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     #ifndef S_ISREG
 303         #define S_ISREG(mode) ((mode) & S_IFREG)
 304     #endif
 305     wxStructStat st;
 306 #ifndef wxNEED_WX_UNISTD_H
 307     return (wxStat( filename.fn_str() , &st) == 0 && S_ISREG(st.st_mode))
 308 #ifdef __OS2__
 309       || (errno == EACCES) // if access is denied something with that name
 310                             // exists and is opened in exclusive mode.
 311 #endif
 312       ;
 313 #else
 314     return wxStat( filename , &st) == 0 && S_ISREG(st.st_mode);
 315 #endif
 316 #endif // __WIN32__/!__WIN32__
 317 }
 318
 319 bool
 320 wxIsAbsolutePath (const wxString& filename)
 321 {
 322     if (!filename.empty())
 323     {
 324 #if defined(__WXMAC__) && !defined(__DARWIN__)
 325         // Classic or Carbon CodeWarrior like
 326         // Carbon with Apple DevTools is Unix like
 327
 328         // This seems wrong to me, but there is no fix. since
 329         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 330         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 331         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 332             return true ;
 333 #else
 334         // Unix like or Windows
 335         if (filename[0] == wxT('/'))
 336             return true;
 337 #endif
 338 #ifdef __VMS__
 339         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 340             return true;
 341 #endif
 342 #if defined(__WINDOWS__) || defined(__OS2__)
 343         // MSDOS like
 344         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 345             return true;
 346 #endif
 347     }
 348     return false ;
 349 }
 350
 351 /*
 352  * Strip off any extension (dot something) from end of file,
 353  * IF one exists. Inserts zero into buffer.
 354  *
 355  */
 356
 357 void wxStripExtension(wxChar *buffer)
 358 {
 359     int len = wxStrlen(buffer);
 360     int i = len-1;
 361     while (i > 0)
 362     {
 363         if (buffer[i] == wxT('.'))
 364         {
 365             buffer[i] = 0;
 366             break;
 367         }
 368         i --;
 369     }
 370 }
 371
 372 void wxStripExtension(wxString& buffer)
 373 {
 374     //RN:  Be careful about the handling the case where
 375     //buffer.length() == 0
 376     for(size_t i = buffer.length() - 1; i != wxString::npos; --i)
 377     {
 378         if (buffer.GetChar(i) == wxT('.'))
 379         {
 380           buffer = buffer.Left(i);
 381           break;
 382         }
 383     }
 384 }
 385
 386 // Destructive removal of /./ and /../ stuff
 387 wxChar *wxRealPath (wxChar *path)
 388 {
 389 #ifdef __WXMSW__
 390   static const wxChar SEP = wxT('\\');
 391   wxUnix2DosFilename(path);
 392 #else
 393   static const wxChar SEP = wxT('/');
 394 #endif
 395   if (path[0] && path[1]) {
 396     /* MATTHEW: special case "/./x" */
 397     wxChar *p;
 398     if (path[2] == SEP && path[1] == wxT('.'))
 399       p = &path[0];
 400     else
 401       p = &path[2];
 402     for (; *p; p++)
 403       {
 404         if (*p == SEP)
 405           {
 406             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 407               {
 408                 wxChar *q;
 409                 for (q = p - 1; q >= path && *q != SEP; q--)
 410                 {
 411                     // Empty
 412                 }
 413
 414                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 415                     && (q - 1 <= path || q[-1] != SEP))
 416                   {
 417                     wxStrcpy (q, p + 3);
 418                     if (path[0] == wxT('\0'))
 419                       {
 420                         path[0] = SEP;
 421                         path[1] = wxT('\0');
 422                       }
 423 #if defined(__WXMSW__) || defined(__OS2__)
 424                     /* Check that path[2] is NULL! */
 425                     else if (path[1] == wxT(':') && !path[2])
 426                       {
 427                         path[2] = SEP;
 428                         path[3] = wxT('\0');
 429                       }
 430 #endif
 431                     p = q - 1;
 432                   }
 433               }
 434             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 435               wxStrcpy (p, p + 2);
 436           }
 437       }
 438   }
 439   return path;
 440 }
 441
 442 wxString wxRealPath(const wxString& path)
 443 {
 444     wxChar *buf1=MYcopystring(path);
 445     wxChar *buf2=wxRealPath(buf1);
 446     wxString buf(buf2);
 447     delete [] buf1;
 448     return buf;
 449 }
 450
 451
 452 // Must be destroyed
 453 wxChar *wxCopyAbsolutePath(const wxString& filename)
 454 {
 455     if (filename.empty())
 456         return (wxChar *) NULL;
 457
 458     if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename)))
 459     {
 460         wxString buf = ::wxGetCwd();
 461         wxChar ch = buf.Last();
 462 #ifdef __WXMSW__
 463         if (ch != wxT('\\') && ch != wxT('/'))
 464             buf << wxT("\\");
 465 #else
 466         if (ch != wxT('/'))
 467             buf << wxT("/");
 468 #endif
 469         buf << wxFileFunctionsBuffer;
 470         buf = wxRealPath( buf );
 471         return MYcopystring( buf );
 472     }
 473     return MYcopystring( wxFileFunctionsBuffer );
 474 }
 475
 476 /*-
 477  Handles:
 478    ~/ => home dir
 479    ~user/ => user's home dir
 480    If the environment variable a = "foo" and b = "bar" then:
 481    Unix:
 482         $a        =>        foo
 483         $a$b        =>        foobar
 484         $a.c        =>        foo.c
 485         xxx$a        =>        xxxfoo
 486         ${a}!        =>        foo!
 487         $(b)!        =>        bar!
 488         \$a        =>        \$a
 489    MSDOS:
 490         $a        ==>        $a
 491         $(a)        ==>        foo
 492         $(a)$b        ==>        foo$b
 493         $(a)$(b)==>        foobar
 494         test.$$        ==>        test.$$
 495  */
 496
 497 /* input name in name, pathname output to buf. */
 498
 499 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 500 {
 501     register wxChar *d, *s, *nm;
 502     wxChar          lnm[_MAXPATHLEN];
 503     int             q;
 504
 505     // Some compilers don't like this line.
