src/common/filefn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        filefn.cpp
   3 // Purpose:     File- and directory-related functions
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "filefn.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26 #include "wx/defs.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #include "wx/utils.h"
  33 #include "wx/intl.h"
  34 #include "wx/file.h" // This does include filefn.h
  35 #include "wx/filename.h"
  36 #include "wx/dir.h"
  37
  38 // there are just too many of those...
  39 #ifdef __VISUALC__
  40     #pragma warning(disable:4706)   // assignment within conditional expression
  41 #endif // VC++
  42
  43 #include <ctype.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #if !defined(__WATCOMC__)
  48     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  49         #include <errno.h>
  50     #endif
  51 #endif
  52
  53 #if defined(__WXMAC__)
  54     #include  "wx/mac/private.h"  // includes mac headers
  55 #endif
  56
  57 #include "wx/log.h"
  58
  59 #ifdef __WINDOWS__
  60     #include "wx/msw/private.h"
  61     #include "wx/msw/mslu.h"
  62
  63     // sys/cygwin.h is needed for cygwin_conv_to_full_win32_path()
  64     //
  65     // note that it must be included after <windows.h>
  66     #ifdef __GNUWIN32__
  67         #ifdef __CYGWIN__
  68             #include <sys/cygwin.h>
  69         #endif
  70     #endif // __GNUWIN32__
  71
  72     // io.h is needed for _get_osfhandle()
  73     // Already included by filefn.h for many Windows compilers
  74     #if defined __MWERKS__ || defined __CYGWIN__
  75         #include <io.h>
  76     #endif
  77 #endif // __WINDOWS__
  78
  79 #if defined(__VMS__)
  80     #include <fab.h>
  81 #endif
  82
  83 // TODO: Borland probably has _wgetcwd as well?
  84 #ifdef _MSC_VER
  85     #define HAVE_WGETCWD
  86 #endif
  87
  88 // ----------------------------------------------------------------------------
  89 // constants
  90 // ----------------------------------------------------------------------------
  91
  92 #ifndef _MAXPATHLEN
  93     #define _MAXPATHLEN 1024
  94 #endif
  95
  96 #ifdef __WXMAC__
  97 #    include "MoreFilesX.h"
  98 #endif
  99
 100 // ----------------------------------------------------------------------------
 101 // private globals
 102 // ----------------------------------------------------------------------------
 103
 104 // MT-FIXME: get rid of this horror and all code using it
 105 static wxChar wxFileFunctionsBuffer[4*_MAXPATHLEN];
 106
 107 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 108 //
 109 // VisualAge C++ V4.0 cannot have any external linkage const decs
 110 // in headers included by more than one primary source
 111 //
 112 const int wxInvalidOffset = -1;
 113 #endif
 114
 115 // ----------------------------------------------------------------------------
 116 // macros
 117 // ----------------------------------------------------------------------------
 118
 119 // we need to translate Mac filenames before passing them to OS functions
 120 #define OS_FILENAME(s) (s.fn_str())
 121
 122 // ============================================================================
 123 // implementation
 124 // ============================================================================
 125
 126 #ifdef wxNEED_WX_UNISTD_H
 127
 128 WXDLLEXPORT int wxStat( const wxChar *file_name, wxStructStat *buf )
 129 {
 130     return stat( wxConvFile.cWX2MB( file_name ), buf );
 131 }
 132
 133 WXDLLEXPORT int wxAccess( const wxChar *pathname, int mode )
 134 {
 135     return access( wxConvFile.cWX2MB( pathname ), mode );
 136 }
 137
 138 WXDLLEXPORT int wxOpen( const wxChar *pathname, int flags, mode_t mode )
 139 {
 140     return open( wxConvFile.cWX2MB( pathname ), flags, mode );
 141 }
 142
 143 #endif
 144    // wxNEED_WX_UNISTD_H
 145
 146 // ----------------------------------------------------------------------------
 147 // wxPathList
 148 // ----------------------------------------------------------------------------
 149
 150 // IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
 151
 152 static inline wxChar* MYcopystring(const wxString& s)
 153 {
 154     wxChar* copy = new wxChar[s.length() + 1];
 155     return wxStrcpy(copy, s.c_str());
 156 }
 157
 158 static inline wxChar* MYcopystring(const wxChar* s)
 159 {
 160     wxChar* copy = new wxChar[wxStrlen(s) + 1];
 161     return wxStrcpy(copy, s);
 162 }
 163
 164 void wxPathList::Add (const wxString& path)
 165 {
 166     wxStringList::Add (WXSTRINGCAST path);
 167 }
 168
 169 // Add paths e.g. from the PATH environment variable
 170 void wxPathList::AddEnvList (const wxString& WXUNUSED_IN_WINCE(envVariable))
 171 {
 172     // No environment variables on WinCE
 173 #ifndef __WXWINCE__
 174     static const wxChar PATH_TOKS[] =
 175 #if defined(__WINDOWS__) || defined(__OS2__)
 176         /*
 177         The space has been removed from the tokenizers, otherwise a
 178         path such as "C:\Program Files" would be split into 2 paths:
 179         "C:\Program" and "Files"
 180         */
 181 //        wxT(" ;"); // Don't separate with colon in DOS (used for drive)
 182         wxT(";"); // Don't separate with colon in DOS (used for drive)
 183 #else
 184         wxT(" :;");
 185 #endif
 186
 187     wxString val ;
 188     if (wxGetEnv (WXSTRINGCAST envVariable, &val))
 189     {
 190         wxChar *s = MYcopystring (val);
 191         wxChar *save_ptr, *token = wxStrtok (s, PATH_TOKS, &save_ptr);
 192
 193         if (token)
 194         {
 195             Add(token);
 196             while (token)
 197             {
 198                 if ( (token = wxStrtok ((wxChar *) NULL, PATH_TOKS, &save_ptr))
 199                     != NULL )
 200                 {
 201                     Add(token);
 202                 }
 203             }
 204         }
 205
 206         // suppress warning about unused variable save_ptr when wxStrtok() is a
 207         // macro which throws away its third argument
 208         save_ptr = token;
 209
 210         delete [] s;
 211     }
 212 #endif // !__WXWINCE__
 213 }
 214
 215 // Given a full filename (with path), ensure that that file can
 216 // be accessed again USING FILENAME ONLY by adding the path
 217 // to the list if not already there.
