src/common/intl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        intl.cpp
   3 // Purpose:     Internationalization and localisation for wxWindows
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declaration
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "intl.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_INTL
  32
  33 // standard headers
  34 #include  <locale.h>
  35 #include  <ctype.h>
  36
  37 // wxWindows
  38 #include "wx/defs.h"
  39 #include "wx/string.h"
  40 #include "wx/intl.h"
  41 #include "wx/file.h"
  42 #include "wx/log.h"
  43 #include "wx/debug.h"
  44 #include "wx/utils.h"
  45
  46 #include <stdlib.h>
  47
  48 // ----------------------------------------------------------------------------
  49 // simple types
  50 // ----------------------------------------------------------------------------
  51
  52 // this should *not* be wxChar, this type must have exactly 8 bits!
  53 typedef unsigned char size_t8;
  54
  55 #ifdef __WXMSW__
  56     #if defined(__WIN16__)
  57         typedef unsigned long size_t32;
  58     #elif defined(__WIN32__)
  59         typedef unsigned int size_t32;
  60     #else
  61         // Win64 will have different type sizes
  62         #error "Please define a 32 bit type"
  63     #endif
  64 #else // !Windows
  65     // SIZEOF_XXX are defined by configure
  66     #if defined(SIZEOF_INT) && (SIZEOF_INT == 4)
  67         typedef unsigned int size_t32;
  68     #elif defined(SIZEOF_LONG) && (SIZEOF_LONG == 4)
  69         typedef unsigned long size_t32;
  70     #else
  71         // assume sizeof(int) == 4 - what else can we do
  72         typedef unsigned int size_t32;
  73
  74         // ... but at least check it during run time
  75         static class IntSizeChecker
  76         {
  77         public:
  78             IntSizeChecker()
  79             {
  80                 // Asserting a sizeof directly causes some compilers to
  81                 // issue a "using constant in a conditional expression" warning
  82                 size_t intsize = sizeof(int);
  83
  84                 wxASSERT_MSG( intsize == 4,
  85                               "size_t32 is incorrectly defined!" );
  86             }
  87         } intsizechecker;
  88     #endif
  89 #endif // Win/!Win
  90
  91 // ----------------------------------------------------------------------------
  92 // constants
  93 // ----------------------------------------------------------------------------
  94
  95 // magic number identifying the .mo format file
  96 const size_t32 MSGCATALOG_MAGIC    = 0x950412de;
  97 const size_t32 MSGCATALOG_MAGIC_SW = 0xde120495;
  98
  99 // extension of ".mo" files
 100 #define MSGCATALOG_EXTENSION  _T(".mo")
 101
 102 // ----------------------------------------------------------------------------
 103 // global functions
 104 // ----------------------------------------------------------------------------
 105
 106 // suppress further error messages about missing translations
 107 // (if you don't have one catalog file, you wouldn't like to see the
 108 //  error message for each string in it, so normally it's given only
 109 //  once)
 110 void wxSuppressTransErrors();
 111
 112 // restore the logging
 113 void wxRestoreTransErrors();
 114
 115 // get the current state
 116 bool wxIsLoggingTransErrors();
 117
 118 static wxLocale *wxSetLocale(wxLocale *pLocale);
 119
 120 // ----------------------------------------------------------------------------
 121 // wxMsgCatalog corresponds to one disk-file message catalog.
