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 // ----------------------------------------------------------------------------
 125 // implement [v]snprintf() if the system doesn't provide a safe one
 126 // ----------------------------------------------------------------------------
 127
 128 #if !defined(wxVsnprintf_)
 129 int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
 130                              const wxChar *format, va_list argptr)
 131 {
 132     // buffer to avoid dynamic memory allocation each time for small strings
 133     char szScratch[1024];
 134
 135     // number of characters in the buffer so far, must be less than lenMax
 136     size_t lenCur = 0;
 137
 138     for (size_t n = 0; format[n]; n++)
 139     {
 140         if (format[n] == wxT('%')) {
 141             static char s_szFlags[256] = "%";
 142             size_t flagofs = 1;
 143             bool adj_left = FALSE,
 144                  in_prec = FALSE,
 145                  prec_dot = FALSE,
 146                  done = FALSE;
 147             int ilen = 0;
 148             size_t min_width = 0,
 149                    max_width = wxSTRING_MAXLEN;
 150             do {
 151
 152 #define CHECK_PREC \
 153                 if (in_prec && !prec_dot) \
 154                 { \
 155                     s_szFlags[flagofs++] = '.'; \
 156                     prec_dot = TRUE; \
 157                 }
 158
 159 #define APPEND_CH(ch) \
 160                 if ( lenCur == lenMax ) \
 161                     return -1; \
 162                 \
 163                 buf[lenCur++] = ch
 164
 165 #define APPEND_STR(s) \
 166                 { \
 167                     for ( const wxChar *p = s; *p; p++ ) \
 168                     { \
 169                         APPEND_CH(*p); \
 170                     } \
 171                 }
 172
 173                 switch (format[++n]) {
 174                     case wxT('\0'):
 175                         APPEND_CH(_T('\0'));
 176
 177                         done = TRUE;
 178                         break;
 179
 180                     case wxT('%'):
 181                         APPEND_CH(_T('%'));
 182                         done = TRUE;
 183                         break;
 184
 185                     case wxT('#'):
 186                     case wxT('0'):
 187                     case wxT(' '):
 188                     case wxT('+'):
 189                     case wxT('\''):
 190                         CHECK_PREC
 191                         s_szFlags[flagofs++] = format[n];
 192                         break;
 193
 194                     case wxT('-'):
 195                         CHECK_PREC
 196                         adj_left = TRUE;
 197                         s_szFlags[flagofs++] = format[n];
 198                         break;
 199
 200                     case wxT('.'):
 201                         CHECK_PREC
 202                             in_prec = TRUE;
 203                         prec_dot = FALSE;
 204                         max_width = 0;
 205                         // dot will be auto-added to s_szFlags if non-negative number follows
 206                         break;
 207
 208                     case wxT('h'):
 209                         ilen = -1;
 210                         CHECK_PREC
 211                         s_szFlags[flagofs++] = format[n];
 212                         break;
 213
 214                     case wxT('l'):
 215                         ilen = 1;
 216                         CHECK_PREC
 217                         s_szFlags[flagofs++] = format[n];
 218                         break;
 219
 220                     case wxT('q'):
 221                     case wxT('L'):
 222                         ilen = 2;
 223                         CHECK_PREC
 224                         s_szFlags[flagofs++] = format[n];
 225                         break;
 226
 227                     case wxT('Z'):
 228                         ilen = 3;
 229                         CHECK_PREC
 230                         s_szFlags[flagofs++] = format[n];
 231                         break;
 232
 233                     case wxT('*'):
 234                         {
 235                             int len = va_arg(argptr, int);
 236                             if (in_prec) {
 237                                 if (len<0) break;
 238                                 CHECK_PREC
 239                                     max_width = len;
 240                             } else {
 241                                 if (len<0) {
 242                                     adj_left = !adj_left;
 243                                     s_szFlags[flagofs++] = '-';
 244                                     len = -len;
 245                                 }
 246                                 min_width = len;
 247                             }
 248                             flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
 249                         }
 250                         break;
