src/common/wxchar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wxchar.cpp
   3 // Purpose:     wxChar implementation
   4 // Author:      Ove Kåven
   5 // Modified by: Ron Lee
   6 // Created:     09/04/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows copyright
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 #if defined(__DMC__)
 544     /* Digital Mars adds count to _stprintf (C99) so convert */
 545     #if wxUSE_UNICODE
 546         int wxSprintf (wchar_t * __RESTRICT s, const wchar_t * __RESTRICT format, ... )
 547         {
 548             va_list arglist;
 549
 550             va_start( arglist, format );
 551             int iLen = swprintf ( s, -1, format, arglist );
 552             va_end( arglist );
 553             return iLen ;
 554         }
 555
 556     #endif // wxUSE_UNICODE
 557
 558 #endif //__DMC__
 559
 560 // ----------------------------------------------------------------------------
 561 // implement the standard IO functions for wide char if libc doesn't have them
 562 // ----------------------------------------------------------------------------
 563
 564 #ifdef wxNEED_FPUTWC
 565
 566 int wxFputs(const wchar_t *ws, FILE *stream)
 567 {
 568     // counting the number of wide characters written isn't worth the trouble,
 569     // simply distinguish between ok and error
 570     return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
 571 }
 572
 573 int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
 574 {
 575     wchar_t ws[2] = { wc, L'\0' };
 576
 577     return wxFputs(ws, stream);
 578 }
 579
 580 #endif // wxNEED_FPUTWC
 581
 582 // NB: we only implement va_list functions here, the ones taking ... are
 583 //     defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
 584 //     the definitions there to avoid duplicating them here
 585 #ifdef wxNEED_WPRINTF
 586
 587 // TODO: implement the scanf() functions
 588 int vwscanf(const wxChar *format, va_list argptr)
 589 {
 590     wxFAIL_MSG( _T("TODO") );
 591
 592     return -1;
 593 }
 594
 595 int vswscanf(const wxChar *ws, const wxChar *format, va_list argptr)
 596 {
 597     wxFAIL_MSG( _T("TODO") );
 598
 599     return -1;
 600 }
 601
 602 int vfwscanf(FILE *stream, const wxChar *format, va_list argptr)
 603 {
 604     wxFAIL_MSG( _T("TODO") );
 605
 606     return -1;
 607 }
 608
 609 #define vswprintf wxVsnprintf_
 610
 611 int vfwprintf(FILE *stream, const wxChar *format, va_list argptr)
 612 {
 613     wxString s;
 614     int rc = s.PrintfV(format, argptr);
 615
 616     if ( rc != -1 )
 617     {
 618         // we can't do much better without Unicode support in libc...
 619         if ( fprintf(stream, "%s", (const char*)s.mb_str() ) == -1 )
 620             return -1;
 621     }
 622
 623     return rc;
 624 }
 625
 626 int vwprintf(const wxChar *format, va_list argptr)
 627 {
 628     return wxVfprintf(stdout, format, argptr);
 629 }
 630
 631 #endif // wxNEED_WPRINTF
 632
 633 #ifdef wxNEED_PRINTF_CONVERSION
 634
 635 // ----------------------------------------------------------------------------
 636 // wxFormatConverter: class doing the "%s" -> "%ls" conversion
 637 // ----------------------------------------------------------------------------
 638
 639 /*
 640    Here are the gory details. We want to follow the Windows/MS conventions,
 641    that is to have
 642
 643    In ANSI mode:
 644
 645    format specifier         results in
 646    -----------------------------------
 647    %c, %hc, %hC             char
 648    %lc, %C, %lC             wchar_t
 649
 650    In Unicode mode:
 651
 652    format specifier         results in
 653    -----------------------------------
 654    %hc, %C, %hC             char
 655    %c, %lc, %lC             wchar_t
 656
 657
 658    while on POSIX systems we have %C identical to %lc and %c always means char
 659    (in any mode) while %lc always means wchar_t,
 660
 661    So to use native functions in order to get our semantics we must do the
 662    following translations in Unicode mode (nothing to do in ANSI mode):
