X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/95c8801cdf222d27d92350a0f67938554fea8a63..803c55373484d1e2bfed85b46cbbfff8bfad1276:/src/common/strconv.cpp

diff --git a/src/common/strconv.cpp b/src/common/strconv.cpp
index 95fc0d9c07..33b934ef9f 100644
--- a/src/common/strconv.cpp
+++ b/src/common/strconv.cpp
@@ -54,6 +54,8 @@
 
 #include "wx/debug.h"
 #include "wx/strconv.h"
+#include "wx/intl.h"
+#include "wx/log.h"
 
 #if defined(WORDS_BIGENDIAN) || defined(__STDC_ISO_10646__)
 #define BSWAP_UCS4(str, len)
@@ -91,34 +93,43 @@ WXDLLEXPORT_DATA(wxMBConv *) wxConvCurrent = &wxConvLibc;
 
 static size_t encode_utf16(wxUint32 input,wxUint16*output)
 {
-  if (input<=0xffff) {
-    if (output) *output++ = input;
-    return 1;
-  } else
-  if (input>=0x110000) {
-    return (size_t)-1;
-  } else {
-    if (output) {
-      *output++ = (input >> 10)+0xd7c0;
-      *output++ = (input&0x3ff)+0xdc00;
-    }
-    return 2;
-  }
+    if (input<=0xffff)
+    {
+        if (output) *output++ = input;
+        return 1;
+    }
+    else if (input>=0x110000)
+    {
+        return (size_t)-1;
+    }
+    else
+    {
+        if (output)
+        {
+            *output++ = (input >> 10)+0xd7c0;
+            *output++ = (input&0x3ff)+0xdc00;
+        }
+        return 2;
+    }
 }
 
 static size_t decode_utf16(wxUint16*input,wxUint32&output)
 {
-  if ((*input<0xd800) || (*input>0xdfff)) {
-    output = *input;
-    return 1;
-  } else
-  if ((input[1]<0xdc00) || (input[1]>=0xdfff)) {
-    output = *input;
-    return (size_t)-1;
-  } else {
-    output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
-    return 2;
-  }
+    if ((*input<0xd800) || (*input>0xdfff))
+    {
+        output = *input;
+        return 1;
+    }
+    else if ((input[1]<0xdc00) || (input[1]>=0xdfff))
+    {
+        output = *input;
+        return (size_t)-1;
+    }
+    else
+    {
+        output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
+        return 2;
+    }
 }
 
 #endif // WC_UTF16
@@ -198,26 +209,32 @@ WXDLLEXPORT_DATA(wxMBConvGdk) wxConvGdk;
 
 size_t wxMBConvGdk::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 {
-  if (buf) {
-    return gdk_mbstowcs((GdkWChar *)buf, psz, n);
-  } else {
-    GdkWChar *nbuf = new GdkWChar[n=strlen(psz)];
-    size_t len = gdk_mbstowcs(nbuf, psz, n);
-    delete [] nbuf;
-    return len;
-  }
+    if (buf)
+    {
+        return gdk_mbstowcs((GdkWChar *)buf, psz, n);
+    }
+    else
+    {
+        GdkWChar *nbuf = new GdkWChar[n=strlen(psz)];
+        size_t len = gdk_mbstowcs(nbuf, psz, n);
+        delete[] nbuf;
+        return len;
+    }
 }
 
 size_t wxMBConvGdk::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 {
-  char *mbstr = gdk_wcstombs((GdkWChar *)psz);
-  size_t len = mbstr ? strlen(mbstr) : 0;
-  if (buf) {
-    if (len > n) len = n;
-    memcpy(buf, psz, len);
-    if (len < n) buf[len] = 0;
-  }
-  return len;
+    char *mbstr = gdk_wcstombs((GdkWChar *)psz);
+    size_t len = mbstr ? strlen(mbstr) : 0;
+    if (buf)
+    {
+        if (len > n)
+            len = n;
+        memcpy(buf, psz, len);
+        if (len < n)
+            buf[len] = 0;
+    }
+    return len;
 }
 
