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) wxWidgets 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                 { \
 202                     if ( lenCur == lenMax ) \
 203                         return -1; \
 204                     \
 205                     buf[lenCur++] = ch; \
 206                 }
 207
 208 #define APPEND_STR(s) \
 209                 { \
 210                     for ( const wxChar *p = s; *p; p++ ) \
 211                     { \
 212                         APPEND_CH(*p); \
 213                     } \
 214                 }
 215
 216                 // what follows '%'?
 217                 const wxChar ch = format[++n];
 218                 switch ( ch )
 219                 {
 220                     case wxT('\0'):
 221                         APPEND_CH(_T('\0'));
 222
 223                         done = TRUE;
 224                         break;
 225
 226                     case wxT('%'):
 227                         APPEND_CH(_T('%'));
 228                         done = TRUE;
 229                         break;
 230
 231                     case wxT('#'):
 232                     case wxT('0'):
 233                     case wxT(' '):
 234                     case wxT('+'):
 235                     case wxT('\''):
 236                         CHECK_PREC
 237                         s_szFlags[flagofs++] = ch;
 238                         break;
 239
 240                     case wxT('-'):
 241                         CHECK_PREC
 242                         adj_left = TRUE;
 243                         s_szFlags[flagofs++] = ch;
 244                         break;
 245
 246                     case wxT('.'):
 247                         CHECK_PREC
 248                         in_prec = TRUE;
 249                         prec_dot = FALSE;
 250                         max_width = 0;
 251                         // dot will be auto-added to s_szFlags if non-negative
 252                         // number follows
 253                         break;
 254
 255                     case wxT('h'):
 256                         ilen = -1;
 257                         CHECK_PREC
 258                         s_szFlags[flagofs++] = ch;
 259                         break;
 260
 261                     case wxT('l'):
 262                         ilen = 1;
 263                         CHECK_PREC
 264                         s_szFlags[flagofs++] = ch;
 265                         break;
 266
 267                     case wxT('q'):
 268                     case wxT('L'):
 269                         ilen = 2;
 270                         CHECK_PREC
 271                         s_szFlags[flagofs++] = ch;
 272                         break;
 273
 274                     case wxT('Z'):
 275                         ilen = 3;
 276                         CHECK_PREC
 277                         s_szFlags[flagofs++] = ch;
 278                         break;
 279
 280                     case wxT('*'):
 281                         {
 282                             int len = va_arg(argptr, int);
 283                             if (in_prec)
 284                             {
 285                                 if (len<0) break;
 286                                 CHECK_PREC
 287                                     max_width = len;
 288                             }
 289                             else
 290                             {
 291                                 if (len<0)
 292                                 {
 293                                     adj_left = !adj_left;
 294                                     s_szFlags[flagofs++] = '-';
 295                                     len = -len;
 296                                 }
 297                                 min_width = len;
 298                             }
 299                             flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
 300                         }
 301                         break;
 302
 303                     case wxT('1'): case wxT('2'): case wxT('3'):
 304                     case wxT('4'): case wxT('5'): case wxT('6'):
 305                     case wxT('7'): case wxT('8'): case wxT('9'):
 306                         {
 307                             int len = 0;
 308                             CHECK_PREC
 309                             while ( (format[n] >= wxT('0')) &&
 310                                     (format[n] <= wxT('9')) )
 311                             {
 312                                 s_szFlags[flagofs++] = format[n];
 313                                 len = len*10 + (format[n] - wxT('0'));
 314                                 n++;
 315                             }
 316
 317                             if (in_prec)
 318                                 max_width = len;
 319                             else
 320                                 min_width = len;
 321
 322                             n--; // the main loop pre-increments n again
 323                         }
 324                         break;
 325
 326                     case wxT('d'):
 327                     case wxT('i'):
 328                     case wxT('o'):
 329                     case wxT('u'):
 330                     case wxT('x'):
 331                     case wxT('X'):
 332                         CHECK_PREC
 333                         s_szFlags[flagofs++] = ch;
 334                         s_szFlags[flagofs] = '\0';
 335                         if (ilen == 0 )
 336                         {
 337                             int val = va_arg(argptr, int);
 338                             ::sprintf(szScratch, s_szFlags, val);
 339                         }
 340                         else if (ilen == -1)
 341                         {
 342                             // NB: 'short int' value passed through '...'
