src/common/filefn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/filefn.cpp
   3 // Purpose:     File- and directory-related functions
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  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 #ifndef WX_PRECOMP
  28     #include "wx/intl.h"
  29     #include "wx/log.h"
  30     #include "wx/utils.h"
  31 #endif
  32
  33 #include "wx/file.h" // This does include filefn.h
  34 #include "wx/filename.h"
  35 #include "wx/dir.h"
  36
  37 // there are just too many of those...
  38 #ifdef __VISUALC__
  39     #pragma warning(disable:4706)   // assignment within conditional expression
  40 #endif // VC++
  41
  42 #include <ctype.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #if !wxONLY_WATCOM_EARLIER_THAN(1,4)
  47     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  48         #include <errno.h>
  49     #endif
  50 #endif
  51
  52 #if defined(__WXMAC__)
  53     #include  "wx/mac/private.h"  // includes mac headers
  54 #endif
  55
  56 #ifdef __WINDOWS__
  57     #include "wx/msw/private.h"
  58     #include "wx/msw/mslu.h"
  59
  60     // sys/cygwin.h is needed for cygwin_conv_to_full_win32_path()
  61     //
  62     // note that it must be included after <windows.h>
  63     #ifdef __GNUWIN32__
  64         #ifdef __CYGWIN__
  65             #include <sys/cygwin.h>
  66         #endif
  67     #endif // __GNUWIN32__
  68
  69     // io.h is needed for _get_osfhandle()
  70     // Already included by filefn.h for many Windows compilers
  71     #if defined __MWERKS__ || defined __CYGWIN__
  72         #include <io.h>
  73     #endif
  74 #endif // __WINDOWS__
  75
  76 #if defined(__VMS__)
  77     #include <fab.h>
  78 #endif
  79
  80 // TODO: Borland probably has _wgetcwd as well?
  81 #ifdef _MSC_VER
  82     #define HAVE_WGETCWD
  83 #endif
  84
  85 // ----------------------------------------------------------------------------
  86 // constants
  87 // ----------------------------------------------------------------------------
  88
  89 #ifndef _MAXPATHLEN
  90     #define _MAXPATHLEN 1024
  91 #endif
  92
  93 #ifdef __WXMAC__
  94 #    include "MoreFilesX.h"
  95 #endif
  96
  97 // ----------------------------------------------------------------------------
  98 // private globals
  99 // ----------------------------------------------------------------------------
 100
 101 // MT-FIXME: get rid of this horror and all code using it
 102 static wxChar wxFileFunctionsBuffer[4*_MAXPATHLEN];
 103
 104 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 105 //
 106 // VisualAge C++ V4.0 cannot have any external linkage const decs
 107 // in headers included by more than one primary source
 108 //
 109 const int wxInvalidOffset = -1;
 110 #endif
 111
 112 // ----------------------------------------------------------------------------
 113 // macros
 114 // ----------------------------------------------------------------------------
 115
 116 // we need to translate Mac filenames before passing them to OS functions
 117 #define OS_FILENAME(s) (s.fn_str())
 118
 119 // ============================================================================
 120 // implementation
 121 // ============================================================================
 122
 123 #ifdef wxNEED_WX_UNISTD_H
 124
 125 WXDLLEXPORT int wxStat( const wxChar *file_name, wxStructStat *buf )
 126 {
 127     return stat( wxConvFile.cWX2MB( file_name ), buf );
 128 }
 129
 130 WXDLLEXPORT int wxAccess( const wxChar *pathname, int mode )
 131 {
 132     return access( wxConvFile.cWX2MB( pathname ), mode );
 133 }
 134
 135 WXDLLEXPORT int wxOpen( const wxChar *pathname, int flags, mode_t mode )
 136 {
 137     return open( wxConvFile.cWX2MB( pathname ), flags, mode );
 138 }
 139
 140 #endif
 141    // wxNEED_WX_UNISTD_H
 142
 143 // ----------------------------------------------------------------------------
 144 // wxPathList
 145 // ----------------------------------------------------------------------------
 146
 147 // IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
 148
 149 static inline wxChar* MYcopystring(const wxString& s)
 150 {
 151     wxChar* copy = new wxChar[s.length() + 1];
 152     return wxStrcpy(copy, s.c_str());
 153 }
 154
 155 static inline wxChar* MYcopystring(const wxChar* s)
 156 {
 157     wxChar* copy = new wxChar[wxStrlen(s) + 1];
 158     return wxStrcpy(copy, s);
 159 }
 160
 161 void wxPathList::Add (const wxString& path)
 162 {
 163     wxStringList::Add (WXSTRINGCAST path);
 164 }
 165
 166 // Add paths e.g. from the PATH environment variable
 167 void wxPathList::AddEnvList (const wxString& WXUNUSED_IN_WINCE(envVariable))
 168 {
 169     // No environment variables on WinCE
 170 #ifndef __WXWINCE__
 171     static const wxChar PATH_TOKS[] =
 172 #if defined(__WINDOWS__) || defined(__OS2__)
 173         /*
 174         The space has been removed from the tokenizers, otherwise a
 175         path such as "C:\Program Files" would be split into 2 paths:
 176         "C:\Program" and "Files"
 177         */
 178 //        wxT(" ;"); // Don't separate with colon in DOS (used for drive)
 179         wxT(";"); // Don't separate with colon in DOS (used for drive)
 180 #else
 181         wxT(" :;");
 182 #endif
 183
 184     wxString val ;
 185     if (wxGetEnv (WXSTRINGCAST envVariable, &val))
 186     {
 187         wxChar *s = MYcopystring (val);
 188         wxChar *save_ptr, *token = wxStrtok (s, PATH_TOKS, &save_ptr);
 189
 190         if (token)
 191         {
 192             Add(token);
 193             while (token)
 194             {
 195                 if ( (token = wxStrtok ((wxChar *) NULL, PATH_TOKS, &save_ptr))
 196                     != NULL )
 197                 {
 198                     Add(token);
 199                 }
 200             }
 201         }
 202
 203         // suppress warning about unused variable save_ptr when wxStrtok() is a
 204         // macro which throws away its third argument
 205         save_ptr = token;
 206
 207         delete [] s;
 208     }
 209 #endif // !__WXWINCE__
 210 }
 211
 212 // Given a full filename (with path), ensure that that file can
 213 // be accessed again USING FILENAME ONLY by adding the path
 214 // to the list if not already there.
