]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/fmapbase.cpp
don't pass 0 time_t to Borland localtime(), it crashes (bug 1704438); also check...
[wxWidgets.git] / src / common / fmapbase.cpp
index 2358475b486f6c12f373860a5d3cc491c9191de5..48e1b2e148bc9a5a4953d00371b4a505a6faa668 100644 (file)
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        common/fmapbase.cpp
+// Name:        src/common/fmapbase.cpp
 // Purpose:     wxFontMapperBase class implementation
 // Author:      Vadim Zeitlin
 // Modified by:
     #include "wx/app.h"
     #include "wx/log.h"
     #include "wx/intl.h"
+    #include "wx/module.h"
 #endif //WX_PRECOMP
 
 #if defined(__WXMSW__)
-  #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
-  #include  "wx/msw/winundef.h"
+    #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
+    #include  "wx/msw/winundef.h"
 #endif
 
 #include "wx/fontmap.h"
 #include "wx/fmappriv.h"
 
 #include "wx/apptrait.h"
-#include "wx/module.h"
 
 // wxMemoryConfig uses wxFileConfig
 #if wxUSE_CONFIG && wxUSE_FILECONFIG
@@ -89,13 +89,15 @@ static wxFontEncoding gs_encodings[] =
     wxFONTENCODING_CP437,
     wxFONTENCODING_UTF7,
     wxFONTENCODING_UTF8,
-    wxFONTENCODING_UTF16,
     wxFONTENCODING_UTF16BE,
     wxFONTENCODING_UTF16LE,
-    wxFONTENCODING_UTF32,
     wxFONTENCODING_UTF32BE,
     wxFONTENCODING_UTF32LE,
     wxFONTENCODING_EUC_JP,
+    wxFONTENCODING_DEFAULT,
+    wxFONTENCODING_BIG5,
+    wxFONTENCODING_SHIFT_JIS,
+    wxFONTENCODING_GB2312,
 };
 
 // the descriptions for them
@@ -134,63 +136,93 @@ static const wxChar* gs_encodingDescs[] =
     wxTRANSLATE( "Windows/DOS OEM (CP 437)" ),
     wxTRANSLATE( "Unicode 7 bit (UTF-7)" ),
     wxTRANSLATE( "Unicode 8 bit (UTF-8)" ),
+#ifdef WORDS_BIGENDIAN
     wxTRANSLATE( "Unicode 16 bit (UTF-16)" ),
-    wxTRANSLATE( "Unicode 16 bit Big Endian (UTF-16BE)" ),
     wxTRANSLATE( "Unicode 16 bit Little Endian (UTF-16LE)" ),
     wxTRANSLATE( "Unicode 32 bit (UTF-32)" ),
-    wxTRANSLATE( "Unicode 32 bit Big Endian (UTF-32BE)" ),
     wxTRANSLATE( "Unicode 32 bit Little Endian (UTF-32LE)" ),
+#else // WORDS_BIGENDIAN
+    wxTRANSLATE( "Unicode 16 bit Big Endian (UTF-16BE)" ),
+    wxTRANSLATE( "Unicode 16 bit (UTF-16)" ),
+    wxTRANSLATE( "Unicode 32 bit Big Endian (UTF-32BE)" ),
+    wxTRANSLATE( "Unicode 32 bit (UTF-32)" ),
+#endif // WORDS_BIGENDIAN
     wxTRANSLATE( "Extended Unix Codepage for Japanese (EUC-JP)" ),
+    wxTRANSLATE( "US-ASCII" ),
+    wxTRANSLATE( "BIG5" ),
+    wxTRANSLATE( "SHIFT-JIS" ),
+    wxTRANSLATE( "GB-2312" ),
 };
 