 343                             //      is promoted to 'int', so we have to get
 344                             //      an int from stack even if we need a short
 345                             short int val = (short int) va_arg(argptr, int);
 346                             ::sprintf(szScratch, s_szFlags, val);
 347                         }
 348                         else if (ilen == 1)
 349                         {
 350                             long int val = va_arg(argptr, long int);
 351                             ::sprintf(szScratch, s_szFlags, val);
 352                         }
 353                         else if (ilen == 2)
 354                         {
 355 #if SIZEOF_LONG_LONG
 356                             long long int val = va_arg(argptr, long long int);
 357                             ::sprintf(szScratch, s_szFlags, val);
 358 #else // !long long
 359                             long int val = va_arg(argptr, long int);
 360                             ::sprintf(szScratch, s_szFlags, val);
 361 #endif // long long/!long long
 362                         }
 363                         else if (ilen == 3)
 364                         {
 365                             size_t val = va_arg(argptr, size_t);
 366                             ::sprintf(szScratch, s_szFlags, val);
 367                         }
 368
 369                         {
 370                             const wxMB2WXbuf tmp =
 371                                 wxConvLibc.cMB2WX(szScratch);
 372                             APPEND_STR(tmp);
 373                         }
 374
 375                         done = TRUE;
 376                         break;
 377
 378                     case wxT('e'):
 379                     case wxT('E'):
 380                     case wxT('f'):
 381                     case wxT('g'):
 382                     case wxT('G'):
 383                         CHECK_PREC
 384                         s_szFlags[flagofs++] = ch;
 385                         s_szFlags[flagofs] = '\0';
 386                         if (ilen == 2)
 387                         {
 388                             long double val = va_arg(argptr, long double);
 389                             ::sprintf(szScratch, s_szFlags, val);
 390                         }
 391                         else
 392                         {
 393                             double val = va_arg(argptr, double);
 394                             ::sprintf(szScratch, s_szFlags, val);
 395                         }
 396
 397                         {
 398                             const wxMB2WXbuf tmp =
 399                                 wxConvLibc.cMB2WX(szScratch);
 400                             APPEND_STR(tmp);
 401                         }
 402
 403                         done = TRUE;
 404                         break;
 405
 406                     case wxT('p'):
 407                         {
 408                             void *val = va_arg(argptr, void *);
 409                             CHECK_PREC
 410                             s_szFlags[flagofs++] = ch;
 411                             s_szFlags[flagofs] = '\0';
 412                             ::sprintf(szScratch, s_szFlags, val);
 413
 414                             const wxMB2WXbuf tmp =
 415                                 wxConvLibc.cMB2WX(szScratch);
 416                             APPEND_STR(tmp);
 417
 418                             done = TRUE;
 419                         }
 420                         break;
 421
 422                     case wxT('c'):
 423                         {
 424                             int val = va_arg(argptr, int);
 425 #if wxUSE_UNICODE
 426                             if (ilen == -1)
 427                             {
 428                                 const char buf[2] = { val, 0 };
 429                                 val = wxString(buf, wxConvLibc)[0u];
 430                             }
 431 #elif wxUSE_WCHAR_T
 432                             if (ilen == 1)
 433                             {
 434                                 const wchar_t buf[2] = { val, 0 };
 435                                 val = wxString(buf, wxConvLibc)[0u];
 436                             }
 437 #endif
 438                             size_t i;
 439
 440                             if (!adj_left)
 441                                 for (i = 1; i < min_width; i++)
 442                                     APPEND_CH(_T(' '));
 443
 444                             APPEND_CH(val);
 445
 446                             if (adj_left)
 447                                 for (i = 1; i < min_width; i++)
 448                                     APPEND_CH(_T(' '));
 449
 450                             done = TRUE;
 451                         }
 452                         break;
 453
 454                     case wxT('s'):
 455                         {
 456                             const wxChar *val = NULL;
 457 #if wxUSE_UNICODE
 458                             wxString s;
 459
 460                             if (ilen == -1)
 461                             {
 462                                 // wx extension: we'll let %hs mean non-Unicode
 463                                 // strings
 464                                 char *v = va_arg(argptr, char *);
 465
 466                                 if (v)
 467                                     val = s = wxString(v, wxConvLibc);
 468                             }
 469                             else
 470 #elif wxUSE_WCHAR_T
 471                             wxString s;
 472
 473                             if (ilen == 1)
 474                             {
 475                                 // %ls means Unicode strings
 476                                 wchar_t *v = va_arg(argptr, wchar_t *);
 477
 478                                 if (v)
 479                                     val = s = wxString(v, wxConvLibc);
