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 #endif
  30
  31 #include "wx/utils.h"
  32 #include "wx/file.h" // This does include filefn.h
  33 #include "wx/filename.h"
  34 #include "wx/dir.h"
  35
  36 // there are just too many of those...
  37 #ifdef __VISUALC__
  38     #pragma warning(disable:4706)   // assignment within conditional expression
  39 #endif // VC++
  40
  41 #include <ctype.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #if !wxONLY_WATCOM_EARLIER_THAN(1,4)
  46     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  47         #include <errno.h>
  48     #endif
  49 #endif
  50
  51 #if defined(__WXMAC__)
  52     #include  "wx/mac/private.h"  // includes mac headers
  53 #endif
  54
  55 #include "wx/log.h"
  56
  57 #ifdef __WINDOWS__
  58     #include "wx/msw/private.h"
  59     #include "wx/msw/mslu.h"
  60
  61     // sys/cygwin.h is needed for cygwin_conv_to_full_win32_path()
  62     //
  63     // note that it must be included after <windows.h>
  64     #ifdef __GNUWIN32__
  65         #ifdef __CYGWIN__
  66             #include <sys/cygwin.h>
  67         #endif
  68     #endif // __GNUWIN32__
  69
  70     // io.h is needed for _get_osfhandle()
  71     // Already included by filefn.h for many Windows compilers
  72     #if defined __MWERKS__ || defined __CYGWIN__
  73         #include <io.h>
  74     #endif
  75 #endif // __WINDOWS__
  76
  77 #if defined(__VMS__)
  78     #include <fab.h>
  79 #endif
  80
  81 // TODO: Borland probably has _wgetcwd as well?
  82 #ifdef _MSC_VER
  83     #define HAVE_WGETCWD
  84 #endif
  85
  86 // ----------------------------------------------------------------------------
  87 // constants
  88 // ----------------------------------------------------------------------------
  89
  90 #ifndef _MAXPATHLEN
  91     #define _MAXPATHLEN 1024
  92 #endif
  93
  94 #ifdef __WXMAC__
  95 #    include "MoreFilesX.h"
  96 #endif
  97
  98 // ----------------------------------------------------------------------------
  99 // private globals
 100 // ----------------------------------------------------------------------------
 101
 102 // MT-FIXME: get rid of this horror and all code using it
 103 static wxChar wxFileFunctionsBuffer[4*_MAXPATHLEN];
 104
 105 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 106 //
 107 // VisualAge C++ V4.0 cannot have any external linkage const decs
 108 // in headers included by more than one primary source
 109 //
 110 const int wxInvalidOffset = -1;
 111 #endif
 112
 113 // ----------------------------------------------------------------------------
 114 // macros
 115 // ----------------------------------------------------------------------------
 116
 117 // we need to translate Mac filenames before passing them to OS functions
 118 #define OS_FILENAME(s) (s.fn_str())
 119
 120 // ============================================================================
 121 // implementation
 122 // ============================================================================
 123
 124 #ifdef wxNEED_WX_UNISTD_H
 125
 126 WXDLLEXPORT int wxStat( const wxChar *file_name, wxStructStat *buf )
 127 {
 128     return stat( wxConvFile.cWX2MB( file_name ), buf );
 129 }
 130
 131 WXDLLEXPORT int wxAccess( const wxChar *pathname, int mode )
 132 {
 133     return access( wxConvFile.cWX2MB( pathname ), mode );
 134 }
 135
 136 WXDLLEXPORT int wxOpen( const wxChar *pathname, int flags, mode_t mode )
 137 {
 138     return open( wxConvFile.cWX2MB( pathname ), flags, mode );
 139 }
 140
 141 #endif
 142    // wxNEED_WX_UNISTD_H
 143
 144 // ----------------------------------------------------------------------------
 145 // wxPathList
 146 // ----------------------------------------------------------------------------
 147
 148 // IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
 149
 150 static inline wxChar* MYcopystring(const wxString& s)
 151 {
 152     wxChar* copy = new wxChar[s.length() + 1];
 153     return wxStrcpy(copy, s.c_str());
 154 }
 155
 156 static inline wxChar* MYcopystring(const wxChar* s)
 157 {
 158     wxChar* copy = new wxChar[wxStrlen(s) + 1];
 159     return wxStrcpy(copy, s);
 160 }
 161
 162 void wxPathList::Add (const wxString& path)
 163 {
 164     wxStringList::Add (WXSTRINGCAST path);
 165 }
 166
 167 // Add paths e.g. from the PATH environment variable
 168 void wxPathList::AddEnvList (const wxString& WXUNUSED_IN_WINCE(envVariable))
 169 {
 170     // No environment variables on WinCE
 171 #ifndef __WXWINCE__
 172     static const wxChar PATH_TOKS[] =
 173 #if defined(__WINDOWS__) || defined(__OS2__)
 174         /*
 175         The space has been removed from the tokenizers, otherwise a
 176         path such as "C:\Program Files" would be split into 2 paths:
 177         "C:\Program" and "Files"
 178         */
 179 //        wxT(" ;"); // Don't separate with colon in DOS (used for drive)
 180         wxT(";"); // Don't separate with colon in DOS (used for drive)
 181 #else
 182         wxT(" :;");
 183 #endif
 184
 185     wxString val ;
 186     if (wxGetEnv (WXSTRINGCAST envVariable, &val))
 187     {
 188         wxChar *s = MYcopystring (val);
 189         wxChar *save_ptr, *token = wxStrtok (s, PATH_TOKS, &save_ptr);
 190
 191         if (token)
 192         {
 193             Add(token);
 194             while (token)
 195             {
 196                 if ( (token = wxStrtok ((wxChar *) NULL, PATH_TOKS, &save_ptr))
 197                     != NULL )
 198                 {
 199                     Add(token);
 200                 }
 201             }
 202         }
 203
 204         // suppress warning about unused variable save_ptr when wxStrtok() is a
 205         // macro which throws away its third argument
 206         save_ptr = token;
 207
 208         delete [] s;
 209     }
 210 #endif // !__WXWINCE__
 211 }
 212
 213 // Given a full filename (with path), ensure that that file can
 214 // be accessed again USING FILENAME ONLY by adding the path
 215 // to the list if not already there.
 216 void wxPathList::EnsureFileAccessible (const wxString& path)
 217 {
 218     wxString path_only(wxPathOnly(path));
 219     if ( !path_only.empty() )
 220     {
 221         if ( !Member(path_only) )
 222             Add(path_only);
 223     }
 224 }
 225
 226 bool wxPathList::Member (const wxString& path)
 227 {
 228   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 229   {
 230       wxString path2( node->GetData() );
 231       if (
 232 #if defined(__WINDOWS__) || defined(__OS2__) || defined(__VMS__) || defined(__WXMAC__)
 233       // Case INDEPENDENT
 234           path.CompareTo (path2, wxString::ignoreCase) == 0
 235 #else
 236       // Case sensitive File System
 237           path.CompareTo (path2) == 0
 238 #endif
 239         )
 240         return true;
 241   }
 242   return false;
 243 }
 244
 245 wxString wxPathList::FindValidPath (const wxString& file)
 246 {
 247   wxExpandPath(wxFileFunctionsBuffer, file);
 248
 249   wxChar buf[_MAXPATHLEN];
 250   wxStrcpy(buf, wxFileFunctionsBuffer);
 251
 252   wxChar *filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 253
 254   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 255     {
 256       const wxString path(node->GetData());
 257       wxStrcpy (wxFileFunctionsBuffer, path);
 258       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 259       if (ch != wxT('\\') && ch != wxT('/'))
 260         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 261       wxStrcat (wxFileFunctionsBuffer, filename);
 262 #ifdef __WINDOWS__
 263       wxUnix2DosFilename (wxFileFunctionsBuffer);
 264 #endif
 265       if (wxFileExists (wxFileFunctionsBuffer))
 266       {
 267         return wxString(wxFileFunctionsBuffer);        // Found!
