Avoid using buffer of already deallocated string in wxHTMLDataObject.

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

diff --git a/src/common/fontmap.cpp b/src/common/fontmap.cpp
index 081c2c5215d08b878e4d180639b888a3c6980042..ee567ab31d8d670fadd506b6f6b7c25e567f8239 100644 (file)
--- a/src/common/fontmap.cpp
+++ b/src/common/fontmap.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        common/fontmap.cpp
+// Name:        src/common/fontmap.cpp

 // Purpose:     wxFontMapper class
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     04.11.99
 // RCS-ID:      $Id$
 // Purpose:     wxFontMapper class
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     04.11.99
 // RCS-ID:      $Id$

-// Copyright:   (c) Vadim Zeitlin
-// Licence:     wxWindows license
+// Copyright:   (c) 1999-2003 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence:     wxWindows licence

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


@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-    #pragma implementation "fontmap.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -28,24 +24,127 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

+#if wxUSE_FONTMAP
+
+#include "wx/fontmap.h"
+

 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/log.h"
     #include "wx/intl.h"
 #ifndef WX_PRECOMP
     #include "wx/app.h"
     #include "wx/log.h"
     #include "wx/intl.h"

+    #include "wx/msgdlg.h"
+    #include "wx/choicdlg.h"

 #endif // PCH
 
 #endif // PCH
 

-#include "wx/fontmap.h"
-#include "wx/config.h"
-#include "wx/choicdlg.h"
+#if wxUSE_CONFIG
+    #include "wx/config.h"
+#endif // wxUSE_CONFIG
+
+#if defined(__WXMSW__)
+  #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
+  #include  "wx/msw/winundef.h"
+#endif
+
+#include "wx/fmappriv.h"
+#include "wx/fontutil.h"
+#include "wx/fontdlg.h"
+#include "wx/encinfo.h"
+
+#include "wx/encconv.h"
+
+// ----------------------------------------------------------------------------
+// XTI
+// ----------------------------------------------------------------------------
+
+wxBEGIN_ENUM( wxFontEncoding )
+wxENUM_MEMBER( wxFONTENCODING_SYSTEM )
+wxENUM_MEMBER( wxFONTENCODING_DEFAULT )
+
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_1 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_2 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_3 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_4 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_5 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_6 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_7 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_8 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_9 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_10 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_11 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_12 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_13 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_14 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_15 )
+wxENUM_MEMBER( wxFONTENCODING_ISO8859_MAX )
+wxENUM_MEMBER( wxFONTENCODING_KOI8 )
+wxENUM_MEMBER( wxFONTENCODING_KOI8_U )
+wxENUM_MEMBER( wxFONTENCODING_ALTERNATIVE )
+wxENUM_MEMBER( wxFONTENCODING_BULGARIAN )
+wxENUM_MEMBER( wxFONTENCODING_CP437 )
+wxENUM_MEMBER( wxFONTENCODING_CP850 )
+wxENUM_MEMBER( wxFONTENCODING_CP852 )
+wxENUM_MEMBER( wxFONTENCODING_CP855 )
+wxENUM_MEMBER( wxFONTENCODING_CP866 )
+
+wxENUM_MEMBER( wxFONTENCODING_CP874 )
+wxENUM_MEMBER( wxFONTENCODING_CP932 )
+wxENUM_MEMBER( wxFONTENCODING_CP936 )
+wxENUM_MEMBER( wxFONTENCODING_CP949 )
+wxENUM_MEMBER( wxFONTENCODING_CP950 )
+wxENUM_MEMBER( wxFONTENCODING_CP1250 )
+wxENUM_MEMBER( wxFONTENCODING_CP1251 )
+wxENUM_MEMBER( wxFONTENCODING_CP1252 )
+wxENUM_MEMBER( wxFONTENCODING_CP1253 )
+wxENUM_MEMBER( wxFONTENCODING_CP1254 )
+wxENUM_MEMBER( wxFONTENCODING_CP1255 )
+wxENUM_MEMBER( wxFONTENCODING_CP1256 )
+wxENUM_MEMBER( wxFONTENCODING_CP1257 )
+wxENUM_MEMBER( wxFONTENCODING_CP1258 )
+wxENUM_MEMBER( wxFONTENCODING_CP1361 )
+wxENUM_MEMBER( wxFONTENCODING_CP12_MAX )
+wxENUM_MEMBER( wxFONTENCODING_UTF7 )
+wxENUM_MEMBER( wxFONTENCODING_UTF8 )
+wxENUM_MEMBER( wxFONTENCODING_GB2312 )
+wxENUM_MEMBER( wxFONTENCODING_BIG5 )
+wxENUM_MEMBER( wxFONTENCODING_SHIFT_JIS )
+wxENUM_MEMBER( wxFONTENCODING_EUC_JP )
+wxENUM_MEMBER( wxFONTENCODING_UNICODE )
+wxEND_ENUM( wxFontEncoding )