 251
 252                     case wxT('1'): case wxT('2'): case wxT('3'):
 253                     case wxT('4'): case wxT('5'): case wxT('6'):
 254                     case wxT('7'): case wxT('8'): case wxT('9'):
 255                         {
 256                             int len = 0;
 257                             CHECK_PREC
 258                                 while ((format[n]>=wxT('0')) && (format[n]<=wxT('9'))) {
 259                                     s_szFlags[flagofs++] = format[n];
 260                                     len = len*10 + (format[n] - wxT('0'));
 261                                     n++;
 262                                 }
 263                             if (in_prec) max_width = len;
 264                             else min_width = len;
 265                             n--; // the main loop pre-increments n again
 266                         }
 267                         break;
 268
 269                     case wxT('d'):
 270                     case wxT('i'):
 271                     case wxT('o'):
 272                     case wxT('u'):
 273                     case wxT('x'):
 274                     case wxT('X'):
 275                         CHECK_PREC
 276                         s_szFlags[flagofs++] = format[n];
 277                         s_szFlags[flagofs] = '\0';
 278                         if (ilen == 0 ) {
 279                             int val = va_arg(argptr, int);
 280                             ::sprintf(szScratch, s_szFlags, val);
 281                         }
 282                         else if (ilen == -1) {
 283                             // NB: 'short int' value passed through '...'
 284                             //      is promoted to 'int'
 285                             short int val = (short int) va_arg(argptr, int);
 286                             ::sprintf(szScratch, s_szFlags, val);
 287                         }
 288                         else if (ilen == 1) {
 289                             long int val = va_arg(argptr, long int);
 290                             ::sprintf(szScratch, s_szFlags, val);
 291                         }
 292                         else if (ilen == 2) {
 293 #if SIZEOF_LONG_LONG
 294                             long long int val = va_arg(argptr, long long int);
 295                             ::sprintf(szScratch, s_szFlags, val);
 296 #else
 297                             long int val = va_arg(argptr, long int);
 298                             ::sprintf(szScratch, s_szFlags, val);
 299 #endif
 300                         }
 301                         else if (ilen == 3) {
 302                             size_t val = va_arg(argptr, size_t);
 303                             ::sprintf(szScratch, s_szFlags, val);
 304                         }
 305                         {
 306                             wxMB2WXbuf tmp = wxConvLibc.cMB2WX(szScratch);
 307                             APPEND_STR(tmp);
 308                         }
 309
 310                         done = TRUE;
 311                         break;
 312
 313                     case wxT('e'):
 314                     case wxT('E'):
 315                     case wxT('f'):
 316                     case wxT('g'):
 317                     case wxT('G'):
 318                         CHECK_PREC
 319                         s_szFlags[flagofs++] = format[n];
 320                         s_szFlags[flagofs] = '\0';
 321                         if (ilen == 2) {
 322                             long double val = va_arg(argptr, long double);
 323                             ::sprintf(szScratch, s_szFlags, val);
 324                         } else {
 325                             double val = va_arg(argptr, double);
 326                             ::sprintf(szScratch, s_szFlags, val);
 327                         }
 328                         {
 329                             wxMB2WXbuf tmp = wxConvLibc.cMB2WX(szScratch);
 330                             APPEND_STR(tmp);
 331                         }
 332
 333                         done = TRUE;
 334                         break;
 335
 336                     case wxT('p'):
 337                         {
 338                             void *val = va_arg(argptr, void *);
 339                             CHECK_PREC
 340                                 s_szFlags[flagofs++] = format[n];
 341                             s_szFlags[flagofs] = '\0';
 342                             ::sprintf(szScratch, s_szFlags, val);
 343
 344                             wxMB2WXbuf tmp = wxConvLibc.cMB2WX(szScratch);
 345                             APPEND_STR(tmp);
 346
 347                             done = TRUE;
 348                         }
 349                         break;
 350
 351                     case wxT('c'):
 352                         {
 353                             wxChar val = va_arg(argptr, int);
 354                             // we don't need to honor padding here, do we?