 268       }
 269     }                                // for()
 270
 271   return wxEmptyString;                    // Not found
 272 }
 273
 274 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 275 {
 276     wxString f = FindValidPath(file);
 277     if ( f.empty() || wxIsAbsolutePath(f) )
 278         return f;
 279
 280     wxString buf = ::wxGetCwd();
 281
 282     if ( !wxEndsWithPathSeparator(buf) )
 283     {
 284         buf += wxFILE_SEP_PATH;
 285     }
 286     buf += f;
 287
 288     return buf;
 289 }
 290
 291 bool
 292 wxFileExists (const wxString& filename)
 293 {
 294 #if defined(__WXPALMOS__)
 295     return false;
 296 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 297     // we must use GetFileAttributes() instead of the ANSI C functions because
 298     // it can cope with network (UNC) paths unlike them
 299     DWORD ret = ::GetFileAttributes(filename);
 300
 301     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 302 #else // !__WIN32__
 303     wxStructStat st;
 304 #ifndef wxNEED_WX_UNISTD_H
 305     return (wxStat( filename.fn_str() , &st) == 0 && (st.st_mode & S_IFREG))
 306 #ifdef __OS2__
 307       || (errno == EACCES) // if access is denied something with that name
 308                             // exists and is opened in exclusive mode.
 309 #endif
 310       ;
 311 #else
 312     return wxStat( filename , &st) == 0 && (st.st_mode & S_IFREG);
 313 #endif
 314 #endif // __WIN32__/!__WIN32__
 315 }
 316
 317 bool
 318 wxIsAbsolutePath (const wxString& filename)
 319 {
 320     if (!filename.empty())
 321     {
 322 #if defined(__WXMAC__) && !defined(__DARWIN__)
 323         // Classic or Carbon CodeWarrior like
 324         // Carbon with Apple DevTools is Unix like
 325
 326         // This seems wrong to me, but there is no fix. since
 327         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 328         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 329         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 330             return true ;
 331 #else
 332         // Unix like or Windows
 333         if (filename[0] == wxT('/'))
 334             return true;
 335 #endif
 336 #ifdef __VMS__
 337         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 338             return true;
 339 #endif
 340 #if defined(__WINDOWS__) || defined(__OS2__)
 341         // MSDOS like
 342         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 343             return true;
 344 #endif
 345     }
 346     return false ;
 347 }
 348
 349 /*
 350  * Strip off any extension (dot something) from end of file,
 351  * IF one exists. Inserts zero into buffer.
 352  *
 353  */
 354
 355 void wxStripExtension(wxChar *buffer)
 356 {
 357     int len = wxStrlen(buffer);
 358     int i = len-1;
 359     while (i > 0)
 360     {
 361         if (buffer[i] == wxT('.'))
 362         {
 363             buffer[i] = 0;
 364             break;
 365         }
 366         i --;
 367     }
 368 }
 369
 370 void wxStripExtension(wxString& buffer)
 371 {
 372     //RN:  Be careful about the handling the case where
 373     //buffer.length() == 0
 374     for(size_t i = buffer.length() - 1; i != wxString::npos; --i)
 375     {
 376         if (buffer.GetChar(i) == wxT('.'))
 377         {
 378           buffer = buffer.Left(i);
 379           break;
 380         }
 381     }
 382 }
 383
 384 // Destructive removal of /./ and /../ stuff
 385 wxChar *wxRealPath (wxChar *path)
 386 {
 387 #ifdef __WXMSW__
 388   static const wxChar SEP = wxT('\\');
 389   wxUnix2DosFilename(path);
 390 #else
 391   static const wxChar SEP = wxT('/');
 392 #endif
 393   if (path[0] && path[1]) {
 394     /* MATTHEW: special case "/./x" */
 395     wxChar *p;
 396     if (path[2] == SEP && path[1] == wxT('.'))
 397       p = &path[0];
 398     else
 399       p = &path[2];
 400     for (; *p; p++)
 401       {
 402         if (*p == SEP)
 403           {
 404             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 405               {
 406                 wxChar *q;
 407                 for (q = p - 1; q >= path && *q != SEP; q--)
 408                 {
 409                     // Empty
 410                 }
 411
 412                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 413                     && (q - 1 <= path || q[-1] != SEP))
 414                   {
 415                     wxStrcpy (q, p + 3);
 416                     if (path[0] == wxT('\0'))
 417                       {
 418                         path[0] = SEP;
 419                         path[1] = wxT('\0');
 420                       }
 421 #if defined(__WXMSW__) || defined(__OS2__)
 422                     /* Check that path[2] is NULL! */
 423                     else if (path[1] == wxT(':') && !path[2])
 424                       {
 425                         path[2] = SEP;
 426                         path[3] = wxT('\0');
 427                       }
 428 #endif
 429                     p = q - 1;
 430                   }
 431               }
 432             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 433               wxStrcpy (p, p + 2);
 434           }
 435       }
 436   }
 437   return path;
 438 }
 439
 440 wxString wxRealPath(const wxString& path)
 441 {
 442     wxChar *buf1=MYcopystring(path);
 443     wxChar *buf2=wxRealPath(buf1);
 444     wxString buf(buf2);
 445     delete [] buf1;
 446     return buf;
 447 }
 448
 449
 450 // Must be destroyed
 451 wxChar *wxCopyAbsolutePath(const wxString& filename)
 452 {
 453     if (filename.empty())
 454         return (wxChar *) NULL;
 455
 456     if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename)))
 457     {
 458         wxString buf = ::wxGetCwd();
 459         wxChar ch = buf.Last();
 460 #ifdef __WXMSW__
 461         if (ch != wxT('\\') && ch != wxT('/'))
 462             buf << wxT("\\");
 463 #else
 464         if (ch != wxT('/'))
 465             buf << wxT("/");
 466 #endif
 467         buf << wxFileFunctionsBuffer;
 468         buf = wxRealPath( buf );
 469         return MYcopystring( buf );
 470     }
 471     return MYcopystring( wxFileFunctionsBuffer );
 472 }
 473
 474 /*-
 475  Handles:
 476    ~/ => home dir
 477    ~user/ => user's home dir
 478    If the environment variable a = "foo" and b = "bar" then:
 479    Unix:
 480         $a        =>        foo
 481         $a$b        =>        foobar
 482         $a.c        =>        foo.c
 483         xxx$a        =>        xxxfoo
 484         ${a}!        =>        foo!