 506 //    const wxChar    trimchars[] = wxT("\n \t");
 507
 508     wxChar      trimchars[4];
 509     trimchars[0] = wxT('\n');
 510     trimchars[1] = wxT(' ');
 511     trimchars[2] = wxT('\t');
 512     trimchars[3] = 0;
 513
 514 #ifdef __WXMSW__
 515     const wxChar     SEP = wxT('\\');
 516 #else
 517     const wxChar     SEP = wxT('/');
 518 #endif
 519     buf[0] = wxT('\0');
 520     if (name == NULL || *name == wxT('\0'))
 521         return buf;
 522     nm = MYcopystring(name); // Make a scratch copy
 523     wxChar *nm_tmp = nm;
 524
 525     /* Skip leading whitespace and cr */
 526     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 527         nm++;
 528     /* And strip off trailing whitespace and cr */
 529     s = nm + (q = wxStrlen(nm)) - 1;
 530     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 531         *s = wxT('\0');
 532
 533     s = nm;
 534     d = lnm;
 535 #ifdef __WXMSW__
 536     q = FALSE;
 537 #else
 538     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 539 #endif
 540
 541     /* Expand inline environment variables */
 542 #ifdef __VISAGECPP__
 543     while (*d)
 544     {
 545       *d++ = *s;
 546       if(*s == wxT('\\'))
 547       {
 548         *(d - 1) = *++s;
 549         if (*d)
 550         {
 551           s++;
 552           continue;
 553         }
 554         else
 555            break;
 556       }
 557       else
 558 #else
 559     while ((*d++ = *s) != 0) {
 560 #  ifndef __WXMSW__
 561         if (*s == wxT('\\')) {
 562             if ((*(d - 1) = *++s)!=0) {
 563                 s++;
 564                 continue;
 565             } else
 566                 break;
 567         } else
 568 #  endif
 569 #endif
 570             // No env variables on WinCE
 571 #ifndef __WXWINCE__
 572 #ifdef __WXMSW__
 573         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 574 #else
 575         if (*s++ == wxT('$'))
 576 #endif
 577         {
 578             register wxChar  *start = d;
 579             register int     braces = (*s == wxT('{') || *s == wxT('('));
 580             register wxChar  *value;
 581             while ((*d++ = *s) != 0)
 582                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 583                     break;
 584                 else
 585                     s++;
 586             *--d = 0;
 587             value = wxGetenv(braces ? start + 1 : start);
 588             if (value) {
 589                 for ((d = start - 1); (*d++ = *value++) != 0;)
 590                 {
 591                     // Empty
 592                 }
 593
 594                 d--;
 595                 if (braces && *s)
 596                     s++;
 597             }
 598         }
 599 #endif
 600         // __WXWINCE__
 601     }
 602
 603     /* Expand ~ and ~user */
 604     nm = lnm;
 605     if (nm[0] == wxT('~') && !q)
 606     {
 607         /* prefix ~ */
 608         if (nm[1] == SEP || nm[1] == 0)
 609         {        /* ~/filename */
 610         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 611             if ((s = WXSTRINGCAST wxGetUserHome(wxEmptyString)) != NULL) {
 612                 if (*++nm)
 613                     nm++;
 614             }
 615         } else
 616         {                /* ~user/filename */
 617             register wxChar  *nnm;
 618             register wxChar  *home;
 619             for (s = nm; *s && *s != SEP; s++)
 620             {
 621                 // Empty
 622             }
 623             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 624             was_sep = (*s == SEP);
 625             nnm = *s ? s + 1 : s;
 626             *s = 0;
 627         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 628             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL)
 629             {
 630                 if (was_sep) /* replace only if it was there: */
 631                     *s = SEP;
 632                 s = NULL;
 633             }
 634             else
 635             {
 636                 nm = nnm;
 637                 s = home;
 638             }
 639         }
 640     }
 641
 642     d = buf;
 643     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 644         /* Copy home dir */
 645         while (wxT('\0') != (*d++ = *s++))
 646           /* loop */;
 647         // Handle root home
 648         if (d - 1 > buf && *(d - 2) != SEP)
 649           *(d - 1) = SEP;
 650     }
 651     s = nm;
 652     while ((*d++ = *s++) != 0)
 653     {
 654         // Empty
 655     }
 656     delete[] nm_tmp; // clean up alloc
 657     /* Now clean up the buffer */
 658     return wxRealPath(buf);
 659 }
 660
 661 /* Contract Paths to be build upon an environment variable
 662    component:
 663
 664    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 665
 666    The call wxExpandPath can convert these back!
 667  */
 668 wxChar *
 669 wxContractPath (const wxString& filename,
 670                 const wxString& WXUNUSED_IN_WINCE(envname),
 671                 const wxString& user)
 672 {
 673   static wxChar dest[_MAXPATHLEN];
 674
 675   if (filename.empty())
 676     return (wxChar *) NULL;
 677
 678   wxStrcpy (dest, WXSTRINGCAST filename);
 679 #ifdef __WXMSW__
 680   wxUnix2DosFilename(dest);
 681 #endif
 682
 683   // Handle environment
 684   const wxChar *val;
 685 #ifndef __WXWINCE__
 686   wxChar *tcp;
 687   if (!envname.empty() && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 688      (tcp = wxStrstr (dest, val)) != NULL)
 689     {
 690         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 691         *tcp++ = wxT('$');
 692         *tcp++ = wxT('{');
 693         wxStrcpy (tcp, WXSTRINGCAST envname);
 694         wxStrcat (tcp, wxT("}"));
 695         wxStrcat (tcp, wxFileFunctionsBuffer);
 696     }
 697 #endif
 698
 699   // Handle User's home (ignore root homes!)
