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 licence
  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
  34 #ifndef __WXWINCE__
  35 #include <time.h>
  36 #include <locale.h>
  37 #else
  38 #include "wx/msw/wince/time.h"
  39 #endif
  40
  41 #ifndef WX_PRECOMP
  42   #include "wx/defs.h"
  43   #include "wx/wxchar.h"
  44   #include "wx/string.h"
  45   #include "wx/hash.h"
  46 #endif
  47
  48 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
  49   #include <windef.h>
  50   #include <winbase.h>
  51   #include <winnls.h>
  52   #include <winnt.h>
  53 #endif
  54
  55 #if defined(__MWERKS__) && __MSL__ >= 0x6000
  56 using namespace std ;
  57 #endif
  58
  59 #ifdef __WXMAC__
  60     #include "wx/mac/private.h"
  61 #endif
  62
  63 #if wxUSE_WCHAR_T
  64 size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
  65 {
  66   // assume that we have mbsrtowcs() too if we have wcsrtombs()
  67 #if HAVE_WCSRTOMBS
  68   mbstate_t mbstate;
  69   memset(&mbstate, 0, sizeof(mbstate_t));
  70 #endif
  71
  72   if (buf) {
  73     if (!n || !*psz) {
  74       if (n) *buf = wxT('\0');
  75       return 0;
  76     }
  77 #ifdef HAVE_WCSRTOMBS
  78     return mbsrtowcs(buf, &psz, n, &mbstate);
  79 #else
  80     return mbstowcs(buf, psz, n);
  81 #endif
  82   }
  83
  84 #ifdef HAVE_WCSRTOMBS
  85   return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
  86 #else
  87   return mbstowcs((wchar_t *) NULL, psz, 0);
  88 #endif
  89 }
  90
  91 size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
  92 {
  93 #if HAVE_WCSRTOMBS
  94   mbstate_t mbstate;
  95   memset(&mbstate, 0, sizeof(mbstate_t));
  96 #endif
  97
  98   if (buf) {
  99     if (!n || !*pwz) {
 100       // glibc2.1 chokes on null input
 101       if (n) *buf = '\0';
 102       return 0;
 103     }
 104 #if HAVE_WCSRTOMBS
 105     return wcsrtombs(buf, &pwz, n, &mbstate);
 106 #else
 107     return wcstombs(buf, pwz, n);
 108 #endif
 109   }
 110
 111 #if HAVE_WCSRTOMBS
 112   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
 113 #else
 114   return wcstombs((char *) NULL, pwz, 0);
 115 #endif
 116 }
 117 #endif // wxUSE_WCHAR_T
 118
 119 bool WXDLLEXPORT wxOKlibc()
 120 {
 121 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__) && !defined(__WINE__)
 122   // glibc 2.0 uses UTF-8 even when it shouldn't
 123   wchar_t res = 0;
 124   if ((MB_CUR_MAX == 2) &&
 125       (wxMB2WC(&res, "\xdd\xa5", 1) == 1) &&
 126       (res==0x765)) {
 127     // this is UTF-8 allright, check whether that's what we want
 128     char *cur_locale = setlocale(LC_CTYPE, NULL);
 129     if ((strlen(cur_locale) < 4) ||
 130             (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8")) ||
 131             (strcasecmp(cur_locale + strlen(cur_locale) - 5, "utf-8"))) {
 132       // nope, don't use libc conversion
 133       return FALSE;
 134     }
 135   }
 136 #endif
 137   return TRUE;
 138 }
 139
 140 // ============================================================================
 141 // printf() functions business
 142 // ============================================================================
 143
 144 // special test mode: define all functions below even if we don't really need
 145 // them to be able to test them
 146 #ifdef wxTEST_PRINTF
 147     #undef wxFprintf
 148     #undef wxPrintf
 149     #undef wxSprintf
 150     #undef wxVfprintf
 151     #undef wxVsprintf
 152     #undef wxVprintf
 153     #undef wxVsnprintf_
 154     #undef wxSnprintf_
 155
 156     #define wxNEED_WPRINTF
 157
 158     int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr );
 159 #endif
 160
 161 // ----------------------------------------------------------------------------
 162 // implement [v]snprintf() if the system doesn't provide a safe one
 163 // ----------------------------------------------------------------------------
 164
 165 #if !defined(wxVsnprintf_)
 166 int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
 167                              const wxChar *format, va_list argptr)
 168 {
 169     // buffer to avoid dynamic memory allocation each time for small strings
 170     char szScratch[1024];
 171
 172     // number of characters in the buffer so far, must be less than lenMax
 173     size_t lenCur = 0;
 174
 175     for ( size_t n = 0; ; n++ )
 176     {
 177         const wxChar chCur = format[n];
 178
 179         if ( chCur == wxT('%') )
 180         {
 181             static char s_szFlags[256] = "%";
 182             size_t flagofs = 1;
 183             bool adj_left = FALSE,
 184                  in_prec = FALSE,
 185                  prec_dot = FALSE,
 186                  done = FALSE;
 187             int ilen = 0;
 188             size_t min_width = 0,
 189                    max_width = wxSTRING_MAXLEN;
 190             do
 191             {
 192
 193 #define CHECK_PREC \
 194                 if (in_prec && !prec_dot) \
 195                 { \
 196                     s_szFlags[flagofs++] = '.'; \
 197                     prec_dot = TRUE; \
 198                 }
 199
 200 #define APPEND_CH(ch) \
 201                 if ( lenCur == lenMax ) \
 202                     return -1; \
 203                 \
 204                 buf[lenCur++] = ch
 205
 206 #define APPEND_STR(s) \
 207                 { \
 208                     for ( const wxChar *p = s; *p; p++ ) \
 209                     { \
 210                         APPEND_CH(*p); \
 211                     } \
 212                 }
 213
 214                 // what follows '%'?