 485         $(b)!        =>        bar!
 486         \$a        =>        \$a
 487    MSDOS:
 488         $a        ==>        $a
 489         $(a)        ==>        foo
 490         $(a)$b        ==>        foo$b
 491         $(a)$(b)==>        foobar
 492         test.$$        ==>        test.$$
 493  */
 494
 495 /* input name in name, pathname output to buf. */
 496
 497 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 498 {
 499     register wxChar *d, *s, *nm;
 500     wxChar          lnm[_MAXPATHLEN];
 501     int             q;
 502
 503     // Some compilers don't like this line.
 504 //    const wxChar    trimchars[] = wxT("\n \t");
 505
 506     wxChar      trimchars[4];
 507     trimchars[0] = wxT('\n');
 508     trimchars[1] = wxT(' ');
 509     trimchars[2] = wxT('\t');
 510     trimchars[3] = 0;
 511
 512 #ifdef __WXMSW__
 513     const wxChar     SEP = wxT('\\');
 514 #else
 515     const wxChar     SEP = wxT('/');
 516 #endif
 517     buf[0] = wxT('\0');
 518     if (name == NULL || *name == wxT('\0'))
 519         return buf;
 520     nm = MYcopystring(name); // Make a scratch copy
 521     wxChar *nm_tmp = nm;
 522
 523     /* Skip leading whitespace and cr */
 524     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 525         nm++;
 526     /* And strip off trailing whitespace and cr */
 527     s = nm + (q = wxStrlen(nm)) - 1;
 528     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 529         *s = wxT('\0');
 530
 531     s = nm;
 532     d = lnm;
 533 #ifdef __WXMSW__
 534     q = FALSE;
 535 #else
 536     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 537 #endif
 538
 539     /* Expand inline environment variables */
 540 #ifdef __VISAGECPP__
 541     while (*d)
 542     {
 543       *d++ = *s;
 544       if(*s == wxT('\\'))
 545       {
 546         *(d - 1) = *++s;
 547         if (*d)
 548         {
 549           s++;
 550           continue;
 551         }
 552         else
 553            break;
 554       }
 555       else
 556 #else
 557     while ((*d++ = *s) != 0) {
 558 #  ifndef __WXMSW__
 559         if (*s == wxT('\\')) {
 560             if ((*(d - 1) = *++s)!=0) {
 561                 s++;
 562                 continue;
 563             } else
 564                 break;
 565         } else
 566 #  endif
 567 #endif
 568             // No env variables on WinCE
 569 #ifndef __WXWINCE__
 570 #ifdef __WXMSW__
 571         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 572 #else
 573         if (*s++ == wxT('$'))
 574 #endif
 575         {
 576             register wxChar  *start = d;
 577             register int     braces = (*s == wxT('{') || *s == wxT('('));
 578             register wxChar  *value;
 579             while ((*d++ = *s) != 0)
 580                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 581                     break;
 582                 else
 583                     s++;
 584             *--d = 0;
 585             value = wxGetenv(braces ? start + 1 : start);
 586             if (value) {
 587                 for ((d = start - 1); (*d++ = *value++) != 0;)
 588                 {
 589                     // Empty
 590                 }
 591
 592                 d--;
 593                 if (braces && *s)
 594                     s++;
 595             }
 596         }
 597 #endif
 598         // __WXWINCE__
 599     }
 600
 601     /* Expand ~ and ~user */
 602     nm = lnm;
 603     if (nm[0] == wxT('~') && !q)
 604     {
 605         /* prefix ~ */
 606         if (nm[1] == SEP || nm[1] == 0)
 607         {        /* ~/filename */
 608         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 609             if ((s = WXSTRINGCAST wxGetUserHome(wxEmptyString)) != NULL) {
 610                 if (*++nm)
 611                     nm++;
 612             }
 613         } else
 614         {                /* ~user/filename */
 615             register wxChar  *nnm;
 616             register wxChar  *home;
 617             for (s = nm; *s && *s != SEP; s++)
 618             {
 619                 // Empty
 620             }
 621             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 622             was_sep = (*s == SEP);
 623             nnm = *s ? s + 1 : s;
 624             *s = 0;
 625         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 626             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL)
 627             {
 628                 if (was_sep) /* replace only if it was there: */
 629                     *s = SEP;
 630                 s = NULL;
 631             }
 632             else
 633             {
 634                 nm = nnm;
 635                 s = home;
 636             }
 637         }
 638     }
 639
 640     d = buf;
 641     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 642         /* Copy home dir */
 643         while (wxT('\0') != (*d++ = *s++))
 644           /* loop */;
 645         // Handle root home
 646         if (d - 1 > buf && *(d - 2) != SEP)
 647           *(d - 1) = SEP;
 648     }
 649     s = nm;
 650     while ((*d++ = *s++) != 0)
 651     {
 652         // Empty
 653     }
 654     delete[] nm_tmp; // clean up alloc
 655     /* Now clean up the buffer */
 656     return wxRealPath(buf);
 657 }
 658
 659 /* Contract Paths to be build upon an environment variable
 660    component:
 661
 662    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 663
 664    The call wxExpandPath can convert these back!
 665  */
 666 wxChar *
 667 wxContractPath (const wxString& filename,
 668                 const wxString& WXUNUSED_IN_WINCE(envname),
 669                 const wxString& user)
 670 {
 671   static wxChar dest[_MAXPATHLEN];
 672
 673   if (filename.empty())
 674     return (wxChar *) NULL;
 675
 676   wxStrcpy (dest, WXSTRINGCAST filename);
 677 #ifdef __WXMSW__
 678   wxUnix2DosFilename(dest);
 679 #endif
 680
 681   // Handle environment
 682   const wxChar *val;
 683 #ifndef __WXWINCE__
 684   wxChar *tcp;
 685   if (!envname.empty() && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 686      (tcp = wxStrstr (dest, val)) != NULL)
 687     {
 688         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 689         *tcp++ = wxT('$');
 690         *tcp++ = wxT('{');
 691         wxStrcpy (tcp, WXSTRINGCAST envname);
 692         wxStrcat (tcp, wxT("}"));
 693         wxStrcat (tcp, wxFileFunctionsBuffer);
 694     }
 695 #endif
 696
 697   // Handle User's home (ignore root homes!)
