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)
 115             *output = (wxUint16) input;
 116         return 1;
 117     }
 118     else if (input>=0x110000)
 119     {
 120         return (size_t)-1;
 121     }
 122     else
 123     {
 124         if (output)
 125         {
 126             *output++ = (wxUint16) ((input >> 10)+0xd7c0);
 127             *output = (wxUint16) ((input&0x3ff)+0xdc00);
 128         }
 129         return 2;
 130     }
 131 }
 132
 133 static size_t decode_utf16(const wxUint16* input, wxUint32& output)
 134 {
 135     if ((*input<0xd800) || (*input>0xdfff))
 136     {
 137         output = *input;
 138         return 1;
 139     }
 140     else if ((input[1]<0xdc00) || (input[1]>=0xdfff))
 141     {
 142         output = *input;
 143         return (size_t)-1;
 144     }
 145     else
 146     {
 147         output = ((input[0] - 0xd7c0) << 10) + (input[1] - 0xdc00);
 148         return 2;
 149     }
 150 }
 151
 152
 153 // ----------------------------------------------------------------------------
 154 // wxMBConv
 155 // ----------------------------------------------------------------------------
 156
 157 wxMBConv::~wxMBConv()
 158 {
 159     // nothing to do here
 160 }
 161
 162 const wxWCharBuffer wxMBConv::cMB2WC(const char *psz) const
 163 {
 164     if ( psz )
 165     {
 166         // calculate the length of the buffer needed first
 167         size_t nLen = MB2WC(NULL, psz, 0);
 168         if ( nLen != (size_t)-1 )
 169         {
 170             // now do the actual conversion
 171             wxWCharBuffer buf(nLen);
 172             MB2WC(buf.data(), psz, nLen + 1); // with the trailing NUL
 173
 174             return buf;
 175         }
 176     }
 177
 178     wxWCharBuffer buf((wchar_t *)NULL);
 179
 180     return buf;
 181 }
 182
 183 const wxCharBuffer wxMBConv::cWC2MB(const wchar_t *pwz) const
 184 {
 185     if ( pwz )
 186     {
 187         size_t nLen = WC2MB(NULL, pwz, 0);
 188         if ( nLen != (size_t)-1 )
 189         {
 190             wxCharBuffer buf(nLen+3);       // space for a wxUint32 trailing zero
 191             WC2MB(buf.data(), pwz, nLen + 4);
 192
 193             return buf;
 194         }
 195     }
 196
 197     wxCharBuffer buf((char *)NULL);
 198
 199     return buf;
 200 }
 201
 202 // ----------------------------------------------------------------------------
 203 // wxMBConvLibc
 204 // ----------------------------------------------------------------------------
 205
 206 size_t wxMBConvLibc::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 207 {
 208     return wxMB2WC(buf, psz, n);
 209 }
 210
 211 size_t wxMBConvLibc::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 212 {
 213     return wxWC2MB(buf, psz, n);
 214 }
 215
 216 // ----------------------------------------------------------------------------
 217 // UTF-7
 218 // ----------------------------------------------------------------------------
 219
 220 #if 0
 221 static char utf7_setD[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 222                         "abcdefghijklmnopqrstuvwxyz"
 223                         "0123456789'(),-./:?";
 224 static char utf7_setO[]="!\"#$%&*;<=>@[]^_`{|}";
 225 static char utf7_setB[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 226                         "abcdefghijklmnopqrstuvwxyz"
 227                         "0123456789+/";
 228 #endif
 229
 230 // TODO: write actual implementations of UTF-7 here
 231 size_t wxMBConvUTF7::MB2WC(wchar_t * WXUNUSED(buf),
 232                            const char * WXUNUSED(psz),
 233                            size_t WXUNUSED(n)) const
 234 {
 235   return 0;
 236 }
 237
 238 size_t wxMBConvUTF7::WC2MB(char * WXUNUSED(buf),
 239                            const wchar_t * WXUNUSED(psz),
 240                            size_t WXUNUSED(n)) const
 241 {
 242   return 0;
 243 }
 244
 245 // ----------------------------------------------------------------------------
 246 // UTF-8
 247 // ----------------------------------------------------------------------------
 248
 249 static wxUint32 utf8_max[]=
 250     { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff, 0xffffffff };
 251
 252 size_t wxMBConvUTF8::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 253 {
 254     size_t len = 0;
 255
 256     while (*psz && ((!buf) || (len < n)))
 257     {
 258         unsigned char cc = *psz++, fc = cc;
 259         unsigned cnt;
 260         for (cnt = 0; fc & 0x80; cnt++)
 261             fc <<= 1;
 262         if (!cnt)
 263         {
 264             // plain ASCII char
 265             if (buf)
 266                 *buf++ = cc;
 267             len++;
 268         }
 269         else
 270         {
 271             cnt--;
 272             if (!cnt)
 273             {
 274                 // invalid UTF-8 sequence
 275                 return (size_t)-1;
 276             }
 277             else
 278             {
 279                 unsigned ocnt = cnt - 1;
 280                 wxUint32 res = cc & (0x3f >> cnt);
 281                 while (cnt--)
 282                 {
 283                     cc = *psz++;
 284                     if ((cc & 0xC0) != 0x80)
 285                     {
 286                         // invalid UTF-8 sequence
 287                         return (size_t)-1;
 288                     }
 289                     res = (res << 6) | (cc & 0x3f);