 
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 
 // the config paths we use
 
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
 
 // the config paths we use

-static const char* FONTMAPPER_ROOT_PATH = _T("FontMapper");
-static const char* FONTMAPPER_CHARSET_PATH = _T("Charsets");
-static const char* FONTMAPPER_CHARSET_ALIAS_PATH = _T("Aliases");
+#if wxUSE_CONFIG
+
+static const wxChar* FONTMAPPER_FONT_FROM_ENCODING_PATH = wxT("Encodings");
+static const wxChar* FONTMAPPER_FONT_DONT_ASK = wxT("none");
+
+#endif // wxUSE_CONFIG
+
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+// it may happen that while we're showing a dialog asking the user about
+// something, another request for an encoding mapping arrives: in this case it
+// is best to not do anything because otherwise we risk to enter an infinite
+// loop so we create an object of this class on stack to test for this in all
+// interactive functions
+class ReentrancyBlocker
+{
+public:
+    ReentrancyBlocker(bool& flag) : m_flagOld(flag), m_flag(flag)
+        { m_flag = true; }
+    ~ReentrancyBlocker() { m_flag = m_flagOld; }
+
+private:
+    bool m_flagOld;
+    bool& m_flag;
+
+    wxDECLARE_NO_COPY_CLASS(ReentrancyBlocker);
+};

 
 // ============================================================================
 // implementation
 
 // ============================================================================
 // implementation


@@ -57,7 +156,6 @@ static const char* FONTMAPPER_CHARSET_ALIAS_PATH = _T("Aliases");
 
 wxFontMapper::wxFontMapper()
 {
 
 wxFontMapper::wxFontMapper()
 {

-    m_config = NULL;

     m_windowParent = NULL;
 }
 
     m_windowParent = NULL;
 }
 


@@ -65,285 +163,361 @@ wxFontMapper::~wxFontMapper()
 {
 }
 
 {
 }
 

-// ----------------------------------------------------------------------------
-// customisation
-// ----------------------------------------------------------------------------
-
-/* static */ const wxChar *wxFontMapper::GetDefaultConfigPath()
+/* static */
+wxFontMapper *wxFontMapper::Get()

 {
 {

-    return FONTMAPPER_ROOT_PATH;
+    wxFontMapperBase *fontmapper = wxFontMapperBase::Get();
+    wxASSERT_MSG( !fontmapper->IsDummy(),
+                 wxT("GUI code requested a wxFontMapper but we only have a wxFontMapperBase.") );
+
+    // Now return it anyway because there's a chance the GUI code might just
+    // only want to call wxFontMapperBase functions and it's better than
+    // crashing by returning NULL
+    return (wxFontMapper *)fontmapper;

 }
 
 }
 

-void wxFontMapper::SetConfigPath(const wxString& prefix)
+wxFontEncoding
+wxFontMapper::CharsetToEncoding(const wxString& charset, bool interactive)

 {
 {

-    wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
-                 _T("an absolute path should be given to "
-                     "wxFontMapper::SetConfigPath()") );
+    // try the ways not needing the users intervention first
+    int encoding = wxFontMapperBase::NonInteractiveCharsetToEncoding(charset);

