src/common/wxchar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wxchar.cpp
   3 // Purpose:     wxChar implementation
   4 // Author:      Ove Kåven
   5 // Modified by:
   6 // Created:     09/04/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows copyright
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13   #pragma implementation "wxchar.h"
  14 #endif
  15
  16 // ===========================================================================
  17 // headers, declarations, constants
  18 // ===========================================================================
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24   #pragma hdrstop
  25 #endif
  26
  27 #define _ISOC9X_SOURCE 1 // to get vsscanf()
  28 #define _BSD_SOURCE    1 // to still get strdup()
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <locale.h>
  34 #include <time.h>
  35
  36 #ifndef WX_PRECOMP
  37   #include "wx/defs.h"
  38   #include "wx/wxchar.h"
  39   #include "wx/string.h"
  40   #include "wx/hash.h"
  41 #endif
  42
  43 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
  44   #include <windef.h>
  45   #include <winbase.h>
  46   #include <winnls.h>
  47   #include <winnt.h>
  48 #endif
  49
  50 #if wxUSE_WCHAR_T
  51 size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
  52 {
  53   // assume that we have mbsrtowcs() too if we have wcsrtombs()
  54 #if HAVE_WCSRTOMBS
  55   mbstate_t mbstate;
  56   memset(&mbstate, 0, sizeof(mbstate_t));
  57 #endif
  58
  59   if (buf) {
  60     if (!n || !*psz) {
  61       if (n) *buf = wxT('\0');
  62       return 0;
  63     }
  64 #ifdef HAVE_WCSRTOMBS
  65     return mbsrtowcs(buf, &psz, n, &mbstate);
  66 #else
  67     return mbstowcs(buf, psz, n);
  68 #endif
  69   }
  70
  71 #ifdef HAVE_WCSRTOMBS
  72   return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
  73 #else
  74   return mbstowcs((wchar_t *) NULL, psz, 0);
  75 #endif
  76 }
  77
  78 size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
  79 {
  80 #if HAVE_WCSRTOMBS
  81   mbstate_t mbstate;
  82   memset(&mbstate, 0, sizeof(mbstate_t));
  83 #endif
  84
  85   if (buf) {
  86     if (!n || !*pwz) {
  87       // glibc2.1 chokes on null input
  88       if (n) *buf = '\0';
  89       return 0;
  90     }
  91 #if HAVE_WCSRTOMBS
  92     return wcsrtombs(buf, &pwz, n, &mbstate);
  93 #else
  94     return wcstombs(buf, pwz, n);
  95 #endif
  96   }
  97
  98 #if HAVE_WCSRTOMBS
  99   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
 100 #else
 101   return wcstombs((char *) NULL, pwz, 0);
 102 #endif
 103 }
 104 #endif // wxUSE_WCHAR_T
 105
 106 bool WXDLLEXPORT wxOKlibc()
 107 {
 108 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
 109   // glibc 2.0 uses UTF-8 even when it shouldn't
 110   wchar_t res = 0;
 111   if ((MB_CUR_MAX == 2) &&
 112       (wxMB2WC(&res, "\xdd\xa5", 1) == 1) &&
 113       (res==0x765)) {
 114     // this is UTF-8 allright, check whether that's what we want
 115     char *cur_locale = setlocale(LC_CTYPE, NULL);
 116     if ((strlen(cur_locale) < 4) ||
 117             (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8")) ||
 118             (strcasecmp(cur_locale + strlen(cur_locale) - 5, "utf-8"))) {
 119       // nope, don't use libc conversion
 120       return FALSE;
 121     }
 122   }
 123 #endif
 124   return TRUE;
 125 }
 126
 127 // ============================================================================
 128 // printf() functions business
 129 // ============================================================================
 130
 131 // special test mode: define all functions below even if we don't really need
 132 // them to be able to test them
 133 #ifdef wxTEST_PRINTF
 134     #undef wxFprintf
 135     #undef wxPrintf
 136     #undef wxSprintf
 137     #undef wxVfprintf
 138     #undef wxVsprintf
 139     #undef wxVprintf
 140     #undef wxVsnprintf_
 141     #undef wxSnprintf_
 142
 143     #define wxNEED_WPRINTF
 144
 145     int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr );
 146 #endif
 147
 148 // ----------------------------------------------------------------------------
 149 // implement [v]snprintf() if the system doesn't provide a safe one
 150 // ----------------------------------------------------------------------------
 151
 152 #if !defined(wxVsnprintf_)
 153 int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
 154                              const wxChar *format, va_list argptr)
 155 {
 156     // buffer to avoid dynamic memory allocation each time for small strings
 157     char szScratch[1024];
 158
 159     // number of characters in the buffer so far, must be less than lenMax
 160     size_t lenCur = 0;
 161
 162     for ( size_t n = 0; ; n++ )
 163     {
 164         const wxChar chCur = format[n];
 165
 166         if ( chCur == wxT('%') )
 167         {
 168             static char s_szFlags[256] = "%";
 169             size_t flagofs = 1;
 170             bool adj_left = FALSE,
 171                  in_prec = FALSE,
 172                  prec_dot = FALSE,
 173                  done = FALSE;
 174             int ilen = 0;
 175             size_t min_width = 0,
 176                    max_width = wxSTRING_MAXLEN;
 177             do
 178             {
 179
 180 #define CHECK_PREC \
 181                 if (in_prec && !prec_dot) \
 182                 { \
 183                     s_szFlags[flagofs++] = '.'; \
 184                     prec_dot = TRUE; \
 185                 }
 186
 187 #define APPEND_CH(ch) \
 188                 if ( lenCur == lenMax ) \
 189                     return -1; \
 190                 \
 191                 buf[lenCur++] = ch
 192
 193 #define APPEND_STR(s) \
 194                 { \
 195                     for ( const wxChar *p = s; *p; p++ ) \
 196                     { \
 197                         APPEND_CH(*p); \
 198                     } \
 199                 }
 200
 201                 // what follows '%'?