 215 void wxPathList::EnsureFileAccessible (const wxString& path)
 216 {
 217     wxString path_only(wxPathOnly(path));
 218     if ( !path_only.empty() )
 219     {
 220         if ( !Member(path_only) )
 221             Add(path_only);
 222     }
 223 }
 224
 225 bool wxPathList::Member (const wxString& path)
 226 {
 227   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 228   {
 229       wxString path2( node->GetData() );
 230       if (
 231 #if defined(__WINDOWS__) || defined(__OS2__) || defined(__VMS__) || defined(__WXMAC__)
 232       // Case INDEPENDENT
 233           path.CompareTo (path2, wxString::ignoreCase) == 0
 234 #else
 235       // Case sensitive File System
 236           path.CompareTo (path2) == 0
 237 #endif
 238         )
 239         return true;
 240   }
 241   return false;
 242 }
 243
 244 wxString wxPathList::FindValidPath (const wxString& file)
 245 {
 246   wxExpandPath(wxFileFunctionsBuffer, file);
 247
 248   wxChar buf[_MAXPATHLEN];
 249   wxStrcpy(buf, wxFileFunctionsBuffer);
 250
 251   wxChar *filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 252
 253   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 254     {
 255       const wxString path(node->GetData());
 256       wxStrcpy (wxFileFunctionsBuffer, path);
 257       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 258       if (ch != wxT('\\') && ch != wxT('/'))
 259         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 260       wxStrcat (wxFileFunctionsBuffer, filename);
 261 #ifdef __WINDOWS__
 262       wxUnix2DosFilename (wxFileFunctionsBuffer);
 263 #endif
 264       if (wxFileExists (wxFileFunctionsBuffer))
 265       {
 266         return wxString(wxFileFunctionsBuffer);        // Found!
 267       }
 268     }                                // for()
 269
 270   return wxEmptyString;                    // Not found
 271 }
 272
 273 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 274 {
 275     wxString f = FindValidPath(file);
 276     if ( f.empty() || wxIsAbsolutePath(f) )
 277         return f;
 278
 279     wxString buf = ::wxGetCwd();
 280
 281     if ( !wxEndsWithPathSeparator(buf) )
 282     {
 283         buf += wxFILE_SEP_PATH;
 284     }
 285     buf += f;
 286
 287     return buf;
 288 }
 289
 290 bool
 291 wxFileExists (const wxString& filename)
 292 {
 293 #if defined(__WXPALMOS__)
 294     return false;
 295 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 296     // we must use GetFileAttributes() instead of the ANSI C functions because
 297     // it can cope with network (UNC) paths unlike them
 298     DWORD ret = ::GetFileAttributes(filename);
 299
 300     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 301 #else // !__WIN32__
 302     wxStructStat st;
 303 #ifndef wxNEED_WX_UNISTD_H
 304     return (wxStat( filename.fn_str() , &st) == 0 && (st.st_mode & S_IFREG))
 305 #ifdef __OS2__
 306       || (errno == EACCES) // if access is denied something with that name
 307                             // exists and is opened in exclusive mode.
 308 #endif
 309       ;
 310 #else
 311     return wxStat( filename , &st) == 0 && (st.st_mode & S_IFREG);
 312 #endif
 313 #endif // __WIN32__/!__WIN32__
 314 }
 315
 316 bool
 317 wxIsAbsolutePath (const wxString& filename)
 318 {
 319     if (!filename.empty())
 320     {
 321 #if defined(__WXMAC__) && !defined(__DARWIN__)
 322         // Classic or Carbon CodeWarrior like
 323         // Carbon with Apple DevTools is Unix like
 324
 325         // This seems wrong to me, but there is no fix. since
 326         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 327         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 328         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 329             return true ;
 330 #else
 331         // Unix like or Windows
 332         if (filename[0] == wxT('/'))
 333             return true;
 334 #endif
 335 #ifdef __VMS__
 336         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 337             return true;
 338 #endif
 339 #if defined(__WINDOWS__) || defined(__OS2__)
 340         // MSDOS like
 341         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 342             return true;
 343 #endif
 344     }
 345     return false ;
 346 }
 347
 348 /*
 349  * Strip off any extension (dot something) from end of file,
 350  * IF one exists. Inserts zero into buffer.
 351  *
 352  */
 353
 354 void wxStripExtension(wxChar *buffer)
 355 {
 356     int len = wxStrlen(buffer);
 357     int i = len-1;
 358     while (i > 0)
 359     {
 360         if (buffer[i] == wxT('.'))
 361         {
 362             buffer[i] = 0;
 363             break;
 364         }
 365         i --;
 366     }
 367 }
 368
 369 void wxStripExtension(wxString& buffer)
 370 {
 371     //RN:  Be careful about the handling the case where
 372     //buffer.length() == 0
 373     for(size_t i = buffer.length() - 1; i != wxString::npos; --i)
 374     {
 375         if (buffer.GetChar(i) == wxT('.'))
 376         {
 377           buffer = buffer.Left(i);
 378           break;
 379         }
 380     }
 381 }
 382
 383 // Destructive removal of /./ and /../ stuff
 384 wxChar *wxRealPath (wxChar *path)
 385 {
 386 #ifdef __WXMSW__
 387   static const wxChar SEP = wxT('\\');
 388   wxUnix2DosFilename(path);
 389 #else
 390   static const wxChar SEP = wxT('/');
 391 #endif
 392   if (path[0] && path[1]) {
 393     /* MATTHEW: special case "/./x" */
 394     wxChar *p;
 395     if (path[2] == SEP && path[1] == wxT('.'))
 396       p = &path[0];
 397     else
 398       p = &path[2];
 399     for (; *p; p++)
 400       {
 401         if (*p == SEP)
 402           {
 403             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 404               {
 405                 wxChar *q;
 406                 for (q = p - 1; q >= path && *q != SEP; q--)
 407                 {
 408                     // Empty
 409                 }
 410
 411                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 412                     && (q - 1 <= path || q[-1] != SEP))
 413                   {
 414                     wxStrcpy (q, p + 3);
 415                     if (path[0] == wxT('\0'))
 416                       {
 417                         path[0] = SEP;
 418                         path[1] = wxT('\0');
 419                       }
 420 #if defined(__WXMSW__) || defined(__OS2__)
 421                     /* Check that path[2] is NULL! */
 422                     else if (path[1] == wxT(':') && !path[2])
 423                       {
 424                         path[2] = SEP;
 425                         path[3] = wxT('\0');
 426                       }
 427 #endif
 428                     p = q - 1;
 429                   }
 430               }
 431             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 432               wxStrcpy (p, p + 2);
 433           }
 434       }
 435   }
 436   return path;
 437 }
 438
 439 wxString wxRealPath(const wxString& path)
 440 {
 441     wxChar *buf1=MYcopystring(path);
 442     wxChar *buf2=wxRealPath(buf1);
 443     wxString buf(buf2);
 444     delete [] buf1;
 445     return buf;
 446 }
 447
 448
 449 // Must be destroyed
 450 wxChar *wxCopyAbsolutePath(const wxString& filename)
 451 {
 452     if (filename.empty())
 453         return (wxChar *) NULL;
 454
 455     if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename)))
 456     {
 457         wxString buf = ::wxGetCwd();
 458         wxChar ch = buf.Last();
 459 #ifdef __WXMSW__
 460         if (ch != wxT('\\') && ch != wxT('/'))
 461             buf << wxT("\\");
 462 #else
 463         if (ch != wxT('/'))
 464             buf << wxT("/");
 465 #endif
 466         buf << wxFileFunctionsBuffer;
 467         buf = wxRealPath( buf );
 468         return MYcopystring( buf );
 469     }
 470     return MYcopystring( wxFileFunctionsBuffer );
 471 }
 472
 473 /*-
 474  Handles:
 475    ~/ => home dir
 476    ~user/ => user's home dir
 477    If the environment variable a = "foo" and b = "bar" then:
 478    Unix:
 479         $a        =>        foo
 480         $a$b        =>        foobar
 481         $a.c        =>        foo.c
 482         xxx$a        =>        xxxfoo
 483         ${a}!        =>        foo!
