src/common/strconv.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        strconv.cpp
   3 // Purpose:     Unicode conversion classes
   4 // Author:      Ove Kaaven, Robert Roebling, Vadim Zeitlin, Vaclav Slavik
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Ove Kaaven, Robert Roebling, Vaclav Slavik
   9 //              (c) 2000-2003 Vadim Zeitlin
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  22   #pragma implementation "strconv.h"
  23 #endif
  24
  25 // For compilers that support precompilation, includes "wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29   #pragma hdrstop
  30 #endif
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/intl.h"
  34     #include "wx/log.h"
  35 #endif // WX_PRECOMP
  36
  37 #include "wx/strconv.h"
  38
  39 #if wxUSE_WCHAR_T
  40
  41 #ifdef __WXMSW__
  42     #include "wx/msw/private.h"
  43 #endif
  44
  45 #ifndef __WXWINCE__
  46 #include <errno.h>
  47 #endif
  48
  49 #include <ctype.h>
  50 #include <string.h>
  51 #include <stdlib.h>
  52
  53 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
  54     #define wxHAVE_WIN32_MB2WC
  55 #endif // __WIN32__ but !__WXMICROWIN__
  56
  57 // ----------------------------------------------------------------------------
  58 // headers
  59 // ----------------------------------------------------------------------------
  60
  61 #ifdef __SALFORDC__
  62     #include <clib.h>
  63 #endif
  64
  65 #ifdef HAVE_ICONV
  66     #include <iconv.h>
  67 #endif
  68
  69 #include "wx/encconv.h"
  70 #include "wx/fontmap.h"
  71
  72 // ----------------------------------------------------------------------------
  73 // macros
  74 // ----------------------------------------------------------------------------
  75
  76 #define BSWAP_UCS4(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT32_SWAP_ALWAYS(str[_c]); }
  77 #define BSWAP_UTF16(str, len) { unsigned _c; for (_c=0; _c<len; _c++) str[_c]=wxUINT16_SWAP_ALWAYS(str[_c]); }
  78
  79 #if SIZEOF_WCHAR_T == 4
  80     #define WC_NAME         "UCS4"
  81     #define WC_BSWAP         BSWAP_UCS4
  82     #ifdef WORDS_BIGENDIAN
  83       #define WC_NAME_BEST  "UCS-4BE"
  84     #else
  85       #define WC_NAME_BEST  "UCS-4LE"
  86     #endif
  87 #elif SIZEOF_WCHAR_T == 2
  88     #define WC_NAME         "UTF16"
  89     #define WC_BSWAP         BSWAP_UTF16
  90     #define WC_UTF16
  91     #ifdef WORDS_BIGENDIAN
  92       #define WC_NAME_BEST  "UTF-16BE"
  93     #else
  94       #define WC_NAME_BEST  "UTF-16LE"
  95     #endif
  96 #else // sizeof(wchar_t) != 2 nor 4
  97     // does this ever happen?
  98     #error "Unknown sizeof(wchar_t): please report this to wx-dev@lists.wxwindows.org"
  99 #endif
 100
 101 // ============================================================================
 102 // implementation
 103 // ============================================================================
 104
 105 // ----------------------------------------------------------------------------
 106 // UTF-16 en/decoding to/from UCS-4
 107 // ----------------------------------------------------------------------------
 108
 109
 110 static size_t encode_utf16(wxUint32 input, wxUint16 *output)
 111 {
 112     if (input<=0xffff)
 113     {
 114         if (output) *output++ = (wxUint16) input;
 115         return 1;
 116     }
 117     else if (input>=0x110000)
 118     {
 119         return (size_t)-1;
 120     }
 121     else
 122     {
 123         if (output)
 124         {
 125             *output++ = (wxUint16) ((input >> 10)+0xd7c0);
 126             *output++ = (wxUint16) ((input&0x3ff)+0xdc00);
 127         }
 128         return 2;
 129     }
 130 }
 131
 132 static size_t decode_utf16(const wxUint16* input, wxUint32& output)
 133 {
 134     if ((*input<0xd800) || (*input>0xdfff))
 135     {
 136         output = *input;
 137         return 1;
 138     }
 139     else if ((input[1]<0xdc00) || (input[1]>=0xdfff))
 140     {
 141         output = *input;
 142         return (size_t)-1;
 143     }
 144     else
 145     {
 146         output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
 147         return 2;
 148     }
 149 }
 150
 151
 152 // ----------------------------------------------------------------------------
 153 // wxMBConv
 154 // ----------------------------------------------------------------------------
 155
 156 wxMBConv::~wxMBConv()
 157 {
 158     // nothing to do here
 159 }
 160
 161 const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
 162 {
 163     if ( psz )
 164     {
 165         // calculate the length of the buffer needed first
 166         size_t nLen = MB2WC(NULL, psz, 0);
 167         if ( nLen != (size_t)-1 )
 168         {
 169             // now do the actual conversion
 170             wxWCharBuffer buf(nLen);
 171             MB2WC(buf.data(), psz, nLen + 1); // with the trailing NUL
 172
 173             return buf;
 174         }
 175     }
 176
 177     wxWCharBuffer buf((wchar_t *)NULL);
 178
 179     return buf;
 180 }
 181
 182 const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const
 183 {
 184     if ( pwz )
 185     {
 186         size_t nLen = WC2MB(NULL, pwz, 0);
 187         if ( nLen != (size_t)-1 )
 188         {
 189             wxCharBuffer buf(nLen+3);       // space for a wxUint32 trailing zero
 190             WC2MB(buf.data(), pwz, nLen + 4);
 191
 192             return buf;
 193         }
 194     }
 195
 196     wxCharBuffer buf((char *)NULL);
 197
 198     return buf;
 199 }
 200
 201 // ----------------------------------------------------------------------------
 202 // wxMBConvLibc
