src/common/fmapbase.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/fmapbase.cpp
   3 // Purpose:     wxFontMapperBase class implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     21.06.2003 (extracted from common/fontmap.cpp)
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999-2003 Vadim Zeitlin <vadim@wxwindows.org>
   9 // License:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // for compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_FONTMAP
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31     #include "wx/log.h"
  32     #include "wx/intl.h"
  33     #include "wx/module.h"
  34     #include "wx/wxcrtvararg.h"
  35 #endif //WX_PRECOMP
  36
  37 #if defined(__WXMSW__)
  38     #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
  39     #include  "wx/msw/winundef.h"
  40 #endif
  41
  42 #include "wx/fontmap.h"
  43 #include "wx/fmappriv.h"
  44
  45 #include "wx/apptrait.h"
  46
  47 // wxMemoryConfig uses wxFileConfig
  48 #if wxUSE_CONFIG && wxUSE_FILECONFIG
  49     #include "wx/config.h"
  50     #include "wx/memconf.h"
  51 #endif
  52
  53 // ----------------------------------------------------------------------------
  54 // constants
  55 // ----------------------------------------------------------------------------
  56
  57 // encodings supported by GetEncodingDescription
  58 static wxFontEncoding gs_encodings[] =
  59 {
  60     wxFONTENCODING_ISO8859_1,
  61     wxFONTENCODING_ISO8859_2,
  62     wxFONTENCODING_ISO8859_3,
  63     wxFONTENCODING_ISO8859_4,
  64     wxFONTENCODING_ISO8859_5,
  65     wxFONTENCODING_ISO8859_6,
  66     wxFONTENCODING_ISO8859_7,
  67     wxFONTENCODING_ISO8859_8,
  68     wxFONTENCODING_ISO8859_9,
  69     wxFONTENCODING_ISO8859_10,
  70     wxFONTENCODING_ISO8859_11,
  71     wxFONTENCODING_ISO8859_12,
  72     wxFONTENCODING_ISO8859_13,
  73     wxFONTENCODING_ISO8859_14,
  74     wxFONTENCODING_ISO8859_15,
  75     wxFONTENCODING_KOI8,
  76     wxFONTENCODING_KOI8_U,
  77     wxFONTENCODING_CP874,
  78     wxFONTENCODING_CP932,
  79     wxFONTENCODING_CP936,
  80     wxFONTENCODING_CP949,
  81     wxFONTENCODING_CP950,
  82     wxFONTENCODING_CP1250,
  83     wxFONTENCODING_CP1251,
  84     wxFONTENCODING_CP1252,
  85     wxFONTENCODING_CP1253,
  86     wxFONTENCODING_CP1254,
  87     wxFONTENCODING_CP1255,
  88     wxFONTENCODING_CP1256,
  89     wxFONTENCODING_CP1257,
  90     wxFONTENCODING_CP437,
  91     wxFONTENCODING_UTF7,
  92     wxFONTENCODING_UTF8,
  93     wxFONTENCODING_UTF16BE,
  94     wxFONTENCODING_UTF16LE,
  95     wxFONTENCODING_UTF32BE,
  96     wxFONTENCODING_UTF32LE,
  97     wxFONTENCODING_EUC_JP,
  98     wxFONTENCODING_DEFAULT,
  99     wxFONTENCODING_BIG5,
 100     wxFONTENCODING_SHIFT_JIS,
