src/common/wxchar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wxchar.cpp
   3 // Purpose:     wxChar implementation
   4 // Author:      Ove Kåven
   5 // Modified by:
   6 // Created:     09/04/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows copyright
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13   #pragma implementation "wxchar.h"
  14 #endif
  15
  16 // ===========================================================================
  17 // headers, declarations, constants
  18 // ===========================================================================
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24   #pragma hdrstop
  25 #endif
  26
  27 #define _ISOC9X_SOURCE 1 // to get vsscanf()
  28 #define _BSD_SOURCE    1 // to still get strdup()
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <locale.h>
  34 #include <time.h>
  35
  36 #ifndef WX_PRECOMP
  37   #include "wx/defs.h"
  38   #include "wx/wxchar.h"
  39   #include "wx/string.h"
  40   #include "wx/hash.h"
  41 #endif
  42
  43 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
  44   #include <windef.h>
  45   #include <winbase.h>
  46   #include <winnls.h>
  47   #include <winnt.h>
  48 #endif
  49
  50 #if wxUSE_WCHAR_T
  51 size_t WXDLLEXPORT wxMB2WC(wchar_t *buf, const char *psz, size_t n)
  52 {
  53   if (buf) {
  54     if (!n || !*psz) {
  55       if (n) *buf = wxT('\0');
  56       return 0;
  57     }
  58     return mbstowcs(buf, psz, n);
  59   }
  60
  61   // assume that we have mbsrtowcs() too if we have wcsrtombs()
  62 #ifdef HAVE_WCSRTOMBS
  63   mbstate_t mbstate;
  64   return mbsrtowcs((wchar_t *) NULL, &psz, 0, &mbstate);
  65 #else  // !GNU libc
  66   return mbstowcs((wchar_t *) NULL, psz, 0);
  67 #endif // GNU
  68 }
  69
  70 size_t WXDLLEXPORT wxWC2MB(char *buf, const wchar_t *pwz, size_t n)
  71 {
  72   if (buf) {
  73     if (!n || !*pwz) {
  74       // glibc2.1 chokes on null input
  75       if (n) *buf = '\0';
  76       return 0;
  77     }
  78     return wcstombs(buf, pwz, n);
  79   }
  80
  81 #if HAVE_WCSRTOMBS
  82   mbstate_t mbstate;
  83   return wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
  84 #else  // !GNU libc
  85   return wcstombs((char *) NULL, pwz, 0);
  86 #endif // GNU
  87 }
  88 #endif // wxUSE_WCHAR_T
  89
  90 bool WXDLLEXPORT wxOKlibc()
  91 {
  92 #if wxUSE_WCHAR_T && defined(__UNIX__) && defined(__GLIBC__)
  93   // glibc 2.0 uses UTF-8 even when it shouldn't
  94   wchar_t res = 0;
  95   if ((MB_CUR_MAX == 2) &&
  96       (wxMB2WC(&res, "\xdd\xa5", 1) == 1) &&
  97       (res==0x765)) {
  98     // this is UTF-8 allright, check whether that's what we want
  99     char *cur_locale = setlocale(LC_CTYPE, NULL);
 100     if ((strlen(cur_locale) < 4) ||
 101             (strcasecmp(cur_locale + strlen(cur_locale) - 4, "utf8")) ||
 102             (strcasecmp(cur_locale + strlen(cur_locale) - 5, "utf-8"))) {
 103       // nope, don't use libc conversion
 104       return FALSE;
 105     }
 106   }
 107 #endif
 108   return TRUE;
 109 }
 110
 111 #ifndef HAVE_WCSLEN
 112 size_t   WXDLLEXPORT wcslen(const wchar_t *s)
 113 {
 114   size_t len = 0;
 115   while (s[len]) len++;
 116   return len;
 117 }
 118 #endif
 119
 120 // ============================================================================
 121 // printf() functions business
 122 // ============================================================================
 123
 124 // ----------------------------------------------------------------------------
 125 // implement [v]snprintf() if the system doesn't provide a safe one
 126 // ----------------------------------------------------------------------------
 127
 128 #if !defined(wxVsnprintf_)
 129 int WXDLLEXPORT wxVsnprintf_(wxChar *buf, size_t lenMax,
 130                              const wxChar *format, va_list argptr)
 131 {
 132     // buffer to avoid dynamic memory allocation each time for small strings
 133     char szScratch[1024];
 134
 135     // number of characters in the buffer so far, must be less than lenMax
 136     size_t lenCur = 0;
 137
 138     for (size_t n = 0; format[n]; n++)
 139     {
 140         if (format[n] == wxT('%')) {
 141             static char s_szFlags[256] = "%";
 142             size_t flagofs = 1;
 143             bool adj_left = FALSE,
 144                  in_prec = FALSE,
 145                  prec_dot = FALSE,
 146                  done = FALSE;
 147             int ilen = 0;
 148             size_t min_width = 0,
 149                    max_width = wxSTRING_MAXLEN;
 150             do {
 151
 152 #define CHECK_PREC \
 153                 if (in_prec && !prec_dot) \
 154                 { \
 155                     s_szFlags[flagofs++] = '.'; \
 156                     prec_dot = TRUE; \
 157                 }
 158
 159 #define APPEND_CH(ch) \
 160                 if ( lenCur == lenMax ) \
 161                     return -1; \
 162                 \
 163                 buf[lenCur++] = ch
 164
 165 #define APPEND_STR(s) \
 166                 { \