 #endif // GTK > 1.0
@@ -259,86 +276,110 @@ size_t wxMBConvUTF7::WC2MB(char * WXUNUSED(buf),
 
 WXDLLEXPORT_DATA(wxMBConvUTF8) wxConvUTF8;
 
-static wxUint32 utf8_max[]={0x7f,0x7ff,0xffff,0x1fffff,0x3ffffff,0x7fffffff,0xffffffff};
+static wxUint32 utf8_max[]=
+    { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
 
 size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 {
-  size_t len = 0;
-
-  while (*psz && ((!buf) || (len<n))) {
-    unsigned char cc=*psz++, fc=cc;
-    unsigned cnt;
-    for (cnt=0; fc&0x80; cnt++) fc<<=1;
-    if (!cnt) {
-      // plain ASCII char
-      if (buf) *buf++=cc;
-      len++;
-    } else {
-      cnt--;
-      if (!cnt) {
-        // invalid UTF-8 sequence
-        return (size_t)-1;
-      } else {
-        unsigned ocnt=cnt-1;
-        wxUint32 res=cc&(0x3f>>cnt);
-        while (cnt--) {
-          cc = *psz++;
-          if ((cc&0xC0)!=0x80) {
-            // invalid UTF-8 sequence
-            return (size_t)-1;
-          }
-          res=(res<<6)|(cc&0x3f);
-        }
-        if (res<=utf8_max[ocnt]) {
-          // illegal UTF-8 encoding
-          return (size_t)-1;
+    size_t len = 0;
+
+    while (*psz && ((!buf) || (len < n)))
+    {
+        unsigned char cc = *psz++, fc = cc;
+        unsigned cnt;
+        for (cnt = 0; fc & 0x80; cnt++)
+            fc <<= 1;
+        if (!cnt)
+        {
+            // plain ASCII char
+            if (buf)
+                *buf++ = cc;
+            len++;
         }
+        else
+        {
+            cnt--;
+            if (!cnt)
+            {
+                // invalid UTF-8 sequence
+                return (size_t)-1;
+            }
+            else
+            {
+                unsigned ocnt = cnt - 1;
+                wxUint32 res = cc & (0x3f >> cnt);
+                while (cnt--)
+                {
+                    cc = *psz++;
+                    if ((cc & 0xC0) != 0x80)
+                    {
+                        // invalid UTF-8 sequence
+                        return (size_t)-1;
+                    }
+                    res = (res << 6) | (cc & 0x3f);
+                }
+                if (res <= utf8_max[ocnt])
+                {
+                    // illegal UTF-8 encoding
+                    return (size_t)-1;
+                }
 #ifdef WC_UTF16
-        size_t pa = encode_utf16(res, buf);
-        if (pa == (size_t)-1)
-          return (size_t)-1;
-        if (buf) buf+=pa;
-        len+=pa;
+                size_t pa = encode_utf16(res, buf);
+                if (pa == (size_t)-1)
+                  return (size_t)-1;
+                if (buf)
+                    buf += pa;
+                len += pa;
 #else
-        if (buf) *buf++=res;
-        len++;
+                if (buf)
+                    *buf++ = res;
+                len++;
 #endif
-      }
+            }
+        }
     }
-  }
-  if (buf && (len<n)) *buf = 0;
-  return len;
+    if (buf && (len < n))
+        *buf = 0;
+    return len;
 }
 
 size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 {
-  size_t len = 0;
+    size_t len = 0;
 