 215                 const wxChar ch = format[++n];
 216                 switch ( ch )
 217                 {
 218                     case wxT('\0'):
 219                         APPEND_CH(_T('\0'));
 220
 221                         done = TRUE;
 222                         break;
 223
 224                     case wxT('%'):
 225                         APPEND_CH(_T('%'));
 226                         done = TRUE;
 227                         break;
 228
 229                     case wxT('#'):
 230                     case wxT('0'):
 231                     case wxT(' '):
 232                     case wxT('+'):
 233                     case wxT('\''):
 234                         CHECK_PREC
 235                         s_szFlags[flagofs++] = ch;
 236                         break;
 237
 238                     case wxT('-'):
 239                         CHECK_PREC
 240                         adj_left = TRUE;
 241                         s_szFlags[flagofs++] = ch;
 242                         break;
 243
 244                     case wxT('.'):
 245                         CHECK_PREC
 246                         in_prec = TRUE;
 247                         prec_dot = FALSE;
 248                         max_width = 0;
 249                         // dot will be auto-added to s_szFlags if non-negative
 250                         // number follows
 251                         break;
 252
 253                     case wxT('h'):
 254                         ilen = -1;
 255                         CHECK_PREC
 256                         s_szFlags[flagofs++] = ch;
 257                         break;
 258
 259                     case wxT('l'):
 260                         ilen = 1;
 261                         CHECK_PREC
 262                         s_szFlags[flagofs++] = ch;
 263                         break;
 264
 265                     case wxT('q'):
 266                     case wxT('L'):
 267                         ilen = 2;
 268                         CHECK_PREC
 269                         s_szFlags[flagofs++] = ch;
 270                         break;
 271
 272                     case wxT('Z'):
 273                         ilen = 3;
 274                         CHECK_PREC
 275                         s_szFlags[flagofs++] = ch;
 276                         break;
 277
 278                     case wxT('*'):
 279                         {
 280                             int len = va_arg(argptr, int);
 281                             if (in_prec)
 282                             {
 283                                 if (len<0) break;
 284                                 CHECK_PREC
 285                                     max_width = len;
 286                             }
 287                             else
 288                             {
 289                                 if (len<0)
 290                                 {
 291                                     adj_left = !adj_left;
 292                                     s_szFlags[flagofs++] = '-';
 293                                     len = -len;
 294                                 }
 295                                 min_width = len;
 296                             }
 297                             flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
 298                         }
 299                         break;
 300
 301                     case wxT('1'): case wxT('2'): case wxT('3'):
 302                     case wxT('4'): case wxT('5'): case wxT('6'):
 303                     case wxT('7'): case wxT('8'): case wxT('9'):
 304                         {
 305                             int len = 0;
 306                             CHECK_PREC
 307                             while ( (format[n] >= wxT('0')) &&
 308                                     (format[n] <= wxT('9')) )
 309                             {
 310                                 s_szFlags[flagofs++] = format[n];
 311                                 len = len*10 + (format[n] - wxT('0'));
 312                                 n++;
 313                             }
 314
 315                             if (in_prec)
 316                                 max_width = len;
 317                             else
 318                                 min_width = len;
 319
 320                             n--; // the main loop pre-increments n again
 321                         }
 322                         break;
 323
 324                     case wxT('d'):
 325                     case wxT('i'):
 326                     case wxT('o'):
 327                     case wxT('u'):
 328                     case wxT('x'):
 329                     case wxT('X'):
 330                         CHECK_PREC
 331                         s_szFlags[flagofs++] = ch;
 332                         s_szFlags[flagofs] = '\0';
 333                         if (ilen == 0 )
 334                         {
 335                             int val = va_arg(argptr, int);
 336                             ::sprintf(szScratch, s_szFlags, val);
 337                         }
 338                         else if (ilen == -1)
 339                         {
 340                             // NB: 'short int' value passed through '...'