 // and the internal names (these are not translated on purpose!)
-static const wxChar* gs_encodingNames[] =
+static const wxChar* gs_encodingNames[WXSIZEOF(gs_encodingDescs)][9] =
 {
-    wxT( "iso-8859-1" ),
-    wxT( "iso-8859-2" ),
-    wxT( "iso-8859-3" ),
-    wxT( "iso-8859-4" ),
-    wxT( "iso-8859-5" ),
-    wxT( "iso-8859-6" ),
-    wxT( "iso-8859-7" ),
-    wxT( "iso-8859-8" ),
-    wxT( "iso-8859-9" ),
-    wxT( "iso-8859-10" ),
-    wxT( "iso-8859-11" ),
-    wxT( "iso-8859-12" ),
-    wxT( "iso-8859-13" ),
-    wxT( "iso-8859-14" ),
-    wxT( "iso-8859-15" ),
-    wxT( "koi8-r" ),
-    wxT( "koi8-u" ),
-    wxT( "windows-874" ),
-    wxT( "windows-932" ),
-    wxT( "windows-936" ),
-    wxT( "windows-949" ),
-    wxT( "windows-950" ),
-    wxT( "windows-1250" ),
-    wxT( "windows-1251" ),
-    wxT( "windows-1252" ),
-    wxT( "windows-1253" ),
-    wxT( "windows-1254" ),
-    wxT( "windows-1255" ),
-    wxT( "windows-1256" ),
-    wxT( "windows-1257" ),
-    wxT( "windows-437" ),
-    wxT( "utf-7" ),
-    wxT( "utf-8" ),
-    wxT( "utf-16" ),
-    wxT( "utf-16be" ),
-    wxT( "utf-16le" ),
-    wxT( "utf-32" ),
-    wxT( "utf-32be" ),
-    wxT( "utf-32le" ),
-    wxT( "euc-jp" ),
+    // names from the columns correspond to these OS:
+    //      Linux        Solaris and IRIX       HP-UX             AIX
+    { _T("ISO-8859-1"),  _T("ISO8859-1"),  _T("iso88591"),  _T("8859-1"), wxT("iso_8859_1"), NULL },
+    { _T("ISO-8859-2"),  _T("ISO8859-2"),  _T("iso88592"),  _T("8859-2"), NULL },
+    { _T("ISO-8859-3"),  _T("ISO8859-3"),  _T("iso88593"),  _T("8859-3"), NULL },
+    { _T("ISO-8859-4"),  _T("ISO8859-4"),  _T("iso88594"),  _T("8859-4"), NULL },
+    { _T("ISO-8859-5"),  _T("ISO8859-5"),  _T("iso88595"),  _T("8859-5"), NULL },
+    { _T("ISO-8859-6"),  _T("ISO8859-6"),  _T("iso88596"),  _T("8859-6"), NULL },
+    { _T("ISO-8859-7"),  _T("ISO8859-7"),  _T("iso88597"),  _T("8859-7"), NULL },
+    { _T("ISO-8859-8"),  _T("ISO8859-8"),  _T("iso88598"),  _T("8859-8"), NULL },
+    { _T("ISO-8859-9"),  _T("ISO8859-9"),  _T("iso88599"),  _T("8859-9"), NULL },
+    { _T("ISO-8859-10"), _T("ISO8859-10"), _T("iso885910"), _T("8859-10"), NULL },
+    { _T("ISO-8859-11"), _T("ISO8859-11"), _T("iso885911"), _T("8859-11"), NULL },
+    { _T("ISO-8859-12"), _T("ISO8859-12"), _T("iso885912"), _T("8859-12"), NULL },
+    { _T("ISO-8859-13"), _T("ISO8859-13"), _T("iso885913"), _T("8859-13"), NULL },
+    { _T("ISO-8859-14"), _T("ISO8859-14"), _T("iso885914"), _T("8859-14"), NULL },
+    { _T("ISO-8859-15"), _T("ISO8859-15"), _T("iso885915"), _T("8859-15"), NULL },
+