 202                 const wxChar ch = format[++n];
 203                 switch ( ch )
 204                 {
 205                     case wxT('\0'):
 206                         APPEND_CH(_T('\0'));
 207
 208                         done = TRUE;
 209                         break;
 210
 211                     case wxT('%'):
 212                         APPEND_CH(_T('%'));
 213                         done = TRUE;
 214                         break;
 215
 216                     case wxT('#'):
 217                     case wxT('0'):
 218                     case wxT(' '):
 219                     case wxT('+'):
 220                     case wxT('\''):
 221                         CHECK_PREC
 222                         s_szFlags[flagofs++] = ch;
 223                         break;
 224
 225                     case wxT('-'):
 226                         CHECK_PREC
 227                         adj_left = TRUE;
 228                         s_szFlags[flagofs++] = ch;
 229                         break;
 230
 231                     case wxT('.'):
 232                         CHECK_PREC
 233                         in_prec = TRUE;
 234                         prec_dot = FALSE;
 235                         max_width = 0;
 236                         // dot will be auto-added to s_szFlags if non-negative
 237                         // number follows
 238                         break;
 239
 240                     case wxT('h'):
 241                         ilen = -1;
 242                         CHECK_PREC
 243                         s_szFlags[flagofs++] = ch;
 244                         break;
 245
 246                     case wxT('l'):
 247                         ilen = 1;
 248                         CHECK_PREC
 249                         s_szFlags[flagofs++] = ch;
 250                         break;
 251
 252                     case wxT('q'):
 253                     case wxT('L'):
 254                         ilen = 2;
 255                         CHECK_PREC
 256                         s_szFlags[flagofs++] = ch;
 257                         break;
 258
 259                     case wxT('Z'):
 260                         ilen = 3;
 261                         CHECK_PREC
 262                         s_szFlags[flagofs++] = ch;
 263                         break;
 264
 265                     case wxT('*'):
 266                         {
 267                             int len = va_arg(argptr, int);
 268                             if (in_prec)
 269                             {
 270                                 if (len<0) break;
 271                                 CHECK_PREC
 272                                     max_width = len;
 273                             }
 274                             else
 275                             {
 276                                 if (len<0)
 277                                 {
 278                                     adj_left = !adj_left;
 279                                     s_szFlags[flagofs++] = '-';
 280                                     len = -len;
 281                                 }
 282                                 min_width = len;
 283                             }
 284                             flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
 285                         }
 286                         break;
 287
 288                     case wxT('1'): case wxT('2'): case wxT('3'):
 289                     case wxT('4'): case wxT('5'): case wxT('6'):
 290                     case wxT('7'): case wxT('8'): case wxT('9'):
 291                         {
 292                             int len = 0;
 293                             CHECK_PREC
 294                             while ( (format[n] >= wxT('0')) &&
 295                                     (format[n] <= wxT('9')) )
 296                             {
 297                                 s_szFlags[flagofs++] = format[n];
 298                                 len = len*10 + (format[n] - wxT('0'));
 299                                 n++;
 300                             }
 301
 302                             if (in_prec)
 303                                 max_width = len;
 304                             else
 305                                 min_width = len;
 306
 307                             n--; // the main loop pre-increments n again
 308                         }
 309                         break;
 310
 311                     case wxT('d'):
 312                     case wxT('i'):
 313                     case wxT('o'):
 314                     case wxT('u'):
 315                     case wxT('x'):
 316                     case wxT('X'):
 317                         CHECK_PREC
 318                         s_szFlags[flagofs++] = ch;
 319                         s_szFlags[flagofs] = '\0';
 320                         if (ilen == 0 )
 321                         {
 322                             int val = va_arg(argptr, int);
 323                             ::sprintf(szScratch, s_szFlags, val);
 324                         }
 325                         else if (ilen == -1)
 326                         {
 327                             // NB: 'short int' value passed through '...'