 203 // ----------------------------------------------------------------------------
 204
 205 size_t wxMBConvLibc::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 206 {
 207     return wxMB2WC(buf, psz, n);
 208 }
 209
 210 size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 211 {
 212     return wxWC2MB(buf, psz, n);
 213 }
 214
 215 // ----------------------------------------------------------------------------
 216 // UTF-7
 217 // ----------------------------------------------------------------------------
 218
 219 #if 0
 220 static char utf7_setD[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 221                         "abcdefghijklmnopqrstuvwxyz"
 222                         "0123456789'(),-./:?";
 223 static char utf7_setO[]="!\"#$%&*;<=>@[]^_`{|}";
 224 static char utf7_setB[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 225                         "abcdefghijklmnopqrstuvwxyz"
 226                         "0123456789+/";
 227 #endif
 228
 229 // TODO: write actual implementations of UTF-7 here
 230 size_t wxMBConvUTF7::MB2WC(wchar_t * WXUNUSED(buf),
 231                            const char * WXUNUSED(psz),
 232                            size_t WXUNUSED(n)) const
 233 {
 234   return 0;
 235 }
 236
 237 size_t wxMBConvUTF7::WC2MB(char * WXUNUSED(buf),
 238                            const wchar_t * WXUNUSED(psz),
 239                            size_t WXUNUSED(n)) const
 240 {
 241   return 0;
 242 }
 243
 244 // ----------------------------------------------------------------------------
 245 // UTF-8
 246 // ----------------------------------------------------------------------------
 247
 248 static wxUint32 utf8_max[]=
 249     { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
 250
 251 size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 252 {
 253     size_t len = 0;
 254
 255     while (*psz && ((!buf) || (len < n)))
 256     {
 257         unsigned char cc = *psz++, fc = cc;
 258         unsigned cnt;
 259         for (cnt = 0; fc & 0x80; cnt++)
 260             fc <<= 1;
 261         if (!cnt)
 262         {
 263             // plain ASCII char
 264             if (buf)
 265                 *buf++ = cc;
 266             len++;
 267         }
 268         else
 269         {
 270             cnt--;
 271             if (!cnt)
 272             {
 273                 // invalid UTF-8 sequence
 274                 return (size_t)-1;
 275             }
 276             else
 277             {
 278                 unsigned ocnt = cnt - 1;
 279                 wxUint32 res = cc & (0x3f >> cnt);
 280                 while (cnt--)
 281                 {
 282                     cc = *psz++;
 283                     if ((cc & 0xC0) != 0x80)
 284                     {
 285                         // invalid UTF-8 sequence
 286                         return (size_t)-1;
 287                     }
 288                     res = (res << 6) | (cc & 0x3f);
 289                 }
 290                 if (res <= utf8_max[ocnt])
 291                 {
 292                     // illegal UTF-8 encoding
 293                     return (size_t)-1;
 294                 }
 295 #ifdef WC_UTF16
 296                 // cast is ok because wchar_t == wxUuint16 if WC_UTF16
 297                 size_t pa = encode_utf16(res, (wxUint16 *)buf);
 298                 if (pa == (size_t)-1)
 299                   return (size_t)-1;
 300                 if (buf)
 301                     buf += pa;
 302                 len += pa;
 303 #else // !WC_UTF16
 304                 if (buf)
 305                     *buf++ = res;
 306                 len++;
 307 #endif // WC_UTF16/!WC_UTF16
 308             }
 309         }
 310     }
 311     if (buf && (len < n))
 312         *buf = 0;
 313     return len;
 314 }
 315
 316 size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 317 {
 318     size_t len = 0;
 319
 320     while (*psz && ((!buf) || (len < n)))
 321     {
 322         wxUint32 cc;
 323 #ifdef WC_UTF16
 324         // cast is ok for WC_UTF16
 325         size_t pa = decode_utf16((const wxUint16 *)psz, cc);
 326         psz += (pa == (size_t)-1) ? 1 : pa;
 327 #else
 328         cc=(*psz++) & 0x7fffffff;
 329 #endif
 330         unsigned cnt;
 331         for (cnt = 0; cc > utf8_max[cnt]; cnt++) {}
 332         if (!cnt)
 333         {
 334             // plain ASCII char
 335             if (buf)
 336                 *buf++ = (char) cc;
 337             len++;
 338         }
 339
 340         else
 341         {
 342             len += cnt + 1;
 343             if (buf)
 344             {
 345                 *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)));
 346                 while (cnt--)
 347                     *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f));
 348             }
 349         }
 350     }
 351
 352     if (buf && (len<n)) *buf = 0;
 353
 354     return len;
 355 }
 356
 357
 358
 359
 360 // ----------------------------------------------------------------------------
 361 // UTF-16
 362 // ----------------------------------------------------------------------------
 363
 364 #ifdef WORDS_BIGENDIAN
 365     #define wxMBConvUTF16straight wxMBConvUTF16BE
 366     #define wxMBConvUTF16swap     wxMBConvUTF16LE
 367 #else
 368     #define wxMBConvUTF16swap     wxMBConvUTF16BE
 369     #define wxMBConvUTF16straight wxMBConvUTF16LE
 370 #endif
 371
 372
 373 #ifdef WC_UTF16
 374
 375 // copy 16bit MB to 16bit String
 376 size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 377 {
 378     size_t len=0;
 379
 380     while (*(wxUint16*)psz && (!buf || len < n))
 381     {
 382         if (buf)