-  while (*psz && ((!buf) || (len<n))) {
-    wxUint32 cc;
+    while (*psz && ((!buf) || (len < n)))
+    {
+        wxUint32 cc;
 #ifdef WC_UTF16
-    size_t pa = decode_utf16(psz,cc);
-    psz += (pa == (size_t)-1) ? 1 : pa;
+        size_t pa = decode_utf16(psz,cc);
+        psz += (pa == (size_t)-1) ? 1 : pa;
 #else
-    cc=(*psz++)&0x7fffffff;
+        cc=(*psz++) & 0x7fffffff;
 #endif
-    unsigned cnt;
-    for (cnt=0; cc>utf8_max[cnt]; cnt++);
-    if (!cnt) {
-      // plain ASCII char
-      if (buf) *buf++=cc;
-      len++;
-    } else {
-      len+=cnt+1;
-      if (buf) {
-        *buf++=(-128>>cnt)|((cc>>(cnt*6))&(0x3f>>cnt));
-        while (cnt--)
-          *buf++=0x80|((cc>>(cnt*6))&0x3f);
-      }
-    }
-  }
-  if (buf && (len<n)) *buf = 0;
-  return len;
+        unsigned cnt;
+        for (cnt = 0; cc > utf8_max[cnt]; cnt++) {}
+        if (!cnt)
+        {
+            // plain ASCII char
+            if (buf)
+                *buf++ = cc;
+            len++;
+        }
+
+        else
+        {
+            len += cnt + 1;
+            if (buf)
+            {
+                *buf++ = (-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt));
+                while (cnt--)
+                    *buf++ = 0x80 | ((cc >> (cnt * 6)) & 0x3f);
+            }
+        }
+    }
+
+    if (buf && (len<n)) *buf = 0;
+    return len;
 }
 
 // ----------------------------------------------------------------------------
@@ -360,29 +401,32 @@ WXDLLEXPORT_DATA(wxCSConv) wxConvLocal((const wxChar *)NULL);
 // this should work if M$ Internet Exploiter is installed
 static long CharsetToCodepage(const wxChar *name)
 {
-    if (!name) 
+    if (!name)
         return GetACP();
-        
+
     long CP=-1;
-    
+
     wxString cn(name);
     do {
-        wxString path( wxT("MIME\\Database\\Charset\\") );
+        wxString path(wxT("MIME\\Database\\Charset\\"));
         path += cn;
-        wxRegKey key( wxRegKey::HKCR, path );
-
-        /* two cases: either there's an AliasForCharset string,
-         * or there are Codepage and InternetEncoding dwords.
-         * The InternetEncoding gives us the actual encoding,
-         * the Codepage just says which Windows character set to
-         * use when displaying the data.
-         */
-        if (key.QueryValue( wxT("InternetEncoding"), &CP )) break;
-        
+        wxRegKey key(wxRegKey::HKCR, path);
+
+        if (!key.Exists()) continue;
+
+        // two cases: either there's an AliasForCharset string,
+        // or there are Codepage and InternetEncoding dwords.
+        // The InternetEncoding gives us the actual encoding,
+        // the Codepage just says which Windows character set to
+        // use when displaying the data.
+        if (key.HasValue(wxT("InternetEncoding")) &&
+            key.QueryValue(wxT("InternetEncoding"), &CP)) break;
+
         // no encoding, see if it's an alias
-        if (!key.QueryValue( wxT("AliasForCharset"), cn )) break;
+        if (!key.HasValue(wxT("AliasForCharset")) ||
+            !key.QueryValue(wxT("AliasForCharset"), cn)) break;
     } while (1);
-    
+
     return CP;
 }
 #endif
@@ -394,9 +438,9 @@ public:
         : cname(name) {}
     virtual ~wxCharacterSet()
         {}
-    virtual size_t MB2WC(wchar_t*buf, const char*psz, size_t n) 
+    virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
         { return (size_t)-1; }
-    virtual size_t WC2MB(char*buf, const wchar_t*psz, size_t n)
+    virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
         { return (size_t)-1; }
     virtual bool usable()
         { return FALSE; }
@@ -407,63 +451,78 @@ public:
 class ID_CharSet : public wxCharacterSet
 {
 public:
-    ID_CharSet(const wxChar*name,wxMBConv*cnv)
+    ID_CharSet(const wxChar *name,wxMBConv *cnv)
         : wxCharacterSet(name), work(cnv) {}
-        
-    size_t MB2WC(wchar_t*buf, const char*psz, size_t n)
+
+    size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
         { return work ? work->MB2WC(buf,psz,n) : (size_t)-1; }
-        
-    size_t WC2MB(char*buf, const wchar_t*psz, size_t n)
+
+    size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
         { return work ? work->WC2MB(buf,psz,n) : (size_t)-1; }
-        
+
     bool usable()
         { return work!=NULL; }
 public:
     wxMBConv*work;
 };
 