 328                             //      is promoted to 'int', so we have to get
 329                             //      an int from stack even if we need a short
 330                             short int val = (short int) va_arg(argptr, int);
 331                             ::sprintf(szScratch, s_szFlags, val);
 332                         }
 333                         else if (ilen == 1)
 334                         {
 335                             long int val = va_arg(argptr, long int);
 336                             ::sprintf(szScratch, s_szFlags, val);
 337                         }
 338                         else if (ilen == 2)
 339                         {
 340 #if SIZEOF_LONG_LONG
 341                             long long int val = va_arg(argptr, long long int);
 342                             ::sprintf(szScratch, s_szFlags, val);
 343 #else // !long long
 344                             long int val = va_arg(argptr, long int);
 345                             ::sprintf(szScratch, s_szFlags, val);
 346 #endif // long long/!long long
 347                         }
 348                         else if (ilen == 3)
 349                         {
 350                             size_t val = va_arg(argptr, size_t);
 351                             ::sprintf(szScratch, s_szFlags, val);
 352                         }
 353
 354                         {
 355                             const wxMB2WXbuf tmp =
 356                                 wxConvLibc.cMB2WX(szScratch);
 357                             APPEND_STR(tmp);
 358                         }
 359
 360                         done = TRUE;
 361                         break;
 362
 363                     case wxT('e'):
 364                     case wxT('E'):
 365                     case wxT('f'):
 366                     case wxT('g'):
 367                     case wxT('G'):
 368                         CHECK_PREC
 369                         s_szFlags[flagofs++] = ch;
 370                         s_szFlags[flagofs] = '\0';
 371                         if (ilen == 2)
 372                         {
 373                             long double val = va_arg(argptr, long double);
 374                             ::sprintf(szScratch, s_szFlags, val);
 375                         }
 376                         else
 377                         {
 378                             double val = va_arg(argptr, double);
 379                             ::sprintf(szScratch, s_szFlags, val);
 380                         }
 381
 382                         {
 383                             const wxMB2WXbuf tmp =
 384                                 wxConvLibc.cMB2WX(szScratch);
 385                             APPEND_STR(tmp);
 386                         }
 387
 388                         done = TRUE;
 389                         break;
 390
 391                     case wxT('p'):
 392                         {
 393                             void *val = va_arg(argptr, void *);
 394                             CHECK_PREC
 395                             s_szFlags[flagofs++] = ch;
 396                             s_szFlags[flagofs] = '\0';
 397                             ::sprintf(szScratch, s_szFlags, val);
 398
 399                             const wxMB2WXbuf tmp =
 400                                 wxConvLibc.cMB2WX(szScratch);
 401                             APPEND_STR(tmp);
 402
 403                             done = TRUE;
 404                         }
 405                         break;
 406
 407                     case wxT('c'):
 408                         {
 409                             wxChar val = va_arg(argptr, int);
 410                             // we don't need to honor padding here, do we?
