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