 
 

-    m_configRootPath = prefix;
-}
+    // if we failed to find the encoding, ask the user -- unless disabled
+    if ( encoding == wxFONTENCODING_UNKNOWN )
+    {
+        // this is the special value which disables asking the user (he had
+        // chosen to suppress this the last time)
+        encoding = wxFONTENCODING_SYSTEM;
+    }
+#if wxUSE_CHOICEDLG
+    else if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
+    {
+        // prepare the dialog data

 
 

+        // the dialog title
+        wxString title(m_titleDialog);
+        if ( !title )
+            title << wxTheApp->GetAppDisplayName() << _(": unknown charset");

 
 

-// ----------------------------------------------------------------------------
-// get config object and path for it
-// ----------------------------------------------------------------------------
+        // the message
+        wxString msg;
+        msg.Printf(_("The charset '%s' is unknown. You may select\nanother charset to replace it with or choose\n[Cancel] if it cannot be replaced"), charset);

 
 

-wxConfigBase *wxFontMapper::GetConfig()
-{
-    if ( !m_config )
-    {
-        // try the default
-        m_config = wxConfig::Get();
+        // the list of choices
+        const size_t count = GetSupportedEncodingsCount();
+
+        wxString *encodingNamesTranslated = new wxString[count];
+
+        for ( size_t i = 0; i < count; i++ )
+        {
+            encodingNamesTranslated[i] = GetEncodingDescription(GetEncoding(i));
+        }
+
+        // the parent window
+        wxWindow *parent = m_windowParent;
+        if ( !parent )
+            parent = wxTheApp->GetTopWindow();
+
+        // do ask the user and get back the index in encodings table
+        int n = wxGetSingleChoiceIndex(msg, title,
+                                       count,
+                                       encodingNamesTranslated,
+                                       parent);
+
+        delete [] encodingNamesTranslated;
+
+        if ( n != -1 )
+        {
+            encoding = GetEncoding(n);
+        }
+
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+        // save the result in the config now
+        wxFontMapperPathChanger path(this, FONTMAPPER_CHARSET_PATH);
+        if ( path.IsOk() )
+        {
+            wxConfigBase *config = GetConfig();
+
+            // remember the alt encoding for this charset -- or remember that
+            // we don't know it
+            long value = n == -1 ? (long)wxFONTENCODING_UNKNOWN : (long)encoding;
+            if ( !config->Write(charset, value) )
+            {
+                wxLogError(_("Failed to remember the encoding for the charset '%s'."), charset);
+            }
+        }
+#endif // wxUSE_CONFIG

     }
     }

+#else
+    wxUnusedVar(interactive);
+#endif // wxUSE_CHOICEDLG

 
 

-    return m_config;
+    return (wxFontEncoding)encoding;

 }
 
 }
 

-const wxString& wxFontMapper::GetConfigPath()
+// ----------------------------------------------------------------------------
+// support for unknown encodings: we maintain a map between the
+// (platform-specific) strings identifying them and our wxFontEncodings they
+// correspond to which is used by GetFontForEncoding() function
+// ----------------------------------------------------------------------------
+
+bool wxFontMapper::TestAltEncoding(const wxString& configEntry,
+                                   wxFontEncoding encReplacement,
+                                   wxNativeEncodingInfo *info)

 {
 {

-    if ( !m_configRootPath )
+    if ( wxGetNativeFontEncoding(encReplacement, info) &&
+         wxTestFontEncoding(*info) )

     {
     {

-        // use the default
-        m_configRootPath = GetDefaultConfigPath();
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+        // remember the mapping in the config
+        wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
+
+        if ( path.IsOk() )
+        {
+            GetConfig()->Write(configEntry, info->ToString());
+        }
+#else
+        wxUnusedVar(configEntry);
+#endif // wxUSE_CONFIG
+        return true;

     }
 
     }
 

-    return m_configRootPath;
+    return false;