 411                             APPEND_CH(val);
 412
 413                             done = TRUE;
 414                         }
 415                         break;
 416
 417                     case wxT('s'):
 418                         if (ilen == -1)
 419                         {
 420                             // wx extension: we'll let %hs mean non-Unicode
 421                             // strings
 422                             char *val = va_arg(argptr, char *);
 423 #if wxUSE_UNICODE
 424                             // ASCII->Unicode constructor handles max_width
 425                             // right
 426                             wxString s(val, wxConvLibc, max_width);
 427 #else
 428                             size_t len = wxSTRING_MAXLEN;
 429                             if (val)
 430                             {
 431                                 for ( len = 0;
 432                                       val[len] && (len < max_width);
 433                                       len++ )
 434                                     ;
 435                             }
 436                             else
 437                                 val = wxT("(null)");
 438                             wxString s(val, len);
 439 #endif
 440                             if (s.Len() < min_width)
 441                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 442
 443                             APPEND_STR(s);
 444                         }
 445                         else
 446                         {
 447                             wxChar *val = va_arg(argptr, wxChar *);
 448                             size_t len = wxSTRING_MAXLEN;
 449                             if (val)
 450                             {
 451                                 for ( len = 0;
 452                                       val[len] && (len < max_width);
 453                                       len++ )
 454                                     ;
 455                             }
 456                             else
 457                                 val = wxT("(null)");
 458
 459                             wxString s(val, len);
 460                             if (s.Len() < min_width)
 461                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 462
 463                             APPEND_STR(s);
 464                         }
 465                         done = TRUE;
 466                         break;
 467
 468                     case wxT('n'):
 469                         if (ilen == 0)
 470                         {
 471                             int *val = va_arg(argptr, int *);
 472                             *val = lenCur;
 473                         }
 474                         else if (ilen == -1)
 475                         {
 476                             short int *val = va_arg(argptr, short int *);
 477                             *val = lenCur;
 478                         }
 479                         else if (ilen >= 1)
 480                         {
 481                             long int *val = va_arg(argptr, long int *);
 482                             *val = lenCur;
 483                         }
 484                         done = TRUE;
 485                         break;
 486
 487                     default:
 488                         // bad format, leave unchanged
 489                         APPEND_CH(_T('%'));
 490                         APPEND_CH(ch);
 491                         done = TRUE;
 492                         break;
 493                 }
 494             }
 495             while (!done);
 496         }
 497         else
 498         {
 499             APPEND_CH(chCur);
 500         }
 501
 502         // terminating NUL?
 503         if ( !chCur )
 504             break;
 505     }
 506
 507     return lenCur;
 508 }
 509
 510 #undef APPEND_CH
 511 #undef APPEND_STR
 512 #undef CHECK_PREC
 513
 514 #endif // !wxVsnprintfA
 515
 516 #if !defined(wxSnprintf_)
 517 int WXDLLEXPORT wxSnprintf_(wxChar *buf, size_t len, const wxChar *format, ...)
 518 {
 519     va_list argptr;
 520     va_start(argptr, format);
 521
 522     int iLen = wxVsnprintf_(buf, len, format, argptr);
 523
 524     va_end(argptr);
 525
 526     return iLen;
 527 }
 528 #endif // wxSnprintf_
 529
 530 // ----------------------------------------------------------------------------
 531 // implement the standard IO functions for wide char if libc doesn't have them
 532 // ----------------------------------------------------------------------------
 533
 534 #ifdef wxNEED_FPUTWC
 535
 536 int wxFputs(const wchar_t *ws, FILE *stream)
 537 {
 538     // counting the number of wide characters written isn't worth the trouble,
 539     // simply distinguish between ok and error
 540     return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
 541 }
 542
 543 int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
 544 {
 545     wchar_t ws[2] = { wc, L'\0' };
 546
 547     return wxFputs(ws, stream);
 548 }
 549
 550 #endif // wxNEED_FPUTWC
 551
 552 // NB: we only implement va_list functions here, the ones taking ... are
 553 //     defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
 554 //     the definitions there to avoid duplicating them here
 555 #ifdef wxNEED_WPRINTF
 556
 557 // TODO: implement the scanf() functions
 558 int vwscanf(const wxChar *format, va_list argptr)
 559 {
 560     wxFAIL_MSG( _T("TODO") );
 561
 562     return -1;
 563 }
 564
 565 int vswscanf(const wxChar *ws, const wxChar *format, va_list argptr)
 566 {
 567     wxFAIL_MSG( _T("TODO") );
 568
 569     return -1;
 570 }
 571
 572 int vfwscanf(FILE *stream, const wxChar *format, va_list argptr)
 573 {
 574     wxFAIL_MSG( _T("TODO") );
 575
 576     return -1;
 577 }
 578
 579 #define vswprintf wxVsnprintf_
 580
 581 int vfwprintf(FILE *stream, const wxChar *format, va_list argptr)
 582 {
 583     wxString s;
 584     int rc = s.PrintfV(format, argptr);
 585
 586     if ( rc != -1 )
 587     {
 588         // we can't do much better without Unicode support in libc...
