src/common/fmapbase.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #endif //WX_PRECOMP
  34
  35 #if defined(__WXMSW__)
  36   #include  "wx/msw/private.h"  // includes windows.h for LOGFONT
  37   #include  "wx/msw/winundef.h"
  38 #endif
  39
  40 #include "wx/fontmap.h"
  41 #include "wx/fmappriv.h"
  42
  43 #include "wx/apptrait.h"
  44 #include "wx/module.h"
  45
  46 // wxMemoryConfig uses wxFileConfig
  47 #if wxUSE_CONFIG && wxUSE_FILECONFIG
  48     #include "wx/config.h"
  49     #include "wx/memconf.h"
  50 #endif
  51
  52 // ----------------------------------------------------------------------------
  53 // constants
  54 // ----------------------------------------------------------------------------
  55
  56 // encodings supported by GetEncodingDescription
  57 static wxFontEncoding gs_encodings[] =
  58 {
  59     wxFONTENCODING_ISO8859_1,
  60     wxFONTENCODING_ISO8859_2,
  61     wxFONTENCODING_ISO8859_3,
  62     wxFONTENCODING_ISO8859_4,
  63     wxFONTENCODING_ISO8859_5,
  64     wxFONTENCODING_ISO8859_6,
  65     wxFONTENCODING_ISO8859_7,
  66     wxFONTENCODING_ISO8859_8,
  67     wxFONTENCODING_ISO8859_9,
  68     wxFONTENCODING_ISO8859_10,
  69     wxFONTENCODING_ISO8859_11,
  70     wxFONTENCODING_ISO8859_12,
  71     wxFONTENCODING_ISO8859_13,
  72     wxFONTENCODING_ISO8859_14,
  73     wxFONTENCODING_ISO8859_15,
  74     wxFONTENCODING_KOI8,
  75     wxFONTENCODING_KOI8_U,
  76     wxFONTENCODING_CP874,
  77     wxFONTENCODING_CP932,
  78     wxFONTENCODING_CP936,
  79     wxFONTENCODING_CP949,
  80     wxFONTENCODING_CP950,
  81     wxFONTENCODING_CP1250,
  82     wxFONTENCODING_CP1251,
  83     wxFONTENCODING_CP1252,
  84     wxFONTENCODING_CP1253,
  85     wxFONTENCODING_CP1254,
  86     wxFONTENCODING_CP1255,
  87     wxFONTENCODING_CP1256,
  88     wxFONTENCODING_CP1257,
  89     wxFONTENCODING_CP437,
  90     wxFONTENCODING_UTF7,
  91     wxFONTENCODING_UTF8,
  92     wxFONTENCODING_UTF16BE,
  93     wxFONTENCODING_UTF16LE,
  94     wxFONTENCODING_UTF32BE,
  95     wxFONTENCODING_UTF32LE,
  96     wxFONTENCODING_EUC_JP,
  97     wxFONTENCODING_DEFAULT,
  98     wxFONTENCODING_BIG5,
  99     wxFONTENCODING_SHIFT_JIS,
 100     wxFONTENCODING_GB2312,
 101 };
 102
 103 // the descriptions for them
 104 static const wxChar* gs_encodingDescs[] =
 105 {
 106     wxTRANSLATE( "Western European (ISO-8859-1)" ),
 107     wxTRANSLATE( "Central European (ISO-8859-2)" ),
