src/common/filefn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "filefn.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26 #include "wx/defs.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #include "wx/utils.h"
  33 #include "wx/intl.h"
  34 #include "wx/file.h"
  35 #include "wx/filename.h"
  36 #include "wx/dir.h"
  37
  38 // there are just too many of those...
  39 #ifdef __VISUALC__
  40     #pragma warning(disable:4706)   // assignment within conditional expression
  41 #endif // VC++
  42
  43 #include <ctype.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #if !defined(__WATCOMC__)
  48     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  49         #include <errno.h>
  50     #endif
  51 #endif
  52
  53 #if defined(__WXMAC__)
  54     #include  "wx/mac/private.h"  // includes mac headers
  55 #endif
  56
  57 #ifdef __WXWINCE__
  58 #include "wx/msw/wince/time.h"
  59 #include "wx/msw/private.h"
  60 #else
  61 #include <time.h>
  62 #endif
  63
  64 #ifdef __WXWINCE__
  65 // Nothing
  66 #elif !defined(__MWERKS__)
  67     #include <sys/types.h>
  68     #include <sys/stat.h>
  69 #else
  70 #ifdef __MACH__
  71 #include <sys/types.h>
  72 #include <utime.h>
  73 #include <sys/stat.h>
  74 #include <unistd.h>
  75 #else
  76     #include <stat.h>
  77     #include <unistd.h>
  78     #include <unix.h>
  79     #include <fcntl.h>
  80 #endif
  81 #endif
  82
  83 #ifdef __OS2__
  84 // need to check for __OS2__ first since currently both
  85 // __OS2__ and __UNIX__ are defined.
  86     #include <process.h>
  87     #include "wx/os2/private.h"
  88 #ifdef __EMX__
  89     #include <unistd.h>
  90 #endif
  91 #elif defined(__UNIX__)
  92     #include <unistd.h>
  93     #include <dirent.h>
  94     #include <fcntl.h>
  95 #endif
  96
  97 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
  98 #if !defined( __GNUWIN32__ ) && !defined( __MWERKS__ ) && !defined(__SALFORDC__) && !defined(__WXWINCE__)
  99     #include <direct.h>
 100     #include <dos.h>
 101     #include <io.h>
 102 #endif // __WINDOWS__
 103 #endif // native Win compiler
 104
 105 #if defined(__DOS__)
 106     #ifdef __WATCOMC__
 107         #include <direct.h>
 108         #include <dos.h>
 109         #include <io.h>
 110     #endif
 111     #ifdef __DJGPP__
 112         #include <unistd.h>
 113     #endif
 114 #endif
 115
 116 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
 117                     // this (3.1 I believe) and how to test for it.
 118                     // If this works for Borland 4.0 as well, then no worries.
 119     #include <dir.h>
 120 #endif
 121
 122 #ifdef __SALFORDC__
 123     #include <dir.h>
 124     #include <unix.h>
 125 #endif
 126
 127 #include "wx/log.h"
 128
 129 // No, Cygwin doesn't appear to have fnmatch.h after all.
 130 #if defined(HAVE_FNMATCH_H)
 131     #include "fnmatch.h"
 132 #endif
 133
 134 #ifdef __WINDOWS__
 135     #include "wx/msw/wrapwin.h"
 136     #include "wx/msw/mslu.h"
 137
 138     // for _getcwd
 139     #ifdef __MINGW32__
 140         #include <io.h>
 141     #endif
 142
 143     // sys/cygwin.h is needed for cygwin_conv_to_full_win32_path()
 144     //
 145     // note that it must be included after <windows.h>
 146     #ifdef __GNUWIN32__
 147         #ifdef __CYGWIN__
 148             #include <sys/cygwin.h>
 149         #endif
 150     #endif // __GNUWIN32__
 151 #endif // __WINDOWS__
 152
 153 // TODO: Borland probably has _wgetcwd as well?
 154 #ifdef _MSC_VER
 155     #define HAVE_WGETCWD
 156 #endif
 157
 158 // ----------------------------------------------------------------------------
 159 // constants
 160 // ----------------------------------------------------------------------------
 161
 162 #ifndef _MAXPATHLEN
 163     #define _MAXPATHLEN 1024
 164 #endif
 165
 166 #ifdef __WXMAC__
 167 #    include "MoreFilesX.h"
 168 #endif
 169
 170 // ----------------------------------------------------------------------------
 171 // private globals
 172 // ----------------------------------------------------------------------------
 173
 174 // MT-FIXME: get rid of this horror and all code using it
 175 static wxChar wxFileFunctionsBuffer[4*_MAXPATHLEN];
 176
 177 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 178 //
 179 // VisualAge C++ V4.0 cannot have any external linkage const decs
 180 // in headers included by more than one primary source
 181 //
 182 const off_t wxInvalidOffset = (off_t)-1;
 183 #endif
 184
 185 // ----------------------------------------------------------------------------
 186 // macros
 187 // ----------------------------------------------------------------------------
 188
 189 // we need to translate Mac filenames before passing them to OS functions
 190 #define OS_FILENAME(s) (s.fn_str())
 191
 192 // ============================================================================
 193 // implementation
 194 // ============================================================================
 195
 196 #ifdef wxNEED_WX_UNISTD_H
 197
 198 WXDLLEXPORT int wxStat( const wxChar *file_name, wxStructStat *buf )
 199 {
 200     return stat( wxConvFile.cWX2MB( file_name ), buf );
 201 }
 202
 203 WXDLLEXPORT int wxAccess( const wxChar *pathname, int mode )
 204 {
 205     return access( wxConvFile.cWX2MB( pathname ), mode );
 206 }
 207
 208 WXDLLEXPORT int wxOpen( const wxChar *pathname, int flags, mode_t mode )
 209 {
 210     return open( wxConvFile.cWX2MB( pathname ), flags, mode );
 211 }
 212
 213 #endif
 214    // wxNEED_WX_UNISTD_H
 215
 216 // ----------------------------------------------------------------------------
 217 // wxPathList
 218 // ----------------------------------------------------------------------------
 219
 220 // IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
 221
 222 static inline wxChar* MYcopystring(const wxString& s)
 223 {
 224     wxChar* copy = new wxChar[s.length() + 1];
 225     return wxStrcpy(copy, s.c_str());
 226 }
 227
 228 static inline wxChar* MYcopystring(const wxChar* s)
 229 {
 230     wxChar* copy = new wxChar[wxStrlen(s) + 1];
 231     return wxStrcpy(copy, s);
 232 }
 233
 234 void wxPathList::Add (const wxString& path)
 235 {
 236     wxStringList::Add (WXSTRINGCAST path);
 237 }
 238
 239 // Add paths e.g. from the PATH environment variable
 240 void wxPathList::AddEnvList (const wxString& envVariable)
 241 {
 242     // No environment variables on WinCE
 243 #ifndef __WXWINCE__
 244     static const wxChar PATH_TOKS[] =
 245 #if defined(__WINDOWS__) || defined(__OS2__)
 246         /*
 247         The space has been removed from the tokenizers, otherwise a
 248         path such as "C:\Program Files" would be split into 2 paths:
 249         "C:\Program" and "Files"
 250         */
 251 //        wxT(" ;"); // Don't seperate with colon in DOS (used for drive)
 252         wxT(";"); // Don't seperate with colon in DOS (used for drive)
 253 #else
 254         wxT(" :;");
 255 #endif
 256
 257     wxChar *val = wxGetenv (WXSTRINGCAST envVariable);
 258     if (val && *val)
 259     {
 260         wxChar *s = MYcopystring (val);
 261         wxChar *save_ptr, *token = wxStrtok (s, PATH_TOKS, &save_ptr);
 262
 263         if (token)
 264         {
 265             Add(token);
 266             while (token)
 267             {
 268                 if ( (token = wxStrtok ((wxChar *) NULL, PATH_TOKS, &save_ptr))
 269                     != NULL )
 270                 {
 271                     Add(token);
 272                 }
 273             }
 274         }
 275
 276         // suppress warning about unused variable save_ptr when wxStrtok() is a
 277         // macro which throws away its third argument
 278         save_ptr = token;
 279
 280         delete [] s;
 281     }
 282 #endif
 283 }
 284
 285 // Given a full filename (with path), ensure that that file can
 286 // be accessed again USING FILENAME ONLY by adding the path
 287 // to the list if not already there.