 }
 
 }
 

-bool wxFontMapper::ChangePath(const wxString& pathNew, wxString *pathOld)
+bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
+                                     wxNativeEncodingInfo *info,
+                                     const wxString& facename,
+                                     bool interactive)

 {
 {

-    wxConfigBase *config = GetConfig();
-    if ( !config )
-        return FALSE;
+#if wxUSE_GUI
+    // we need a flag to prevent infinite recursion which happens, for
+    // example, when GetAltForEncoding() is called from an OnPaint() handler:
+    // in this case, wxYield() which is called from wxMessageBox() we use here
+    // will lead to another call of OnPaint() and hence to another call of
+    // GetAltForEncoding() -- and it is impossible to catch this from the user
+    // code because we are called from wxFont ctor implicitly.

 
 

-    *pathOld = config->GetPath();
+    // assume we're always called from the main thread, so that it is safe to
+    // use a static var
+    static bool s_inGetAltForEncoding = false;

 
 

-    wxString path = GetConfigPath();
-    if ( path.IsEmpty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
-    {
-        path += wxCONFIG_PATH_SEPARATOR;
-    }
+    if ( interactive && s_inGetAltForEncoding )
+        return false;

 
 

-    wxASSERT_MSG( !pathNew || (pathNew[0] != wxCONFIG_PATH_SEPARATOR),
-                  _T("should be a relative path") );
+    ReentrancyBlocker blocker(s_inGetAltForEncoding);
+#endif // wxUSE_GUI

 
 

-    path += pathNew;
+    wxCHECK_MSG( info, false, wxT("bad pointer in GetAltForEncoding") );

 
 

-    config->SetPath(path);
+    info->facename = facename;

 
 

-    return TRUE;
-}
+    if ( encoding == wxFONTENCODING_DEFAULT )
+    {
+        encoding = wxFont::GetDefaultEncoding();
+    }

 
 

-void wxFontMapper::RestorePath(const wxString& pathOld)
-{
-    GetConfig()->SetPath(pathOld);
-}
+    // if we failed to load the system default encoding, something is really
+    // wrong and we'd better stop now -- otherwise we will go into endless
+    // recursion trying to create the font in the msg box with the error
+    // message
+    if ( encoding == wxFONTENCODING_SYSTEM )
+    {
+        wxLogFatalError(_("can't load any font, aborting"));

 
 

-// ----------------------------------------------------------------------------
-// charset/encoding correspondence
-// ----------------------------------------------------------------------------
+        // wxLogFatalError doesn't return
+    }

 
 

-wxFontEncoding wxFontMapper::CharsetToEncoding(const wxString& charset,
-                                               bool interactive)
-{
-    wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
+    wxString configEntry,
+             encName = GetEncodingName(encoding);
+    if ( !facename.empty() )
+    {
+        configEntry = facename + wxT("_");
+    }
+    configEntry += encName;

 
 

-    // we're going to modify it, make a copy
-    wxString cs = charset;
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+    // do we have a font spec for this encoding?
+    wxString fontinfo;
+    wxFontMapperPathChanger path(this, FONTMAPPER_FONT_FROM_ENCODING_PATH);
+    if ( path.IsOk() )
+    {
+        fontinfo = GetConfig()->Read(configEntry);
+    }

 
 

-    // first try the user-defined settings
-    wxString pathOld;
-    if ( ChangePath(FONTMAPPER_CHARSET_PATH, &pathOld) )
+    // this special value means that we don't know of fonts for this
+    // encoding but, moreover, have already asked the user as well and he
+    // didn't specify any font neither
+    if ( fontinfo == FONTMAPPER_FONT_DONT_ASK )
+    {
+        interactive = false;
+    }
+    else // use the info entered the last time

     {
     {

-        wxConfigBase *config = GetConfig();
+        if ( !fontinfo.empty() && !facename.empty() )
+        {
+            // we tried to find a match with facename -- now try without it
+            fontinfo = GetConfig()->Read(encName);
+        }

 
 

-        // do we have an encoding for this charset?
-        long value = config->Read(charset, -1l);
-        if ( value != -1 )
+        if ( !fontinfo.empty() )

         {
         {

-            if ( value >= 0 && value <= wxFONTENCODING_MAX )
+            if ( info->FromString(fontinfo) )

             {
             {

-                encoding = (wxFontEncoding)value;
+                if ( wxTestFontEncoding(*info) )
+                {
+                    // ok, got something
+                    return true;
+                }
+                //else: no such fonts, look for something else
+                //      (should we erase the outdated value?)