 167                     for ( const wxChar *p = s; *p; p++ ) \
 168                     { \
 169                         APPEND_CH(*p); \
 170                     } \
 171                 }
 172
 173                 switch (format[++n]) {
 174                     case wxT('\0'):
 175                         APPEND_CH(_T('\0'));
 176
 177                         done = TRUE;
 178                         break;
 179
 180                     case wxT('%'):
 181                         APPEND_CH(_T('%'));
 182                         done = TRUE;
 183                         break;
 184
 185                     case wxT('#'):
 186                     case wxT('0'):
 187                     case wxT(' '):
 188                     case wxT('+'):
 189                     case wxT('\''):
 190                         CHECK_PREC
 191                         s_szFlags[flagofs++] = format[n];
 192                         break;
 193
 194                     case wxT('-'):
 195                         CHECK_PREC
 196                         adj_left = TRUE;
 197                         s_szFlags[flagofs++] = format[n];
 198                         break;
 199
 200                     case wxT('.'):
 201                         CHECK_PREC
 202                             in_prec = TRUE;
 203                         prec_dot = FALSE;
 204                         max_width = 0;
 205                         // dot will be auto-added to s_szFlags if non-negative number follows
 206                         break;
 207
 208                     case wxT('h'):
 209                         ilen = -1;
 210                         CHECK_PREC
 211                         s_szFlags[flagofs++] = format[n];
 212                         break;
 213
 214                     case wxT('l'):
 215                         ilen = 1;
 216                         CHECK_PREC
 217                         s_szFlags[flagofs++] = format[n];
 218                         break;
 219
 220                     case wxT('q'):
 221                     case wxT('L'):
 222                         ilen = 2;
 223                         CHECK_PREC
 224                         s_szFlags[flagofs++] = format[n];
 225                         break;
 226
 227                     case wxT('Z'):
 228                         ilen = 3;
 229                         CHECK_PREC
 230                         s_szFlags[flagofs++] = format[n];
 231                         break;
 232
 233                     case wxT('*'):
 234                         {
 235                             int len = va_arg(argptr, int);
 236                             if (in_prec) {
 237                                 if (len<0) break;
 238                                 CHECK_PREC
 239                                     max_width = len;
 240                             } else {
 241                                 if (len<0) {
 242                                     adj_left = !adj_left;
 243                                     s_szFlags[flagofs++] = '-';
 244                                     len = -len;
 245                                 }
 246                                 min_width = len;
 247                             }
 248                             flagofs += ::sprintf(s_szFlags+flagofs,"%d",len);
 249                         }
 250                         break;
 251
 252                     case wxT('1'): case wxT('2'): case wxT('3'):
 253                     case wxT('4'): case wxT('5'): case wxT('6'):
 254                     case wxT('7'): case wxT('8'): case wxT('9'):
 255                         {
 256                             int len = 0;
 257                             CHECK_PREC
 258                                 while ((format[n]>=wxT('0')) && (format[n]<=wxT('9'))) {
 259                                     s_szFlags[flagofs++] = format[n];
 260                                     len = len*10 + (format[n] - wxT('0'));
 261                                     n++;
 262                                 }
 263                             if (in_prec) max_width = len;
 264                             else min_width = len;
 265                             n--; // the main loop pre-increments n again
 266                         }
 267                         break;
 268
 269                     case wxT('d'):
 270                     case wxT('i'):
 271                     case wxT('o'):
 272                     case wxT('u'):
 273                     case wxT('x'):
 274                     case wxT('X'):
 275                         CHECK_PREC
 276                         s_szFlags[flagofs++] = format[n];
 277                         s_szFlags[flagofs] = '\0';
 278                         if (ilen == 0 ) {
 279                             int val = va_arg(argptr, int);
 280                             ::sprintf(szScratch, s_szFlags, val);
 281                         }
 282                         else if (ilen == -1) {
 283                             // NB: 'short int' value passed through '...'