 484         $(b)!        =>        bar!
 485         \$a        =>        \$a
 486    MSDOS:
 487         $a        ==>        $a
 488         $(a)        ==>        foo
 489         $(a)$b        ==>        foo$b
 490         $(a)$(b)==>        foobar
 491         test.$$        ==>        test.$$
 492  */
 493
 494 /* input name in name, pathname output to buf. */
 495
 496 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 497 {
 498     register wxChar *d, *s, *nm;
 499     wxChar          lnm[_MAXPATHLEN];
 500     int             q;
 501
 502     // Some compilers don't like this line.
 503 //    const wxChar    trimchars[] = wxT("\n \t");
 504
 505     wxChar      trimchars[4];
 506     trimchars[0] = wxT('\n');
 507     trimchars[1] = wxT(' ');
 508     trimchars[2] = wxT('\t');
 509     trimchars[3] = 0;
 510
 511 #ifdef __WXMSW__
 512     const wxChar     SEP = wxT('\\');
 513 #else
 514     const wxChar     SEP = wxT('/');
 515 #endif
 516     buf[0] = wxT('\0');
 517     if (name == NULL || *name == wxT('\0'))
 518         return buf;
 519     nm = MYcopystring(name); // Make a scratch copy
 520     wxChar *nm_tmp = nm;
 521
 522     /* Skip leading whitespace and cr */
 523     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 524         nm++;
 525     /* And strip off trailing whitespace and cr */
 526     s = nm + (q = wxStrlen(nm)) - 1;
 527     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 528         *s = wxT('\0');
 529
 530     s = nm;
 531     d = lnm;
 532 #ifdef __WXMSW__
 533     q = FALSE;
 534 #else
 535     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 536 #endif
 537
 538     /* Expand inline environment variables */
 539 #ifdef __VISAGECPP__
 540     while (*d)
 541     {
 542       *d++ = *s;
 543       if(*s == wxT('\\'))
 544       {
 545         *(d - 1) = *++s;
 546         if (*d)
 547         {
 548           s++;
 549           continue;
 550         }
 551         else
 552            break;
 553       }
 554       else
 555 #else
 556     while ((*d++ = *s) != 0) {
 557 #  ifndef __WXMSW__
 558         if (*s == wxT('\\')) {
 559             if ((*(d - 1) = *++s)!=0) {
 560                 s++;
 561                 continue;
 562             } else
 563                 break;
 564         } else
 565 #  endif
 566 #endif
 567             // No env variables on WinCE
 568 #ifndef __WXWINCE__
 569 #ifdef __WXMSW__
 570         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 571 #else
 572         if (*s++ == wxT('$'))
 573 #endif
 574         {
 575             register wxChar  *start = d;
 576             register int     braces = (*s == wxT('{') || *s == wxT('('));
 577             register wxChar  *value;
 578             while ((*d++ = *s) != 0)
 579                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 580                     break;
 581                 else
 582                     s++;
 583             *--d = 0;
 584             value = wxGetenv(braces ? start + 1 : start);
 585             if (value) {
 586                 for ((d = start - 1); (*d++ = *value++) != 0;)
 587                 {
 588                     // Empty
 589                 }
 590
 591                 d--;
 592                 if (braces && *s)
 593                     s++;
 594             }
 595         }
 596 #endif
 597         // __WXWINCE__
 598     }
 599
 600     /* Expand ~ and ~user */
 601     nm = lnm;
 602     if (nm[0] == wxT('~') && !q)
 603     {
 604         /* prefix ~ */
 605         if (nm[1] == SEP || nm[1] == 0)
 606         {        /* ~/filename */
 607         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 608             if ((s = WXSTRINGCAST wxGetUserHome(wxEmptyString)) != NULL) {
 609                 if (*++nm)
 610                     nm++;
 611             }
 612         } else
 613         {                /* ~user/filename */
 614             register wxChar  *nnm;
 615             register wxChar  *home;
 616             for (s = nm; *s && *s != SEP; s++)
 617             {
 618                 // Empty
 619             }
 620             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 621             was_sep = (*s == SEP);
 622             nnm = *s ? s + 1 : s;
 623             *s = 0;
 624         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 625             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL)
 626             {
 627                 if (was_sep) /* replace only if it was there: */
 628                     *s = SEP;
 629                 s = NULL;
 630             }
 631             else
 632             {
 633                 nm = nnm;
 634                 s = home;
 635             }
 636         }
 637     }
 638
 639     d = buf;
 640     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 641         /* Copy home dir */
 642         while (wxT('\0') != (*d++ = *s++))
 643           /* loop */;
 644         // Handle root home
 645         if (d - 1 > buf && *(d - 2) != SEP)
 646           *(d - 1) = SEP;
 647     }
 648     s = nm;
 649     while ((*d++ = *s++) != 0)
 650     {
 651         // Empty
 652     }
 653     delete[] nm_tmp; // clean up alloc
 654     /* Now clean up the buffer */
 655     return wxRealPath(buf);
 656 }
 657
 658 /* Contract Paths to be build upon an environment variable
 659    component:
 660
 661    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 662
 663    The call wxExpandPath can convert these back!
 664  */
 665 wxChar *
 666 wxContractPath (const wxString& filename,
 667                 const wxString& WXUNUSED_IN_WINCE(envname),
 668                 const wxString& user)
 669 {
 670   static wxChar dest[_MAXPATHLEN];
 671
 672   if (filename.empty())
 673     return (wxChar *) NULL;
 674
 675   wxStrcpy (dest, WXSTRINGCAST filename);
 676 #ifdef __WXMSW__
 677   wxUnix2DosFilename(dest);
 678 #endif
 679
 680   // Handle environment
 681   const wxChar *val;
 682 #ifndef __WXWINCE__
 683   wxChar *tcp;
 684   if (!envname.empty() && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 685      (tcp = wxStrstr (dest, val)) != NULL)
 686     {
 687         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 688         *tcp++ = wxT('$');
 689         *tcp++ = wxT('{');
 690         wxStrcpy (tcp, WXSTRINGCAST envname);
 691         wxStrcat (tcp, wxT("}"));
 692         wxStrcat (tcp, wxFileFunctionsBuffer);
 693     }
 694 #endif
 695
 696   // Handle User's home (ignore root homes!)