             }
             else
             {
             }
             else
             {

-                wxLogDebug(_T("corrupted config data - invalid encoding %ld "
-                              "for charset '%s'"), value, charset.c_str());
+                wxLogDebug(wxT("corrupted config data: string '%s' is not a valid font encoding info"),
+                           fontinfo);

             }
         }
             }
         }

-
-        if ( encoding == wxFONTENCODING_SYSTEM )
+        //else: there is no information in config about this encoding
+    }
+#endif // wxUSE_CONFIG
+
+    // now try to map this encoding to a compatible one which we have on this
+    // system
+    wxFontEncodingArray equiv = wxEncodingConverter::GetAllEquivalents(encoding);
+    size_t count = equiv.GetCount();
+    bool foundEquivEncoding = false;
+    wxFontEncoding equivEncoding = wxFONTENCODING_SYSTEM;
+    if ( count )
+    {
+        for ( size_t i = 0; i < count && !foundEquivEncoding; i++ )

         {
         {

-            // may be we have an alias?
-            config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
+            // don't test for encoding itself, we already know we don't have it
+            if ( equiv[i] == encoding )
+                continue;

 
 

-            wxString alias = config->Read(charset);
-            if ( !!alias )
+            if ( TestAltEncoding(configEntry, equiv[i], info) )

             {
             {

-                // yes, we do - use it instead
-                cs = alias;
+                equivEncoding = equiv[i];
+
+                foundEquivEncoding = true;

             }
         }
             }
         }

-
-        RestorePath(pathOld);

     }
 
     }
 

-    // if didn't find it there, try to reckognise it ourselves
-    if ( encoding == wxFONTENCODING_SYSTEM )
+    // ask the user
+#if wxUSE_FONTDLG
+    if ( interactive )

     {
     {

-        cs.MakeUpper();
+        wxString title(m_titleDialog);
+        if ( !title )
+            title << wxTheApp->GetAppDisplayName() << _(": unknown encoding");

 
 

-        if ( !cs || cs == _T("US-ASCII") )
-            encoding = wxFONTENCODING_DEFAULT;
-        else if ( cs == _T("KOI8-R") || cs == _T("KOI8-U") )
-            encoding = wxFONTENCODING_KOI8;
-        else if ( cs.Left(3) == _T("ISO") )
+        // built the message
+        wxString encDesc = GetEncodingDescription(encoding),
+                 msg;
+        if ( foundEquivEncoding )
+        {
+            // ask the user if he wants to override found alternative encoding
+            msg.Printf(_("No font for displaying text in encoding '%s' found,\nbut an alternative encoding '%s' is available.\nDo you want to use this encoding (otherwise you will have to choose another one)?"),
+                       encDesc, GetEncodingDescription(equivEncoding));
+        }
+        else

         {
         {

-            // the dash is optional (or, to be exact, it is not, but
-            // several brokenmails "forget" it)
-            const wxChar *p = cs.c_str() + 3;
-            if ( *p == _T('-') )
-                p++;
-
-            unsigned int value;
-            if ( wxSscanf(p, _T("8859-%u"), &value) == 1 )
+            msg.Printf(_("No font for displaying text in encoding '%s' found.\nWould you like to select a font to be used for this encoding\n(otherwise the text in this encoding will not be shown correctly)?"),
+                       encDesc);
+        }
+
+        // the question is different in 2 cases so the answer has to be
+        // interpreted differently as well
+        int answer = foundEquivEncoding ? wxNO : wxYES;
+
+        if ( wxMessageBox(msg, title,
+                          wxICON_QUESTION | wxYES_NO,
+                          m_windowParent) == answer )
+        {
+            wxFontData data;
+            data.SetEncoding(encoding);
+            data.EncodingInfo() = *info;
+            wxFontDialog dialog(m_windowParent, data);
+            if ( dialog.ShowModal() == wxID_OK )