+
 #ifdef HAVE_ICONV_H
+
+// VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with E2BIG
+//     if output buffer is _exactly_ as big as needed. Such case is (unless there's
+//     yet another bug in glibc) the only case when iconv() returns with (size_t)-1
+//     (which means error) and says there are 0 bytes left in the input buffer --
+//     when _real_ error occurs, bytes-left-in-input buffer is non-zero. Hence,
+//     this alternative test for iconv() failure.
+//     [This bug does not appear in glibc 2.2.]
+#if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
+#define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \
+                                     (errno != E2BIG || bufLeft != 0))
+#else
+#define ICONV_FAILED(cres, bufLeft)  (cres == (size_t)-1)
+#endif
+
 class IC_CharSet : public wxCharacterSet
 {
 public:
-    IC_CharSet(const wxChar*name) 
-        : wxCharacterSet(name), m2w((iconv_t)-1), w2m((iconv_t)-1) {}
-    ~IC_CharSet()
+    IC_CharSet(const wxChar *name)
+        : wxCharacterSet(name)
     {
-        if (m2w!=(iconv_t)-1) iconv_close(m2w);
-        if (w2m!=(iconv_t)-1) iconv_close(w2m);
+        m2w = iconv_open(WC_NAME, wxConvLibc.cWX2MB(cname));
+        w2m = iconv_open(wxConvLibc.cWX2MB(cname), WC_NAME);
     }
-    
-    void LoadM2W() 
-    { 
-        if (m2w==(iconv_t)-1)
-            m2w=iconv_open(WC_NAME,wxConvLibc.cWX2MB(cname));
-    }
-    
-    void LoadW2M()
-    { 
-        if (w2m==(iconv_t)-1)
-            w2m=iconv_open(wxConvLibc.cWX2MB(cname),WC_NAME);
+
+    ~IC_CharSet()
+    {
+        if ( m2w != (iconv_t)-1 )
+            iconv_close(m2w);
+        if ( w2m != (iconv_t)-1 )
+            iconv_close(w2m);
     }
-    
-    size_t MB2WC(wchar_t*buf, const char*psz, size_t n)
+
+    size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
     {
-        LoadM2W();
         size_t inbuf = strlen(psz);
-        size_t outbuf = n*SIZEOF_WCHAR_T;
+        size_t outbuf = n * SIZEOF_WCHAR_T;
         size_t res, cres;
-        fprintf(stderr,"IC Convert to WC using %s\n",(const char*)wxConvLibc.cWX2MB(cname));
+        // VS: Use these instead of psz, buf because iconv() modifies its arguments:
+        wchar_t *bufPtr = buf;
+        const char *pszPtr = psz;
+
         if (buf)
         {
             // have destination buffer, convert there
 #ifdef WX_ICONV_TAKES_CHAR
-            cres = iconv( m2w, (char**)&psz, &inbuf, (char**)&buf, &outbuf );
+            cres = iconv(m2w, (char**)&pszPtr, &inbuf, (char**)&bufPtr, &outbuf);
 #else
-            cres = iconv( m2w, &psz, &inbuf, (char**)&buf, &outbuf );
+            cres = iconv(m2w, &pszPtr, &inbuf, (char**)&bufPtr, &outbuf);
 #endif
-            res = n-(outbuf/SIZEOF_WCHAR_T);
+            res = n - (outbuf / SIZEOF_WCHAR_T);
             // convert to native endianness
-            WC_BSWAP(buf, res)
+#ifdef WC_NEED_BSWAP
+            WC_BSWAP(buf /* _not_ bufPtr */, res)
+#endif
         }
         else
         {
@@ -472,39 +531,38 @@ public:
             wchar_t tbuf[8];
             res = 0;
             do {
-                buf = tbuf; outbuf = 8*SIZEOF_WCHAR_T;
+                bufPtr = tbuf; outbuf = 8*SIZEOF_WCHAR_T;
 #ifdef WX_ICONV_TAKES_CHAR
-                cres = iconv( m2w, (char**)&psz, &inbuf, (char**)&buf, &outbuf );
+                cres = iconv( m2w, (char**)&pszPtr, &inbuf, (char**)&bufPtr, &outbuf );
 #else
-                cres = iconv( m2w, &psz, &inbuf, (char**)&buf, &outbuf );
+                cres = iconv( m2w, &pszPtr, &inbuf, (char**)&bufPtr, &outbuf );
 #endif
                 res += 8-(outbuf/SIZEOF_WCHAR_T);
             } while ((cres==(size_t)-1) && (errno==E2BIG));
         }
-        
-        if (cres==(size_t)-1)
+
+        if (ICONV_FAILED(cres, inbuf))
             return (size_t)-1;
-            
+
         return res;
     }
-    
-    size_t WC2MB(char*buf, const wchar_t*psz, size_t n)
+
+    size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
     {
-        LoadW2M();
 #if defined(__BORLANDC__) && (__BORLANDC__ > 0x530)
-        size_t inbuf = std::wcslen(psz);
+        size_t inbuf = std::wcslen(psz) * SIZEOF_WCHAR_T;
 #else
-        size_t inbuf = ::wcslen(psz);
+        size_t inbuf = ::wcslen(psz) * SIZEOF_WCHAR_T;
 #endif
         size_t outbuf = n;
         size_t res, cres;
-        fprintf(stderr,"IC Convert from WC using %s\n",(const char*)wxConvLibc.cWX2MB(cname));
+
 #ifdef WC_NEED_BSWAP
         // need to copy to temp buffer to switch endianness
         // this absolutely doesn't rock!
         // (no, doing WC_BSWAP twice on the original buffer won't help, as it
         //  could be in read-only memory, or be accessed in some other thread)
-        wchar_t*tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
+        wchar_t *tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
         memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
         WC_BSWAP(tmpbuf, inbuf)
         psz=tmpbuf;
@@ -538,15 +596,15 @@ public:
 #ifdef WC_NEED_BSWAP
         free(tmpbuf);
 #endif
-        if (cres==(size_t)-1)
+        if (ICONV_FAILED(cres, inbuf))
             return (size_t)-1;
-            
+
         return res;
     }
-    
+
     bool usable()
-        { return TRUE; }
-  
+        { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
+
 public:
     iconv_t m2w, w2m;
 };
@@ -556,23 +614,25 @@ public:
 class CP_CharSet : public wxCharacterSet
 {
 public:
-    CP_CharSet(const wxChar*name) 
+    CP_CharSet(const wxChar*name)
         : wxCharacterSet(name), CodePage(CharsetToCodepage(name)) {}
-        
-    size_t MB2WC(wchar_t*buf, const char*psz, size_t n)
+
+    size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
     {
-        size_t len = MultiByteToWideChar(CodePage,0,psz,-1,buf,buf?n:0);
+        size_t len =
+            MultiByteToWideChar(CodePage, 0, psz, -1, buf, buf ? n : 0);
         return len ? len : (size_t)-1;
     }
-    
-    size_t WC2MB(char*buf, const wchar_t*psz, size_t n)
+
+    size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
     {
-        size_t len = WideCharToMultiByte(CodePage,0,psz,-1,buf,buf?n:0,NULL,NULL);
+        size_t len = WideCharToMultiByte(CodePage, 0, psz, -1, buf,
+                                         buf ? n : 0, NULL, NULL);
         return len ? len : (size_t)-1;
     }
-    
+
     bool usable()
-        { return CodePage!=-1; }
+        { return CodePage != -1; }
 
