONTENCODING_UTF7:
+             return new wxMBConvUTF7;
+
+        case wxFONTENCODING_UTF8:
+             return new wxMBConvUTF8;
+
+        case wxFONTENCODING_UTF16BE:
+             return new wxMBConvUTF16BE;
+
+        case wxFONTENCODING_UTF16LE:
+             return new wxMBConvUTF16LE;
+
+        case wxFONTENCODING_UTF32BE:
+             return new wxMBConvUTF32BE;
+
+        case wxFONTENCODING_UTF32LE:
+             return new wxMBConvUTF32LE;
+
+        default:
+             // nothing to do but put here to suppress gcc warnings
+             ;
+    }
+
+    // step (3)
+#if wxUSE_FONTMAP
+    {
+        wxMBConv_wxwin *conv = m_name ? new wxMBConv_wxwin(m_name)
+                                      : new wxMBConv_wxwin(m_encoding);
+        if ( conv->IsOk() )
+            return conv;
+
+        delete conv;
+    }
+#endif // wxUSE_FONTMAP
+
+    // NB: This is a hack to prevent deadlock. What could otherwise happen
+    //     in Unicode build: wxConvLocal creation ends up being here
+    //     because of some failure and logs the error. But wxLog will try to
+    //     attach timestamp, for which it will need wxConvLocal (to convert
+    //     time to char* and then wchar_t*), but that fails, tries to log
+    //     error, but wxLog has a (already locked) critical section that
+    //     guards static buffer.
+    static bool alreadyLoggingError = false;
+    if (!alreadyLoggingError)
+    {
+        alreadyLoggingError = true;
+        wxLogError(_("Cannot convert from the charset '%s'!"),
+                   m_name ? m_name
+                      :
+#if wxUSE_FONTMAP
+                         wxFontMapper::GetEncodingDescription(m_encoding).c_str()
+#else // !wxUSE_FONTMAP
+                         wxString::Format(_("encoding %s"), m_encoding).c_str()
+#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
+              );
+        alreadyLoggingError = false;

     }
     }

+
+    return NULL;

 }
 
 }
 

-void wxCSConv::LoadNow()
+void wxCSConv::CreateConvIfNeeded() const

 {
     if ( m_deferred )
     {
 {
     if ( m_deferred )
     {

-        // it would probably be better to make GetSystemEncodingName() always
-        // available (i.e. even when wxUSE_INTL == 0)?
+        wxCSConv *self = (wxCSConv *)this; // const_cast
+

 #if wxUSE_INTL
 #if wxUSE_INTL

-        if ( !m_name && m_encoding == wxFONTENCODING_DEFAULT )
+        // if we don't have neither the name nor the encoding, use the default
+        // encoding for this system
+        if ( !m_name && m_encoding == wxFONTENCODING_SYSTEM )

         {
         {

-            wxString name = wxLocale::GetSystemEncodingName();
-            if ( !name.empty() )
-            {
-                SetName(name);
-            }
+            self->m_name = wxStrdup(wxLocale::GetSystemEncodingName());

         }
 #endif // wxUSE_INTL
 
         }
 #endif // wxUSE_INTL
 

-        // wxGetCharacterSet() complains about NULL name
-        m_cset = wxGetCharacterSet(m_name, m_encoding);
-        m_deferred = FALSE;
+        self->m_convReal = DoCreate();
+        self->m_deferred = false;

     }
 }
 
 size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 {
     }
 }
 
 size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 {

-    ((wxCSConv *)this)->LoadNow(); // discard constness
+    CreateConvIfNeeded();

 
 

-    if (m_cset)
-        return m_cset->MB2WC(buf, psz, n);
+    if (m_convReal)
+        return m_convReal->MB2WC(buf, psz, n);

 
     // latin-1 (direct)
     size_t len = strlen(psz);
 
     // latin-1 (direct)
     size_t len = strlen(psz);


@@ -1069,22 +1756,67 @@ size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 
 size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 {
 
 size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 {

-    ((wxCSConv *)this)->LoadNow(); // discard constness
+    CreateConvIfNeeded();

 
 

-    if (m_cset)
-        return m_cset->WC2MB(buf, psz, n);
+    if (m_convReal)
+        return m_convReal->WC2MB(buf, psz, n);

 
     // latin-1 (direct)
     const size_t len = wxWcslen(psz);
     if (buf)
     {
         for (size_t c = 0; c <= len; c++)
 
     // latin-1 (direct)
     const size_t len = wxWcslen(psz);
     if (buf)
     {
         for (size_t c = 0; c <= len; c++)

-            buf[c] = (psz[c] > 0xff) ? '?' : psz[c];
+        {
+            if (psz[c] > 0xFF)
+                return (size_t)-1;
+            buf[c] = psz[c];
+        }
+    }
+    else
+    {
+        for (size_t c = 0; c <= len; c++)
+        {
+            if (psz[c] > 0xFF)
+                return (size_t)-1;
+        }

     }
 
     return len;
 }
 
     }
 
     return len;
 }
 

-#endif // wxUSE_WCHAR_T
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+#ifdef __WINDOWS__
+    static wxMBConv_win32 wxConvLibcObj;
+#elif defined(__WXMAC__) && !defined(__MACH__)
+    static wxMBConv_mac wxConvLibcObj ;
+#else
+    static wxMBConvLibc wxConvLibcObj;
+#endif
+
+static wxCSConv wxConvLocalObj(wxFONTENCODING_SYSTEM);
+static wxCSConv wxConvISO8859_1Obj(wxFONTENCODING_ISO8859_1);
+static wxMBConvUTF7 wxConvUTF7Obj;
+static wxMBConvUTF8 wxConvUTF8Obj;
+
+
+WXDLLIMPEXP_DATA_BASE(wxMBConv&) wxConvLibc = wxConvLibcObj;
+WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvLocal = wxConvLocalObj;
+WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvISO8859_1 = wxConvISO8859_1Obj;
+WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7&) wxConvUTF7 = wxConvUTF7Obj;
+WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8&) wxConvUTF8 = wxConvUTF8Obj;
+WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibcObj;
+
+#else // !wxUSE_WCHAR_T
+
+// stand-ins in absence of wchar_t
+WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc,
+                                wxConvISO8859_1,
+                                wxConvLocal,
+                                wxConvUTF8;
+
+#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T