             {
             {

-                if ( value < wxFONTENCODING_ISO8859_MAX -
-                             wxFONTENCODING_ISO8859_1 )
+                wxFontData retData = dialog.GetFontData();
+
+                *info = retData.EncodingInfo();
+                info->encoding = retData.GetEncoding();
+
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+                // remember this in the config
+                wxFontMapperPathChanger path2(this,
+                                              FONTMAPPER_FONT_FROM_ENCODING_PATH);
+                if ( path2.IsOk() )

                 {
                 {

-                    // it's a valid ISO8859 encoding
-                    value += wxFONTENCODING_ISO8859_1 - 1;
-                    encoding = (wxFontEncoding)value;
+                    GetConfig()->Write(configEntry, info->ToString());

                 }
                 }

+#endif // wxUSE_CONFIG
+
+                return true;

             }
             }

+            //else: the user canceled the font selection dialog

         }
         }

-        else if ( cs.Left(8) == _T("WINDOWS-") )
+        else

         {
         {

-            int value;
-            if ( wxSscanf(cs.c_str() + 8, "%u", &value) == 1 )
+            // the user doesn't want to select a font for this encoding
+            // or selected to use equivalent encoding
+            //
+            // remember it to avoid asking the same question again later
+#if wxUSE_CONFIG && wxUSE_FILECONFIG
+            wxFontMapperPathChanger path2(this,
+                                          FONTMAPPER_FONT_FROM_ENCODING_PATH);
+            if ( path2.IsOk() )

             {
             {

-                if ( value >= 1250 )
-                {
-                    value -= 1250;
-                    if ( value < wxFONTENCODING_CP12_MAX -
-                                 wxFONTENCODING_CP1250 - 1 )
-                    {
-                        // a valid Windows code page
-                        value += wxFONTENCODING_CP1250;
-                        encoding = (wxFontEncoding)value;
-                    }
-                }
+                GetConfig()->Write
+                             (
+                                configEntry,
+                                foundEquivEncoding
+                                    ? (const wxChar*)info->ToString().c_str()
+                                    : FONTMAPPER_FONT_DONT_ASK
+                             );

             }
             }

+#endif // wxUSE_CONFIG

         }
         }

-        //else: unknown

     }
     }

+    //else: we're in non-interactive mode
+#else
+    wxUnusedVar(equivEncoding);
+#endif // wxUSE_FONTDLG

 
 

-    // if still no luck, ask the user - unless disabled
-    if ( (encoding == wxFONTENCODING_SYSTEM) && interactive )
-    {
-        // prepare the dialog data
-
-        // the dialog title
-        wxString title(m_titleDialog);
-        if ( !title )
-            title << wxTheApp->GetAppName() << _(": unknown charset");
+    return foundEquivEncoding;
+}

 
 

-        // the message
-        wxString msg;
-        msg.Printf(_("The charset '%s' is unknown. You may select another "
-                     "charset to replace it with or choose [Cancel] if it "
-                     "cannot be replaced"), charset.c_str());
+bool wxFontMapper::GetAltForEncoding(wxFontEncoding encoding,
+                                     wxFontEncoding *encodingAlt,
+                                     const wxString& facename,
+                                     bool interactive)
+{
+    wxCHECK_MSG( encodingAlt, false,
+                    wxT("wxFontEncoding::GetAltForEncoding(): NULL pointer") );

 
 