 697   val = wxGetUserHome (user);
 698   if (!val)
 699     return dest;
 700
 701   const size_t len = wxStrlen(val);
 702   if (len <= 2)
 703     return dest;
 704
 705   if (wxStrncmp(dest, val, len) == 0)
 706   {
 707     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 708     if (!user.empty())
 709            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 710     wxStrcat(wxFileFunctionsBuffer, dest + len);
 711     wxStrcpy (dest, wxFileFunctionsBuffer);
 712   }
 713
 714   return dest;
 715 }
 716
 717 // Return just the filename, not the path (basename)
 718 wxChar *wxFileNameFromPath (wxChar *path)
 719 {
 720     wxString p = path;
 721     wxString n = wxFileNameFromPath(p);
 722
 723     return path + p.length() - n.length();
 724 }
 725
 726 wxString wxFileNameFromPath (const wxString& path)
 727 {
 728     wxString name, ext;
 729     wxFileName::SplitPath(path, NULL, &name, &ext);
 730
 731     wxString fullname = name;
 732     if ( !ext.empty() )
 733     {
 734         fullname << wxFILE_SEP_EXT << ext;
 735     }
 736
 737     return fullname;
 738 }
 739
 740 // Return just the directory, or NULL if no directory
 741 wxChar *
 742 wxPathOnly (wxChar *path)
 743 {
 744     if (path && *path)
 745     {
 746         static wxChar buf[_MAXPATHLEN];
 747
 748         // Local copy
 749         wxStrcpy (buf, path);
 750
 751         int l = wxStrlen(path);
 752         int i = l - 1;
 753
 754         // Search backward for a backward or forward slash
 755         while (i > -1)
 756         {
 757 #if defined(__WXMAC__) && !defined(__DARWIN__)
 758             // Classic or Carbon CodeWarrior like
 759             // Carbon with Apple DevTools is Unix like
 760             if (path[i] == wxT(':') )
 761             {
 762                 buf[i] = 0;
 763                 return buf;
 764             }
 765 #else
 766             // Unix like or Windows
 767             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 768             {
 769                 buf[i] = 0;
 770                 return buf;
 771             }
 772 #endif
 773 #ifdef __VMS__
 774             if (path[i] == wxT(']'))
 775             {
 776                 buf[i+1] = 0;
 777                 return buf;
 778             }
 779 #endif
 780             i --;
 781         }
 782
 783 #if defined(__WXMSW__) || defined(__OS2__)
 784         // Try Drive specifier
 785         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 786         {
 787             // A:junk --> A:. (since A:.\junk Not A:\junk)
 788             buf[2] = wxT('.');
 789             buf[3] = wxT('\0');
 790             return buf;
 791         }
 792 #endif
 793     }
 794     return (wxChar *) NULL;
 795 }
 796
 797 // Return just the directory, or NULL if no directory
 798 wxString wxPathOnly (const wxString& path)
 799 {
 800     if (!path.empty())
 801     {
 802         wxChar buf[_MAXPATHLEN];
 803
 804         // Local copy
 805         wxStrcpy (buf, WXSTRINGCAST path);
 806
 807         int l = path.length();
 808         int i = l - 1;
 809
 810         // Search backward for a backward or forward slash
 811         while (i > -1)
 812         {
 813 #if defined(__WXMAC__) && !defined(__DARWIN__)
 814             // Classic or Carbon CodeWarrior like
 815             // Carbon with Apple DevTools is Unix like
 816             if (path[i] == wxT(':') )
 817             {
 818                 buf[i] = 0;
 819                 return wxString(buf);
 820             }
 821 #else
 822             // Unix like or Windows
 823             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 824             {
 825                 // Don't return an empty string
 826                 if (i == 0)
 827                     i ++;
 828                 buf[i] = 0;
 829                 return wxString(buf);
 830             }
 831 #endif
 832 #ifdef __VMS__
 833             if (path[i] == wxT(']'))
 834             {
 835                 buf[i+1] = 0;
 836                 return wxString(buf);
 837             }
 838 #endif
 839             i --;
 840         }
 841
 842 #if defined(__WXMSW__) || defined(__OS2__)
 843         // Try Drive specifier
 844         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 845         {
 846             // A:junk --> A:. (since A:.\junk Not A:\junk)
 847             buf[2] = wxT('.');
 848             buf[3] = wxT('\0');
 849             return wxString(buf);
 850         }
 851 #endif
 852     }
 853     return wxEmptyString;
 854 }
 855
 856 // Utility for converting delimiters in DOS filenames to UNIX style
 857 // and back again - or we get nasty problems with delimiters.
 858 // Also, convert to lower case, since case is significant in UNIX.
 859
 860 #if defined(__WXMAC__)
 861
 862 #if TARGET_API_MAC_OSX
 863 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 864 #else
 865 #define kDefaultPathStyle kCFURLHFSPathStyle
 866 #endif
 867
 868 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 869 {
 870     CFURLRef fullURLRef;
 871     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 872     if ( additionalPathComponent )
 873     {
 874         CFURLRef parentURLRef = fullURLRef ;
 875         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 876             additionalPathComponent,false);
 877         CFRelease( parentURLRef ) ;
 878     }
 879     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 880     CFRelease( fullURLRef ) ;
 881     return wxMacCFStringHolder(cfString).AsString(wxLocale::GetSystemEncoding());
 882 }
 883
 884 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 885 {
 886     OSStatus err = noErr ;
 887     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) , kDefaultPathStyle, false);
 888     if ( NULL != url )
 889     {
 890         if ( CFURLGetFSRef(url, fsRef) == false )
 891             err = fnfErr ;
 892         CFRelease( url ) ;
 893     }
 894     else
 895     {
 896         err = fnfErr ;
 897     }
 898     return err ;
 899 }
 900
 901 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 902 {
 903     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 904                                                       uniname->unicode,
 905                                                       uniname->length );
 906     return wxMacCFStringHolder(cfname).AsString() ;
 907 }
 908
 909 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 910 {
 911     FSRef fsRef ;
 912     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 913     {
 914         return wxMacFSRefToPath( &fsRef ) ;
 915     }
 916     return wxEmptyString ;
 917 }
 918
 919 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 920 {
 921     OSStatus err = noErr ;
 922     FSRef fsRef ;
 923     wxMacPathToFSRef( path , &fsRef ) ;
 924     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 925 }
 926
 927 #endif // __WXMAC__
 928
 929 void
 930 wxDos2UnixFilename (wxChar *s)
 931 {
 932   if (s)
 933     while (*s)
 934       {
 935         if (*s == _T('\\'))
 936           *s = _T('/');
 937 #ifdef __WXMSW__
 938         else
 939           *s = (wxChar)wxTolower (*s);        // Case INDEPENDENT
 940 #endif
 941         s++;
 942       }
 943 }
 944
 945 void
 946 #if defined(__WXMSW__) || defined(__OS2__)
 947 wxUnix2DosFilename (wxChar *s)
 948 #else
 949 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
 950 #endif
 951 {
 952 // Yes, I really mean this to happen under DOS only! JACS
 953 #if defined(__WXMSW__) || defined(__OS2__)
 954   if (s)
 955     while (*s)
 956       {
 957         if (*s == wxT('/'))
 958           *s = wxT('\\');
 959         s++;
 960       }
 961 #endif
 962 }
 963
 964 // Concatenate two files to form third
 965 bool
 966 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 967 {
 968 #if wxUSE_FILE
 969
 970     wxFile in1(file1), in2(file2);
 971     wxTempFile out(file3);
 972
 973     if ( !in1.IsOpened() || !in2.IsOpened() || !out.IsOpened() )
 974         return false;
 975
 976     ssize_t ofs;
 977     unsigned char buf[1024];
 978
 979     for( int i=0; i<2; i++)
 980     {
 981         wxFile *in = i==0 ? &in1 : &in2;
 982         do{
 983             if ( (ofs = in->Read(buf,WXSIZEOF(buf))) == wxInvalidOffset ) return false;
 984             if ( ofs > 0 )
 985                 if ( !out.Write(buf,ofs) )
 986                     return false;
 987         } while ( ofs == (ssize_t)WXSIZEOF(buf) );
 988     }
 989
 990     return out.Commit();
 991
 992 #else
 993
 994     wxUnusedVar(file1);
 995     wxUnusedVar(file2);
 996     wxUnusedVar(file3);