 284                             //      is promoted to 'int'
 285                             short int val = (short int) va_arg(argptr, int);
 286                             ::sprintf(szScratch, s_szFlags, val);
 287                         }
 288                         else if (ilen == 1) {
 289                             long int val = va_arg(argptr, long int);
 290                             ::sprintf(szScratch, s_szFlags, val);
 291                         }
 292                         else if (ilen == 2) {
 293 #if SIZEOF_LONG_LONG
 294                             long long int val = va_arg(argptr, long long int);
 295                             ::sprintf(szScratch, s_szFlags, val);
 296 #else
 297                             long int val = va_arg(argptr, long int);
 298                             ::sprintf(szScratch, s_szFlags, val);
 299 #endif
 300                         }
 301                         else if (ilen == 3) {
 302                             size_t val = va_arg(argptr, size_t);
 303                             ::sprintf(szScratch, s_szFlags, val);
 304                         }
 305                         {
 306                             const wxMB2WXbuf tmp =
 307                                 wxConvLibc.cMB2WX(szScratch);
 308                             APPEND_STR(tmp);
 309                         }
 310
 311                         done = TRUE;
 312                         break;
 313
 314                     case wxT('e'):
 315                     case wxT('E'):
 316                     case wxT('f'):
 317                     case wxT('g'):
 318                     case wxT('G'):
 319                         CHECK_PREC
 320                         s_szFlags[flagofs++] = format[n];
 321                         s_szFlags[flagofs] = '\0';
 322                         if (ilen == 2) {
 323                             long double val = va_arg(argptr, long double);
 324                             ::sprintf(szScratch, s_szFlags, val);
 325                         } else {
 326                             double val = va_arg(argptr, double);
 327                             ::sprintf(szScratch, s_szFlags, val);
 328                         }
 329                         {
 330                             const wxMB2WXbuf tmp =
 331                                 wxConvLibc.cMB2WX(szScratch);
 332                             APPEND_STR(tmp);
 333                         }
 334
 335                         done = TRUE;
 336                         break;
 337
 338                     case wxT('p'):
 339                         {
 340                             void *val = va_arg(argptr, void *);
 341                             CHECK_PREC
 342                                 s_szFlags[flagofs++] = format[n];
 343                             s_szFlags[flagofs] = '\0';
 344                             ::sprintf(szScratch, s_szFlags, val);
 345
 346                             const wxMB2WXbuf tmp =
 347                                 wxConvLibc.cMB2WX(szScratch);
 348                             APPEND_STR(tmp);
 349
 350                             done = TRUE;
 351                         }
 352                         break;
 353
 354                     case wxT('c'):
 355                         {
 356                             wxChar val = va_arg(argptr, int);
 357                             // we don't need to honor padding here, do we?
 358                             APPEND_CH(val);
 359
 360                             done = TRUE;
 361                         }
 362                         break;
 363
 364                     case wxT('s'):
 365                         if (ilen == -1) {
 366                             // wx extension: we'll let %hs mean non-Unicode strings
 367                             char *val = va_arg(argptr, char *);
 368 #if wxUSE_UNICODE
 369                             // ASCII->Unicode constructor handles max_width right
 370                             wxString s(val, wxConvLibc, max_width);
 371 #else
 372                             size_t len = wxSTRING_MAXLEN;
 373                             if (val) {
 374                                 for (len = 0; val[len] && (len<max_width); len++);
 375                             } else val = wxT("(null)");
 376                             wxString s(val, len);
 377 #endif
 378                             if (s.Len() < min_width)
 379                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 380
 381                             APPEND_STR(s);
 382                         } else {
 383                             wxChar *val = va_arg(argptr, wxChar *);
 384                             size_t len = wxSTRING_MAXLEN;
 385                             if (val) {
 386                                 for (len = 0; val[len] && (len<max_width); len++);
 387                             } else val = wxT("(null)");
 388                             wxString s(val, len);
 389                             if (s.Len() < min_width)
 390                                 s.Pad(min_width - s.Len(), wxT(' '), adj_left);
 391
 392                             APPEND_STR(s);
 393                         }
 394                         done = TRUE;
 395                         break;
 396
 397                     case wxT('n'):
 398                         if (ilen == 0) {
 399                             int *val = va_arg(argptr, int *);
 400                             *val = lenCur;
 401                         }
 402                         else if (ilen == -1) {
 403                             short int *val = va_arg(argptr, short int *);
 404                             *val = lenCur;
 405                         }
 406                         else if (ilen >= 1) {
 407                             long int *val = va_arg(argptr, long int *);
 408                             *val = lenCur;
 409                         }
 410                         done = TRUE;
 411                         break;
 412
 413                     default:
 414                         if (wxIsalpha(format[n]))
 415                             // probably some flag not taken care of here yet
 416                             s_szFlags[flagofs++] = format[n];
 417                         else {
 418                             // bad format
 419                             APPEND_CH(_T('%')); // just to pass the glibc tst-printf.c
 420                             n--;
 421                             done = TRUE;
 422                         }
 423                         break;
 424                 }
 425             } while (!done);
 426         }
 427         else
 428         {
 429             APPEND_CH(format[n]);
 430         }
 431     }
 432
 433     return lenCur;
 434 }
 435
 436 #undef APPEND_CH
 437 #undef APPEND_STR
 438 #undef CHECK_PREC
 439
 440 #endif // !wxVsnprintfA
 441
 442 #if !defined(wxSnprintf_)
 443 int WXDLLEXPORT wxSnprintf_(wxChar *buf, size_t len, const wxChar *format, ...)
