src/common/filefn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/filefn.cpp
   3 // Purpose:     File- and directory-related functions
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/intl.h"
  29     #include "wx/log.h"
  30     #include "wx/utils.h"
  31 #endif
  32
  33 #include "wx/file.h" // This does include filefn.h
  34 #include "wx/filename.h"
  35 #include "wx/dir.h"
  36
  37 // there are just too many of those...
  38 #ifdef __VISUALC__
  39     #pragma warning(disable:4706)   // assignment within conditional expression
  40 #endif // VC++
  41
  42 #include <ctype.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #if !wxONLY_WATCOM_EARLIER_THAN(1,4)
  47     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  48         #include <errno.h>
  49     #endif
  50 #endif
  51
  52 #if defined(__WXMAC__)
  53     #include  "wx/mac/private.h"  // includes mac headers
  54 #endif
  55
  56 #ifdef __WINDOWS__
  57     #include "wx/msw/private.h"
  58     #include "wx/msw/mslu.h"
  59
  60     // sys/cygwin.h is needed for cygwin_conv_to_full_win32_path()
  61     //
  62     // note that it must be included after <windows.h>
  63     #ifdef __GNUWIN32__
  64         #ifdef __CYGWIN__
  65             #include <sys/cygwin.h>
  66         #endif
  67     #endif // __GNUWIN32__
  68
  69     // io.h is needed for _get_osfhandle()
  70     // Already included by filefn.h for many Windows compilers
  71     #if defined __MWERKS__ || defined __CYGWIN__
  72         #include <io.h>
  73     #endif
  74 #endif // __WINDOWS__
  75
  76 #if defined(__VMS__)
  77     #include <fab.h>
  78 #endif
  79
  80 // TODO: Borland probably has _wgetcwd as well?
  81 #ifdef _MSC_VER
  82     #define HAVE_WGETCWD
  83 #endif
  84
  85 // ----------------------------------------------------------------------------
  86 // constants
  87 // ----------------------------------------------------------------------------
  88
  89 #ifndef _MAXPATHLEN
  90     #define _MAXPATHLEN 1024
  91 #endif
  92
  93 #ifdef __WXMAC__
  94 #    include "MoreFilesX.h"
  95 #endif
  96
  97 // ----------------------------------------------------------------------------
  98 // private globals
  99 // ----------------------------------------------------------------------------
 100
 101 // MT-FIXME: get rid of this horror and all code using it
 102 static wxChar wxFileFunctionsBuffer[4*_MAXPATHLEN];
 103
 104 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 105 //
 106 // VisualAge C++ V4.0 cannot have any external linkage const decs
 107 // in headers included by more than one primary source
 108 //
 109 const int wxInvalidOffset = -1;
 110 #endif
 111
 112 // ----------------------------------------------------------------------------
 113 // macros
 114 // ----------------------------------------------------------------------------
 115
 116 // we need to translate Mac filenames before passing them to OS functions
 117 #define OS_FILENAME(s) (s.fn_str())
 118
 119 // ============================================================================
 120 // implementation
 121 // ============================================================================
 122
 123 #ifdef wxNEED_WX_UNISTD_H
 124
 125 WXDLLEXPORT int wxStat( const wxChar *file_name, wxStructStat *buf )
 126 {
 127     return stat( wxConvFile.cWX2MB( file_name ), buf );
 128 }
 129
 130 WXDLLEXPORT int wxAccess( const wxChar *pathname, int mode )
 131 {
 132     return access( wxConvFile.cWX2MB( pathname ), mode );
 133 }
 134
 135 WXDLLEXPORT int wxOpen( const wxChar *pathname, int flags, mode_t mode )
 136 {
 137     return open( wxConvFile.cWX2MB( pathname ), flags, mode );
 138 }
 139
 140 #endif
 141    // wxNEED_WX_UNISTD_H
 142
 143 // ----------------------------------------------------------------------------
 144 // wxPathList
 145 // ----------------------------------------------------------------------------
 146
 147 // IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
 148
 149 static inline wxChar* MYcopystring(const wxString& s)
 150 {
 151     wxChar* copy = new wxChar[s.length() + 1];
 152     return wxStrcpy(copy, s.c_str());
 153 }
 154
 155 static inline wxChar* MYcopystring(const wxChar* s)
 156 {
 157     wxChar* copy = new wxChar[wxStrlen(s) + 1];
 158     return wxStrcpy(copy, s);
 159 }
 160
 161 void wxPathList::Add (const wxString& path)
 162 {
 163     wxStringList::Add (WXSTRINGCAST path);
 164 }
 165
 166 // Add paths e.g. from the PATH environment variable
 167 void wxPathList::AddEnvList (const wxString& WXUNUSED_IN_WINCE(envVariable))
 168 {
 169     // No environment variables on WinCE
 170 #ifndef __WXWINCE__
 171     static const wxChar PATH_TOKS[] =
 172 #if defined(__WINDOWS__) || defined(__OS2__)
 173         /*
 174         The space has been removed from the tokenizers, otherwise a
 175         path such as "C:\Program Files" would be split into 2 paths:
 176         "C:\Program" and "Files"
 177         */
 178 //        wxT(" ;"); // Don't separate with colon in DOS (used for drive)
 179         wxT(";"); // Don't separate with colon in DOS (used for drive)
 180 #else
 181         wxT(" :;");
 182 #endif
 183
 184     wxString val ;
 185     if (wxGetEnv (WXSTRINGCAST envVariable, &val))
 186     {
 187         wxChar *s = MYcopystring (val);
 188         wxChar *save_ptr, *token = wxStrtok (s, PATH_TOKS, &save_ptr);
 189
 190         if (token)
 191         {
 192             Add(token);
 193             while (token)
 194             {
 195                 if ( (token = wxStrtok ((wxChar *) NULL, PATH_TOKS, &save_ptr))
 196                     != NULL )
 197                 {
 198                     Add(token);
 199                 }
 200             }
 201         }
 202
 203         // suppress warning about unused variable save_ptr when wxStrtok() is a
 204         // macro which throws away its third argument
 205         save_ptr = token;
 206
 207         delete [] s;
 208     }
 209 #endif // !__WXWINCE__
 210 }
 211
 212 // Given a full filename (with path), ensure that that file can
 213 // be accessed again USING FILENAME ONLY by adding the path
 214 // to the list if not already there.
 215 void wxPathList::EnsureFileAccessible (const wxString& path)
 216 {
 217     wxString path_only(wxPathOnly(path));
 218     if ( !path_only.empty() )
 219     {
 220         if ( !Member(path_only) )
 221             Add(path_only);
 222     }
 223 }
 224
 225 bool wxPathList::Member (const wxString& path)
 226 {
 227   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 228   {
 229       wxString path2( node->GetData() );
 230       if (
 231 #if defined(__WINDOWS__) || defined(__OS2__) || defined(__VMS__) || defined(__WXMAC__)
 232       // Case INDEPENDENT
 233           path.CompareTo (path2, wxString::ignoreCase) == 0
 234 #else
 235       // Case sensitive File System
 236           path.CompareTo (path2) == 0
 237 #endif
 238         )
 239         return true;
 240   }
 241   return false;
 242 }
 243
 244 wxString wxPathList::FindValidPath (const wxString& file)
 245 {
 246   wxExpandPath(wxFileFunctionsBuffer, file);
 247
 248   wxChar buf[_MAXPATHLEN];
 249   wxStrcpy(buf, wxFileFunctionsBuffer);
 250
 251   wxChar *filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 252
 253   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 254     {
 255       const wxString path(node->GetData());
 256       wxStrcpy (wxFileFunctionsBuffer, path);
 257       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 258       if (ch != wxT('\\') && ch != wxT('/'))
 259         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 260       wxStrcat (wxFileFunctionsBuffer, filename);
 261 #ifdef __WINDOWS__
 262       wxUnix2DosFilename (wxFileFunctionsBuffer);
 263 #endif
 264       if (wxFileExists (wxFileFunctionsBuffer))
 265       {
 266         return wxString(wxFileFunctionsBuffer);        // Found!