 290                 }
 291                 if (res <= utf8_max[ocnt])
 292                 {
 293                     // illegal UTF-8 encoding
 294                     return (size_t)-1;
 295                 }
 296 #ifdef WC_UTF16
 297                 // cast is ok because wchar_t == wxUuint16 if WC_UTF16
 298                 size_t pa = encode_utf16(res, (wxUint16 *)buf);
 299                 if (pa == (size_t)-1)
 300                   return (size_t)-1;
 301                 if (buf)
 302                     buf += pa;
 303                 len += pa;
 304 #else // !WC_UTF16
 305                 if (buf)
 306                     *buf++ = res;
 307                 len++;
 308 #endif // WC_UTF16/!WC_UTF16
 309             }
 310         }
 311     }
 312     if (buf && (len < n))
 313         *buf = 0;
 314     return len;
 315 }
 316
 317 size_t wxMBConvUTF8::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 318 {
 319     size_t len = 0;
 320
 321     while (*psz && ((!buf) || (len < n)))
 322     {
 323         wxUint32 cc;
 324 #ifdef WC_UTF16
 325         // cast is ok for WC_UTF16
 326         size_t pa = decode_utf16((const wxUint16 *)psz, cc);
 327         psz += (pa == (size_t)-1) ? 1 : pa;
 328 #else
 329         cc=(*psz++) & 0x7fffffff;
 330 #endif
 331         unsigned cnt;
 332         for (cnt = 0; cc > utf8_max[cnt]; cnt++) {}
 333         if (!cnt)
 334         {
 335             // plain ASCII char
 336             if (buf)
 337                 *buf++ = (char) cc;
 338             len++;
 339         }
 340
 341         else
 342         {
 343             len += cnt + 1;
 344             if (buf)
 345             {
 346                 *buf++ = (char) ((-128 >> cnt) | ((cc >> (cnt * 6)) & (0x3f >> cnt)));
 347                 while (cnt--)
 348                     *buf++ = (char) (0x80 | ((cc >> (cnt * 6)) & 0x3f));
 349             }
 350         }
 351     }
 352
 353     if (buf && (len<n)) *buf = 0;
 354
 355     return len;
 356 }
 357
 358
 359
 360
 361 // ----------------------------------------------------------------------------
 362 // UTF-16
 363 // ----------------------------------------------------------------------------
 364
 365 #ifdef WORDS_BIGENDIAN
 366     #define wxMBConvUTF16straight wxMBConvUTF16BE
 367     #define wxMBConvUTF16swap     wxMBConvUTF16LE
 368 #else
 369     #define wxMBConvUTF16swap     wxMBConvUTF16BE
 370     #define wxMBConvUTF16straight wxMBConvUTF16LE
 371 #endif
 372
 373
 374 #ifdef WC_UTF16
 375
 376 // copy 16bit MB to 16bit String
 377 size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 378 {
 379     size_t len=0;
 380
 381     while (*(wxUint16*)psz && (!buf || len < n))
 382     {
 383         if (buf)
 384             *buf++ = *(wxUint16*)psz;
 385         len++;
 386
 387         psz += sizeof(wxUint16);
 388     }
 389     if (buf && len<n)   *buf=0;
 390
 391     return len;
 392 }
 393
 394
 395 // copy 16bit String to 16bit MB
 396 size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 397 {
 398     size_t len=0;
 399
 400     while (*psz && (!buf || len < n))
 401     {
 402         if (buf)
 403         {
 404             *(wxUint16*)buf = *psz;
 405             buf += sizeof(wxUint16);
 406         }
 407         len += sizeof(wxUint16);
 408         psz++;
 409     }
 410     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 411
 412     return len;
 413 }
 414
 415
 416 // swap 16bit MB to 16bit String
 417 size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 418 {
 419     size_t len=0;
 420
 421     while (*(wxUint16*)psz && (!buf || len < n))
 422     {
 423         if (buf)
 424         {
 425             ((char *)buf)[0] = psz[1];
 426             ((char *)buf)[1] = psz[0];
 427             buf++;
 428         }
 429         len++;
 430         psz += sizeof(wxUint16);
 431     }
 432     if (buf && len<n)   *buf=0;
 433
 434     return len;
 435 }
 436
 437
 438 // swap 16bit MB to 16bit String
 439 size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 440 {
 441     size_t len=0;
 442
 443     while (*psz && (!buf || len < n))
 444     {
 445         if (buf)
 446         {
 447             *buf++ = ((char*)psz)[1];
 448             *buf++ = ((char*)psz)[0];
 449         }
 450         len += sizeof(wxUint16);
 451         psz++;
 452     }
 453     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 454
 455     return len;
 456 }
 457
 458
 459 #else // WC_UTF16
 460
 461
 462 // copy 16bit MB to 32bit String
 463 size_t wxMBConvUTF16straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 464 {
 465     size_t len=0;
 466
 467     while (*(wxUint16*)psz && (!buf || len < n))
 468     {
 469         wxUint32 cc;
 470         size_t pa=decode_utf16((wxUint16*)psz, cc);
 471         if (pa == (size_t)-1)
 472             return pa;
 473
 474         if (buf)
 475             *buf++ = cc;
 476         len++;
 477         psz += pa * sizeof(wxUint16);
 478     }
 479     if (buf && len<n)   *buf=0;
 480
 481     return len;
 482 }
 483
 484
 485 // copy 32bit String to 16bit MB
 486 size_t wxMBConvUTF16straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 487 {
 488     size_t len=0;
 489
 490     while (*psz && (!buf || len < n))
 491     {
 492         wxUint16 cc[2];
 493         size_t pa=encode_utf16(*psz, cc);
 494
 495         if (pa == (size_t)-1)
 496             return pa;
 497