 698   val = wxGetUserHome (user);
 699   if (!val)
 700     return dest;
 701
 702   const size_t len = wxStrlen(val);
 703   if (len <= 2)
 704     return dest;
 705
 706   if (wxStrncmp(dest, val, len) == 0)
 707   {
 708     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 709     if (!user.empty())
 710            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 711     wxStrcat(wxFileFunctionsBuffer, dest + len);
 712     wxStrcpy (dest, wxFileFunctionsBuffer);
 713   }
 714
 715   return dest;
 716 }
 717
 718 // Return just the filename, not the path (basename)
 719 wxChar *wxFileNameFromPath (wxChar *path)
 720 {
 721     wxString p = path;
 722     wxString n = wxFileNameFromPath(p);
 723
 724     return path + p.length() - n.length();
 725 }
 726
 727 wxString wxFileNameFromPath (const wxString& path)
 728 {
 729     wxString name, ext;
 730     wxFileName::SplitPath(path, NULL, &name, &ext);
 731
 732     wxString fullname = name;
 733     if ( !ext.empty() )
 734     {
 735         fullname << wxFILE_SEP_EXT << ext;
 736     }
 737
 738     return fullname;
 739 }
 740
 741 // Return just the directory, or NULL if no directory
 742 wxChar *
 743 wxPathOnly (wxChar *path)
 744 {
 745     if (path && *path)
 746     {
 747         static wxChar buf[_MAXPATHLEN];
 748
 749         // Local copy
 750         wxStrcpy (buf, path);
 751
 752         int l = wxStrlen(path);
 753         int i = l - 1;
 754
 755         // Search backward for a backward or forward slash
 756         while (i > -1)
 757         {
 758 #if defined(__WXMAC__) && !defined(__DARWIN__)
 759             // Classic or Carbon CodeWarrior like
 760             // Carbon with Apple DevTools is Unix like
 761             if (path[i] == wxT(':') )
 762             {
 763                 buf[i] = 0;
 764                 return buf;
 765             }
 766 #else
 767             // Unix like or Windows
 768             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 769             {
 770                 buf[i] = 0;
 771                 return buf;
 772             }
 773 #endif
 774 #ifdef __VMS__
 775             if (path[i] == wxT(']'))
 776             {
 777                 buf[i+1] = 0;
 778                 return buf;
 779             }
 780 #endif
 781             i --;
 782         }
 783
 784 #if defined(__WXMSW__) || defined(__OS2__)
 785         // Try Drive specifier
 786         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 787         {
 788             // A:junk --> A:. (since A:.\junk Not A:\junk)
 789             buf[2] = wxT('.');
 790             buf[3] = wxT('\0');
 791             return buf;
 792         }
 793 #endif
 794     }
 795     return (wxChar *) NULL;
 796 }
 797
 798 // Return just the directory, or NULL if no directory
 799 wxString wxPathOnly (const wxString& path)
 800 {
 801     if (!path.empty())
 802     {
 803         wxChar buf[_MAXPATHLEN];
 804
 805         // Local copy
 806         wxStrcpy (buf, WXSTRINGCAST path);
 807
 808         int l = path.length();
 809         int i = l - 1;
 810
 811         // Search backward for a backward or forward slash
 812         while (i > -1)
 813         {
 814 #if defined(__WXMAC__) && !defined(__DARWIN__)
 815             // Classic or Carbon CodeWarrior like
 816             // Carbon with Apple DevTools is Unix like
 817             if (path[i] == wxT(':') )
 818             {
 819                 buf[i] = 0;
 820                 return wxString(buf);
 821             }
 822 #else
 823             // Unix like or Windows
 824             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 825             {
 826                 // Don't return an empty string
 827                 if (i == 0)
 828                     i ++;
 829                 buf[i] = 0;
 830                 return wxString(buf);
 831             }
 832 #endif
 833 #ifdef __VMS__
 834             if (path[i] == wxT(']'))
 835             {
 836                 buf[i+1] = 0;
 837                 return wxString(buf);
 838             }
 839 #endif
 840             i --;
 841         }
 842
 843 #if defined(__WXMSW__) || defined(__OS2__)
 844         // Try Drive specifier
 845         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 846         {
 847             // A:junk --> A:. (since A:.\junk Not A:\junk)
 848             buf[2] = wxT('.');
 849             buf[3] = wxT('\0');
 850             return wxString(buf);
 851         }
 852 #endif
 853     }
 854     return wxEmptyString;
 855 }
 856
 857 // Utility for converting delimiters in DOS filenames to UNIX style
 858 // and back again - or we get nasty problems with delimiters.
 859 // Also, convert to lower case, since case is significant in UNIX.
 860
 861 #if defined(__WXMAC__)
 862
 863 #if TARGET_API_MAC_OSX
 864 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 865 #else
 866 #define kDefaultPathStyle kCFURLHFSPathStyle
 867 #endif
 868
 869 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 870 {
 871     CFURLRef fullURLRef;
 872     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 873     if ( additionalPathComponent )
 874     {
 875         CFURLRef parentURLRef = fullURLRef ;
 876         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 877             additionalPathComponent,false);
 878         CFRelease( parentURLRef ) ;
 879     }
 880     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 881     CFRelease( fullURLRef ) ;
 882     return wxMacCFStringHolder(cfString).AsString(wxLocale::GetSystemEncoding());
 883 }
 884
 885 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 886 {
 887     OSStatus err = noErr ;
 888     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) , kDefaultPathStyle, false);
 889     if ( NULL != url )
 890     {
 891         if ( CFURLGetFSRef(url, fsRef) == false )
 892             err = fnfErr ;
 893         CFRelease( url ) ;
 894     }
 895     else
 896     {
 897         err = fnfErr ;
 898     }
 899     return err ;
 900 }
 901
 902 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 903 {
 904     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 905                                                       uniname->unicode,
 906                                                       uniname->length );
 907     return wxMacCFStringHolder(cfname).AsString() ;
 908 }
 909
 910 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 911 {
 912     FSRef fsRef ;
 913     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 914     {
 915         return wxMacFSRefToPath( &fsRef ) ;
 916     }
 917     return wxEmptyString ;
 918 }
 919
 920 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 921 {
 922     OSStatus err = noErr ;
 923     FSRef fsRef ;
 924     wxMacPathToFSRef( path , &fsRef ) ;
 925     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 926 }
 927
 928 #endif // __WXMAC__
 929
 930 void
 931 wxDos2UnixFilename (wxChar *s)
 932 {
 933   if (s)
 934     while (*s)
 935       {
 936         if (*s == _T('\\'))
 937           *s = _T('/');
 938 #ifdef __WXMSW__
 939         else
 940           *s = (wxChar)wxTolower (*s);        // Case INDEPENDENT
 941 #endif
 942         s++;
 943       }
 944 }
 945
 946 void
 947 #if defined(__WXMSW__) || defined(__OS2__)
 948 wxUnix2DosFilename (wxChar *s)
 949 #else
 950 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
 951 #endif
 952 {
 953 // Yes, I really mean this to happen under DOS only! JACS
 954 #if defined(__WXMSW__) || defined(__OS2__)
 955   if (s)
 956     while (*s)
 957       {
 958         if (*s == wxT('/'))
 959           *s = wxT('\\');
 960         s++;
 961       }
 962 #endif
 963 }
 964
 965 // Concatenate two files to form third
 966 bool
 967 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 968 {
 969 #if wxUSE_FILE
 970
 971     wxFile in1(file1), in2(file2);
 972     wxTempFile out(file3);
 973
 974     if ( !in1.IsOpened() || !in2.IsOpened() || !out.IsOpened() )
 975         return false;
 976
 977     ssize_t ofs;
 978     unsigned char buf[1024];
 979
 980     for( int i=0; i<2; i++)
 981     {
 982         wxFile *in = i==0 ? &in1 : &in2;
 983         do{
 984             if ( (ofs = in->Read(buf,WXSIZEOF(buf))) == wxInvalidOffset ) return false;
 985             if ( ofs > 0 )
 986                 if ( !out.Write(buf,ofs) )
 987                     return false;
 988         } while ( ofs == (ssize_t)WXSIZEOF(buf) );
 989     }
 990
 991     return out.Commit();
 992
 993 #else
 994
 995     wxUnusedVar(file1);
 996     wxUnusedVar(file2);
 997     wxUnusedVar(file3);