 108     wxTRANSLATE( "Esperanto (ISO-8859-3)" ),
 109     wxTRANSLATE( "Baltic (old) (ISO-8859-4)" ),
 110     wxTRANSLATE( "Cyrillic (ISO-8859-5)" ),
 111     wxTRANSLATE( "Arabic (ISO-8859-6)" ),
 112     wxTRANSLATE( "Greek (ISO-8859-7)" ),
 113     wxTRANSLATE( "Hebrew (ISO-8859-8)" ),
 114     wxTRANSLATE( "Turkish (ISO-8859-9)" ),
 115     wxTRANSLATE( "Nordic (ISO-8859-10)" ),
 116     wxTRANSLATE( "Thai (ISO-8859-11)" ),
 117     wxTRANSLATE( "Indian (ISO-8859-12)" ),
 118     wxTRANSLATE( "Baltic (ISO-8859-13)" ),
 119     wxTRANSLATE( "Celtic (ISO-8859-14)" ),
 120     wxTRANSLATE( "Western European with Euro (ISO-8859-15)" ),
 121     wxTRANSLATE( "KOI8-R" ),
 122     wxTRANSLATE( "KOI8-U" ),
 123     wxTRANSLATE( "Windows Thai (CP 874)" ),
 124     wxTRANSLATE( "Windows Japanese (CP 932)" ),
 125     wxTRANSLATE( "Windows Chinese Simplified (CP 936)" ),
 126     wxTRANSLATE( "Windows Korean (CP 949)" ),
 127     wxTRANSLATE( "Windows Chinese Traditional (CP 950)" ),
 128     wxTRANSLATE( "Windows Central European (CP 1250)" ),
 129     wxTRANSLATE( "Windows Cyrillic (CP 1251)" ),
 130     wxTRANSLATE( "Windows Western European (CP 1252)" ),
 131     wxTRANSLATE( "Windows Greek (CP 1253)" ),
 132     wxTRANSLATE( "Windows Turkish (CP 1254)" ),
 133     wxTRANSLATE( "Windows Hebrew (CP 1255)" ),
 134     wxTRANSLATE( "Windows Arabic (CP 1256)" ),
 135     wxTRANSLATE( "Windows Baltic (CP 1257)" ),
 136     wxTRANSLATE( "Windows/DOS OEM (CP 437)" ),
 137     wxTRANSLATE( "Unicode 7 bit (UTF-7)" ),
 138     wxTRANSLATE( "Unicode 8 bit (UTF-8)" ),
 139 #ifdef WORDS_BIGENDIAN
 140     wxTRANSLATE( "Unicode 16 bit (UTF-16)" ),
 141     wxTRANSLATE( "Unicode 16 bit Little Endian (UTF-16LE)" ),
 142     wxTRANSLATE( "Unicode 32 bit (UTF-32)" ),
 143     wxTRANSLATE( "Unicode 32 bit Little Endian (UTF-32LE)" ),
 144 #else // WORDS_BIGENDIAN
 145     wxTRANSLATE( "Unicode 16 bit Big Endian (UTF-16BE)" ),
 146     wxTRANSLATE( "Unicode 16 bit (UTF-16)" ),
 147     wxTRANSLATE( "Unicode 32 bit Big Endian (UTF-32BE)" ),
 148     wxTRANSLATE( "Unicode 32 bit (UTF-32)" ),
 149 #endif // WORDS_BIGENDIAN
 150     wxTRANSLATE( "Extended Unix Codepage for Japanese (EUC-JP)" ),
 151     wxTRANSLATE( "US-ASCII" ),
 152     wxTRANSLATE( "BIG5" ),
 153     wxTRANSLATE( "SHIFT-JIS" ),
 154     wxTRANSLATE( "GB-2312" ),
 155 };
 156
 157 // and the internal names (these are not translated on purpose!)