 288 void wxPathList::EnsureFileAccessible (const wxString& path)
 289 {
 290     wxString path_only(wxPathOnly(path));
 291     if ( !path_only.IsEmpty() )
 292     {
 293         if ( !Member(path_only) )
 294             Add(path_only);
 295     }
 296 }
 297
 298 bool wxPathList::Member (const wxString& path)
 299 {
 300   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 301   {
 302       wxString path2( node->GetData() );
 303       if (
 304 #if defined(__WINDOWS__) || defined(__OS2__) || defined(__VMS__) || defined (__WXMAC__)
 305       // Case INDEPENDENT
 306           path.CompareTo (path2, wxString::ignoreCase) == 0
 307 #else
 308       // Case sensitive File System
 309           path.CompareTo (path2) == 0
 310 #endif
 311         )
 312         return true;
 313   }
 314   return false;
 315 }
 316
 317 wxString wxPathList::FindValidPath (const wxString& file)
 318 {
 319   if (wxFileExists (wxExpandPath(wxFileFunctionsBuffer, file)))
 320     return wxString(wxFileFunctionsBuffer);
 321
 322   wxChar buf[_MAXPATHLEN];
 323   wxStrcpy(buf, wxFileFunctionsBuffer);
 324
 325   wxChar *filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 326
 327   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 328     {
 329       const wxChar *path = node->GetData();
 330       wxStrcpy (wxFileFunctionsBuffer, path);
 331       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 332       if (ch != wxT('\\') && ch != wxT('/'))
 333         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 334       wxStrcat (wxFileFunctionsBuffer, filename);
 335 #ifdef __WINDOWS__
 336       wxUnix2DosFilename (wxFileFunctionsBuffer);
 337 #endif
 338       if (wxFileExists (wxFileFunctionsBuffer))
 339       {
 340         return wxString(wxFileFunctionsBuffer);        // Found!
 341       }
 342     }                                // for()
 343
 344   return wxEmptyString;                    // Not found
 345 }
 346
 347 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 348 {
 349     wxString f = FindValidPath(file);
 350     if ( f.empty() || wxIsAbsolutePath(f) )
 351         return f;
 352
 353     wxString buf;
 354     wxGetWorkingDirectory(wxStringBuffer(buf, _MAXPATHLEN), _MAXPATHLEN);
 355
 356     if ( !wxEndsWithPathSeparator(buf) )
 357     {
 358         buf += wxFILE_SEP_PATH;
 359     }
 360     buf += f;
 361
 362     return buf;
 363 }
 364
 365 bool
 366 wxFileExists (const wxString& filename)
 367 {
 368     // we must use GetFileAttributes() instead of the ANSI C functions because
 369     // it can cope with network (UNC) paths unlike them
 370 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 371     DWORD ret = ::GetFileAttributes(filename);
 372
 373     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 374 #else // !__WIN32__
 375     wxStructStat st;
 376     return wxStat(filename, &st) == 0 && (st.st_mode & S_IFREG);
 377 #endif // __WIN32__/!__WIN32__
 378 }
 379
 380 bool
 381 wxIsAbsolutePath (const wxString& filename)
 382 {
 383     if (filename != wxT(""))
 384     {
 385 #if defined(__WXMAC__) && !defined(__DARWIN__)
 386         // Classic or Carbon CodeWarrior like
 387         // Carbon with Apple DevTools is Unix like
 388
 389         // This seems wrong to me, but there is no fix. since
 390         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 391         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 392         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 393             return true ;
 394 #else
 395         // Unix like or Windows
 396         if (filename[0] == wxT('/'))
 397             return true;
 398 #endif
 399 #ifdef __VMS__
 400         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 401             return true;
 402 #endif
 403 #if defined(__WINDOWS__) || defined(__OS2__)
 404         // MSDOS like
 405         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 406             return true;
 407 #endif
 408     }
 409     return false ;
 410 }
 411
 412 /*
 413  * Strip off any extension (dot something) from end of file,
 414  * IF one exists. Inserts zero into buffer.
 415  *
 416  */
 417
 418 void wxStripExtension(wxChar *buffer)
 419 {
 420   int len = wxStrlen(buffer);
 421   int i = len-1;
 422   while (i > 0)
 423   {
 424     if (buffer[i] == wxT('.'))
 425     {
 426       buffer[i] = 0;
 427       break;
 428     }
 429     i --;
 430   }
 431 }
 432
 433 void wxStripExtension(wxString& buffer)
 434 {
 435   size_t len = buffer.Length();
 436   size_t i = len-1;
 437   while (i > 0)
 438   {
 439     if (buffer.GetChar(i) == wxT('.'))
 440     {
 441       buffer = buffer.Left(i);
 442       break;
 443     }
 444     i --;
 445   }
 446 }
 447
 448 // Destructive removal of /./ and /../ stuff
 449 wxChar *wxRealPath (wxChar *path)
 450 {
 451 #ifdef __WXMSW__
 452   static const wxChar SEP = wxT('\\');
 453   wxUnix2DosFilename(path);
 454 #else
 455   static const wxChar SEP = wxT('/');
 456 #endif
 457   if (path[0] && path[1]) {
 458     /* MATTHEW: special case "/./x" */
 459     wxChar *p;
 460     if (path[2] == SEP && path[1] == wxT('.'))