 700   val = wxGetUserHome (user);
 701   if (!val)
 702     return dest;
 703
 704   const size_t len = wxStrlen(val);
 705   if (len <= 2)
 706     return dest;
 707
 708   if (wxStrncmp(dest, val, len) == 0)
 709   {
 710     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 711     if (!user.empty())
 712            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 713     wxStrcat(wxFileFunctionsBuffer, dest + len);
 714     wxStrcpy (dest, wxFileFunctionsBuffer);
 715   }
 716
 717   return dest;
 718 }
 719
 720 // Return just the filename, not the path (basename)
 721 wxChar *wxFileNameFromPath (wxChar *path)
 722 {
 723     wxString p = path;
 724     wxString n = wxFileNameFromPath(p);
 725
 726     return path + p.length() - n.length();
 727 }
 728
 729 wxString wxFileNameFromPath (const wxString& path)
 730 {
 731     wxString name, ext;
 732     wxFileName::SplitPath(path, NULL, &name, &ext);
 733
 734     wxString fullname = name;
 735     if ( !ext.empty() )
 736     {
 737         fullname << wxFILE_SEP_EXT << ext;
 738     }
 739
 740     return fullname;
 741 }
 742
 743 // Return just the directory, or NULL if no directory
 744 wxChar *
 745 wxPathOnly (wxChar *path)
 746 {
 747     if (path && *path)
 748     {
 749         static wxChar buf[_MAXPATHLEN];
 750
 751         // Local copy
 752         wxStrcpy (buf, path);
 753
 754         int l = wxStrlen(path);
 755         int i = l - 1;
 756
 757         // Search backward for a backward or forward slash
 758         while (i > -1)
 759         {
 760 #if defined(__WXMAC__) && !defined(__DARWIN__)
 761             // Classic or Carbon CodeWarrior like
 762             // Carbon with Apple DevTools is Unix like
 763             if (path[i] == wxT(':') )
 764             {
 765                 buf[i] = 0;
 766                 return buf;
 767             }
 768 #else
 769             // Unix like or Windows
 770             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 771             {
 772                 buf[i] = 0;
 773                 return buf;
 774             }
 775 #endif
 776 #ifdef __VMS__
 777             if (path[i] == wxT(']'))
 778             {
 779                 buf[i+1] = 0;
 780                 return buf;
 781             }
 782 #endif
 783             i --;
 784         }
 785
 786 #if defined(__WXMSW__) || defined(__OS2__)
 787         // Try Drive specifier
 788         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 789         {
 790             // A:junk --> A:. (since A:.\junk Not A:\junk)
 791             buf[2] = wxT('.');
 792             buf[3] = wxT('\0');
 793             return buf;
 794         }
 795 #endif
 796     }
 797     return (wxChar *) NULL;
 798 }
 799
 800 // Return just the directory, or NULL if no directory
 801 wxString wxPathOnly (const wxString& path)
 802 {
 803     if (!path.empty())
 804     {
 805         wxChar buf[_MAXPATHLEN];
 806
 807         // Local copy
 808         wxStrcpy (buf, WXSTRINGCAST path);
 809
 810         int l = path.length();
 811         int i = l - 1;
 812
 813         // Search backward for a backward or forward slash
 814         while (i > -1)
 815         {
 816 #if defined(__WXMAC__) && !defined(__DARWIN__)
 817             // Classic or Carbon CodeWarrior like
 818             // Carbon with Apple DevTools is Unix like
 819             if (path[i] == wxT(':') )
 820             {
 821                 buf[i] = 0;
 822                 return wxString(buf);
 823             }
 824 #else
 825             // Unix like or Windows
 826             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 827             {
 828                 // Don't return an empty string
 829                 if (i == 0)
 830                     i ++;
 831                 buf[i] = 0;
 832                 return wxString(buf);
 833             }
 834 #endif
 835 #ifdef __VMS__
 836             if (path[i] == wxT(']'))
 837             {
 838                 buf[i+1] = 0;
 839                 return wxString(buf);
 840             }
 841 #endif
 842             i --;
 843         }
 844
 845 #if defined(__WXMSW__) || defined(__OS2__)
 846         // Try Drive specifier
 847         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 848         {
 849             // A:junk --> A:. (since A:.\junk Not A:\junk)
 850             buf[2] = wxT('.');
 851             buf[3] = wxT('\0');
 852             return wxString(buf);
 853         }
 854 #endif
 855     }
 856     return wxEmptyString;
 857 }
 858
 859 // Utility for converting delimiters in DOS filenames to UNIX style
 860 // and back again - or we get nasty problems with delimiters.
 861 // Also, convert to lower case, since case is significant in UNIX.