 122 //
 123 // This is a "low-level" class and is used only by wxLocale (that's why
 124 // it's designed to be stored in a linked list)
 125 // ----------------------------------------------------------------------------
 126
 127 class wxMsgCatalog
 128 {
 129 public:
 130   // ctor & dtor
 131   wxMsgCatalog();
 132  ~wxMsgCatalog();
 133
 134   // load the catalog from disk (szDirPrefix corresponds to language)
 135   bool Load(const wxChar *szDirPrefix, const wxChar *szName, bool bConvertEncoding = FALSE);
 136   bool IsLoaded() const { return m_pData != NULL; }
 137
 138   // get name of the catalog
 139   const wxChar *GetName() const { return m_pszName; }
 140
 141   // get the translated string: returns NULL if not found
 142   const char *GetString(const char *sz) const;
 143
 144   // public variable pointing to the next element in a linked list (or NULL)
 145   wxMsgCatalog *m_pNext;
 146
 147 private:
 148   // this implementation is binary compatible with GNU gettext() version 0.10
 149
 150   // an entry in the string table
 151   struct wxMsgTableEntry
 152   {
 153     size_t32   nLen;           // length of the string
 154     size_t32   ofsString;      // pointer to the string
 155   };
 156
 157   // header of a .mo file
 158   struct wxMsgCatalogHeader
 159   {
 160     size_t32  magic,          // offset +00:  magic id
 161               revision,       //        +04:  revision
 162               numStrings;     //        +08:  number of strings in the file
 163     size_t32  ofsOrigTable,   //        +0C:  start of original string table
 164               ofsTransTable;  //        +10:  start of translated string table
 165     size_t32  nHashSize,      //        +14:  hash table size
 166               ofsHashTable;   //        +18:  offset of hash table start
 167   };
 168
 169   // all data is stored here, NULL if no data loaded
 170   size_t8 *m_pData;
 171
 172   // data description
 173   size_t32          m_numStrings,   // number of strings in this domain
 174                     m_nHashSize;    // number of entries in hash table
 175   size_t32         *m_pHashTable;   // pointer to hash table
 176   wxMsgTableEntry  *m_pOrigTable,   // pointer to original   strings
 177                    *m_pTransTable;  //            translated
 178
 179   const char *StringAtOfs(wxMsgTableEntry *pTable, size_t32 index) const
 180     { return (const char *)(m_pData + Swap(pTable[index].ofsString)); }
 181
 182   // convert encoding to platform native one, if neccessary
 183   void ConvertEncoding();
 184
 185   // utility functions
 186     // calculate the hash value of given string
 187   static inline size_t32 GetHash(const char *sz);
 188     // big<->little endian
 189   inline size_t32 Swap(size_t32 ui) const;
 190
 191   // internal state
 192   bool HasHashTable() const // true if hash table is present
 193     { return m_nHashSize > 2 && m_pHashTable != NULL; }
 194
 195   bool          m_bSwapped;   // wrong endianness?
 196
 197   wxChar       *m_pszName;    // name of the domain
 198 };
 199
 200 // ----------------------------------------------------------------------------
 201 // global variables
 202 // ----------------------------------------------------------------------------
 203
 204 // the list of the directories to search for message catalog files
 205 static wxArrayString s_searchPrefixes;
 206
 207 // ============================================================================
 208 // implementation
 209 // ============================================================================
 210
 211 // ----------------------------------------------------------------------------
 212 // wxMsgCatalog class
 213 // ----------------------------------------------------------------------------
 214
 215 // calculate hash value using the so called hashpjw function by P.J. Weinberger
 216 // [see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools]
 217 size_t32 wxMsgCatalog::GetHash(const char *sz)
 218 {