 267       }
 268     }                                // for()
 269
 270   return wxEmptyString;                    // Not found
 271 }
 272
 273 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 274 {
 275     wxString f = FindValidPath(file);
 276     if ( f.empty() || wxIsAbsolutePath(f) )
 277         return f;
 278
 279     wxString buf = ::wxGetCwd();
 280
 281     if ( !wxEndsWithPathSeparator(buf) )
 282     {
 283         buf += wxFILE_SEP_PATH;
 284     }
 285     buf += f;
 286
 287     return buf;
 288 }
 289
 290 bool
 291 wxFileExists (const wxString& filename)
 292 {
 293 #if defined(__WXPALMOS__)
 294     return false;
 295 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 296     // we must use GetFileAttributes() instead of the ANSI C functions because
 297     // it can cope with network (UNC) paths unlike them
 298     DWORD ret = ::GetFileAttributes(filename);
 299
 300     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 301 #else // !__WIN32__
 302     #ifndef S_ISREG
 303         #define S_ISREG(mode) ((mode) & S_IFREG)
 304     #endif
 305     wxStructStat st;
 306 #ifndef wxNEED_WX_UNISTD_H
 307     return (wxStat( filename.fn_str() , &st) == 0 && S_ISREG(st.st_mode))
 308 #ifdef __OS2__
 309       || (errno == EACCES) // if access is denied something with that name
 310                             // exists and is opened in exclusive mode.
 311 #endif
 312       ;
 313 #else
 314     return wxStat( filename , &st) == 0 && S_ISREG(st.st_mode);
 315 #endif
 316 #endif // __WIN32__/!__WIN32__
 317 }
 318
 319 bool
 320 wxIsAbsolutePath (const wxString& filename)
 321 {
 322     if (!filename.empty())
 323     {
 324 #if defined(__WXMAC__) && !defined(__DARWIN__)
 325         // Classic or Carbon CodeWarrior like
 326         // Carbon with Apple DevTools is Unix like
 327
 328         // This seems wrong to me, but there is no fix. since
 329         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 330         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 331         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 332             return true ;
 333 #else
 334         // Unix like or Windows
 335         if (filename[0] == wxT('/'))
 336             return true;
 337 #endif
 338 #ifdef __VMS__
 339         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 340             return true;
 341 #endif
 342 #if defined(__WINDOWS__) || defined(__OS2__)
 343         // MSDOS like
 344         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 345             return true;
 346 #endif
 347     }
 348     return false ;
 349 }
 350
 351 /*
 352  * Strip off any extension (dot something) from end of file,
 353  * IF one exists. Inserts zero into buffer.
 354  *
 355  */
 356
 357 void wxStripExtension(wxChar *buffer)
 358 {
 359     int len = wxStrlen(buffer);
 360     int i = len-1;
 361     while (i > 0)
 362     {
 363         if (buffer[i] == wxT('.'))
 364         {
 365             buffer[i] = 0;
 366             break;
 367         }
 368         i --;
 369     }
 370 }
 371
 372 void wxStripExtension(wxString& buffer)
 373 {
 374     //RN:  Be careful about the handling the case where
 375     //buffer.length() == 0
 376     for(size_t i = buffer.length() - 1; i != wxString::npos; --i)
 377     {
 378         if (buffer.GetChar(i) == wxT('.'))
 379         {
 380           buffer = buffer.Left(i);
 381           break;
 382         }
 383     }
 384 }
 385
 386 // Destructive removal of /./ and /../ stuff
 387 wxChar *wxRealPath (wxChar *path)
 388 {
 389 #ifdef __WXMSW__
 390   static const wxChar SEP = wxT('\\');
 391   wxUnix2DosFilename(path);
 392 #else
 393   static const wxChar SEP = wxT('/');
 394 #endif
 395   if (path[0] && path[1]) {
 396     /* MATTHEW: special case "/./x" */
 397     wxChar *p;
 398     if (path[2] == SEP && path[1] == wxT('.'))
 399       p = &path[0];
 400     else
 401       p = &path[2];
 402     for (; *p; p++)
 403       {
 404         if (*p == SEP)
 405           {
 406             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 407               {
 408                 wxChar *q;
 409                 for (q = p - 1; q >= path && *q != SEP; q--)
 410                 {
 411                     // Empty
 412                 }
 413
 414                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 415                     && (q - 1 <= path || q[-1] != SEP))
 416                   {
 417                     wxStrcpy (q, p + 3);
 418                     if (path[0] == wxT('\0'))
 419                       {
 420                         path[0] = SEP;
 421                         path[1] = wxT('\0');
 422                       }
 423 #if defined(__WXMSW__) || defined(__OS2__)
 424                     /* Check that path[2] is NULL! */
 425                     else if (path[1] == wxT(':') && !path[2])
 426                       {
 427                         path[2] = SEP;
 428                         path[3] = wxT('\0');
 429                       }
 430 #endif
 431                     p = q - 1;
 432                   }
 433               }
 434             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 435               wxStrcpy (p, p + 2);
 436           }
 437       }
 438   }
 439   return path;
 440 }
 441
 442 wxString wxRealPath(const wxString& path)
 443 {
 444     wxChar *buf1=MYcopystring(path);
 445     wxChar *buf2=wxRealPath(buf1);
 446     wxString buf(buf2);
 447     delete [] buf1;
 448     return buf;
 449 }
 450
 451
 452 // Must be destroyed
 453 wxChar *wxCopyAbsolutePath(const wxString& filename)
 454 {
 455     if (filename.empty())
 456         return (wxChar *) NULL;
 457
 458     if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename)))
 459     {
 460         wxString buf = ::wxGetCwd();
 461         wxChar ch = buf.Last();
 462 #ifdef __WXMSW__
 463         if (ch != wxT('\\') && ch != wxT('/'))
 464             buf << wxT("\\");
 465 #else
 466         if (ch != wxT('/'))
 467             buf << wxT("/");
 468 #endif
 469         buf << wxFileFunctionsBuffer;
 470         buf = wxRealPath( buf );
 471         return MYcopystring( buf );
 472     }
 473     return MYcopystring( wxFileFunctionsBuffer );
 474 }
 475
 476 /*-
 477  Handles:
 478    ~/ => home dir
 479    ~user/ => user's home dir
 480    If the environment variable a = "foo" and b = "bar" then:
 481    Unix:
 482         $a        =>        foo
 483         $a$b        =>        foobar
 484         $a.c        =>        foo.c
 485         xxx$a        =>        xxxfoo
 486         ${a}!        =>        foo!