 461       p = &path[0];
 462     else
 463       p = &path[2];
 464     for (; *p; p++)
 465       {
 466         if (*p == SEP)
 467           {
 468             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 469               {
 470                 wxChar *q;
 471                 for (q = p - 1; q >= path && *q != SEP; q--)
 472                 {
 473                     // Empty
 474                 }
 475
 476                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 477                     && (q - 1 <= path || q[-1] != SEP))
 478                   {
 479                     wxStrcpy (q, p + 3);
 480                     if (path[0] == wxT('\0'))
 481                       {
 482                         path[0] = SEP;
 483                         path[1] = wxT('\0');
 484                       }
 485 #if defined(__WXMSW__) || defined(__OS2__)
 486                     /* Check that path[2] is NULL! */
 487                     else if (path[1] == wxT(':') && !path[2])
 488                       {
 489                         path[2] = SEP;
 490                         path[3] = wxT('\0');
 491                       }
 492 #endif
 493                     p = q - 1;
 494                   }
 495               }
 496             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 497               wxStrcpy (p, p + 2);
 498           }
 499       }
 500   }
 501   return path;
 502 }
 503
 504 // Must be destroyed
 505 wxChar *wxCopyAbsolutePath(const wxString& filename)
 506 {
 507   if (filename == wxT(""))
 508     return (wxChar *) NULL;
 509
 510   if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename))) {
 511     wxChar  buf[_MAXPATHLEN];
 512     buf[0] = wxT('\0');
 513     wxGetWorkingDirectory(buf, WXSIZEOF(buf));
 514     wxChar ch = buf[wxStrlen(buf) - 1];
 515 #ifdef __WXMSW__
 516     if (ch != wxT('\\') && ch != wxT('/'))
 517         wxStrcat(buf, wxT("\\"));
 518 #else
 519     if (ch != wxT('/'))
 520         wxStrcat(buf, wxT("/"));
 521 #endif
 522     wxStrcat(buf, wxFileFunctionsBuffer);
 523     return MYcopystring( wxRealPath(buf) );
 524   }
 525   return MYcopystring( wxFileFunctionsBuffer );
 526 }
 527
 528 /*-
 529  Handles:
 530    ~/ => home dir
 531    ~user/ => user's home dir
 532    If the environment variable a = "foo" and b = "bar" then:
 533    Unix:
 534         $a        =>        foo
 535         $a$b        =>        foobar
 536         $a.c        =>        foo.c
 537         xxx$a        =>        xxxfoo
 538         ${a}!        =>        foo!
 539         $(b)!        =>        bar!
 540         \$a        =>        \$a
 541    MSDOS:
 542         $a        ==>        $a
 543         $(a)        ==>        foo
 544         $(a)$b        ==>        foo$b
 545         $(a)$(b)==>        foobar
 546         test.$$        ==>        test.$$
 547  */
 548
 549 /* input name in name, pathname output to buf. */
 550
 551 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 552 {
 553     register wxChar *d, *s, *nm;
 554     wxChar          lnm[_MAXPATHLEN];
 555     int             q;
 556
 557     // Some compilers don't like this line.
 558 //    const wxChar    trimchars[] = wxT("\n \t");
 559
 560     wxChar      trimchars[4];
 561     trimchars[0] = wxT('\n');
 562     trimchars[1] = wxT(' ');
 563     trimchars[2] = wxT('\t');
 564     trimchars[3] = 0;
 565
 566 #ifdef __WXMSW__
 567     const wxChar     SEP = wxT('\\');
 568 #else
 569     const wxChar     SEP = wxT('/');
 570 #endif
 571     buf[0] = wxT('\0');
 572     if (name == NULL || *name == wxT('\0'))
 573         return buf;
 574     nm = MYcopystring(name); // Make a scratch copy
 575     wxChar *nm_tmp = nm;
 576
 577     /* Skip leading whitespace and cr */
 578     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 579         nm++;
 580     /* And strip off trailing whitespace and cr */
 581     s = nm + (q = wxStrlen(nm)) - 1;
 582     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 583         *s = wxT('\0');
 584
 585     s = nm;
 586     d = lnm;
 587 #ifdef __WXMSW__
 588     q = FALSE;
 589 #else
 590     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 591 #endif
 592
 593     /* Expand inline environment variables */
 594 #ifdef __VISAGECPP__
 595     while (*d)
 596     {
 597       *d++ = *s;
 598       if(*s == wxT('\\'))
 599       {
 600         *(d - 1) = *++s;
 601         if (*d)
 602         {
 603           s++;
 604           continue;
 605         }
 606         else
 607            break;
 608       }
 609       else
 610 #else
 611     while ((*d++ = *s) != 0) {
 612 #  ifndef __WXMSW__
 613         if (*s == wxT('\\')) {
 614             if ((*(d - 1) = *++s)) {
 615                 s++;
 616                 continue;
 617             } else
 618                 break;
 619         } else
 620 #  endif
 621 #endif
 622             // No env variables on WinCE
 623 #ifndef __WXWINCE__
 624 #ifdef __WXMSW__
 625         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 626 #else
 627         if (*s++ == wxT('$'))
 628 #endif
 629         {
 630             register wxChar  *start = d;
 631             register int     braces = (*s == wxT('{') || *s == wxT('('));
 632             register wxChar  *value;
 633             while ((*d++ = *s) != 0)
 634                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 635                     break;
 636                 else
 637                     s++;
 638             *--d = 0;
 639             value = wxGetenv(braces ? start + 1 : start);
 640             if (value) {
 641                 for ((d = start - 1); (*d++ = *value++) != 0;)
 642                 {
 643                     // Empty
 644                 }
 645
 646                 d--;
 647                 if (braces && *s)
 648                     s++;
 649             }
 650         }
 651 #endif
 652         // __WXWINCE__
 653     }
 654
 655     /* Expand ~ and ~user */
 656     nm = lnm;
 657     if (nm[0] == wxT('~') && !q)
 658     {
 659         /* prefix ~ */
 660         if (nm[1] == SEP || nm[1] == 0)
 661         {        /* ~/filename */
 662         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 663             if ((s = WXSTRINGCAST wxGetUserHome(wxT(""))) != NULL) {
 664                 if (*++nm)
 665                     nm++;
 666             }
 667         } else
 668         {                /* ~user/filename */
 669             register wxChar  *nnm;
 670             register wxChar  *home;
 671             for (s = nm; *s && *s != SEP; s++)
 672             {
 673                 // Empty
 674             }
 675             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 676             was_sep = (*s == SEP);
 677             nnm = *s ? s + 1 : s;
 678             *s = 0;
 679         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 680             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL) {
 681                if (was_sep) /* replace only if it was there: */
 682                    *s = SEP;
 683                 s = NULL;
 684             } else {
 685                 nm = nnm;
 686                 s = home;
 687             }
 688         }
 689     }
 690
 691     d = buf;
 692     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 693         /* Copy home dir */
 694         while (wxT('\0') != (*d++ = *s++))
 695           /* loop */;
 696         // Handle root home
 697         if (d - 1 > buf && *(d - 2) != SEP)
 698           *(d - 1) = SEP;
 699     }
 700     s = nm;
 701     while ((*d++ = *s++) != 0)
 702     {
 703         // Empty
 704     }
 705     delete[] nm_tmp; // clean up alloc
 706     /* Now clean up the buffer */
 707     return wxRealPath(buf);
 708 }
 709
 710 /* Contract Paths to be build upon an environment variable
 711    component:
 712
 713    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 714
 715    The call wxExpandPath can convert these back!
 716  */
 717 wxChar *
 718 wxContractPath (const wxString& filename, const wxString& envname, const wxString& user)
 719 {
 720   static wxChar dest[_MAXPATHLEN];
 721
 722   if (filename == wxT(""))
 723     return (wxChar *) NULL;
 724
 725   wxStrcpy (dest, WXSTRINGCAST filename);
 726 #ifdef __WXMSW__
 727   wxUnix2DosFilename(dest);
 728 #endif
 729
 730   // Handle environment
 731   const wxChar *val;
 732 #ifndef __WXWINCE__
 733   wxChar *tcp;
 734   if (envname != WXSTRINGCAST NULL && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 735      (tcp = wxStrstr (dest, val)) != NULL)
 736     {
 737         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 738         *tcp++ = wxT('$');
 739         *tcp++ = wxT('{');
 740         wxStrcpy (tcp, WXSTRINGCAST envname);
 741         wxStrcat (tcp, wxT("}"));
 742         wxStrcat (tcp, wxFileFunctionsBuffer);
 743     }
 744 #endif
 745
 746   // Handle User's home (ignore root homes!)
 747   val = wxGetUserHome (user);
 748   if (!val)
 749     return dest;
 750
 751   const size_t len = wxStrlen(val);
 752   if (len <= 2)
 753     return dest;
 754
 755   if (wxStrncmp(dest, val, len) == 0)
 756   {
 757     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 758     if (user != wxT(""))
 759            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 760     wxStrcat(wxFileFunctionsBuffer, dest + len);
 761     wxStrcpy (dest, wxFileFunctionsBuffer);
 762   }
 763
 764   return dest;
 765 }
 766
 767 // Return just the filename, not the path (basename)
 768 wxChar *wxFileNameFromPath (wxChar *path)
 769 {
 770     wxString p = path;
 771     wxString n = wxFileNameFromPath(p);
 772
 773     return path + p.length() - n.length();
 774 }
 775
 776 wxString wxFileNameFromPath (const wxString& path)
 777 {
 778     wxString name, ext;
 779     wxFileName::SplitPath(path, NULL, &name, &ext);
 780
 781     wxString fullname = name;
 782     if ( !ext.empty() )
 783     {
 784         fullname << wxFILE_SEP_EXT << ext;
 785     }
 786
 787     return fullname;
 788 }
 789
 790 // Return just the directory, or NULL if no directory
 791 wxChar *
 792 wxPathOnly (wxChar *path)
 793 {
 794     if (path && *path)
 795     {
 796         static wxChar buf[_MAXPATHLEN];
 797
 798         // Local copy
 799         wxStrcpy (buf, path);
 800
 801         int l = wxStrlen(path);
 802         int i = l - 1;
 803
 804         // Search backward for a backward or forward slash
 805         while (i > -1)
 806         {
 807 #if defined(__WXMAC__) && !defined(__DARWIN__)
 808             // Classic or Carbon CodeWarrior like
 809             // Carbon with Apple DevTools is Unix like
 810             if (path[i] == wxT(':') )
 811             {
 812                 buf[i] = 0;
 813                 return buf;
 814             }
 815 #else
 816             // Unix like or Windows
 817             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 818             {
 819                 buf[i] = 0;
 820                 return buf;
 821             }
 822 #endif
 823 #ifdef __VMS__
 824             if (path[i] == wxT(']'))
 825             {
 826                 buf[i+1] = 0;
 827                 return buf;
 828             }
 829 #endif
 830             i --;
 831         }
 832
 833 #if defined(__WXMSW__) || defined(__OS2__)
 834         // Try Drive specifier
 835         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 836         {
 837             // A:junk --> A:. (since A:.\junk Not A:\junk)
 838             buf[2] = wxT('.');
 839             buf[3] = wxT('\0');
 840             return buf;
 841         }
 842 #endif
 843     }
 844     return (wxChar *) NULL;
 845 }
 846
 847 // Return just the directory, or NULL if no directory
 848 wxString wxPathOnly (const wxString& path)
 849 {
 850     if (path != wxT(""))
 851     {
 852         wxChar buf[_MAXPATHLEN];
 853
 854         // Local copy
 855         wxStrcpy (buf, WXSTRINGCAST path);
 856
 857         int l = path.Length();
 858         int i = l - 1;
 859
 860         // Search backward for a backward or forward slash
 861         while (i > -1)
 862         {
 863 #if defined(__WXMAC__) && !defined(__DARWIN__)
 864             // Classic or Carbon CodeWarrior like
 865             // Carbon with Apple DevTools is Unix like
 866             if (path[i] == wxT(':') )
 867             {
 868                 buf[i] = 0;
 869                 return wxString(buf);
 870             }
 871 #else
 872             // Unix like or Windows
 873             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 874             {
 875                 // Don't return an empty string
 876                 if (i == 0)
 877                     i ++;
 878                 buf[i] = 0;
 879                 return wxString(buf);
 880             }
 881 #endif
 882 #ifdef __VMS__
 883             if (path[i] == wxT(']'))
 884             {
 885                 buf[i+1] = 0;
 886                 return wxString(buf);
 887             }
 888 #endif
 889             i --;
 890         }
 891
 892 #if defined(__WXMSW__) || defined(__OS2__)
 893         // Try Drive specifier
 894         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 895         {
 896             // A:junk --> A:. (since A:.\junk Not A:\junk)
 897             buf[2] = wxT('.');
 898             buf[3] = wxT('\0');
 899             return wxString(buf);
 900         }
 901 #endif
 902     }
 903     return wxString(wxT(""));
 904 }
 905
 906 // Utility for converting delimiters in DOS filenames to UNIX style
 907 // and back again - or we get nasty problems with delimiters.
 908 // Also, convert to lower case, since case is significant in UNIX.