 480                             }
 481                             else
 482 #endif
 483                             {
 484                                 val = va_arg(argptr, wxChar *);
 485                             }
 486
 487                             size_t len = 0;
 488
 489                             if (val)
 490                             {
 491                                 for ( len = 0;
 492                                       val[len] && (len < max_width);
 493                                       len++ )
 494                                     ;
 495                             }
 496                             else if (max_width >= 6)
 497                             {
 498                                 val = wxT("(null)");
 499                                 len = 6;
 500                             }
 501                             else
 502                             {
 503                                 val = wxT("");
 504                                 len = 0;
 505                             }
 506
 507                             size_t i;
 508
 509                             if (!adj_left)
 510                                 for (i = len; i < min_width; i++)
 511                                     APPEND_CH(_T(' '));
 512
 513                             for (i = 0; i < len; i++)
 514                                 APPEND_CH(val[i]);
 515
 516                             if (adj_left)
 517                                 for (i = len; i < min_width; i++)
 518                                     APPEND_CH(_T(' '));
 519
 520                             done = TRUE;
 521                         }
 522                         break;
 523
 524                     case wxT('n'):
 525                         if (ilen == 0)
 526                         {
 527                             int *val = va_arg(argptr, int *);
 528                             *val = lenCur;
 529                         }
 530                         else if (ilen == -1)
 531                         {
 532                             short int *val = va_arg(argptr, short int *);
 533                             *val = lenCur;
 534                         }
 535                         else if (ilen >= 1)
 536                         {
 537                             long int *val = va_arg(argptr, long int *);
 538                             *val = lenCur;
 539                         }
 540                         done = TRUE;
 541                         break;
 542
 543                     default:
 544                         // bad format, leave unchanged
 545                         APPEND_CH(_T('%'));
 546                         APPEND_CH(ch);
 547                         done = TRUE;
 548                         break;
 549                 }
 550             }
 551             while (!done);
 552         }
 553         else
 554         {
 555             APPEND_CH(chCur);
 556         }
 557
 558         // terminating NUL?
 559         if ( !chCur )
 560             break;
 561     }
 562
 563     return lenCur;
 564 }
 565
 566 #undef APPEND_CH
 567 #undef APPEND_STR
 568 #undef CHECK_PREC
 569
 570 #endif // !wxVsnprintfA
 571
 572 #if !defined(wxSnprintf_)
 573 int WXDLLEXPORT wxSnprintf_(wxChar *buf, size_t len, const wxChar *format, ...)
 574 {
 575     va_list argptr;
 576     va_start(argptr, format);
 577
 578     int iLen = wxVsnprintf_(buf, len, format, argptr);
 579
 580     va_end(argptr);
 581
 582     return iLen;
 583 }
 584 #endif // wxSnprintf_
 585
 586 #if defined(__DMC__)
 587     /* Digital Mars adds count to _stprintf (C99) so convert */
 588     #if wxUSE_UNICODE
 589         int wxSprintf (wchar_t * __RESTRICT s, const wchar_t * __RESTRICT format, ... )
 590         {
 591             va_list arglist;
 592
 593             va_start( arglist, format );
 594             int iLen = swprintf ( s, -1, format, arglist );
 595             va_end( arglist );
 596             return iLen ;
 597         }
 598
 599     #endif // wxUSE_UNICODE
 600
 601 #endif //__DMC__
 602
 603 // ----------------------------------------------------------------------------
 604 // implement the standard IO functions for wide char if libc doesn't have them
 605 // ----------------------------------------------------------------------------
 606
 607 #ifdef wxNEED_FPUTWC
 608
 609 int wxFputs(const wchar_t *ws, FILE *stream)
 610 {
 611     // counting the number of wide characters written isn't worth the trouble,
 612     // simply distinguish between ok and error
 613     return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
 614 }
 615
 616 int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
 617 {
 618     wchar_t ws[2] = { wc, L'\0' };
 619
 620     return wxFputs(ws, stream);
 621 }
 622
 623 #endif // wxNEED_FPUTWC
 624
 625 // NB: we only implement va_list functions here, the ones taking ... are
 626 //     defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
 627 //     the definitions there to avoid duplicating them here
 628 #ifdef wxNEED_WPRINTF
 629
 630 // TODO: implement the scanf() functions
 631 int vwscanf(const wxChar *format, va_list argptr)
 632 {
 633     wxFAIL_MSG( _T("TODO") );
 634
 635     return -1;
 636 }
 637
 638 int vswscanf(const wxChar *ws, const wxChar *format, va_list argptr)
 639 {
 640     wxFAIL_MSG( _T("TODO") );
 641
 642     return -1;
 643 }
 644
 645 int vfwscanf(FILE *stream, const wxChar *format, va_list argptr)
 646 {
 647     wxFAIL_MSG( _T("TODO") );
 648
 649     return -1;
 650 }
 651
 652 #define vswprintf wxVsnprintf_
 653
 654 int vfwprintf(FILE *stream, const wxChar *format, va_list argptr)
 655 {
 656     wxString s;
 657     int rc = s.PrintfV(format, argptr);
 658
 659     if ( rc != -1 )
 660     {
 661         // we can't do much better without Unicode support in libc...