 383             *buf++ = *(wxUint16*)psz;
 384         len++;
 385
 386         psz += sizeof(wxUint16);
 387     }
 388     if (buf && len<n)   *buf=0;
 389
 390     return len;
 391 }
 392
 393
 394 // copy 16bit String to 16bit MB
 395 size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 396 {
 397     size_t len=0;
 398
 399     while (*psz && (!buf || len < n))
 400     {
 401         if (buf)
 402         {
 403             *(wxUint16*)buf = *psz;
 404             buf += sizeof(wxUint16);
 405         }
 406         len += sizeof(wxUint16);
 407         psz++;
 408     }
 409     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 410
 411     return len;
 412 }
 413
 414
 415 // swap 16bit MB to 16bit String
 416 size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 417 {
 418     size_t len=0;
 419
 420     while (*(wxUint16*)psz && (!buf || len < n))
 421     {
 422         if (buf)
 423         {
 424             ((char *)buf)[0] = psz[1];
 425             ((char *)buf)[1] = psz[0];
 426             buf++;
 427         }
 428         len++;
 429         psz += sizeof(wxUint16);
 430     }
 431     if (buf && len<n)   *buf=0;
 432
 433     return len;
 434 }
 435
 436
 437 // swap 16bit MB to 16bit String
 438 size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 439 {
 440     size_t len=0;
 441
 442     while (*psz && (!buf || len < n))
 443     {
 444         if (buf)
 445         {
 446             *buf++ = ((char*)psz)[1];
 447             *buf++ = ((char*)psz)[0];
 448         }
 449         len += sizeof(wxUint16);
 450         psz++;
 451     }
 452     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 453
 454     return len;
 455 }
 456
 457
 458 #else // WC_UTF16
 459
 460
 461 // copy 16bit MB to 32bit String
 462 size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 463 {
 464     size_t len=0;
 465
 466     while (*(wxUint16*)psz && (!buf || len < n))
 467     {
 468         wxUint32 cc;
 469         size_t pa=decode_utf16((wxUint16*)psz, cc);
 470         if (pa == (size_t)-1)
 471             return pa;
 472
 473         if (buf)
 474             *buf++ = cc;
 475         len++;
 476         psz += pa * sizeof(wxUint16);
 477     }
 478     if (buf && len<n)   *buf=0;
 479
 480     return len;
 481 }
 482
 483
 484 // copy 32bit String to 16bit MB
 485 size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 486 {
 487     size_t len=0;
 488
 489     while (*psz && (!buf || len < n))
 490     {
 491         wxUint16 cc[2];
 492         size_t pa=encode_utf16(*psz, cc);
 493
 494         if (pa == (size_t)-1)
 495             return pa;
 496
 497         if (buf)
 498         {
 499             *(wxUint16*)buf = cc[0];
 500             buf += sizeof(wxUint16);
 501             if (pa > 1)
 502             {
 503                 *(wxUint16*)buf = cc[1];
 504                 buf += sizeof(wxUint16);
 505             }
 506         }
 507
 508         len += pa*sizeof(wxUint16);
 509         psz++;
 510     }
 511     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 512
 513     return len;
 514 }
 515
 516
 517 // swap 16bit MB to 32bit String
 518 size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 519 {
 520     size_t len=0;
 521
 522     while (*(wxUint16*)psz && (!buf || len < n))
 523     {
 524         wxUint32 cc;
 525         char tmp[4];
 526         tmp[0]=psz[1];  tmp[1]=psz[0];
 527         tmp[2]=psz[3];  tmp[3]=psz[2];
 528
 529         size_t pa=decode_utf16((wxUint16*)tmp, cc);
 530         if (pa == (size_t)-1)
 531             return pa;
 532
 533         if (buf)
 534             *buf++ = cc;
 535
 536         len++;
 537         psz += pa * sizeof(wxUint16);
 538     }
 539     if (buf && len<n)   *buf=0;
 540
 541     return len;
 542 }
 543
 544
 545 // swap 32bit String to 16bit MB
 546 size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 547 {
 548     size_t len=0;
 549
 550     while (*psz && (!buf || len < n))
 551     {
 552         wxUint16 cc[2];
 553         size_t pa=encode_utf16(*psz, cc);
 554
 555         if (pa == (size_t)-1)
 556             return pa;
 557
 558         if (buf)
 559         {
 560             *buf++ = ((char*)cc)[1];
 561             *buf++ = ((char*)cc)[0];
 562             if (pa > 1)
 563             {
 564                 *buf++ = ((char*)cc)[3];
 565                 *buf++ = ((char*)cc)[2];
 566             }
 567         }
 568
 569         len += pa*sizeof(wxUint16);
 570         psz++;
 571     }
 572     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 573
 574     return len;
 575 }
 576
 577 #endif // WC_UTF16
 578
 579
 580 // ----------------------------------------------------------------------------
 581 // UTF-32
 582 // ----------------------------------------------------------------------------
 583
 584 #ifdef WORDS_BIGENDIAN
 585 #define wxMBConvUTF32straight  wxMBConvUTF32BE
 586 #define wxMBConvUTF32swap      wxMBConvUTF32LE
 587 #else
 588 #define wxMBConvUTF32swap      wxMBConvUTF32BE
 589 #define wxMBConvUTF32straight  wxMBConvUTF32LE
 590 #endif
 591
 592
 593 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32LE) wxConvUTF32LE;
 594 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32BE) wxConvUTF32BE;
 595
 596
 597 #ifdef WC_UTF16
 598
 599 // copy 32bit MB to 16bit String
 600 size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 601 {
 602     size_t len=0;
 603
 604     while (*(wxUint32*)psz && (!buf || len < n))
 605     {
 606         wxUint16 cc[2];
 607
 608         size_t pa=encode_utf16(*(wxUint32*)psz, cc);
 609         if (pa == (size_t)-1)
 610             return pa;