 997     return false;
 998
 999 #endif
1000 }
1001
1002 // Copy files
1003 bool
1004 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
1005 {
1006 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1007     // CopyFile() copies file attributes and modification time too, so use it
1008     // instead of our code if available
1009     //
1010     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1011     if ( !::CopyFile(file1, file2, !overwrite) )
1012     {
1013         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1014                       file1.c_str(), file2.c_str());
1015
1016         return false;
1017     }
1018 #elif defined(__OS2__)
1019     if ( ::DosCopy((PSZ)file1.c_str(), (PSZ)file2.c_str(), overwrite ? DCPY_EXISTING : 0) != 0 )
1020         return false;
1021 #elif defined(__PALMOS__)
1022     // TODO with http://www.palmos.com/dev/support/docs/protein_books/Memory_Databases_Files/
1023     return false;
1024 #elif wxUSE_FILE // !Win32
1025
1026     wxStructStat fbuf;
1027     // get permissions of file1
1028     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1029     {
1030         // the file probably doesn't exist or we haven't the rights to read
1031         // from it anyhow
1032         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1033                       file1.c_str());
1034         return false;
1035     }
1036
1037     // open file1 for reading
1038     wxFile fileIn(file1, wxFile::read);
1039     if ( !fileIn.IsOpened() )
1040         return false;
1041
1042     // remove file2, if it exists. This is needed for creating
1043     // file2 with the correct permissions in the next step
1044     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1045     {
1046         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1047                       file2.c_str());
1048         return false;
1049     }
1050
1051     // reset the umask as we want to create the file with exactly the same
1052     // permissions as the original one
1053     wxCHANGE_UMASK(0);
1054
1055     // create file2 with the same permissions than file1 and open it for
1056     // writing
1057
1058     wxFile fileOut;
1059     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1060         return false;
1061
1062     // copy contents of file1 to file2
1063     char buf[4096];
1064     size_t count;
1065     for ( ;; )
1066     {
1067         count = fileIn.Read(buf, WXSIZEOF(buf));
1068         if ( fileIn.Error() )
1069             return false;
1070
1071         // end of file?
1072         if ( !count )
1073             break;
1074
1075         if ( fileOut.Write(buf, count) < count )
1076             return false;
1077     }
1078
1079     // we can expect fileIn to be closed successfully, but we should ensure
1080     // that fileOut was closed as some write errors (disk full) might not be
1081     // detected before doing this
1082     if ( !fileIn.Close() || !fileOut.Close() )
1083         return false;
1084
1085 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1086     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1087     // however
1088     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1089     {
1090         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1091                       file2.c_str());
1092         return false;
1093     }
1094 #endif // OS/2 || Mac
1095
1096 #else // !Win32 && ! wxUSE_FILE
1097
1098     // impossible to simulate with wxWidgets API
1099     wxUnusedVar(file1);
1100     wxUnusedVar(file2);
1101     wxUnusedVar(overwrite);
1102     return false;
1103
1104 #endif // __WXMSW__ && __WIN32__
1105
1106     return true;
1107 }
1108
1109 bool
1110 wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite)
1111 {
1112     if ( !overwrite && wxFileExists(file2) )
1113     {
1114         wxLogSysError
1115         (
1116             _("Failed to rename the file '%s' to '%s' because the destination file already exists."),
1117             file1.c_str(), file2.c_str()
1118         );
1119
1120         return false;
1121     }
1122
1123 #if !defined(__WXWINCE__) && !defined(__WXPALMOS__)
1124     // Normal system call
1125   if ( wxRename (file1, file2) == 0 )
1126     return true;
1127 #endif
1128
1129   // Try to copy
1130   if (wxCopyFile(file1, file2, overwrite)) {
1131     wxRemoveFile(file1);
1132     return true;
1133   }
1134   // Give up
1135   return false;
1136 }
1137
1138 bool wxRemoveFile(const wxString& file)
1139 {
1140 #if defined(__VISUALC__) \
1141  || defined(__BORLANDC__) \
1142  || defined(__WATCOMC__) \
1143  || defined(__DMC__) \
1144  || defined(__GNUWIN32__) \
1145  || (defined(__MWERKS__) && defined(__MSL__))
1146     int res = wxRemove(file);
1147 #elif defined(__WXMAC__)
1148     int res = unlink(wxFNCONV(file));
1149 #elif defined(__WXPALMOS__)
1150     int res = 1;
1151     // TODO with VFSFileDelete()
1152 #else
1153     int res = unlink(OS_FILENAME(file));
1154 #endif
1155
1156     return res == 0;
1157 }
1158
1159 bool wxMkdir(const wxString& dir, int perm)
1160 {
1161 #if defined(__WXPALMOS__)
1162     return false;
1163 #elif defined(__WXMAC__) && !defined(__UNIX__)
1164     return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1165 #else // !Mac
1166     const wxChar *dirname = dir.c_str();
1167
1168     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1169     // for the GNU compiler
1170 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1171   #if defined(MSVCRT)
1172     wxUnusedVar(perm);
1173     if ( mkdir(wxFNCONV(dirname)) != 0 )
1174   #else
1175     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1176   #endif
1177 #elif defined(__OS2__)
1178     wxUnusedVar(perm);
1179     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1180 #elif defined(__DOS__)
1181   #if defined(__WATCOMC__)
1182     (void)perm;
1183     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1184   #elif defined(__DJGPP__)
1185     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1186   #else
1187     #error "Unsupported DOS compiler!"
1188   #endif
1189 #else  // !MSW, !DOS and !OS/2 VAC++
1190     wxUnusedVar(perm);
1191 #ifdef __WXWINCE__
1192     if ( !CreateDirectory(dirname, NULL) )
1193 #else
1194     if ( wxMkDir(dir.fn_str()) != 0 )
1195 #endif
1196 #endif // !MSW/MSW
1197     {
1198         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1199
1200         return false;
1201     }
1202
1203     return true;
1204 #endif // Mac/!Mac
1205 }
1206
1207 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1208 {
1209 #if defined(__VMS__)
1210     return false; //to be changed since rmdir exists in VMS7.x
1211 #elif defined(__OS2__)
1212     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1213 #elif defined(__WXWINCE__)
1214     return (CreateDirectory(dir, NULL) != 0);
1215 #elif defined(__WXPALMOS__)
1216     // TODO with VFSFileRename()
1217     return false;
1218 #else
1219     return (wxRmDir(OS_FILENAME(dir)) == 0);
1220 #endif
1221 }
1222
1223 // does the path exists? (may have or not '/' or '\\' at the end)
1224 bool wxDirExists(const wxChar *pszPathName)
1225 {
1226     wxString strPath(pszPathName);
1227
1228 #if defined(__WINDOWS__) || defined(__OS2__)
1229     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1230     // so remove all trailing backslashes from the path - but don't do this for
1231     // the pathes "d:\" (which are different from "d:") nor for just "\"
1232     while ( wxEndsWithPathSeparator(strPath) )
1233     {
1234         size_t len = strPath.length();
1235         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1236             break;
1237
1238         strPath.Truncate(len - 1);
1239     }
1240 #endif // __WINDOWS__
1241
1242 #ifdef __OS2__
1243     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1244     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1245         strPath << _T('.');
1246 #endif
1247
1248 #if defined(__WXPALMOS__)
1249     return false;
1250 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
1251     // stat() can't cope with network paths
1252     DWORD ret = ::GetFileAttributes(strPath);
1253
1254     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1255 #elif defined(__OS2__)
1256     FILESTATUS3 Info = {{0}};
1257     APIRET rc = ::DosQueryPathInfo((PSZ)(WXSTRINGCAST strPath), FIL_STANDARD,
1258                                    (void*) &Info, sizeof(FILESTATUS3));
1259
1260     return ((rc == NO_ERROR) && (Info.attrFile & FILE_DIRECTORY)) ||
1261       (rc == ERROR_SHARING_VIOLATION);
1262     // If we got a sharing violation, there must be something with this name.