-        // the list of choices
-        static wxFontEncoding encodings[] =
-        {
-            wxFONTENCODING_ISO8859_1,
-            wxFONTENCODING_ISO8859_2,
-            wxFONTENCODING_ISO8859_3,
-            wxFONTENCODING_ISO8859_4,
-            wxFONTENCODING_ISO8859_5,
-            wxFONTENCODING_ISO8859_6,
-            wxFONTENCODING_ISO8859_7,
-            wxFONTENCODING_ISO8859_8,
-            wxFONTENCODING_ISO8859_9,
-            wxFONTENCODING_ISO8859_10,
-            wxFONTENCODING_ISO8859_11,
-            wxFONTENCODING_ISO8859_12,
-            wxFONTENCODING_ISO8859_13,
-            wxFONTENCODING_ISO8859_14,
-            wxFONTENCODING_ISO8859_15,
-            wxFONTENCODING_KOI8,
-            wxFONTENCODING_CP1250,
-            wxFONTENCODING_CP1251,
-            wxFONTENCODING_CP1252,
-            wxFONTENCODING_CP1253,
-            wxFONTENCODING_CP1254,
-            wxFONTENCODING_CP1255,
-            wxFONTENCODING_CP1256,
-            wxFONTENCODING_CP1257,
-        };
-
-        static const wxChar* encodingNames[] =
-        {
-            "West European (ISO-8859-1/Latin 1)",
-            "Central European (ISO-8859-2/Latin 2)",
-            "Esperanto (ISO-8859-3)",
-            "Baltic (ISO-8859-4)",
-            "Cyrillic (Latin 5)",
-            "Arabic (ISO-8859-6)"
-            "Greek (ISO-8859-7)",
-            "Hebrew (ISO-8859-8)",
-            "Turkish (ISO-8859-9)",
-            "Baltic II (ISO-8859-10)",
-            "Thai (ISO-8859-11)",
-            "ISO-8859-12",
-            "ISO-8859-13",
-            "ISO-8859-14",
-            "West European new (ISO-8859-15/Latin 0)",
-            "KOI8-R",
-            "Windows Latin 2 (CP 1250)",
-            "Windows Cyrillic (CP 1251)",
-            "Windows Latin 1 (CP 1252)",
-            "Windows Greek (CP 1253)",
-            "Windows Turkish (CP 1254)",
-            "Windows Hebrew (CP 1255)",
-            "Windows Arabic (CP 1256)",
-            "Windows Baltic (CP 1257)",
-        };
-
-        size_t count = WXSIZEOF(encodingNames);
-
-        wxASSERT_MSG( count == WXSIZEOF(encodings),
-                      _T("inconsitency detected - forgot to update one of "
-                         "the arrays?") );
+    wxNativeEncodingInfo info;
+    if ( !GetAltForEncoding(encoding, &info, facename, interactive) )
+        return false;

 
 

-        wxString *encodingNamesTranslated = new wxString[count];
+    *encodingAlt = info.encoding;

 
 

-        for ( size_t n = 0; n < count; n++ )
-        {
-            encodingNamesTranslated[n] = wxGetTranslation(encodingNames[n]);
-        }
-
-        // the parent window
-        wxWindow *parent = m_windowParent;
-        if ( !parent )
-            parent = wxTheApp->GetTopWindow();
-
-        // do ask the user and get back the index in encodings table
-        int n = wxGetSingleChoiceIndex(msg, title,
-                                       count,
-                                       encodingNamesTranslated,
-                                       parent);
+    return true;
+}

 
 

-        delete [] encodingNamesTranslated;
+bool wxFontMapper::IsEncodingAvailable(wxFontEncoding encoding,
+                                       const wxString& facename)
+{
+    wxNativeEncodingInfo info;

 
 

-        if ( n != -1 )
-        {
-            encoding = encodings[n];
-        }
-        //else: cancelled
-    }
+    if ( !wxGetNativeFontEncoding(encoding, &info) )
+        return false;

 
 

-    return encoding;
+    info.facename = facename;
+    return wxTestFontEncoding(info);

 }
 
 }
 

+#endif // wxUSE_FONTMAP