 158 static const wxChar* gs_encodingNames[WXSIZEOF(gs_encodingDescs)][10] =
 159 {
 160     // names from the columns correspond to these OS:
 161     //      Linux        Solaris and IRIX       HP-UX             AIX
 162     { _T("ISO-8859-1"),  _T("ISO8859-1"),  _T("iso88591"),  _T("8859-1"), wxT("iso_8859_1"), NULL },
 163     { _T("ISO-8859-2"),  _T("ISO8859-2"),  _T("iso88592"),  _T("8859-2"), NULL },
 164     { _T("ISO-8859-3"),  _T("ISO8859-3"),  _T("iso88593"),  _T("8859-3"), NULL },
 165     { _T("ISO-8859-4"),  _T("ISO8859-4"),  _T("iso88594"),  _T("8859-4"), NULL },
 166     { _T("ISO-8859-5"),  _T("ISO8859-5"),  _T("iso88595"),  _T("8859-5"), NULL },
 167     { _T("ISO-8859-6"),  _T("ISO8859-6"),  _T("iso88596"),  _T("8859-6"), NULL },
 168     { _T("ISO-8859-7"),  _T("ISO8859-7"),  _T("iso88597"),  _T("8859-7"), NULL },
 169     { _T("ISO-8859-8"),  _T("ISO8859-8"),  _T("iso88598"),  _T("8859-8"), NULL },
 170     { _T("ISO-8859-9"),  _T("ISO8859-9"),  _T("iso88599"),  _T("8859-9"), NULL },
 171     { _T("ISO-8859-10"), _T("ISO8859-10"), _T("iso885910"), _T("8859-10"), NULL },
 172     { _T("ISO-8859-11"), _T("ISO8859-11"), _T("iso885911"), _T("8859-11"), NULL },
 173     { _T("ISO-8859-12"), _T("ISO8859-12"), _T("iso885912"), _T("8859-12"), NULL },
 174     { _T("ISO-8859-13"), _T("ISO8859-13"), _T("iso885913"), _T("8859-13"), NULL },
 175     { _T("ISO-8859-14"), _T("ISO8859-14"), _T("iso885914"), _T("8859-14"), NULL },
 176     { _T("ISO-8859-15"), _T("ISO8859-15"), _T("iso885915"), _T("8859-15"), NULL },
 177
 178     // although koi8-ru is not strictly speaking the same as koi8-r,
 179     // they are similar enough to make mapping it to koi8 better than
 180     // not recognizing it at all
 181     { wxT( "KOI8-R" ), wxT( "KOI8-RU" ), NULL },
 182     { wxT( "KOI8-U" ), NULL },
 183
 184     { wxT( "WINDOWS-874" ), wxT( "CP-874" ), NULL },
 185     { wxT( "WINDOWS-932" ), wxT( "CP-932" ), NULL },
 186     { wxT( "WINDOWS-936" ), wxT( "CP-936" ), NULL },
 187     { wxT( "WINDOWS-949" ), wxT( "CP-949" ), wxT( "EUC-KR" ), wxT( "eucKR" ), wxT( "euc_kr" ), NULL },
 188     { wxT( "WINDOWS-950" ), wxT( "CP-950" ), NULL },
 189     { wxT( "WINDOWS-1250" ),wxT( "CP-1250" ), NULL },
 190     { wxT( "WINDOWS-1251" ),wxT( "CP-1251" ), NULL },
 191     { wxT( "WINDOWS-1252" ),wxT( "CP-1252" ), wxT("IBM-1252"), NULL },
 192     { wxT( "WINDOWS-1253" ),wxT( "CP-1253" ), NULL },
 193     { wxT( "WINDOWS-1254" ),wxT( "CP-1254" ), NULL },
 194     { wxT( "WINDOWS-1255" ),wxT( "CP-1255" ), NULL },
 195     { wxT( "WINDOWS-1256" ),wxT( "CP-1256" ), NULL },
 196     { wxT( "WINDOWS-1257" ),wxT( "CP-1257" ), NULL },
 197     { wxT( "WINDOWS-437" ), wxT( "CP-437" ), NULL },
 198
 199     { wxT( "UTF-7" ), wxT("utf7"), NULL },
 200     { wxT( "UTF-8" ), wxT("utf8"), NULL },
 201 #ifdef WORDS_BIGENDIAN
 202     { wxT( "UTF-16BE" ), wxT("UCS-2BE"), wxT( "UTF-16" ), wxT("UCS-2"), wxT("UCS2"), NULL },
 203     { wxT( "UTF-16LE" ), wxT("UCS-2LE"), NULL },
 204     { wxT( "UTF-32BE" ), wxT( "UCS-4BE" ), wxT( "UTF-32" ), wxT( "UCS-4" ), wxT("UCS4"), NULL },
 205     { wxT( "UTF-32LE" ), wxT( "UCS-4LE" ), NULL },
 206 #else // WORDS_BIGENDIAN
 207     { wxT( "UTF-16BE" ), wxT("UCS-2BE"), NULL },
 208     { wxT( "UTF-16LE" ), wxT("UCS-2LE"), wxT( "UTF-16" ), wxT("UCS-2"), wxT("UCS2"), NULL },
 209     { wxT( "UTF-32BE" ), wxT( "UCS-4BE" ), NULL },
 210     { wxT( "UTF-32LE" ), wxT( "UCS-4LE" ), wxT( "UTF-32" ), wxT( "UCS-4" ), wxT("UCS4"), NULL },
 211 #endif // WORDS_BIGENDIAN
 212
 213     { wxT( "EUC-JP" ), wxT( "eucJP" ), wxT( "euc_jp" ), wxT( "IBM-eucJP" ), NULL },
 214
 215     // 646 is for Solaris, roman8 -- for HP-UX
 216     { wxT( "US-ASCII" ), wxT( "ASCII" ), wxT("C"), wxT("POSIX"), wxT("ANSI_X3.4-1968"),
 217       wxT("646"), wxT("roman8"), wxT( "" ), NULL },
 218
 219     { wxT( "BIG5" ), wxT("big5"), NULL },
 220     { wxT( "SJIS" ), wxT( "SHIFT-JIS" ), wxT( "SHIFT_JIS" ), NULL },
 221     { wxT( "GB2312" ), NULL },
 222 };
 223
 224 wxCOMPILE_TIME_ASSERT( WXSIZEOF(gs_encodingDescs) == WXSIZEOF(gs_encodings), EncodingsArraysNotInSync );
 225 wxCOMPILE_TIME_ASSERT( WXSIZEOF(gs_encodingNames) == WXSIZEOF(gs_encodings), EncodingsArraysNotInSync );
 226