 101     wxFONTENCODING_GB2312,
 102     wxFONTENCODING_ISO2022_JP,
 103 };
 104
 105 // the descriptions for them
 106 static const char* gs_encodingDescs[] =
 107 {
 108     wxTRANSLATE( "Western European (ISO-8859-1)" ),
 109     wxTRANSLATE( "Central European (ISO-8859-2)" ),
 110     wxTRANSLATE( "Esperanto (ISO-8859-3)" ),
 111     wxTRANSLATE( "Baltic (old) (ISO-8859-4)" ),
 112     wxTRANSLATE( "Cyrillic (ISO-8859-5)" ),
 113     wxTRANSLATE( "Arabic (ISO-8859-6)" ),
 114     wxTRANSLATE( "Greek (ISO-8859-7)" ),
 115     wxTRANSLATE( "Hebrew (ISO-8859-8)" ),
 116     wxTRANSLATE( "Turkish (ISO-8859-9)" ),
 117     wxTRANSLATE( "Nordic (ISO-8859-10)" ),
 118     wxTRANSLATE( "Thai (ISO-8859-11)" ),
 119     wxTRANSLATE( "Indian (ISO-8859-12)" ),
 120     wxTRANSLATE( "Baltic (ISO-8859-13)" ),
 121     wxTRANSLATE( "Celtic (ISO-8859-14)" ),
 122     wxTRANSLATE( "Western European with Euro (ISO-8859-15)" ),
 123     wxTRANSLATE( "KOI8-R" ),
 124     wxTRANSLATE( "KOI8-U" ),
 125     wxTRANSLATE( "Windows Thai (CP 874)" ),
 126     wxTRANSLATE( "Windows Japanese (CP 932)" ),
 127     wxTRANSLATE( "Windows Chinese Simplified (CP 936)" ),
 128     wxTRANSLATE( "Windows Korean (CP 949)" ),
 129     wxTRANSLATE( "Windows Chinese Traditional (CP 950)" ),
 130     wxTRANSLATE( "Windows Central European (CP 1250)" ),
 131     wxTRANSLATE( "Windows Cyrillic (CP 1251)" ),
 132     wxTRANSLATE( "Windows Western European (CP 1252)" ),
 133     wxTRANSLATE( "Windows Greek (CP 1253)" ),
 134     wxTRANSLATE( "Windows Turkish (CP 1254)" ),
 135     wxTRANSLATE( "Windows Hebrew (CP 1255)" ),
 136     wxTRANSLATE( "Windows Arabic (CP 1256)" ),
 137     wxTRANSLATE( "Windows Baltic (CP 1257)" ),
 138     wxTRANSLATE( "Windows/DOS OEM (CP 437)" ),
 139     wxTRANSLATE( "Unicode 7 bit (UTF-7)" ),
 140     wxTRANSLATE( "Unicode 8 bit (UTF-8)" ),
 141 #ifdef WORDS_BIGENDIAN
 142     wxTRANSLATE( "Unicode 16 bit (UTF-16)" ),
 143     wxTRANSLATE( "Unicode 16 bit Little Endian (UTF-16LE)" ),
 144     wxTRANSLATE( "Unicode 32 bit (UTF-32)" ),
 145     wxTRANSLATE( "Unicode 32 bit Little Endian (UTF-32LE)" ),
 146 #else // WORDS_BIGENDIAN
 147     wxTRANSLATE( "Unicode 16 bit Big Endian (UTF-16BE)" ),
 148     wxTRANSLATE( "Unicode 16 bit (UTF-16)" ),
 149     wxTRANSLATE( "Unicode 32 bit Big Endian (UTF-32BE)" ),
 150     wxTRANSLATE( "Unicode 32 bit (UTF-32)" ),
 151 #endif // WORDS_BIGENDIAN
 152     wxTRANSLATE( "Extended Unix Codepage for Japanese (EUC-JP)" ),
 153     wxTRANSLATE( "US-ASCII" ),
 154     wxTRANSLATE( "BIG5" ),
 155     wxTRANSLATE( "SHIFT-JIS" ),
 156     wxTRANSLATE( "GB-2312" ),
 157     wxTRANSLATE( "ISO-2022-JP" ),
 158 };
 159
 160 // and the internal names (these are not translated on purpose!)