 909
 910 #if defined(__WXMAC__)
 911
 912 #if TARGET_API_MAC_OSX
 913 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 914 #else
 915 #define kDefaultPathStyle kCFURLHFSPathStyle
 916 #endif
 917
 918 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 919 {
 920     CFURLRef fullURLRef;
 921     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 922     if ( additionalPathComponent )
 923     {
 924         CFURLRef parentURLRef = fullURLRef ;
 925         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 926             additionalPathComponent,false);
 927         CFRelease( parentURLRef ) ;
 928     }
 929     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 930     CFRelease( fullURLRef ) ;
 931     return wxMacCFStringHolder(cfString).AsString(wxLocale::GetSystemEncoding());
 932 }
 933
 934 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 935 {
 936     OSStatus err = noErr ;
 937     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) , kDefaultPathStyle, false);
 938     if ( NULL != url )
 939     {
 940         if ( CFURLGetFSRef(url, fsRef) == false )
 941             err = fnfErr ;
 942         CFRelease( url ) ;
 943     }
 944     else
 945     {
 946         err = fnfErr ;
 947     }
 948     return err ;
 949 }
 950
 951 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 952 {
 953     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 954                                                       uniname->unicode,
 955                                                       uniname->length );
 956     return wxMacCFStringHolder(cfname).AsString() ;
 957 }
 958
 959 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 960 {
 961     FSRef fsRef ;
 962     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 963     {
 964         return wxMacFSRefToPath( &fsRef ) ;
 965     }
 966     return wxEmptyString ;
 967 }
 968
 969 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 970 {
 971     OSStatus err = noErr ;
 972     FSRef fsRef ;
 973     wxMacPathToFSRef( path , &fsRef ) ;
 974     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 975 }
 976
 977 #endif // __WXMAC__
 978
 979 void
 980 wxDos2UnixFilename (wxChar *s)
 981 {
 982   if (s)
 983     while (*s)
 984       {
 985         if (*s == _T('\\'))
 986           *s = _T('/');
 987 #ifdef __WXMSW__
 988         else
 989           *s = wxTolower (*s);        // Case INDEPENDENT
 990 #endif
 991         s++;
 992       }
 993 }
 994
 995 void
 996 #if defined(__WXMSW__) || defined(__OS2__)
 997 wxUnix2DosFilename (wxChar *s)
 998 #else
 999 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
1000 #endif
1001 {
1002 // Yes, I really mean this to happen under DOS only! JACS
1003 #if defined(__WXMSW__) || defined(__OS2__)
1004   if (s)
1005     while (*s)
1006       {
1007         if (*s == wxT('/'))
1008           *s = wxT('\\');
1009         s++;
1010       }
1011 #endif
1012 }
1013
1014 // Concatenate two files to form third
1015 bool
1016 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
1017 {
1018   wxString outfile;
1019   if ( !wxGetTempFileName( wxT("cat"), outfile) )
1020       return false;
1021
1022   FILE *fp1 wxDUMMY_INITIALIZE(NULL);
1023   FILE *fp2 = NULL;
1024   FILE *fp3 = NULL;
1025   // Open the inputs and outputs
1026   if ((fp1 = wxFopen ( file1, wxT("rb"))) == NULL ||
1027       (fp2 = wxFopen ( file2, wxT("rb"))) == NULL ||
1028       (fp3 = wxFopen ( outfile, wxT("wb"))) == NULL)
1029     {
1030       if (fp1)
1031         fclose (fp1);
1032       if (fp2)
1033         fclose (fp2);
1034       if (fp3)
1035         fclose (fp3);
1036       return false;
1037     }
1038
1039   int ch;
1040   while ((ch = getc (fp1)) != EOF)
1041     (void) putc (ch, fp3);
1042   fclose (fp1);
1043
1044   while ((ch = getc (fp2)) != EOF)
1045     (void) putc (ch, fp3);
1046   fclose (fp2);
1047
1048   fclose (fp3);
1049   bool result = wxRenameFile(outfile, file3);
1050   return result;
1051 }
1052
1053 // Copy files
1054 bool
1055 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
1056 {
1057 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1058     // CopyFile() copies file attributes and modification time too, so use it
1059     // instead of our code if available
1060     //
1061     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1062     if ( !::CopyFile(file1, file2, !overwrite) )
1063     {
1064         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1065                       file1.c_str(), file2.c_str());
1066
1067         return false;
1068     }
1069 #elif defined(__OS2__)
1070     if ( ::DosCopy(file2, file2, overwrite ? DCPY_EXISTING : 0) != 0 )
1071         return false;
1072 #else // !Win32
1073
1074     wxStructStat fbuf;
1075     // get permissions of file1
1076     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1077     {
1078         // the file probably doesn't exist or we haven't the rights to read
1079         // from it anyhow
1080         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1081                       file1.c_str());
1082         return false;
1083     }
1084
1085     // open file1 for reading
1086     wxFile fileIn(file1, wxFile::read);
1087     if ( !fileIn.IsOpened() )
1088         return false;
1089
1090     // remove file2, if it exists. This is needed for creating
1091     // file2 with the correct permissions in the next step
1092     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1093     {
1094         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1095                       file2.c_str());
1096         return false;
1097     }
1098
1099 #ifdef __UNIX__
1100     // reset the umask as we want to create the file with exactly the same
1101     // permissions as the original one
1102     mode_t oldUmask = umask( 0 );
1103 #endif // __UNIX__
1104
1105     // create file2 with the same permissions than file1 and open it for
1106     // writing
1107
1108     wxFile fileOut;
1109     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1110         return false;
1111
1112 #ifdef __UNIX__
1113     /// restore the old umask
1114     umask(oldUmask);
1115 #endif // __UNIX__
1116
1117     // copy contents of file1 to file2
1118     char buf[4096];
1119     size_t count;
1120     for ( ;; )
1121     {
1122         count = fileIn.Read(buf, WXSIZEOF(buf));
1123         if ( fileIn.Error() )
1124             return false;
1125
1126         // end of file?
1127         if ( !count )
1128             break;
1129
1130         if ( fileOut.Write(buf, count) < count )
1131             return false;
1132     }
1133
1134     // we can expect fileIn to be closed successfully, but we should ensure
1135     // that fileOut was closed as some write errors (disk full) might not be
1136     // detected before doing this
1137     if ( !fileIn.Close() || !fileOut.Close() )
1138         return false;
1139
1140 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1141     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1142     // however
1143     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1144     {
1145         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1146                       file2.c_str());
1147         return false;
1148     }
1149 #endif // OS/2 || Mac
1150 #endif // __WXMSW__ && __WIN32__
1151
1152     return true;
1153 }
1154
1155 bool
1156 wxRenameFile (const wxString& file1, const wxString& file2)
1157 {
1158 #ifndef __WXWINCE__
1159     // Normal system call
1160   if ( wxRename (file1, file2) == 0 )
1161     return true;
1162 #endif
1163
1164   // Try to copy
1165   if (wxCopyFile(file1, file2)) {
1166     wxRemoveFile(file1);
1167     return true;
1168   }
1169   // Give up
1170   return false;
1171 }
1172
1173 bool wxRemoveFile(const wxString& file)
1174 {
1175 #if defined(__VISUALC__) \
1176  || defined(__BORLANDC__) \
1177  || defined(__WATCOMC__) \
1178  || defined(__DMC__) \
1179  || defined(__GNUWIN32__) \
1180  || (defined(__MWERKS__) && defined(__MSL__))
1181   int res = wxRemove(file);
1182 #elif defined(__WXMAC__)
1183   int res = unlink(wxFNCONV(file));
1184 #else
1185   int res = unlink(OS_FILENAME(file));
1186 #endif
1187
1188   return res == 0;
1189 }
1190
1191 bool wxMkdir(const wxString& dir, int perm)
1192 {
1193 #if defined(__WXMAC__) && !defined(__UNIX__)
1194   return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1195 #else // !Mac
1196     const wxChar *dirname = dir.c_str();
1197
1198     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1199     // for the GNU compiler
1200 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1201   #if defined(MSVCRT)
1202     wxUnusedVar(perm);
1203     if ( mkdir(wxFNCONV(dirname)) != 0 )
1204   #else
1205     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1206   #endif
1207 #elif defined(__OS2__)
1208     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1209 #elif defined(__DOS__)
1210   #if defined(__WATCOMC__)
1211     (void)perm;
1212     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1213   #elif defined(__DJGPP__)
1214     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1215   #else
1216     #error "Unsupported DOS compiler!"