 662         if ( fprintf(stream, "%s", (const char*)s.mb_str() ) == -1 )
 663             return -1;
 664     }
 665
 666     return rc;
 667 }
 668
 669 int vwprintf(const wxChar *format, va_list argptr)
 670 {
 671     return wxVfprintf(stdout, format, argptr);
 672 }
 673
 674 #endif // wxNEED_WPRINTF
 675
 676 #ifdef wxNEED_PRINTF_CONVERSION
 677
 678 // ----------------------------------------------------------------------------
 679 // wxFormatConverter: class doing the "%s" -> "%ls" conversion
 680 // ----------------------------------------------------------------------------
 681
 682 /*
 683    Here are the gory details. We want to follow the Windows/MS conventions,
 684    that is to have
 685
 686    In ANSI mode:
 687
 688    format specifier         results in
 689    -----------------------------------
 690    %c, %hc, %hC             char
 691    %lc, %C, %lC             wchar_t
 692
 693    In Unicode mode:
 694
 695    format specifier         results in
 696    -----------------------------------
 697    %hc, %C, %hC             char
 698    %c, %lc, %lC             wchar_t
 699
 700
 701    while on POSIX systems we have %C identical to %lc and %c always means char
 702    (in any mode) while %lc always means wchar_t,
 703
 704    So to use native functions in order to get our semantics we must do the
 705    following translations in Unicode mode (nothing to do in ANSI mode):
 706
 707    wxWidgets specifier      POSIX specifier
 708    ----------------------------------------
 709
 710    %hc, %C, %hC             %c
 711    %c                       %lc
 712
 713
 714    And, of course, the same should be done for %s as well.
 715 */
 716
 717 class wxFormatConverter
 718 {
 719 public:
 720     wxFormatConverter(const wxChar *format);
 721
 722     // notice that we only translated the string if m_fmtOrig == NULL (as set
 723     // by CopyAllBefore()), otherwise we should simply use the original format
 724     operator const wxChar *() const
 725         { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
 726
 727 private:
 728     // copy another character to the translated format: this function does the
 729     // copy if we are translating but doesn't do anything at all if we don't,
 730     // so we don't create the translated format string at all unless we really
 731     // need to (i.e. InsertFmtChar() is called)
 732     wxChar CopyFmtChar(wxChar ch)
 733     {
 734         if ( !m_fmtOrig )
 735         {
 736             // we're translating, do copy
 737             m_fmt += ch;
 738         }
 739         else
 740         {
 741             // simply increase the count which should be copied by
 742             // CopyAllBefore() later if needed
 743             m_nCopied++;
 744         }
 745
 746         return ch;
 747     }
 748
 749     // insert an extra character
 750     void InsertFmtChar(wxChar ch)
 751     {
 752         if ( m_fmtOrig )
 753         {
 754             // so far we haven't translated anything yet
 755             CopyAllBefore();
 756         }
 757
 758         m_fmt += ch;
 759     }
 760
 761     void CopyAllBefore()
 762     {
 763         wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
 764
 765         m_fmt = wxString(m_fmtOrig, m_nCopied);
 766
 767         // we won't need it any longer
 768         m_fmtOrig = NULL;
 769     }
 770
 771     static bool IsFlagChar(wxChar ch)
 772     {
 773         return ch == _T('-') || ch == _T('+') ||
 774                ch == _T('0') || ch == _T(' ') || ch == _T('#');
 775     }
 776
 777     void SkipDigits(const wxChar **ptpc)
 778     {
 779         while ( **ptpc >= _T('0') && **ptpc <= _T('9') )
 780             CopyFmtChar(*(*ptpc)++);
 781     }
 782
 783     // the translated format
 784     wxString m_fmt;
 785
 786     // the original format
 787     const wxChar *m_fmtOrig;
 788
 789     // the number of characters already copied
 790     size_t m_nCopied;
 791 };
 792
 793 wxFormatConverter::wxFormatConverter(const wxChar *format)
 794 {
 795     m_fmtOrig = format;
 796     m_nCopied = 0;
 797
 798     while ( *format )
 799     {
 800         if ( CopyFmtChar(*format++) == _T('%') )
 801         {
 802             // skip any flags
 803             while ( IsFlagChar(*format) )
 804                 CopyFmtChar(*format++);
 805
 806             // and possible width
 807             if ( *format == _T('*') )
 808                 CopyFmtChar(*format++);
 809             else
 810                 SkipDigits(&format);
 811
 812             // precision?