 498         if (buf)
 499         {
 500             *(wxUint16*)buf = cc[0];
 501             buf += sizeof(wxUint16);
 502             if (pa > 1)
 503             {
 504                 *(wxUint16*)buf = cc[1];
 505                 buf += sizeof(wxUint16);
 506             }
 507         }
 508
 509         len += pa*sizeof(wxUint16);
 510         psz++;
 511     }
 512     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 513
 514     return len;
 515 }
 516
 517
 518 // swap 16bit MB to 32bit String
 519 size_t wxMBConvUTF16swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 520 {
 521     size_t len=0;
 522
 523     while (*(wxUint16*)psz && (!buf || len < n))
 524     {
 525         wxUint32 cc;
 526         char tmp[4];
 527         tmp[0]=psz[1];  tmp[1]=psz[0];
 528         tmp[2]=psz[3];  tmp[3]=psz[2];
 529
 530         size_t pa=decode_utf16((wxUint16*)tmp, cc);
 531         if (pa == (size_t)-1)
 532             return pa;
 533
 534         if (buf)
 535             *buf++ = cc;
 536
 537         len++;
 538         psz += pa * sizeof(wxUint16);
 539     }
 540     if (buf && len<n)   *buf=0;
 541
 542     return len;
 543 }
 544
 545
 546 // swap 32bit String to 16bit MB
 547 size_t wxMBConvUTF16swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 548 {
 549     size_t len=0;
 550
 551     while (*psz && (!buf || len < n))
 552     {
 553         wxUint16 cc[2];
 554         size_t pa=encode_utf16(*psz, cc);
 555
 556         if (pa == (size_t)-1)
 557             return pa;
 558
 559         if (buf)
 560         {
 561             *buf++ = ((char*)cc)[1];
 562             *buf++ = ((char*)cc)[0];
 563             if (pa > 1)
 564             {
 565                 *buf++ = ((char*)cc)[3];
 566                 *buf++ = ((char*)cc)[2];
 567             }
 568         }
 569
 570         len += pa*sizeof(wxUint16);
 571         psz++;
 572     }
 573     if (buf && len<=n-sizeof(wxUint16))   *(wxUint16*)buf=0;
 574
 575     return len;
 576 }
 577
 578 #endif // WC_UTF16
 579
 580
 581 // ----------------------------------------------------------------------------
 582 // UTF-32
 583 // ----------------------------------------------------------------------------
 584
 585 #ifdef WORDS_BIGENDIAN
 586 #define wxMBConvUTF32straight  wxMBConvUTF32BE
 587 #define wxMBConvUTF32swap      wxMBConvUTF32LE
 588 #else
 589 #define wxMBConvUTF32swap      wxMBConvUTF32BE
 590 #define wxMBConvUTF32straight  wxMBConvUTF32LE
 591 #endif
 592
 593
 594 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32LE) wxConvUTF32LE;
 595 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF32BE) wxConvUTF32BE;
 596
 597
 598 #ifdef WC_UTF16
 599
 600 // copy 32bit MB to 16bit String
 601 size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 602 {
 603     size_t len=0;
 604
 605     while (*(wxUint32*)psz && (!buf || len < n))
 606     {
 607         wxUint16 cc[2];
 608
 609         size_t pa=encode_utf16(*(wxUint32*)psz, cc);
 610         if (pa == (size_t)-1)
 611             return pa;
 612
 613         if (buf)
 614         {
 615             *buf++ = cc[0];
 616             if (pa > 1)
 617                 *buf++ = cc[1];
 618         }
 619         len += pa;
 620         psz += sizeof(wxUint32);
 621     }
 622     if (buf && len<n)   *buf=0;
 623
 624     return len;
 625 }
 626
 627
 628 // copy 16bit String to 32bit MB
 629 size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 630 {
 631     size_t len=0;
 632
 633     while (*psz && (!buf || len < n))
 634     {
 635         wxUint32 cc;
 636
 637         // cast is ok for WC_UTF16
 638         size_t pa = decode_utf16((const wxUint16 *)psz, cc);
 639         if (pa == (size_t)-1)
 640             return pa;
 641
 642         if (buf)
 643         {
 644             *(wxUint32*)buf = cc;
 645             buf += sizeof(wxUint32);
 646         }
 647         len += sizeof(wxUint32);
 648         psz += pa;
 649     }
 650
 651     if (buf && len<=n-sizeof(wxUint32))
 652         *(wxUint32*)buf=0;
 653
 654     return len;
 655 }
 656
 657
 658
 659 // swap 32bit MB to 16bit String
 660 size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 661 {
 662     size_t len=0;
 663
 664     while (*(wxUint32*)psz && (!buf || len < n))
 665     {
 666         char tmp[4];
 667         tmp[0] = psz[3];   tmp[1] = psz[2];
 668         tmp[2] = psz[1];   tmp[3] = psz[0];
 669
 670
 671         wxUint16 cc[2];
 672
 673         size_t pa=encode_utf16(*(wxUint32*)tmp, cc);
 674         if (pa == (size_t)-1)
 675             return pa;
 676
 677         if (buf)
 678         {
 679             *buf++ = cc[0];
 680             if (pa > 1)
 681                 *buf++ = cc[1];
 682         }
 683         len += pa;
 684         psz += sizeof(wxUint32);
 685     }
 686
 687     if (buf && len<n)
 688         *buf=0;
 689
 690     return len;
 691 }
 692
 693
 694 // swap 16bit String to 32bit MB
 695 size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 696 {
 697     size_t len=0;
 698
 699     while (*psz && (!buf || len < n))
 700     {
 701         char cc[4];
 702
 703         // cast is ok for WC_UTF16
 704         size_t pa=decode_utf16((const wxUint16 *)psz, *(wxUint32*)cc);
 705         if (pa == (size_t)-1)
 706             return pa;
 707
 708         if (buf)
 709         {
 710             *buf++ = cc[3];
 711             *buf++ = cc[2];