 862
 863 #if defined(__WXMAC__)
 864
 865 #if TARGET_API_MAC_OSX
 866 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 867 #else
 868 #define kDefaultPathStyle kCFURLHFSPathStyle
 869 #endif
 870
 871 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 872 {
 873     CFURLRef fullURLRef;
 874     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 875     if ( additionalPathComponent )
 876     {
 877         CFURLRef parentURLRef = fullURLRef ;
 878         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 879             additionalPathComponent,false);
 880         CFRelease( parentURLRef ) ;
 881     }
 882     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 883     CFRelease( fullURLRef ) ;
 884     return wxMacCFStringHolder(cfString).AsString(wxLocale::GetSystemEncoding());
 885 }
 886
 887 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 888 {
 889     OSStatus err = noErr ;
 890     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) , kDefaultPathStyle, false);
 891     if ( NULL != url )
 892     {
 893         if ( CFURLGetFSRef(url, fsRef) == false )
 894             err = fnfErr ;
 895         CFRelease( url ) ;
 896     }
 897     else
 898     {
 899         err = fnfErr ;
 900     }
 901     return err ;
 902 }
 903
 904 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 905 {
 906     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 907                                                       uniname->unicode,
 908                                                       uniname->length );
 909     return wxMacCFStringHolder(cfname).AsString() ;
 910 }
 911
 912 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 913 {
 914     FSRef fsRef ;
 915     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 916     {
 917         return wxMacFSRefToPath( &fsRef ) ;
 918     }
 919     return wxEmptyString ;
 920 }
 921
 922 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 923 {
 924     OSStatus err = noErr ;
 925     FSRef fsRef ;
 926     wxMacPathToFSRef( path , &fsRef ) ;
 927     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 928 }
 929
 930 #endif // __WXMAC__
 931
 932 void
 933 wxDos2UnixFilename (wxChar *s)
 934 {
 935   if (s)
 936     while (*s)
 937       {
 938         if (*s == _T('\\'))
 939           *s = _T('/');
 940 #ifdef __WXMSW__
 941         else
 942           *s = (wxChar)wxTolower (*s);        // Case INDEPENDENT
 943 #endif
 944         s++;
 945       }
 946 }
 947
 948 void
 949 #if defined(__WXMSW__) || defined(__OS2__)
 950 wxUnix2DosFilename (wxChar *s)
 951 #else
 952 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
 953 #endif
 954 {
 955 // Yes, I really mean this to happen under DOS only! JACS
 956 #if defined(__WXMSW__) || defined(__OS2__)
 957   if (s)
 958     while (*s)
 959       {
 960         if (*s == wxT('/'))
 961           *s = wxT('\\');
 962         s++;
 963       }
 964 #endif
 965 }
 966
 967 // Concatenate two files to form third
 968 bool
 969 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 970 {
 971 #if wxUSE_FILE
 972
 973     wxFile in1(file1), in2(file2);
 974     wxTempFile out(file3);
 975
 976     if ( !in1.IsOpened() || !in2.IsOpened() || !out.IsOpened() )
 977         return false;
 978
 979     ssize_t ofs;
 980     unsigned char buf[1024];
 981
 982     for( int i=0; i<2; i++)
 983     {
 984         wxFile *in = i==0 ? &in1 : &in2;
 985         do{
 986             if ( (ofs = in->Read(buf,WXSIZEOF(buf))) == wxInvalidOffset ) return false;
 987             if ( ofs > 0 )
 988                 if ( !out.Write(buf,ofs) )
 989                     return false;
 990         } while ( ofs == (ssize_t)WXSIZEOF(buf) );
 991     }
 992
 993     return out.Commit();
 994
 995 #else
 996
 997     wxUnusedVar(file1);
 998     wxUnusedVar(file2);
 999     wxUnusedVar(file3);
1000     return false;
1001
1002 #endif
1003 }
1004
1005 // Copy files
1006 bool
1007 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
1008 {
1009 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1010     // CopyFile() copies file attributes and modification time too, so use it
1011     // instead of our code if available
1012     //
1013     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1014     if ( !::CopyFile(file1, file2, !overwrite) )
1015     {
1016         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1017                       file1.c_str(), file2.c_str());
1018
1019         return false;
1020     }
1021 #elif defined(__OS2__)
1022     if ( ::DosCopy((PSZ)file1.c_str(), (PSZ)file2.c_str(), overwrite ? DCPY_EXISTING : 0) != 0 )
1023         return false;
1024 #elif defined(__PALMOS__)
1025     // TODO with http://www.palmos.com/dev/support/docs/protein_books/Memory_Databases_Files/
1026     return false;
1027 #elif wxUSE_FILE // !Win32
1028
1029     wxStructStat fbuf;
1030     // get permissions of file1
1031     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1032     {
1033         // the file probably doesn't exist or we haven't the rights to read
1034         // from it anyhow
1035         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1036                       file1.c_str());
1037         return false;
1038     }
1039
1040     // open file1 for reading
1041     wxFile fileIn(file1, wxFile::read);
1042     if ( !fileIn.IsOpened() )
1043         return false;
1044
1045     // remove file2, if it exists. This is needed for creating
1046     // file2 with the correct permissions in the next step
1047     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1048     {
1049         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1050                       file2.c_str());
1051         return false;
1052     }
1053
1054     // reset the umask as we want to create the file with exactly the same
1055     // permissions as the original one
1056     wxCHANGE_UMASK(0);
1057
1058     // create file2 with the same permissions than file1 and open it for
1059     // writing
1060
1061     wxFile fileOut;
1062     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1063         return false;
1064
1065     // copy contents of file1 to file2
1066     char buf[4096];
1067     size_t count;
1068     for ( ;; )
1069     {
1070         count = fileIn.Read(buf, WXSIZEOF(buf));
1071         if ( fileIn.Error() )
1072             return false;
1073
1074         // end of file?
1075         if ( !count )
1076             break;
1077
1078         if ( fileOut.Write(buf, count) < count )
1079             return false;
1080     }
1081
1082     // we can expect fileIn to be closed successfully, but we should ensure
1083     // that fileOut was closed as some write errors (disk full) might not be
1084     // detected before doing this
1085     if ( !fileIn.Close() || !fileOut.Close() )
1086         return false;
1087
1088 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1089     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1090     // however
1091     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1092     {
1093         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1094                       file2.c_str());
1095         return false;
1096     }
1097 #endif // OS/2 || Mac
1098
1099 #else // !Win32 && ! wxUSE_FILE
1100
1101     // impossible to simulate with wxWidgets API
1102     wxUnusedVar(file1);
1103     wxUnusedVar(file2);
1104     wxUnusedVar(overwrite);
1105     return false;
1106
1107 #endif // __WXMSW__ && __WIN32__
1108
1109     return true;
1110 }
1111
1112 bool
1113 wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite)
1114 {
1115     if ( !overwrite && wxFileExists(file2) )
1116     {
1117         wxLogSysError
1118         (
1119             _("Failed to rename the file '%s' to '%s' because the destination file already exists."),
1120             file1.c_str(), file2.c_str()
1121         );
1122
1123         return false;
1124     }
1125
1126 #if !defined(__WXWINCE__) && !defined(__WXPALMOS__)
1127     // Normal system call
1128   if ( wxRename (file1, file2) == 0 )
1129     return true;
1130 #endif
1131
1132   // Try to copy
1133   if (wxCopyFile(file1, file2, overwrite)) {
1134     wxRemoveFile(file1);
1135     return true;
1136   }
1137   // Give up
1138   return false;
1139 }
1140
1141 bool wxRemoveFile(const wxString& file)
1142 {
1143 #if defined(__VISUALC__) \
1144  || defined(__BORLANDC__) \
1145  || defined(__WATCOMC__) \
1146  || defined(__DMC__) \
1147  || defined(__GNUWIN32__) \
1148  || (defined(__MWERKS__) && defined(__MSL__))
1149     int res = wxRemove(file);
1150 #elif defined(__WXMAC__)
1151     int res = unlink(wxFNCONV(file));
1152 #elif defined(__WXPALMOS__)
1153     int res = 1;
1154     // TODO with VFSFileDelete()
1155 #else
1156     int res = unlink(OS_FILENAME(file));
1157 #endif
1158
1159     return res == 0;
1160 }
1161
1162 bool wxMkdir(const wxString& dir, int perm)
1163 {
1164 #if defined(__WXPALMOS__)
1165     return false;
1166 #elif defined(__WXMAC__) && !defined(__UNIX__)
1167     return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1168 #else // !Mac
1169     const wxChar *dirname = dir.c_str();
1170
1171     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1172     // for the GNU compiler
1173 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1174   #if defined(MSVCRT)
1175     wxUnusedVar(perm);
1176     if ( mkdir(wxFNCONV(dirname)) != 0 )
1177   #else
1178     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1179   #endif
1180 #elif defined(__OS2__)
1181     wxUnusedVar(perm);
1182     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1183 #elif defined(__DOS__)
1184   #if defined(__WATCOMC__)
1185     (void)perm;
1186     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1187   #elif defined(__DJGPP__)
1188     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1189   #else
1190     #error "Unsupported DOS compiler!"