 355                             APPEND_CH(val);
 356
 357                             done = TRUE;
 358                         }
 359                         break;
 360
 361                     case wxT('s'):
 362                         if (ilen == -1) {
 363                             // wx extension: we'll let %hs mean non-Unicode strings
 364                             char *val = va_arg(argptr, char *);
 365 #if wxUSE_UNICODE
 366                             // ASCII->Unicode constructor handles max_width right
 367                             wxString s(val, wxConvLibc, max_width);
 368 #else
 369                             size_t len = wxSTRING_MAXLEN;
 370                             if (val) {
 371                                 for (len = 0; val[len] && (len<max_width); len++);
 372                             } else val = wxT("(null)");
 373                             wxString s(val, len);
 374 #endif
 375                             if (s.Len() < min_width)
 376                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 377
 378                             APPEND_STR(s);
 379                         } else {
 380                             wxChar *val = va_arg(argptr, wxChar *);
 381                             size_t len = wxSTRING_MAXLEN;
 382                             if (val) {
 383                                 for (len = 0; val[len] && (len<max_width); len++);
 384                             } else val = wxT("(null)");
 385                             wxString s(val, len);
 386                             if (s.Len() < min_width)
 387                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 388
 389                             APPEND_STR(s);
 390                         }
 391                         done = TRUE;
 392                         break;
 393
 394                     case wxT('n'):
 395                         if (ilen == 0) {
 396                             int *val = va_arg(argptr, int *);
 397                             *val = lenCur;
 398                         }
 399                         else if (ilen == -1) {
 400                             short int *val = va_arg(argptr, short int *);
 401                             *val = lenCur;
 402                         }
 403                         else if (ilen >= 1) {
 404                             long int *val = va_arg(argptr, long int *);
 405                             *val = lenCur;
 406                         }
 407                         done = TRUE;
 408                         break;
 409
 410                     default:
 411                         if (wxIsalpha(format[n]))
 412                             // probably some flag not taken care of here yet
 413                             s_szFlags[flagofs++] = format[n];
 414                         else {
 415                             // bad format
 416                             APPEND_CH(_T('%')); // just to pass the glibc tst-printf.c
 417                             n--;
 418                             done = TRUE;
 419                         }
 420                         break;
 421                 }
 422             } while (!done);
 423         }
 424         else
 425         {
 426             APPEND_CH(format[n]);
 427         }
 428     }
 429
 430     return lenCur;
 431 }
 432
 433 #undef APPEND_CH
 434 #undef APPEND_STR
 435 #undef CHECK_PREC
 436
 437 #endif // !wxVsnprintfA
 438
 439 #if !defined(wxSnprintf_)
 440 int WXDLLEXPORT wxSnprintf_(wxChar *buf, size_t len, const wxChar *format, ...)
 441 {
 442     va_list argptr;
 443     va_start(argptr, format);
 444
 445     int iLen = wxVsnprintf_(buf, len, format, argptr);
 446
 447     va_end(argptr);
 448
 449     return iLen;
 450 }
 451 #endif // wxSnprintf_
 452
 453 // ----------------------------------------------------------------------------
 454 // implement the standard IO functions for wide char if libc doesn't have them
 455 // ----------------------------------------------------------------------------
 456
 457 #ifdef wxNEED_FPUTWC
 458
 459 int wxFputs(const wchar_t *ws, FILE *stream)
 460 {
 461     // counting the number of wide characters written isn't worth the trouble,
 462     // simply distinguish between ok and error
 463     return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
 464 }
 465
 466 int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
 467 {
 468     wchar_t ws[2] = { wc, L'\0' };
 469
 470     return wxFputs(ws, stream);
 471 }
 472
 473 #endif // wxNEED_FPUTWC
 474
 475 // NB: we only implement va_list functions here, the ones taking ... are
 476 //     defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
 477 //     the definitions there to avoid duplicating them here
 478 #ifdef wxNEED_WPRINTF
 479
 480 // TODO: implement the scanf() functions
 481 int vwscanf(const wchar_t *format, va_list argptr)
 482 {
 483     wxFAIL_MSG( _T("TODO") );
 484
 485     return -1;
 486 }
 487
 488 int vswscanf(const wchar_t *ws, const wchar_t *format, va_list argptr)
 489 {
 490     wxFAIL_MSG( _T("TODO") );
 491
 492     return -1;
 493 }
 494
 495 int vfwscanf(FILE *stream, const wchar_t *format, va_list argptr)
 496 {
 497     wxFAIL_MSG( _T("TODO") );
 498
 499     return -1;
 500 }
 501
 502 #define vswprintf wxVsnprintf_
 503
 504 int vfwprintf(FILE *stream, const wchar_t *format, va_list argptr)
 505 {
 506     wxString s;
 507     int rc = s.PrintfV(format, argptr);
 508
 509     if ( rc != -1 )
 510     {
 511         // we can't do much better without Unicode support in libc...