 663
 664    wxWindows specifier      POSIX specifier
 665    ----------------------------------------
 666
 667    %hc, %C, %hC             %c
 668    %c                       %lc
 669
 670
 671    And, of course, the same should be done for %s as well.
 672 */
 673
 674 class wxFormatConverter
 675 {
 676 public:
 677     wxFormatConverter(const wxChar *format);
 678
 679     // notice that we only translated the string if m_fmtOrig == NULL (as set
 680     // by CopyAllBefore()), otherwise we should simply use the original format
 681     operator const wxChar *() const
 682         { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
 683
 684 private:
 685     // copy another character to the translated format: this function does the
 686     // copy if we are translating but doesn't do anything at all if we don't,
 687     // so we don't create the translated format string at all unless we really
 688     // need to (i.e. InsertFmtChar() is called)
 689     wxChar CopyFmtChar(wxChar ch)
 690     {
 691         if ( !m_fmtOrig )
 692         {
 693             // we're translating, do copy
 694             m_fmt += ch;
 695         }
 696         else
 697         {
 698             // simply increase the count which should be copied by
 699             // CopyAllBefore() later if needed
 700             m_nCopied++;
 701         }
 702
 703         return ch;
 704     }
 705
 706     // insert an extra character
 707     void InsertFmtChar(wxChar ch)
 708     {
 709         if ( m_fmtOrig )
 710         {
 711             // so far we haven't translated anything yet
 712             CopyAllBefore();
 713         }
 714
 715         m_fmt += ch;
 716     }
 717
 718     void CopyAllBefore()
 719     {
 720         wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
 721
 722         m_fmt = wxString(m_fmtOrig, m_nCopied);
 723
 724         // we won't need it any longer
 725         m_fmtOrig = NULL;
 726     }
 727
 728     static bool IsFlagChar(wxChar ch)
 729     {
 730         return ch == _T('-') || ch == _T('+') ||
 731                ch == _T('0') || ch == _T(' ') || ch == _T('#');
 732     }
 733
 734     void SkipDigits(const wxChar **ppc)
 735     {
 736         while ( **ppc >= _T('0') && **ppc <= _T('9') )
 737             CopyFmtChar(*(*ppc)++);
 738     }
 739
 740     // the translated format
 741     wxString m_fmt;
 742
 743     // the original format
 744     const wxChar *m_fmtOrig;
 745
 746     // the number of characters already copied
 747     size_t m_nCopied;
 748 };
 749
 750 wxFormatConverter::wxFormatConverter(const wxChar *format)
 751 {
 752     m_fmtOrig = format;
 753     m_nCopied = 0;
 754
 755     while ( *format )
 756     {
 757         if ( CopyFmtChar(*format++) == _T('%') )
 758         {
 759             // skip any flags
 760             while ( IsFlagChar(*format) )
 761                 CopyFmtChar(*format++);
 762
 763             // and possible width
 764             if ( *format == _T('*') )
 765                 CopyFmtChar(*format++);
 766             else
 767                 SkipDigits(&format);
 768
 769             // precision?
 770             if ( *format == _T('.') )
 771             {
 772                 CopyFmtChar(*format++);
 773                 if ( *format == _T('*') )
 774                     CopyFmtChar(*format++);
 775                 else
 776                     SkipDigits(&format);
 777             }
 778
 779             // next we can have a size modifier
 780             enum
 781             {
 782                 Default,
 783                 Short,
 784                 Long
 785             } size;
 786
 787             switch ( *format )
 788             {
 789                 case _T('h'):
 790                     size = Short;
 791                     format++;
 792                     break;
 793
 794                 case _T('l'):
 795                     // "ll" has a different meaning!