 712             *buf++ = cc[1];
 713             *buf++ = cc[0];
 714         }
 715         len += sizeof(wxUint32);
 716         psz += pa;
 717     }
 718
 719     if (buf && len<=n-sizeof(wxUint32))
 720         *(wxUint32*)buf=0;
 721
 722     return len;
 723 }
 724
 725 #else // WC_UTF16
 726
 727
 728 // copy 32bit MB to 32bit String
 729 size_t wxMBConvUTF32straight::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 730 {
 731     size_t len=0;
 732
 733     while (*(wxUint32*)psz && (!buf || len < n))
 734     {
 735         if (buf)
 736             *buf++ = *(wxUint32*)psz;
 737         len++;
 738         psz += sizeof(wxUint32);
 739     }
 740
 741     if (buf && len<n)
 742         *buf=0;
 743
 744     return len;
 745 }
 746
 747
 748 // copy 32bit String to 32bit MB
 749 size_t wxMBConvUTF32straight::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 750 {
 751     size_t len=0;
 752
 753     while (*psz && (!buf || len < n))
 754     {
 755         if (buf)
 756         {
 757             *(wxUint32*)buf = *psz;
 758             buf += sizeof(wxUint32);
 759         }
 760
 761         len += sizeof(wxUint32);
 762         psz++;
 763     }
 764
 765     if (buf && len<=n-sizeof(wxUint32))
 766         *(wxUint32*)buf=0;
 767
 768     return len;
 769 }
 770
 771
 772 // swap 32bit MB to 32bit String
 773 size_t wxMBConvUTF32swap::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 774 {
 775     size_t len=0;
 776
 777     while (*(wxUint32*)psz && (!buf || len < n))
 778     {
 779         if (buf)
 780         {
 781             ((char *)buf)[0] = psz[3];
 782             ((char *)buf)[1] = psz[2];
 783             ((char *)buf)[2] = psz[1];
 784             ((char *)buf)[3] = psz[0];
 785             buf++;
 786         }
 787         len++;
 788         psz += sizeof(wxUint32);
 789     }
 790
 791     if (buf && len<n)
 792         *buf=0;
 793
 794     return len;
 795 }
 796
 797
 798 // swap 32bit String to 32bit MB
 799 size_t wxMBConvUTF32swap::WC2MB(char *buf, const wchar_t *psz, size_t n) const
 800 {
 801     size_t len=0;
 802
 803     while (*psz && (!buf || len < n))
 804     {
 805         if (buf)
 806         {
 807             *buf++ = ((char *)psz)[3];
 808             *buf++ = ((char *)psz)[2];
 809             *buf++ = ((char *)psz)[1];
 810             *buf++ = ((char *)psz)[0];
 811         }
 812         len += sizeof(wxUint32);
 813         psz++;
 814     }
 815
 816     if (buf && len<=n-sizeof(wxUint32))
 817         *(wxUint32*)buf=0;
 818
 819     return len;
 820 }
 821
 822
 823 #endif // WC_UTF16
 824
 825
 826 // ============================================================================
 827 // The classes doing conversion using the iconv_xxx() functions
 828 // ============================================================================
 829
 830 #ifdef HAVE_ICONV
 831
 832 // VS: glibc 2.1.3 is broken in that iconv() conversion to/from UCS4 fails with E2BIG
 833 //     if output buffer is _exactly_ as big as needed. Such case is (unless there's
 834 //     yet another bug in glibc) the only case when iconv() returns with (size_t)-1
 835 //     (which means error) and says there are 0 bytes left in the input buffer --
 836 //     when _real_ error occurs, bytes-left-in-input buffer is non-zero. Hence,
 837 //     this alternative test for iconv() failure.
 838 //     [This bug does not appear in glibc 2.2.]
 839 #if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 1
 840 #define ICONV_FAILED(cres, bufLeft) ((cres == (size_t)-1) && \
 841                                      (errno != E2BIG || bufLeft != 0))
 842 #else
 843 #define ICONV_FAILED(cres, bufLeft)  (cres == (size_t)-1)
 844 #endif
 845
 846 #define ICONV_CHAR_CAST(x)  ((ICONV_CONST char **)(x))
 847
 848 // ----------------------------------------------------------------------------
 849 // wxMBConv_iconv: encapsulates an iconv character set
 850 // ----------------------------------------------------------------------------
 851
 852 class wxMBConv_iconv : public wxMBConv
 853 {
 854 public:
 855     wxMBConv_iconv(const wxChar *name);
 856     virtual ~wxMBConv_iconv();
 857
 858     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
 859     virtual size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const;
 860
 861     bool IsOk() const
 862         { return (m2w != (iconv_t)-1) && (w2m != (iconv_t)-1); }
 863
 864 protected:
 865     // the iconv handlers used to translate from multibyte to wide char and in
 866     // the other direction
 867     iconv_t m2w,
 868             w2m;
 869
 870 private:
 871     // the name (for iconv_open()) of a wide char charset -- if none is
 872     // available on this machine, it will remain NULL
 873     static const char *ms_wcCharsetName;
 874
 875     // true if the wide char encoding we use (i.e. ms_wcCharsetName) has
 876     // different endian-ness than the native one
 877     static bool ms_wcNeedsSwap;
 878 };
 879
 880 const char *wxMBConv_iconv::ms_wcCharsetName = NULL;
 881 bool wxMBConv_iconv::ms_wcNeedsSwap = false;
 882
 883 wxMBConv_iconv::wxMBConv_iconv(const wxChar *name)
 884 {
 885     // Do it the hard way
 886     char cname[100];
 887     for (size_t i = 0; i < wxStrlen(name)+1; i++)
 888         cname[i] = (char) name[i];
 889
 890     // check for charset that represents wchar_t:
 891     if (ms_wcCharsetName == NULL)