 341                             //      is promoted to 'int', so we have to get
 342                             //      an int from stack even if we need a short
 343                             short int val = (short int) va_arg(argptr, int);
 344                             ::sprintf(szScratch, s_szFlags, val);
 345                         }
 346                         else if (ilen == 1)
 347                         {
 348                             long int val = va_arg(argptr, long int);
 349                             ::sprintf(szScratch, s_szFlags, val);
 350                         }
 351                         else if (ilen == 2)
 352                         {
 353 #if SIZEOF_LONG_LONG
 354                             long long int val = va_arg(argptr, long long int);
 355                             ::sprintf(szScratch, s_szFlags, val);
 356 #else // !long long
 357                             long int val = va_arg(argptr, long int);
 358                             ::sprintf(szScratch, s_szFlags, val);
 359 #endif // long long/!long long
 360                         }
 361                         else if (ilen == 3)
 362                         {
 363                             size_t val = va_arg(argptr, size_t);
 364                             ::sprintf(szScratch, s_szFlags, val);
 365                         }
 366
 367                         {
 368                             const wxMB2WXbuf tmp =
 369                                 wxConvLibc.cMB2WX(szScratch);
 370                             APPEND_STR(tmp);
 371                         }
 372
 373                         done = TRUE;
 374                         break;
 375
 376                     case wxT('e'):
 377                     case wxT('E'):
 378                     case wxT('f'):
 379                     case wxT('g'):
 380                     case wxT('G'):
 381                         CHECK_PREC
 382                         s_szFlags[flagofs++] = ch;
 383                         s_szFlags[flagofs] = '\0';
 384                         if (ilen == 2)
 385                         {
 386                             long double val = va_arg(argptr, long double);
 387                             ::sprintf(szScratch, s_szFlags, val);
 388                         }
 389                         else
 390                         {
 391                             double val = va_arg(argptr, double);
 392                             ::sprintf(szScratch, s_szFlags, val);
 393                         }
 394
 395                         {
 396                             const wxMB2WXbuf tmp =
 397                                 wxConvLibc.cMB2WX(szScratch);
 398                             APPEND_STR(tmp);
 399                         }
 400
 401                         done = TRUE;
 402                         break;
 403
 404                     case wxT('p'):
 405                         {
 406                             void *val = va_arg(argptr, void *);
 407                             CHECK_PREC
 408                             s_szFlags[flagofs++] = ch;
 409                             s_szFlags[flagofs] = '\0';
 410                             ::sprintf(szScratch, s_szFlags, val);
 411
 412                             const wxMB2WXbuf tmp =
 413                                 wxConvLibc.cMB2WX(szScratch);
 414                             APPEND_STR(tmp);
 415
 416                             done = TRUE;
 417                         }
 418                         break;
 419
 420                     case wxT('c'):
 421                         {
 422                             wxChar val = va_arg(argptr, int);
 423                             // we don't need to honor padding here, do we?
 424                             APPEND_CH(val);
 425
 426                             done = TRUE;
 427                         }
 428                         break;
 429
 430                     case wxT('s'):
 431                         if (ilen == -1)
 432                         {
 433                             // wx extension: we'll let %hs mean non-Unicode
 434                             // strings
 435                             char *val = va_arg(argptr, char *);
 436 #if wxUSE_UNICODE
 437                             // ASCII->Unicode constructor handles max_width
 438                             // right
 439                             wxString s(val, wxConvLibc, max_width);
 440 #else
 441                             size_t len = wxSTRING_MAXLEN;
 442                             if (val)
 443                             {
 444                                 for ( len = 0;
 445                                       val[len] && (len < max_width);
 446                                       len++ )
 447                                     ;
 448                             }
 449                             else
 450                                 val = wxT("(null)");
 451                             wxString s(val, len);
 452 #endif
 453                             if (s.Len() < min_width)
 454                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 455
 456                             APPEND_STR(s);
 457                         }
 458                         else
 459                         {
 460                             wxChar *val = va_arg(argptr, wxChar *);
 461                             size_t len = wxSTRING_MAXLEN;
 462                             if (val)
 463                             {
 464                                 for ( len = 0;
 465                                       val[len] && (len < max_width);
 466                                       len++ )
 467                                     ;
 468                             }
 469                             else
 470                                 val = wxT("(null)");
 471
 472                             wxString s(val, len);
 473                             if (s.Len() < min_width)
 474                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 475
 476                             APPEND_STR(s);
 477                         }
 478                         done = TRUE;
 479                         break;
 480
 481                     case wxT('n'):
 482                         if (ilen == 0)
 483                         {
 484                             int *val = va_arg(argptr, int *);
 485                             *val = lenCur;
 486                         }
 487                         else if (ilen == -1)
 488                         {
 489                             short int *val = va_arg(argptr, short int *);
 490                             *val = lenCur;
 491                         }
 492                         else if (ilen >= 1)
 493                         {
 494                             long int *val = va_arg(argptr, long int *);
 495                             *val = lenCur;
 496                         }
 497                         done = TRUE;
 498                         break;
 499
 500                     default:
 501                         // bad format, leave unchanged
 502                         APPEND_CH(_T('%'));
 503                         APPEND_CH(ch);
 504                         done = TRUE;
 505                         break;
 506                 }
 507             }
 508             while (!done);
 509         }
 510         else
 511         {
 512             APPEND_CH(chCur);
 513         }
 514
 515         // terminating NUL?