 796                     if ( format[1] != _T('l') )
 797                     {
 798                         size = Long;
 799                         format++;
 800                         break;
 801                     }
 802                     //else: fall through
 803
 804                 default:
 805                     size = Default;
 806             }
 807
 808             // and finally we should have the type
 809             switch ( *format )
 810             {
 811                 case _T('C'):
 812                 case _T('S'):
 813                     // %C and %hC -> %c and %lC -> %lc
 814                     if ( size == Long )
 815                         CopyFmtChar(_T('l'));
 816
 817                     InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
 818                     break;
 819
 820                 case _T('c'):
 821                 case _T('s'):
 822                     // %c -> %lc but %hc stays %hc and %lc is still %lc
 823                     if ( size == Default)
 824                         InsertFmtChar(_T('l'));
 825                     // fall through
 826
 827                 default:
 828                     // nothing special to do
 829                     if ( size != Default )
 830                         CopyFmtChar(*(format - 1));
 831                     CopyFmtChar(*format++);
 832             }
 833         }
 834     }
 835 }
 836
 837 #else // !wxNEED_PRINTF_CONVERSION
 838     // no conversion necessary
 839     #define wxFormatConverter(x) (x)
 840 #endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
 841
 842 #ifdef __WXDEBUG__
 843 // For testing the format converter
 844 wxString wxConvertFormat(const wxChar *format)
 845 {
 846     return wxString(wxFormatConverter(format));
 847 }
 848 #endif
 849
 850 // ----------------------------------------------------------------------------
 851 // wxPrintf(), wxScanf() and relatives
 852 // ----------------------------------------------------------------------------
 853
 854 #if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
 855
 856 int wxScanf( const wxChar *format, ... )
 857 {
 858     va_list argptr;
 859     va_start(argptr, format);
 860
 861     int ret = vwscanf(wxFormatConverter(format), argptr );
 862
 863     va_end(argptr);
 864
 865     return ret;
 866 }
 867
 868 int wxSscanf( const wxChar *str, const wxChar *format, ... )
 869 {
 870     va_list argptr;
 871     va_start(argptr, format);
 872
 873     int ret = vswscanf( str, wxFormatConverter(format), argptr );
 874
 875     va_end(argptr);
 876
 877     return ret;
 878 }
 879
 880 int wxFscanf( FILE *stream, const wxChar *format, ... )
 881 {
 882     va_list argptr;
 883     va_start(argptr, format);
 884     int ret = vfwscanf(stream, wxFormatConverter(format), argptr);
 885
 886     va_end(argptr);
 887
 888     return ret;
 889 }
 890
 891 int wxPrintf( const wxChar *format, ... )
 892 {
 893     va_list argptr;
 894     va_start(argptr, format);
 895
 896     int ret = vwprintf( wxFormatConverter(format), argptr );
 897
 898     va_end(argptr);
 899
 900     return ret;
 901 }
 902
 903 #ifndef wxSnprintf
 904 int wxSnprintf( wxChar *str, size_t size, const wxChar *format, ... )
 905 {
 906     va_list argptr;
 907     va_start(argptr, format);
 908
 909     int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
 910
 911     va_end(argptr);
 912
 913     return ret;
 914 }
 915 #endif // wxSnprintf
 916
 917 int wxSprintf( wxChar *str, const wxChar *format, ... )
 918 {
 919     va_list argptr;
 920     va_start(argptr, format);
 921
 922     // callers of wxSprintf() deserve what they get
 923     //int ret = vswprintf( str, UINT_MAX, wxFormatConverter(format), argptr );
 924
 925     // ... true, but if we are going to implement it, they probably still
 926     // deserve something a little better than absolutely guaranteed silent
 927     // failure.  For some (very mysterious) reason, this call fails under glibc
 928     // 2.3.2 if str was allocated on the heap and maxsize is larger than this.
 929     // Even more mysterious is that it does still succeed if str was allocated
 930     // on the stack.  This should still be plenty large enough for people who
 931     // want to overflow a buffer.  The bug was first noticed in unicode builds
 932     // of tex2rtf, but I'm going to fix that to not use this unsafe function
 933     // instead of wasting time diagnosing this further right now.