 161 static const wxChar* gs_encodingNames[WXSIZEOF(gs_encodingDescs)][9] =
 162 {
 163     // names from the columns correspond to these OS:
 164     //      Linux        Solaris and IRIX       HP-UX             AIX
 165     { _T("ISO-8859-1"),  _T("ISO8859-1"),  _T("iso88591"),  _T("8859-1"), wxT("iso_8859_1"), NULL },
 166     { _T("ISO-8859-2"),  _T("ISO8859-2"),  _T("iso88592"),  _T("8859-2"), NULL },
 167     { _T("ISO-8859-3"),  _T("ISO8859-3"),  _T("iso88593"),  _T("8859-3"), NULL },
 168     { _T("ISO-8859-4"),  _T("ISO8859-4"),  _T("iso88594"),  _T("8859-4"), NULL },
 169     { _T("ISO-8859-5"),  _T("ISO8859-5"),  _T("iso88595"),  _T("8859-5"), NULL },
 170     { _T("ISO-8859-6"),  _T("ISO8859-6"),  _T("iso88596"),  _T("8859-6"), NULL },
 171     { _T("ISO-8859-7"),  _T("ISO8859-7"),  _T("iso88597"),  _T("8859-7"), NULL },
 172     { _T("ISO-8859-8"),  _T("ISO8859-8"),  _T("iso88598"),  _T("8859-8"), NULL },
 173     { _T("ISO-8859-9"),  _T("ISO8859-9"),  _T("iso88599"),  _T("8859-9"), NULL },
 174     { _T("ISO-8859-10"), _T("ISO8859-10"), _T("iso885910"), _T("8859-10"), NULL },
 175     { _T("ISO-8859-11"), _T("ISO8859-11"), _T("iso885911"), _T("8859-11"), NULL },
 176     { _T("ISO-8859-12"), _T("ISO8859-12"), _T("iso885912"), _T("8859-12"), NULL },
 177     { _T("ISO-8859-13"), _T("ISO8859-13"), _T("iso885913"), _T("8859-13"), NULL },
 178     { _T("ISO-8859-14"), _T("ISO8859-14"), _T("iso885914"), _T("8859-14"), NULL },
 179     { _T("ISO-8859-15"), _T("ISO8859-15"), _T("iso885915"), _T("8859-15"), NULL },
 180
 181     // although koi8-ru is not strictly speaking the same as koi8-r,
 182     // they are similar enough to make mapping it to koi8 better than
 183     // not recognizing it at all
 184     { wxT( "KOI8-R" ), wxT( "KOI8-RU" ), NULL },
 185     { wxT( "KOI8-U" ), NULL },
 186
 187     { wxT( "WINDOWS-874" ), wxT( "CP-874" ), wxT( "MS-874" ), wxT( "IBM-874" ), NULL },
 188     { wxT( "WINDOWS-932" ), wxT( "CP-932" ), wxT( "MS-932" ), wxT( "IBM-932" ), NULL },
 189     { wxT( "WINDOWS-936" ), wxT( "CP-936" ), wxT( "MS-936" ), wxT( "IBM-936" ), NULL },
 190     { wxT( "WINDOWS-949" ), wxT( "CP-949" ), wxT( "MS-949" ), wxT( "IBM-949" ), wxT( "EUC-KR" ), wxT( "eucKR" ), wxT( "euc_kr" ), NULL },
 191     { wxT( "WINDOWS-950" ), wxT( "CP-950" ), wxT( "MS-950" ), wxT( "IBM-950" ), NULL },
 192     { wxT( "WINDOWS-1250" ),wxT( "CP-1250" ),wxT( "MS-1250" ),wxT( "IBM-1250" ),NULL },
 193     { wxT( "WINDOWS-1251" ),wxT( "CP-1251" ),wxT( "MS-1251" ),wxT( "IBM-1251" ),NULL },
 194     { wxT( "WINDOWS-1252" ),wxT( "CP-1252" ),wxT( "MS-1252" ),wxT( "IBM-1252" ),NULL },
 195     { wxT( "WINDOWS-1253" ),wxT( "CP-1253" ),wxT( "MS-1253" ),wxT( "IBM-1253" ),NULL },
 196     { wxT( "WINDOWS-1254" ),wxT( "CP-1254" ),wxT( "MS-1254" ),wxT( "IBM-1254" ),NULL },
 197     { wxT( "WINDOWS-1255" ),wxT( "CP-1255" ),wxT( "MS-1255" ),wxT( "IBM-1255" ),NULL },
 198     { wxT( "WINDOWS-1256" ),wxT( "CP-1256" ),wxT( "MS-1256" ),wxT( "IBM-1256" ),NULL },
 199     { wxT( "WINDOWS-1257" ),wxT( "CP-1257" ),wxT( "MS-1257" ),wxT( "IBM-1257" ),NULL },
 200     { wxT( "WINDOWS-437" ), wxT( "CP-437" ), wxT( "MS-437" ), wxT( "IBM-437" ), NULL },
 201
 202     { wxT( "UTF-7" ), wxT("UTF7"), NULL },
 203     { wxT( "UTF-8" ), wxT("UTF8"), NULL },
 204 #ifdef WORDS_BIGENDIAN
 205     { wxT( "UTF-16BE" ), wxT("UTF16BE"), wxT("UCS-2BE"), wxT("UCS2BE"), wxT("UTF-16"), wxT("UTF16"), wxT("UCS-2"), wxT("UCS2"), NULL },