 487         $(b)!        =>        bar!
 488         \$a        =>        \$a
 489    MSDOS:
 490         $a        ==>        $a
 491         $(a)        ==>        foo
 492         $(a)$b        ==>        foo$b
 493         $(a)$(b)==>        foobar
 494         test.$$        ==>        test.$$
 495  */
 496
 497 /* input name in name, pathname output to buf. */
 498
 499 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 500 {
 501     register wxChar *d, *s, *nm;
 502     wxChar          lnm[_MAXPATHLEN];
 503     int             q;
 504
 505     // Some compilers don't like this line.
 506 //    const wxChar    trimchars[] = wxT("\n \t");
 507
 508     wxChar      trimchars[4];
 509     trimchars[0] = wxT('\n');
 510     trimchars[1] = wxT(' ');
 511     trimchars[2] = wxT('\t');
 512     trimchars[3] = 0;
 513
 514 #ifdef __WXMSW__
 515     const wxChar     SEP = wxT('\\');
 516 #else
 517     const wxChar     SEP = wxT('/');
 518 #endif
 519     buf[0] = wxT('\0');
 520     if (name == NULL || *name == wxT('\0'))
 521         return buf;
 522     nm = MYcopystring(name); // Make a scratch copy
 523     wxChar *nm_tmp = nm;
 524
 525     /* Skip leading whitespace and cr */
 526     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 527         nm++;
 528     /* And strip off trailing whitespace and cr */
 529     s = nm + (q = wxStrlen(nm)) - 1;
 530     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 531         *s = wxT('\0');
 532
 533     s = nm;
 534     d = lnm;
 535 #ifdef __WXMSW__
 536     q = FALSE;
 537 #else
 538     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 539 #endif
 540
 541     /* Expand inline environment variables */
 542 #ifdef __VISAGECPP__
 543     while (*d)
 544     {
 545       *d++ = *s;
 546       if(*s == wxT('\\'))
 547       {
 548         *(d - 1) = *++s;
 549         if (*d)
 550         {
 551           s++;
 552           continue;
 553         }
 554         else
 555            break;
 556       }
 557       else
 558 #else
 559     while ((*d++ = *s) != 0) {
 560 #  ifndef __WXMSW__
 561         if (*s == wxT('\\')) {
 562             if ((*(d - 1) = *++s)!=0) {
 563                 s++;
 564                 continue;
 565             } else
 566                 break;
 567         } else
 568 #  endif
 569 #endif
 570             // No env variables on WinCE
 571 #ifndef __WXWINCE__
 572 #ifdef __WXMSW__
 573         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 574 #else
 575         if (*s++ == wxT('$'))
 576 #endif
 577         {
 578             register wxChar  *start = d;
 579             register int     braces = (*s == wxT('{') || *s == wxT('('));
 580             register wxChar  *value;
 581             while ((*d++ = *s) != 0)
 582                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 583                     break;
 584                 else
 585                     s++;
 586             *--d = 0;
 587             value = wxGetenv(braces ? start + 1 : start);
 588             if (value) {
 589                 for ((d = start - 1); (*d++ = *value++) != 0;)
 590                 {
 591                     // Empty
 592                 }
 593
 594                 d--;
 595                 if (braces && *s)
 596                     s++;
 597             }
 598         }
 599 #endif
 600         // __WXWINCE__
 601     }
 602
 603     /* Expand ~ and ~user */
 604     nm = lnm;
 605     if (nm[0] == wxT('~') && !q)
 606     {
 607         /* prefix ~ */
 608         if (nm[1] == SEP || nm[1] == 0)
 609         {        /* ~/filename */
 610         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 611             if ((s = WXSTRINGCAST wxGetUserHome(wxEmptyString)) != NULL) {
 612                 if (*++nm)
 613                     nm++;
 614             }
 615         } else
 616         {                /* ~user/filename */
 617             register wxChar  *nnm;
 618             register wxChar  *home;
 619             for (s = nm; *s && *s != SEP; s++)
 620             {
 621                 // Empty
 622             }
 623             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 624             was_sep = (*s == SEP);
 625             nnm = *s ? s + 1 : s;
 626             *s = 0;
 627         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 628             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL)
 629             {
 630                 if (was_sep) /* replace only if it was there: */
 631                     *s = SEP;
 632                 s = NULL;
 633             }
 634             else
 635             {
 636                 nm = nnm;
 637                 s = home;
 638             }
 639         }
 640     }
 641
 642     d = buf;
 643     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 644         /* Copy home dir */
 645         while (wxT('\0') != (*d++ = *s++))
 646           /* loop */;
 647         // Handle root home
 648         if (d - 1 > buf && *(d - 2) != SEP)
 649           *(d - 1) = SEP;
 650     }
 651     s = nm;
 652     while ((*d++ = *s++) != 0)
 653     {
 654         // Empty
 655     }
 656     delete[] nm_tmp; // clean up alloc
 657     /* Now clean up the buffer */
 658     return wxRealPath(buf);
 659 }
 660
 661 /* Contract Paths to be build upon an environment variable
 662    component:
 663
 664    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 665
 666    The call wxExpandPath can convert these back!
 667  */
 668 wxChar *
 669 wxContractPath (const wxString& filename,
 670                 const wxString& WXUNUSED_IN_WINCE(envname),
 671                 const wxString& user)
 672 {
 673   static wxChar dest[_MAXPATHLEN];
 674
 675   if (filename.empty())
 676     return (wxChar *) NULL;
 677
 678   wxStrcpy (dest, WXSTRINGCAST filename);
 679 #ifdef __WXMSW__
 680   wxUnix2DosFilename(dest);
 681 #endif
 682
 683   // Handle environment
 684   const wxChar *val;
 685 #ifndef __WXWINCE__
 686   wxChar *tcp;
 687   if (!envname.empty() && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 688      (tcp = wxStrstr (dest, val)) != NULL)
 689     {
 690         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 691         *tcp++ = wxT('$');
 692         *tcp++ = wxT('{');
 693         wxStrcpy (tcp, WXSTRINGCAST envname);
 694         wxStrcat (tcp, wxT("}"));
 695         wxStrcat (tcp, wxFileFunctionsBuffer);
 696     }
 697 #endif
 698
 699   // Handle User's home (ignore root homes!)