1217   #endif
1218 #else  // !MSW, !DOS and !OS/2 VAC++
1219     (void)perm;
1220 #ifdef __WXWINCE__
1221     if ( !CreateDirectory(dirname, NULL) )
1222 #else
1223     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1224 #endif
1225 #endif // !MSW/MSW
1226     {
1227         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1228
1229         return false;
1230     }
1231
1232     return true;
1233 #endif // Mac/!Mac
1234 }
1235
1236 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1237 {
1238 #ifdef __VMS__
1239     return false; //to be changed since rmdir exists in VMS7.x
1240 #elif defined(__OS2__)
1241     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1242 #else
1243
1244 #ifdef __WXWINCE__
1245     return (CreateDirectory(dir, NULL) != 0);
1246 #else
1247     return (wxRmDir(OS_FILENAME(dir)) == 0);
1248 #endif
1249
1250 #endif
1251 }
1252
1253 // does the path exists? (may have or not '/' or '\\' at the end)
1254 bool wxPathExists(const wxChar *pszPathName)
1255 {
1256     wxString strPath(pszPathName);
1257
1258 #if defined(__WINDOWS__) || defined(__OS2__)
1259     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1260     // so remove all trailing backslashes from the path - but don't do this for
1261     // the pathes "d:\" (which are different from "d:") nor for just "\"
1262     while ( wxEndsWithPathSeparator(strPath) )
1263     {
1264         size_t len = strPath.length();
1265         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1266             break;
1267
1268         strPath.Truncate(len - 1);
1269     }
1270 #endif // __WINDOWS__
1271
1272 #ifdef __OS2__
1273     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1274     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1275         strPath << _T('.');
1276 #endif
1277
1278 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1279     // stat() can't cope with network paths
1280     DWORD ret = ::GetFileAttributes(strPath);
1281
1282     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1283 #else // !__WIN32__
1284
1285     wxStructStat st;
1286 #ifndef __VISAGECPP__
1287     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1288 #else
1289     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1290     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1291 #endif
1292
1293 #endif // __WIN32__/!__WIN32__
1294 }
1295
1296 // Get a temporary filename, opening and closing the file.
1297 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1298 {
1299     wxString filename = wxFileName::CreateTempFileName(prefix);
1300     if ( filename.empty() )
1301         return NULL;
1302
1303     if ( buf )
1304         wxStrcpy(buf, filename);
1305     else
1306         buf = MYcopystring(filename);
1307
1308     return buf;
1309 }
1310
1311 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1312 {
1313     buf = wxFileName::CreateTempFileName(prefix);
1314
1315     return !buf.empty();
1316 }
1317
1318 // Get first file name matching given wild card.
1319
1320 static wxDir *gs_dir = NULL;
1321 static wxString gs_dirPath;
1322
1323 wxString wxFindFirstFile(const wxChar *spec, int flags)
1324 {
1325     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1326     if ( gs_dirPath.IsEmpty() )
1327         gs_dirPath = wxT(".");
1328     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1329         gs_dirPath << wxFILE_SEP_PATH;
1330
1331     if (gs_dir)
1332         delete gs_dir;
1333     gs_dir = new wxDir(gs_dirPath);
1334
1335     if ( !gs_dir->IsOpened() )
1336     {
1337         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1338         return wxEmptyString;
1339     }
1340
1341     int dirFlags;
1342     switch (flags)
1343     {
1344         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1345         case wxFILE: dirFlags = wxDIR_FILES; break;
1346         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1347     }
1348
1349     wxString result;
1350     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1351     if ( result.IsEmpty() )
1352     {
1353         wxDELETE(gs_dir);
1354         return result;
1355     }
1356
1357     return gs_dirPath + result;
1358 }
1359
1360 wxString wxFindNextFile()
1361 {
1362     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1363
1364     wxString result;
1365     gs_dir->GetNext(&result);
1366
1367     if ( result.IsEmpty() )
1368     {
1369         wxDELETE(gs_dir);
1370         return result;
1371     }
1372
1373     return gs_dirPath + result;
1374 }
1375
1376
1377 // Get current working directory.
1378 // If buf is NULL, allocates space using new, else
1379 // copies into buf.
1380 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1381 {
1382 #ifdef __WXWINCE__
1383     return NULL;
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         // This is not legal code as the compiler
1401         // is allowed destroy the wxCharBuffer.
1402         // wxCharBuffer c_buffer(sz);
1403         // char *cbuf = (char*)(const char*)c_buffer;
1404         char cbuf[_MAXPATHLEN];
1405     #endif
1406
1407     #ifdef HAVE_WGETCWD
1408         #if wxUSE_UNICODE_MSLU
1409             if ( wxGetOsVersion() != wxWIN95 )
1410         #else
1411             char *cbuf = NULL; // never really used because needsANSI will always be false
1412         #endif
1413             {
1414                 ok = _wgetcwd(buf, sz) != NULL;
1415                 needsANSI = false;
1416             }
1417     #endif
1418
1419     if ( needsANSI )
1420 #endif // wxUSE_UNICODE
1421     {
1422     #if defined(_MSC_VER) || defined(__MINGW32__)
1423         ok = _getcwd(cbuf, sz) != NULL;
1424     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1425         char lbuf[1024] ;
1426         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1427         {
1428             wxString res( lbuf , *wxConvCurrent ) ;
1429             wxStrcpy( buf , res ) ;
1430             ok = true;
1431         }
1432         else
1433             ok = false ;
1434     #elif defined(__OS2__)
1435         APIRET rc;
1436         ULONG ulDriveNum = 0;
1437         ULONG ulDriveMap = 0;
1438         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1439         ok = rc == 0;
1440         if (ok)
1441         {
1442             sz -= 3;
1443             rc = ::DosQueryCurrentDir( 0 // current drive
1444                                       ,cbuf + 3
1445                                       ,(PULONG)&sz
1446                                      );
1447             cbuf[0] = 'A' + (ulDriveNum - 1);
1448             cbuf[1] = ':';
1449             cbuf[2] = '\\';
1450             ok = rc == 0;
1451         }
1452     #else // !Win32/VC++ !Mac !OS2
1453         ok = getcwd(cbuf, sz) != NULL;
1454     #endif // platform
1455
1456     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1457         // finally convert the result to Unicode if needed
1458         wxConvFile.MB2WC(buf, cbuf, sz);
1459     #endif // wxUSE_UNICODE
1460     }
1461
1462     if ( !ok )
1463     {
1464         wxLogSysError(_("Failed to get the working directory"));
1465
1466         // VZ: the old code used to return "." on error which didn't make any
1467         //     sense at all to me - empty string is a better error indicator
1468         //     (NULL might be even better but I'm afraid this could lead to
1469         //     problems with the old code assuming the return is never NULL)
1470         buf[0] = _T('\0');
1471     }
1472     else // ok, but we might need to massage the path into the right format
1473     {
1474 #ifdef __DJGPP__
1475         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1476         //     with / deliminers. We don't like that.