 516         if ( !chCur )
 517             break;
 518     }
 519
 520     return lenCur;
 521 }
 522
 523 #undef APPEND_CH
 524 #undef APPEND_STR
 525 #undef CHECK_PREC
 526
 527 #endif // !wxVsnprintfA
 528
 529 #if !defined(wxSnprintf_)
 530 int WXDLLEXPORT wxSnprintf_(wxChar *buf, size_t len, const wxChar *format, ...)
 531 {
 532     va_list argptr;
 533     va_start(argptr, format);
 534
 535     int iLen = wxVsnprintf_(buf, len, format, argptr);
 536
 537     va_end(argptr);
 538
 539     return iLen;
 540 }
 541 #endif // wxSnprintf_
 542
 543 // ----------------------------------------------------------------------------
 544 // implement the standard IO functions for wide char if libc doesn't have them
 545 // ----------------------------------------------------------------------------
 546
 547 #ifdef wxNEED_FPUTWC
 548
 549 int wxFputs(const wchar_t *ws, FILE *stream)
 550 {
 551     // counting the number of wide characters written isn't worth the trouble,
 552     // simply distinguish between ok and error
 553     return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
 554 }
 555
 556 int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
 557 {
 558     wchar_t ws[2] = { wc, L'\0' };
 559
 560     return wxFputs(ws, stream);
 561 }
 562
 563 #endif // wxNEED_FPUTWC
 564
 565 // NB: we only implement va_list functions here, the ones taking ... are
 566 //     defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
 567 //     the definitions there to avoid duplicating them here
 568 #ifdef wxNEED_WPRINTF
 569
 570 // TODO: implement the scanf() functions
 571 int vwscanf(const wxChar *format, va_list argptr)
 572 {
 573     wxFAIL_MSG( _T("TODO") );
 574
 575     return -1;
 576 }
 577
 578 int vswscanf(const wxChar *ws, const wxChar *format, va_list argptr)
 579 {
 580     wxFAIL_MSG( _T("TODO") );
 581
 582     return -1;
 583 }
 584
 585 int vfwscanf(FILE *stream, const wxChar *format, va_list argptr)
 586 {
 587     wxFAIL_MSG( _T("TODO") );
 588
 589     return -1;
 590 }
 591
 592 #define vswprintf wxVsnprintf_
 593
 594 int vfwprintf(FILE *stream, const wxChar *format, va_list argptr)
 595 {
 596     wxString s;
 597     int rc = s.PrintfV(format, argptr);
 598
 599     if ( rc != -1 )
 600     {
 601         // we can't do much better without Unicode support in libc...
 602         if ( fprintf(stream, "%s", s.mb_str()) == -1 )
 603             return -1;
 604     }
 605
 606     return rc;
 607 }
 608
 609 int vwprintf(const wxChar *format, va_list argptr)
 610 {
 611     return wxVfprintf(stdout, format, argptr);
 612 }
 613
 614 #endif // wxNEED_WPRINTF
 615
 616 #ifdef wxNEED_PRINTF_CONVERSION
 617
 618 // ----------------------------------------------------------------------------
 619 // wxFormatConverter: class doing the "%s" -> "%ls" conversion
 620 // ----------------------------------------------------------------------------
 621
 622 /*
 623    Here are the gory details. We want to follow the Windows/MS conventions,
 624    that is to have
 625
 626    In ANSI mode:
 627
 628    format specifier         results in
 629    -----------------------------------
 630    %c, %hc, %hC             char
 631    %lc, %C, %lC             wchar_t
 632
 633    In Unicode mode:
 634
 635    format specifier         results in
 636    -----------------------------------
 637    %hc, %C, %hC             char
 638    %c, %lc, %lC             wchar_t
 639
 640
 641    while on POSIX systems we have %C identical to %lc and %c always means char
 642    (in any mode) while %lc always means wchar_t,
 643
 644    So to use native functions in order to get our semantics we must do the
 645    following translations in Unicode mode (nothing to do in ANSI mode):