 700   val = wxGetUserHome (user);
 701   if (!val)
 702     return dest;
 703
 704   const size_t len = wxStrlen(val);
 705   if (len <= 2)
 706     return dest;
 707
 708   if (wxStrncmp(dest, val, len) == 0)
 709   {
 710     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 711     if (!user.empty())
 712            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 713     wxStrcat(wxFileFunctionsBuffer, dest + len);
 714     wxStrcpy (dest, wxFileFunctionsBuffer);
 715   }
 716
 717   return dest;
 718 }
 719
 720 // Return just the filename, not the path (basename)
 721 wxChar *wxFileNameFromPath (wxChar *path)
 722 {
 723     wxString p = path;
 724     wxString n = wxFileNameFromPath(p);
 725
 726     return path + p.length() - n.length();
 727 }
 728
 729 wxString wxFileNameFromPath (const wxString& path)
 730 {
 731     wxString name, ext;
 732     wxFileName::SplitPath(path, NULL, &name, &ext);
 733
 734     wxString fullname = name;
 735     if ( !ext.empty() )
 736     {
 737         fullname << wxFILE_SEP_EXT << ext;
 738     }
 739
 740     return fullname;
 741 }
 742
 743 // Return just the directory, or NULL if no directory
 744 wxChar *
 745 wxPathOnly (wxChar *path)
 746 {
 747     if (path && *path)
 748     {
 749         static wxChar buf[_MAXPATHLEN];
 750
 751         // Local copy
 752         wxStrcpy (buf, path);
 753
 754         int l = wxStrlen(path);
 755         int i = l - 1;
 756
 757         // Search backward for a backward or forward slash
 758         while (i > -1)
 759         {
 760 #if defined(__WXMAC__) && !defined(__DARWIN__)
 761             // Classic or Carbon CodeWarrior like
 762             // Carbon with Apple DevTools is Unix like
 763             if (path[i] == wxT(':') )
 764             {
 765                 buf[i] = 0;
 766                 return buf;
 767             }
 768 #else
 769             // Unix like or Windows
 770             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 771             {
 772                 buf[i] = 0;
 773                 return buf;
 774             }
 775 #endif
 776 #ifdef __VMS__
 777             if (path[i] == wxT(']'))
 778             {
 779                 buf[i+1] = 0;
 780                 return buf;
 781             }
 782 #endif
 783             i --;
 784         }
 785
 786 #if defined(__WXMSW__) || defined(__OS2__)
 787         // Try Drive specifier
 788         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 789         {
 790             // A:junk --> A:. (since A:.\junk Not A:\junk)
 791             buf[2] = wxT('.');
 792             buf[3] = wxT('\0');
 793             return buf;
 794         }
 795 #endif
 796     }
 797     return (wxChar *) NULL;
 798 }
 799
 800 // Return just the directory, or NULL if no directory
 801 wxString wxPathOnly (const wxString& path)
 802 {
 803     if (!path.empty())
 804     {
 805         wxChar buf[_MAXPATHLEN];
 806
 807         // Local copy
 808         wxStrcpy (buf, WXSTRINGCAST path);
 809
 810         int l = path.length();
 811         int i = l - 1;
 812
 813         // Search backward for a backward or forward slash
 814         while (i > -1)
 815         {
 816 #if defined(__WXMAC__) && !defined(__DARWIN__)
 817             // Classic or Carbon CodeWarrior like
 818             // Carbon with Apple DevTools is Unix like
 819             if (path[i] == wxT(':') )
 820             {
 821                 buf[i] = 0;
 822                 return wxString(buf);
 823             }
 824 #else
 825             // Unix like or Windows
 826             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 827             {
 828                 // Don't return an empty string
 829                 if (i == 0)
 830                     i ++;
 831                 buf[i] = 0;
 832                 return wxString(buf);
 833             }
 834 #endif
 835 #ifdef __VMS__
 836             if (path[i] == wxT(']'))
 837             {
 838                 buf[i+1] = 0;
 839                 return wxString(buf);
 840             }
 841 #endif
 842             i --;
 843         }
 844
 845 #if defined(__WXMSW__) || defined(__OS2__)
 846         // Try Drive specifier
 847         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 848         {
 849             // A:junk --> A:. (since A:.\junk Not A:\junk)
 850             buf[2] = wxT('.');
 851             buf[3] = wxT('\0');
 852             return wxString(buf);
 853         }
 854 #endif
 855     }
 856     return wxEmptyString;
 857 }
 858
 859 // Utility for converting delimiters in DOS filenames to UNIX style
 860 // and back again - or we get nasty problems with delimiters.
 861 // Also, convert to lower case, since case is significant in UNIX.
 862
 863 #if defined(__WXMAC__)
 864
 865 #if TARGET_API_MAC_OSX
 866 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 867 #else
 868 #define kDefaultPathStyle kCFURLHFSPathStyle
 869 #endif
 870
 871 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 872 {
 873     CFURLRef fullURLRef;
 874     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 875     if ( additionalPathComponent )
 876     {
 877         CFURLRef parentURLRef = fullURLRef ;
 878         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 879             additionalPathComponent,false);
 880         CFRelease( parentURLRef ) ;
 881     }
 882     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 883     CFRelease( fullURLRef ) ;
 884     CFMutableStringRef cfMutableString = CFStringCreateMutableCopy(NULL, 0, cfString);
 885     CFRelease( cfString );
 886     CFStringNormalize(cfMutableString,kCFStringNormalizationFormC);
 887     return wxMacCFStringHolder(cfMutableString).AsString(wxLocale::GetSystemEncoding());
 888 }
 889
 890 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 891 {
 892     OSStatus err = noErr ;
 893     CFMutableStringRef cfMutableString = CFStringCreateMutableCopy(NULL, 0, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) ) ;
 894     CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
 895     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kDefaultPathStyle, false);
 896     CFRelease( cfMutableString );
 897     if ( NULL != url )
 898     {
 899         if ( CFURLGetFSRef(url, fsRef) == false )
 900             err = fnfErr ;
 901         CFRelease( url ) ;
 902     }
 903     else
 904     {
 905         err = fnfErr ;
 906     }
 907     return err ;
 908 }
 909
 910 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 911 {
 912     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 913                                                       uniname->unicode,
 914                                                       uniname->length );
 915     CFMutableStringRef cfMutableString = CFStringCreateMutableCopy(NULL, 0, cfname);
 916     CFRelease( cfname );
 917     CFStringNormalize(cfMutableString,kCFStringNormalizationFormC);
 918     return wxMacCFStringHolder(cfMutableString).AsString() ;
 919 }
 920
 921 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 922 {
 923     FSRef fsRef ;
 924     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 925     {
 926         return wxMacFSRefToPath( &fsRef ) ;
 927     }
 928     return wxEmptyString ;
 929 }
 930
 931 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 932 {
 933     OSStatus err = noErr ;
 934     FSRef fsRef ;
 935     wxMacPathToFSRef( path , &fsRef ) ;
 936     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 937 }
 938
 939 #endif // __WXMAC__
 940
 941 void
 942 wxDos2UnixFilename (wxChar *s)
 943 {
 944   if (s)
 945     while (*s)
 946       {