 444 {
 445     va_list argptr;
 446     va_start(argptr, format);
 447
 448     int iLen = wxVsnprintf_(buf, len, format, argptr);
 449
 450     va_end(argptr);
 451
 452     return iLen;
 453 }
 454 #endif // wxSnprintf_
 455
 456 // ----------------------------------------------------------------------------
 457 // implement the standard IO functions for wide char if libc doesn't have them
 458 // ----------------------------------------------------------------------------
 459
 460 #ifdef wxNEED_FPUTWC
 461
 462 int wxFputs(const wchar_t *ws, FILE *stream)
 463 {
 464     // counting the number of wide characters written isn't worth the trouble,
 465     // simply distinguish between ok and error
 466     return fputs(wxConvLibc.cWC2MB(ws), stream) == -1 ? -1 : 0;
 467 }
 468
 469 int /* not wint_t */ wxPutc(wchar_t wc, FILE *stream)
 470 {
 471     wchar_t ws[2] = { wc, L'\0' };
 472
 473     return wxFputs(ws, stream);
 474 }
 475
 476 #endif // wxNEED_FPUTWC
 477
 478 // NB: we only implement va_list functions here, the ones taking ... are
 479 //     defined below for wxNEED_PRINTF_CONVERSION case anyhow and we reuse
 480 //     the definitions there to avoid duplicating them here
 481 #ifdef wxNEED_WPRINTF
 482
 483 // TODO: implement the scanf() functions
 484 int vwscanf(const wchar_t *format, va_list argptr)
 485 {
 486     wxFAIL_MSG( _T("TODO") );
 487
 488     return -1;
 489 }
 490
 491 int vswscanf(const wchar_t *ws, const wchar_t *format, va_list argptr)
 492 {
 493     wxFAIL_MSG( _T("TODO") );
 494
 495     return -1;
 496 }
 497
 498 int vfwscanf(FILE *stream, const wchar_t *format, va_list argptr)
 499 {
 500     wxFAIL_MSG( _T("TODO") );
 501
 502     return -1;
 503 }
 504
 505 #define vswprintf wxVsnprintf_
 506
 507 int vfwprintf(FILE *stream, const wchar_t *format, va_list argptr)
 508 {
 509     wxString s;
 510     int rc = s.PrintfV(format, argptr);
 511
 512     if ( rc != -1 )
 513     {
 514         // we can't do much better without Unicode support in libc...
 515         if ( fprintf(stream, s.mb_str()) == -1 )
 516             return -1;
 517     }
 518
 519     return rc;
 520 }
 521
 522 int vwprintf(const wchar_t *format, va_list argptr)
 523 {
 524     return wxVfprintf(stdout, format, argptr);
 525 }
 526
 527 #endif // wxNEED_WPRINTF
 528
 529 #ifdef wxNEED_PRINTF_CONVERSION
 530
 531 // ----------------------------------------------------------------------------
 532 // wxFormatConverter: class doing the "%s" -> "%ls" conversion
 533 // ----------------------------------------------------------------------------
 534
 535 /*
 536    Here are the gory details. We want to follow the Windows/MS conventions,
 537    that is to have
 538
 539    In ANSI mode:
 540
 541    format specifier         results in
 542    -----------------------------------
 543    %c, %hc, %hC             char
 544    %lc, %C, %lC             wchar_t
 545
 546    In Unicode mode:
 547
 548    format specifier         results in
 549    -----------------------------------
 550    %hc, %C, %hC             char
 551    %c, %lc, %lC             wchar_t
 552
 553
 554    while on POSIX systems we have %C identical to %lc and %c always means char
 555    (in any mode) while %lc always means wchar_t,
 556
 557    So to use native functions in order to get our semantics we must do the
 558    following translations in Unicode mode (nothing to do in ANSI mode):
 559
 560    wxWindows specifier      POSIX specifier
 561    ----------------------------------------
 562
 563    %hc, %C, %hC             %c
 564    %c                       %lc
 565
 566
 567    And, of course, the same should be done for %s as well.
 568 */
 569
 570 class wxFormatConverter
 571 {
 572 public:
 573     wxFormatConverter(const wxChar *format);
 574
 575     // notice that we only translated the string if m_fmtOrig == NULL (as set
 576     // by CopyAllBefore()), otherwise we should simply use the original format
 577     operator const wxChar *() const
 578         { return m_fmtOrig ? m_fmtOrig : m_fmt.c_str(); }
 579
 580 private:
 581     // copy another character to the translated format: this function does the
 582     // copy if we are translating but doesn't do anything at all if we don't,
 583     // so we don't create the translated format string at all unless we really
 584     // need to (i.e. InsertFmtChar() is called)
 585     wxChar CopyFmtChar(wxChar ch)
 586     {
 587         if ( !m_fmtOrig )
 588         {
 589             // we're translating, do copy
 590             m_fmt += ch;
 591         }
 592         else
 593         {
 594             // simply increase the count which should be copied by
 595             // CopyAllBefore() later if needed
 596             m_nCopied++;
 597         }
 598
 599         return ch;
 600     }
 601
 602     // insert an extra character
 603     void InsertFmtChar(wxChar ch)
 604     {
 605         if ( m_fmtOrig )
 606         {
 607             // so far we haven't translated anything yet
 608             CopyAllBefore();
 609         }
 610
 611         m_fmt += ch;
 612     }
 613
 614     void CopyAllBefore()
 615     {
 616         wxASSERT_MSG( m_fmtOrig && m_fmt.empty(), _T("logic error") );
 617
 618         m_fmt = wxString(m_fmtOrig, m_nCopied);
 619
 620         // we won't need it any longer
 621         m_fmtOrig = NULL;
 622     }
 623
 624     static bool IsFlagChar(wxChar ch)
 625     {
 626         return ch == _T('-') || ch == _T('+') ||
 627                ch == _T('0') || ch == _T(' ') || ch == _T('#');
 628     }
 629
 630     void SkipDigits(const wxChar **ppc)
 631     {
 632         while ( **ppc >= _T('0') && **ppc <= _T('9') )
 633             CopyFmtChar(*(*ppc)++);
 634     }
 635
 636     // the translated format
 637     wxString m_fmt;
 638
 639     // the original format
 640     const wxChar *m_fmtOrig;
 641
 642     // the number of characters already copied
 643     size_t m_nCopied;
 644 };
 645
 646 wxFormatConverter::wxFormatConverter(const wxChar *format)
 647 {
 648     m_fmtOrig = format;
 649     m_nCopied = 0;
 650
 651     while ( *format )
 652     {
 653         if ( CopyFmtChar(*format++) == _T('%') )
 654         {
 655             // skip any flags
 656             while ( IsFlagChar(*format) )
 657                 CopyFmtChar(*format++);
 658
 659             // and possible width
 660             if ( *format == _T('*') )
 661                 CopyFmtChar(*format++);
 662             else
 663                 SkipDigits(&format);
 664
 665             // precision?