 611
 612         if (buf)
 613         {
 614             *buf++ = cc[0];
 615             if (pa > 1)
 616                 *buf++ = cc[1];
 617         }
 618         len += pa;
 619         psz += sizeof(wxUint32);
 620     }
 621     if (buf && len<n)   *buf=0;
 622
 623     return len;
 624 }
 625
 626
 627 // copy 16bit String to 32bit MB
 628 size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 629 {
 630     size_t len=0;
 631
 632     while (*psz && (!buf || len < n))
 633     {
 634         wxUint32 cc;
 635
 636         // cast is ok for WC_UTF16
 637         size_t pa = decode_utf16((const wxUint16 *)psz, cc);
 638         if (pa == (size_t)-1)
 639             return pa;
 640
 641         if (buf)
 642         {
 643             *(wxUint32*)buf = cc;
 644             buf += sizeof(wxUint32);
 645         }
 646         len += sizeof(wxUint32);
 647         psz += pa;
 648     }
 649
 650     if (buf && len<=n-sizeof(wxUint32))
 651         *(wxUint32*)buf=0;
 652
 653     return len;
 654 }
 655
 656
 657
 658 // swap 32bit MB to 16bit String
 659 size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 660 {
 661     size_t len=0;
 662
 663     while (*(wxUint32*)psz && (!buf || len < n))
 664     {
 665         char tmp[4];
 666         tmp[0] = psz[3];   tmp[1] = psz[2];
 667         tmp[2] = psz[1];   tmp[3] = psz[0];
 668
 669
 670         wxUint16 cc[2];
 671
 672         size_t pa=encode_utf16(*(wxUint32*)tmp, cc);
 673         if (pa == (size_t)-1)
 674             return pa;
 675
 676         if (buf)
 677         {
 678             *buf++ = cc[0];
 679             if (pa > 1)
 680                 *buf++ = cc[1];
 681         }
 682         len += pa;
 683         psz += sizeof(wxUint32);
 684     }
 685
 686     if (buf && len<n)
 687         *buf=0;
 688
 689     return len;
 690 }
 691
 692
 693 // swap 16bit String to 32bit MB
 694 size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 695 {
 696     size_t len=0;
 697
 698     while (*psz && (!buf || len < n))
 699     {
 700         char cc[4];
 701
 702         // cast is ok for WC_UTF16
 703         size_t pa=decode_utf16((const wxUint16 *)psz, *(wxUint32*)cc);
 704         if (pa == (size_t)-1)
 705             return pa;
 706
 707         if (buf)
 708         {
 709             *buf++ = cc[3];
 710             *buf++ = cc[2];
 711             *buf++ = cc[1];
 712             *buf++ = cc[0];
 713         }
 714         len += sizeof(wxUint32);
 715         psz += pa;
 716     }
 717
 718     if (buf && len<=n-sizeof(wxUint32))
 719         *(wxUint32*)buf=0;
 720
 721     return len;
 722 }
 723
 724 #else // WC_UTF16
 725
 726
 727 // copy 32bit MB to 32bit String
 728 size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 729 {
 730     size_t len=0;
 731
 732     while (*(wxUint32*)psz && (!buf || len < n))
 733     {
 734         if (buf)
 735             *buf++ = *(wxUint32*)psz;
 736         len++;
 737         psz += sizeof(wxUint32);
 738     }
 739
 740     if (buf && len<n)
 741         *buf=0;
 742
 743     return len;
 744 }
 745
 746
 747 // copy 32bit String to 32bit MB
 748 size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 749 {
 750     size_t len=0;
 751
 752     while (*psz && (!buf || len < n))
 753     {
 754         if (buf)
 755         {
 756             *(wxUint32*)buf = *psz;
 757             buf += sizeof(wxUint32);
 758         }
 759
 760         len += sizeof(wxUint32);
 761         psz++;
 762     }
 763
 764     if (buf && len<=n-sizeof(wxUint32))
 765         *(wxUint32*)buf=0;
 766
 767     return len;
 768 }
 769
 770
 771 // swap 32bit MB to 32bit String
 772 size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 773 {
 774     size_t len=0;
 775
 776     while (*(wxUint32*)psz && (!buf || len < n))
 777     {
 778         if (buf)
 779         {
 780             ((char *)buf)[0] = psz[3];
 781             ((char *)buf)[1] = psz[2];
 782             ((char *)buf)[2] = psz[1];
 783             ((char *)buf)[3] = psz[0];
 784             buf++;
 785         }
 786         len++;
 787         psz += sizeof(wxUint32);
 788     }
 789
 790     if (buf && len<n)
 791         *buf=0;
 792
 793     return len;
 794 }
 795
 796
 797 // swap 32bit String to 32bit MB
 798 size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 799 {
 800     size_t len=0;
 801
 802     while (*psz && (!buf || len < n))
 803     {
 804         if (buf)
 805         {
 806             *buf++ = ((char *)psz)[3];
 807             *buf++ = ((char *)psz)[2];
 808             *buf++ = ((char *)psz)[1];
 809             *buf++ = ((char *)psz)[0];
 810         }
 811         len += sizeof(wxUint32);
 812         psz++;
 813     }
 814
 815     if (buf && len<=n-sizeof(wxUint32))
 816         *(wxUint32*)buf=0;
 817
 818     return len;
 819 }
 820
 821
 822 #endif // WC_UTF16
 823
 824
 825 // ============================================================================
 826 // The classes doing conversion using the iconv_xxx() functions
 827 // ============================================================================
 828
 829 #ifdef HAVE_ICONV
 830
 831 // VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with E2BIG
 832 //     if output buffer is _exactly_ as big as needed. Such case is (unless there's
 833 //     yet another bug in glibc) the only case when iconv() returns with (size_t)-1
 834 //     (which means error) and says there are 0 bytes left in the input buffer --
 835 //     when _real_ error occurs, bytes-left-in-input buffer is non-zero. Hence,
 836 //     this alternative test for iconv() failure.