 892     {
 893         ms_wcNeedsSwap = false;
 894
 895         // try charset with explicit bytesex info (e.g. "UCS-4LE"):
 896         ms_wcCharsetName = WC_NAME_BEST;
 897         m2w = iconv_open(ms_wcCharsetName, cname);
 898
 899         if (m2w == (iconv_t)-1)
 900         {
 901             // try charset w/o bytesex info (e.g. "UCS4")
 902             // and check for bytesex ourselves:
 903             ms_wcCharsetName = WC_NAME;
 904             m2w = iconv_open(ms_wcCharsetName, cname);
 905
 906             // last bet, try if it knows WCHAR_T pseudo-charset
 907             if (m2w == (iconv_t)-1)
 908             {
 909                 ms_wcCharsetName = "WCHAR_T";
 910                 m2w = iconv_open(ms_wcCharsetName, cname);
 911             }
 912
 913             if (m2w != (iconv_t)-1)
 914             {
 915                 char    buf[2], *bufPtr;
 916                 wchar_t wbuf[2], *wbufPtr;
 917                 size_t  insz, outsz;
 918                 size_t  res;
 919
 920                 buf[0] = 'A';
 921                 buf[1] = 0;
 922                 wbuf[0] = 0;
 923                 insz = 2;
 924                 outsz = SIZEOF_WCHAR_T * 2;
 925                 wbufPtr = wbuf;
 926                 bufPtr = buf;
 927
 928                 res = iconv(m2w, ICONV_CHAR_CAST(&bufPtr), &insz,
 929                             (char**)&wbufPtr, &outsz);
 930
 931                 if (ICONV_FAILED(res, insz))
 932                 {
 933                     ms_wcCharsetName = NULL;
 934                     wxLogLastError(wxT("iconv"));
 935                     wxLogError(_("Conversion to charset '%s' doesn't work."), name);
 936                 }
 937                 else
 938                 {
 939                     ms_wcNeedsSwap = wbuf[0] != (wchar_t)buf[0];
 940                 }
 941             }
 942             else
 943             {
 944                 ms_wcCharsetName = NULL;
 945
 946                 // VS: we must not output an error here, since wxWindows will safely
 947                 //     fall back to using wxEncodingConverter.
 948                 wxLogTrace(wxT("strconv"), wxT("Impossible to convert to/from charset '%s' with iconv, falling back to wxEncodingConverter."), name);
 949                 //wxLogError(
 950             }
 951         }
 952         wxLogTrace(wxT("strconv"), wxT("wchar_t charset is '%s', needs swap: %i"), ms_wcCharsetName, ms_wcNeedsSwap);
 953     }
 954     else // we already have ms_wcCharsetName
 955     {
 956         m2w = iconv_open(ms_wcCharsetName, cname);
 957     }
 958
 959     // NB: don't ever pass NULL to iconv_open(), it may crash!
 960     if ( ms_wcCharsetName )
 961     {
 962         w2m = iconv_open( cname, ms_wcCharsetName);
 963     }
 964     else
 965     {
 966         w2m = (iconv_t)-1;
 967     }
 968 }
 969
 970 wxMBConv_iconv::~wxMBConv_iconv()
 971 {
 972     if ( m2w != (iconv_t)-1 )
 973         iconv_close(m2w);
 974     if ( w2m != (iconv_t)-1 )
 975         iconv_close(w2m);
 976 }
 977
 978 size_t wxMBConv_iconv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 979 {
 980     size_t inbuf = strlen(psz);
 981     size_t outbuf = n * SIZEOF_WCHAR_T;
 982     size_t res, cres;
 983     // VS: Use these instead of psz, buf because iconv() modifies its arguments:
 984     wchar_t *bufPtr = buf;
 985     const char *pszPtr = psz;
 986
 987     if (buf)
 988     {
 989         // have destination buffer, convert there
 990         cres = iconv(m2w,
 991                      ICONV_CHAR_CAST(&pszPtr), &inbuf,
 992                      (char**)&bufPtr, &outbuf);
 993         res = n - (outbuf / SIZEOF_WCHAR_T);
 994
 995         if (ms_wcNeedsSwap)
 996         {
 997             // convert to native endianness
 998             WC_BSWAP(buf /* _not_ bufPtr */, res)
 999         }
1000
1001         // NB: iconv was given only strlen(psz) characters on input, and so
1002         //     it couldn't convert the trailing zero. Let's do it ourselves
1003         //     if there's some room left for it in the output buffer.
1004         if (res < n)
1005             buf[res] = 0;
1006     }
1007     else
1008     {
1009         // no destination buffer... convert using temp buffer
1010         // to calculate destination buffer requirement
1011         wchar_t tbuf[8];
1012         res = 0;
1013         do {
1014             bufPtr = tbuf;
1015             outbuf = 8*SIZEOF_WCHAR_T;
1016
1017             cres = iconv(m2w,
1018                          ICONV_CHAR_CAST(&pszPtr), &inbuf,
1019                          (char**)&bufPtr, &outbuf );
1020
1021             res += 8-(outbuf/SIZEOF_WCHAR_T);
1022         } while ((cres==(size_t)-1) && (errno==E2BIG));
1023     }
1024
1025     if (ICONV_FAILED(cres, inbuf))
1026     {
1027         //VS: it is ok if iconv fails, hence trace only
1028         wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
1029         return (size_t)-1;
1030     }
1031
1032     return res;
1033 }
1034
1035 size_t wxMBConv_iconv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1036 {
1037     size_t inbuf = wxWcslen(psz) * SIZEOF_WCHAR_T;
1038     size_t outbuf = n;
1039     size_t res, cres;
1040
1041     wchar_t *tmpbuf = 0;
1042
1043     if (ms_wcNeedsSwap)
1044     {
1045         // need to copy to temp buffer to switch endianness
1046         // this absolutely doesn't rock!