 589         if ( fprintf(stream, "%s", s.mb_str()) == -1 )
 590             return -1;
 591     }
 592
 593     return rc;
 594 }
 595
 596 int vwprintf(const wxChar *format, va_list argptr)
 597 {
 598     return wxVfprintf(stdout, format, argptr);
 599 }
 600
 601 #endif // wxNEED_WPRINTF
 602
 603 #ifdef wxNEED_PRINTF_CONVERSION
 604
 605 // ----------------------------------------------------------------------------
 606 // wxFormatConverter: class doing the "%s" -> "%ls" conversion
 607 // ----------------------------------------------------------------------------
 608
 609 /*
 610    Here are the gory details. We want to follow the Windows/MS conventions,
 611    that is to have
 612
 613    In ANSI mode:
 614
 615    format specifier         results in
 616    -----------------------------------
 617    %c, %hc, %hC             char
 618    %lc, %C, %lC             wchar_t
 619
 620    In Unicode mode:
 621
 622    format specifier         results in
 623    -----------------------------------
 624    %hc, %C, %hC             char
 625    %c, %lc, %lC             wchar_t
 626
 627
 628    while on POSIX systems we have %C identical to %lc and %c always means char
 629    (in any mode) while %lc always means wchar_t,
 630
 631    So to use native functions in order to get our semantics we must do the
 632    following translations in Unicode mode (nothing to do in ANSI mode):
 633
 634    wxWindows specifier      POSIX specifier
 635    ----------------------------------------
 636
 637    %hc, %C, %hC             %c
 638    %c                       %lc
 639
 640
 641    And, of course, the same should be done for %s as well.
 642 */
 643
 644 class wxFormatConverter
 645 {
 646 public:
 647     wxFormatConverter(const wxChar *format);
 648
 649     // notice that we only translated the string if m_fmtOrig == NULL (as set
 650     // by CopyAllBefore()), otherwise we should simply use the original format
 651     operator const wxChar *() const
 652         { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
 653
 654 private:
 655     // copy another character to the translated format: this function does the
 656     // copy if we are translating but doesn't do anything at all if we don't,
 657     // so we don't create the translated format string at all unless we really
 658     // need to (i.e. InsertFmtChar() is called)
 659     wxChar CopyFmtChar(wxChar ch)
 660     {
 661         if ( !m_fmtOrig )
 662         {
 663             // we're translating, do copy
 664             m_fmt += ch;
 665         }
 666         else
 667         {
 668             // simply increase the count which should be copied by
 669             // CopyAllBefore() later if needed
 670             m_nCopied++;
 671         }
 672
 673         return ch;
 674     }
 675
 676     // insert an extra character
 677     void InsertFmtChar(wxChar ch)
 678     {
 679         if ( m_fmtOrig )
 680         {
 681             // so far we haven't translated anything yet
 682             CopyAllBefore();
 683         }
 684
 685         m_fmt += ch;
 686     }
 687
 688     void CopyAllBefore()
 689     {
 690         wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
 691
 692         m_fmt = wxString(m_fmtOrig, m_nCopied);
 693
 694         // we won't need it any longer
 695         m_fmtOrig = NULL;
 696     }
 697
 698     static bool IsFlagChar(wxChar ch)
 699     {
 700         return ch == _T('-') || ch == _T('+') ||
 701                ch == _T('0') || ch == _T(' ') || ch == _T('#');
 702     }
 703
 704     void SkipDigits(const wxChar **ppc)
 705     {
 706         while ( **ppc >= _T('0') && **ppc <= _T('9') )
 707             CopyFmtChar(*(*ppc)++);
 708     }
 709
 710     // the translated format
 711     wxString m_fmt;
 712
 713     // the original format
 714     const wxChar *m_fmtOrig;
 715
 716     // the number of characters already copied
 717     size_t m_nCopied;
 718 };
 719
 720 wxFormatConverter::wxFormatConverter(const wxChar *format)
 721 {
 722     m_fmtOrig = format;
 723     m_nCopied = 0;
 724
 725     while ( *format )
 726     {
 727         if ( CopyFmtChar(*format++) == _T('%') )
 728         {
 729             // skip any flags
 730             while ( IsFlagChar(*format) )
 731                 CopyFmtChar(*format++);
 732
 733             // and possible width
 734             if ( *format == _T('*') )
 735                 CopyFmtChar(*format++);
 736             else
 737                 SkipDigits(&format);
 738
 739             // precision?
 740             if ( *format == _T('.') )
 741             {
 742                 SkipDigits(&format);
 743             }
 744
 745             // next we can have a size modifier
 746             enum
 747             {
 748                 Default,
 749                 Short,
 750                 Long
 751             } size;
 752
 753             switch ( *format )
 754             {
 755                 case _T('h'):
 756                     size = Short;
 757                     format++;
 758                     break;
 759
 760                 case _T('l'):
 761                     // "ll" has a different meaning!