 206     { wxT( "UTF-16LE" ), wxT("UTF16LE"), wxT("UCS-2LE"), wxT("UCS2LE"), NULL },
 207     { wxT( "UTF-32BE" ), wxT("UTF32BE"), wxT("UCS-4BE" ), wxT("UTF-32"), wxT("UTF32"), wxT("UCS-4"), wxT("UCS4"), NULL },
 208     { wxT( "UTF-32LE" ), wxT("UTF32LE"), wxT("UCS-4LE"), wxT("UCS4LE"), NULL },
 209 #else // WORDS_BIGENDIAN
 210     { wxT("UTF-16BE"), wxT("UTF16BE"), wxT("UCS-2BE"), wxT("UCS2BE"), NULL },
 211     { wxT("UTF-16LE"), wxT("UTF16LE"), wxT("UCS-2LE"), wxT("UTF-16"), wxT("UTF16"), wxT("UCS-2"), wxT("UCS2"), NULL },
 212     { wxT("UTF-32BE"), wxT("UTF32BE"), wxT("UCS-4BE"), wxT("UCS4BE"), NULL },
 213     { wxT("UTF-32LE"), wxT("UTF32LE"), wxT("UCS-4LE"), wxT("UCS4LE"), wxT("UTF-32"), wxT("UTF32"), wxT("UCS-4"), wxT("UCS4"), NULL },
 214 #endif // WORDS_BIGENDIAN
 215
 216     { wxT( "EUC-JP" ), wxT( "eucJP" ), wxT( "euc_jp" ), wxT( "IBM-eucJP" ), NULL },
 217
 218     // 646 is for Solaris, roman8 -- for HP-UX
 219     { wxT( "US-ASCII" ), wxT( "ASCII" ), wxT("C"), wxT("POSIX"), wxT("ANSI_X3.4-1968"),
 220       wxT("646"), wxT("roman8"), wxT( "" ), NULL },
 221
 222     { wxT( "BIG5" ), wxT("big5"), NULL },
 223     { wxT( "SJIS" ), wxT( "SHIFT-JIS" ), wxT( "SHIFT_JIS" ), NULL },
 224     { wxT( "GB2312" ), NULL },
 225     { wxT( "ISO-2022-JP" ), NULL },
 226 };
 227
 228 wxCOMPILE_TIME_ASSERT( WXSIZEOF(gs_encodingDescs) == WXSIZEOF(gs_encodings), EncodingsArraysNotInSync );
 229 wxCOMPILE_TIME_ASSERT( WXSIZEOF(gs_encodingNames) == WXSIZEOF(gs_encodings), EncodingsArraysNotInSync );
 230
 231 // ----------------------------------------------------------------------------
 232 // private classes
 233 // ----------------------------------------------------------------------------
 234
 235 // clean up the font mapper object
 236 class wxFontMapperModule : public wxModule
 237 {
 238 public:
 239     wxFontMapperModule() : wxModule() { }
 240
 241     virtual bool OnInit()
 242     {
 243         // a dummy wxFontMapperBase object could have been created during the
 244         // program startup before wxApp was created, we have to delete it to
 245         // allow creating the real font mapper next time it is needed now that
 246         // we can create it (when the modules are initialized, wxApp object
 247         // already exists)
 248         wxFontMapperBase *fm = wxFontMapperBase::Get();
 249         if ( fm && fm->IsDummy() )
 250             wxFontMapperBase::Reset();
 251
 252         return true;
 253     }
 254
 255     virtual void OnExit()
 256     {
 257         wxFontMapperBase::Reset();
 258     }
 259
 260     DECLARE_DYNAMIC_CLASS(wxFontMapperModule)
 261 };
 262
 263 IMPLEMENT_DYNAMIC_CLASS(wxFontMapperModule, wxModule)
 264
 265
 266 // ============================================================================
 267 // wxFontMapperBase implementation
 268 // ============================================================================
 269
 270 wxFontMapper *wxFontMapperBase::sm_instance = NULL;
 271
 272 // ----------------------------------------------------------------------------
 273 // ctor and dtor
 274 // ----------------------------------------------------------------------------
 275
 276 wxFontMapperBase::wxFontMapperBase()
 277 {
 278 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 279     m_configDummy = NULL;
 280 #endif // wxUSE_CONFIG
 281 }
 282
 283 wxFontMapperBase::~wxFontMapperBase()
 284 {