+    // although koi8-ru is not strictly speaking the same as koi8-r,
+    // they are similar enough to make mapping it to koi8 better than
+    // not recognizing it at all
+    { wxT( "KOI8-R" ), wxT( "KOI8-RU" ), NULL },
+    { wxT( "KOI8-U" ), NULL },
+
+    { wxT( "WINDOWS-874" ), wxT( "CP-874" ), wxT( "MS-874" ), wxT( "IBM-874" ), NULL },
+    { wxT( "WINDOWS-932" ), wxT( "CP-932" ), wxT( "MS-932" ), wxT( "IBM-932" ), NULL },
+    { wxT( "WINDOWS-936" ), wxT( "CP-936" ), wxT( "MS-936" ), wxT( "IBM-936" ), NULL },
+    { wxT( "WINDOWS-949" ), wxT( "CP-949" ), wxT( "MS-949" ), wxT( "IBM-949" ), wxT( "EUC-KR" ), wxT( "eucKR" ), wxT( "euc_kr" ), NULL },
+    { wxT( "WINDOWS-950" ), wxT( "CP-950" ), wxT( "MS-950" ), wxT( "IBM-950" ), NULL },
+    { wxT( "WINDOWS-1250" ),wxT( "CP-1250" ),wxT( "MS-1250" ),wxT( "IBM-1250" ),NULL },
+    { wxT( "WINDOWS-1251" ),wxT( "CP-1251" ),wxT( "MS-1251" ),wxT( "IBM-1251" ),NULL },
+    { wxT( "WINDOWS-1252" ),wxT( "CP-1252" ),wxT( "MS-1252" ),wxT( "IBM-1252" ),NULL },
+    { wxT( "WINDOWS-1253" ),wxT( "CP-1253" ),wxT( "MS-1253" ),wxT( "IBM-1253" ),NULL },
+    { wxT( "WINDOWS-1254" ),wxT( "CP-1254" ),wxT( "MS-1254" ),wxT( "IBM-1254" ),NULL },
+    { wxT( "WINDOWS-1255" ),wxT( "CP-1255" ),wxT( "MS-1255" ),wxT( "IBM-1255" ),NULL },
+    { wxT( "WINDOWS-1256" ),wxT( "CP-1256" ),wxT( "MS-1256" ),wxT( "IBM-1256" ),NULL },
+    { wxT( "WINDOWS-1257" ),wxT( "CP-1257" ),wxT( "MS-1257" ),wxT( "IBM-1257" ),NULL },
+    { wxT( "WINDOWS-437" ), wxT( "CP-437" ), wxT( "MS-437" ), wxT( "IBM-437" ), NULL },
+
+    { wxT( "UTF-7" ), NULL },
+    { wxT( "UTF-8" ), NULL },
+#ifdef WORDS_BIGENDIAN
+    { wxT( "UTF-16BE" ), wxT("UCS-2BE"), wxT( "UTF-16" ), wxT("UCS-2"), NULL },
+    { wxT( "UTF-16LE" ), wxT("UCS-2LE"), NULL },
+    { wxT( "UTF-32BE" ), wxT( "UCS-4BE" ), wxT( "UTF-32" ), wxT( "UCS-4" ), NULL },
+    { wxT( "UTF-32LE" ), wxT( "UCS-4LE" ), NULL },
+#else // WORDS_BIGENDIAN
+    { wxT( "UTF-16BE" ), wxT("UCS-2BE"), NULL },
+    { wxT( "UTF-16LE" ), wxT("UCS-2LE"), wxT( "UTF-16" ), wxT("UCS-2"), NULL },
+    { wxT( "UTF-32BE" ), wxT( "UCS-4BE" ), NULL },
+    { wxT( "UTF-32LE" ), wxT( "UCS-4LE" ), wxT( "UTF-32" ), wxT( "UCS-4" ), NULL },
+#endif // WORDS_BIGENDIAN
+
+    { wxT( "EUC-JP" ), wxT( "eucJP" ), wxT( "euc_jp" ), wxT( "IBM-eucJP" ), NULL },
+
+    // 646 is for Solaris, roman8 -- for HP-UX
+    { wxT( "US-ASCII" ), wxT( "ASCII" ), wxT("C"), wxT("POSIX"), wxT("ANSI_X3.4-1968"),
+      wxT("646"), wxT("roman8"), wxT( "" ), NULL },
+
+    { wxT( "BIG5" ), wxT("big5"), NULL },
+    { wxT( "SJIS" ), wxT( "SHIFT-JIS" ), wxT( "SHIFT_JIS" ), NULL },
+    { wxT( "GB2312" ), NULL },
 };
 