 public:
     long CodePage;
@@ -584,36 +644,36 @@ class EC_CharSet : public wxCharacterSet
 public:
     // temporarily just use wxEncodingConverter stuff,
     // so that it works while a better implementation is built
-    EC_CharSet(const wxChar*name) : wxCharacterSet(name), enc(wxFONTENCODING_SYSTEM)
+    EC_CharSet(const wxChar*name) : wxCharacterSet(name),
+                                    enc(wxFONTENCODING_SYSTEM)
     {
         if (name)
             enc = wxTheFontMapper->CharsetToEncoding(name, FALSE);
         m2w.Init(enc, wxFONTENCODING_UNICODE);
         w2m.Init(wxFONTENCODING_UNICODE, enc);
     }
-    
-    size_t MB2WC(wchar_t*buf, const char*psz, size_t n)
+
+    size_t MB2WC(wchar_t *buf, const char *psz, size_t n)
     {
         size_t inbuf = strlen(psz);
-        fprintf(stderr,"EC Convert to WC using %d\n",enc);
-        if (buf) m2w.Convert(psz,buf);
+        if (buf)
+            m2w.Convert(psz,buf);
         return inbuf;
     }
-    
-    size_t WC2MB(char*buf, const wchar_t*psz, size_t n)
+
+    size_t WC2MB(char *buf, const wchar_t *psz, size_t n)
     {
 #if defined(__BORLANDC__) && (__BORLANDC__ > 0x530)
         size_t inbuf = std::wcslen(psz);
 #else
         size_t inbuf = ::wcslen(psz);
 #endif
-        fprintf(stderr,"EC Convert from WC using %d\n",enc);
         if (buf)
             w2m.Convert(psz,buf);
-            
+
         return inbuf;
     }
-    
+
     bool usable()
         { return (enc!=wxFONTENCODING_SYSTEM) && (enc!=wxFONTENCODING_DEFAULT); }
 