1191   #endif
1192 #else  // !MSW, !DOS and !OS/2 VAC++
1193     wxUnusedVar(perm);
1194 #ifdef __WXWINCE__
1195     if ( !CreateDirectory(dirname, NULL) )
1196 #else
1197     if ( wxMkDir(dir.fn_str()) != 0 )
1198 #endif
1199 #endif // !MSW/MSW
1200     {
1201         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1202
1203         return false;
1204     }
1205
1206     return true;
1207 #endif // Mac/!Mac
1208 }
1209
1210 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1211 {
1212 #if defined(__VMS__)
1213     return false; //to be changed since rmdir exists in VMS7.x
1214 #elif defined(__OS2__)
1215     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1216 #elif defined(__WXWINCE__)
1217     return (CreateDirectory(dir, NULL) != 0);
1218 #elif defined(__WXPALMOS__)
1219     // TODO with VFSFileRename()
1220     return false;
1221 #else
1222     return (wxRmDir(OS_FILENAME(dir)) == 0);
1223 #endif
1224 }
1225
1226 // does the path exists? (may have or not '/' or '\\' at the end)
1227 bool wxDirExists(const wxChar *pszPathName)
1228 {
1229     wxString strPath(pszPathName);
1230
1231 #if defined(__WINDOWS__) || defined(__OS2__)
1232     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1233     // so remove all trailing backslashes from the path - but don't do this for
1234     // the pathes "d:\" (which are different from "d:") nor for just "\"
1235     while ( wxEndsWithPathSeparator(strPath) )
1236     {
1237         size_t len = strPath.length();
1238         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1239             break;
1240
1241         strPath.Truncate(len - 1);
1242     }
1243 #endif // __WINDOWS__
1244
1245 #ifdef __OS2__
1246     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1247     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1248         strPath << _T('.');
1249 #endif
1250
1251 #if defined(__WXPALMOS__)
1252     return false;
1253 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
1254     // stat() can't cope with network paths
1255     DWORD ret = ::GetFileAttributes(strPath);
1256
1257     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1258 #elif defined(__OS2__)
1259     FILESTATUS3 Info = {{0}};
1260     APIRET rc = ::DosQueryPathInfo((PSZ)(WXSTRINGCAST strPath), FIL_STANDARD,
1261                                    (void*) &Info, sizeof(FILESTATUS3));
1262
1263     return ((rc == NO_ERROR) && (Info.attrFile & FILE_DIRECTORY)) ||
1264       (rc == ERROR_SHARING_VIOLATION);
1265     // If we got a sharing violation, there must be something with this name.
1266 #else // !__WIN32__
1267
1268     wxStructStat st;
1269 #ifndef __VISAGECPP__
1270     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1271 #else
1272     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1273     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1274 #endif
1275
1276 #endif // __WIN32__/!__WIN32__
1277 }
1278
1279 // Get a temporary filename, opening and closing the file.
1280 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1281 {
1282 #if wxUSE_FILE
1283     wxString filename = wxFileName::CreateTempFileName(prefix);
1284     if ( filename.empty() )
1285         return NULL;
1286
1287     if ( buf )
1288         wxStrcpy(buf, filename);
1289     else
1290         buf = MYcopystring(filename);
1291
1292     return buf;
1293 #else
1294     wxUnusedVar(prefix);
1295     wxUnusedVar(buf);
1296     // wxFileName::CreateTempFileName needs wxFile class enabled
1297     return NULL;
1298 #endif
1299 }
1300
1301 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1302 {
1303     buf = wxGetTempFileName(prefix);
1304
1305     return !buf.empty();
1306 }
1307
1308 // Get first file name matching given wild card.
1309
1310 static wxDir *gs_dir = NULL;
1311 static wxString gs_dirPath;
1312
1313 wxString wxFindFirstFile(const wxChar *spec, int flags)
1314 {
1315     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1316     if ( gs_dirPath.empty() )
1317         gs_dirPath = wxT(".");
1318     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1319         gs_dirPath << wxFILE_SEP_PATH;
1320
1321     if (gs_dir)
1322         delete gs_dir;
1323     gs_dir = new wxDir(gs_dirPath);
1324
1325     if ( !gs_dir->IsOpened() )
1326     {
1327         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1328         return wxEmptyString;
1329     }
1330
1331     int dirFlags;
1332     switch (flags)
1333     {
1334         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1335         case wxFILE: dirFlags = wxDIR_FILES; break;
1336         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1337     }
1338
1339     wxString result;
1340     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1341     if ( result.empty() )
1342     {
1343         wxDELETE(gs_dir);
1344         return result;
1345     }
1346
1347     return gs_dirPath + result;
1348 }
1349
1350 wxString wxFindNextFile()
1351 {
1352     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1353
1354     wxString result;
1355     gs_dir->GetNext(&result);
1356
1357     if ( result.empty() )
1358     {
1359         wxDELETE(gs_dir);
1360         return result;
1361     }
1362
1363     return gs_dirPath + result;
1364 }
1365
1366
1367 // Get current working directory.