-wxCOMPILE_TIME_ASSERT( WXSIZEOF(gs_encodingDescs) == WXSIZEOF(gs_encodings) &&
-                       WXSIZEOF(gs_encodingNames) == WXSIZEOF(gs_encodings),
-                       EncodingsArraysNotInSync );
+wxCOMPILE_TIME_ASSERT( WXSIZEOF(gs_encodingDescs) == WXSIZEOF(gs_encodings), EncodingsArraysNotInSync );
+wxCOMPILE_TIME_ASSERT( WXSIZEOF(gs_encodingNames) == WXSIZEOF(gs_encodings), EncodingsArraysNotInSync );
 
 // ----------------------------------------------------------------------------
 // private classes
@@ -201,8 +233,25 @@ class wxFontMapperModule : public wxModule
 {
 public:
     wxFontMapperModule() : wxModule() { }
-    virtual bool OnInit() { return true; }
-    virtual void OnExit() { delete (wxFontMapperBase*)wxFontMapperBase::Set(NULL); }
+
+    virtual bool OnInit()
+    {
+        // a dummy wxFontMapperBase object could have been created during the
+        // program startup before wxApp was created, we have to delete it to
+        // allow creating the real font mapper next time it is needed now that
+        // we can create it (when the modules are initialized, wxApp object
+        // already exists)
+        wxFontMapperBase *fm = wxFontMapperBase::Get();
+        if ( fm && fm->IsDummy() )
+            wxFontMapperBase::Reset();
+
+        return true;
+    }
+
+    virtual void OnExit()
+    {
+        wxFontMapperBase::Reset();
+    }
 
     DECLARE_DYNAMIC_CLASS(wxFontMapperModule)
 };
@@ -223,22 +272,18 @@ wxFontMapper *wxFontMapperBase::sm_instance = NULL;
 wxFontMapperBase::wxFontMapperBase()
 {
 #if wxUSE_CONFIG && wxUSE_FILECONFIG
-    m_config = NULL;
-    m_configIsDummy = false;
+    m_configDummy = NULL;
 #endif // wxUSE_CONFIG
 }
 
 wxFontMapperBase::~wxFontMapperBase()
 {
 #if wxUSE_CONFIG && wxUSE_FILECONFIG
-    if ( m_configIsDummy )
-        delete m_config;
+    if ( m_configDummy )
+        delete m_configDummy;
 #endif // wxUSE_CONFIG
 }
 
-bool wxFontMapperBase::IsWxFontMapper()
-{   return false; }
-
 /* static */
 wxFontMapperBase *wxFontMapperBase::Get()
 {
@@ -272,6 +317,19 @@ wxFontMapper *wxFontMapperBase::Set(wxFontMapper *mapper)
     return old;
 }
 
+/* static */
+void wxFontMapperBase::Reset()
+{
+    if ( sm_instance )
+    {
+        // we need a cast as wxFontMapper is not fully declared here and so the
+        // compiler can't know that it derives from wxFontMapperBase (but
+        // run-time behaviour will be correct because the dtor is virtual)
+        delete (wxFontMapperBase *)sm_instance;
+        sm_instance = NULL;
+    }
+}
+
 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 
 // ----------------------------------------------------------------------------
@@ -286,7 +344,7 @@ const wxChar *wxFontMapperBase::GetDefaultConfigPath()
 
 void wxFontMapperBase::SetConfigPath(const wxString& prefix)
 {
-    wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
+    wxCHECK_RET( !prefix.empty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
                  wxT("an absolute path should be given to wxFontMapper::SetConfigPath()") );
 
     m_configRootPath = prefix;
@@ -298,42 +356,23 @@ void wxFontMapperBase::SetConfigPath(const wxString& prefix)
 
 wxConfigBase *wxFontMapperBase::GetConfig()
 {
-    if ( !m_config )
-    {
-        // try the default
-        m_config = wxConfig::Get(false /*don't create on demand*/ );
-
-        if ( !m_config )
-        {
-            // we still want to have a config object because otherwise we would
-            // keep asking the user the same questions in the interactive mode,
-            // so create a dummy config which won't write to any files/registry
-            // but will allow us to remember the results of the questions at
-            // least during this run
-            m_config = new wxMemoryConfig;
-            m_configIsDummy = true;
-            // VS: we can't call wxConfig::Set(m_config) here because that would
-            //     disable automatic wxConfig instance creation if this code was
-            //     called before wxApp::OnInit (this happens in wxGTK -- it sets
-            //     default wxFont encoding in wxApp::Initialize())
-        }
-    }
+    wxConfigBase *config = wxConfig::Get(false);
 