 934     int ret = vswprintf( str, INT_MAX / 4, wxFormatConverter(format), argptr );
 935
 936     va_end(argptr);
 937
 938     return ret;
 939 }
 940
 941 int wxFprintf( FILE *stream, const wxChar *format, ... )
 942 {
 943     va_list argptr;
 944     va_start( argptr, format );
 945
 946     int ret = vfwprintf( stream, wxFormatConverter(format), argptr );
 947
 948     va_end(argptr);
 949
 950     return ret;
 951 }
 952
 953 int wxVsscanf( const wxChar *str, const wxChar *format, va_list argptr )
 954 {
 955     return vswscanf( str, wxFormatConverter(format), argptr );
 956 }
 957
 958 int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr )
 959 {
 960     return vfwprintf( stream, wxFormatConverter(format), argptr );
 961 }
 962
 963 int wxVprintf( const wxChar *format, va_list argptr )
 964 {
 965     return vwprintf( wxFormatConverter(format), argptr );
 966 }
 967
 968 #ifndef wxVsnprintf
 969 int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list argptr )
 970 {
 971     return vswprintf( str, size, wxFormatConverter(format), argptr );
 972 }
 973 #endif // wxVsnprintf
 974
 975 int wxVsprintf( wxChar *str, const wxChar *format, va_list argptr )
 976 {
 977     // same as for wxSprintf()
 978     return vswprintf(str, INT_MAX / 4, wxFormatConverter(format), argptr);
 979 }
 980
 981 #endif // wxNEED_PRINTF_CONVERSION
 982
 983 #if wxUSE_WCHAR_T
 984
 985 // ----------------------------------------------------------------------------
 986 // ctype.h stuff (currently unused)
 987 // ----------------------------------------------------------------------------
 988
 989 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 990 inline WORD wxMSW_ctype(wxChar ch)
 991 {
 992   WORD ret;
 993   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 994   return ret;
 995 }
 996
 997 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 998 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 999 WXDLLEXPORT int wxIscntrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
1000 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
1001 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
1002 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
1003 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
1004 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
1005 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
1006 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
1007 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
1008 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
1009 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
1010 #endif
1011
1012 #ifndef wxStrdupA
1013
1014 WXDLLEXPORT char *wxStrdupA(const char *s)
1015 {
1016     return strcpy((char *)malloc(strlen(s) + 1), s);
1017 }
1018
1019 #endif // wxStrdupA
1020
1021 #ifndef wxStrdupW
1022
1023 WXDLLEXPORT wchar_t * wxStrdupW(const wchar_t *pwz)
1024 {
1025   size_t size = (wxWcslen(pwz) + 1) * sizeof(wchar_t);
1026   wchar_t *ret = (wchar_t *) malloc(size);
1027   memcpy(ret, pwz, size);
1028   return ret;
1029 }
1030
1031 #endif // wxStrdupW
1032
1033 #ifndef wxStricmp
1034 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
1035 {
1036   register wxChar c1, c2;
1037   do {
1038     c1 = wxTolower(*psz1++);
1039     c2 = wxTolower(*psz2++);
1040   } while ( c1 && (c1 == c2) );
1041   return c1 - c2;
1042 }
1043 #endif
1044
1045 #ifndef wxStricmp
1046 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
1047 {
1048   // initialize the variables just to suppress stupid gcc warning
1049   register wxChar c1 = 0, c2 = 0;
1050   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
1051   if (n) {
1052     if (c1 < c2) return -1;
1053     if (c1 > c2) return 1;
1054   }
1055   return 0;
1056 }
1057 #endif
1058
1059 #ifndef wxSetlocale
1060 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
1061 {
1062     char *localeOld = setlocale(category, wxConvLocal.cWX2MB(locale));
1063
1064     return wxWCharBuffer(wxConvLocal.cMB2WC(localeOld));
1065 }
1066 #endif
1067
1068 // ----------------------------------------------------------------------------
1069 // string.h functions
1070 // ----------------------------------------------------------------------------
1071
1072 #ifdef wxNEED_WX_STRING_H
1073 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
1074 {
1075   wxChar *ret = dest;
1076   while (*dest) dest++;
1077   while ((*dest++ = *src++));
1078   return ret;
1079 }
1080
1081 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
1082 {
1083     // be careful here as the terminating NUL makes part of the string
1084     while ( *s != c )
1085     {
1086         if ( !*s++ )
1087             return NULL;
1088     }
1089
1090     return s;
1091 }
1092
1093 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
1094 {
1095   while ((*s1 == *s2) && *s1) s1++, s2++;
1096   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1097   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1098   return 0;
1099 }
1100
1101 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
1102 {
1103   wxChar *ret = dest;
1104   while ((*dest++ = *src++));
1105   return ret;
1106 }
1107
1108 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
1109 {
1110   wxChar *ret = dest;
1111   while (*dest) dest++;
1112   while (n && (*dest++ = *src++)) n--;
1113   return ret;
1114 }
1115
1116 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
1117 {
1118   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
1119   if (n) {
1120     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1121     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1122   }
1123   return 0;
1124 }
1125
1126 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
1127 {
1128   wxChar *ret = dest;
1129   while (n && (*dest++ = *src++)) n--;
1130   while (n) *dest++=0, n--; // the docs specify padding with zeroes
1131   return ret;
1132 }
1133
1134 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
1135 {
1136   while (*s && !wxStrchr(accept, *s))
1137       s++;
1138
1139   return *s ? s : NULL;
1140 }
1141
1142 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
1143 {
1144     const wxChar *ret = NULL;
1145     do
1146     {
1147         if ( *s == c )
1148             ret = s;
1149         s++;
1150     }
1151     while ( *s );
1152
1153     return ret;
1154 }
1155
1156 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
1157 {
1158   size_t len = 0;
1159   while (wxStrchr(accept, *s++)) len++;
1160   return len;
1161 }
1162
1163 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
1164 {
1165     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
1166
1167     // VZ: this is not exactly the most efficient string search algorithm...