 646
 647    wxWindows specifier      POSIX specifier
 648    ----------------------------------------
 649
 650    %hc, %C, %hC             %c
 651    %c                       %lc
 652
 653
 654    And, of course, the same should be done for %s as well.
 655 */
 656
 657 class wxFormatConverter
 658 {
 659 public:
 660     wxFormatConverter(const wxChar *format);
 661
 662     // notice that we only translated the string if m_fmtOrig == NULL (as set
 663     // by CopyAllBefore()), otherwise we should simply use the original format
 664     operator const wxChar *() const
 665         { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
 666
 667 private:
 668     // copy another character to the translated format: this function does the
 669     // copy if we are translating but doesn't do anything at all if we don't,
 670     // so we don't create the translated format string at all unless we really
 671     // need to (i.e. InsertFmtChar() is called)
 672     wxChar CopyFmtChar(wxChar ch)
 673     {
 674         if ( !m_fmtOrig )
 675         {
 676             // we're translating, do copy
 677             m_fmt += ch;
 678         }
 679         else
 680         {
 681             // simply increase the count which should be copied by
 682             // CopyAllBefore() later if needed
 683             m_nCopied++;
 684         }
 685
 686         return ch;
 687     }
 688
 689     // insert an extra character
 690     void InsertFmtChar(wxChar ch)
 691     {
 692         if ( m_fmtOrig )
 693         {
 694             // so far we haven't translated anything yet
 695             CopyAllBefore();
 696         }
 697
 698         m_fmt += ch;
 699     }
 700
 701     void CopyAllBefore()
 702     {
 703         wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
 704
 705         m_fmt = wxString(m_fmtOrig, m_nCopied);
 706
 707         // we won't need it any longer
 708         m_fmtOrig = NULL;
 709     }
 710
 711     static bool IsFlagChar(wxChar ch)
 712     {
 713         return ch == _T('-') || ch == _T('+') ||
 714                ch == _T('0') || ch == _T(' ') || ch == _T('#');
 715     }
 716
 717     void SkipDigits(const wxChar **ppc)
 718     {
 719         while ( **ppc >= _T('0') && **ppc <= _T('9') )
 720             CopyFmtChar(*(*ppc)++);
 721     }
 722
 723     // the translated format
 724     wxString m_fmt;
 725
 726     // the original format
 727     const wxChar *m_fmtOrig;
 728
 729     // the number of characters already copied
 730     size_t m_nCopied;
 731 };
 732
 733 wxFormatConverter::wxFormatConverter(const wxChar *format)
 734 {
 735     m_fmtOrig = format;
 736     m_nCopied = 0;
 737
 738     while ( *format )
 739     {
 740         if ( CopyFmtChar(*format++) == _T('%') )
 741         {
 742             // skip any flags
 743             while ( IsFlagChar(*format) )
 744                 CopyFmtChar(*format++);
 745
 746             // and possible width
 747             if ( *format == _T('*') )
 748                 CopyFmtChar(*format++);
 749             else
 750                 SkipDigits(&format);
 751
 752             // precision?
 753             if ( *format == _T('.') )
 754             {
 755                 SkipDigits(&format);
 756             }
 757
 758             // next we can have a size modifier
 759             enum
 760             {
 761                 Default,
 762                 Short,
 763                 Long
 764             } size;
 765
 766             switch ( *format )
 767             {
 768                 case _T('h'):
 769                     size = Short;
 770                     format++;
 771                     break;
 772
 773                 case _T('l'):
 774                     // "ll" has a different meaning!
 775                     if ( format[1] != _T('l') )
 776                     {
 777                         size = Long;
 778                         format++;
 779                         break;
 780                     }
 781                     //else: fall through
 782
 783                 default:
 784                     size = Default;
 785             }
 786
 787             // and finally we should have the type
 788             switch ( *format )
 789             {
 790                 case _T('C'):
 791                 case _T('S'):
 792                     // %C and %hC -> %c and %lC -> %lc
 793                     if ( size == Long )
 794                         CopyFmtChar(_T('l'));
 795
 796                     InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
 797                     break;
 798
 799                 case _T('c'):
 800                 case _T('s'):
 801                     // %c -> %lc but %hc stays %hc and %lc is still %lc
 802                     switch ( size )
 803                     {
 804                         case Default:
 805                             InsertFmtChar(_T('l'));
 806                             break;
 807
 808                         case Short:
 809                             CopyFmtChar(_T('h'));
 810                             break;
 811
 812                         case Long:
 813                             ;
 814                     }
 815                     // fall through
 816
 817                 default:
 818                     // nothing special to do