-    if ( m_configIsDummy && wxConfig::Get(false) != NULL )
+    // If there is no global configuration, use an internal memory configuration
+    if ( !config )
     {
-        // VS: in case we created dummy m_config (see above), we want to switch back
-        //     to the real one as soon as one becomes available.
-        delete m_config;
-        m_config = wxConfig::Get(false);
-        m_configIsDummy = false;
-        // FIXME: ideally, we should add keys from dummy config to the real one now,
+        if ( !m_configDummy )
+            m_configDummy = new wxMemoryConfig;
+        config = m_configDummy;
+
+        // FIXME: ideally, we should add keys from dummy config to a real one later,
         //        but it is a low-priority task because typical wxWin application
         //        either doesn't use wxConfig at all or creates wxConfig object in
         //        wxApp::OnInit(), before any real interaction with the user takes
         //        place...
     }
 
-    return m_config;
+    return config;
 }
 
 const wxString& wxFontMapperBase::GetConfigPath()
@@ -360,7 +399,7 @@ bool wxFontMapperBase::ChangePath(const wxString& pathNew, wxString *pathOld)
     *pathOld = config->GetPath();
 
     wxString path = GetConfigPath();
-    if ( path.IsEmpty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
+    if ( path.empty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
     {
         path += wxCONFIG_PATH_SEPARATOR;
     }
@@ -443,7 +482,7 @@ wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
             config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
 
             wxString alias = config->Read(charset);
-            if ( !alias.IsEmpty() )
+            if ( !alias.empty() )
             {
                 // yes, we do - use it instead
                 cs = alias;
@@ -468,95 +507,25 @@ wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
             }
         }
 
+        // check for known encoding name
+        const wxFontEncoding e = GetEncodingFromName(cs);
+        if ( e != wxFONTENCODING_MAX )
+            return e;
+
+        // deal with general encoding names of the form FOO-xxx
         cs.MakeUpper();
 
-        if ( cs.empty() || cs == _T("US-ASCII") )
-        {
-            encoding = wxFONTENCODING_DEFAULT;
-        }
-        else if ( cs == wxT("UTF-7") )
-        {
-            encoding = wxFONTENCODING_UTF7;
-        }
-        else if ( cs == wxT("UTF-8") )
-        {
-            encoding = wxFONTENCODING_UTF8;
-        }
-        else if ( cs == wxT("UTF-16") )
+        if ( cs.Left(3) == wxT("ISO") )
         {
-            encoding = wxFONTENCODING_UTF16;
-        }
-        else if ( cs == wxT("UTF-16BE") )
-        {
-            encoding = wxFONTENCODING_UTF16BE;
-        }
-        else if ( cs == wxT("UTF-16LE") )
-        {
-            encoding = wxFONTENCODING_UTF16LE;
-        }
-        else if ( cs == wxT("UTF-32") || cs == wxT("UCS-4") )
-        {
-            encoding = wxFONTENCODING_UTF32;
-        }
-        else if ( cs == wxT("UTF-32BE") || cs == wxT("UCS-4BE") )
-        {
-            encoding = wxFONTENCODING_UTF32BE;
-        }
-        else if ( cs == wxT("UTF-32LE") || cs == wxT("UCS-4LE") )
-        {
-            encoding = wxFONTENCODING_UTF32LE;
-        }
-        else if ( cs == wxT("GB2312") )
-        {
-            encoding = wxFONTENCODING_GB2312;
-        }
-        else if ( cs == wxT("BIG5") )
-        {
-            encoding = wxFONTENCODING_BIG5;
-        }
-        else if ( cs == wxT("SJIS") ||
-                  cs == wxT("SHIFT_JIS") ||
-                  cs == wxT("SHIFT-JIS") )
-        {
-            encoding = wxFONTENCODING_SHIFT_JIS;
-        }
-        else if ( cs == wxT("EUC-JP") ||
-                  cs == wxT("EUC_JP") )
-        {
-            encoding = wxFONTENCODING_EUC_JP;
-        }
-        else if ( cs == wxT("EUC-KR") ||
-                  cs == wxT("EUC_KR") )
-        {
-            encoding = wxFONTENCODING_CP949;
-        }
-        else if ( cs == wxT("KOI8-R") ||
-                  cs == wxT("KOI8-RU") )
-        {
-            // although koi8-ru is not strictly speaking the same as koi8-r,
-            // they are similar enough to make mapping it to koi8 better than
-            // not recognizing it at all
-            encoding = wxFONTENCODING_KOI8;
-        }
-        else if ( cs == wxT("KOI8-U") )
-        {
-            encoding = wxFONTENCODING_KOI8_U;
-        }
-        else if ( cs.Left(3) == wxT("ISO") )
-        {
-            // the dash is optional (or, to be exact, it is not, but
-            // several brokenmails "forget" it)
+            // the dash is optional (or, to be exact, it is not, but many
+            // broken programs "forget" it in the output they generate)
             const wxChar *p = cs.c_str() + 3;
             if ( *p == wxT('-') )
                 p++;
 