 219   #define HASHWORDBITS 32     // the length of size_t32
 220
 221   size_t32 hval = 0;
 222   size_t32 g;
 223   while ( *sz != '\0' ) {
 224     hval <<= 4;
 225     hval += (size_t32)*sz++;
 226     g = hval & ((size_t32)0xf << (HASHWORDBITS - 4));
 227     if ( g != 0 ) {
 228       hval ^= g >> (HASHWORDBITS - 8);
 229       hval ^= g;
 230     }
 231   }
 232
 233   return hval;
 234 }
 235
 236 // swap the 2 halves of 32 bit integer if needed
 237 size_t32 wxMsgCatalog::Swap(size_t32 ui) const
 238 {
 239   return m_bSwapped ? (ui << 24) | ((ui & 0xff00) << 8) |
 240                       ((ui >> 8) & 0xff00) | (ui >> 24)
 241                     : ui;
 242 }
 243
 244 wxMsgCatalog::wxMsgCatalog()
 245 {
 246   m_pData   = NULL;
 247   m_pszName = NULL;
 248 }
 249
 250 wxMsgCatalog::~wxMsgCatalog()
 251 {
 252   wxDELETEA(m_pData);
 253   wxDELETEA(m_pszName);
 254 }
 255
 256 // small class to suppress the translation erros until exit from current scope
 257 class NoTransErr
 258 {
 259 public:
 260     NoTransErr() { wxSuppressTransErrors(); }
 261    ~NoTransErr() { wxRestoreTransErrors();  }
 262 };
 263
 264 // return all directories to search for given prefix
 265 static wxString GetAllMsgCatalogSubdirs(const wxChar *prefix,
 266                                         const wxChar *lang)
 267 {
 268     wxString searchPath;
 269
 270     // search first in prefix/fr/LC_MESSAGES, then in prefix/fr and finally in
 271     // prefix (assuming the language is 'fr')
 272     searchPath << prefix << wxFILE_SEP_PATH << lang << wxFILE_SEP_PATH
 273                          << wxT("LC_MESSAGES") << wxPATH_SEP
 274                << prefix << wxFILE_SEP_PATH << lang << wxPATH_SEP
 275                << prefix << wxPATH_SEP;
 276
 277     return searchPath;
 278 }
 279
 280 // construct the search path for the given language
 281 static wxString GetFullSearchPath(const wxChar *lang)
 282 {
 283     wxString searchPath;
 284
 285     // first take the entries explicitly added by the program
 286     size_t count = s_searchPrefixes.Count();
 287     for ( size_t n = 0; n < count; n++ )
 288     {
 289         searchPath << GetAllMsgCatalogSubdirs(s_searchPrefixes[n], lang)
 290                    << wxPATH_SEP;
 291     }
 292
 293     // LC_PATH is a standard env var containing the search path for the .mo
 294     // files
 295     const wxChar *pszLcPath = wxGetenv("LC_PATH");
 296     if ( pszLcPath != NULL )
 297         searchPath << GetAllMsgCatalogSubdirs(pszLcPath, lang);
 298
 299     // then take the current directory
 300     // FIXME it should be the directory of the executable
 301     searchPath << GetAllMsgCatalogSubdirs(wxT("."), lang);
 302
 303     // and finally add some standard ones
 304     searchPath
 305         << GetAllMsgCatalogSubdirs(wxT("/usr/share/locale"), lang)
 306         << GetAllMsgCatalogSubdirs(wxT("/usr/lib/locale"), lang)
 307         << GetAllMsgCatalogSubdirs(wxT("/usr/local/share/locale"), lang);
 308
 309     return searchPath;
 310 }
 311
 312 // open disk file and read in it's contents
 313 bool wxMsgCatalog::Load(const wxChar *szDirPrefix, const wxChar *szName0, bool bConvertEncoding)
 314 {
 315    /* We need to handle locales like  de_AT.iso-8859-1
 316       For this we first chop off the .CHARSET specifier and ignore it.
 317       FIXME: UNICODE SUPPORT: must use CHARSET specifier!
 318    */
 319    wxString szName = szName0;
 320    if(szName.Find(wxT('.')) != -1) // contains a dot
 321       szName = szName.Left(szName.Find(wxT('.')));
 322
 323   wxString searchPath = GetFullSearchPath(szDirPrefix);
 324   const wxChar *sublocale = wxStrchr(szDirPrefix, wxT('_'));
 325   if ( sublocale )
 326   {
 327       // also add just base locale name: for things like "fr_BE" (belgium
 328       // french) we should use "fr" if no belgium specific message catalogs
 329       // exist
 330       searchPath << GetFullSearchPath(wxString(szDirPrefix).
 331                                       Left((size_t)(sublocale - szDirPrefix)))