1368 // If buf is NULL, allocates space using new, else copies into buf.
1369 // wxGetWorkingDirectory() is obsolete, use wxGetCwd()
1370 // wxDoGetCwd() is their common core to be moved
1371 // to wxGetCwd() once wxGetWorkingDirectory() will be removed.
1372 // Do not expose wxDoGetCwd in headers!
1373
1374 wxChar *wxDoGetCwd(wxChar *buf, int sz)
1375 {
1376 #if defined(__WXPALMOS__)
1377     // TODO
1378     if(buf && sz>0) buf[0] = _T('\0');
1379     return buf;
1380 #elif defined(__WXWINCE__)
1381     // TODO
1382     if(buf && sz>0) buf[0] = _T('\0');
1383     return buf;
1384 #else
1385     if ( !buf )
1386     {
1387         buf = new wxChar[sz + 1];
1388     }
1389
1390     bool ok wxDUMMY_INITIALIZE(false);
1391
1392     // for the compilers which have Unicode version of _getcwd(), call it
1393     // directly, for the others call the ANSI version and do the translation
1394 #if !wxUSE_UNICODE
1395     #define cbuf buf
1396 #else // wxUSE_UNICODE
1397     bool needsANSI = true;
1398
1399     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1400         char cbuf[_MAXPATHLEN];
1401     #endif
1402
1403     #ifdef HAVE_WGETCWD
1404         #if wxUSE_UNICODE_MSLU
1405             if ( wxGetOsVersion() != wxWIN95 )
1406         #else
1407             char *cbuf = NULL; // never really used because needsANSI will always be false
1408         #endif
1409             {
1410                 ok = _wgetcwd(buf, sz) != NULL;
1411                 needsANSI = false;
1412             }
1413     #endif
1414
1415     if ( needsANSI )
1416 #endif // wxUSE_UNICODE
1417     {
1418     #if defined(_MSC_VER) || defined(__MINGW32__)
1419         ok = _getcwd(cbuf, sz) != NULL;
1420     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1421         char lbuf[1024] ;
1422         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1423         {
1424             wxString res( lbuf , *wxConvCurrent ) ;
1425             wxStrcpy( buf , res ) ;
1426             ok = true;
1427         }
1428         else
1429             ok = false ;
1430     #elif defined(__OS2__)
1431         APIRET rc;
1432         ULONG ulDriveNum = 0;
1433         ULONG ulDriveMap = 0;
1434         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1435         ok = rc == 0;
1436         if (ok)
1437         {
1438             sz -= 3;
1439             rc = ::DosQueryCurrentDir( 0 // current drive
1440                                       ,cbuf + 3
1441                                       ,(PULONG)&sz
1442                                      );
1443             cbuf[0] = char('A' + (ulDriveNum - 1));
1444             cbuf[1] = ':';
1445             cbuf[2] = '\\';
1446             ok = rc == 0;
1447         }
1448     #else // !Win32/VC++ !Mac !OS2
1449         ok = getcwd(cbuf, sz) != NULL;
1450     #endif // platform
1451
1452     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1453         // finally convert the result to Unicode if needed
1454         wxConvFile.MB2WC(buf, cbuf, sz);
1455     #endif // wxUSE_UNICODE
1456     }
1457
1458     if ( !ok )
1459     {
1460         wxLogSysError(_("Failed to get the working directory"));
1461
1462         // VZ: the old code used to return "." on error which didn't make any
1463         //     sense at all to me - empty string is a better error indicator
1464         //     (NULL might be even better but I'm afraid this could lead to
1465         //     problems with the old code assuming the return is never NULL)
1466         buf[0] = _T('\0');
1467     }
1468     else // ok, but we might need to massage the path into the right format
1469     {
1470 #ifdef __DJGPP__
1471         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1472         //     with / deliminers. We don't like that.
1473         for (wxChar *ch = buf; *ch; ch++)
1474         {
1475             if (*ch == wxT('/'))
1476                 *ch = wxT('\\');
1477         }
1478 #endif // __DJGPP__
1479
1480 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1481 //      he needs Unix as opposed to Win32 pathnames
1482 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1483         // another example of DOS/Unix mix (Cygwin)
1484         wxString pathUnix = buf;
1485 #if wxUSE_UNICODE
1486         char bufA[_MAXPATHLEN];
1487         cygwin_conv_to_full_win32_path(pathUnix.mb_str(wxConvFile), bufA);
1488         wxConvFile.MB2WC(buf, bufA, sz);
1489 #else
1490         cygwin_conv_to_full_win32_path(pathUnix, buf);
1491 #endif // wxUSE_UNICODE
1492 #endif // __CYGWIN__
1493     }
1494
1495     return buf;
1496
1497 #if !wxUSE_UNICODE
1498     #undef cbuf
1499 #endif
1500
1501 #endif
1502     // __WXWINCE__
1503 }
1504
1505 #if WXWIN_COMPATIBILITY_2_6
1506 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1507 {
1508     return wxDoGetCwd(buf,sz);
1509 }
1510 #endif // WXWIN_COMPATIBILITY_2_6
1511
1512 wxString wxGetCwd()
1513 {
1514     wxString str;
1515     wxDoGetCwd(wxStringBuffer(str, _MAXPATHLEN), _MAXPATHLEN);
1516     return str;
1517 }
1518
1519 bool wxSetWorkingDirectory(const wxString& d)
1520 {
1521 #if defined(__OS2__)
1522     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1523 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1524     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1525 #elif defined(__WINDOWS__)
1526
1527 #ifdef __WIN32__
1528 #ifdef __WXWINCE__
1529     // No equivalent in WinCE
1530     wxUnusedVar(d);
1531     return false;
1532 #else
1533     return (bool)(SetCurrentDirectory(d) != 0);
1534 #endif
1535 #else
1536     // Must change drive, too.