 947         if (*s == _T('\\'))
 948           *s = _T('/');
 949 #ifdef __WXMSW__
 950         else
 951           *s = (wxChar)wxTolower (*s);        // Case INDEPENDENT
 952 #endif
 953         s++;
 954       }
 955 }
 956
 957 void
 958 #if defined(__WXMSW__) || defined(__OS2__)
 959 wxUnix2DosFilename (wxChar *s)
 960 #else
 961 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
 962 #endif
 963 {
 964 // Yes, I really mean this to happen under DOS only! JACS
 965 #if defined(__WXMSW__) || defined(__OS2__)
 966   if (s)
 967     while (*s)
 968       {
 969         if (*s == wxT('/'))
 970           *s = wxT('\\');
 971         s++;
 972       }
 973 #endif
 974 }
 975
 976 // Concatenate two files to form third
 977 bool
 978 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 979 {
 980 #if wxUSE_FILE
 981
 982     wxFile in1(file1), in2(file2);
 983     wxTempFile out(file3);
 984
 985     if ( !in1.IsOpened() || !in2.IsOpened() || !out.IsOpened() )
 986         return false;
 987
 988     ssize_t ofs;
 989     unsigned char buf[1024];
 990
 991     for( int i=0; i<2; i++)
 992     {
 993         wxFile *in = i==0 ? &in1 : &in2;
 994         do{
 995             if ( (ofs = in->Read(buf,WXSIZEOF(buf))) == wxInvalidOffset ) return false;
 996             if ( ofs > 0 )
 997                 if ( !out.Write(buf,ofs) )
 998                     return false;
 999         } while ( ofs == (ssize_t)WXSIZEOF(buf) );
1000     }
1001
1002     return out.Commit();
1003
1004 #else
1005
1006     wxUnusedVar(file1);
1007     wxUnusedVar(file2);
1008     wxUnusedVar(file3);
1009     return false;
1010
1011 #endif
1012 }
1013
1014 // Copy files
1015 bool
1016 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
1017 {
1018 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1019     // CopyFile() copies file attributes and modification time too, so use it
1020     // instead of our code if available
1021     //
1022     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1023     if ( !::CopyFile(file1, file2, !overwrite) )
1024     {
1025         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1026                       file1.c_str(), file2.c_str());
1027
1028         return false;
1029     }
1030 #elif defined(__OS2__)
1031     if ( ::DosCopy((PSZ)file1.c_str(), (PSZ)file2.c_str(), overwrite ? DCPY_EXISTING : 0) != 0 )
1032         return false;
1033 #elif defined(__PALMOS__)
1034     // TODO with http://www.palmos.com/dev/support/docs/protein_books/Memory_Databases_Files/
1035     return false;
1036 #elif wxUSE_FILE // !Win32
1037
1038     wxStructStat fbuf;
1039     // get permissions of file1
1040     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1041     {
1042         // the file probably doesn't exist or we haven't the rights to read
1043         // from it anyhow
1044         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1045                       file1.c_str());
1046         return false;
1047     }
1048
1049     // open file1 for reading
1050     wxFile fileIn(file1, wxFile::read);
1051     if ( !fileIn.IsOpened() )
1052         return false;
1053
1054     // remove file2, if it exists. This is needed for creating
1055     // file2 with the correct permissions in the next step
1056     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1057     {
1058         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1059                       file2.c_str());
1060         return false;
1061     }
1062
1063     // reset the umask as we want to create the file with exactly the same
1064     // permissions as the original one
1065     wxCHANGE_UMASK(0);
1066
1067     // create file2 with the same permissions than file1 and open it for
1068     // writing
1069
1070     wxFile fileOut;
1071     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1072         return false;
1073
1074     // copy contents of file1 to file2
1075     char buf[4096];
1076     size_t count;
1077     for ( ;; )
1078     {
1079         count = fileIn.Read(buf, WXSIZEOF(buf));
1080         if ( fileIn.Error() )
1081             return false;
1082
1083         // end of file?
1084         if ( !count )
1085             break;
1086
1087         if ( fileOut.Write(buf, count) < count )
1088             return false;
1089     }
1090
1091     // we can expect fileIn to be closed successfully, but we should ensure
1092     // that fileOut was closed as some write errors (disk full) might not be
1093     // detected before doing this
1094     if ( !fileIn.Close() || !fileOut.Close() )
1095         return false;
1096
1097 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1098     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1099     // however
1100     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1101     {
1102         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1103                       file2.c_str());
1104         return false;
1105     }
1106 #endif // OS/2 || Mac
1107
1108 #else // !Win32 && ! wxUSE_FILE
1109
1110     // impossible to simulate with wxWidgets API
1111     wxUnusedVar(file1);
1112     wxUnusedVar(file2);
1113     wxUnusedVar(overwrite);
1114     return false;
1115
1116 #endif // __WXMSW__ && __WIN32__
1117
1118     return true;
1119 }
1120
1121 bool
1122 wxRenameFile(const wxString& file1, const wxString& file2, bool overwrite)
1123 {
1124     if ( !overwrite && wxFileExists(file2) )
1125     {
1126         wxLogSysError
1127         (
1128             _("Failed to rename the file '%s' to '%s' because the destination file already exists."),
1129             file1.c_str(), file2.c_str()
1130         );
1131
1132         return false;
1133     }
1134
1135 #if !defined(__WXWINCE__) && !defined(__WXPALMOS__)
1136     // Normal system call
1137   if ( wxRename (file1, file2) == 0 )
1138     return true;
1139 #endif
1140
1141   // Try to copy
1142   if (wxCopyFile(file1, file2, overwrite)) {
1143     wxRemoveFile(file1);
1144     return true;
1145   }
1146   // Give up
1147   return false;
1148 }
1149
1150 bool wxRemoveFile(const wxString& file)
1151 {
1152 #if defined(__VISUALC__) \
1153  || defined(__BORLANDC__) \
1154  || defined(__WATCOMC__) \
1155  || defined(__DMC__) \
1156  || defined(__GNUWIN32__) \
1157  || (defined(__MWERKS__) && defined(__MSL__))
1158     int res = wxRemove(file);
1159 #elif defined(__WXMAC__)
1160     int res = unlink(wxFNCONV(file));
1161 #elif defined(__WXPALMOS__)
1162     int res = 1;
1163     // TODO with VFSFileDelete()
1164 #else
1165     int res = unlink(OS_FILENAME(file));
1166 #endif
1167
1168     return res == 0;
1169 }
1170
1171 bool wxMkdir(const wxString& dir, int perm)
1172 {
1173 #if defined(__WXPALMOS__)
1174     return false;
1175 #elif defined(__WXMAC__) && !defined(__UNIX__)
1176     return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1177 #else // !Mac
1178     const wxChar *dirname = dir.c_str();
1179
1180     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1181     // for the GNU compiler
1182 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1183   #if defined(MSVCRT)
1184     wxUnusedVar(perm);
1185     if ( mkdir(wxFNCONV(dirname)) != 0 )
1186   #else
1187     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1188   #endif
1189 #elif defined(__OS2__)
1190     wxUnusedVar(perm);
1191     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1192 #elif defined(__DOS__)
1193   #if defined(__WATCOMC__)
1194     (void)perm;
1195     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1196   #elif defined(__DJGPP__)
1197     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1198   #else
1199     #error "Unsupported DOS compiler!"