1047         // (no, doing WC_BSWAP twice on the original buffer won't help, as it
1048         //  could be in read-only memory, or be accessed in some other thread)
1049         tmpbuf=(wchar_t*)malloc((inbuf+1)*SIZEOF_WCHAR_T);
1050         memcpy(tmpbuf,psz,(inbuf+1)*SIZEOF_WCHAR_T);
1051         WC_BSWAP(tmpbuf, inbuf)
1052         psz=tmpbuf;
1053     }
1054
1055     if (buf)
1056     {
1057         // have destination buffer, convert there
1058         cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
1059
1060         res = n-outbuf;
1061
1062         // NB: iconv was given only wcslen(psz) characters on input, and so
1063         //     it couldn't convert the trailing zero. Let's do it ourselves
1064         //     if there's some room left for it in the output buffer.
1065         if (res < n)
1066             buf[0] = 0;
1067     }
1068     else
1069     {
1070         // no destination buffer... convert using temp buffer
1071         // to calculate destination buffer requirement
1072         char tbuf[16];
1073         res = 0;
1074         do {
1075             buf = tbuf; outbuf = 16;
1076
1077             cres = iconv( w2m, ICONV_CHAR_CAST(&psz), &inbuf, &buf, &outbuf );
1078
1079             res += 16 - outbuf;
1080         } while ((cres==(size_t)-1) && (errno==E2BIG));
1081     }
1082
1083     if (ms_wcNeedsSwap)
1084     {
1085         free(tmpbuf);
1086     }
1087
1088     if (ICONV_FAILED(cres, inbuf))
1089     {
1090         //VS: it is ok if iconv fails, hence trace only
1091         wxLogTrace(wxT("strconv"), wxT("iconv failed: %s"), wxSysErrorMsg(wxSysErrorCode()));
1092         return (size_t)-1;
1093     }
1094
1095     return res;
1096 }
1097
1098 #endif // HAVE_ICONV
1099
1100
1101 // ============================================================================
1102 // Win32 conversion classes
1103 // ============================================================================
1104
1105 #ifdef wxHAVE_WIN32_MB2WC
1106
1107 // from utils.cpp
1108 extern WXDLLIMPEXP_BASE long wxCharsetToCodepage(const wxChar *charset);
1109 extern WXDLLIMPEXP_BASE long wxEncodingToCodepage(wxFontEncoding encoding);
1110
1111 class wxMBConv_win32 : public wxMBConv
1112 {
1113 public:
1114     wxMBConv_win32()
1115     {
1116         m_CodePage = CP_ACP;
1117     }
1118
1119     wxMBConv_win32(const wxChar* name)
1120     {
1121         m_CodePage = wxCharsetToCodepage(name);
1122     }
1123
1124     wxMBConv_win32(wxFontEncoding encoding)
1125     {
1126         m_CodePage = wxEncodingToCodepage(encoding);
1127     }
1128
1129     size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const
1130     {
1131         const size_t len = ::MultiByteToWideChar
1132                              (
1133                                 m_CodePage,     // code page
1134                                 0,              // flags (none)
1135                                 psz,            // input string
1136                                 -1,             // its length (NUL-terminated)
1137                                 buf,            // output string
1138                                 buf ? n : 0     // size of output buffer
1139                              );
1140
1141         // note that it returns count of written chars for buf != NULL and size
1142         // of the needed buffer for buf == NULL so in either case the length of
1143         // the string (which never includes the terminating NUL) is one less
1144         return len ? len - 1 : (size_t)-1;
1145     }
1146
1147     size_t WC2MB(char *buf, const wchar_t *psz, size_t n) const
1148     {
1149         const size_t len = ::WideCharToMultiByte
1150                              (
1151                                 m_CodePage,     // code page
1152                                 0,              // flags (none)
1153                                 psz,            // input string
1154                                 -1,             // it is (wide) NUL-terminated
1155                                 buf,            // output buffer
1156                                 buf ? n : 0,    // and its size
1157                                 NULL,           // default "replacement" char
1158                                 NULL            // [out] was it used?
1159                              );
1160
1161         // see the comment above for the reason of "len - 1"
1162         return len ? len - 1 : (size_t)-1;
1163     }
1164
1165     bool IsOk() const
1166         { return m_CodePage != -1; }
1167
1168 public:
1169     long m_CodePage;
1170 };
1171
1172 #endif // wxHAVE_WIN32_MB2WC
1173
1174
1175 // ============================================================================
1176 // wxEncodingConverter based conversion classes
1177 // ============================================================================
1178
1179 #if wxUSE_FONTMAP
1180
1181 class wxMBConv_wxwin : public wxMBConv
1182 {
1183 private:
1184     void Init()
1185     {
1186         m_ok = m2w.Init(m_enc, wxFONTENCODING_UNICODE) &&
1187                w2m.Init(wxFONTENCODING_UNICODE, m_enc);
1188     }
1189
1190 public:
1191     // temporarily just use wxEncodingConverter stuff,
1192     // so that it works while a better implementation is built
1193     wxMBConv_wxwin(const wxChar* name)
1194     {
1195         if (name)
1196             m_enc = wxFontMapper::Get()->CharsetToEncoding(name, false);
1197         else
1198             m_enc = wxFONTENCODING_SYSTEM;
1199
1200         Init();
1201     }
1202
1203     wxMBConv_wxwin(wxFontEncoding enc)
1204     {
1205         m_enc = enc;
1206
1207         Init();
1208     }
1209
1210     size_t MB2WC(wchar_t *buf, const char *psz, size_t WXUNUSED(n)) const
1211     {
1212         size_t inbuf = strlen(psz);
1213         if (buf)
1214             m2w.Convert(psz,buf);
1215         return inbuf;
1216     }
1217
1218     size_t WC2MB(char *buf, const wchar_t *psz, size_t WXUNUSED(n)) const
1219     {
1220         const size_t inbuf = wxWcslen(psz);
1221         if (buf)
1222             w2m.Convert(psz,buf);
1223
1224         return inbuf;
1225     }
1226
1227     bool IsOk() const { return m_ok; }
1228
1229 public:
1230     wxFontEncoding m_enc;
1231     wxEncodingConverter m2w, w2m;
1232
1233     // were we initialized successfully?