 813             if ( *format == _T('.') )
 814             {
 815                 CopyFmtChar(*format++);
 816                 if ( *format == _T('*') )
 817                     CopyFmtChar(*format++);
 818                 else
 819                     SkipDigits(&format);
 820             }
 821
 822             // next we can have a size modifier
 823             enum
 824             {
 825                 Default,
 826                 Short,
 827                 Long
 828             } size;
 829
 830             switch ( *format )
 831             {
 832                 case _T('h'):
 833                     size = Short;
 834                     format++;
 835                     break;
 836
 837                 case _T('l'):
 838                     // "ll" has a different meaning!
 839                     if ( format[1] != _T('l') )
 840                     {
 841                         size = Long;
 842                         format++;
 843                         break;
 844                     }
 845                     //else: fall through
 846
 847                 default:
 848                     size = Default;
 849             }
 850
 851             // and finally we should have the type
 852             switch ( *format )
 853             {
 854                 case _T('C'):
 855                 case _T('S'):
 856                     // %C and %hC -> %c and %lC -> %lc
 857                     if ( size == Long )
 858                         CopyFmtChar(_T('l'));
 859
 860                     InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
 861                     break;
 862
 863                 case _T('c'):
 864                 case _T('s'):
 865                     // %c -> %lc but %hc stays %hc and %lc is still %lc
 866                     if ( size == Default)
 867                         InsertFmtChar(_T('l'));
 868                     // fall through
 869
 870                 default:
 871                     // nothing special to do
 872                     if ( size != Default )
 873                         CopyFmtChar(*(format - 1));
 874                     CopyFmtChar(*format++);
 875             }
 876         }
 877     }
 878 }
 879
 880 #else // !wxNEED_PRINTF_CONVERSION
 881     // no conversion necessary
 882     #define wxFormatConverter(x) (x)
 883 #endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
 884
 885 #ifdef __WXDEBUG__
 886 // For testing the format converter
 887 wxString wxConvertFormat(const wxChar *format)
 888 {
 889     return wxString(wxFormatConverter(format));
 890 }
 891 #endif
 892
 893 // ----------------------------------------------------------------------------
 894 // wxPrintf(), wxScanf() and relatives
 895 // ----------------------------------------------------------------------------
 896
 897 #if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
 898
 899 int wxScanf( const wxChar *format, ... )
 900 {
 901     va_list argptr;
 902     va_start(argptr, format);
 903
 904     int ret = vwscanf(wxFormatConverter(format), argptr );
 905
 906     va_end(argptr);
 907
 908     return ret;
 909 }
 910
 911 int wxSscanf( const wxChar *str, const wxChar *format, ... )
 912 {
 913     va_list argptr;
 914     va_start(argptr, format);
 915
 916     int ret = vswscanf( str, wxFormatConverter(format), argptr );
 917
 918     va_end(argptr);
 919
 920     return ret;
 921 }
 922
 923 int wxFscanf( FILE *stream, const wxChar *format, ... )
 924 {
 925     va_list argptr;
 926     va_start(argptr, format);
 927     int ret = vfwscanf(stream, wxFormatConverter(format), argptr);
 928
 929     va_end(argptr);
 930
 931     return ret;
 932 }
 933
 934 int wxPrintf( const wxChar *format, ... )
 935 {
 936     va_list argptr;
 937     va_start(argptr, format);
 938
 939     int ret = vwprintf( wxFormatConverter(format), argptr );
 940
 941     va_end(argptr);
 942
 943     return ret;
 944 }
 945
 946 #ifndef wxSnprintf
 947 int wxSnprintf( wxChar *str, size_t size, const wxChar *format, ... )
 948 {
 949     va_list argptr;
 950     va_start(argptr, format);
 951
 952     int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
 953
 954     va_end(argptr);
 955
 956     return ret;
 957 }
 958 #endif // wxSnprintf
 959
 960 int wxSprintf( wxChar *str, const wxChar *format, ... )
 961 {
 962     va_list argptr;
 963     va_start(argptr, format);
 964
 965     // note that wxString::FormatV() uses wxVsnprintf(), not wxSprintf(), so
 966     // it's safe to implement this one in terms of it
 967     wxString s(wxString::FormatV(format, argptr));
 968     wxStrcpy(str, s);
 969
 970     va_end(argptr);
 971
 972     return s.length();
 973 }
 974
 975 int wxFprintf( FILE *stream, const wxChar *format, ... )
 976 {
 977     va_list argptr;
 978     va_start( argptr, format );
 979
 980     int ret = vfwprintf( stream, wxFormatConverter(format), argptr );
 981
 982     va_end(argptr);
 983
 984     return ret;
 985 }
 986
 987 int wxVsscanf( const wxChar *str, const wxChar *format, va_list argptr )
 988 {
 989     return vswscanf( str, wxFormatConverter(format), argptr );
 990 }
 991
 992 int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr )
 993 {
 994     return vfwprintf( stream, wxFormatConverter(format), argptr );
 995 }
 996
 997 int wxVprintf( const wxChar *format, va_list argptr )
 998 {
 999     return vwprintf( wxFormatConverter(format), argptr );
1000 }
1001
1002 #ifndef wxVsnprintf
1003 int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list argptr )
1004 {
1005     return vswprintf( str, size, wxFormatConverter(format), argptr );
1006 }