 762                     if ( format[1] != _T('l') )
 763                     {
 764                         size = Long;
 765                         format++;
 766                         break;
 767                     }
 768                     //else: fall through
 769
 770                 default:
 771                     size = Default;
 772             }
 773
 774             // and finally we should have the type
 775             switch ( *format )
 776             {
 777                 case _T('C'):
 778                 case _T('S'):
 779                     // %C and %hC -> %c and %lC -> %lc
 780                     if ( size == Long )
 781                         CopyFmtChar(_T('l'));
 782
 783                     InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
 784                     break;
 785
 786                 case _T('c'):
 787                 case _T('s'):
 788                     // %c -> %lc but %hc stays %hc and %lc is still %lc
 789                     switch ( size )
 790                     {
 791                         case Default:
 792                             InsertFmtChar(_T('l'));
 793                             break;
 794
 795                         case Short:
 796                             CopyFmtChar(_T('h'));
 797                             break;
 798
 799                         case Long:
 800                             ;
 801                     }
 802                     // fall through
 803
 804                 default:
 805                     // nothing special to do
 806                     CopyFmtChar(*format++);
 807             }
 808         }
 809     }
 810 }
 811
 812 #else // !wxNEED_PRINTF_CONVERSION
 813     // no conversion necessary
 814     #define wxFormatConverter(x) (x)
 815 #endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
 816
 817 // ----------------------------------------------------------------------------
 818 // wxPrintf(), wxScanf() and relatives
 819 // ----------------------------------------------------------------------------
 820
 821 #if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
 822
 823 int wxScanf( const wxChar *format, ... )
 824 {
 825     va_list argptr;
 826     va_start(argptr, format);
 827
 828     int ret = vwscanf(wxFormatConverter(format), argptr );
 829
 830     va_end(argptr);
 831
 832     return ret;
 833 }
 834
 835 int wxSscanf( const wxChar *str, const wxChar *format, ... )
 836 {
 837     va_list argptr;
 838     va_start(argptr, format);
 839
 840     int ret = vswscanf( str, wxFormatConverter(format), argptr );
 841
 842     va_end(argptr);
 843
 844     return ret;
 845 }
 846
 847 int wxFscanf( FILE *stream, const wxChar *format, ... )
 848 {
 849     va_list argptr;
 850     va_start(argptr, format);
 851
 852     int ret = vfwscanf(stream, wxFormatConverter(format), argptr);
 853
 854     va_end(argptr);
 855
 856     return ret;
 857 }
 858
 859 int wxPrintf( const wxChar *format, ... )
 860 {
 861     va_list argptr;
 862     va_start(argptr, format);
 863
 864     int ret = vwprintf( wxFormatConverter(format), argptr );
 865
 866     va_end(argptr);
 867
 868     return ret;
 869 }
 870
 871 #ifndef wxSnprintf
 872 int wxSnprintf( wxChar *str, size_t size, const wxChar *format, ... )
 873 {
 874     va_list argptr;
 875     va_start(argptr, format);
 876
 877     int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
 878
 879     va_end(argptr);
 880
 881     return ret;
 882 }
 883 #endif // wxSnprintf
 884
 885 int wxSprintf( wxChar *str, const wxChar *format, ... )
 886 {
 887     va_list argptr;
 888     va_start(argptr, format);
 889
 890     // callers of wxSprintf() deserve what they get
 891     int ret = vswprintf( str, UINT_MAX, wxFormatConverter(format), argptr );
 892
 893     va_end(argptr);
 894
 895     return ret;
 896 }
 897
 898 int wxFprintf( FILE *stream, const wxChar *format, ... )
 899 {
 900     va_list argptr;
 901     va_start( argptr, format );
 902
 903     int ret = vfwprintf( stream, wxFormatConverter(format), argptr );
 904
 905     va_end(argptr);
 906
 907     return ret;
 908 }
 909
 910 int wxVsscanf( const wxChar *str, const wxChar *format, va_list argptr )
 911 {
 912     return vswscanf( str, wxFormatConverter(format), argptr );
 913 }
 914
 915 int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr )
 916 {
 917     return vfwprintf( stream, wxFormatConverter(format), argptr );
 918 }
 919
 920 int wxVprintf( const wxChar *format, va_list argptr )
 921 {
 922     return vwprintf( wxFormatConverter(format), argptr );
 923 }
 924
 925 #ifndef wxVsnprintf
 926 int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list argptr )
 927 {
 928     return vswprintf( str, size, wxFormatConverter(format), argptr );
 929 }
 930 #endif // wxVsnprintf
 931
 932 int wxVsprintf( wxChar *str, const wxChar *format, va_list argptr )
 933 {
 934     // same as for wxSprintf()
 935     return vswprintf(str, UINT_MAX, wxFormatConverter(format), argptr);
 936 }
 937
 938 #endif // wxNEED_PRINTF_CONVERSION
 939
 940 // ----------------------------------------------------------------------------
 941 // ctype.h stuff (currently unused)
 942 // ----------------------------------------------------------------------------
 943
 944 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 945 inline WORD wxMSW_ctype(wxChar ch)