 666             if ( *format == _T('.') )
 667             {
 668                 SkipDigits(&format);
 669             }
 670
 671             // next we can have a size modifier
 672             enum
 673             {
 674                 Default,
 675                 Short,
 676                 Long
 677             } size;
 678
 679             switch ( *format )
 680             {
 681                 case _T('h'):
 682                     size = Short;
 683                     format++;
 684                     break;
 685
 686                 case _T('l'):
 687                     // "ll" has a different meaning!
 688                     if ( format[1] != _T('l') )
 689                     {
 690                         size = Long;
 691                         format++;
 692                         break;
 693                     }
 694                     //else: fall through
 695
 696                 default:
 697                     size = Default;
 698             }
 699
 700             // and finally we should have the type
 701             switch ( *format )
 702             {
 703                 case _T('C'):
 704                 case _T('S'):
 705                     // %C and %hC -> %c and %lC -> %lc
 706                     if ( size == Long )
 707                         CopyFmtChar(_T('l'));
 708
 709                     InsertFmtChar(*format++ == _T('C') ? _T('c') : _T('s'));
 710                     break;
 711
 712                 case _T('c'):
 713                 case _T('s'):
 714                     // %c -> %lc but %hc stays %hc and %lc is still %lc
 715                     switch ( size )
 716                     {
 717                         case Default:
 718                             InsertFmtChar(_T('l'));
 719                             break;
 720
 721                         case Short:
 722                             CopyFmtChar(_T('h'));
 723                             break;
 724
 725                         case Long:
 726                             ;
 727                     }
 728                     // fall through
 729
 730                 default:
 731                     // nothing special to do
 732                     CopyFmtChar(*format++);
 733             }
 734         }
 735     }
 736 }
 737
 738 #else // !wxNEED_PRINTF_CONVERSION
 739     // no conversion necessary
 740     #define wxFormatConverter(x) (x)
 741 #endif // wxNEED_PRINTF_CONVERSION/!wxNEED_PRINTF_CONVERSION
 742
 743 // ----------------------------------------------------------------------------
 744 // wxPrintf(), wxScanf() and relatives
 745 // ----------------------------------------------------------------------------
 746
 747 #if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
 748
 749 int wxScanf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_2
 750 {
 751     va_list argptr;
 752     va_start(argptr, format);
 753
 754     int ret = vwscanf(wxFormatConverter(format), argptr );
 755
 756     va_end(argptr);
 757
 758     return ret;
 759 }
 760
 761 int wxSscanf( const wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 762 {
 763     va_list argptr;
 764     va_start(argptr, format);
 765
 766     int ret = vswscanf( str, wxFormatConverter(format), argptr );
 767
 768     va_end(argptr);
 769
 770     return ret;
 771 }
 772
 773 int wxFscanf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 774 {
 775     va_list argptr;
 776     va_start(argptr, format);
 777
 778     int ret = vfwscanf(stream, wxFormatConverter(format), argptr);
 779
 780     va_end(argptr);
 781
 782     return ret;
 783 }
 784
 785 int wxPrintf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_2
 786 {
 787     va_list argptr;
 788     va_start(argptr, format);
 789
 790     int ret = vwprintf( wxFormatConverter(format), argptr );
 791
 792     va_end(argptr);
 793
 794     return ret;
 795 }
 796
 797 #ifndef wxSnprintf
 798 int wxSnprintf( wxChar *str, size_t size, const wxChar *format, ... ) ATTRIBUTE_PRINTF_4
 799 {
 800     va_list argptr;