 512         if ( fprintf(stream, s.mb_str()) == -1 )
 513             return -1;
 514     }
 515
 516     return rc;
 517 }
 518
 519 int vwprintf(const wchar_t *format, va_list argptr)
 520 {
 521     return wxVfprintf(stdout, format, argptr);
 522 }
 523
 524 #endif // wxNEED_WPRINTF
 525
 526 #ifdef wxNEED_PRINTF_CONVERSION
 527
 528 // ----------------------------------------------------------------------------
 529 // wxFormatConverter: class doing the "%s" -> "%ls" conversion
 530 // ----------------------------------------------------------------------------
 531
 532 /*
 533    Here are the gory details. We want to follow the Windows/MS conventions,
 534    that is to have
 535
 536    In ANSI mode:
 537
 538    format specifier         results in
 539    -----------------------------------
 540    %c, %hc, %hC             char
 541    %lc, %C, %lC             wchar_t
 542
 543    In Unicode mode:
 544
 545    format specifier         results in
 546    -----------------------------------
 547    %hc, %C, %hC             char
 548    %c, %lc, %lC             wchar_t
 549
 550
 551    while on POSIX systems we have %C identical to %lc and %c always means char
 552    (in any mode) while %lc always means wchar_t,
 553
 554    So to use native functions in order to get our semantics we must do the
 555    following translations in Unicode mode (nothing to do in ANSI mode):
 556
 557    wxWindows specifier      POSIX specifier
 558    ----------------------------------------
 559
 560    %hc, %C, %hC             %c
 561    %c                       %lc
 562
 563
 564    And, of course, the same should be done for %s as well.
 565 */
 566
 567 class wxFormatConverter
 568 {
 569 public:
 570     wxFormatConverter(const wxChar *format);
 571
 572     // notice that we only translated the string if m_fmtOrig == NULL (as set
 573     // by CopyAllBefore()), otherwise we should simply use the original format
 574     operator const wxChar *() const
 575         { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
 576
 577 private:
 578     // copy another character to the translated format: this function does the
 579     // copy if we are translating but doesn't do anything at all if we don't,
 580     // so we don't create the translated format string at all unless we really
 581     // need to (i.e. InsertFmtChar() is called)
 582     wxChar CopyFmtChar(wxChar ch)
 583     {
 584         if ( !m_fmtOrig )
 585         {
 586             // we're translating, do copy
 587             m_fmt += ch;
 588         }
 589         else
 590         {
 591             // simply increase the count which should be copied by
 592             // CopyAllBefore() later if needed
 593             m_nCopied++;
 594         }
 595
 596         return ch;
 597     }
 598
 599     // insert an extra character
 600     void InsertFmtChar(wxChar ch)
 601     {
 602         if ( m_fmtOrig )
 603         {
 604             // so far we haven't translated anything yet
 605             CopyAllBefore();
 606         }
 607
 608         m_fmt += ch;
 609     }
 610
 611     void CopyAllBefore()
 612     {
 613         wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
 614
 615         m_fmt = wxString(m_fmtOrig, m_nCopied);
 616
 617         // we won't need it any longer
 618         m_fmtOrig = NULL;
 619     }
 620
 621     static bool IsFlagChar(wxChar ch)
 622     {
 623         return ch == _T('-') || ch == _T('+') ||
 624                ch == _T('0') || ch == _T(' ') || ch == _T('#');
 625     }
 626
 627     void SkipDigits(const wxChar **ppc)
 628     {
 629         while ( **ppc >= _T('0') && **ppc <= _T('9') )
 630             CopyFmtChar(*(*ppc)++);
 631     }
 632
 633     // the translated format
 634     wxString m_fmt;
 635
 636     // the original format
 637     const wxChar *m_fmtOrig;
 638
 639     // the number of characters already copied
 640     size_t m_nCopied;
 641 };
 642
 643 wxFormatConverter::wxFormatConverter(const wxChar *format)