 819                     CopyFmtChar(*format++);
 820             }
 821         }
 822     }
 823 }
 824
 825 #else // !wxNEED_PRINTF_CONVERSION
 826     // no conversion necessary
 827     #define wxFormatConverter(x) (x)
 828 #endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
 829
 830 // ----------------------------------------------------------------------------
 831 // wxPrintf(), wxScanf() and relatives
 832 // ----------------------------------------------------------------------------
 833
 834 #if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
 835
 836 int wxScanf( const wxChar *format, ... )
 837 {
 838     va_list argptr;
 839     va_start(argptr, format);
 840
 841     int ret = vwscanf(wxFormatConverter(format), argptr );
 842
 843     va_end(argptr);
 844
 845     return ret;
 846 }
 847
 848 int wxSscanf( const wxChar *str, const wxChar *format, ... )
 849 {
 850     va_list argptr;
 851     va_start(argptr, format);
 852
 853     int ret = vswscanf( str, wxFormatConverter(format), argptr );
 854
 855     va_end(argptr);
 856
 857     return ret;
 858 }
 859
 860 int wxFscanf( FILE *stream, const wxChar *format, ... )
 861 {
 862     va_list argptr;
 863     va_start(argptr, format);
 864     int ret = vfwscanf(stream, wxFormatConverter(format), argptr);
 865
 866     va_end(argptr);
 867
 868     return ret;
 869 }
 870
 871 int wxPrintf( const wxChar *format, ... )
 872 {
 873     va_list argptr;
 874     va_start(argptr, format);
 875
 876     int ret = vwprintf( wxFormatConverter(format), argptr );
 877
 878     va_end(argptr);
 879
 880     return ret;
 881 }
 882
 883 #ifndef wxSnprintf
 884 int wxSnprintf( wxChar *str, size_t size, const wxChar *format, ... )
 885 {
 886     va_list argptr;
 887     va_start(argptr, format);
 888
 889     int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
 890
 891     va_end(argptr);
 892
 893     return ret;
 894 }
 895 #endif // wxSnprintf
 896
 897 int wxSprintf( wxChar *str, const wxChar *format, ... )
 898 {
 899     va_list argptr;
 900     va_start(argptr, format);
 901
 902     // callers of wxSprintf() deserve what they get
 903     int ret = vswprintf( str, UINT_MAX, wxFormatConverter(format), argptr );
 904
 905     va_end(argptr);
 906
 907     return ret;
 908 }
 909
 910 int wxFprintf( FILE *stream, const wxChar *format, ... )
 911 {
 912     va_list argptr;
 913     va_start( argptr, format );
 914
 915     int ret = vfwprintf( stream, wxFormatConverter(format), argptr );
 916
 917     va_end(argptr);
 918
 919     return ret;
 920 }
 921
 922 int wxVsscanf( const wxChar *str, const wxChar *format, va_list argptr )
 923 {
 924     return vswscanf( str, wxFormatConverter(format), argptr );
 925 }
 926
 927 int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr )
 928 {
 929     return vfwprintf( stream, wxFormatConverter(format), argptr );
 930 }
 931
 932 int wxVprintf( const wxChar *format, va_list argptr )
 933 {
 934     return vwprintf( wxFormatConverter(format), argptr );
 935 }
 936
 937 #ifndef wxVsnprintf
 938 int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list argptr )
 939 {
 940     return vswprintf( str, size, wxFormatConverter(format), argptr );
 941 }
 942 #endif // wxVsnprintf
 943
 944 int wxVsprintf( wxChar *str, const wxChar *format, va_list argptr )
 945 {
 946     // same as for wxSprintf()
 947     return vswprintf(str, UINT_MAX, wxFormatConverter(format), argptr);
 948 }
 949
 950 #endif // wxNEED_PRINTF_CONVERSION
 951
 952 #if wxUSE_WCHAR_T
 953
 954 // ----------------------------------------------------------------------------
 955 // ctype.h stuff (currently unused)
 956 // ----------------------------------------------------------------------------
 957
 958 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 959 inline WORD wxMSW_ctype(wxChar ch)
 960 {
 961   WORD ret;
 962   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 963   return ret;
 964 }
 965
 966 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 967 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 968 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 969 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 970 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 971 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 972 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 973 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 974 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 975 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 976 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 977 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 978 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 979 #endif
 980
 981 #ifndef wxStrdupA
 982
 983 WXDLLEXPORT char *wxStrdupA(const char *s)
 984 {
 985     return strcpy((char *)malloc(strlen(s) + 1), s);
 986 }
 987
 988 #endif // wxStrdupA
 989
 990 #ifndef wxStrdupW
 991
 992 WXDLLEXPORT wchar_t * wxStrdupW(const wchar_t *pwz)
 993 {
 994   size_t size = (wxWcslen(pwz) + 1) * sizeof(wchar_t);
 995   wchar_t *ret = (wchar_t *) malloc(size);
 996   memcpy(ret, pwz, size);
 997   return ret;
 998 }
 999
1000 #endif // wxStrdupW
1001
1002 #ifndef wxStricmp
1003 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
1004 {
1005   register wxChar c1, c2;
1006   do {