 801     va_start(argptr, format);
 802
 803     int ret = vswprintf( str, size, wxFormatConverter(format), argptr );
 804
 805     va_end(argptr);
 806
 807     return ret;
 808 }
 809 #endif // wxSnprintf
 810
 811 int wxSprintf( wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 812 {
 813     va_list argptr;
 814     va_start(argptr, format);
 815
 816     // callers of wxSprintf() deserve what they get
 817     int ret = vswprintf( str, UINT_MAX, wxFormatConverter(format), argptr );
 818
 819     va_end(argptr);
 820
 821     return ret;
 822 }
 823
 824 int wxFprintf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3
 825 {
 826     va_list argptr;
 827     va_start( argptr, format );
 828
 829     int ret = vfwprintf( stream, wxFormatConverter(format), argptr );
 830
 831     va_end(argptr);
 832
 833     return ret;
 834 }
 835
 836 int wxVsscanf( const wxChar *str, const wxChar *format, va_list argptr )
 837 {
 838     return vswscanf( str, wxFormatConverter(format), argptr );
 839 }
 840
 841 int wxVfprintf( FILE *stream, const wxChar *format, va_list argptr )
 842 {
 843     return vfwprintf( stream, wxFormatConverter(format), argptr );
 844 }
 845
 846 int wxVprintf( const wxChar *format, va_list argptr )
 847 {
 848     return vwprintf( wxFormatConverter(format), argptr );
 849 }
 850
 851 #ifndef wxVsnprintf
 852 int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list argptr )
 853 {
 854     return vswprintf( str, size, wxFormatConverter(format), argptr );
 855 }
 856 #endif // wxVsnprintf
 857
 858 int wxVsprintf( wxChar *str, const wxChar *format, va_list argptr )
 859 {
 860     // same as for wxSprintf()
 861     return vswprintf(str, UINT_MAX, wxFormatConverter(format), argptr);
 862 }
 863
 864 #endif // wxNEED_PRINTF_CONVERSION
 865
 866 // ----------------------------------------------------------------------------
 867 // ctype.h stuff (currently unused)
 868 // ----------------------------------------------------------------------------
 869
 870 #if defined(__WIN32__) && defined(wxNEED_WX_CTYPE_H)
 871 inline WORD wxMSW_ctype(wxChar ch)
 872 {
 873   WORD ret;
 874   GetStringTypeEx(LOCALE_USER_DEFAULT, CT_CTYPE1, &ch, 1, &ret);
 875   return ret;
 876 }
 877
 878 WXDLLEXPORT int wxIsalnum(wxChar ch) { return IsCharAlphaNumeric(ch); }
 879 WXDLLEXPORT int wxIsalpha(wxChar ch) { return IsCharAlpha(ch); }
 880 WXDLLEXPORT int wxIsctrl(wxChar ch) { return wxMSW_ctype(ch) & C1_CNTRL; }
 881 WXDLLEXPORT int wxIsdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_DIGIT; }
 882 WXDLLEXPORT int wxIsgraph(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_PUNCT|C1_ALPHA); }
 883 WXDLLEXPORT int wxIslower(wxChar ch) { return IsCharLower(ch); }
 884 WXDLLEXPORT int wxIsprint(wxChar ch) { return wxMSW_ctype(ch) & (C1_DIGIT|C1_SPACE|C1_PUNCT|C1_ALPHA); }
 885 WXDLLEXPORT int wxIspunct(wxChar ch) { return wxMSW_ctype(ch) & C1_PUNCT; }
 886 WXDLLEXPORT int wxIsspace(wxChar ch) { return wxMSW_ctype(ch) & C1_SPACE; }
 887 WXDLLEXPORT int wxIsupper(wxChar ch) { return IsCharUpper(ch); }
 888 WXDLLEXPORT int wxIsxdigit(wxChar ch) { return wxMSW_ctype(ch) & C1_XDIGIT; }
 889 WXDLLEXPORT int wxTolower(wxChar ch) { return (wxChar)CharLower((LPTSTR)(ch)); }
 890 WXDLLEXPORT int wxToupper(wxChar ch) { return (wxChar)CharUpper((LPTSTR)(ch)); }
 891 #endif
 892
 893 #ifndef wxStrdup
 894 WXDLLEXPORT wxChar * wxStrdup(const wxChar *psz)
 895 {
 896   size_t size = (wxStrlen(psz) + 1) * sizeof(wxChar);
 897   wxChar *ret = (wxChar *) malloc(size);
 898   memcpy(ret, psz, size);
 899   return ret;
 900 }
 901 #endif
 902
 903 #ifndef wxStricmp
 904 int WXDLLEXPORT wxStricmp(const wxChar *psz1, const wxChar *psz2)
 905 {
 906   register wxChar c1, c2;
 907   do {
 908     c1 = wxTolower(*psz1++);
 909     c2 = wxTolower(*psz2++);
 910   } while ( c1 && (c1 == c2) );
 911   return c1 - c2;
 912 }
 913 #endif
 914
 915 #ifndef wxStricmp
 916 int WXDLLEXPORT wxStrnicmp(const wxChar *s1, const wxChar *s2, size_t n)
 917 {
 918   register wxChar c1, c2;