@@ -627,7 +687,7 @@ static wxCharacterSet *wxGetCharacterSet(const wxChar *name)
     wxCharacterSet *cset = NULL;
     if (name)
     {
-        if (!wxStricmp(name, wxT("UTF8")) || !wxStricmp(name, wxT("UTF-8")))
+        if (wxStricmp(name, wxT("UTF8")) == 0 || wxStricmp(name, wxT("UTF-8")) == 0)
         {
             cset = new ID_CharSet(name, &wxConvUTF8);
         }
@@ -638,32 +698,42 @@ static wxCharacterSet *wxGetCharacterSet(const wxChar *name)
 #endif
         }
     }
-    
+
     if (cset && cset->usable()) return cset;
-    if (cset) delete cset;
+    if (cset)
+    {
+        delete cset;
+        cset = NULL;
+    }
+
 #ifdef __WIN32__
     cset = new CP_CharSet(name); // may take NULL
-    if (cset->usable()) return cset;
-#endif
-    if (cset) delete cset;
+    if (cset->usable())
+        return cset;
+
+    delete cset;
+#endif // __WIN32__
+
     cset = new EC_CharSet(name);
-    if (cset->usable()) return cset;
+    if (cset->usable())
+        return cset;
+
     delete cset;
+    wxLogError(_("Unknown encoding '%s'!"), name);
     return NULL;
 }
 
 wxCSConv::wxCSConv(const wxChar *charset)
 {
-    m_name = (wxChar *) NULL;
+    m_name = (wxChar *)NULL;
     m_cset = (wxCharacterSet *) NULL;
-    m_deferred = TRUE;
     SetName(charset);
 }
 
 wxCSConv::~wxCSConv()
 {
-    if (m_name) free(m_name);
-    if (m_cset) delete m_cset;
+    free(m_name);
+    delete m_cset;
 }
 
 void wxCSConv::SetName(const wxChar *charset)
@@ -677,33 +747,15 @@ void wxCSConv::SetName(const wxChar *charset)
 