 946 {
 947   WORD ret;
 948   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 949   return ret;
 950 }
 951
 952 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 953 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 954 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 955 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 956 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 957 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 958 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 959 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 960 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 961 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 962 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 963 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 964 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 965 #endif
 966
 967 #ifndef wxStrdup
 968 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 969 {
 970   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 971   wxChar *ret = (wxChar *) malloc(size);
 972   memcpy(ret, psz, size);
 973   return ret;
 974 }
 975 #endif
 976
 977 #ifndef wxStricmp
 978 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 979 {
 980   register wxChar c1, c2;
 981   do {
 982     c1 = wxTolower(*psz1++);
 983     c2 = wxTolower(*psz2++);
 984   } while ( c1 && (c1 == c2) );
 985   return c1 - c2;
 986 }
 987 #endif
 988
 989 #ifndef wxStricmp
 990 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
 991 {
 992   register wxChar c1, c2;
 993   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
 994   if (n) {
 995     if (c1 < c2) return -1;
 996     if (c1 > c2) return 1;
 997   }
 998   return 0;
 999 }
1000 #endif
1001
1002 #ifndef wxStrtok
1003 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
1004 {
1005     if (!psz)
1006     {
1007         psz = *save_ptr;
1008         if ( !psz )
1009             return NULL;
1010     }
1011
1012     psz += wxStrspn(psz, delim);
1013     if (!*psz)
1014     {
1015         *save_ptr = (wxChar *)NULL;
1016         return (wxChar *)NULL;
1017     }
1018
1019     wxChar *ret = psz;
1020     psz = wxStrpbrk(psz, delim);
1021     if (!psz)
1022     {
1023         *save_ptr = (wxChar*)NULL;
1024     }
1025     else
1026     {
1027         *psz = wxT('\0');
1028         *save_ptr = psz + 1;
1029     }
1030
1031     return ret;
1032 }
1033 #endif // wxStrtok
1034
1035 #ifndef wxSetlocale
1036 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
1037 {
1038     char *localeOld = setlocale(category, wxConvLocal.cWX2MB(locale));
1039
1040     return wxWCharBuffer(wxConvLocal.cMB2WC(localeOld));
1041 }
1042 #endif
1043
1044 // ----------------------------------------------------------------------------
1045 // string.h functions
1046 // ----------------------------------------------------------------------------
1047
1048 #ifdef wxNEED_WX_STRING_H
1049 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
1050 {
1051   wxChar *ret = dest;
1052   while (*dest) dest++;
1053   while ((*dest++ = *src++));
1054   return ret;
1055 }
1056
1057 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
1058 {
1059     // be careful here as the terminating NUL makes part of the string
1060     while ( *s != c )
1061     {
1062         if ( !*s++ )
1063             return NULL;
1064     }
1065
1066     return s;
1067 }
1068
1069 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
1070 {
1071   while ((*s1 == *s2) && *s1) s1++, s2++;
1072   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1073   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1074   return 0;
1075 }
1076
1077 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
1078 {
1079   wxChar *ret = dest;
1080   while ((*dest++ = *src++));
1081   return ret;
1082 }
1083
1084 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
1085 {
1086   wxChar *ret = dest;
1087   while (*dest) dest++;
1088   while (n && (*dest++ = *src++)) n--;
1089   return ret;
1090 }
1091
1092 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
1093 {
1094   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
1095   if (n) {
1096     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1097     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1098   }
1099   return 0;
1100 }
1101
1102 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
1103 {
1104   wxChar *ret = dest;
1105   while (n && (*dest++ = *src++)) n--;
1106   while (n) *dest++=0, n--; // the docs specify padding with zeroes
1107   return ret;
1108 }
1109
1110 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
1111 {
1112   while (*s && !wxStrchr(accept, *s))
1113       s++;
1114
1115   return *s ? s : NULL;
1116 }
1117
1118 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
1119 {
1120     const wxChar *ret = NULL;
1121     do
1122     {
1123         if ( *s == c )
1124             ret = s;
1125         s++;
1126     }
1127     while ( *s );
1128
1129     return ret;
1130 }
1131
1132 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
1133 {
1134   size_t len = 0;
1135   while (wxStrchr(accept, *s++)) len++;
1136   return len;
1137 }
1138
1139 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
1140 {
1141     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
1142
1143     // VZ: this is not exactly the most efficient string search algorithm...