 998     return false;
 999
1000 #endif
1001 }
1002
1003 // Copy files
1004 bool
1005 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
1006 {
1007 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1008     // CopyFile() copies file attributes and modification time too, so use it
1009     // instead of our code if available
1010     //
1011     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1012     if ( !::CopyFile(file1, file2, !overwrite) )
1013     {
1014         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1015                       file1.c_str(), file2.c_str());
1016
1017         return false;
1018     }
1019 #elif defined(__OS2__)
1020     if ( ::DosCopy((PSZ)file1.c_str(), (PSZ)file2.c_str(), overwrite ? DCPY_EXISTING : 0) != 0 )
1021         return false;
1022 #elif defined(__PALMOS__)
1023     // TODO with http://www.palmos.com/dev/support/docs/protein_books/Memory_Databases_Files/
1024     return false;
1025 #elif wxUSE_FILE // !Win32
1026
1027     wxStructStat fbuf;
1028     // get permissions of file1
1029     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1030     {
1031         // the file probably doesn't exist or we haven't the rights to read
1032         // from it anyhow
1033         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1034                       file1.c_str());
1035         return false;
1036     }
1037
1038     // open file1 for reading
1039     wxFile fileIn(file1, wxFile::read);
1040     if ( !fileIn.IsOpened() )
1041         return false;
1042
1043     // remove file2, if it exists. This is needed for creating
1044     // file2 with the correct permissions in the next step
1045     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1046     {
1047         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1048                       file2.c_str());
1049         return false;
1050     }
1051
1052     // reset the umask as we want to create the file with exactly the same
1053     // permissions as the original one
1054     wxCHANGE_UMASK(0);
1055
1056     // create file2 with the same permissions than file1 and open it for
1057     // writing
1058
1059     wxFile fileOut;
1060     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1061         return false;
1062
1063     // copy contents of file1 to file2
1064     char buf[4096];
1065     size_t count;
1066     for ( ;; )
1067     {
1068         count = fileIn.Read(buf, WXSIZEOF(buf));
1069         if ( fileIn.Error() )
1070             return false;
1071
1072         // end of file?
1073         if ( !count )
1074             break;
1075
1076         if ( fileOut.Write(buf, count) < count )
1077             return false;
1078     }
1079
1080     // we can expect fileIn to be closed successfully, but we should ensure
1081     // that fileOut was closed as some write errors (disk full) might not be
1082     // detected before doing this
1083     if ( !fileIn.Close() || !fileOut.Close() )
1084         return false;
1085
1086 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1087     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1088     // however
1089     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1090     {
1091         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1092                       file2.c_str());
1093         return false;
1094     }
1095 #endif // OS/2 || Mac
1096
1097 #else // !Win32 && ! wxUSE_FILE
1098
1099     // impossible to simulate with wxWidgets API
1100     wxUnusedVar(file1);
1101     wxUnusedVar(file2);
1102     wxUnusedVar(overwrite);
1103     return false;
1104
1105 #endif // __WXMSW__ && __WIN32__
1106
1107     return true;
1108 }
1109
1110 bool
1111 wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite)
1112 {
1113     if ( !overwrite && wxFileExists(file2) )
1114     {
1115         wxLogSysError
1116         (
1117             _("Failed to rename the file '%s' to '%s' because the destination file already exists."),
1118             file1.c_str(), file2.c_str()
1119         );
1120
1121         return false;
1122     }
1123
1124 #if !defined(__WXWINCE__) && !defined(__WXPALMOS__)
1125     // Normal system call
1126   if ( wxRename (file1, file2) == 0 )
1127     return true;
1128 #endif
1129
1130   // Try to copy
1131   if (wxCopyFile(file1, file2, overwrite)) {
1132     wxRemoveFile(file1);
1133     return true;
1134   }
1135   // Give up
1136   return false;
1137 }
1138
1139 bool wxRemoveFile(const wxString& file)
1140 {
1141 #if defined(__VISUALC__) \
1142  || defined(__BORLANDC__) \
1143  || defined(__WATCOMC__) \
1144  || defined(__DMC__) \
1145  || defined(__GNUWIN32__) \
1146  || (defined(__MWERKS__) && defined(__MSL__))
1147     int res = wxRemove(file);
1148 #elif defined(__WXMAC__)
1149     int res = unlink(wxFNCONV(file));
1150 #elif defined(__WXPALMOS__)
1151     int res = 1;
1152     // TODO with VFSFileDelete()
1153 #else
1154     int res = unlink(OS_FILENAME(file));
1155 #endif
1156
1157     return res == 0;
1158 }
1159
1160 bool wxMkdir(const wxString& dir, int perm)
1161 {
1162 #if defined(__WXPALMOS__)
1163     return false;
1164 #elif defined(__WXMAC__) && !defined(__UNIX__)
1165     return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1166 #else // !Mac
1167     const wxChar *dirname = dir.c_str();
1168
1169     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1170     // for the GNU compiler
1171 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1172   #if defined(MSVCRT)
1173     wxUnusedVar(perm);
1174     if ( mkdir(wxFNCONV(dirname)) != 0 )
1175   #else
1176     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1177   #endif
1178 #elif defined(__OS2__)
1179     wxUnusedVar(perm);
1180     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1181 #elif defined(__DOS__)
1182   #if defined(__WATCOMC__)
1183     (void)perm;
1184     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1185   #elif defined(__DJGPP__)
1186     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1187   #else
1188     #error "Unsupported DOS compiler!"
1189   #endif
1190 #else  // !MSW, !DOS and !OS/2 VAC++
1191     wxUnusedVar(perm);
1192 #ifdef __WXWINCE__
1193     if ( !CreateDirectory(dirname, NULL) )
1194 #else
1195     if ( wxMkDir(dir.fn_str()) != 0 )
1196 #endif
1197 #endif // !MSW/MSW
1198     {
1199         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1200
1201         return false;
1202     }
1203
1204     return true;
1205 #endif // Mac/!Mac
1206 }
1207
1208 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1209 {
1210 #if defined(__VMS__)
1211     return false; //to be changed since rmdir exists in VMS7.x
1212 #elif defined(__OS2__)
1213     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1214 #elif defined(__WXWINCE__)
1215     return (CreateDirectory(dir, NULL) != 0);
1216 #elif defined(__WXPALMOS__)
1217     // TODO with VFSFileRename()
1218     return false;
1219 #else
1220     return (wxRmDir(OS_FILENAME(dir)) == 0);
1221 #endif
1222 }
1223
1224 // does the path exists? (may have or not '/' or '\\' at the end)
1225 bool wxDirExists(const wxChar *pszPathName)
1226 {
1227     wxString strPath(pszPathName);
1228
1229 #if defined(__WINDOWS__) || defined(__OS2__)
1230     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1231     // so remove all trailing backslashes from the path - but don't do this for
1232     // the pathes "d:\" (which are different from "d:") nor for just "\"
1233     while ( wxEndsWithPathSeparator(strPath) )
1234     {
1235         size_t len = strPath.length();
1236         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1237             break;
1238
1239         strPath.Truncate(len - 1);
1240     }
1241 #endif // __WINDOWS__
1242
1243 #ifdef __OS2__
1244     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1245     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1246         strPath << _T('.');
1247 #endif
1248
1249 #if defined(__WXPALMOS__)
1250     return false;
1251 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
1252     // stat() can't cope with network paths
1253     DWORD ret = ::GetFileAttributes(strPath);
1254
1255     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1256 #elif defined(__OS2__)
1257     FILESTATUS3 Info = {{0}};
1258     APIRET rc = ::DosQueryPathInfo((PSZ)(WXSTRINGCAST strPath), FIL_STANDARD,
1259                                    (void*) &Info, sizeof(FILESTATUS3));
1260
1261     return ((rc == NO_ERROR) && (Info.attrFile & FILE_DIRECTORY)) ||
1262       (rc == ERROR_SHARING_VIOLATION);
1263     // If we got a sharing violation, there must be something with this name.