 644 {
 645     m_fmtOrig = format;
 646     m_nCopied = 0;
 647
 648     while ( *format )
 649     {
 650         if ( CopyFmtChar(*format++) == _T('%') )
 651         {
 652             // skip any flags
 653             while ( IsFlagChar(*format) )
 654                 CopyFmtChar(*format++);
 655
 656             // and possible width
 657             if ( *format == _T('*') )
 658                 CopyFmtChar(*format++);
 659             else
 660                 SkipDigits(&format);
 661
 662             // precision?
 663             if ( *format == _T('.') )
 664             {
 665                 SkipDigits(&format);
 666             }
 667
 668             // next we can have a size modifier
 669             enum
 670             {
 671                 Default,
 672                 Short,
 673                 Long
 674             } size;
 675
 676             switch ( *format )
 677             {
 678                 case _T('h'):
 679                     size = Short;
 680                     format++;
 681                     break;
 682
 683                 case _T('l'):
 684                     // "ll" has a different meaning!
 685                     if ( format[1] != _T('l') )
 686                     {
 687                         size = Long;
 688                         format++;
 689                         break;
 690                     }
 691                     //else: fall through
 692
 693                 default:
 694                     size = Default;
 695             }
 696
 697             // and finally we should have the type
 698             switch ( *format )
 699             {
 700                 case _T('C'):
 701                 case _T('S'):
 702                     // %C and %hC -> %c and %lC -> %lc
 703                     if ( size == Long )
 704                         CopyFmtChar(_T('l'));
 705
 706                     InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
 707                     break;
 708
 709                 case _T('c'):
 710                 case _T('s'):
 711                     // %c -> %lc but %hc stays %hc and %lc is still %lc
 712                     switch ( size )
 713                     {
 714                         case Default:
 715                             InsertFmtChar(_T('l'));
 716                             break;
 717
 718                         case Short:
 719                             CopyFmtChar(_T('h'));
 720                             break;
 721
 722                         case Long:
 723                             ;
 724                     }
 725                     // fall through
 726
 727                 default:
 728                     // nothing special to do
 729                     CopyFmtChar(*format++);
 730             }
 731         }
 732     }
 733 }
 734
 735 #else // !wxNEED_PRINTF_CONVERSION
 736     // no conversion necessary
 737     #define wxFormatConverter(x) (x)
 738 #endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
 739
 740 // ----------------------------------------------------------------------------
 741 // wxPrintf(), wxScanf() and relatives
 742 // ----------------------------------------------------------------------------
 743
 744 #if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
 745
 746 int wxScanf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_2
 747 {
 748     va_list argptr;
 749     va_start(argptr, format);
 750
 751     int ret = vwscanf(wxFormatConverter(format), argptr );
 752
 753     va_end(argptr);
 754
 755     return ret;
 756 }
 757
 758 int wxSscanf( const wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 759 {
 760     va_list argptr;
 761     va_start(argptr, format);
 762
 763     int ret = vswscanf( str, wxFormatConverter(format), argptr );
 764
 765     va_end(argptr);
 766
 767     return ret;
 768 }
 769
 770 int wxFscanf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 771 {
 772     va_list argptr;
 773     va_start(argptr, format);
 774