 332                  << wxPATH_SEP;
 333   }
 334
 335   wxString strFile = szName;
 336   strFile += MSGCATALOG_EXTENSION;
 337
 338   // don't give translation errors here because the wxstd catalog might
 339   // not yet be loaded (and it's normal)
 340   //
 341   // (we're using an object because we have several return paths)
 342
 343   NoTransErr noTransErr;
 344   wxLogVerbose(_("looking for catalog '%s' in path '%s'."),
 345                szName.c_str(), searchPath.c_str());
 346
 347   wxString strFullName;
 348   if ( !wxFindFileInPath(&strFullName, searchPath, strFile) ) {
 349     wxLogWarning(_("catalog file for domain '%s' not found."), szName.c_str());
 350     return FALSE;
 351   }
 352
 353   // open file
 354   wxLogVerbose(_("using catalog '%s' from '%s'."),
 355              szName.c_str(), strFullName.c_str());
 356
 357   wxFile fileMsg(strFullName);
 358   if ( !fileMsg.IsOpened() )
 359     return FALSE;
 360
 361   // get the file size
 362   off_t nSize = fileMsg.Length();
 363   if ( nSize == wxInvalidOffset )
 364     return FALSE;
 365
 366   // read the whole file in memory
 367   m_pData = new size_t8[nSize];
 368   if ( fileMsg.Read(m_pData, nSize) != nSize ) {
 369     wxDELETEA(m_pData);
 370     return FALSE;
 371   }
 372
 373   // examine header
 374   bool bValid = (size_t)nSize > sizeof(wxMsgCatalogHeader);
 375
 376   wxMsgCatalogHeader *pHeader = (wxMsgCatalogHeader *)m_pData;
 377   if ( bValid ) {
 378     // we'll have to swap all the integers if it's true
 379     m_bSwapped = pHeader->magic == MSGCATALOG_MAGIC_SW;
 380
 381     // check the magic number
 382     bValid = m_bSwapped || pHeader->magic == MSGCATALOG_MAGIC;
 383   }
 384
 385   if ( !bValid ) {
 386     // it's either too short or has incorrect magic number
 387     wxLogWarning(_("'%s' is not a valid message catalog."), strFullName.c_str());
 388
 389     wxDELETEA(m_pData);
 390     return FALSE;
 391   }
 392
 393   // initialize
 394   m_numStrings  = Swap(pHeader->numStrings);
 395   m_pOrigTable  = (wxMsgTableEntry *)(m_pData +
 396                    Swap(pHeader->ofsOrigTable));
 397   m_pTransTable = (wxMsgTableEntry *)(m_pData +
 398                    Swap(pHeader->ofsTransTable));
 399
 400   m_nHashSize   = Swap(pHeader->nHashSize);
 401   m_pHashTable  = (size_t32 *)(m_pData + Swap(pHeader->ofsHashTable));
 402
 403   m_pszName = new wxChar[wxStrlen(szName) + 1];
 404   wxStrcpy(m_pszName, szName);
 405
 406   if (bConvertEncoding)
 407       ConvertEncoding();
 408
 409   // everything is fine
 410   return TRUE;
 411 }
 412
 413 // search for a string
 414 const char *wxMsgCatalog::GetString(const char *szOrig) const
 415 {
 416   if ( szOrig == NULL )
 417     return NULL;
 418
 419   if ( HasHashTable() ) {   // use hash table for lookup if possible
 420     size_t32 nHashVal = GetHash(szOrig);
 421     size_t32 nIndex   = nHashVal % m_nHashSize;
 422
 423     size_t32 nIncr = 1 + (nHashVal % (m_nHashSize - 2));
 424
 425 #if defined(__VISAGECPP__)
 426 // VA just can't stand while(1) or while(TRUE)
 427     bool bOs2var = TRUE;
 428     while(bOs2var) {
 429 #else
 430     while (1) {
 431 #endif
 432       size_t32 nStr = Swap(m_pHashTable[nIndex]);
 433       if ( nStr == 0 )
 434         return NULL;
 435
 436       if ( strcmp(szOrig, StringAtOfs(m_pOrigTable, nStr - 1)) == 0 )
 437         return StringAtOfs(m_pTransTable, nStr - 1);
 438
 439       if ( nIndex >= m_nHashSize - nIncr)
 440         nIndex -= m_nHashSize - nIncr;
 441       else
 442         nIndex += nIncr;
 443     }
 444   }
 445   else {                    // no hash table: use default binary search
 446     size_t32 bottom = 0,
 447            top    = m_numStrings,
 448            current;
 449     while ( bottom < top ) {
 450       current = (bottom + top) / 2;
 451       int res = strcmp(szOrig, StringAtOfs(m_pOrigTable, current));
 452       if ( res < 0 )
 453         top = current;
 454       else if ( res > 0 )
 455         bottom = current + 1;
 456       else    // found!