1263 #else // !__WIN32__
1264
1265     wxStructStat st;
1266 #ifndef __VISAGECPP__
1267     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1268 #else
1269     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1270     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1271 #endif
1272
1273 #endif // __WIN32__/!__WIN32__
1274 }
1275
1276 // Get a temporary filename, opening and closing the file.
1277 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1278 {
1279 #if wxUSE_FILE
1280     wxString filename = wxFileName::CreateTempFileName(prefix);
1281     if ( filename.empty() )
1282         return NULL;
1283
1284     if ( buf )
1285         wxStrcpy(buf, filename);
1286     else
1287         buf = MYcopystring(filename);
1288
1289     return buf;
1290 #else
1291     wxUnusedVar(prefix);
1292     wxUnusedVar(buf);
1293     // wxFileName::CreateTempFileName needs wxFile class enabled
1294     return NULL;
1295 #endif
1296 }
1297
1298 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1299 {
1300     buf = wxGetTempFileName(prefix);
1301
1302     return !buf.empty();
1303 }
1304
1305 // Get first file name matching given wild card.
1306
1307 static wxDir *gs_dir = NULL;
1308 static wxString gs_dirPath;
1309
1310 wxString wxFindFirstFile(const wxChar *spec, int flags)
1311 {
1312     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1313     if ( gs_dirPath.empty() )
1314         gs_dirPath = wxT(".");
1315     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1316         gs_dirPath << wxFILE_SEP_PATH;
1317
1318     if (gs_dir)
1319         delete gs_dir;
1320     gs_dir = new wxDir(gs_dirPath);
1321
1322     if ( !gs_dir->IsOpened() )
1323     {
1324         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1325         return wxEmptyString;
1326     }
1327
1328     int dirFlags;
1329     switch (flags)
1330     {
1331         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1332         case wxFILE: dirFlags = wxDIR_FILES; break;
1333         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1334     }
1335
1336     wxString result;
1337     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1338     if ( result.empty() )
1339     {
1340         wxDELETE(gs_dir);
1341         return result;
1342     }
1343
1344     return gs_dirPath + result;
1345 }
1346
1347 wxString wxFindNextFile()
1348 {
1349     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1350
1351     wxString result;
1352     gs_dir->GetNext(&result);
1353
1354     if ( result.empty() )
1355     {
1356         wxDELETE(gs_dir);
1357         return result;
1358     }
1359
1360     return gs_dirPath + result;
1361 }
1362
1363
1364 // Get current working directory.
1365 // If buf is NULL, allocates space using new, else copies into buf.
1366 // wxGetWorkingDirectory() is obsolete, use wxGetCwd()
1367 // wxDoGetCwd() is their common core to be moved
1368 // to wxGetCwd() once wxGetWorkingDirectory() will be removed.
1369 // Do not expose wxDoGetCwd in headers!
1370
1371 wxChar *wxDoGetCwd(wxChar *buf, int sz)
1372 {
1373 #if defined(__WXPALMOS__)
1374     // TODO
1375     if(buf && sz>0) buf[0] = _T('\0');
1376     return buf;
1377 #elif defined(__WXWINCE__)
1378     // TODO
1379     if(buf && sz>0) buf[0] = _T('\0');
1380     return buf;
1381 #else
1382     if ( !buf )
1383     {
1384         buf = new wxChar[sz + 1];
1385     }
1386
1387     bool ok wxDUMMY_INITIALIZE(false);
1388
1389     // for the compilers which have Unicode version of _getcwd(), call it
1390     // directly, for the others call the ANSI version and do the translation
1391 #if !wxUSE_UNICODE
1392     #define cbuf buf
1393 #else // wxUSE_UNICODE
1394     bool needsANSI = true;
1395
1396     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1397         char cbuf[_MAXPATHLEN];
1398     #endif
1399
1400     #ifdef HAVE_WGETCWD
1401         #if wxUSE_UNICODE_MSLU
1402             if ( wxGetOsVersion() != wxWIN95 )
1403         #else
1404             char *cbuf = NULL; // never really used because needsANSI will always be false
1405         #endif
1406             {
1407                 ok = _wgetcwd(buf, sz) != NULL;
1408                 needsANSI = false;
1409             }
1410     #endif
1411
1412     if ( needsANSI )
1413 #endif // wxUSE_UNICODE
1414     {
1415     #if defined(_MSC_VER) || defined(__MINGW32__)
1416         ok = _getcwd(cbuf, sz) != NULL;
1417     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1418         char lbuf[1024] ;
1419         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1420         {
1421             wxString res( lbuf , *wxConvCurrent ) ;
1422             wxStrcpy( buf , res ) ;
1423             ok = true;
1424         }
1425         else
1426             ok = false ;
1427     #elif defined(__OS2__)
1428         APIRET rc;
1429         ULONG ulDriveNum = 0;
1430         ULONG ulDriveMap = 0;
1431         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1432         ok = rc == 0;
1433         if (ok)
1434         {
1435             sz -= 3;
1436             rc = ::DosQueryCurrentDir( 0 // current drive
1437                                       ,cbuf + 3
1438                                       ,(PULONG)&sz
1439                                      );
1440             cbuf[0] = char('A' + (ulDriveNum - 1));
1441             cbuf[1] = ':';
1442             cbuf[2] = '\\';
1443             ok = rc == 0;
1444         }
1445     #else // !Win32/VC++ !Mac !OS2
1446         ok = getcwd(cbuf, sz) != NULL;
1447     #endif // platform
1448
1449     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1450         // finally convert the result to Unicode if needed
1451         wxConvFile.MB2WC(buf, cbuf, sz);
1452     #endif // wxUSE_UNICODE
1453     }
1454
1455     if ( !ok )
1456     {
1457         wxLogSysError(_("Failed to get the working directory"));
1458
1459         // VZ: the old code used to return "." on error which didn't make any
1460         //     sense at all to me - empty string is a better error indicator
1461         //     (NULL might be even better but I'm afraid this could lead to
1462         //     problems with the old code assuming the return is never NULL)
1463         buf[0] = _T('\0');
1464     }
1465     else // ok, but we might need to massage the path into the right format
1466     {
1467 #ifdef __DJGPP__
1468         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1469         //     with / deliminers. We don't like that.