 285 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 286     if ( m_configDummy )
 287         delete m_configDummy;
 288 #endif // wxUSE_CONFIG
 289 }
 290
 291 /* static */
 292 wxFontMapperBase *wxFontMapperBase::Get()
 293 {
 294     if ( !sm_instance )
 295     {
 296         wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 297         if ( traits )
 298         {
 299             sm_instance = traits->CreateFontMapper();
 300
 301             wxASSERT_MSG( sm_instance,
 302                             _T("wxAppTraits::CreateFontMapper() failed") );
 303         }
 304
 305         if ( !sm_instance )
 306         {
 307             // last resort: we must create something because the existing code
 308             // relies on always having a valid font mapper object
 309             sm_instance = (wxFontMapper *)new wxFontMapperBase;
 310         }
 311     }
 312
 313     return (wxFontMapperBase*)sm_instance;
 314 }
 315
 316 /* static */
 317 wxFontMapper *wxFontMapperBase::Set(wxFontMapper *mapper)
 318 {
 319     wxFontMapper *old = sm_instance;
 320     sm_instance = mapper;
 321     return old;
 322 }
 323
 324 /* static */
 325 void wxFontMapperBase::Reset()
 326 {
 327     if ( sm_instance )
 328     {
 329         // we need a cast as wxFontMapper is not fully declared here and so the
 330         // compiler can't know that it derives from wxFontMapperBase (but
 331         // run-time behaviour will be correct because the dtor is virtual)
 332         delete (wxFontMapperBase *)sm_instance;
 333         sm_instance = NULL;
 334     }
 335 }
 336
 337 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 338
 339 // ----------------------------------------------------------------------------
 340 // config usage customisation
 341 // ----------------------------------------------------------------------------
 342
 343
 344 static wxString gs_defaultConfigPath(FONTMAPPER_ROOT_PATH);
 345
 346 /* static */
 347 const wxString& wxFontMapperBase::GetDefaultConfigPath()
 348 {
 349     // NB: we return const wxString& and not wxString for compatibility
 350     //     with 2.8 that returned const wxChar*
 351     return gs_defaultConfigPath;
 352 }
 353
 354 void wxFontMapperBase::SetConfigPath(const wxString& prefix)
 355 {
 356     wxCHECK_RET( !prefix.empty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
 357                  wxT("an absolute path should be given to wxFontMapper::SetConfigPath()") );
 358
 359     m_configRootPath = prefix;
 360 }
 361
 362 // ----------------------------------------------------------------------------
 363 // get config object and path for it
 364 // ----------------------------------------------------------------------------
 365
 366 wxConfigBase *wxFontMapperBase::GetConfig()
 367 {
 368     wxConfigBase *config = wxConfig::Get(false);
 369
 370     // If there is no global configuration, use an internal memory configuration
 371     if ( !config )
 372     {
 373         if ( !m_configDummy )
 374             m_configDummy = new wxMemoryConfig;
 375         config = m_configDummy;
 376
 377         // FIXME: ideally, we should add keys from dummy config to a real one later,
 378         //        but it is a low-priority task because typical wxWin application
 379         //        either doesn't use wxConfig at all or creates wxConfig object in
 380         //        wxApp::OnInit(), before any real interaction with the user takes
 381         //        place...