 837 //     [This bug does not appear in glibc 2.2.]
 838 #if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
 839 #define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \
 840                                      (errno != E2BIG || bufLeft != 0))
 841 #else
 842 #define ICONV_FAILED(cres, bufLeft)  (cres == (size_t)-1)
 843 #endif
 844
 845 #define ICONV_CHAR_CAST(x)  ((ICONV_CONST char **)(x))
 846
 847 // ----------------------------------------------------------------------------
 848 // wxMBConv_iconv: encapsulates an iconv character set
 849 // ----------------------------------------------------------------------------
 850
 851 class wxMBConv_iconv : public wxMBConv
 852 {
 853 public:
 854     wxMBConv_iconv(const wxChar *name);
 855     virtual ~wxMBConv_iconv();
 856
 857     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 858     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 859
 860     bool IsOk() const
 861         { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
 862
 863 protected:
 864     // the iconv handlers used to translate from multibyte to wide char and in
 865     // the other direction
 866     iconv_t m2w,
 867             w2m;
 868
 869 private:
 870     // the name (for iconv_open()) of a wide char charset -- if none is
 871     // available on this machine, it will remain NULL
 872     static const char *ms_wcCharsetName;
 873
 874     // true if the wide char encoding we use (i.e. ms_wcCharsetName) has
 875     // different endian-ness than the native one
 876     static bool ms_wcNeedsSwap;
 877 };
 878
 879 const char *wxMBConv_iconv::ms_wcCharsetName = NULL;
 880 bool wxMBConv_iconv::ms_wcNeedsSwap = false;
 881
 882 wxMBConv_iconv::wxMBConv_iconv(const wxChar *name)
 883 {
 884     // Do it the hard way
 885     char cname[100];
 886     for (size_t i = 0; i < wxStrlen(name)+1; i++)
 887         cname[i] = (char) name[i];
 888
 889     // check for charset that represents wchar_t:
 890     if (ms_wcCharsetName == NULL)
 891     {
 892         ms_wcNeedsSwap = false;
 893
 894         // try charset with explicit bytesex info (e.g. "UCS-4LE"):
 895         ms_wcCharsetName = WC_NAME_BEST;
 896         m2w = iconv_open(ms_wcCharsetName, cname);
 897
 898         if (m2w == (iconv_t)-1)
 899         {
 900             // try charset w/o bytesex info (e.g. "UCS4")
 901             // and check for bytesex ourselves:
 902             ms_wcCharsetName = WC_NAME;
 903             m2w = iconv_open(ms_wcCharsetName, cname);
 904
 905             // last bet, try if it knows WCHAR_T pseudo-charset
 906             if (m2w == (iconv_t)-1)
 907             {
 908                 ms_wcCharsetName = "WCHAR_T";
 909                 m2w = iconv_open(ms_wcCharsetName, cname);
 910             }
 911
 912             if (m2w != (iconv_t)-1)
 913             {
 914                 char    buf[2], *bufPtr;
 915                 wchar_t wbuf[2], *wbufPtr;
 916                 size_t  insz, outsz;
 917                 size_t  res;
 918
 919                 buf[0] = 'A';
 920                 buf[1] = 0;
 921                 wbuf[0] = 0;
 922                 insz = 2;
 923                 outsz = SIZEOF_WCHAR_T * 2;
 924                 wbufPtr = wbuf;
 925                 bufPtr = buf;
 926
 927                 res = iconv(m2w, ICONV_CHAR_CAST(&bufPtr), &insz,
 928                             (char**)&wbufPtr, &outsz);
 929
 930                 if (ICONV_FAILED(res, insz))
 931                 {
 932                     ms_wcCharsetName = NULL;
 933                     wxLogLastError(wxT("iconv"));
 934                     wxLogError(_("Conversion to charset '%s' doesn't work."), name);
 935                 }
 936                 else
 937                 {
 938                     ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0];
 939                 }
 940             }
 941             else
 942             {
 943                 ms_wcCharsetName = NULL;
 944
 945                 // VS: we must not output an error here, since wxWindows will safely
 946                 //     fall back to using wxEncodingConverter.
 947                 wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name);
 948                 //wxLogError(
 949             }
 950         }
 951         wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), ms_wcCharsetName, ms_wcNeedsSwap);
 952     }
 953     else // we already have ms_wcCharsetName
 954     {
 955         m2w = iconv_open(ms_wcCharsetName, cname);
 956     }
 957
 958     // NB: don't ever pass NULL to iconv_open(), it may crash!