1264 #else // !__WIN32__
1265
1266     wxStructStat st;
1267 #ifndef __VISAGECPP__
1268     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1269 #else
1270     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1271     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1272 #endif
1273
1274 #endif // __WIN32__/!__WIN32__
1275 }
1276
1277 // Get a temporary filename, opening and closing the file.
1278 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1279 {
1280 #if wxUSE_FILE
1281     wxString filename = wxFileName::CreateTempFileName(prefix);
1282     if ( filename.empty() )
1283         return NULL;
1284
1285     if ( buf )
1286         wxStrcpy(buf, filename);
1287     else
1288         buf = MYcopystring(filename);
1289
1290     return buf;
1291 #else
1292     wxUnusedVar(prefix);
1293     wxUnusedVar(buf);
1294     // wxFileName::CreateTempFileName needs wxFile class enabled
1295     return NULL;
1296 #endif
1297 }
1298
1299 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1300 {
1301     buf = wxGetTempFileName(prefix);
1302
1303     return !buf.empty();
1304 }
1305
1306 // Get first file name matching given wild card.
1307
1308 static wxDir *gs_dir = NULL;
1309 static wxString gs_dirPath;
1310
1311 wxString wxFindFirstFile(const wxChar *spec, int flags)
1312 {
1313     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1314     if ( gs_dirPath.empty() )
1315         gs_dirPath = wxT(".");
1316     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1317         gs_dirPath << wxFILE_SEP_PATH;
1318
1319     if (gs_dir)
1320         delete gs_dir;
1321     gs_dir = new wxDir(gs_dirPath);
1322
1323     if ( !gs_dir->IsOpened() )
1324     {
1325         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1326         return wxEmptyString;
1327     }
1328
1329     int dirFlags;
1330     switch (flags)
1331     {
1332         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1333         case wxFILE: dirFlags = wxDIR_FILES; break;
1334         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1335     }
1336
1337     wxString result;
1338     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1339     if ( result.empty() )
1340     {
1341         wxDELETE(gs_dir);
1342         return result;
1343     }
1344
1345     return gs_dirPath + result;
1346 }
1347
1348 wxString wxFindNextFile()
1349 {
1350     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1351
1352     wxString result;
1353     gs_dir->GetNext(&result);
1354
1355     if ( result.empty() )
1356     {
1357         wxDELETE(gs_dir);
1358         return result;
1359     }
1360
1361     return gs_dirPath + result;
1362 }
1363
1364
1365 // Get current working directory.
1366 // If buf is NULL, allocates space using new, else copies into buf.
1367 // wxGetWorkingDirectory() is obsolete, use wxGetCwd()
1368 // wxDoGetCwd() is their common core to be moved
1369 // to wxGetCwd() once wxGetWorkingDirectory() will be removed.
1370 // Do not expose wxDoGetCwd in headers!
1371
1372 wxChar *wxDoGetCwd(wxChar *buf, int sz)
1373 {
1374 #if defined(__WXPALMOS__)
1375     // TODO
1376     if(buf && sz>0) buf[0] = _T('\0');
1377     return buf;
1378 #elif defined(__WXWINCE__)
1379     // TODO
1380     if(buf && sz>0) buf[0] = _T('\0');
1381     return buf;
1382 #else
1383     if ( !buf )
1384     {
1385         buf = new wxChar[sz + 1];
1386     }
1387
1388     bool ok wxDUMMY_INITIALIZE(false);
1389
1390     // for the compilers which have Unicode version of _getcwd(), call it
1391     // directly, for the others call the ANSI version and do the translation
1392 #if !wxUSE_UNICODE
1393     #define cbuf buf
1394 #else // wxUSE_UNICODE
1395     bool needsANSI = true;
1396
1397     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1398         char cbuf[_MAXPATHLEN];
1399     #endif
1400
1401     #ifdef HAVE_WGETCWD
1402         #if wxUSE_UNICODE_MSLU
1403             if ( wxGetOsVersion() != wxWIN95 )
1404         #else
1405             char *cbuf = NULL; // never really used because needsANSI will always be false
1406         #endif
1407             {
1408                 ok = _wgetcwd(buf, sz) != NULL;
1409                 needsANSI = false;
1410             }
1411     #endif
1412
1413     if ( needsANSI )
1414 #endif // wxUSE_UNICODE
1415     {
1416     #if defined(_MSC_VER) || defined(__MINGW32__)
1417         ok = _getcwd(cbuf, sz) != NULL;
1418     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1419         char lbuf[1024] ;
1420         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1421         {
1422             wxString res( lbuf , *wxConvCurrent ) ;
1423             wxStrcpy( buf , res ) ;
1424             ok = true;
1425         }
1426         else
1427             ok = false ;
1428     #elif defined(__OS2__)
1429         APIRET rc;
1430         ULONG ulDriveNum = 0;
1431         ULONG ulDriveMap = 0;
1432         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1433         ok = rc == 0;
1434         if (ok)
1435         {
1436             sz -= 3;
1437             rc = ::DosQueryCurrentDir( 0 // current drive
1438                                       ,cbuf + 3
1439                                       ,(PULONG)&sz
1440                                      );
1441             cbuf[0] = char('A' + (ulDriveNum - 1));
1442             cbuf[1] = ':';
1443             cbuf[2] = '\\';
1444             ok = rc == 0;
1445         }
1446     #else // !Win32/VC++ !Mac !OS2
1447         ok = getcwd(cbuf, sz) != NULL;
1448     #endif // platform
1449
1450     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1451         // finally convert the result to Unicode if needed
1452         wxConvFile.MB2WC(buf, cbuf, sz);
1453     #endif // wxUSE_UNICODE
1454     }
1455
1456     if ( !ok )
1457     {
1458         wxLogSysError(_("Failed to get the working directory"));
1459
1460         // VZ: the old code used to return "." on error which didn't make any
1461         //     sense at all to me - empty string is a better error indicator
1462         //     (NULL might be even better but I'm afraid this could lead to
1463         //     problems with the old code assuming the return is never NULL)
1464         buf[0] = _T('\0');
1465     }
1466     else // ok, but we might need to massage the path into the right format
1467     {
1468 #ifdef __DJGPP__
1469         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1470         //     with / deliminers. We don't like that.