 227 // ----------------------------------------------------------------------------
 228 // private classes
 229 // ----------------------------------------------------------------------------
 230
 231 // clean up the font mapper object
 232 class wxFontMapperModule : public wxModule
 233 {
 234 public:
 235     wxFontMapperModule() : wxModule() { }
 236     virtual bool OnInit() { return true; }
 237     virtual void OnExit() { delete (wxFontMapperBase*)wxFontMapperBase::Set(NULL); }
 238
 239     DECLARE_DYNAMIC_CLASS(wxFontMapperModule)
 240 };
 241
 242 IMPLEMENT_DYNAMIC_CLASS(wxFontMapperModule, wxModule)
 243
 244
 245 // ============================================================================
 246 // wxFontMapperBase implementation
 247 // ============================================================================
 248
 249 wxFontMapper *wxFontMapperBase::sm_instance = NULL;
 250
 251 // ----------------------------------------------------------------------------
 252 // ctor and dtor
 253 // ----------------------------------------------------------------------------
 254
 255 wxFontMapperBase::wxFontMapperBase()
 256 {
 257 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 258     m_configDummy = NULL;
 259 #endif // wxUSE_CONFIG
 260 }
 261
 262 wxFontMapperBase::~wxFontMapperBase()
 263 {
 264 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 265     if ( m_configDummy )
 266         delete m_configDummy;
 267 #endif // wxUSE_CONFIG
 268 }
 269
 270 bool wxFontMapperBase::IsWxFontMapper()
 271 {   return false; }
 272
 273 /* static */
 274 wxFontMapperBase *wxFontMapperBase::Get()
 275 {
 276     if ( !sm_instance )
 277     {
 278         wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 279         if ( traits )
 280         {
 281             sm_instance = traits->CreateFontMapper();
 282
 283             wxASSERT_MSG( sm_instance,
 284                             _T("wxAppTraits::CreateFontMapper() failed") );
 285         }
 286
 287         if ( !sm_instance )
 288         {
 289             // last resort: we must create something because the existing code
 290             // relies on always having a valid font mapper object
 291             sm_instance = (wxFontMapper *)new wxFontMapperBase;
 292         }
 293     }
 294
 295     return (wxFontMapperBase*)sm_instance;
 296 }
 297
 298 /* static */
 299 wxFontMapper *wxFontMapperBase::Set(wxFontMapper *mapper)
 300 {
 301     wxFontMapper *old = sm_instance;
 302     sm_instance = mapper;
 303     return old;
 304 }
 305
 306 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 307
 308 // ----------------------------------------------------------------------------
 309 // config usage customisation
 310 // ----------------------------------------------------------------------------
 311
 312 /* static */
 313 const wxChar *wxFontMapperBase::GetDefaultConfigPath()
 314 {
 315     return FONTMAPPER_ROOT_PATH;
 316 }
 317
 318 void wxFontMapperBase::SetConfigPath(const wxString& prefix)
 319 {
 320     wxCHECK_RET( !prefix.IsEmpty() && prefix[0] == wxCONFIG_PATH_SEPARATOR,
 321                  wxT("an absolute path should be given to wxFontMapper::SetConfigPath()") );
 322
 323     m_configRootPath = prefix;
 324 }
 325
 326 // ----------------------------------------------------------------------------
 327 // get config object and path for it
 328 // ----------------------------------------------------------------------------
 329
 330 wxConfigBase *wxFontMapperBase::GetConfig()
 331 {
 332     wxConfigBase *config = wxConfig::Get(false);
 333
 334     // If there is no global configuration, use an internal memory configuration
 335     if ( !config )
 336     {
 337         if ( !m_configDummy )
 338             m_configDummy = new wxMemoryConfig;
 339         config = m_configDummy;
 340
 341         // FIXME: ideally, we should add keys from dummy config to a real one later,
 342         //        but it is a low-priority task because typical wxWin application
 343         //        either doesn't use wxConfig at all or creates wxConfig object in
 344         //        wxApp::OnInit(), before any real interaction with the user takes
 345         //        place...