1007     c1 = wxTolower(*psz1++);
1008     c2 = wxTolower(*psz2++);
1009   } while ( c1 && (c1 == c2) );
1010   return c1 - c2;
1011 }
1012 #endif
1013
1014 #ifndef wxStricmp
1015 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
1016 {
1017   // initialize the variables just to suppress stupid gcc warning
1018   register wxChar c1 = 0, c2 = 0;
1019   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
1020   if (n) {
1021     if (c1 < c2) return -1;
1022     if (c1 > c2) return 1;
1023   }
1024   return 0;
1025 }
1026 #endif
1027
1028 #ifndef wxSetlocale
1029 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
1030 {
1031     char *localeOld = setlocale(category, wxConvLocal.cWX2MB(locale));
1032
1033     return wxWCharBuffer(wxConvLocal.cMB2WC(localeOld));
1034 }
1035 #endif
1036
1037 // ----------------------------------------------------------------------------
1038 // string.h functions
1039 // ----------------------------------------------------------------------------
1040
1041 #ifdef wxNEED_WX_STRING_H
1042 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
1043 {
1044   wxChar *ret = dest;
1045   while (*dest) dest++;
1046   while ((*dest++ = *src++));
1047   return ret;
1048 }
1049
1050 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
1051 {
1052     // be careful here as the terminating NUL makes part of the string
1053     while ( *s != c )
1054     {
1055         if ( !*s++ )
1056             return NULL;
1057     }
1058
1059     return s;
1060 }
1061
1062 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
1063 {
1064   while ((*s1 == *s2) && *s1) s1++, s2++;
1065   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1066   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1067   return 0;
1068 }
1069
1070 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
1071 {
1072   wxChar *ret = dest;
1073   while ((*dest++ = *src++));
1074   return ret;
1075 }
1076
1077 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
1078 {
1079   wxChar *ret = dest;
1080   while (*dest) dest++;
1081   while (n && (*dest++ = *src++)) n--;
1082   return ret;
1083 }
1084
1085 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
1086 {
1087   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
1088   if (n) {
1089     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1090     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1091   }
1092   return 0;
1093 }
1094
1095 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
1096 {
1097   wxChar *ret = dest;
1098   while (n && (*dest++ = *src++)) n--;
1099   while (n) *dest++=0, n--; // the docs specify padding with zeroes
1100   return ret;
1101 }
1102
1103 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
1104 {
1105   while (*s && !wxStrchr(accept, *s))
1106       s++;
1107
1108   return *s ? s : NULL;
1109 }
1110
1111 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
1112 {
1113     const wxChar *ret = NULL;
1114     do
1115     {
1116         if ( *s == c )
1117             ret = s;
1118         s++;
1119     }
1120     while ( *s );
1121
1122     return ret;
1123 }
1124
1125 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
1126 {
1127   size_t len = 0;
1128   while (wxStrchr(accept, *s++)) len++;
1129   return len;
1130 }
1131
1132 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
1133 {
1134     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
1135
1136     // VZ: this is not exactly the most efficient string search algorithm...
1137
1138     const size_t len = wxStrlen(needle);
1139
1140     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
1141     {
1142         if ( !wxStrncmp(fnd, needle, len) )
1143             return fnd;
1144
1145         haystack = fnd + 1;
1146     }
1147
1148     return NULL;
1149 }
1150
1151 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
1152 {
1153   const wxChar *start = nptr;
1154
1155   // FIXME: only correct for C locale
1156   while (wxIsspace(*nptr)) nptr++;
1157   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1158   while (wxIsdigit(*nptr)) nptr++;
1159   if (*nptr == wxT('.')) {
1160     nptr++;
1161     while (wxIsdigit(*nptr)) nptr++;
1162   }
1163   if (*nptr == wxT('E') || *nptr == wxT('e')) {
1164     nptr++;
1165     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1166     while (wxIsdigit(*nptr)) nptr++;
1167   }
1168
1169   wxString data(nptr, nptr-start);
1170   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1171   char *rdat = wxMBSTRINGCAST dat;
1172   double ret = strtod(dat, &rdat);
1173
1174   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1175
1176   return ret;
1177 }
1178
1179 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
1180 {
1181   const wxChar *start = nptr;
1182
1183   // FIXME: only correct for C locale
1184   while (wxIsspace(*nptr)) nptr++;
1185   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1186   if (((base == 0) || (base == 16)) &&
1187       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
1188     nptr += 2;
1189     base = 16;
1190   }
1191   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
1192   else if (base == 0) base = 10;
1193
1194   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
1195          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
1196
1197   wxString data(nptr, nptr-start);