1144
1145     const size_t len = wxStrlen(needle);
1146
1147     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
1148     {
1149         if ( !wxStrncmp(fnd, needle, len) )
1150             return fnd;
1151
1152         haystack = fnd + 1;
1153     }
1154
1155     return NULL;
1156 }
1157
1158 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
1159 {
1160   const wxChar *start = nptr;
1161
1162   // FIXME: only correct for C locale
1163   while (wxIsspace(*nptr)) nptr++;
1164   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1165   while (wxIsdigit(*nptr)) nptr++;
1166   if (*nptr == wxT('.')) {
1167     nptr++;
1168     while (wxIsdigit(*nptr)) nptr++;
1169   }
1170   if (*nptr == wxT('E') || *nptr == wxT('e')) {
1171     nptr++;
1172     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1173     while (wxIsdigit(*nptr)) nptr++;
1174   }
1175
1176   wxString data(nptr, nptr-start);
1177   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1178   char *rdat = wxMBSTRINGCAST dat;
1179   double ret = strtod(dat, &rdat);
1180
1181   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1182
1183   return ret;
1184 }
1185
1186 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
1187 {
1188   const wxChar *start = nptr;
1189
1190   // FIXME: only correct for C locale
1191   while (wxIsspace(*nptr)) nptr++;
1192   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1193   if (((base == 0) || (base == 16)) &&
1194       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
1195     nptr += 2;
1196     base = 16;
1197   }
1198   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
1199   else if (base == 0) base = 10;
1200
1201   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
1202          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
1203
1204   wxString data(nptr, nptr-start);
1205   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1206   char *rdat = wxMBSTRINGCAST dat;
1207   long int ret = strtol(dat, &rdat, base);
1208
1209   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1210
1211   return ret;
1212 }
1213 #endif // wxNEED_WX_STRING_H
1214
1215 #ifdef wxNEED_WX_STDIO_H
1216 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
1217 {
1218     char mode_buffer[10];
1219     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1220        mode_buffer[i] = (char) mode[i];
1221
1222     return fopen( wxConvFile.cWX2MB(path), mode_buffer );
1223 }
1224
1225 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
1226 {
1227     char mode_buffer[10];
1228     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1229        mode_buffer[i] = (char) mode[i];
1230
1231     return freopen( wxConvFile.cWX2MB(path), mode_buffer, stream );
1232 }
1233
1234 WXDLLEXPORT int wxRemove(const wxChar *path)
1235 {
1236     return remove( wxConvFile.cWX2MB(path) );
1237 }
1238
1239 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
1240 {
1241     return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
1242 }
1243 #endif
1244
1245 #ifndef wxAtof
1246 double   WXDLLEXPORT wxAtof(const wxChar *psz)
1247 {
1248   return atof(wxConvLocal.cWX2MB(psz));
1249 }
1250 #endif
1251
1252 #ifdef wxNEED_WX_STDLIB_H
1253 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
1254 {
1255   return atoi(wxConvLocal.cWX2MB(psz));
1256 }
1257
1258 long     WXDLLEXPORT wxAtol(const wxChar *psz)
1259 {
1260   return atol(wxConvLocal.cWX2MB(psz));
1261 }
1262
1263 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
1264 {
1265   static wxHashTable env;
1266
1267   // check if we already have stored the converted env var
1268   wxObject *data = env.Get(name);
1269   if (!data)
1270   {
1271     // nope, retrieve it,
1272 #if wxUSE_UNICODE
1273     wxCharBuffer buffer = wxConvLocal.cWX2MB(name);
1274     // printf( "buffer %s\n", (const char*) buffer );
1275     const char *val = getenv( (const char *)buffer );
1276 #else
1277     const char *val = getenv( name );
1278 #endif
1279
1280     if (!val) return (wxChar *)NULL;
1281     // printf( "home %s\n", val );
1282
1283     // convert it,
1284 #ifdef wxUSE_UNICODE
1285     data = (wxObject *)new wxString(val, wxConvLocal);
1286 #else
1287     data = (wxObject *)new wxString(val);
1288 #endif
1289
1290     // and store it
1291     env.Put(name, data);
1292   }
1293   // return converted env var
1294   return (wxChar *)((wxString *)data)->c_str();
1295 }
1296
1297 int WXDLLEXPORT wxSystem(const wxChar *psz)
1298 {
1299     return system(wxConvLocal.cWX2MB(psz));
1300 }
1301
1302 #endif
1303
1304 #ifdef wxNEED_WX_TIME_H
1305 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
1306 {
1307     if (!max) return 0;
1308
1309     char *buf = (char *)malloc(max);
1310     size_t ret = strftime(buf, max, wxConvLocal.cWX2MB(fmt), tm);
1311     if (ret)
1312     {
1313         wxStrcpy(s, wxConvLocal.cMB2WX(buf));
1314         free(buf);
1315         return wxStrlen(s);
1316     }
1317     else
1318     {
1319         free(buf);
1320         *s = 0;
1321         return 0;
1322   }
1323 }
1324 #endif