 457         return StringAtOfs(m_pTransTable, current);
 458     }
 459   }
 460
 461   // not found
 462   return NULL;
 463 }
 464
 465
 466 #if wxUSE_GUI
 467 #include "wx/fontmap.h"
 468 #include "wx/encconv.h"
 469 #endif
 470
 471 void wxMsgCatalog::ConvertEncoding()
 472 {
 473 #if wxUSE_GUI
 474     wxFontEncoding enc;
 475
 476     // first, find encoding header:
 477     const char *hdr = StringAtOfs(m_pOrigTable, 0);
 478     if (hdr == NULL) return; // not supported by this catalog, does not have non-fuzzy header
 479     if (hdr[0] != 0) return; // ditto
 480
 481     /* we support catalogs with header (msgid "") that is _not_ marked as "#, fuzzy" (otherwise
 482        the string would not be included into compiled catalog) */
 483     wxString header(StringAtOfs(m_pTransTable, 0));
 484     wxString charset;
 485     int pos = header.Find(wxT("Content-Type: text/plain; charset="));
 486     if (pos == wxNOT_FOUND)
 487         return; // incorrectly filled Content-Type header
 488     size_t n = pos + 34; /*strlen("Content-Type: text/plain; charset=")*/
 489     while (header[n] != wxT('\n'))
 490         charset << header[n++];
 491
 492     enc = wxTheFontMapper->CharsetToEncoding(charset, FALSE);
 493     if ( enc == wxFONTENCODING_SYSTEM )
 494         return; // unknown encoding
 495
 496     wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(enc);
 497     if (a[0] == enc)
 498         return; // no conversion needed, locale uses native encoding
 499
 500     if (a.GetCount() == 0)
 501         return; // we don't know common equiv. under this platform
 502
 503     wxEncodingConverter converter;
 504
 505     converter.Init(enc, a[0]);
 506     for (size_t i = 0; i < m_numStrings; i++)
 507         converter.Convert((char*)StringAtOfs(m_pTransTable, i));
 508 #endif
 509 }
 510
 511
 512 // ----------------------------------------------------------------------------
 513 // wxLocale
 514 // ----------------------------------------------------------------------------
 515
 516 wxLocale::wxLocale()
 517 {
 518   m_pszOldLocale = NULL;
 519   m_pMsgCat = NULL;
 520 }
 521
 522 // NB: this function has (desired) side effect of changing current locale
 523 bool wxLocale::Init(const wxChar *szName,
 524                     const wxChar *szShort,
 525                     const wxChar *szLocale,
 526                     bool        bLoadDefault,
 527                     bool        bConvertEncoding)
 528 {
 529   m_strLocale = szName;
 530   m_strShort = szShort;
 531   m_bConvertEncoding = bConvertEncoding;
 532
 533   // change current locale (default: same as long name)
 534   if ( szLocale == NULL )
 535   {
 536     // the argument to setlocale()
 537     szLocale = szShort;
 538   }
 539   m_pszOldLocale = wxSetlocale(LC_ALL, szLocale);
 540   if ( m_pszOldLocale == NULL )
 541     wxLogError(_("locale '%s' can not be set."), szLocale);
 542
 543   // the short name will be used to look for catalog files as well,
 544   // so we need something here
 545   if ( m_strShort.IsEmpty() ) {
 546     // FIXME I don't know how these 2 letter abbreviations are formed,
 547     //       this wild guess is surely wrong
 548     m_strShort = tolower(szLocale[0]) + tolower(szLocale[1]);
 549   }
 550
 551   // save the old locale to be able to restore it later
 552   m_pOldLocale = wxSetLocale(this);
 553
 554   // load the default catalog with wxWindows standard messages
 555   m_pMsgCat = NULL;
 556   bool bOk = TRUE;
 557   if ( bLoadDefault )
 558     bOk = AddCatalog(wxT("wxstd"));
 559
 560   return bOk;
 561 }
 562
 563 void wxLocale::AddCatalogLookupPathPrefix(const wxString& prefix)
 564 {
 565     if ( s_searchPrefixes.Index(prefix) == wxNOT_FOUND )
 566     {
 567         s_searchPrefixes.Add(prefix);
 568     }
 569     //else: already have it
 570 }
 571
 572 // clean up
 573 wxLocale::~wxLocale()
 574 {
 575     // free memory
 576     wxMsgCatalog *pTmpCat;
 577     while ( m_pMsgCat != NULL ) {
 578         pTmpCat = m_pMsgCat;
 579         m_pMsgCat = m_pMsgCat->m_pNext;
 580         delete pTmpCat;
 581     }
 582
 583     // restore old locale
 584     wxSetLocale(m_pOldLocale);
 585     wxSetlocale(LC_ALL, m_pszOldLocale);
 586 }
 587
 588 // get the translation of given string in current locale
 589 const wxMB2WXbuf wxLocale::GetString(const wxChar *szOrigString,
 590                                      const wxChar *szDomain) const
 591 {
 592   if ( wxIsEmpty(szOrigString) )
 593       return szDomain;
 594
 595   const char *pszTrans = NULL;
 596 #if wxUSE_UNICODE
 597   const wxWX2MBbuf szOrgString = wxConvCurrent->cWX2MB(szOrigString);
 598 #else // ANSI
 599   #define szOrgString szOrigString
 600 #endif // Unicode/ANSI
 601
 602   wxMsgCatalog *pMsgCat;
 603   if ( szDomain != NULL ) {
 604     pMsgCat = FindCatalog(szDomain);
 605
 606     // does the catalog exist?