1168
1169     const size_t len = wxStrlen(needle);
1170
1171     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
1172     {
1173         if ( !wxStrncmp(fnd, needle, len) )
1174             return fnd;
1175
1176         haystack = fnd + 1;
1177     }
1178
1179     return NULL;
1180 }
1181
1182 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
1183 {
1184   const wxChar *start = nptr;
1185
1186   // FIXME: only correct for C locale
1187   while (wxIsspace(*nptr)) nptr++;
1188   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1189   while (wxIsdigit(*nptr)) nptr++;
1190   if (*nptr == wxT('.')) {
1191     nptr++;
1192     while (wxIsdigit(*nptr)) nptr++;
1193   }
1194   if (*nptr == wxT('E') || *nptr == wxT('e')) {
1195     nptr++;
1196     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1197     while (wxIsdigit(*nptr)) nptr++;
1198   }
1199
1200   wxString data(nptr, nptr-start);
1201   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1202   char *rdat = wxMBSTRINGCAST dat;
1203   double ret = strtod(dat, &rdat);
1204
1205   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1206
1207   return ret;
1208 }
1209
1210 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
1211 {
1212   const wxChar *start = nptr;
1213
1214   // FIXME: only correct for C locale
1215   while (wxIsspace(*nptr)) nptr++;
1216   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1217   if (((base == 0) || (base == 16)) &&
1218       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
1219     nptr += 2;
1220     base = 16;
1221   }
1222   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
1223   else if (base == 0) base = 10;
1224
1225   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
1226          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
1227
1228   wxString data(nptr, nptr-start);
1229   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1230   char *rdat = wxMBSTRINGCAST dat;
1231   long int ret = strtol(dat, &rdat, base);
1232
1233   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1234
1235   return ret;
1236 }
1237 #endif // wxNEED_WX_STRING_H
1238
1239 #ifdef wxNEED_WX_STDIO_H
1240 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
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 fopen( wxConvFile.cWX2MB(path), mode_buffer );
1247 }
1248
1249 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
1250 {
1251     char mode_buffer[10];
1252     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1253        mode_buffer[i] = (char) mode[i];
1254
1255     return freopen( wxConvFile.cWX2MB(path), mode_buffer, stream );
1256 }
1257
1258 WXDLLEXPORT int wxRemove(const wxChar *path)
1259 {
1260     return remove( wxConvFile.cWX2MB(path) );
1261 }
1262
1263 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
1264 {
1265     return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
1266 }
1267 #endif
1268
1269 #ifndef wxAtof
1270 double   WXDLLEXPORT wxAtof(const wxChar *psz)
1271 {
1272 #ifdef __WXWINCE__
1273     double d;
1274     wxString str(psz);
1275     if (str.ToDouble(& d))
1276         return d;
1277     else
1278         return 0.0;
1279 #else
1280     return atof(wxConvLocal.cWX2MB(psz));
1281 #endif
1282 }
1283 #endif
1284
1285 #ifdef wxNEED_WX_STDLIB_H
1286 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
1287 {
1288   return atoi(wxConvLocal.cWX2MB(psz));
1289 }
1290
1291 long     WXDLLEXPORT wxAtol(const wxChar *psz)
1292 {
1293   return atol(wxConvLocal.cWX2MB(psz));
1294 }
1295
1296 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
1297 {
1298   static wxHashTable env;
1299
1300   // check if we already have stored the converted env var
1301   wxObject *data = env.Get(name);
1302   if (!data)
1303   {
1304     // nope, retrieve it,