 382     }
 383
 384     return config;
 385 }
 386
 387 const wxString& wxFontMapperBase::GetConfigPath()
 388 {
 389     if ( !m_configRootPath )
 390     {
 391         // use the default
 392         m_configRootPath = GetDefaultConfigPath();
 393     }
 394
 395     return m_configRootPath;
 396 }
 397
 398 // ----------------------------------------------------------------------------
 399 // config helpers
 400 // ----------------------------------------------------------------------------
 401
 402 bool wxFontMapperBase::ChangePath(const wxString& pathNew, wxString *pathOld)
 403 {
 404     wxConfigBase *config = GetConfig();
 405     if ( !config )
 406         return false;
 407
 408     *pathOld = config->GetPath();
 409
 410     wxString path = GetConfigPath();
 411     if ( path.empty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
 412     {
 413         path += wxCONFIG_PATH_SEPARATOR;
 414     }
 415
 416     wxASSERT_MSG( !pathNew || (pathNew[0] != wxCONFIG_PATH_SEPARATOR),
 417                   wxT("should be a relative path") );
 418
 419     path += pathNew;
 420
 421     config->SetPath(path);
 422
 423     return true;
 424 }
 425
 426 void wxFontMapperBase::RestorePath(const wxString& pathOld)
 427 {
 428     GetConfig()->SetPath(pathOld);
 429 }
 430
 431 #endif
 432
 433 // ----------------------------------------------------------------------------
 434 // charset/encoding correspondence
 435 // ----------------------------------------------------------------------------
 436
 437 wxFontEncoding
 438 wxFontMapperBase::CharsetToEncoding(const wxString& charset,
 439                                     bool WXUNUSED(interactive))
 440 {
 441     int enc = NonInteractiveCharsetToEncoding(charset);
 442     if ( enc == wxFONTENCODING_UNKNOWN )
 443     {
 444         // we should return wxFONTENCODING_SYSTEM from here for unknown
 445         // encodings
 446         enc = wxFONTENCODING_SYSTEM;
 447     }
 448
 449     return (wxFontEncoding)enc;
 450 }
 451
 452 int
 453 wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
 454 {
 455     wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 456
 457     // we're going to modify it, make a copy
 458     wxString cs = charset;
 459
 460 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 461     // first try the user-defined settings
 462     wxFontMapperPathChanger path(this, FONTMAPPER_CHARSET_PATH);
 463     if ( path.IsOk() )
 464     {
 465         wxConfigBase *config = GetConfig();
 466
 467         // do we have an encoding for this charset?
 468         long value = config->Read(charset, -1l);
 469         if ( value != -1 )
 470         {
 471             if ( value == wxFONTENCODING_UNKNOWN )
 472             {
 473                 // don't try to find it, in particular don't ask the user
 474                 return value;
 475             }
 476
 477             if ( value >= 0 && value <= wxFONTENCODING_MAX )
 478             {
 479                 encoding = (wxFontEncoding)value;
 480             }
 481             else
 482             {
 483                 wxLogDebug(wxT("corrupted config data: invalid encoding %ld for charset '%s' ignored"),
 484                            value, charset.c_str());
 485             }
 486         }
 487
 488         if ( encoding == wxFONTENCODING_SYSTEM )
 489         {
 490             // may be we have an alias?