 775     int ret = vfwscanf(stream, wxFormatConverter(format), argptr);
 776
 777     va_end(argptr);
 778
 779     return ret;
 780 }
 781
 782 int wxPrintf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_2
 783 {
 784     va_list argptr;
 785     va_start(argptr, format);
 786
 787     int ret = vwprintf( wxFormatConverter(format), argptr );
 788
 789     va_end(argptr);
 790
 791     return ret;
 792 }
 793
 794 #ifndef wxSnprintf
 795 int wxSnprintf( wxChar *str, size_t size, const wxChar *format, ... ) ATTRIBUTE_PRINTF_4
 796 {
 797     va_list argptr;
 798     va_start(argptr, format);
 799
 800     int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
 801
 802     va_end(argptr);
 803
 804     return ret;
 805 }
 806 #endif // wxSnprintf
 807
 808 int wxSprintf( wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 809 {
 810     va_list argptr;
 811     va_start(argptr, format);
 812
 813     // callers of wxSprintf() deserve what they get
 814     int ret = vswprintf( str, UINT_MAX, wxFormatConverter(format), argptr );
 815
 816     va_end(argptr);
 817
 818     return ret;
 819 }
 820
 821 int wxFprintf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 822 {
 823     va_list argptr;
 824     va_start( argptr, format );
 825
 826     int ret = vfwprintf( stream, wxFormatConverter(format), argptr );
 827
 828     va_end(argptr);
 829
 830     return ret;
 831 }
 832
 833 int wxVsscanf( const wxChar *str, const wxChar *format, va_list argptr )
 834 {
 835     return vswscanf( str, wxFormatConverter(format), argptr );
 836 }
 837
 838 int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr )
 839 {
 840     return vfwprintf( stream, wxFormatConverter(format), argptr );
 841 }
 842
 843 int wxVprintf( const wxChar *format, va_list argptr )
 844 {
 845     return vwprintf( wxFormatConverter(format), argptr );
 846 }
 847
 848 #ifndef wxVsnprintf
 849 int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list argptr )
 850 {
 851     return vswprintf( str, size, wxFormatConverter(format), argptr );
 852 }
 853 #endif // wxVsnprintf
 854
 855 int wxVsprintf( wxChar *str, const wxChar *format, va_list argptr )
 856 {
 857     // same as for wxSprintf()
 858     return vswprintf(str, UINT_MAX, wxFormatConverter(format), argptr);
 859 }
 860
 861 #endif // wxNEED_PRINTF_CONVERSION
 862
 863 // ----------------------------------------------------------------------------
 864 // ctype.h stuff (currently unused)
 865 // ----------------------------------------------------------------------------
 866
 867 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 868 inline WORD wxMSW_ctype(wxChar ch)
 869 {
 870   WORD ret;
 871   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 872   return ret;
 873 }
 874
 875 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 876 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 877 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 878 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 879 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 880 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 881 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 882 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 883 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 884 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 885 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 886 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 887 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 888 #endif
 889
 890 #ifndef wxStrdup
 891 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 892 {
 893   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 894   wxChar *ret = (wxChar *) malloc(size);
 895   memcpy(ret, psz, size);
 896   return ret;
 897 }
 898 #endif
 899
 900 #ifndef wxStricmp
 901 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 902 {
 903   register wxChar c1, c2;
 904   do {
 905     c1 = wxTolower(*psz1++);
 906     c2 = wxTolower(*psz2++);