1234     bool m_ok;
1235
1236     DECLARE_NO_COPY_CLASS(wxMBConv_wxwin)
1237 };
1238
1239 #endif // wxUSE_FONTMAP
1240
1241 // ============================================================================
1242 // wxCSConv implementation
1243 // ============================================================================
1244
1245 void wxCSConv::Init()
1246 {
1247     m_name = NULL;
1248     m_convReal =  NULL;
1249     m_deferred = true;
1250 }
1251
1252 wxCSConv::wxCSConv(const wxChar *charset)
1253 {
1254     Init();
1255
1256     if ( charset )
1257     {
1258         SetName(charset);
1259     }
1260
1261     m_encoding = wxFONTENCODING_SYSTEM;
1262 }
1263
1264 wxCSConv::wxCSConv(wxFontEncoding encoding)
1265 {
1266     if ( encoding == wxFONTENCODING_MAX || encoding == wxFONTENCODING_DEFAULT )
1267     {
1268         wxFAIL_MSG( _T("invalid encoding value in wxCSConv ctor") );
1269
1270         encoding = wxFONTENCODING_SYSTEM;
1271     }
1272
1273     Init();
1274
1275     m_encoding = encoding;
1276 }
1277
1278 wxCSConv::~wxCSConv()
1279 {
1280     Clear();
1281 }
1282
1283 wxCSConv::wxCSConv(const wxCSConv& conv)
1284         : wxMBConv()
1285 {
1286     Init();
1287
1288     SetName(conv.m_name);
1289     m_encoding = conv.m_encoding;
1290 }
1291
1292 wxCSConv& wxCSConv::operator=(const wxCSConv& conv)
1293 {
1294     Clear();
1295
1296     SetName(conv.m_name);
1297     m_encoding = conv.m_encoding;
1298
1299     return *this;
1300 }
1301
1302 void wxCSConv::Clear()
1303 {
1304     free(m_name);
1305     delete m_convReal;
1306
1307     m_name = NULL;
1308     m_convReal = NULL;
1309 }
1310
1311 void wxCSConv::SetName(const wxChar *charset)
1312 {
1313     if (charset)
1314     {
1315         m_name = wxStrdup(charset);
1316         m_deferred = true;
1317     }
1318 }
1319
1320 wxMBConv *wxCSConv::DoCreate() const
1321 {
1322     // check for the special case of ASCII or ISO8859-1 charset: as we have
1323     // special knowledge of it anyhow, we don't need to create a special
1324     // conversion object
1325     if ( m_encoding == wxFONTENCODING_ISO8859_1 )
1326     {
1327         // don't convert at all
1328         return NULL;
1329     }
1330
1331     // we trust OS to do conversion better than we can so try external
1332     // conversion methods first
1333     //
1334     // the full order is:
1335     //      1. OS conversion (iconv() under Unix or Win32 API)
1336     //      2. hard coded conversions for UTF
1337     //      3. wxEncodingConverter as fall back
1338
1339     // step (1)
1340 #ifdef HAVE_ICONV
1341 #if !wxUSE_FONTMAP
1342     if ( m_name )
1343 #endif // !wxUSE_FONTMAP
1344     {
1345         wxString name(m_name);
1346
1347 #if wxUSE_FONTMAP
1348         if ( name.empty() )
1349             name = wxFontMapper::Get()->GetEncodingName(m_encoding);
1350 #endif // wxUSE_FONTMAP
1351
1352         wxMBConv_iconv *conv = new wxMBConv_iconv(name);
1353         if ( conv->IsOk() )
1354             return conv;
1355
1356         delete conv;
1357     }
1358 #endif // HAVE_ICONV
1359
1360 #ifdef wxHAVE_WIN32_MB2WC
1361     {
1362         wxMBConv_win32 *conv = m_name ? new wxMBConv_win32(m_name)
1363                                       : new wxMBConv_win32(m_encoding);
1364         if ( conv->IsOk() )
1365             return conv;
1366
1367         delete conv;
1368     }
1369 #endif // wxHAVE_WIN32_MB2WC
1370
1371     // step (2)
1372     wxFontEncoding enc = m_encoding;
1373 #if wxUSE_FONTMAP
1374     if ( enc == wxFONTENCODING_SYSTEM && m_name )
1375     {
1376         // use "false" to suppress interactive dialogs -- we can be called from
1377         // anywhere and popping up a dialog from here is the last thing we want to
1378         // do
1379         enc = wxFontMapper::Get()->CharsetToEncoding(m_name, false);
1380     }
1381 #endif // wxUSE_FONTMAP
1382
1383     switch ( enc )
1384     {
1385         case wxFONTENCODING_UTF7:
1386              return new wxMBConvUTF7;
1387
1388         case wxFONTENCODING_UTF8:
1389              return new wxMBConvUTF8;
1390
1391         case wxFONTENCODING_UTF16BE:
1392              return new wxMBConvUTF16BE;
1393
1394         case wxFONTENCODING_UTF16LE:
1395              return new wxMBConvUTF16LE;
1396
1397         case wxFONTENCODING_UTF32BE:
1398              return new wxMBConvUTF32BE;
1399
1400         case wxFONTENCODING_UTF32LE:
1401              return new wxMBConvUTF32LE;
1402
1403         default:
1404              // nothing to do but put here to suppress gcc warnings
1405              ;
1406     }
1407
1408     // step (3)
1409 #if wxUSE_FONTMAP
1410     {
1411         wxMBConv_wxwin *conv = m_name ? new wxMBConv_wxwin(m_name)
1412                                       : new wxMBConv_wxwin(m_encoding);
1413         if ( conv->IsOk() )
1414             return conv;
1415
1416         delete conv;
1417     }
1418 #endif // wxUSE_FONTMAP
1419
1420     // NB: This is a hack to prevent deadlock. What could otherwise happen
1421     //     in Unicode build: wxConvLocal creation ends up being here
1422     //     because of some failure and logs the error. But wxLog will try to
1423     //     attach timestamp, for which it will need wxConvLocal (to convert
1424     //     time to char* and then wchar_t*), but that fails, tries to log
1425     //     error, but wxLog has a (already locked) critical section that
1426     //     guards static buffer.