1007 #endif // wxVsnprintf
1008
1009 int wxVsprintf( wxChar *str, const wxChar *format, va_list argptr )
1010 {
1011     // same as for wxSprintf()
1012     return vswprintf(str, INT_MAX / 4, wxFormatConverter(format), argptr);
1013 }
1014
1015 #endif // wxNEED_PRINTF_CONVERSION
1016
1017 #if wxUSE_WCHAR_T
1018
1019 // ----------------------------------------------------------------------------
1020 // ctype.h stuff (currently unused)
1021 // ----------------------------------------------------------------------------
1022
1023 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
1024 inline WORD wxMSW_ctype(wxChar ch)
1025 {
1026   WORD ret;
1027   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
1028   return ret;
1029 }
1030
1031 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
1032 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
1033 WXDLLEXPORT int wxIscntrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
1034 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
1035 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
1036 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
1037 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
1038 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
1039 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
1040 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
1041 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
1042 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
1043 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
1044 #endif
1045
1046 #ifndef wxStrdupA
1047
1048 WXDLLEXPORT char *wxStrdupA(const char *s)
1049 {
1050     return strcpy((char *)malloc(strlen(s) + 1), s);
1051 }
1052
1053 #endif // wxStrdupA
1054
1055 #ifndef wxStrdupW
1056
1057 WXDLLEXPORT wchar_t * wxStrdupW(const wchar_t *pwz)
1058 {
1059   size_t size = (wxWcslen(pwz) + 1) * sizeof(wchar_t);
1060   wchar_t *ret = (wchar_t *) malloc(size);
1061   memcpy(ret, pwz, size);
1062   return ret;
1063 }
1064
1065 #endif // wxStrdupW
1066
1067 #ifndef wxStricmp
1068 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
1069 {
1070   register wxChar c1, c2;
1071   do {
1072     c1 = wxTolower(*psz1++);
1073     c2 = wxTolower(*psz2++);
1074   } while ( c1 && (c1 == c2) );
1075   return c1 - c2;
1076 }
1077 #endif
1078
1079 #ifndef wxStricmp
1080 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
1081 {
1082   // initialize the variables just to suppress stupid gcc warning
1083   register wxChar c1 = 0, c2 = 0;
1084   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
1085   if (n) {
1086     if (c1 < c2) return -1;
1087     if (c1 > c2) return 1;
1088   }
1089   return 0;
1090 }
1091 #endif
1092
1093 #ifndef wxSetlocale
1094 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
1095 {
1096     char *localeOld = setlocale(category, wxConvLocal.cWX2MB(locale));
1097
1098     return wxWCharBuffer(wxConvLocal.cMB2WC(localeOld));
1099 }
1100 #endif
1101
1102 // ----------------------------------------------------------------------------
1103 // string.h functions
1104 // ----------------------------------------------------------------------------
1105
1106 #ifdef wxNEED_WX_STRING_H
1107 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
1108 {
1109   wxChar *ret = dest;
1110   while (*dest) dest++;
1111   while ((*dest++ = *src++));
1112   return ret;
1113 }
1114
1115 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
1116 {
1117     // be careful here as the terminating NUL makes part of the string
1118     while ( *s != c )
1119     {
1120         if ( !*s++ )
1121             return NULL;
1122     }
1123
1124     return s;
1125 }
1126
1127 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
1128 {
1129   while ((*s1 == *s2) && *s1) s1++, s2++;
1130   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1131   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1132   return 0;
1133 }
1134
1135 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
1136 {
1137   wxChar *ret = dest;
1138   while ((*dest++ = *src++));
1139   return ret;
1140 }
1141
1142 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
1143 {
1144   wxChar *ret = dest;
1145   while (*dest) dest++;
1146   while (n && (*dest++ = *src++)) n--;
1147   return ret;
1148 }
1149
1150 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
1151 {
1152   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
1153   if (n) {
1154     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1155     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1156   }
1157   return 0;
1158 }
1159
1160 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
1161 {
1162   wxChar *ret = dest;
1163   while (n && (*dest++ = *src++)) n--;
1164   while (n) *dest++=0, n--; // the docs specify padding with zeroes
1165   return ret;
1166 }
1167
1168 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
1169 {
1170   while (*s && !wxStrchr(accept, *s))
1171       s++;
1172
1173   return *s ? s : NULL;
1174 }
1175
1176 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
1177 {
1178     const wxChar *ret = NULL;
1179     do
1180     {
1181         if ( *s == c )
1182             ret = s;
1183         s++;
1184     }
1185     while ( *s );
1186
1187     return ret;
1188 }
1189
1190 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
1191 {
1192   size_t len = 0;
1193   while (wxStrchr(accept, *s++)) len++;
1194   return len;
1195 }
1196
1197 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
1198 {
1199     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
1200
1201     // VZ: this is not exactly the most efficient string search algorithm...