 959     if ( ms_wcCharsetName )
 960     {
 961         w2m = iconv_open( cname, ms_wcCharsetName);
 962     }
 963     else
 964     {
 965         w2m = (iconv_t)-1;
 966     }
 967 }
 968
 969 wxMBConv_iconv::~wxMBConv_iconv()
 970 {
 971     if ( m2w != (iconv_t)-1 )
 972         iconv_close(m2w);
 973     if ( w2m != (iconv_t)-1 )
 974         iconv_close(w2m);
 975 }
 976
 977 size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 978 {
 979     size_t inbuf = strlen(psz);
 980     size_t outbuf = n * SIZEOF_WCHAR_T;
 981     size_t res, cres;
 982     // VS: Use these instead of psz, buf because iconv() modifies its arguments:
 983     wchar_t *bufPtr = buf;
 984     const char *pszPtr = psz;
 985
 986     if (buf)
 987     {
 988         // have destination buffer, convert there
 989         cres = iconv(m2w,
 990                      ICONV_CHAR_CAST(&pszPtr), &inbuf,
 991                      (char**)&bufPtr, &outbuf);
 992         res = n - (outbuf / SIZEOF_WCHAR_T);
 993
 994         if (ms_wcNeedsSwap)
 995         {
 996             // convert to native endianness
 997             WC_BSWAP(buf /* _not_ bufPtr */, res)
 998         }
 999
1000         // NB: iconv was given only strlen(psz) characters on input, and so
1001         //     it couldn't convert the trailing zero. Let's do it ourselves
1002         //     if there's some room left for it in the output buffer.
1003         if (res < n)
1004             buf[res] = 0;
1005     }
1006     else
1007     {
1008         // no destination buffer... convert using temp buffer
1009         // to calculate destination buffer requirement
1010         wchar_t tbuf[8];
1011         res = 0;
1012         do {
1013             bufPtr = tbuf;
1014             outbuf = 8*SIZEOF_WCHAR_T;
1015
1016             cres = iconv(m2w,
1017                          ICONV_CHAR_CAST(&pszPtr), &inbuf,
1018                          (char**)&bufPtr, &outbuf );
1019
1020             res += 8-(outbuf/SIZEOF_WCHAR_T);
1021         } while ((cres==(size_t)-1) && (errno==E2BIG));
1022     }
1023
1024     if (ICONV_FAILED(cres, inbuf))
1025     {
1026         //VS: it is ok if iconv fails, hence trace only
1027         wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
1028         return (size_t)-1;
1029     }
1030
1031     return res;
1032 }
1033
1034 size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1035 {
1036     size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
1037     size_t outbuf = n;
1038     size_t res, cres;
1039
1040     wchar_t *tmpbuf = 0;
1041
1042     if (ms_wcNeedsSwap)
1043     {
1044         // need to copy to temp buffer to switch endianness
1045         // this absolutely doesn't rock!
1046         // (no, doing WC_BSWAP twice on the original buffer won't help, as it
1047         //  could be in read-only memory, or be accessed in some other thread)
1048         tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
1049         memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
1050         WC_BSWAP(tmpbuf, inbuf)
1051         psz=tmpbuf;
1052     }
1053
1054     if (buf)
1055     {
1056         // have destination buffer, convert there
1057         cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
1058
1059         res = n-outbuf;
1060
1061         // NB: iconv was given only wcslen(psz) characters on input, and so
1062         //     it couldn't convert the trailing zero. Let's do it ourselves
1063         //     if there's some room left for it in the output buffer.
1064         if (res < n)
1065             buf[0] = 0;
1066     }
1067     else
1068     {
1069         // no destination buffer... convert using temp buffer
1070         // to calculate destination buffer requirement
1071         char tbuf[16];
1072         res = 0;
1073         do {
1074             buf = tbuf; outbuf = 16;
1075
1076             cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
1077
1078             res += 16 - outbuf;
1079         } while ((cres==(size_t)-1) && (errno==E2BIG));
1080     }
1081
1082     if (ms_wcNeedsSwap)
1083     {
1084         free(tmpbuf);
1085     }
1086
1087     if (ICONV_FAILED(cres, inbuf))
1088     {
1089         //VS: it is ok if iconv fails, hence trace only
1090         wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
1091         return (size_t)-1;
1092     }
1093
1094     return res;
1095 }
1096
1097 #endif // HAVE_ICONV
1098
1099
1100 // ============================================================================
1101 // Win32 conversion classes
1102 // ============================================================================
1103
1104 #ifdef wxHAVE_WIN32_MB2WC
1105
1106 // from utils.cpp
1107 extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const wxChar *charset);
1108 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
1109
1110 class wxMBConv_win32 : public wxMBConv
1111 {
1112 public:
1113     wxMBConv_win32()
1114     {
1115         m_CodePage = CP_ACP;
1116     }
1117
1118     wxMBConv_win32(const wxChar* name)
1119     {
1120         m_CodePage = wxCharsetToCodepage(name);
1121     }
1122
1123     wxMBConv_win32(wxFontEncoding encoding)
1124     {
1125         m_CodePage = wxEncodingToCodepage(encoding);
1126     }
1127
1128     size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const
1129     {
1130         const size_t len = ::MultiByteToWideChar
1131                              (
1132                                 m_CodePage,     // code page
1133                                 0,              // flags (none)
1134                                 psz,            // input string
1135                                 -1,             // its length (NUL-terminated)
1136                                 buf,            // output string
1137                                 buf ? n : 0     // size of output buffer
1138                              );
1139
1140         // note that it returns count of written chars for buf != NULL and size
1141         // of the needed buffer for buf == NULL so in either case the length of
1142         // the string (which never includes the terminating NUL) is one less
1143         return len ? len - 1 : (size_t)-1;
1144     }
1145
1146     size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const
1147     {
1148         const size_t len = ::WideCharToMultiByte
1149                              (
1150                                 m_CodePage,     // code page
1151                                 0,              // flags (none)
1152                                 psz,            // input string
1153                                 -1,             // it is (wide) NUL-terminated