1537     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1538     if (isDriveSpec)
1539     {
1540         wxChar firstChar = d[0];
1541
1542         // To upper case
1543         if (firstChar > 90)
1544             firstChar = firstChar - 32;
1545
1546         // To a drive number
1547         unsigned int driveNo = firstChar - 64;
1548         if (driveNo > 0)
1549         {
1550             unsigned int noDrives;
1551             _dos_setdrive(driveNo, &noDrives);
1552         }
1553     }
1554     bool success = (chdir(WXSTRINGCAST d) == 0);
1555
1556     return success;
1557 #endif
1558
1559 #endif
1560 }
1561
1562 // Get the OS directory if appropriate (such as the Windows directory).
1563 // On non-Windows platform, probably just return the empty string.
1564 wxString wxGetOSDirectory()
1565 {
1566 #ifdef __WXWINCE__
1567     return wxString(wxT("\\Windows"));
1568 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1569     wxChar buf[256];
1570     GetWindowsDirectory(buf, 256);
1571     return wxString(buf);
1572 #elif defined(__WXMAC__)
1573     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1574 #else
1575     return wxEmptyString;
1576 #endif
1577 }
1578
1579 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1580 {
1581     size_t len = wxStrlen(pszFileName);
1582
1583     return len && wxIsPathSeparator(pszFileName[len - 1]);
1584 }
1585
1586 // find a file in a list of directories, returns false if not found
1587 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1588 {
1589     // we assume that it's not empty
1590     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1591                  _T("empty file name in wxFindFileInPath"));
1592
1593     // skip path separator in the beginning of the file name if present
1594     if ( wxIsPathSeparator(*pszFile) )
1595         pszFile++;
1596
1597     // copy the path (strtok will modify it)
1598     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1599     wxStrcpy(szPath, pszPath);
1600
1601     wxString strFile;
1602     wxChar *pc, *save_ptr;
1603     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1604           pc != NULL;
1605           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1606     {
1607         // search for the file in this directory
1608         strFile = pc;
1609         if ( !wxEndsWithPathSeparator(pc) )
1610             strFile += wxFILE_SEP_PATH;
1611         strFile += pszFile;
1612
1613         if ( wxFileExists(strFile) ) {
1614             *pStr = strFile;
1615             break;
1616         }
1617     }
1618
1619     // suppress warning about unused variable save_ptr when wxStrtok() is a
1620     // macro which throws away its third argument
1621     save_ptr = pc;
1622
1623     delete [] szPath;
1624
1625     return pc != NULL;  // if true => we breaked from the loop
1626 }
1627
1628 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1629                              wxString *pstrPath,
1630                              wxString *pstrName,
1631                              wxString *pstrExt)
1632 {
1633     // it can be empty, but it shouldn't be NULL
1634     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1635
1636     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1637 }
1638
1639 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1640 {
1641     wxDateTime mtime;
1642     if ( !wxFileName(filename).GetTimes(NULL, &mtime, NULL) )
1643         return (time_t)-1;
1644
1645     return mtime.GetTicks();
1646 }
1647
1648
1649 // Parses the filterStr, returning the number of filters.
1650 // Returns 0 if none or if there's a problem.
1651 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpeg"
1652
1653 int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr,
1654                                            wxArrayString& descriptions,
1655                                            wxArrayString& filters)
1656 {
1657     descriptions.Clear();
1658     filters.Clear();
1659
1660     wxString str(filterStr);
1661
1662     wxString description, filter;
1663     int pos = 0;
1664     while( pos != wxNOT_FOUND )
1665     {
1666         pos = str.Find(wxT('|'));
1667         if ( pos == wxNOT_FOUND )
1668         {
1669             // if there are no '|'s at all in the string just take the entire
1670             // string as filter and make description empty for later autocompletion
1671             if ( filters.IsEmpty() )
1672             {
1673                 descriptions.Add(wxEmptyString);
1674                 filters.Add(filterStr);
1675             }
1676             else
1677             {
1678                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1679             }
1680
1681             break;
1682         }
1683
1684         description = str.Left(pos);
1685         str = str.Mid(pos + 1);
1686         pos = str.Find(wxT('|'));
1687         if ( pos == wxNOT_FOUND )
1688         {
1689             filter = str;
1690         }
1691         else
1692         {
1693             filter = str.Left(pos);
1694             str = str.Mid(pos + 1);
1695         }
1696
1697         descriptions.Add(description);
1698         filters.Add(filter);
1699     }
1700
1701 #if defined(__WXMOTIF__)
1702     // split it so there is one wildcard per entry
1703     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1704     {
1705         pos = filters[i].Find(wxT(';'));
1706         if (pos != wxNOT_FOUND)
1707         {
1708             // first split only filters
1709             descriptions.Insert(descriptions[i],i+1);
1710             filters.Insert(filters[i].Mid(pos+1),i+1);
1711             filters[i]=filters[i].Left(pos);
1712
1713             // autoreplace new filter in description with pattern:
1714             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1715             // cause split into:
1716             //     C/C++ Files(*.cpp)|*.cpp
1717             //     C/C++ Files(*.c;*.h)|*.c;*.h
1718             // and next iteration cause another split into:
1719             //     C/C++ Files(*.cpp)|*.cpp
1720             //     C/C++ Files(*.c)|*.c
1721             //     C/C++ Files(*.h)|*.h
1722             for ( size_t k=i;k<i+2;k++ )
1723             {
1724                 pos = descriptions[k].Find(filters[k]);
1725                 if (pos != wxNOT_FOUND)
1726                 {
1727                     wxString before = descriptions[k].Left(pos);
1728                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1729                     pos = before.Find(_T('('),true);
1730                     if (pos>before.Find(_T(')'),true))
1731                     {
1732                         before = before.Left(pos+1);
1733                         before << filters[k];
1734                         pos = after.Find(_T(')'));
1735                         int pos1 = after.Find(_T('('));
1736                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1737                         {
1738                             before << after.Mid(pos);
1739                             descriptions[k] = before;
1740                         }
1741                     }
1742                 }
1743             }
1744         }
1745     }
1746 #endif
1747
1748     // autocompletion
1749     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1750     {
1751         if ( descriptions[j].empty() && !filters[j].empty() )
1752         {
1753             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1754         }
1755     }
1756
1757     return filters.GetCount();
1758 }
1759
1760
1761 //------------------------------------------------------------------------
1762 // wild character routines
1763 //------------------------------------------------------------------------
1764
1765 bool wxIsWild( const wxString& pattern )
1766 {
1767     wxString tmp = pattern;
1768     wxChar *pat = WXSTRINGCAST(tmp);
1769     while (*pat)
1770     {
1771         switch (*pat++)
1772         {
1773         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1774             return true;
1775         case wxT('\\'):
1776             if (!*pat++)
1777                 return false;
1778         }
1779     }
1780     return false;
1781 }
1782
1783 /*
1784 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1785 *
1786 * The match procedure is public domain code (from ircII's reg.c)
1787 * but modified to suit our tastes (RN: No "%" syntax I guess)
1788 */
1789
1790 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1791 {
1792     if (text.empty())
1793     {
1794         /* Match if both are empty. */
1795         return pat.empty();
1796     }
1797
1798     const wxChar *m = pat.c_str(),
1799     *n = text.c_str(),
1800     *ma = NULL,
1801     *na = NULL;
1802     int just = 0,
1803     acount = 0,
1804     count = 0;
1805
1806     if (dot_special && (*n == wxT('.')))