1427     static bool alreadyLoggingError = false;
1428     if (!alreadyLoggingError)
1429     {
1430         alreadyLoggingError = true;
1431         wxLogError(_("Cannot convert from the charset '%s'!"),
1432                    m_name ? m_name
1433                       :
1434 #if wxUSE_FONTMAP
1435                          wxFontMapper::GetEncodingDescription(m_encoding).c_str()
1436 #else // !wxUSE_FONTMAP
1437                          wxString::Format(_("encoding %s"), m_encoding).c_str()
1438 #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
1439               );
1440         alreadyLoggingError = false;
1441     }
1442
1443     return NULL;
1444 }
1445
1446 void wxCSConv::CreateConvIfNeeded() const
1447 {
1448     if ( m_deferred )
1449     {
1450         wxCSConv *self = (wxCSConv *)this; // const_cast
1451
1452 #if wxUSE_INTL
1453         // if we don't have neither the name nor the encoding, use the default
1454         // encoding for this system
1455         if ( !m_name && m_encoding == wxFONTENCODING_SYSTEM )
1456         {
1457             self->m_name = wxStrdup(wxLocale::GetSystemEncodingName());
1458         }
1459 #endif // wxUSE_INTL
1460
1461         self->m_convReal = DoCreate();
1462         self->m_deferred = false;
1463     }
1464 }
1465
1466 size_t wxCSConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
1467 {
1468     CreateConvIfNeeded();
1469
1470     if (m_convReal)
1471         return m_convReal->MB2WC(buf, psz, n);
1472
1473     // latin-1 (direct)
1474     size_t len = strlen(psz);
1475
1476     if (buf)
1477     {
1478         for (size_t c = 0; c <= len; c++)
1479             buf[c] = (unsigned char)(psz[c]);
1480     }
1481
1482     return len;
1483 }
1484
1485 size_t wxCSConv::WC2MB(char *buf, const wchar_t *psz, size_t n) const
1486 {
1487     CreateConvIfNeeded();
1488
1489     if (m_convReal)
1490         return m_convReal->WC2MB(buf, psz, n);
1491
1492     // latin-1 (direct)
1493     const size_t len = wxWcslen(psz);
1494     if (buf)
1495     {
1496         for (size_t c = 0; c <= len; c++)
1497         {
1498             if (psz[c] > 0xFF)
1499                 return (size_t)-1;
1500             buf[c] = psz[c];
1501         }
1502     }
1503     else
1504     {
1505         for (size_t c = 0; c <= len; c++)
1506         {
1507             if (psz[c] > 0xFF)
1508                 return (size_t)-1;
1509         }
1510     }
1511
1512     return len;
1513 }
1514
1515 // ----------------------------------------------------------------------------
1516 // globals
1517 // ----------------------------------------------------------------------------
1518
1519 #ifdef __WINDOWS__
1520     static wxMBConv_win32 wxConvLibcObj;
1521 #else
1522     static wxMBConvLibc wxConvLibcObj;
1523 #endif
1524
1525 static wxCSConv wxConvLocalObj(wxFONTENCODING_SYSTEM);
1526 static wxCSConv wxConvISO8859_1Obj(wxFONTENCODING_ISO8859_1);
1527 static wxMBConvUTF7 wxConvUTF7Obj;
1528 static wxMBConvUTF8 wxConvUTF8Obj;
1529
1530
1531 WXDLLIMPEXP_DATA_BASE(wxMBConv&) wxConvLibc = wxConvLibcObj;
1532 WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvLocal = wxConvLocalObj;
1533 WXDLLIMPEXP_DATA_BASE(wxCSConv&) wxConvISO8859_1 = wxConvISO8859_1Obj;
1534 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF7&) wxConvUTF7 = wxConvUTF7Obj;
1535 WXDLLIMPEXP_DATA_BASE(wxMBConvUTF8&) wxConvUTF8 = wxConvUTF8Obj;
1536 WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvCurrent = &wxConvLibcObj;
1537
1538 #else // !wxUSE_WCHAR_T
1539
1540 // stand-ins in absence of wchar_t
1541 WXDLLIMPEXP_DATA_BASE(wxMBConv) wxConvLibc,
1542                                 wxConvISO8859_1,
1543                                 wxConvLocal,
1544                                 wxConvUTF8;
1545
1546 #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
1547
1548