 346     }
 347
 348     return config;
 349 }
 350
 351 const wxString& wxFontMapperBase::GetConfigPath()
 352 {
 353     if ( !m_configRootPath )
 354     {
 355         // use the default
 356         m_configRootPath = GetDefaultConfigPath();
 357     }
 358
 359     return m_configRootPath;
 360 }
 361
 362 // ----------------------------------------------------------------------------
 363 // config helpers
 364 // ----------------------------------------------------------------------------
 365
 366 bool wxFontMapperBase::ChangePath(const wxString& pathNew, wxString *pathOld)
 367 {
 368     wxConfigBase *config = GetConfig();
 369     if ( !config )
 370         return false;
 371
 372     *pathOld = config->GetPath();
 373
 374     wxString path = GetConfigPath();
 375     if ( path.IsEmpty() || path.Last() != wxCONFIG_PATH_SEPARATOR )
 376     {
 377         path += wxCONFIG_PATH_SEPARATOR;
 378     }
 379
 380     wxASSERT_MSG( !pathNew || (pathNew[0] != wxCONFIG_PATH_SEPARATOR),
 381                   wxT("should be a relative path") );
 382
 383     path += pathNew;
 384
 385     config->SetPath(path);
 386
 387     return true;
 388 }
 389
 390 void wxFontMapperBase::RestorePath(const wxString& pathOld)
 391 {
 392     GetConfig()->SetPath(pathOld);
 393 }
 394
 395 #endif
 396
 397 // ----------------------------------------------------------------------------
 398 // charset/encoding correspondence
 399 // ----------------------------------------------------------------------------
 400
 401 wxFontEncoding
 402 wxFontMapperBase::CharsetToEncoding(const wxString& charset,
 403                                     bool WXUNUSED(interactive))
 404 {
 405     int enc = NonInteractiveCharsetToEncoding(charset);
 406     if ( enc == wxFONTENCODING_UNKNOWN )
 407     {
 408         // we should return wxFONTENCODING_SYSTEM from here for unknown
 409         // encodings
 410         enc = wxFONTENCODING_SYSTEM;
 411     }
 412
 413     return (wxFontEncoding)enc;
 414 }
 415
 416 int
 417 wxFontMapperBase::NonInteractiveCharsetToEncoding(const wxString& charset)
 418 {
 419     wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 420
 421     // we're going to modify it, make a copy
 422     wxString cs = charset;
 423
 424 #if wxUSE_CONFIG && wxUSE_FILECONFIG
 425     // first try the user-defined settings
 426     wxFontMapperPathChanger path(this, FONTMAPPER_CHARSET_PATH);
 427     if ( path.IsOk() )
 428     {
 429         wxConfigBase *config = GetConfig();
 430
 431         // do we have an encoding for this charset?
 432         long value = config->Read(charset, -1l);
 433         if ( value != -1 )
 434         {
 435             if ( value == wxFONTENCODING_UNKNOWN )
 436             {
 437                 // don't try to find it, in particular don't ask the user
 438                 return value;
 439             }
 440
 441             if ( value >= 0 && value <= wxFONTENCODING_MAX )
 442             {
 443                 encoding = (wxFontEncoding)value;
 444             }
 445             else
 446             {
 447                 wxLogDebug(wxT("corrupted config data: invalid encoding %ld for charset '%s' ignored"),
 448                            value, charset.c_str());
 449             }
 450         }
 451
 452         if ( encoding == wxFONTENCODING_SYSTEM )
 453         {
 454             // may be we have an alias?