1202
1203     const size_t len = wxStrlen(needle);
1204
1205     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
1206     {
1207         if ( !wxStrncmp(fnd, needle, len) )
1208             return fnd;
1209
1210         haystack = fnd + 1;
1211     }
1212
1213     return NULL;
1214 }
1215
1216 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
1217 {
1218   const wxChar *start = nptr;
1219
1220   // FIXME: only correct for C locale
1221   while (wxIsspace(*nptr)) nptr++;
1222   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1223   while (wxIsdigit(*nptr)) nptr++;
1224   if (*nptr == wxT('.')) {
1225     nptr++;
1226     while (wxIsdigit(*nptr)) nptr++;
1227   }
1228   if (*nptr == wxT('E') || *nptr == wxT('e')) {
1229     nptr++;
1230     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1231     while (wxIsdigit(*nptr)) nptr++;
1232   }
1233
1234   wxString data(nptr, nptr-start);
1235   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1236   char *rdat = wxMBSTRINGCAST dat;
1237   double ret = strtod(dat, &rdat);
1238
1239   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1240
1241   return ret;
1242 }
1243
1244 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
1245 {
1246   const wxChar *start = nptr;
1247
1248   // FIXME: only correct for C locale
1249   while (wxIsspace(*nptr)) nptr++;
1250   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1251   if (((base == 0) || (base == 16)) &&
1252       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
1253     nptr += 2;
1254     base = 16;
1255   }
1256   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
1257   else if (base == 0) base = 10;
1258
1259   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
1260          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
1261
1262   wxString data(nptr, nptr-start);
1263   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1264   char *rdat = wxMBSTRINGCAST dat;
1265   long int ret = strtol(dat, &rdat, base);
1266
1267   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1268
1269   return ret;
1270 }
1271 #endif // wxNEED_WX_STRING_H
1272
1273 #ifdef wxNEED_WX_STDIO_H
1274 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
1275 {
1276     char mode_buffer[10];
1277     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1278        mode_buffer[i] = (char) mode[i];
1279
1280     return fopen( wxConvFile.cWX2MB(path), mode_buffer );
1281 }
1282
1283 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
1284 {
1285     char mode_buffer[10];
1286     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1287        mode_buffer[i] = (char) mode[i];
1288
1289     return freopen( wxConvFile.cWX2MB(path), mode_buffer, stream );
1290 }
1291
1292 WXDLLEXPORT int wxRemove(const wxChar *path)
1293 {
1294     return remove( wxConvFile.cWX2MB(path) );
1295 }
1296
1297 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
1298 {
1299     return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
1300 }
1301 #endif
1302
1303 #ifndef wxAtof
1304 double   WXDLLEXPORT wxAtof(const wxChar *psz)
1305 {
1306 #ifdef __WXWINCE__
1307     double d;
1308     wxString str(psz);
1309     if (str.ToDouble(& d))
1310         return d;
1311     else
1312         return 0.0;
1313 #else
1314     return atof(wxConvLocal.cWX2MB(psz));
1315 #endif
1316 }
1317 #endif
1318
1319 #ifdef wxNEED_WX_STDLIB_H
1320 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
1321 {
1322   return atoi(wxConvLocal.cWX2MB(psz));
1323 }
1324
1325 long     WXDLLEXPORT wxAtol(const wxChar *psz)
1326 {
1327   return atol(wxConvLocal.cWX2MB(psz));
1328 }
1329
1330 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
1331 {
1332   static wxHashTable env;
1333
1334   // check if we already have stored the converted env var
1335   wxObject *data = env.Get(name);