1200   #endif
1201 #else  // !MSW, !DOS and !OS/2 VAC++
1202     wxUnusedVar(perm);
1203 #ifdef __WXWINCE__
1204     if ( !CreateDirectory(dirname, NULL) )
1205 #else
1206     if ( wxMkDir(dir.fn_str()) != 0 )
1207 #endif
1208 #endif // !MSW/MSW
1209     {
1210         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1211
1212         return false;
1213     }
1214
1215     return true;
1216 #endif // Mac/!Mac
1217 }
1218
1219 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1220 {
1221 #if defined(__VMS__)
1222     return false; //to be changed since rmdir exists in VMS7.x
1223 #elif defined(__OS2__)
1224     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1225 #elif defined(__WXWINCE__)
1226     return (CreateDirectory(dir, NULL) != 0);
1227 #elif defined(__WXPALMOS__)
1228     // TODO with VFSFileRename()
1229     return false;
1230 #else
1231     return (wxRmDir(OS_FILENAME(dir)) == 0);
1232 #endif
1233 }
1234
1235 // does the path exists? (may have or not '/' or '\\' at the end)
1236 bool wxDirExists(const wxChar *pszPathName)
1237 {
1238     wxString strPath(pszPathName);
1239
1240 #if defined(__WINDOWS__) || defined(__OS2__)
1241     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1242     // so remove all trailing backslashes from the path - but don't do this for
1243     // the pathes "d:\" (which are different from "d:") nor for just "\"
1244     while ( wxEndsWithPathSeparator(strPath) )
1245     {
1246         size_t len = strPath.length();
1247         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1248             break;
1249
1250         strPath.Truncate(len - 1);
1251     }
1252 #endif // __WINDOWS__
1253
1254 #ifdef __OS2__
1255     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1256     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1257         strPath << _T('.');
1258 #endif
1259
1260 #if defined(__WXPALMOS__)
1261     return false;
1262 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
1263     // stat() can't cope with network paths
1264     DWORD ret = ::GetFileAttributes(strPath);
1265
1266     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1267 #elif defined(__OS2__)
1268     FILESTATUS3 Info = {{0}};
1269     APIRET rc = ::DosQueryPathInfo((PSZ)(WXSTRINGCAST strPath), FIL_STANDARD,
1270                                    (void*) &Info, sizeof(FILESTATUS3));
1271
1272     return ((rc == NO_ERROR) && (Info.attrFile & FILE_DIRECTORY)) ||
1273       (rc == ERROR_SHARING_VIOLATION);
1274     // If we got a sharing violation, there must be something with this name.
1275 #else // !__WIN32__
1276
1277     wxStructStat st;
1278 #ifndef __VISAGECPP__
1279     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1280 #else
1281     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1282     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1283 #endif
1284
1285 #endif // __WIN32__/!__WIN32__
1286 }
1287
1288 // Get a temporary filename, opening and closing the file.
1289 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1290 {
1291 #if wxUSE_FILE
1292     wxString filename = wxFileName::CreateTempFileName(prefix);
1293     if ( filename.empty() )
1294         return NULL;
1295
1296     if ( buf )
1297         wxStrcpy(buf, filename);
1298     else
1299         buf = MYcopystring(filename);
1300
1301     return buf;
1302 #else
1303     wxUnusedVar(prefix);
1304     wxUnusedVar(buf);
1305     // wxFileName::CreateTempFileName needs wxFile class enabled
1306     return NULL;
1307 #endif
1308 }
1309
1310 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1311 {
1312     buf = wxGetTempFileName(prefix);
1313
1314     return !buf.empty();
1315 }
1316
1317 // Get first file name matching given wild card.
1318
1319 static wxDir *gs_dir = NULL;
1320 static wxString gs_dirPath;
1321
1322 wxString wxFindFirstFile(const wxChar *spec, int flags)
1323 {
1324     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1325     if ( gs_dirPath.empty() )
1326         gs_dirPath = wxT(".");
1327     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1328         gs_dirPath << wxFILE_SEP_PATH;
1329
1330     if (gs_dir)
1331         delete gs_dir;
1332     gs_dir = new wxDir(gs_dirPath);
1333
1334     if ( !gs_dir->IsOpened() )
1335     {
1336         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1337         return wxEmptyString;
1338     }
1339
1340     int dirFlags;
1341     switch (flags)
1342     {
1343         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1344         case wxFILE: dirFlags = wxDIR_FILES; break;
1345         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1346     }
1347
1348     wxString result;
1349     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1350     if ( result.empty() )
1351     {
1352         wxDELETE(gs_dir);
1353         return result;
1354     }
1355
1356     return gs_dirPath + result;
1357 }
1358
1359 wxString wxFindNextFile()
1360 {
1361     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1362
1363     wxString result;
1364     gs_dir->GetNext(&result);
1365
1366     if ( result.empty() )
1367     {
1368         wxDELETE(gs_dir);
1369         return result;
1370     }
1371
1372     return gs_dirPath + result;
1373 }
1374
1375
1376 // Get current working directory.
1377 // If buf is NULL, allocates space using new, else copies into buf.
1378 // wxGetWorkingDirectory() is obsolete, use wxGetCwd()
1379 // wxDoGetCwd() is their common core to be moved
1380 // to wxGetCwd() once wxGetWorkingDirectory() will be removed.
1381 // Do not expose wxDoGetCwd in headers!
1382
1383 wxChar *wxDoGetCwd(wxChar *buf, int sz)
1384 {
1385 #if defined(__WXPALMOS__)
1386     // TODO
1387     if(buf && sz>0) buf[0] = _T('\0');
1388     return buf;
1389 #elif defined(__WXWINCE__)
1390     // TODO
1391     if(buf && sz>0) buf[0] = _T('\0');
1392     return buf;
1393 #else
1394     if ( !buf )
1395     {
1396         buf = new wxChar[sz + 1];
1397     }
1398
1399     bool ok wxDUMMY_INITIALIZE(false);
1400
1401     // for the compilers which have Unicode version of _getcwd(), call it
1402     // directly, for the others call the ANSI version and do the translation
1403 #if !wxUSE_UNICODE
1404     #define cbuf buf
1405 #else // wxUSE_UNICODE
1406     bool needsANSI = true;
1407
1408     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1409         char cbuf[_MAXPATHLEN];
1410     #endif
1411
1412     #ifdef HAVE_WGETCWD
1413         #if wxUSE_UNICODE_MSLU
1414             if ( wxGetOsVersion() != wxWIN95 )
1415         #else
1416             char *cbuf = NULL; // never really used because needsANSI will always be false
1417         #endif
1418             {
1419                 ok = _wgetcwd(buf, sz) != NULL;
1420                 needsANSI = false;
1421             }
1422     #endif
1423
1424     if ( needsANSI )
1425 #endif // wxUSE_UNICODE
1426     {
1427     #if defined(_MSC_VER) || defined(__MINGW32__)
1428         ok = _getcwd(cbuf, sz) != NULL;
1429     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1430         char lbuf[1024] ;
1431         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1432         {
1433             wxString res( lbuf , *wxConvCurrent ) ;
1434             wxStrcpy( buf , res ) ;
1435             ok = true;
1436         }
1437         else
1438             ok = false ;
1439     #elif defined(__OS2__)
1440         APIRET rc;
1441         ULONG ulDriveNum = 0;
1442         ULONG ulDriveMap = 0;
1443         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1444         ok = rc == 0;
1445         if (ok)
1446         {
1447             sz -= 3;
1448             rc = ::DosQueryCurrentDir( 0 // current drive
1449                                       ,cbuf + 3
1450                                       ,(PULONG)&sz
1451                                      );
1452             cbuf[0] = char('A' + (ulDriveNum - 1));
1453             cbuf[1] = ':';
1454             cbuf[2] = '\\';
1455             ok = rc == 0;
1456         }
1457     #else // !Win32/VC++ !Mac !OS2
1458         ok = getcwd(cbuf, sz) != NULL;
1459     #endif // platform
1460
1461     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1462         // finally convert the result to Unicode if needed
1463         wxConvFile.MB2WC(buf, cbuf, sz);
1464     #endif // wxUSE_UNICODE
1465     }
1466
1467     if ( !ok )
1468     {
1469         wxLogSysError(_("Failed to get the working directory"));
1470
1471         // VZ: the old code used to return "." on error which didn't make any
1472         //     sense at all to me - empty string is a better error indicator
1473         //     (NULL might be even better but I'm afraid this could lead to
1474         //     problems with the old code assuming the return is never NULL)
1475         buf[0] = _T('\0');
1476     }
1477     else // ok, but we might need to massage the path into the right format
1478     {
1479 #ifdef __DJGPP__
1480         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1481         //     with / deliminers. We don't like that.