 455             config->SetPath(FONTMAPPER_CHARSET_ALIAS_PATH);
 456
 457             wxString alias = config->Read(charset);
 458             if ( !alias.IsEmpty() )
 459             {
 460                 // yes, we do - use it instead
 461                 cs = alias;
 462             }
 463         }
 464     }
 465 #endif // wxUSE_CONFIG
 466
 467     // if didn't find it there, try to recognize it ourselves
 468     if ( encoding == wxFONTENCODING_SYSTEM )
 469     {
 470         // trim any spaces
 471         cs.Trim(true);
 472         cs.Trim(false);
 473
 474         // discard the optional quotes
 475         if ( !cs.empty() )
 476         {
 477             if ( cs[0u] == _T('"') && cs.Last() == _T('"') )
 478             {
 479                 cs = wxString(cs.c_str(), cs.length() - 1);
 480             }
 481         }
 482
 483         for ( size_t i = 0; i < WXSIZEOF(gs_encodingNames); ++i )
 484         {
 485             for ( const wxChar** encName = gs_encodingNames[i]; *encName; ++encName )
 486             {
 487                 if ( cs.CmpNoCase(*encName) == 0 )
 488                     return gs_encodings[i];
 489             }
 490         }
 491
 492         cs.MakeUpper();
 493
 494         if ( cs.Left(3) == wxT("ISO") )
 495         {
 496             // the dash is optional (or, to be exact, it is not, but
 497             // several brokenmails "forget" it)
 498             const wxChar *p = cs.c_str() + 3;
 499             if ( *p == wxT('-') )
 500                 p++;
 501
 502             // printf( "iso %s\n", (const char*) cs.ToAscii() );
 503
 504             unsigned int value;
 505             if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
 506             {
 507                 // printf( "value %d\n", (int)value );
 508
 509                 // make it 0 based and check that it is strictly positive in
 510                 // the process (no such thing as iso8859-0 encoding)
 511                 if ( (value-- > 0) &&
 512                      (value < wxFONTENCODING_ISO8859_MAX -
 513                               wxFONTENCODING_ISO8859_1) )
 514                 {
 515                     // it's a valid ISO8859 encoding
 516                     value += wxFONTENCODING_ISO8859_1;
 517                     encoding = (wxFontEncoding)value;
 518                 }
 519             }
 520         }
 521         else if ( cs.Left(4) == wxT("8859") )
 522         {
 523             const wxChar *p = cs.c_str();
 524
 525             unsigned int value;
 526             if ( wxSscanf(p, wxT("8859-%u"), &value) == 1 )
 527             {
 528                 // printf( "value %d\n", (int)value );
 529
 530                 // make it 0 based and check that it is strictly positive in
 531                 // the process (no such thing as iso8859-0 encoding)
 532                 if ( (value-- > 0) &&
 533                      (value < wxFONTENCODING_ISO8859_MAX -
 534                               wxFONTENCODING_ISO8859_1) )
 535                 {
 536                     // it's a valid ISO8859 encoding
 537                     value += wxFONTENCODING_ISO8859_1;
 538                     encoding = (wxFontEncoding)value;
 539                 }
 540             }
 541         }
 542         else // check for Windows charsets
 543         {
 544             size_t len;
 545             if ( cs.Left(7) == wxT("WINDOWS") )
 546             {
 547                 len = 7;
 548             }
 549             else if ( cs.Left(2) == wxT("CP") )
 550             {
 551                 len = 2;
 552             }
 553             else // not a Windows encoding
 554             {
 555                 len = 0;
 556             }
 557
 558             if ( len )
 559             {
 560                 const wxChar *p = cs.c_str() + len;
 561                 if ( *p == wxT('-') )
 562                     p++;
 563
 564                 unsigned int value;
 565                 if ( wxSscanf(p, wxT("%u"), &value) == 1 )
 566                 {
 567                     if ( value >= 1250 )