1470         for (wxChar *ch = buf; *ch; ch++)
1471         {
1472             if (*ch == wxT('/'))
1473                 *ch = wxT('\\');
1474         }
1475 #endif // __DJGPP__
1476
1477 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1478 //      he needs Unix as opposed to Win32 pathnames
1479 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1480         // another example of DOS/Unix mix (Cygwin)
1481         wxString pathUnix = buf;
1482 #if wxUSE_UNICODE
1483         char bufA[_MAXPATHLEN];
1484         cygwin_conv_to_full_win32_path(pathUnix.mb_str(wxConvFile), bufA);
1485         wxConvFile.MB2WC(buf, bufA, sz);
1486 #else
1487         cygwin_conv_to_full_win32_path(pathUnix, buf);
1488 #endif // wxUSE_UNICODE
1489 #endif // __CYGWIN__
1490     }
1491
1492     return buf;
1493
1494 #if !wxUSE_UNICODE
1495     #undef cbuf
1496 #endif
1497
1498 #endif
1499     // __WXWINCE__
1500 }
1501
1502 #if WXWIN_COMPATIBILITY_2_6
1503 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1504 {
1505     return wxDoGetCwd(buf,sz);
1506 }
1507 #endif // WXWIN_COMPATIBILITY_2_6
1508
1509 wxString wxGetCwd()
1510 {
1511     wxString str;
1512     wxDoGetCwd(wxStringBuffer(str, _MAXPATHLEN), _MAXPATHLEN);
1513     return str;
1514 }
1515
1516 bool wxSetWorkingDirectory(const wxString& d)
1517 {
1518 #if defined(__OS2__)
1519     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1520 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1521     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1522 #elif defined(__WINDOWS__)
1523
1524 #ifdef __WIN32__
1525 #ifdef __WXWINCE__
1526     // No equivalent in WinCE
1527     wxUnusedVar(d);
1528     return false;
1529 #else
1530     return (bool)(SetCurrentDirectory(d) != 0);
1531 #endif
1532 #else
1533     // Must change drive, too.
1534     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1535     if (isDriveSpec)
1536     {
1537         wxChar firstChar = d[0];
1538
1539         // To upper case
1540         if (firstChar > 90)
1541             firstChar = firstChar - 32;
1542
1543         // To a drive number
1544         unsigned int driveNo = firstChar - 64;
1545         if (driveNo > 0)
1546         {
1547             unsigned int noDrives;
1548             _dos_setdrive(driveNo, &noDrives);
1549         }
1550     }
1551     bool success = (chdir(WXSTRINGCAST d) == 0);
1552
1553     return success;
1554 #endif
1555
1556 #endif
1557 }
1558
1559 // Get the OS directory if appropriate (such as the Windows directory).
1560 // On non-Windows platform, probably just return the empty string.
1561 wxString wxGetOSDirectory()
1562 {
1563 #ifdef __WXWINCE__
1564     return wxString(wxT("\\Windows"));
1565 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1566     wxChar buf[256];
1567     GetWindowsDirectory(buf, 256);
1568     return wxString(buf);
1569 #elif defined(__WXMAC__)
1570     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1571 #else
1572     return wxEmptyString;
1573 #endif
1574 }
1575
1576 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1577 {
1578     size_t len = wxStrlen(pszFileName);
1579
1580     return len && wxIsPathSeparator(pszFileName[len - 1]);
1581 }
1582
1583 // find a file in a list of directories, returns false if not found
1584 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1585 {
1586     // we assume that it's not empty
1587     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1588                  _T("empty file name in wxFindFileInPath"));
1589
1590     // skip path separator in the beginning of the file name if present
1591     if ( wxIsPathSeparator(*pszFile) )
1592         pszFile++;
1593
1594     // copy the path (strtok will modify it)
1595     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1596     wxStrcpy(szPath, pszPath);
1597
1598     wxString strFile;
1599     wxChar *pc, *save_ptr;
1600     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1601           pc != NULL;
1602           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1603     {
1604         // search for the file in this directory
1605         strFile = pc;
1606         if ( !wxEndsWithPathSeparator(pc) )
1607             strFile += wxFILE_SEP_PATH;
1608         strFile += pszFile;
1609
1610         if ( wxFileExists(strFile) ) {
1611             *pStr = strFile;
1612             break;
1613         }
1614     }
1615
1616     // suppress warning about unused variable save_ptr when wxStrtok() is a
1617     // macro which throws away its third argument
1618     save_ptr = pc;
1619
1620     delete [] szPath;
1621
1622     return pc != NULL;  // if true => we breaked from the loop
1623 }
1624
1625 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1626                              wxString *pstrPath,
1627                              wxString *pstrName,
1628                              wxString *pstrExt)
1629 {
1630     // it can be empty, but it shouldn't be NULL
1631     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1632
1633     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1634 }
1635
1636 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1637 {
1638     wxDateTime mtime;
1639     if ( !wxFileName(filename).GetTimes(NULL, &mtime, NULL) )
1640         return (time_t)-1;
1641
1642     return mtime.GetTicks();
1643 }
1644
1645
1646 // Parses the filterStr, returning the number of filters.
1647 // Returns 0 if none or if there's a problem.