 218 void wxPathList::EnsureFileAccessible (const wxString& path)
 219 {
 220     wxString path_only(wxPathOnly(path));
 221     if ( !path_only.empty() )
 222     {
 223         if ( !Member(path_only) )
 224             Add(path_only);
 225     }
 226 }
 227
 228 bool wxPathList::Member (const wxString& path)
 229 {
 230   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 231   {
 232       wxString path2( node->GetData() );
 233       if (
 234 #if defined(__WINDOWS__) || defined(__OS2__) || defined(__VMS__) || defined(__WXMAC__)
 235       // Case INDEPENDENT
 236           path.CompareTo (path2, wxString::ignoreCase) == 0
 237 #else
 238       // Case sensitive File System
 239           path.CompareTo (path2) == 0
 240 #endif
 241         )
 242         return true;
 243   }
 244   return false;
 245 }
 246
 247 wxString wxPathList::FindValidPath (const wxString& file)
 248 {
 249   if (wxFileExists (wxExpandPath(wxFileFunctionsBuffer, file)))
 250     return wxString(wxFileFunctionsBuffer);
 251
 252   wxChar buf[_MAXPATHLEN];
 253   wxStrcpy(buf, wxFileFunctionsBuffer);
 254
 255   wxChar *filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 256
 257   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 258     {
 259       const wxChar *path = node->GetData();
 260       wxStrcpy (wxFileFunctionsBuffer, path);
 261       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 262       if (ch != wxT('\\') && ch != wxT('/'))
 263         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 264       wxStrcat (wxFileFunctionsBuffer, filename);
 265 #ifdef __WINDOWS__
 266       wxUnix2DosFilename (wxFileFunctionsBuffer);
 267 #endif
 268       if (wxFileExists (wxFileFunctionsBuffer))
 269       {
 270         return wxString(wxFileFunctionsBuffer);        // Found!
 271       }
 272     }                                // for()
 273
 274   return wxEmptyString;                    // Not found
 275 }
 276
 277 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 278 {
 279     wxString f = FindValidPath(file);
 280     if ( f.empty() || wxIsAbsolutePath(f) )
 281         return f;
 282
 283     wxString buf;
 284     wxGetWorkingDirectory(wxStringBuffer(buf, _MAXPATHLEN), _MAXPATHLEN);
 285
 286     if ( !wxEndsWithPathSeparator(buf) )
 287     {
 288         buf += wxFILE_SEP_PATH;
 289     }
 290     buf += f;
 291
 292     return buf;
 293 }
 294
 295 bool
 296 wxFileExists (const wxString& filename)
 297 {
 298 #if defined(__WXPALMOS__)
 299     return false;
 300 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 301     // we must use GetFileAttributes() instead of the ANSI C functions because
 302     // it can cope with network (UNC) paths unlike them
 303     DWORD ret = ::GetFileAttributes(filename);
 304
 305     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 306 #else // !__WIN32__
 307     wxStructStat st;
 308 #ifndef wxNEED_WX_UNISTD_H
 309     return wxStat( filename.fn_str() , &st) == 0 && (st.st_mode & S_IFREG);
 310 #else
 311     return wxStat( filename , &st) == 0 && (st.st_mode & S_IFREG);
 312 #endif
 313 #endif // __WIN32__/!__WIN32__
 314 }
 315
 316 bool
 317 wxIsAbsolutePath (const wxString& filename)
 318 {
 319     if (!filename.empty())
 320     {
 321 #if defined(__WXMAC__) && !defined(__DARWIN__)
 322         // Classic or Carbon CodeWarrior like
 323         // Carbon with Apple DevTools is Unix like
 324
 325         // This seems wrong to me, but there is no fix. since
 326         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 327         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 328         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 329             return true ;
 330 #else
 331         // Unix like or Windows
 332         if (filename[0] == wxT('/'))
 333             return true;
 334 #endif
 335 #ifdef __VMS__
 336         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 337             return true;
 338 #endif
 339 #if defined(__WINDOWS__) || defined(__OS2__)
 340         // MSDOS like
 341         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 342             return true;
 343 #endif
 344     }
 345     return false ;
 346 }
 347
 348 /*
 349  * Strip off any extension (dot something) from end of file,
 350  * IF one exists. Inserts zero into buffer.