 607     if ( pMsgCat != NULL )
 608       pszTrans = pMsgCat->GetString(szOrgString);
 609   }
 610   else {
 611     // search in all domains
 612     for ( pMsgCat = m_pMsgCat; pMsgCat != NULL; pMsgCat = pMsgCat->m_pNext ) {
 613       pszTrans = pMsgCat->GetString(szOrgString);
 614       if ( pszTrans != NULL )   // take the first found
 615         break;
 616     }
 617   }
 618
 619   if ( pszTrans == NULL ) {
 620     if ( wxIsLoggingTransErrors() ) {
 621       // suppress further error messages if we're not debugging: this avoids
 622       // flooding the user with messages about each and every missing string if,
 623       // for example, a whole catalog file is missing.
 624
 625       // do it before calling LogWarning to prevent infinite recursion!
 626 #ifdef __WXDEBUG__
 627       NoTransErr noTransErr;
 628 #else // !debug
 629       wxSuppressTransErrors();
 630 #endif // debug/!debug
 631
 632       if ( szDomain != NULL )
 633       {
 634         wxLogWarning(_("string '%s' not found in domain '%s' for locale '%s'."),
 635                      szOrigString, szDomain, m_strLocale.c_str());
 636       }
 637       else
 638       {
 639         wxLogWarning(_("string '%s' not found in locale '%s'."),
 640                      szOrigString, m_strLocale.c_str());
 641       }
 642     }
 643
 644     return (wxMB2WXbuf)(szOrigString);
 645   }
 646   else
 647   {
 648     return wxConvertMB2WX(pszTrans); // or preferably wxCSConv(charset).cMB2WX(pszTrans) or something,
 649                                      // a macro similar to wxConvertMB2WX could be written for that
 650   }
 651
 652   #undef szOrgString
 653 }
 654
 655 // find catalog by name in a linked list, return NULL if !found
 656 wxMsgCatalog *wxLocale::FindCatalog(const wxChar *szDomain) const
 657 {
 658 // linear search in the linked list
 659   wxMsgCatalog *pMsgCat;
 660   for ( pMsgCat = m_pMsgCat; pMsgCat != NULL; pMsgCat = pMsgCat->m_pNext ) {
 661     if ( wxStricmp(pMsgCat->GetName(), szDomain) == 0 )
 662       return pMsgCat;
 663   }
 664
 665   return NULL;
 666 }
 667
 668 // check if the given catalog is loaded
 669 bool wxLocale::IsLoaded(const wxChar *szDomain) const
 670 {
 671   return FindCatalog(szDomain) != NULL;
 672 }
 673
 674 // add a catalog to our linked list
 675 bool wxLocale::AddCatalog(const wxChar *szDomain)
 676 {
 677   wxMsgCatalog *pMsgCat = new wxMsgCatalog;
 678
 679   if ( pMsgCat->Load(m_strShort, szDomain, m_bConvertEncoding) ) {
 680     // add it to the head of the list so that in GetString it will
 681     // be searched before the catalogs added earlier
 682     pMsgCat->m_pNext = m_pMsgCat;
 683     m_pMsgCat = pMsgCat;
 684
 685     return TRUE;
 686   }
 687   else {
 688     // don't add it because it couldn't be loaded anyway
 689     delete pMsgCat;
 690
 691     return FALSE;
 692   }
 693 }
 694
 695 // ----------------------------------------------------------------------------
 696 // global functions and variables
 697 // ----------------------------------------------------------------------------
 698
 699 // translation errors logging
 700 // --------------------------
 701
 702 static bool gs_bGiveTransErrors = TRUE;
 703
 704 void wxSuppressTransErrors()
 705 {
 706   gs_bGiveTransErrors = FALSE;
 707 }
 708
 709 void wxRestoreTransErrors()
 710 {
 711   gs_bGiveTransErrors = TRUE;
 712 }
 713
 714 bool wxIsLoggingTransErrors()
 715 {
 716   return gs_bGiveTransErrors;
 717 }
 718
 719 // retrieve/change current locale
 720 // ------------------------------
 721
 722 // the current locale object
 723 static wxLocale *g_pLocale = NULL;
 724
 725 wxLocale *wxGetLocale()
 726 {
 727   return g_pLocale;
 728 }
 729
 730 wxLocale *wxSetLocale(wxLocale *pLocale)
 731 {
 732   wxLocale *pOld = g_pLocale;
 733   g_pLocale = pLocale;
 734   return pOld;
 735 }
 736
 737 #endif // wxUSE_INTL
 738