1477         for (wxChar *ch = buf; *ch; ch++)
1478         {
1479             if (*ch == wxT('/'))
1480                 *ch = wxT('\\');
1481         }
1482 #endif // __DJGPP__
1483
1484 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1485 //      he needs Unix as opposed to Win32 pathnames
1486 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1487         // another example of DOS/Unix mix (Cygwin)
1488         wxString pathUnix = buf;
1489         cygwin_conv_to_full_win32_path(pathUnix, buf);
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 wxString wxGetCwd()
1504 {
1505     wxChar *buffer = new wxChar[_MAXPATHLEN];
1506     wxGetWorkingDirectory(buffer, _MAXPATHLEN);
1507     wxString str( buffer );
1508     delete [] buffer;
1509
1510     return str;
1511 }
1512
1513 bool wxSetWorkingDirectory(const wxString& d)
1514 {
1515 #if defined(__OS2__)
1516     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1517 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1518     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1519 #elif defined(__WINDOWS__)
1520
1521 #ifdef __WIN32__
1522 #ifdef __WXWINCE__
1523     // No equivalent in WinCE
1524     return false;
1525 #else
1526     return (bool)(SetCurrentDirectory(d) != 0);
1527 #endif
1528 #else
1529     // Must change drive, too.
1530     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1531     if (isDriveSpec)
1532     {
1533         wxChar firstChar = d[0];
1534
1535         // To upper case
1536         if (firstChar > 90)
1537             firstChar = firstChar - 32;
1538
1539         // To a drive number
1540         unsigned int driveNo = firstChar - 64;
1541         if (driveNo > 0)
1542         {
1543             unsigned int noDrives;
1544             _dos_setdrive(driveNo, &noDrives);
1545         }
1546     }
1547     bool success = (chdir(WXSTRINGCAST d) == 0);
1548
1549     return success;
1550 #endif
1551
1552 #endif
1553 }
1554
1555 // Get the OS directory if appropriate (such as the Windows directory).
1556 // On non-Windows platform, probably just return the empty string.
1557 wxString wxGetOSDirectory()
1558 {
1559 #ifdef __WXWINCE__
1560     return wxString(wxT("\\Windows"));
1561 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1562     wxChar buf[256];
1563     GetWindowsDirectory(buf, 256);
1564     return wxString(buf);
1565 #elif defined(__WXMAC__)
1566     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1567 #else
1568     return wxEmptyString;
1569 #endif
1570 }
1571
1572 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1573 {
1574     size_t len = wxStrlen(pszFileName);
1575
1576     return len && wxIsPathSeparator(pszFileName[len - 1]);
1577 }
1578
1579 // find a file in a list of directories, returns false if not found
1580 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1581 {
1582     // we assume that it's not empty
1583     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1584                  _T("empty file name in wxFindFileInPath"));
1585
1586     // skip path separator in the beginning of the file name if present
1587     if ( wxIsPathSeparator(*pszFile) )
1588         pszFile++;
1589
1590     // copy the path (strtok will modify it)
1591     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1592     wxStrcpy(szPath, pszPath);
1593
1594     wxString strFile;
1595     wxChar *pc, *save_ptr;
1596     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1597           pc != NULL;
1598           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1599     {
1600         // search for the file in this directory
1601         strFile = pc;
1602         if ( !wxEndsWithPathSeparator(pc) )
1603             strFile += wxFILE_SEP_PATH;
1604         strFile += pszFile;
1605
1606         if ( wxFileExists(strFile) ) {
1607             *pStr = strFile;
1608             break;
1609         }
1610     }
1611
1612     // suppress warning about unused variable save_ptr when wxStrtok() is a
1613     // macro which throws away its third argument
1614     save_ptr = pc;
1615
1616     delete [] szPath;
1617
1618     return pc != NULL;  // if true => we breaked from the loop
1619 }
1620
1621 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1622                              wxString *pstrPath,
1623                              wxString *pstrName,
1624                              wxString *pstrExt)
1625 {
1626     // it can be empty, but it shouldn't be NULL
1627     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1628
1629     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1630 }
1631
1632 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1633 {
1634 #ifdef __WXWINCE__
1635     FILETIME creationTime, lastAccessTime, lastWriteTime;
1636     HANDLE fileHandle = ::CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
1637         0, FILE_ATTRIBUTE_NORMAL, 0);
1638     if (fileHandle == INVALID_HANDLE_VALUE)
1639         return 0;
1640     else
1641     {
1642         if (GetFileTime(fileHandle, & creationTime, & lastAccessTime, & lastWriteTime))
1643         {
1644             CloseHandle(fileHandle);
1645
1646             wxDateTime dateTime;
1647             FILETIME ftLocal;
1648             if ( !::FileTimeToLocalFileTime(&lastWriteTime, &ftLocal) )
1649             {
1650                 wxLogLastError(_T("FileTimeToLocalFileTime"));
1651             }
1652
1653             SYSTEMTIME st;
1654             if ( !::FileTimeToSystemTime(&ftLocal, &st) )
1655             {
1656                 wxLogLastError(_T("FileTimeToSystemTime"));
1657             }
1658
1659             dateTime.Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
1660                 st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
1661             return dateTime.GetTicks();
1662         }
1663         else
1664             return 0;
1665     }
1666 #else
1667     wxStructStat buf;
1668     wxStat( filename, &buf);
1669
1670     return buf.st_mtime;
1671 #endif
1672 }
1673
1674
1675 // Parses the filterStr, returning the number of filters.
1676 // Returns 0 if none or if there's a problem.
