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