 919   while (n && ((c1 = wxTolower(*s1)) == (c2 = wxTolower(*s2)) ) && c1) n--, s1++, s2++;
 920   if (n) {
 921     if (c1 < c2) return -1;
 922     if (c1 > c2) return 1;
 923   }
 924   return 0;
 925 }
 926 #endif
 927
 928 #ifndef wxStrtok
 929 WXDLLEXPORT wxChar * wxStrtok(wxChar *psz, const wxChar *delim, wxChar **save_ptr)
 930 {
 931     if (!psz)
 932     {
 933         psz = *save_ptr;
 934         if ( !psz )
 935             return NULL;
 936     }
 937
 938     psz += wxStrspn(psz, delim);
 939     if (!*psz)
 940     {
 941         *save_ptr = (wxChar *)NULL;
 942         return (wxChar *)NULL;
 943     }
 944
 945     wxChar *ret = psz;
 946     psz = wxStrpbrk(psz, delim);
 947     if (!psz)
 948     {
 949         *save_ptr = (wxChar*)NULL;
 950     }
 951     else
 952     {
 953         *psz = wxT('\0');
 954         *save_ptr = psz + 1;
 955     }
 956
 957     return ret;
 958 }
 959 #endif // wxStrtok
 960
 961 #ifndef wxSetlocale
 962 WXDLLEXPORT wxWCharBuffer wxSetlocale(int category, const wxChar *locale)
 963 {
 964     char *localeOld = setlocale(category, wxConvLocal.cWX2MB(locale));
 965
 966     return wxWCharBuffer(wxConvLocal.cMB2WC(localeOld));
 967 }
 968 #endif
 969
 970 // ----------------------------------------------------------------------------
 971 // string.h functions
 972 // ----------------------------------------------------------------------------
 973
 974 #ifdef wxNEED_WX_STRING_H
 975 WXDLLEXPORT wxChar * wxStrcat(wxChar *dest, const wxChar *src)
 976 {
 977   wxChar *ret = dest;
 978   while (*dest) dest++;
 979   while ((*dest++ = *src++));
 980   return ret;
 981 }
 982
 983 WXDLLEXPORT const wxChar * wxStrchr(const wxChar *s, wxChar c)
 984 {
 985     // be careful here as the terminating NUL makes part of the string
 986     while ( *s != c )
 987     {
 988         if ( !*s++ )
 989             return NULL;
 990     }
 991
 992     return s;
 993 }
 994
 995 WXDLLEXPORT int wxStrcmp(const wxChar *s1, const wxChar *s2)
 996 {
 997   while ((*s1 == *s2) && *s1) s1++, s2++;
 998   if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
 999   if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1000   return 0;
1001 }
1002
1003 WXDLLEXPORT wxChar * wxStrcpy(wxChar *dest, const wxChar *src)
1004 {
1005   wxChar *ret = dest;
1006   while ((*dest++ = *src++));
1007   return ret;
1008 }
1009
1010 WXDLLEXPORT wxChar * wxStrncat(wxChar *dest, const wxChar *src, size_t n)
1011 {
1012   wxChar *ret = dest;
1013   while (*dest) dest++;
1014   while (n && (*dest++ = *src++)) n--;
1015   return ret;
1016 }
1017
1018 WXDLLEXPORT int wxStrncmp(const wxChar *s1, const wxChar *s2, size_t n)
1019 {
1020   while (n && (*s1 == *s2) && *s1) n--, s1++, s2++;
1021   if (n) {
1022     if ((wxUChar)*s1 < (wxUChar)*s2) return -1;
1023     if ((wxUChar)*s1 > (wxUChar)*s2) return 1;
1024   }
1025   return 0;
1026 }
1027
1028 WXDLLEXPORT wxChar * wxStrncpy(wxChar *dest, const wxChar *src, size_t n)
1029 {
1030   wxChar *ret = dest;
1031   while (n && (*dest++ = *src++)) n--;
1032   while (n) *dest++=0, n--; // the docs specify padding with zeroes
1033   return ret;
1034 }
1035
1036 WXDLLEXPORT const wxChar * wxStrpbrk(const wxChar *s, const wxChar *accept)
1037 {
1038   while (*s && !wxStrchr(accept, *s))
1039       s++;
1040
1041   return *s ? s : NULL;
1042 }
1043
1044 WXDLLEXPORT const wxChar * wxStrrchr(const wxChar *s, wxChar c)
1045 {
1046     const wxChar *ret = NULL;
1047     do
1048     {
1049         if ( *s == c )
1050             ret = s;
1051         s++;
1052     }
1053     while ( *s );
1054
1055     return ret;
1056 }
1057
1058 WXDLLEXPORT size_t wxStrspn(const wxChar *s, const wxChar *accept)
1059 {
1060   size_t len = 0;
1061   while (wxStrchr(accept, *s++)) len++;
1062   return len;
1063 }
1064
1065 WXDLLEXPORT const wxChar *wxStrstr(const wxChar *haystack, const wxChar *needle)
1066 {
1067     wxCHECK_RET( needle, NULL, _T("NULL argument in wxStrstr") );
1068
1069     // VZ: this is not exactly the most efficient string search algorithm...