 907   } while ( c1 && (c1 == c2) );
 908   return c1 - c2;
 909 }
 910 #endif
 911
 912 #ifndef wxStricmp
 913 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
 914 {
 915   register wxChar c1, c2;
 916   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
 917   if (n) {
 918     if (c1 < c2) return -1;
 919     if (c1 > c2) return 1;
 920   }
 921   return 0;
 922 }
 923 #endif
 924
 925 #ifndef wxStrtok
 926 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 927 {
 928     if (!psz)
 929     {
 930         psz = *save_ptr;
 931         if ( !psz )
 932             return NULL;
 933     }
 934
 935     psz += wxStrspn(psz, delim);
 936     if (!*psz)
 937     {
 938         *save_ptr = (wxChar *)NULL;
 939         return (wxChar *)NULL;
 940     }
 941
 942     wxChar *ret = psz;
 943     psz = wxStrpbrk(psz, delim);
 944     if (!psz)
 945     {
 946         *save_ptr = (wxChar*)NULL;
 947     }
 948     else
 949     {
 950         *psz = wxT('\0');
 951         *save_ptr = psz + 1;
 952     }
 953
 954     return ret;
 955 }
 956 #endif // wxStrtok
 957
 958 #ifndef wxSetlocale
 959 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
 960 {
 961     char *localeOld = setlocale(category, wxConvLocal.cWX2MB(locale));
 962
 963     return wxWCharBuffer(wxConvLocal.cMB2WC(localeOld));
 964 }
 965 #endif
 966
 967 // ----------------------------------------------------------------------------
 968 // string.h functions
 969 // ----------------------------------------------------------------------------
 970
 971 #ifdef wxNEED_WX_STRING_H
 972 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 973 {
 974   wxChar *ret = dest;
 975   while (*dest) dest++;
 976   while ((*dest++ = *src++));
 977   return ret;
 978 }
 979
 980 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
 981 {
 982     // be careful here as the terminating NUL makes part of the string
 983     while ( *s != c )
 984     {
 985         if ( !*s++ )
 986             return NULL;
 987     }
 988
 989     return s;
 990 }
 991
 992 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 993 {
 994   while ((*s1 == *s2) && *s1) s1++, s2++;
 995   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 996   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
 997   return 0;
 998 }
 999
1000 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
1001 {
1002   wxChar *ret = dest;
1003   while ((*dest++ = *src++));
1004   return ret;
1005 }
1006
1007 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
1008 {
1009   wxChar *ret = dest;
1010   while (*dest) dest++;
1011   while (n && (*dest++ = *src++)) n--;
1012   return ret;
1013 }
1014
1015 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
1016 {
1017   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
1018   if (n) {
1019     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1020     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1021   }
1022   return 0;
1023 }
1024
1025 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
1026 {
1027   wxChar *ret = dest;
1028   while (n && (*dest++ = *src++)) n--;
1029   while (n) *dest++=0, n--; // the docs specify padding with zeroes
1030   return ret;
1031 }
1032
1033 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
1034 {
1035   while (*s && !wxStrchr(accept, *s))
1036       s++;
1037
1038   return *s ? s : NULL;
1039 }
1040
1041 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
1042 {
1043     const wxChar *ret = NULL;
1044     do
1045     {
1046         if ( *s == c )
1047             ret = s;
1048         s++;
1049     }
1050     while ( *s );
1051
1052     return ret;
1053 }
1054
1055 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
1056 {
1057   size_t len = 0;
1058   while (wxStrchr(accept, *s++)) len++;
1059   return len;
1060 }
1061
1062 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
1063 {
1064     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
1065
1066     // VZ: this is not exactly the most efficient string search algorithm...