1471         for (wxChar *ch = buf; *ch; ch++)
1472         {
1473             if (*ch == wxT('/'))
1474                 *ch = wxT('\\');
1475         }
1476 #endif // __DJGPP__
1477
1478 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1479 //      he needs Unix as opposed to Win32 pathnames
1480 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1481         // another example of DOS/Unix mix (Cygwin)
1482         wxString pathUnix = buf;
1483 #if wxUSE_UNICODE
1484         char bufA[_MAXPATHLEN];
1485         cygwin_conv_to_full_win32_path(pathUnix.mb_str(wxConvFile), bufA);
1486         wxConvFile.MB2WC(buf, bufA, sz);
1487 #else
1488         cygwin_conv_to_full_win32_path(pathUnix, buf);
1489 #endif // wxUSE_UNICODE
1490 #endif // __CYGWIN__
1491     }
1492
1493     return buf;
1494
1495 #if !wxUSE_UNICODE
1496     #undef cbuf
1497 #endif
1498
1499 #endif
1500     // __WXWINCE__
1501 }
1502
1503 #if WXWIN_COMPATIBILITY_2_6
1504 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1505 {
1506     return wxDoGetCwd(buf,sz);
1507 }
1508 #endif // WXWIN_COMPATIBILITY_2_6
1509
1510 wxString wxGetCwd()
1511 {
1512     wxString str;
1513     wxDoGetCwd(wxStringBuffer(str, _MAXPATHLEN), _MAXPATHLEN);
1514     return str;
1515 }
1516
1517 bool wxSetWorkingDirectory(const wxString& d)
1518 {
1519 #if defined(__OS2__)
1520     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1521 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1522     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1523 #elif defined(__WINDOWS__)
1524
1525 #ifdef __WIN32__
1526 #ifdef __WXWINCE__
1527     // No equivalent in WinCE
1528     wxUnusedVar(d);
1529     return false;
1530 #else
1531     return (bool)(SetCurrentDirectory(d) != 0);
1532 #endif
1533 #else
1534     // Must change drive, too.
1535     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1536     if (isDriveSpec)
1537     {
1538         wxChar firstChar = d[0];
1539
1540         // To upper case
1541         if (firstChar > 90)
1542             firstChar = firstChar - 32;
1543
1544         // To a drive number
1545         unsigned int driveNo = firstChar - 64;
1546         if (driveNo > 0)
1547         {
1548             unsigned int noDrives;
1549             _dos_setdrive(driveNo, &noDrives);
1550         }
1551     }
1552     bool success = (chdir(WXSTRINGCAST d) == 0);
1553
1554     return success;
1555 #endif
1556
1557 #endif
1558 }
1559
1560 // Get the OS directory if appropriate (such as the Windows directory).
1561 // On non-Windows platform, probably just return the empty string.
1562 wxString wxGetOSDirectory()
1563 {
1564 #ifdef __WXWINCE__
1565     return wxString(wxT("\\Windows"));
1566 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1567     wxChar buf[256];
1568     GetWindowsDirectory(buf, 256);
1569     return wxString(buf);
1570 #elif defined(__WXMAC__)
1571     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1572 #else
1573     return wxEmptyString;
1574 #endif
1575 }
1576
1577 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1578 {
1579     size_t len = wxStrlen(pszFileName);
1580
1581     return len && wxIsPathSeparator(pszFileName[len - 1]);
1582 }
1583
1584 // find a file in a list of directories, returns false if not found
1585 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1586 {
1587     // we assume that it's not empty
1588     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1589                  _T("empty file name in wxFindFileInPath"));
1590
1591     // skip path separator in the beginning of the file name if present
1592     if ( wxIsPathSeparator(*pszFile) )
1593         pszFile++;
1594
1595     // copy the path (strtok will modify it)
1596     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1597     wxStrcpy(szPath, pszPath);
1598
1599     wxString strFile;
1600     wxChar *pc, *save_ptr;
1601     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1602           pc != NULL;
1603           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1604     {
1605         // search for the file in this directory
1606         strFile = pc;
1607         if ( !wxEndsWithPathSeparator(pc) )
1608             strFile += wxFILE_SEP_PATH;
1609         strFile += pszFile;
1610
1611         if ( wxFileExists(strFile) ) {
1612             *pStr = strFile;
1613             break;
1614         }
1615     }
1616
1617     // suppress warning about unused variable save_ptr when wxStrtok() is a
1618     // macro which throws away its third argument
1619     save_ptr = pc;
1620
1621     delete [] szPath;
1622
1623     return pc != NULL;  // if true => we breaked from the loop
1624 }
1625
1626 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1627                              wxString *pstrPath,
1628                              wxString *pstrName,
1629                              wxString *pstrExt)
1630 {
1631     // it can be empty, but it shouldn't be NULL
1632     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1633
1634     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1635 }
1636
1637 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1638 {
1639     wxDateTime mtime;
1640     if ( !wxFileName(filename).GetTimes(NULL, &mtime, NULL) )
1641         return (time_t)-1;
1642
1643     return mtime.GetTicks();
1644 }
1645
1646
1647 // Parses the filterStr, returning the number of filters.
1648 // Returns 0 if none or if there's a problem.