1305 #if wxUSE_UNICODE
1306     wxCharBuffer buffer = wxConvLocal.cWX2MB(name);
1307     // printf( "buffer %s\n", (const char*) buffer );
1308     const char *val = getenv( (const char *)buffer );
1309 #else
1310     const char *val = getenv( name );
1311 #endif
1312
1313     if (!val) return (wxChar *)NULL;
1314     // printf( "home %s\n", val );
1315
1316     // convert it,
1317 #if wxUSE_UNICODE
1318     data = (wxObject *)new wxString(val, wxConvLocal);
1319 #else
1320     data = (wxObject *)new wxString(val);
1321 #endif
1322
1323     // and store it
1324     env.Put(name, data);
1325   }
1326   // return converted env var
1327   return (wxChar *)((wxString *)data)->c_str();
1328 }
1329
1330 int WXDLLEXPORT wxSystem(const wxChar *psz)
1331 {
1332     return system(wxConvLocal.cWX2MB(psz));
1333 }
1334
1335 #endif // wxNEED_WX_STDLIB_H
1336
1337 #ifdef wxNEED_WX_TIME_H
1338 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
1339 {
1340     if (!max) return 0;
1341
1342     char *buf = (char *)malloc(max);
1343     size_t ret = strftime(buf, max, wxConvLocal.cWX2MB(fmt), tm);
1344     if (ret)
1345     {
1346         wxStrcpy(s, wxConvLocal.cMB2WX(buf));
1347         free(buf);
1348         return wxStrlen(s);
1349     }
1350     else
1351     {
1352         free(buf);
1353         *s = 0;
1354         return 0;
1355   }
1356 }
1357 #endif // wxNEED_WX_TIME_H
1358
1359 #ifndef wxCtime
1360 WXDLLEXPORT wxChar *wxCtime(const time_t *timep)
1361 {
1362     static wxChar   buf[128];
1363
1364     wxStrncpy( buf, wxConvertMB2WX( ctime( timep ) ), sizeof( buf ) );
1365     buf[ sizeof( buf ) - 1 ] = _T('\0');
1366
1367     return buf;
1368 }
1369 #endif // wxCtime
1370
1371 #endif // wxUSE_WCHAR_T
1372
1373 // ----------------------------------------------------------------------------
1374 // functions which we may need even if !wxUSE_WCHAR_T
1375 // ----------------------------------------------------------------------------
1376
1377 #ifndef wxStrtok
1378
1379 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
1380 {
1381     if (!psz)
1382     {
1383         psz = *save_ptr;
1384         if ( !psz )
1385             return NULL;
1386     }
1387
1388     psz += wxStrspn(psz, delim);
1389     if (!*psz)
1390     {
1391         *save_ptr = (wxChar *)NULL;
1392         return (wxChar *)NULL;
1393     }
1394
1395     wxChar *ret = psz;
1396     psz = wxStrpbrk(psz, delim);
1397     if (!psz)
1398     {
1399         *save_ptr = (wxChar*)NULL;
1400     }
1401     else
1402     {
1403         *psz = wxT('\0');
1404         *save_ptr = psz + 1;
1405     }
1406
1407     return ret;
1408 }
1409
1410 #endif // wxStrtok
1411
1412 // ----------------------------------------------------------------------------
1413 // missing C RTL functions
1414 // ----------------------------------------------------------------------------
1415
1416 #if (defined(__MWERKS__) && !defined(__MACH__) && (__MSL__ < 0x00008000)) || \
1417      defined(__WXWINCE__)
1418 char *strdup(const char *s)
1419 {
1420     char *dest = (char*) malloc( strlen( s ) + 1 ) ;
1421     if ( dest )
1422         strcpy( dest , s ) ;
1423     return dest ;
1424 }
1425 #endif
1426
1427 #if (defined(__MWERKS__) && !defined(__MACH__)) || (defined(__WXWINCE__) && _WIN32_WCE <= 211)
1428
1429 int isascii( int c )
1430 {
1431     return ( c >= 0 && c < 128 );
1432 }
1433 #endif
1434
1435 #if defined(__WXWINCE__) && (_WIN32_WCE <= 211)
1436 #if (_WIN32_WCE < 300)
1437 void *calloc( size_t num, size_t size )
1438 {
1439     void** ptr = (void **)malloc(num * size);
1440     memset( ptr, 0, num * size);
1441     return ptr;
1442 }
1443 #endif
1444
1445 int isspace(int c)
1446 {
1447     return (c == ' ');
1448 }
1449
1450 #endif
1451