-            // printf( "iso %s\n", (const char*) cs.ToAscii() );
-
             unsigned int value;
             if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
             {
-                // printf( "value %d\n", (int)value );
-
                 // make it 0 based and check that it is strictly positive in
                 // the process (no such thing as iso8859-0 encoding)
                 if ( (value-- > 0) &&
@@ -576,8 +545,6 @@ wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
             unsigned int value;
             if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
             {
-                // printf( "value %d\n", (int)value );
-
                 // make it 0 based and check that it is strictly positive in
                 // the process (no such thing as iso8859-0 encoding)
                 if ( (value-- > 0) &&
@@ -612,7 +579,7 @@ wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
                 if ( *p == wxT('-') )
                     p++;
 
-                int value;
+                unsigned int value;
                 if ( wxSscanf(p, wxT("%u"), &value) == 1 )
                 {
                     if ( value >= 1250 )
@@ -629,6 +596,10 @@ wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
 
                     switch ( value )
                     {
+                        case 866:
+                            encoding = wxFONTENCODING_CP866;
+                            break;
+
                         case 874:
                             encoding = wxFONTENCODING_CP874;
                             break;
@@ -711,7 +682,7 @@ wxString wxFontMapperBase::GetEncodingName(wxFontEncoding encoding)
     {
         if ( gs_encodings[i] == encoding )
         {
-            return gs_encodingNames[i];
+            return gs_encodingNames[i][0];
         }
     }
 
@@ -722,25 +693,52 @@ wxString wxFontMapperBase::GetEncodingName(wxFontEncoding encoding)
 }
 
 /* static */
-wxFontEncoding wxFontMapperBase::GetEncodingFromName(const wxString& name)
+const wxChar** wxFontMapperBase::GetAllEncodingNames(wxFontEncoding encoding)
 {
-    const size_t count = WXSIZEOF(gs_encodingNames);
+    static const wxChar* dummy[] = { NULL };
 
-    for ( size_t i = 0; i < count; i++ )
+    for ( size_t i = 0; i < WXSIZEOF(gs_encodingNames); i++ )
     {
-        if ( gs_encodingNames[i] == name )
+        if ( gs_encodings[i] == encoding )
         {
-            return gs_encodings[i];
+            return gs_encodingNames[i];
         }
     }
 
-    if ( name == _("default") )
+    return dummy;
+}
+
+/* static */
+wxFontEncoding wxFontMapperBase::GetEncodingFromName(const wxString& name)
+{
+    const size_t count = WXSIZEOF(gs_encodingNames);
+
+    // many charsets use hyphens in their names but some systems use the
+    // same names without hyphens (e.g. "UTF-8" and "UTF8" are both common)
+    // so to avoid bloating gs_encodingNames array too much recognize both
+    // versions with and without hyphens here
+    wxString nameNoHyphens(name);
+    if ( !nameNoHyphens.Replace(_T("-"), _T("")) )
     {
-        return wxFONTENCODING_DEFAULT;
+        // no replacement has been done, no need to compare twice
+        nameNoHyphens.clear();
+    }
+
+
+    for ( size_t i = 0; i < count; i++ )
+    {
+        for ( const wxChar** encName = gs_encodingNames[i]; *encName; ++encName )
+        {
+            if ( name.CmpNoCase(*encName) == 0 ||
+                    (!nameNoHyphens.empty() &&
+                     nameNoHyphens.CmpNoCase(*encName) == 0) )
+            {
+                return gs_encodings[i];
+            }
+        }
     }
 
     return wxFONTENCODING_MAX;
 }
 
 #endif // wxUSE_FONTMAP
-