1336   if (!data)
1337   {
1338     // nope, retrieve it,
1339 #if wxUSE_UNICODE
1340     wxCharBuffer buffer = wxConvLocal.cWX2MB(name);
1341     // printf( "buffer %s\n", (const char*) buffer );
1342     const char *val = getenv( (const char *)buffer );
1343 #else
1344     const char *val = getenv( name );
1345 #endif
1346
1347     if (!val) return (wxChar *)NULL;
1348     // printf( "home %s\n", val );
1349
1350     // convert it,
1351 #if wxUSE_UNICODE
1352     data = (wxObject *)new wxString(val, wxConvLocal);
1353 #else
1354     data = (wxObject *)new wxString(val);
1355 #endif
1356
1357     // and store it
1358     env.Put(name, data);
1359   }
1360   // return converted env var
1361   return (wxChar *)((wxString *)data)->c_str();
1362 }
1363
1364 int WXDLLEXPORT wxSystem(const wxChar *psz)
1365 {
1366     return system(wxConvLocal.cWX2MB(psz));
1367 }
1368
1369 #endif // wxNEED_WX_STDLIB_H
1370
1371 #ifdef wxNEED_WX_TIME_H
1372 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
1373 {
1374     if (!max) return 0;
1375
1376     char *buf = (char *)malloc(max);
1377     size_t ret = strftime(buf, max, wxConvLocal.cWX2MB(fmt), tm);
1378     if (ret)
1379     {
1380         wxStrcpy(s, wxConvLocal.cMB2WX(buf));
1381         free(buf);
1382         return wxStrlen(s);
1383     }
1384     else
1385     {
1386         free(buf);
1387         *s = 0;
1388         return 0;
1389   }
1390 }
1391 #endif // wxNEED_WX_TIME_H
1392
1393 #ifndef wxCtime
1394 WXDLLEXPORT wxChar *wxCtime(const time_t *timep)
1395 {
1396     static wxChar   buf[128];
1397
1398     wxStrncpy( buf, wxConvertMB2WX( ctime( timep ) ), sizeof( buf ) );
1399     buf[ sizeof( buf ) - 1 ] = _T('\0');
1400
1401     return buf;
1402 }
1403 #endif // wxCtime
1404
1405 #endif // wxUSE_WCHAR_T
1406
1407 // ----------------------------------------------------------------------------
1408 // functions which we may need even if !wxUSE_WCHAR_T
1409 // ----------------------------------------------------------------------------
1410
1411 #ifndef wxStrtok
1412
1413 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
1414 {
1415     if (!psz)
1416     {
1417         psz = *save_ptr;
1418         if ( !psz )
1419             return NULL;
1420     }
1421
1422     psz += wxStrspn(psz, delim);
1423     if (!*psz)
1424     {
1425         *save_ptr = (wxChar *)NULL;
1426         return (wxChar *)NULL;
1427     }
1428
1429     wxChar *ret = psz;
1430     psz = wxStrpbrk(psz, delim);
1431     if (!psz)
1432     {
1433         *save_ptr = (wxChar*)NULL;
1434     }
1435     else
1436     {
1437         *psz = wxT('\0');
1438         *save_ptr = psz + 1;
1439     }
1440
1441     return ret;
1442 }
1443
1444 #endif // wxStrtok
1445
1446 // ----------------------------------------------------------------------------
1447 // missing C RTL functions
1448 // ----------------------------------------------------------------------------
1449
1450 #if (defined(__MWERKS__) && !defined(__MACH__) && (__MSL__ < 0x00008000)) || \
1451      defined(__WXWINCE__)
1452 char *strdup(const char *s)
1453 {
1454     char *dest = (char*) malloc( strlen( s ) + 1 ) ;
1455     if ( dest )
1456         strcpy( dest , s ) ;
1457     return dest ;
1458 }
1459 #endif
1460
1461 #if (defined(__MWERKS__) && !defined(__MACH__)) || (defined(__WXWINCE__) && _WIN32_WCE <= 211)
1462
1463 int isascii( int c )
1464 {
1465     return ( c >= 0 && c < 128 );
1466 }
1467 #endif
1468
1469 #if defined(__WXWINCE__) && (_WIN32_WCE <= 211)
1470 #if (_WIN32_WCE < 300)
1471 void *calloc( size_t num, size_t size )
1472 {
1473     void** ptr = (void **)malloc(num * size);
1474     memset( ptr, 0, num * size);
1475     return ptr;
1476 }
1477 #endif
1478
1479 int isspace(int c)
1480 {
1481     return (c == ' ');
1482 }
1483
1484 #endif
1485