1807     {
1808         /* Never match so that hidden Unix files
1809          * are never found. */
1810         return false;
1811     }
1812
1813     for (;;)
1814     {
1815         if (*m == wxT('*'))
1816         {
1817             ma = ++m;
1818             na = n;
1819             just = 1;
1820             acount = count;
1821         }
1822         else if (*m == wxT('?'))
1823         {
1824             m++;
1825             if (!*n++)
1826                 return false;
1827         }
1828         else
1829         {
1830             if (*m == wxT('\\'))
1831             {
1832                 m++;
1833                 /* Quoting "nothing" is a bad thing */
1834                 if (!*m)
1835                     return false;
1836             }
1837             if (!*m)
1838             {
1839                 /*
1840                 * If we are out of both strings or we just
1841                 * saw a wildcard, then we can say we have a
1842                 * match
1843                 */
1844                 if (!*n)
1845                     return true;
1846                 if (just)
1847                     return true;
1848                 just = 0;
1849                 goto not_matched;
1850             }
1851             /*
1852             * We could check for *n == NULL at this point, but
1853             * since it's more common to have a character there,
1854             * check to see if they match first (m and n) and
1855             * then if they don't match, THEN we can check for
1856             * the NULL of n
1857             */
1858             just = 0;
1859             if (*m == *n)
1860             {
1861                 m++;
1862                 count++;
1863                 n++;
1864             }
1865             else
1866             {
1867
1868                 not_matched:
1869
1870                 /*
1871                 * If there are no more characters in the
1872                 * string, but we still need to find another
1873                 * character (*m != NULL), then it will be
1874                 * impossible to match it
1875                 */
1876                 if (!*n)
1877                     return false;
1878
1879                 if (ma)
1880                 {
1881                     m = ma;
1882                     n = ++na;
1883                     count = acount;
1884                 }
1885                 else
1886                     return false;
1887             }
1888         }
1889     }
1890 }
1891
1892 // Return the type of an open file
1893 //
1894 // Some file types on some platforms seem seekable but in fact are not.
1895 // The main use of this function is to allow such cases to be detected
1896 // (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
1897 //
1898 // This is important for the archive streams, which benefit greatly from
1899 // being able to seek on a stream, but which will produce corrupt archives
1900 // if they unknowingly seek on a non-seekable stream.
1901 //
1902 // wxFILE_KIND_DISK is a good catch all return value, since other values
1903 // disable features of the archive streams. Some other value must be returned
1904 // for a file type that appears seekable but isn't.
1905 //
1906 // Known examples:
1907 //   *  Pipes on Windows
1908 //   *  Files on VMS with a record format other than StreamLF
1909 //
1910 wxFileKind wxGetFileKind(int fd)
1911 {
1912 #if defined __WXMSW__ && !defined __WXWINCE__ && defined wxGetOSFHandle
1913     switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
1914     {
1915         case FILE_TYPE_CHAR:
1916             return wxFILE_KIND_TERMINAL;
1917         case FILE_TYPE_DISK:
1918             return wxFILE_KIND_DISK;
1919         case FILE_TYPE_PIPE:
1920             return wxFILE_KIND_PIPE;
1921     }
1922
1923     return wxFILE_KIND_UNKNOWN;
1924
1925 #elif defined(__UNIX__)
1926     if (isatty(fd))
1927         return wxFILE_KIND_TERMINAL;
1928
1929     struct stat st;
1930     fstat(fd, &st);
1931
1932     if (S_ISFIFO(st.st_mode))
1933         return wxFILE_KIND_PIPE;
1934     if (!S_ISREG(st.st_mode))
1935         return wxFILE_KIND_UNKNOWN;
1936
1937     #if defined(__VMS__)
1938         if (st.st_fab_rfm != FAB$C_STMLF)
1939             return wxFILE_KIND_UNKNOWN;
1940     #endif
1941
1942     return wxFILE_KIND_DISK;
1943
1944 #else
1945     #define wxFILEKIND_STUB
1946     (void)fd;
1947     return wxFILE_KIND_DISK;
1948 #endif
1949 }
1950
1951 wxFileKind wxGetFileKind(FILE *fp)
1952 {
1953     // Note: The watcom rtl dll doesn't have fileno (the static lib does).
1954     //       Should be fixed in version 1.4.
1955 #if defined(wxFILEKIND_STUB) || wxONLY_WATCOM_EARLIER_THAN(1,4)
1956     (void)fp;
1957     return wxFILE_KIND_DISK;
1958 #else
1959     return fp ? wxGetFileKind(fileno(fp)) : wxFILE_KIND_UNKNOWN;
1960 #endif
1961 }
1962
1963 #ifdef __VISUALC__
1964     #pragma warning(default:4706)   // assignment within conditional expression
1965 #endif // VC++