1154                                 buf,            // output buffer
1155                                 buf ? n : 0,    // and its size
1156                                 NULL,           // default "replacement" char
1157                                 NULL            // [out] was it used?
1158                              );
1159
1160         // see the comment above for the reason of "len - 1"
1161         return len ? len - 1 : (size_t)-1;
1162     }
1163
1164     bool IsOk() const
1165         { return m_CodePage != -1; }
1166
1167 public:
1168     long m_CodePage;
1169 };
1170
1171 #endif // wxHAVE_WIN32_MB2WC
1172
1173
1174 // ============================================================================
1175 // wxEncodingConverter based conversion classes
1176 // ============================================================================
1177
1178 #if wxUSE_FONTMAP
1179
1180 class wxMBConv_wxwin : public wxMBConv
1181 {
1182 private:
1183     void Init()
1184     {
1185         m_ok = m2w.Init(m_enc, wxFONTENCODING_UNICODE) &&
1186                w2m.Init(wxFONTENCODING_UNICODE, m_enc);
1187     }
1188
1189 public:
1190     // temporarily just use wxEncodingConverter stuff,
1191     // so that it works while a better implementation is built
1192     wxMBConv_wxwin(const wxChar* name)
1193     {
1194         if (name)
1195             m_enc = wxFontMapper::Get()->CharsetToEncoding(name, false);
1196         else
1197             m_enc = wxFONTENCODING_SYSTEM;
1198
1199         Init();
1200     }
1201
1202     wxMBConv_wxwin(wxFontEncoding enc)
1203     {
1204         m_enc = enc;
1205
1206         Init();
1207     }
1208
1209     size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) const
1210     {
1211         size_t inbuf = strlen(psz);
1212         if (buf)
1213             m2w.Convert(psz,buf);
1214         return inbuf;
1215     }
1216
1217     size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) const
1218     {
1219         const size_t inbuf = wxWcslen(psz);
1220         if (buf)
1221             w2m.Convert(psz,buf);
1222
1223         return inbuf;
1224     }
1225
1226     bool IsOk() const { return m_ok; }
1227
1228 public:
1229     wxFontEncoding m_enc;
1230     wxEncodingConverter m2w, w2m;
1231
1232     // were we initialized successfully?
1233     bool m_ok;
1234
1235     DECLARE_NO_COPY_CLASS(wxMBConv_wxwin)
1236 };
1237
1238 #endif // wxUSE_FONTMAP
1239
1240 // ============================================================================
1241 // wxCSConv implementation
1242 // ============================================================================
1243
1244 void wxCSConv::Init()
1245 {
1246     m_name = NULL;
1247     m_convReal =  NULL;
1248     m_deferred = true;
1249 }
1250
1251 wxCSConv::wxCSConv(const wxChar *charset)
1252 {
1253     Init();
1254
1255     if ( charset )
1256     {
1257         SetName(charset);
1258     }
1259
1260     m_encoding = wxFONTENCODING_SYSTEM;
1261 }
1262
1263 wxCSConv::wxCSConv(wxFontEncoding encoding)
1264 {
1265     if ( encoding == wxFONTENCODING_MAX || encoding == wxFONTENCODING_DEFAULT )
1266     {
1267         wxFAIL_MSG( _T("invalid encoding value in wxCSConv ctor") );
1268
1269         encoding = wxFONTENCODING_SYSTEM;
1270     }
1271
1272     Init();
1273
1274     m_encoding = encoding;
1275 }
1276
1277 wxCSConv::~wxCSConv()
1278 {
1279     Clear();
1280 }
1281
1282 wxCSConv::wxCSConv(const wxCSConv& conv)
1283         : wxMBConv()
1284 {
1285     Init();
1286
1287     SetName(conv.m_name);
1288     m_encoding = conv.m_encoding;
1289 }
1290
1291 wxCSConv& wxCSConv::operator=(const wxCSConv& conv)
1292 {
1293     Clear();
1294
1295     SetName(conv.m_name);
1296     m_encoding = conv.m_encoding;
1297
1298     return *this;
1299 }
1300
1301 void wxCSConv::Clear()
1302 {
1303     free(m_name);
1304     delete m_convReal;
1305
1306     m_name = NULL;
1307     m_convReal = NULL;
1308 }
1309
1310 void wxCSConv::SetName(const wxChar *charset)
1311 {
1312     if (charset)
1313     {
1314         m_name = wxStrdup(charset);
1315         m_deferred = true;
1316     }
1317 }
1318
1319 static inline bool DoesntNeedConv(wxFontEncoding enc)
1320 {
1321     return enc == wxFONTENCODING_DEFAULT ||
1322             enc == wxFONTENCODING_SYSTEM ||
1323              enc == wxFONTENCODING_ISO8859_1;
1324 }
1325
1326 wxMBConv *wxCSConv::DoCreate() const
1327 {
1328 #if wxUSE_FONTMAP
1329     wxFontMapper * const fontMapper = wxFontMapper::Get();
1330
1331     wxFontEncoding encFromName = m_name ? fontMapper->CharsetToEncoding(m_name)
1332                                         : wxFONTENCODING_SYSTEM;
1333 #endif // wxUSE_FONTMAP
1334
1335     // check for the special case of ASCII charset
1336     if ( (!m_name && DoesntNeedConv(m_encoding))
1337 #if wxUSE_FONTMAP
1338             || (m_name && DoesntNeedConv(encFromName))
1339 #endif // wxUSE_FONTMAP
1340        )
1341     {
1342         // don't convert at all
1343         return NULL;
1344     }
1345
1346     // we trust OS to do conversion better than we can so try external
1347     // conversion methods first
1348     //
1349     // the full order is:
1350     //      1. OS conversion (iconv() under Unix or Win32 API)
1351     //      2. hard coded conversions for UTF