1070
1071     const size_t len = wxStrlen(needle);
1072
1073     while ( const wxChar *fnd = wxStrchr(haystack, *needle) )
1074     {
1075         if ( !wxStrncmp(fnd, needle, len) )
1076             return fnd;
1077
1078         haystack = fnd + 1;
1079     }
1080
1081     return NULL;
1082 }
1083
1084 WXDLLEXPORT double wxStrtod(const wxChar *nptr, wxChar **endptr)
1085 {
1086   const wxChar *start = nptr;
1087
1088   // FIXME: only correct for C locale
1089   while (wxIsspace(*nptr)) nptr++;
1090   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1091   while (wxIsdigit(*nptr)) nptr++;
1092   if (*nptr == wxT('.')) {
1093     nptr++;
1094     while (wxIsdigit(*nptr)) nptr++;
1095   }
1096   if (*nptr == wxT('E') || *nptr == wxT('e')) {
1097     nptr++;
1098     if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1099     while (wxIsdigit(*nptr)) nptr++;
1100   }
1101
1102   wxString data(nptr, nptr-start);
1103   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1104   char *rdat = wxMBSTRINGCAST dat;
1105   double ret = strtod(dat, &rdat);
1106
1107   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1108
1109   return ret;
1110 }
1111
1112 WXDLLEXPORT long int wxStrtol(const wxChar *nptr, wxChar **endptr, int base)
1113 {
1114   const wxChar *start = nptr;
1115
1116   // FIXME: only correct for C locale
1117   while (wxIsspace(*nptr)) nptr++;
1118   if (*nptr == wxT('+') || *nptr == wxT('-')) nptr++;
1119   if (((base == 0) || (base == 16)) &&
1120       (nptr[0] == wxT('0') && nptr[1] == wxT('x'))) {
1121     nptr += 2;
1122     base = 16;
1123   }
1124   else if ((base == 0) && (nptr[0] == wxT('0'))) base = 8;
1125   else if (base == 0) base = 10;
1126
1127   while ((wxIsdigit(*nptr) && (*nptr - wxT('0') < base)) ||
1128          (wxIsalpha(*nptr) && (wxToupper(*nptr) - wxT('A') + 10 < base))) nptr++;
1129
1130   wxString data(nptr, nptr-start);
1131   wxWX2MBbuf dat = data.mb_str(wxConvLocal);
1132   char *rdat = wxMBSTRINGCAST dat;
1133   long int ret = strtol(dat, &rdat, base);
1134
1135   if (endptr) *endptr = (wxChar *)(start + (rdat - (const char *)dat));
1136
1137   return ret;
1138 }
1139 #endif // wxNEED_WX_STRING_H
1140
1141 #ifdef wxNEED_WX_STDIO_H
1142 WXDLLEXPORT FILE * wxFopen(const wxChar *path, const wxChar *mode)
1143 {
1144     char mode_buffer[10];
1145     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1146        mode_buffer[i] = (char) mode[i];
1147
1148     return fopen( wxConvFile.cWX2MB(path), mode_buffer );
1149 }
1150
1151 WXDLLEXPORT FILE * wxFreopen(const wxChar *path, const wxChar *mode, FILE *stream)
1152 {
1153     char mode_buffer[10];
1154     for (size_t i = 0; i < wxStrlen(mode)+1; i++)
1155        mode_buffer[i] = (char) mode[i];
1156
1157     return freopen( wxConvFile.cWX2MB(path), mode_buffer, stream );
1158 }
1159
1160 WXDLLEXPORT int wxRemove(const wxChar *path)
1161 {
1162     return remove( wxConvFile.cWX2MB(path) );
1163 }
1164
1165 WXDLLEXPORT int wxRename(const wxChar *oldpath, const wxChar *newpath)
1166 {
1167     return rename( wxConvFile.cWX2MB(oldpath), wxConvFile.cWX2MB(newpath) );
1168 }
1169 #endif
1170
1171 #ifndef wxAtof
1172 double   WXDLLEXPORT wxAtof(const wxChar *psz)
1173 {
1174   return atof(wxConvLocal.cWX2MB(psz));
1175 }
1176 #endif
1177
1178 #ifdef wxNEED_WX_STDLIB_H
1179 int      WXDLLEXPORT wxAtoi(const wxChar *psz)
1180 {
1181   return atoi(wxConvLocal.cWX2MB(psz));
1182 }
1183
1184 long     WXDLLEXPORT wxAtol(const wxChar *psz)
1185 {
1186   return atol(wxConvLocal.cWX2MB(psz));
1187 }
1188
1189 wxChar * WXDLLEXPORT wxGetenv(const wxChar *name)
1190 {
1191   static wxHashTable env;
1192
1193   // check if we already have stored the converted env var
1194   wxObject *data = env.Get(name);
1195   if (!data)
1196   {
1197     // nope, retrieve it,
1198 #if wxUSE_UNICODE
1199     wxCharBuffer buffer = wxConvLocal.cWX2MB(name);
1200     // printf( "buffer %s\n", (const char*) buffer );
1201     const char *val = getenv( (const char *)buffer );
1202 #else
1203     const char *val = getenv( name );
1204 #endif
1205
1206     if (!val) return (wxChar *)NULL;
1207     // printf( "home %s\n", val );
1208
1209     // convert it,
1210 #ifdef wxUSE_UNICODE
1211     data = (wxObject *)new wxString(val, wxConvLocal);
1212 #else
1213     data = (wxObject *)new wxString(val);
1214 #endif
1215
1216     // and store it
1217     env.Put(name, data);
1218   }
1219   // return converted env var
1220   return (wxChar *)((wxString *)data)->c_str();
1221 }
1222
1223 int WXDLLEXPORT wxSystem(const wxChar *psz)
1224 {
1225     return system(wxConvLocal.cWX2MB(psz));
1226 }
1227
1228 #endif
1229
1230 #ifdef wxNEED_WX_TIME_H
1231 WXDLLEXPORT size_t   wxStrftime(wxChar *s, size_t max, const wxChar *fmt, const struct tm *tm)
1232 {
1233     if (!max) return 0;
1234
1235     char *buf = (char *)malloc(max);
1236     size_t ret = strftime(buf, max, wxConvLocal.cWX2MB(fmt), tm);
1237     if (ret)
1238     {
1239         wxStrcpy(s, wxConvLocal.cMB2WX(buf));
1240         free(buf);
1241         return wxStrlen(s);
1242     }
1243     else
1244     {
1245         free(buf);
1246         *s = 0;
1247         return 0;
1248   }
1249 }
1250 #endif