 491             config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
 492
 493             wxString alias = config->Read(charset);
 494             if ( !alias.empty() )
 495             {
 496                 // yes, we do - use it instead
 497                 cs = alias;
 498             }
 499         }
 500     }
 501 #endif // wxUSE_CONFIG
 502
 503     // if didn't find it there, try to recognize it ourselves
 504     if ( encoding == wxFONTENCODING_SYSTEM )
 505     {
 506         // trim any spaces
 507         cs.Trim(true);
 508         cs.Trim(false);
 509
 510         // discard the optional quotes
 511         if ( !cs.empty() )
 512         {
 513             if ( cs[0u] == _T('"') && cs.Last() == _T('"') )
 514             {
 515                 cs = wxString(cs.c_str(), cs.length() - 1);
 516             }
 517         }
 518
 519         for ( size_t i = 0; i < WXSIZEOF(gs_encodingNames); ++i )
 520         {
 521             for ( const wxChar** encName = gs_encodingNames[i]; *encName; ++encName )
 522             {
 523                 if ( cs.CmpNoCase(*encName) == 0 )
 524                     return gs_encodings[i];
 525             }
 526         }
 527
 528         cs.MakeUpper();
 529
 530         if ( cs.Left(3) == wxT("ISO") )
 531         {
 532             // the dash is optional (or, to be exact, it is not, but
 533             // several broken programs "forget" it)
 534             const wxChar *p = cs.c_str() + 3;
 535             if ( *p == wxT('-') )
 536                 p++;
 537
 538             unsigned int value;
 539             if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
 540             {
 541                 // make it 0 based and check that it is strictly positive in
 542                 // the process (no such thing as iso8859-0 encoding)
 543                 if ( (value-- > 0) &&
 544                      (value < wxFONTENCODING_ISO8859_MAX -
 545                               wxFONTENCODING_ISO8859_1) )
 546                 {
 547                     // it's a valid ISO8859 encoding
 548                     value += wxFONTENCODING_ISO8859_1;
 549                     encoding = (wxFontEncoding)value;
 550                 }
 551             }
 552         }
 553         else if ( cs.Left(4) == wxT("8859") )
 554         {
 555             const wxChar *p = cs.c_str();
 556
 557             unsigned int value;
 558             if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
 559             {
 560                 // make it 0 based and check that it is strictly positive in
 561                 // the process (no such thing as iso8859-0 encoding)
 562                 if ( (value-- > 0) &&
 563                      (value < wxFONTENCODING_ISO8859_MAX -
 564                               wxFONTENCODING_ISO8859_1) )
 565                 {
 566                     // it's a valid ISO8859 encoding
 567                     value += wxFONTENCODING_ISO8859_1;
 568                     encoding = (wxFontEncoding)value;
 569                 }
 570             }
 571         }
 572         else // check for Windows charsets
 573         {
 574             size_t len;
 575             if ( cs.Left(7) == wxT("WINDOWS") )
 576             {
 577                 len = 7;
 578             }
 579             else if ( cs.Left(2) == wxT("CP") )
 580             {
 581                 len = 2;
 582             }
 583             else // not a Windows encoding
 584             {
 585                 len = 0;
 586             }
 587
 588             if ( len )
 589             {
 590                 const wxChar *p = cs.c_str() + len;
 591                 if ( *p == wxT('-') )
 592                     p++;
 593
 594                 unsigned int value;
 595                 if ( wxSscanf(p, wxT("%u"), &value) == 1 )
 596                 {
 597                     if ( value >= 1250 )
 598                     {
 599                         value -= 1250;
 600                         if ( value < wxFONTENCODING_CP12_MAX -