1352     //      3. wxEncodingConverter as fall back
1353
1354     // step (1)
1355 #ifdef HAVE_ICONV
1356     if ( m_name )
1357     {
1358         wxMBConv_iconv *conv = new wxMBConv_iconv(m_name);
1359         if ( conv->IsOk() )
1360             return conv;
1361
1362         delete conv;
1363     }
1364 #endif // HAVE_ICONV
1365
1366 #ifdef wxHAVE_WIN32_MB2WC
1367     {
1368         wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name)
1369                                       : new wxMBConv_win32(m_encoding);
1370         if ( conv->IsOk() )
1371             return conv;
1372
1373         delete conv;
1374     }
1375 #endif // wxHAVE_WIN32_MB2WC
1376
1377     // step (2)
1378     wxFontEncoding enc = m_encoding;
1379 #if wxUSE_FONTMAP
1380     if ( enc == wxFONTENCODING_SYSTEM )
1381         enc = encFromName;
1382 #endif // wxUSE_FONTMAP
1383
1384     switch ( enc )
1385     {
1386         case wxFONTENCODING_UTF7:
1387              return new wxMBConvUTF7;
1388
1389         case wxFONTENCODING_UTF8:
1390              return new wxMBConvUTF8;
1391
1392         case wxFONTENCODING_UTF16BE:
1393              return new wxMBConvUTF16BE;
1394
1395         case wxFONTENCODING_UTF16LE:
1396              return new wxMBConvUTF16LE;
1397
1398         case wxFONTENCODING_UTF32BE:
1399              return new wxMBConvUTF32BE;
1400
1401         case wxFONTENCODING_UTF32LE:
1402              return new wxMBConvUTF32LE;
1403
1404         default:
1405              // nothing to do but put here to suppress gcc warnings
1406              ;
1407     }
1408
1409     // step (3)
1410 #if wxUSE_FONTMAP
1411     {
1412         wxMBConv_wxwin *conv = m_name ? new wxMBConv_wxwin(m_name)
1413                                       : new wxMBConv_wxwin(m_encoding);
1414         if ( conv->IsOk() )
1415             return conv;
1416
1417         delete conv;
1418     }
1419 #endif // wxUSE_FONTMAP
1420
1421     wxLogError(_("Cannot convert from the charset '%s'!"),
1422                m_name ? m_name
1423                       :
1424 #if wxUSE_FONTMAP
1425                          wxFontMapper::GetEncodingDescription(m_encoding).c_str()
1426 #else // !wxUSE_FONTMAP
1427                          wxString::Format(_("encoding %s"), m_encoding).c_str()
1428 #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
1429               );
1430
1431     return NULL;
1432 }
1433
1434 void wxCSConv::CreateConvIfNeeded() const
1435 {
1436     if ( m_deferred )
1437     {
1438         wxCSConv *self = (wxCSConv *)this; // const_cast
1439
1440 #if wxUSE_INTL
1441         // if we don't have neither the name nor the encoding, use the default
1442         // encoding for this system
1443         if ( !m_name && m_encoding == wxFONTENCODING_SYSTEM )
1444         {
1445             self->m_encoding = wxLocale::GetSystemEncoding();
1446         }
1447 #endif // wxUSE_INTL
1448
1449         self->m_convReal = DoCreate();
1450         self->m_deferred = false;
1451     }
1452 }
1453
1454 size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
1455 {
1456     CreateConvIfNeeded();
1457
1458     if (m_convReal)
1459         return m_convReal->MB2WC(buf, psz, n);
1460
1461     // latin-1 (direct)
1462     size_t len = strlen(psz);
1463
1464     if (buf)
1465     {
1466         for (size_t c = 0; c <= len; c++)
1467             buf[c] = (unsigned char)(psz[c]);
1468     }
1469
1470     return len;
1471 }
1472
1473 size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1474 {
1475     CreateConvIfNeeded();
1476
1477     if (m_convReal)
1478         return m_convReal->WC2MB(buf, psz, n);
1479
1480     // latin-1 (direct)
1481     const size_t len = wxWcslen(psz);
1482     if (buf)
1483     {
1484         for (size_t c = 0; c <= len; c++)
1485             buf[c] = (psz[c] > 0xff) ? '?' : psz[c];
1486     }
1487
1488     return len;
1489 }
1490
1491 // ----------------------------------------------------------------------------
1492 // globals
1493 // ----------------------------------------------------------------------------
1494
1495 #ifdef __WINDOWS__
1496     static wxMBConv_win32 wxConvLibcObj;
1497 #else
1498     static wxMBConvLibc wxConvLibcObj;
1499 #endif
1500
1501 static wxCSConv wxConvLocalObj(wxFONTENCODING_SYSTEM);
1502 static wxCSConv wxConvISO8859_1Obj(wxFONTENCODING_ISO8859_1);
1503 static wxMBConvUTF7 wxConvUTF7Obj;
1504 static wxMBConvUTF8 wxConvUTF8Obj;
1505
1506
1507 WXDLLIMPEXP_DATA_BASE(wxMBConv&) wxConvLibc = wxConvLibcObj;
1508 WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvLocal = wxConvLocalObj;
1509 WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvISO8859_1 = wxConvISO8859_1Obj;
1510 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7&) wxConvUTF7 = wxConvUTF7Obj;
1511 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8&) wxConvUTF8 = wxConvUTF8Obj;
1512 WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibcObj;
1513
1514 #else // !wxUSE_WCHAR_T
1515
1516 // stand-ins in absence of wchar_t
1517 WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc,
1518                                 wxConvISO8859_1,
1519                                 wxConvLocal,
1520                                 wxConvUTF8;
1521
1522 #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
1523
1524