1649 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpeg"
1650
1651 int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr,
1652                                            wxArrayString& descriptions,
1653                                            wxArrayString& filters)
1654 {
1655     descriptions.Clear();
1656     filters.Clear();
1657
1658     wxString str(filterStr);
1659
1660     wxString description, filter;
1661     int pos = 0;
1662     while( pos != wxNOT_FOUND )
1663     {
1664         pos = str.Find(wxT('|'));
1665         if ( pos == wxNOT_FOUND )
1666         {
1667             // if there are no '|'s at all in the string just take the entire
1668             // string as filter and make description empty for later autocompletion
1669             if ( filters.IsEmpty() )
1670             {
1671                 descriptions.Add(wxEmptyString);
1672                 filters.Add(filterStr);
1673             }
1674             else
1675             {
1676                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1677             }
1678
1679             break;
1680         }
1681
1682         description = str.Left(pos);
1683         str = str.Mid(pos + 1);
1684         pos = str.Find(wxT('|'));
1685         if ( pos == wxNOT_FOUND )
1686         {
1687             filter = str;
1688         }
1689         else
1690         {
1691             filter = str.Left(pos);
1692             str = str.Mid(pos + 1);
1693         }
1694
1695         descriptions.Add(description);
1696         filters.Add(filter);
1697     }
1698
1699 #if defined(__WXMOTIF__)
1700     // split it so there is one wildcard per entry
1701     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1702     {
1703         pos = filters[i].Find(wxT(';'));
1704         if (pos != wxNOT_FOUND)
1705         {
1706             // first split only filters
1707             descriptions.Insert(descriptions[i],i+1);
1708             filters.Insert(filters[i].Mid(pos+1),i+1);
1709             filters[i]=filters[i].Left(pos);
1710
1711             // autoreplace new filter in description with pattern:
1712             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1713             // cause split into:
1714             //     C/C++ Files(*.cpp)|*.cpp
1715             //     C/C++ Files(*.c;*.h)|*.c;*.h
1716             // and next iteration cause another split into:
1717             //     C/C++ Files(*.cpp)|*.cpp
1718             //     C/C++ Files(*.c)|*.c
1719             //     C/C++ Files(*.h)|*.h
1720             for ( size_t k=i;k<i+2;k++ )
1721             {
1722                 pos = descriptions[k].Find(filters[k]);
1723                 if (pos != wxNOT_FOUND)
1724                 {
1725                     wxString before = descriptions[k].Left(pos);
1726                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1727                     pos = before.Find(_T('('),true);
1728                     if (pos>before.Find(_T(')'),true))
1729                     {
1730                         before = before.Left(pos+1);
1731                         before << filters[k];
1732                         pos = after.Find(_T(')'));
1733                         int pos1 = after.Find(_T('('));
1734                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1735                         {
1736                             before << after.Mid(pos);
1737                             descriptions[k] = before;
1738                         }
1739                     }
1740                 }
1741             }
1742         }
1743     }
1744 #endif
1745
1746     // autocompletion
1747     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1748     {
1749         if ( descriptions[j].empty() && !filters[j].empty() )
1750         {
1751             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1752         }
1753     }
1754
1755     return filters.GetCount();
1756 }
1757
1758
1759 //------------------------------------------------------------------------
1760 // wild character routines
1761 //------------------------------------------------------------------------
1762
1763 bool wxIsWild( const wxString& pattern )
1764 {
1765     wxString tmp = pattern;
1766     wxChar *pat = WXSTRINGCAST(tmp);
1767     while (*pat)
1768     {
1769         switch (*pat++)
1770         {
1771         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1772             return true;
1773         case wxT('\\'):
1774             if (!*pat++)
1775                 return false;
1776         }
1777     }
1778     return false;
1779 }
1780
1781 /*
1782 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1783 *
1784 * The match procedure is public domain code (from ircII's reg.c)
1785 * but modified to suit our tastes (RN: No "%" syntax I guess)
1786 */
1787
1788 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1789 {
1790     if (text.empty())
1791     {
1792         /* Match if both are empty. */
1793         return pat.empty();
1794     }
1795
1796     const wxChar *m = pat.c_str(),
1797     *n = text.c_str(),
1798     *ma = NULL,
1799     *na = NULL;
1800     int just = 0,
1801     acount = 0,
1802     count = 0;
1803
1804     if (dot_special && (*n == wxT('.')))
1805     {
1806         /* Never match so that hidden Unix files
1807          * are never found. */
1808         return false;
1809     }
1810
1811     for (;;)
1812     {
1813         if (*m == wxT('*'))
1814         {
1815             ma = ++m;
1816             na = n;
1817             just = 1;
1818             acount = count;
1819         }
1820         else if (*m == wxT('?'))
1821         {
1822             m++;
1823             if (!*n++)
1824                 return false;
1825         }
1826         else
1827         {
1828             if (*m == wxT('\\'))
1829             {
1830                 m++;
1831                 /* Quoting "nothing" is a bad thing */
1832                 if (!*m)
1833                     return false;
1834             }
1835             if (!*m)
1836             {
1837                 /*
1838                 * If we are out of both strings or we just
1839                 * saw a wildcard, then we can say we have a
1840                 * match
1841                 */
1842                 if (!*n)
1843                     return true;
1844                 if (just)
1845                     return true;
1846                 just = 0;
1847                 goto not_matched;
1848             }
1849             /*
1850             * We could check for *n == NULL at this point, but
1851             * since it's more common to have a character there,
1852             * check to see if they match first (m and n) and
1853             * then if they don't match, THEN we can check for
1854             * the NULL of n
1855             */
1856             just = 0;
1857             if (*m == *n)
1858             {
1859                 m++;
1860                 count++;
1861                 n++;
1862             }
1863             else
1864             {
1865
1866                 not_matched:
1867
1868                 /*
1869                 * If there are no more characters in the
1870                 * string, but we still need to find another
1871                 * character (*m != NULL), then it will be
1872                 * impossible to match it
1873                 */
1874                 if (!*n)
1875                     return false;
1876
1877                 if (ma)
1878                 {
1879                     m = ma;
1880                     n = ++na;
1881                     count = acount;
1882                 }
1883                 else
1884                     return false;
1885             }
1886         }
1887     }
1888 }
1889
1890 // Return the type of an open file
1891 //
1892 // Some file types on some platforms seem seekable but in fact are not.
1893 // The main use of this function is to allow such cases to be detected
1894 // (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
1895 //
1896 // This is important for the archive streams, which benefit greatly from
1897 // being able to seek on a stream, but which will produce corrupt archives
1898 // if they unknowingly seek on a non-seekable stream.
1899 //
1900 // wxFILE_KIND_DISK is a good catch all return value, since other values
1901 // disable features of the archive streams. Some other value must be returned
1902 // for a file type that appears seekable but isn't.
1903 //
1904 // Known examples:
1905 //   *  Pipes on Windows
1906 //   *  Files on VMS with a record format other than StreamLF
1907 //
1908 wxFileKind wxGetFileKind(int fd)
1909 {
1910 #if defined __WXMSW__ && !defined __WXWINCE__ && defined wxGetOSFHandle
1911     switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
1912     {
1913         case FILE_TYPE_CHAR:
1914             return wxFILE_KIND_TERMINAL;
1915         case FILE_TYPE_DISK:
1916             return wxFILE_KIND_DISK;
1917         case FILE_TYPE_PIPE:
1918             return wxFILE_KIND_PIPE;
1919     }
1920
1921     return wxFILE_KIND_UNKNOWN;
1922
1923 #elif defined(__UNIX__)
1924     if (isatty(fd))
1925         return wxFILE_KIND_TERMINAL;
1926
1927     struct stat st;
1928     fstat(fd, &st);
1929
1930     if (S_ISFIFO(st.st_mode))
1931         return wxFILE_KIND_PIPE;
1932     if (!S_ISREG(st.st_mode))
1933         return wxFILE_KIND_UNKNOWN;
1934
1935     #if defined(__VMS__)
1936         if (st.st_fab_rfm != FAB$C_STMLF)
1937             return wxFILE_KIND_UNKNOWN;
1938     #endif
1939
1940     return wxFILE_KIND_DISK;
1941
1942 #else
1943     #define wxFILEKIND_STUB
1944     (void)fd;
1945     return wxFILE_KIND_DISK;
1946 #endif
1947 }
1948
1949 wxFileKind wxGetFileKind(FILE *fp)
1950 {
1951     // Note: The watcom rtl dll doesn't have fileno (the static lib does).
1952     //       Should be fixed in version 1.4.
1953 #if defined(wxFILEKIND_STUB) || wxONLY_WATCOM_EARLIER_THAN(1,4)
1954     (void)fp;
1955     return wxFILE_KIND_DISK;
1956 #else
1957     return fp ? wxGetFileKind(fileno(fp)) : wxFILE_KIND_UNKNOWN;
1958 #endif
1959 }
1960
1961 #ifdef __VISUALC__
1962     #pragma warning(default:4706)   // assignment within conditional expression
1963 #endif // VC++