 void wxCSConv::LoadNow()
 {
-//  wxPrintf(wxT("Conversion request\n"));
     if (m_deferred)
     {
-        if (!m_name)
+        if ( !m_name )
         {
-#ifdef __UNIX__
-#if defined(HAVE_LANGINFO_H) && defined(CODESET)
-            // GNU libc provides current character set this way
-            char*alang = nl_langinfo(CODESET);
-            if (alang)
-            {
-                SetName(wxConvLibc.cMB2WX(alang));
-            }
-            else
-#endif
-            {
-                // if we can't get at the character set directly,
-                // try to see if it's in the environment variables
-                // (in most cases this won't work, but I was out of ideas)
-                wxChar *lang = wxGetenv(wxT("LC_ALL"));
-                if (!lang) lang = wxGetenv(wxT("LC_CTYPE"));
-                if (!lang) lang = wxGetenv(wxT("LANG"));
-                wxChar *dot = lang ? wxStrchr(lang, wxT('.')) : (wxChar *)NULL;
-                if (dot) SetName(dot+1);
-            }
-#endif
+            wxString name = wxLocale::GetSystemEncodingName();
+            if ( !name.empty() )
+                SetName(name);
         }
+
         m_cset = wxGetCharacterSet(m_name);
         m_deferred = FALSE;
     }
@@ -712,26 +764,26 @@ void wxCSConv::LoadNow()
 size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 {
     ((wxCSConv *)this)->LoadNow(); // discard constness
-    
+
     if (m_cset)
         return m_cset->MB2WC(buf, psz, n);
 
     // latin-1 (direct)
-    size_t len=strlen(psz);
-    
+    size_t len = strlen(psz);
+
     if (buf)
     {
-        for (size_t c=0; c<=len; c++)
+        for (size_t c = 0; c <= len; c++)
             buf[c] = (unsigned char)(psz[c]);
     }
-    
+
     return len;
 }
 
 size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 {
     ((wxCSConv *)this)->LoadNow(); // discard constness
-    
+
     if (m_cset)
         return m_cset->WC2MB(buf, psz, n);
 
@@ -743,24 +795,31 @@ size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 #endif
     if (buf)
     {
-        for (size_t c=0; c<=len; c++)
-            buf[c] = (psz[c]>0xff) ? '?' : psz[c];
+        for (size_t c = 0; c <= len; c++)
+            buf[c] = (psz[c] > 0xff) ? '?' : psz[c];
     }
-    
+
     return len;
 }
 
 #ifdef HAVE_ICONV_H
+
 class IC_CharSetConverter
 {
 public:
-    IC_CharSetConverter(IC_CharSet*from,IC_CharSet*to)
-        { cnv = iconv_open(wxConvLibc.cWX2MB(to->cname),wxConvLibc.cWX2MB(from->cname)); }
-        
+    IC_CharSetConverter(IC_CharSet *from, IC_CharSet *to)
+    {
+        cnv = iconv_open(wxConvLibc.cWX2MB(to->cname),
+                         wxConvLibc.cWX2MB(from->cname));
+    }
+
     ~IC_CharSetConverter()
-        { if (cnv!=(iconv_t)-1) iconv_close(cnv); }
-        
-    size_t Convert(char*buf, const char*psz, size_t n)
+    {
+        if (cnv != (iconv_t)-1)
+            iconv_close(cnv);
+    }
+
+    size_t Convert(char *buf, const char *psz, size_t n)
     {
         size_t inbuf = strlen(psz);
         size_t outbuf = n;
@@ -769,28 +828,30 @@ public:
 #else
         size_t res = iconv( cnv, &psz, &inbuf, &buf, &outbuf );
 #endif
-        if (res==(size_t)-1) return (size_t)-1;
-        return n-outbuf;
+        if (res == (size_t)-1)
+            return (size_t)-1;
+        return (n - outbuf);
     }
 
 public:
     iconv_t cnv;
 };
-#endif
+
+#endif // HAVE_ICONV_H
 
 class EC_CharSetConverter
 {
 public:
     EC_CharSetConverter(EC_CharSet*from,EC_CharSet*to)
         { cnv.Init(from->enc,to->enc); }
-        
+
     size_t Convert(char*buf, const char*psz, size_t n)
     {
         size_t inbuf = strlen(psz);
         if (buf) cnv.Convert(psz,buf);
         return inbuf;
     }
-  
+
 public:
     wxEncodingConverter cnv;
 };