1198   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1199   char *rdat = wxMBSTRINGCAST dat;
1200   long int ret = strtol(dat, &rdat, base);
1201
1202   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1203
1204   return ret;
1205 }
1206 #endif // wxNEED_WX_STRING_H
1207
1208 #if defined(__WXMAC__) && !defined(__DARWIN__)
1209 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
1210 {
1211     return fopen( wxMacStringToCString(path), mode );
1212 }
1213
1214 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
1215 {
1216     return freopen( wxMacStringToCString(path), mode, stream );
1217 }
1218
1219 WXDLLEXPORT int wxRemove(const wxChar *path)
1220 {
1221     return remove( wxMacStringToCString(path) );
1222 }
1223
1224 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
1225 {
1226     return rename( wxMacStringToCString(oldpath), wxMacStringToCString(newpath) );
1227 }
1228 #endif
1229
1230 #ifdef wxNEED_WX_STDIO_H
1231 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
1232 {
1233     char mode_buffer[10];
1234     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1235        mode_buffer[i] = (char) mode[i];
1236
1237     return fopen( wxConvFile.cWX2MB(path), mode_buffer );
1238 }
1239
1240 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
1241 {
1242     char mode_buffer[10];
1243     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1244        mode_buffer[i] = (char) mode[i];
1245
1246     return freopen( wxConvFile.cWX2MB(path), mode_buffer, stream );
1247 }
1248
1249 WXDLLEXPORT int wxRemove(const wxChar *path)
1250 {
1251     return remove( wxConvFile.cWX2MB(path) );
1252 }
1253
1254 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
1255 {
1256     return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
1257 }
1258 #endif
1259
1260 #ifndef wxAtof
1261 double   WXDLLEXPORT wxAtof(const wxChar *psz)
1262 {
1263   return atof(wxConvLocal.cWX2MB(psz));
1264 }
1265 #endif
1266
1267 #ifdef wxNEED_WX_STDLIB_H
1268 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
1269 {
1270   return atoi(wxConvLocal.cWX2MB(psz));
1271 }
1272
1273 long     WXDLLEXPORT wxAtol(const wxChar *psz)
1274 {
1275   return atol(wxConvLocal.cWX2MB(psz));
1276 }
1277
1278 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
1279 {
1280   static wxHashTable env;
1281
1282   // check if we already have stored the converted env var
1283   wxObject *data = env.Get(name);
1284   if (!data)
1285   {
1286     // nope, retrieve it,
1287 #if wxUSE_UNICODE
1288     wxCharBuffer buffer = wxConvLocal.cWX2MB(name);
1289     // printf( "buffer %s\n", (const char*) buffer );
1290     const char *val = getenv( (const char *)buffer );
1291 #else
1292     const char *val = getenv( name );
1293 #endif
1294
1295     if (!val) return (wxChar *)NULL;
1296     // printf( "home %s\n", val );
1297
1298     // convert it,
1299 #ifdef wxUSE_UNICODE
1300     data = (wxObject *)new wxString(val, wxConvLocal);
1301 #else
1302     data = (wxObject *)new wxString(val);
1303 #endif
1304
1305     // and store it
1306     env.Put(name, data);
1307   }
1308   // return converted env var
1309   return (wxChar *)((wxString *)data)->c_str();
1310 }
1311
1312 int WXDLLEXPORT wxSystem(const wxChar *psz)
1313 {
1314     return system(wxConvLocal.cWX2MB(psz));
1315 }
1316
1317 #endif // wxNEED_WX_STDLIB_H
1318
1319 #ifdef wxNEED_WX_TIME_H
1320 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
1321 {
1322     if (!max) return 0;
1323
1324     char *buf = (char *)malloc(max);
1325     size_t ret = strftime(buf, max, wxConvLocal.cWX2MB(fmt), tm);
1326     if (ret)
1327     {
1328         wxStrcpy(s, wxConvLocal.cMB2WX(buf));
1329         free(buf);
1330         return wxStrlen(s);
1331     }
1332     else
1333     {
1334         free(buf);
1335         *s = 0;
1336         return 0;
1337   }
1338 }
1339 #endif // wxNEED_WX_TIME_H
1340
1341 #endif // wxUSE_WCHAR_T
1342
1343 // ----------------------------------------------------------------------------
1344 // functions which we may need even if !wxUSE_WCHAR_T
1345 // ----------------------------------------------------------------------------
1346
1347 #ifndef wxStrtok
1348
1349 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
1350 {
1351     if (!psz)
1352     {
1353         psz = *save_ptr;
1354         if ( !psz )
1355             return NULL;
1356     }
1357
1358     psz += wxStrspn(psz, delim);
1359     if (!*psz)
1360     {
1361         *save_ptr = (wxChar *)NULL;
1362         return (wxChar *)NULL;
1363     }
1364
1365     wxChar *ret = psz;
1366     psz = wxStrpbrk(psz, delim);
1367     if (!psz)
1368     {
1369         *save_ptr = (wxChar*)NULL;
1370     }
1371     else
1372     {
1373         *psz = wxT('\0');
1374         *save_ptr = psz + 1;
1375     }
1376
1377     return ret;
1378 }
1379
1380 #endif // wxStrtok
1381
1382 // ----------------------------------------------------------------------------
1383 // missing C RTL functions
1384 // ----------------------------------------------------------------------------
1385
1386 #if defined( __MWERKS__ ) && !defined(__MACH__)
1387 #if __MSL__ < 0x00008000
1388 char *strdup(const char *s)
1389 {
1390         return strcpy( (char*) malloc( strlen( s ) + 1 ) , s ) ;
1391 }
1392 #endif
1393 int isascii( int c )
1394 {
1395         return ( c >= 0 && c < 128 ) ;
1396 }
1397 #endif // __MWERKS__
1398