1067
1068     const size_t len = wxStrlen(needle);
1069
1070     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
1071     {
1072         if ( !wxStrncmp(fnd, needle, len) )
1073             return fnd;
1074
1075         haystack = fnd + 1;
1076     }
1077
1078     return NULL;
1079 }
1080
1081 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
1082 {
1083   const wxChar *start = nptr;
1084
1085   // FIXME: only correct for C locale
1086   while (wxIsspace(*nptr)) nptr++;
1087   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1088   while (wxIsdigit(*nptr)) nptr++;
1089   if (*nptr == wxT('.')) {
1090     nptr++;
1091     while (wxIsdigit(*nptr)) nptr++;
1092   }
1093   if (*nptr == wxT('E') || *nptr == wxT('e')) {
1094     nptr++;
1095     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1096     while (wxIsdigit(*nptr)) nptr++;
1097   }
1098
1099   wxString data(nptr, nptr-start);
1100   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1101   char *rdat = wxMBSTRINGCAST dat;
1102   double ret = strtod(dat, &rdat);
1103
1104   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1105
1106   return ret;
1107 }
1108
1109 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
1110 {
1111   const wxChar *start = nptr;
1112
1113   // FIXME: only correct for C locale
1114   while (wxIsspace(*nptr)) nptr++;
1115   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1116   if (((base == 0) || (base == 16)) &&
1117       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
1118     nptr += 2;
1119     base = 16;
1120   }
1121   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
1122   else if (base == 0) base = 10;
1123
1124   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
1125          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
1126
1127   wxString data(nptr, nptr-start);
1128   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1129   char *rdat = wxMBSTRINGCAST dat;
1130   long int ret = strtol(dat, &rdat, base);
1131
1132   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1133
1134   return ret;
1135 }
1136 #endif // wxNEED_WX_STRING_H
1137
1138 #ifdef wxNEED_WX_STDIO_H
1139 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
1140 {
1141     char mode_buffer[10];
1142     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1143        mode_buffer[i] = (char) mode[i];
1144
1145     return fopen( wxConvFile.cWX2MB(path), mode_buffer );
1146 }
1147
1148 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
1149 {
1150     char mode_buffer[10];
1151     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1152        mode_buffer[i] = (char) mode[i];
1153
1154     return freopen( wxConvFile.cWX2MB(path), mode_buffer, stream );
1155 }
1156
1157 WXDLLEXPORT int wxRemove(const wxChar *path)
1158 {
1159     return remove( wxConvFile.cWX2MB(path) );
1160 }
1161
1162 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
1163 {
1164     return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
1165 }
1166 #endif
1167
1168 #ifndef wxAtof
1169 double   WXDLLEXPORT wxAtof(const wxChar *psz)
1170 {
1171   return atof(wxConvLocal.cWX2MB(psz));
1172 }
1173 #endif
1174
1175 #ifdef wxNEED_WX_STDLIB_H
1176 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
1177 {
1178   return atoi(wxConvLocal.cWX2MB(psz));
1179 }
1180
1181 long     WXDLLEXPORT wxAtol(const wxChar *psz)
1182 {
1183   return atol(wxConvLocal.cWX2MB(psz));
1184 }
1185
1186 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
1187 {
1188   static wxHashTable env;
1189
1190   // check if we already have stored the converted env var
1191   wxObject *data = env.Get(name);
1192   if (!data)
1193   {
1194     // nope, retrieve it,
1195 #if wxUSE_UNICODE
1196     wxCharBuffer buffer = wxConvLocal.cWX2MB(name);
1197     // printf( "buffer %s\n", (const char*) buffer );
1198     const char *val = getenv( (const char *)buffer );
1199 #else
1200     const char *val = getenv( name );
1201 #endif
1202
1203     if (!val) return (wxChar *)NULL;
1204     // printf( "home %s\n", val );
1205
1206     // convert it,
1207 #ifdef wxUSE_UNICODE
1208     data = (wxObject *)new wxString(val, wxConvLocal);
1209 #else
1210     data = (wxObject *)new wxString(val);
1211 #endif
1212
1213     // and store it
1214     env.Put(name, data);
1215   }
1216   // return converted env var
1217   return (wxChar *)((wxString *)data)->c_str();
1218 }
1219
1220 int WXDLLEXPORT wxSystem(const wxChar *psz)
1221 {
1222     return system(wxConvLocal.cWX2MB(psz));
1223 }
1224
1225 #endif
1226
1227 #ifdef wxNEED_WX_TIME_H
1228 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
1229 {
1230     if (!max) return 0;
1231
1232     char *buf = (char *)malloc(max);
1233     size_t ret = strftime(buf, max, wxConvLocal.cWX2MB(fmt), tm);
1234     if (ret)
1235     {
1236         wxStrcpy(s, wxConvLocal.cMB2WX(buf));
1237         free(buf);
1238         return wxStrlen(s);
1239     }
1240     else
1241     {
1242         free(buf);
1243         *s = 0;
1244         return 0;
1245   }
1246 }
1247 #endif