1648 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpeg"
1649
1650 int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr,
1651                                            wxArrayString& descriptions,
1652                                            wxArrayString& filters)
1653 {
1654     descriptions.Clear();
1655     filters.Clear();
1656
1657     wxString str(filterStr);
1658
1659     wxString description, filter;
1660     int pos = 0;
1661     while( pos != wxNOT_FOUND )
1662     {
1663         pos = str.Find(wxT('|'));
1664         if ( pos == wxNOT_FOUND )
1665         {
1666             // if there are no '|'s at all in the string just take the entire
1667             // string as filter and make description empty for later autocompletion
1668             if ( filters.IsEmpty() )
1669             {
1670                 descriptions.Add(wxEmptyString);
1671                 filters.Add(filterStr);
1672             }
1673             else
1674             {
1675                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1676             }
1677
1678             break;
1679         }
1680
1681         description = str.Left(pos);
1682         str = str.Mid(pos + 1);
1683         pos = str.Find(wxT('|'));
1684         if ( pos == wxNOT_FOUND )
1685         {
1686             filter = str;
1687         }
1688         else
1689         {
1690             filter = str.Left(pos);
1691             str = str.Mid(pos + 1);
1692         }
1693
1694         descriptions.Add(description);
1695         filters.Add(filter);
1696     }
1697
1698 #if defined(__WXMOTIF__)
1699     // split it so there is one wildcard per entry
1700     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1701     {
1702         pos = filters[i].Find(wxT(';'));
1703         if (pos != wxNOT_FOUND)
1704         {
1705             // first split only filters
1706             descriptions.Insert(descriptions[i],i+1);
1707             filters.Insert(filters[i].Mid(pos+1),i+1);
1708             filters[i]=filters[i].Left(pos);
1709
1710             // autoreplace new filter in description with pattern:
1711             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1712             // cause split into:
1713             //     C/C++ Files(*.cpp)|*.cpp
1714             //     C/C++ Files(*.c;*.h)|*.c;*.h
1715             // and next iteration cause another split into:
1716             //     C/C++ Files(*.cpp)|*.cpp
1717             //     C/C++ Files(*.c)|*.c
1718             //     C/C++ Files(*.h)|*.h
1719             for ( size_t k=i;k<i+2;k++ )
1720             {
1721                 pos = descriptions[k].Find(filters[k]);
1722                 if (pos != wxNOT_FOUND)
1723                 {
1724                     wxString before = descriptions[k].Left(pos);
1725                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1726                     pos = before.Find(_T('('),true);
1727                     if (pos>before.Find(_T(')'),true))
1728                     {
1729                         before = before.Left(pos+1);
1730                         before << filters[k];
1731                         pos = after.Find(_T(')'));
1732                         int pos1 = after.Find(_T('('));
1733                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1734                         {
1735                             before << after.Mid(pos);
1736                             descriptions[k] = before;
1737                         }
1738                     }
1739                 }
1740             }
1741         }
1742     }
1743 #endif
1744
1745     // autocompletion
1746     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1747     {
1748         if ( descriptions[j].empty() && !filters[j].empty() )
1749         {
1750             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1751         }
1752     }
1753
1754     return filters.GetCount();
1755 }
1756
1757
1758 //------------------------------------------------------------------------
1759 // wild character routines
1760 //------------------------------------------------------------------------
1761
1762 bool wxIsWild( const wxString& pattern )
1763 {
1764     wxString tmp = pattern;
1765     wxChar *pat = WXSTRINGCAST(tmp);
1766     while (*pat)
1767     {
1768         switch (*pat++)
1769         {
1770         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1771             return true;
1772         case wxT('\\'):
1773             if (!*pat++)
1774                 return false;
1775         }
1776     }
1777     return false;
1778 }
1779
1780 /*
1781 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1782 *
1783 * The match procedure is public domain code (from ircII's reg.c)
1784 * but modified to suit our tastes (RN: No "%" syntax I guess)
1785 */
1786
1787 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1788 {
1789     if (text.empty())
1790     {
1791         /* Match if both are empty. */
1792         return pat.empty();
1793     }
1794
1795     const wxChar *m = pat.c_str(),
1796     *n = text.c_str(),
1797     *ma = NULL,
1798     *na = NULL;
1799     int just = 0,
1800     acount = 0,
1801     count = 0;
1802
1803     if (dot_special && (*n == wxT('.')))
1804     {
1805         /* Never match so that hidden Unix files
1806          * are never found. */
1807         return false;
1808     }
1809
1810     for (;;)
1811     {
1812         if (*m == wxT('*'))
1813         {
1814             ma = ++m;
1815             na = n;
1816             just = 1;
1817             acount = count;
1818         }
1819         else if (*m == wxT('?'))
1820         {
1821             m++;
1822             if (!*n++)
1823                 return false;
1824         }
1825         else
1826         {
1827             if (*m == wxT('\\'))
1828             {
1829                 m++;
1830                 /* Quoting "nothing" is a bad thing */
1831                 if (!*m)
1832                     return false;
1833             }
1834             if (!*m)
1835             {
1836                 /*
1837                 * If we are out of both strings or we just
1838                 * saw a wildcard, then we can say we have a
1839                 * match
1840                 */
1841                 if (!*n)
1842                     return true;
1843                 if (just)
1844                     return true;
1845                 just = 0;
1846                 goto not_matched;
1847             }
1848             /*
1849             * We could check for *n == NULL at this point, but
1850             * since it's more common to have a character there,
1851             * check to see if they match first (m and n) and
1852             * then if they don't match, THEN we can check for
1853             * the NULL of n
1854             */
1855             just = 0;
1856             if (*m == *n)
1857             {
1858                 m++;
1859                 count++;
1860                 n++;
1861             }
1862             else
1863             {
1864
1865                 not_matched:
1866
1867                 /*
1868                 * If there are no more characters in the
1869                 * string, but we still need to find another
1870                 * character (*m != NULL), then it will be
1871                 * impossible to match it
1872                 */
1873                 if (!*n)
1874                     return false;
1875
1876                 if (ma)
1877                 {
1878                     m = ma;
1879                     n = ++na;
1880                     count = acount;
1881                 }
1882                 else
1883                     return false;
1884             }
1885         }
1886     }
1887 }
1888
1889 // Return the type of an open file
1890 //
1891 // Some file types on some platforms seem seekable but in fact are not.
1892 // The main use of this function is to allow such cases to be detected
1893 // (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
1894 //
1895 // This is important for the archive streams, which benefit greatly from
1896 // being able to seek on a stream, but which will produce corrupt archives
1897 // if they unknowingly seek on a non-seekable stream.
1898 //
1899 // wxFILE_KIND_DISK is a good catch all return value, since other values
1900 // disable features of the archive streams. Some other value must be returned
1901 // for a file type that appears seekable but isn't.
1902 //
1903 // Known examples:
1904 //   *  Pipes on Windows
1905 //   *  Files on VMS with a record format other than StreamLF
1906 //
1907 wxFileKind wxGetFileKind(int fd)
1908 {
1909 #if defined __WXMSW__ && !defined __WXWINCE__ && defined wxGetOSFHandle
1910     switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
1911     {
1912         case FILE_TYPE_CHAR:
1913             return wxFILE_KIND_TERMINAL;
1914         case FILE_TYPE_DISK:
1915             return wxFILE_KIND_DISK;
1916         case FILE_TYPE_PIPE:
1917             return wxFILE_KIND_PIPE;
1918     }
1919
1920     return wxFILE_KIND_UNKNOWN;
1921
1922 #elif defined(__UNIX__)
1923     if (isatty(fd))
1924         return wxFILE_KIND_TERMINAL;
1925
1926     struct stat st;
1927     fstat(fd, &st);
1928
1929     if (S_ISFIFO(st.st_mode))
1930         return wxFILE_KIND_PIPE;
1931     if (!S_ISREG(st.st_mode))
1932         return wxFILE_KIND_UNKNOWN;
1933
1934     #if defined(__VMS__)
1935         if (st.st_fab_rfm != FAB$C_STMLF)
1936             return wxFILE_KIND_UNKNOWN;
1937     #endif
1938
1939     return wxFILE_KIND_DISK;
1940
1941 #else
1942     #define wxFILEKIND_STUB
1943     (void)fd;
1944     return wxFILE_KIND_DISK;
1945 #endif
1946 }
1947
1948 wxFileKind wxGetFileKind(FILE *fp)
1949 {
1950     // Note: The watcom rtl dll doesn't have fileno (the static lib does).
1951     //       Should be fixed in version 1.4.
1952 #if defined(wxFILEKIND_STUB) || wxONLY_WATCOM_EARLIER_THAN(1,4)
1953     (void)fp;
1954     return wxFILE_KIND_DISK;
1955 #else
1956     return fp ? wxGetFileKind(fileno(fp)) : wxFILE_KIND_UNKNOWN;
1957 #endif
1958 }
1959
1960 #ifdef __VISUALC__
1961     #pragma warning(default:4706)   // assignment within conditional expression
1962 #endif // VC++