1482         for (wxChar *ch = buf; *ch; ch++)
1483         {
1484             if (*ch == wxT('/'))
1485                 *ch = wxT('\\');
1486         }
1487 #endif // __DJGPP__
1488
1489 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1490 //      he needs Unix as opposed to Win32 pathnames
1491 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1492         // another example of DOS/Unix mix (Cygwin)
1493         wxString pathUnix = buf;
1494 #if wxUSE_UNICODE
1495         char bufA[_MAXPATHLEN];
1496         cygwin_conv_to_full_win32_path(pathUnix.mb_str(wxConvFile), bufA);
1497         wxConvFile.MB2WC(buf, bufA, sz);
1498 #else
1499         cygwin_conv_to_full_win32_path(pathUnix, buf);
1500 #endif // wxUSE_UNICODE
1501 #endif // __CYGWIN__
1502     }
1503
1504     return buf;
1505
1506 #if !wxUSE_UNICODE
1507     #undef cbuf
1508 #endif
1509
1510 #endif
1511     // __WXWINCE__
1512 }
1513
1514 #if WXWIN_COMPATIBILITY_2_6
1515 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1516 {
1517     return wxDoGetCwd(buf,sz);
1518 }
1519 #endif // WXWIN_COMPATIBILITY_2_6
1520
1521 wxString wxGetCwd()
1522 {
1523     wxString str;
1524     wxDoGetCwd(wxStringBuffer(str, _MAXPATHLEN), _MAXPATHLEN);
1525     return str;
1526 }
1527
1528 bool wxSetWorkingDirectory(const wxString& d)
1529 {
1530 #if defined(__OS2__)
1531     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1532 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1533     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1534 #elif defined(__WINDOWS__)
1535
1536 #ifdef __WIN32__
1537 #ifdef __WXWINCE__
1538     // No equivalent in WinCE
1539     wxUnusedVar(d);
1540     return false;
1541 #else
1542     return (bool)(SetCurrentDirectory(d) != 0);
1543 #endif
1544 #else
1545     // Must change drive, too.
1546     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1547     if (isDriveSpec)
1548     {
1549         wxChar firstChar = d[0];
1550
1551         // To upper case
1552         if (firstChar > 90)
1553             firstChar = firstChar - 32;
1554
1555         // To a drive number
1556         unsigned int driveNo = firstChar - 64;
1557         if (driveNo > 0)
1558         {
1559             unsigned int noDrives;
1560             _dos_setdrive(driveNo, &noDrives);
1561         }
1562     }
1563     bool success = (chdir(WXSTRINGCAST d) == 0);
1564
1565     return success;
1566 #endif
1567
1568 #endif
1569 }
1570
1571 // Get the OS directory if appropriate (such as the Windows directory).
1572 // On non-Windows platform, probably just return the empty string.
1573 wxString wxGetOSDirectory()
1574 {
1575 #ifdef __WXWINCE__
1576     return wxString(wxT("\\Windows"));
1577 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1578     wxChar buf[256];
1579     GetWindowsDirectory(buf, 256);
1580     return wxString(buf);
1581 #elif defined(__WXMAC__)
1582     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1583 #else
1584     return wxEmptyString;
1585 #endif
1586 }
1587
1588 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1589 {
1590     size_t len = wxStrlen(pszFileName);
1591
1592     return len && wxIsPathSeparator(pszFileName[len - 1]);
1593 }
1594
1595 // find a file in a list of directories, returns false if not found
1596 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1597 {
1598     // we assume that it's not empty
1599     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1600                  _T("empty file name in wxFindFileInPath"));
1601
1602     // skip path separator in the beginning of the file name if present
1603     if ( wxIsPathSeparator(*pszFile) )
1604         pszFile++;
1605
1606     // copy the path (strtok will modify it)
1607     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1608     wxStrcpy(szPath, pszPath);
1609
1610     wxString strFile;
1611     wxChar *pc, *save_ptr;
1612     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1613           pc != NULL;
1614           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1615     {
1616         // search for the file in this directory
1617         strFile = pc;
1618         if ( !wxEndsWithPathSeparator(pc) )
1619             strFile += wxFILE_SEP_PATH;
1620         strFile += pszFile;
1621
1622         if ( wxFileExists(strFile) ) {
1623             *pStr = strFile;
1624             break;
1625         }
1626     }
1627
1628     // suppress warning about unused variable save_ptr when wxStrtok() is a
1629     // macro which throws away its third argument
1630     save_ptr = pc;
1631
1632     delete [] szPath;
1633
1634     return pc != NULL;  // if true => we breaked from the loop
1635 }
1636
1637 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1638                              wxString *pstrPath,
1639                              wxString *pstrName,
1640                              wxString *pstrExt)
1641 {
1642     // it can be empty, but it shouldn't be NULL
1643     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1644
1645     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1646 }
1647
1648 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1649 {
1650     wxDateTime mtime;
1651     if ( !wxFileName(filename).GetTimes(NULL, &mtime, NULL) )
1652         return (time_t)-1;
1653
1654     return mtime.GetTicks();
1655 }
1656
1657
1658 // Parses the filterStr, returning the number of filters.
1659 // Returns 0 if none or if there's a problem.