 601                                      wxFONTENCODING_CP1250 )
 602                         {
 603                             // a valid Windows code page
 604                             value += wxFONTENCODING_CP1250;
 605                             encoding = (wxFontEncoding)value;
 606                         }
 607                     }
 608
 609                     switch ( value )
 610                     {
 611                         case 866:
 612                             encoding = wxFONTENCODING_CP866;
 613                             break;
 614
 615                         case 874:
 616                             encoding = wxFONTENCODING_CP874;
 617                             break;
 618
 619                         case 932:
 620                             encoding = wxFONTENCODING_CP932;
 621                             break;
 622
 623                         case 936:
 624                             encoding = wxFONTENCODING_CP936;
 625                             break;
 626
 627                         case 949:
 628                             encoding = wxFONTENCODING_CP949;
 629                             break;
 630
 631                         case 950:
 632                             encoding = wxFONTENCODING_CP950;
 633                             break;
 634                     }
 635                 }
 636             }
 637         }
 638         //else: unknown
 639     }
 640
 641     return encoding;
 642 }
 643
 644 /* static */
 645 size_t wxFontMapperBase::GetSupportedEncodingsCount()
 646 {
 647     return WXSIZEOF(gs_encodings);
 648 }
 649
 650 /* static */
 651 wxFontEncoding wxFontMapperBase::GetEncoding(size_t n)
 652 {
 653     wxCHECK_MSG( n < WXSIZEOF(gs_encodings), wxFONTENCODING_SYSTEM,
 654                     _T("wxFontMapper::GetEncoding(): invalid index") );
 655
 656     return gs_encodings[n];
 657 }
 658
 659 /* static */
 660 wxString wxFontMapperBase::GetEncodingDescription(wxFontEncoding encoding)
 661 {
 662     if ( encoding == wxFONTENCODING_DEFAULT )
 663     {
 664         return _("Default encoding");
 665     }
 666
 667     const size_t count = WXSIZEOF(gs_encodingDescs);
 668
 669     for ( size_t i = 0; i < count; i++ )
 670     {
 671         if ( gs_encodings[i] == encoding )
 672         {
 673             return wxGetTranslation(gs_encodingDescs[i]);
 674         }
 675     }
 676
 677     wxString str;
 678     str.Printf(_("Unknown encoding (%d)"), encoding);
 679
 680     return str;
 681 }
 682
 683 /* static */
 684 wxString wxFontMapperBase::GetEncodingName(wxFontEncoding encoding)
 685 {
 686     if ( encoding == wxFONTENCODING_DEFAULT )
 687     {
 688         return _("default");
 689     }
 690
 691     const size_t count = WXSIZEOF(gs_encodingNames);
 692
 693     for ( size_t i = 0; i < count; i++ )
 694     {
 695         if ( gs_encodings[i] == encoding )
 696         {
 697             return gs_encodingNames[i][0];
 698         }
 699     }
 700
 701     wxString str;
 702     str.Printf(_("unknown-%d"), encoding);
 703
 704     return str;
 705 }
 706
 707 /* static */
 708 const wxChar** wxFontMapperBase::GetAllEncodingNames(wxFontEncoding encoding)
 709 {
 710     static const wxChar* dummy[] = { NULL };
 711
 712     for ( size_t i = 0; i < WXSIZEOF(gs_encodingNames); i++ )
 713     {
 714         if ( gs_encodings[i] == encoding )
 715         {
 716             return gs_encodingNames[i];
 717         }
 718     }
 719
 720     return dummy;
 721 }
 722
 723 /* static */
 724 wxFontEncoding wxFontMapperBase::GetEncodingFromName(const wxString& name)
 725 {
 726     const size_t count = WXSIZEOF(gs_encodingNames);
 727
 728     for ( size_t i = 0; i < count; i++ )
 729     {
 730         for ( const wxChar** encName = gs_encodingNames[i]; *encName; ++encName )
 731         {
 732             if ( name.CmpNoCase(*encName) == 0 )
 733                 return gs_encodings[i];
 734         }
 735     }
 736
 737     return wxFONTENCODING_MAX;
 738 }
 739
 740 #endif // wxUSE_FONTMAP