 568                     {
 569                         value -= 1250;
 570                         if ( value < wxFONTENCODING_CP12_MAX -
 571                                      wxFONTENCODING_CP1250 )
 572                         {
 573                             // a valid Windows code page
 574                             value += wxFONTENCODING_CP1250;
 575                             encoding = (wxFontEncoding)value;
 576                         }
 577                     }
 578
 579                     switch ( value )
 580                     {
 581                         case 874:
 582                             encoding = wxFONTENCODING_CP874;
 583                             break;
 584
 585                         case 932:
 586                             encoding = wxFONTENCODING_CP932;
 587                             break;
 588
 589                         case 936:
 590                             encoding = wxFONTENCODING_CP936;
 591                             break;
 592
 593                         case 949:
 594                             encoding = wxFONTENCODING_CP949;
 595                             break;
 596
 597                         case 950:
 598                             encoding = wxFONTENCODING_CP950;
 599                             break;
 600                     }
 601                 }
 602             }
 603         }
 604         //else: unknown
 605     }
 606
 607     return encoding;
 608 }
 609
 610 /* static */
 611 size_t wxFontMapperBase::GetSupportedEncodingsCount()
 612 {
 613     return WXSIZEOF(gs_encodings);
 614 }
 615
 616 /* static */
 617 wxFontEncoding wxFontMapperBase::GetEncoding(size_t n)
 618 {
 619     wxCHECK_MSG( n < WXSIZEOF(gs_encodings), wxFONTENCODING_SYSTEM,
 620                     _T("wxFontMapper::GetEncoding(): invalid index") );
 621
 622     return gs_encodings[n];
 623 }
 624
 625 /* static */
 626 wxString wxFontMapperBase::GetEncodingDescription(wxFontEncoding encoding)
 627 {
 628     if ( encoding == wxFONTENCODING_DEFAULT )
 629     {
 630         return _("Default encoding");
 631     }
 632
 633     const size_t count = WXSIZEOF(gs_encodingDescs);
 634
 635     for ( size_t i = 0; i < count; i++ )
 636     {
 637         if ( gs_encodings[i] == encoding )
 638         {
 639             return wxGetTranslation(gs_encodingDescs[i]);
 640         }
 641     }
 642
 643     wxString str;
 644     str.Printf(_("Unknown encoding (%d)"), encoding);
 645
 646     return str;
 647 }
 648
 649 /* static */
 650 wxString wxFontMapperBase::GetEncodingName(wxFontEncoding encoding)
 651 {
 652     if ( encoding == wxFONTENCODING_DEFAULT )
 653     {
 654         return _("default");
 655     }
 656
 657     const size_t count = WXSIZEOF(gs_encodingNames);
 658
 659     for ( size_t i = 0; i < count; i++ )
 660     {
 661         if ( gs_encodings[i] == encoding )
 662         {
 663             return gs_encodingNames[i][0];
 664         }
 665     }
 666
 667     wxString str;
 668     str.Printf(_("unknown-%d"), encoding);
 669
 670     return str;
 671 }
 672
 673 /* static */
 674 const wxChar** wxFontMapperBase::GetAllEncodingNames(wxFontEncoding encoding)
 675 {
 676     static const wxChar* dummy[] = { NULL };
 677
 678     for ( size_t i = 0; i < WXSIZEOF(gs_encodingNames); i++ )
 679     {
 680         if ( gs_encodings[i] == encoding )
 681         {
 682             return gs_encodingNames[i];
 683         }
 684     }
 685
 686     return dummy;
 687 }
 688
 689 /* static */
 690 wxFontEncoding wxFontMapperBase::GetEncodingFromName(const wxString& name)
 691 {
 692     const size_t count = WXSIZEOF(gs_encodingNames);
 693
 694     for ( size_t i = 0; i < count; i++ )
 695     {
 696         for ( const wxChar** encName = gs_encodingNames[i]; *encName; ++encName )
 697         {
 698             if ( name.CmpNoCase(*encName) == 0 )
 699                 return gs_encodings[i];
 700         }
 701     }
 702
 703     return wxFONTENCODING_MAX;
 704 }
 705
 706 #endif // wxUSE_FONTMAP
 707