1660 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpeg"
1661
1662 int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr,
1663                                            wxArrayString& descriptions,
1664                                            wxArrayString& filters)
1665 {
1666     descriptions.Clear();
1667     filters.Clear();
1668
1669     wxString str(filterStr);
1670
1671     wxString description, filter;
1672     int pos = 0;
1673     while( pos != wxNOT_FOUND )
1674     {
1675         pos = str.Find(wxT('|'));
1676         if ( pos == wxNOT_FOUND )
1677         {
1678             // if there are no '|'s at all in the string just take the entire
1679             // string as filter and make description empty for later autocompletion
1680             if ( filters.IsEmpty() )
1681             {
1682                 descriptions.Add(wxEmptyString);
1683                 filters.Add(filterStr);
1684             }
1685             else
1686             {
1687                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1688             }
1689
1690             break;
1691         }
1692
1693         description = str.Left(pos);
1694         str = str.Mid(pos + 1);
1695         pos = str.Find(wxT('|'));
1696         if ( pos == wxNOT_FOUND )
1697         {
1698             filter = str;
1699         }
1700         else
1701         {
1702             filter = str.Left(pos);
1703             str = str.Mid(pos + 1);
1704         }
1705
1706         descriptions.Add(description);
1707         filters.Add(filter);
1708     }
1709
1710 #if defined(__WXMOTIF__)
1711     // split it so there is one wildcard per entry
1712     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1713     {
1714         pos = filters[i].Find(wxT(';'));
1715         if (pos != wxNOT_FOUND)
1716         {
1717             // first split only filters
1718             descriptions.Insert(descriptions[i],i+1);
1719             filters.Insert(filters[i].Mid(pos+1),i+1);
1720             filters[i]=filters[i].Left(pos);
1721
1722             // autoreplace new filter in description with pattern:
1723             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1724             // cause split into:
1725             //     C/C++ Files(*.cpp)|*.cpp
1726             //     C/C++ Files(*.c;*.h)|*.c;*.h
1727             // and next iteration cause another split into:
1728             //     C/C++ Files(*.cpp)|*.cpp
1729             //     C/C++ Files(*.c)|*.c
1730             //     C/C++ Files(*.h)|*.h
1731             for ( size_t k=i;k<i+2;k++ )
1732             {
1733                 pos = descriptions[k].Find(filters[k]);
1734                 if (pos != wxNOT_FOUND)
1735                 {
1736                     wxString before = descriptions[k].Left(pos);
1737                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1738                     pos = before.Find(_T('('),true);
1739                     if (pos>before.Find(_T(')'),true))
1740                     {
1741                         before = before.Left(pos+1);
1742                         before << filters[k];
1743                         pos = after.Find(_T(')'));
1744                         int pos1 = after.Find(_T('('));
1745                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1746                         {
1747                             before << after.Mid(pos);
1748                             descriptions[k] = before;
1749                         }
1750                     }
1751                 }
1752             }
1753         }
1754     }
1755 #endif
1756
1757     // autocompletion
1758     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1759     {
1760         if ( descriptions[j].empty() && !filters[j].empty() )
1761         {
1762             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1763         }
1764     }
1765
1766     return filters.GetCount();
1767 }
1768
1769
1770 //------------------------------------------------------------------------
1771 // wild character routines
1772 //------------------------------------------------------------------------
1773
1774 bool wxIsWild( const wxString& pattern )
1775 {
1776     wxString tmp = pattern;
1777     wxChar *pat = WXSTRINGCAST(tmp);
1778     while (*pat)
1779     {
1780         switch (*pat++)
1781         {
1782         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1783             return true;
1784         case wxT('\\'):
1785             if (!*pat++)
1786                 return false;
1787         }
1788     }
1789     return false;
1790 }
1791
1792 /*
1793 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1794 *
1795 * The match procedure is public domain code (from ircII's reg.c)
1796 * but modified to suit our tastes (RN: No "%" syntax I guess)
1797 */
1798
1799 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1800 {
1801     if (text.empty())
1802     {
1803         /* Match if both are empty. */
1804         return pat.empty();
1805     }
1806
1807     const wxChar *m = pat.c_str(),
1808     *n = text.c_str(),
1809     *ma = NULL,
1810     *na = NULL;
1811     int just = 0,
1812     acount = 0,
1813     count = 0;
1814
1815     if (dot_special && (*n == wxT('.')))
1816     {
1817         /* Never match so that hidden Unix files
1818          * are never found. */
1819         return false;
1820     }
1821
1822     for (;;)
1823     {
1824         if (*m == wxT('*'))
1825         {
1826             ma = ++m;
1827             na = n;
1828             just = 1;
1829             acount = count;
1830         }
1831         else if (*m == wxT('?'))
1832         {
1833             m++;
1834             if (!*n++)
1835                 return false;
1836         }
1837         else
1838         {
1839             if (*m == wxT('\\'))
1840             {
1841                 m++;
1842                 /* Quoting "nothing" is a bad thing */
1843                 if (!*m)
1844                     return false;
1845             }
1846             if (!*m)
1847             {
1848                 /*
1849                 * If we are out of both strings or we just
1850                 * saw a wildcard, then we can say we have a
1851                 * match
1852                 */
1853                 if (!*n)
1854                     return true;
1855                 if (just)
1856                     return true;
1857                 just = 0;
1858                 goto not_matched;
1859             }
1860             /*
1861             * We could check for *n == NULL at this point, but
1862             * since it's more common to have a character there,
1863             * check to see if they match first (m and n) and
1864             * then if they don't match, THEN we can check for
1865             * the NULL of n
1866             */
1867             just = 0;
1868             if (*m == *n)
1869             {
1870                 m++;
1871                 count++;
1872                 n++;
1873             }
1874             else
1875             {
1876
1877                 not_matched:
1878
1879                 /*
1880                 * If there are no more characters in the
1881                 * string, but we still need to find another
1882                 * character (*m != NULL), then it will be
1883                 * impossible to match it
1884                 */
1885                 if (!*n)
1886                     return false;
1887
1888                 if (ma)
1889                 {
1890                     m = ma;
1891                     n = ++na;
1892                     count = acount;
1893                 }
1894                 else
1895                     return false;
1896             }
1897         }
1898     }
1899 }
1900
1901 // Return the type of an open file
1902 //
1903 // Some file types on some platforms seem seekable but in fact are not.
1904 // The main use of this function is to allow such cases to be detected
1905 // (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
1906 //
1907 // This is important for the archive streams, which benefit greatly from
1908 // being able to seek on a stream, but which will produce corrupt archives
1909 // if they unknowingly seek on a non-seekable stream.
1910 //
1911 // wxFILE_KIND_DISK is a good catch all return value, since other values
1912 // disable features of the archive streams. Some other value must be returned
1913 // for a file type that appears seekable but isn't.
1914 //
1915 // Known examples:
1916 //   *  Pipes on Windows
1917 //   *  Files on VMS with a record format other than StreamLF
1918 //
1919 wxFileKind wxGetFileKind(int fd)
1920 {
1921 #if defined __WXMSW__ && !defined __WXWINCE__ && defined wxGetOSFHandle
1922     switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
1923     {
1924         case FILE_TYPE_CHAR:
1925             return wxFILE_KIND_TERMINAL;
1926         case FILE_TYPE_DISK:
1927             return wxFILE_KIND_DISK;
1928         case FILE_TYPE_PIPE:
1929             return wxFILE_KIND_PIPE;
1930     }
1931
1932     return wxFILE_KIND_UNKNOWN;
1933
1934 #elif defined(__UNIX__)
1935     if (isatty(fd))
1936         return wxFILE_KIND_TERMINAL;
1937
1938     struct stat st;
1939     fstat(fd, &st);
1940
1941     if (S_ISFIFO(st.st_mode))
1942         return wxFILE_KIND_PIPE;
1943     if (!S_ISREG(st.st_mode))
1944         return wxFILE_KIND_UNKNOWN;
1945
1946     #if defined(__VMS__)
1947         if (st.st_fab_rfm != FAB$C_STMLF)
1948             return wxFILE_KIND_UNKNOWN;
1949     #endif
1950
1951     return wxFILE_KIND_DISK;
1952
1953 #else
1954     #define wxFILEKIND_STUB
1955     (void)fd;
1956     return wxFILE_KIND_DISK;
1957 #endif
1958 }
1959
1960 wxFileKind wxGetFileKind(FILE *fp)
1961 {
1962     // Note: The watcom rtl dll doesn't have fileno (the static lib does).
1963     //       Should be fixed in version 1.4.
1964 #if defined(wxFILEKIND_STUB) || wxONLY_WATCOM_EARLIER_THAN(1,4)
1965     (void)fp;
1966     return wxFILE_KIND_DISK;
1967 #else
1968     return fp ? wxGetFileKind(fileno(fp)) : wxFILE_KIND_UNKNOWN;
1969 #endif
1970 }
1971
1972 #ifdef __VISUALC__
1973     #pragma warning(default:4706)   // assignment within conditional expression
1974 #endif // VC++