1677 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpeg"
1678
1679 int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr, wxArrayString& descriptions, wxArrayString& filters)
1680 {
1681     descriptions.Clear();
1682     filters.Clear();
1683
1684     wxString str(filterStr);
1685
1686     wxString description, filter;
1687     int pos = 0;
1688     while( pos != wxNOT_FOUND )
1689     {
1690         pos = str.Find(wxT('|'));
1691         if ( pos == wxNOT_FOUND )
1692         {
1693             // if there are no '|'s at all in the string just take the entire
1694             // string as filter and make description empty for later autocompletion
1695             if ( filters.IsEmpty() )
1696             {
1697                 descriptions.Add(wxEmptyString);
1698                 filters.Add(filterStr);
1699             }
1700             else
1701             {
1702                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1703             }
1704
1705             break;
1706         }
1707
1708         description = str.Left(pos);
1709         str = str.Mid(pos + 1);
1710         pos = str.Find(wxT('|'));
1711         if ( pos == wxNOT_FOUND )
1712         {
1713             filter = str;
1714         }
1715         else
1716         {
1717             filter = str.Left(pos);
1718             str = str.Mid(pos + 1);
1719         }
1720
1721         descriptions.Add(description);
1722         filters.Add(filter);
1723     }
1724
1725 #if defined(__WXMOTIF__)
1726     // split it so there is one wildcard per entry
1727     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1728     {
1729         pos = filters[i].Find(wxT(';'));
1730         if (pos != wxNOT_FOUND)
1731         {
1732             // first split only filters
1733             descriptions.Insert(descriptions[i],i+1);
1734             filters.Insert(filters[i].Mid(pos+1),i+1);
1735             filters[i]=filters[i].Left(pos);
1736
1737             // autoreplace new filter in description with pattern:
1738             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1739             // cause split into:
1740             //     C/C++ Files(*.cpp)|*.cpp
1741             //     C/C++ Files(*.c;*.h)|*.c;*.h
1742             // and next iteration cause another split into:
1743             //     C/C++ Files(*.cpp)|*.cpp
1744             //     C/C++ Files(*.c)|*.c
1745             //     C/C++ Files(*.h)|*.h
1746             for ( size_t k=i;k<i+2;k++ )
1747             {
1748                 pos = descriptions[k].Find(filters[k]);
1749                 if (pos != wxNOT_FOUND)
1750                 {
1751                     wxString before = descriptions[k].Left(pos);
1752                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1753                     pos = before.Find(_T('('),true);
1754                     if (pos>before.Find(_T(')'),true))
1755                     {
1756                         before = before.Left(pos+1);
1757                         before << filters[k];
1758                         pos = after.Find(_T(')'));
1759                         int pos1 = after.Find(_T('('));
1760                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1761                         {
1762                             before << after.Mid(pos);
1763                             descriptions[k] = before;
1764                         }
1765                     }
1766                 }
1767             }
1768         }
1769     }
1770 #endif
1771
1772     // autocompletion
1773     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1774     {
1775         if ( descriptions[j] == wxEmptyString && filters[j] != wxEmptyString )
1776         {
1777             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1778         }
1779     }
1780
1781     return filters.GetCount();
1782 }
1783
1784
1785 //------------------------------------------------------------------------
1786 // wild character routines
1787 //------------------------------------------------------------------------
1788
1789 bool wxIsWild( const wxString& pattern )
1790 {
1791     wxString tmp = pattern;
1792     wxChar *pat = WXSTRINGCAST(tmp);
1793     while (*pat)
1794     {
1795         switch (*pat++)
1796         {
1797         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1798             return true;
1799         case wxT('\\'):
1800             if (!*pat++)
1801                 return false;
1802         }
1803     }
1804     return false;
1805 }
1806
1807 /*
1808 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1809 *
1810 * The match procedure is public domain code (from ircII's reg.c)
1811 */
1812
1813 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1814 {
1815         if (text.empty())
1816         {
1817                 /* Match if both are empty. */
1818                 return pat.empty();
1819         }
1820
1821         const wxChar *m = pat.c_str(),
1822         *n = text.c_str(),
1823         *ma = NULL,
1824         *na = NULL,
1825         *mp = NULL,
1826         *np = NULL;
1827         int just = 0,
1828         pcount = 0,
1829         acount = 0,
1830         count = 0;
1831
1832         if (dot_special && (*n == wxT('.')))
1833         {
1834                 /* Never match so that hidden Unix files
1835                  * are never found. */
1836                 return false;
1837         }
1838
1839         for (;;)
1840         {
1841                 if (*m == wxT('*'))
1842                 {
1843                         ma = ++m;
1844                         na = n;
1845                         just = 1;
1846                         mp = NULL;
1847                         acount = count;
1848                 }
1849                 else if (*m == wxT('?'))
1850                 {
1851                         m++;
1852                         if (!*n++)
1853                         return false;
1854                 }
1855                 else
1856                 {
1857                         if (*m == wxT('\\'))
1858                         {
1859                                 m++;
1860                                 /* Quoting "nothing" is a bad thing */
1861                                 if (!*m)
1862                                 return false;
1863                         }
1864                         if (!*m)
1865                         {
1866                                 /*
1867                                 * If we are out of both strings or we just
1868                                 * saw a wildcard, then we can say we have a
1869                                 * match
1870                                 */
1871                                 if (!*n)
1872                                 return true;
1873                                 if (just)
1874                                 return true;
1875                                 just = 0;
1876                                 goto not_matched;
1877                         }
1878                         /*
1879                         * We could check for *n == NULL at this point, but
1880                         * since it's more common to have a character there,
1881                         * check to see if they match first (m and n) and
1882                         * then if they don't match, THEN we can check for
1883                         * the NULL of n
1884                         */
1885                         just = 0;
1886                         if (*m == *n)
1887                         {
1888                                 m++;
1889                                 if (*n == wxT(' '))
1890                                 mp = NULL;
1891                                 count++;
1892                                 n++;
1893                         }
1894                         else
1895                         {
1896
1897                                 not_matched:
1898
1899                                 /*
1900                                 * If there are no more characters in the
1901                                 * string, but we still need to find another
1902                                 * character (*m != NULL), then it will be
1903                                 * impossible to match it
1904                                 */
1905                                 if (!*n)
1906                                 return false;
1907                                 if (mp)
1908                                 {
1909                                         m = mp;
1910                                         if (*np == wxT(' '))
1911                                         {
1912                                                 mp = NULL;
1913                                                 goto check_percent;
1914                                         }
1915                                         n = ++np;
1916                                         count = pcount;
1917                                 }
1918                                 else
1919                                 check_percent:
1920
1921                                 if (ma)
1922                                 {
1923                                         m = ma;
1924                                         n = ++na;
1925                                         count = acount;
1926                                 }
1927                                 else
1928                                 return false;
1929                         }
1930                 }
1931         }
1932 }
1933
1934
1935 #ifdef __VISUALC__
1936     #pragma warning(default:4706)   // assignment within conditional expression
1937 #endif // VC++