 351  *
 352  */
 353
 354 void wxStripExtension(wxChar *buffer)
 355 {
 356     int len = wxStrlen(buffer);
 357     int i = len-1;
 358     while (i > 0)
 359     {
 360         if (buffer[i] == wxT('.'))
 361         {
 362             buffer[i] = 0;
 363             break;
 364         }
 365         i --;
 366     }
 367 }
 368
 369 void wxStripExtension(wxString& buffer)
 370 {
 371     //RN:  Be careful about the handling the case where
 372     //buffer.Length() == 0
 373     for(size_t i = buffer.Length() - 1; i != wxString::npos; --i)
 374     {
 375         if (buffer.GetChar(i) == wxT('.'))
 376         {
 377           buffer = buffer.Left(i);
 378           break;
 379         }
 380     }
 381 }
 382
 383 // Destructive removal of /./ and /../ stuff
 384 wxChar *wxRealPath (wxChar *path)
 385 {
 386 #ifdef __WXMSW__
 387   static const wxChar SEP = wxT('\\');
 388   wxUnix2DosFilename(path);
 389 #else
 390   static const wxChar SEP = wxT('/');
 391 #endif
 392   if (path[0] && path[1]) {
 393     /* MATTHEW: special case "/./x" */
 394     wxChar *p;
 395     if (path[2] == SEP && path[1] == wxT('.'))
 396       p = &path[0];
 397     else
 398       p = &path[2];
 399     for (; *p; p++)
 400       {
 401         if (*p == SEP)
 402           {
 403             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 404               {
 405                 wxChar *q;
 406                 for (q = p - 1; q >= path && *q != SEP; q--)
 407                 {
 408                     // Empty
 409                 }
 410
 411                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 412                     && (q - 1 <= path || q[-1] != SEP))
 413                   {
 414                     wxStrcpy (q, p + 3);
 415                     if (path[0] == wxT('\0'))
 416                       {
 417                         path[0] = SEP;
 418                         path[1] = wxT('\0');
 419                       }
 420 #if defined(__WXMSW__) || defined(__OS2__)
 421                     /* Check that path[2] is NULL! */
 422                     else if (path[1] == wxT(':') && !path[2])
 423                       {
 424                         path[2] = SEP;
 425                         path[3] = wxT('\0');
 426                       }
 427 #endif
 428                     p = q - 1;
 429                   }
 430               }
 431             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 432               wxStrcpy (p, p + 2);
 433           }
 434       }
 435   }
 436   return path;
 437 }
 438
 439 // Must be destroyed
 440 wxChar *wxCopyAbsolutePath(const wxString& filename)
 441 {
 442   if (filename.empty())
 443     return (wxChar *) NULL;
 444
 445   if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename))) {
 446     wxChar  buf[_MAXPATHLEN];
 447     buf[0] = wxT('\0');
 448     wxGetWorkingDirectory(buf, WXSIZEOF(buf));
 449     wxChar ch = buf[wxStrlen(buf) - 1];
 450 #ifdef __WXMSW__
 451     if (ch != wxT('\\') && ch != wxT('/'))
 452         wxStrcat(buf, wxT("\\"));
 453 #else
 454     if (ch != wxT('/'))
 455         wxStrcat(buf, wxT("/"));
 456 #endif
 457     wxStrcat(buf, wxFileFunctionsBuffer);
 458     return MYcopystring( wxRealPath(buf) );
 459   }
 460   return MYcopystring( wxFileFunctionsBuffer );
 461 }
 462
 463 /*-
 464  Handles:
 465    ~/ => home dir
 466    ~user/ => user's home dir
 467    If the environment variable a = "foo" and b = "bar" then:
 468    Unix:
 469         $a        =>        foo
 470         $a$b        =>        foobar
 471         $a.c        =>        foo.c
 472         xxx$a        =>        xxxfoo
 473         ${a}!        =>        foo!
 474         $(b)!        =>        bar!
 475         \$a        =>        \$a
 476    MSDOS:
 477         $a        ==>        $a
 478         $(a)        ==>        foo
 479         $(a)$b        ==>        foo$b
 480         $(a)$(b)==>        foobar
 481         test.$$        ==>        test.$$
 482  */
 483
 484 /* input name in name, pathname output to buf. */
 485
 486 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 487 {
 488     register wxChar *d, *s, *nm;
 489     wxChar          lnm[_MAXPATHLEN];
 490     int             q;
 491
 492     // Some compilers don't like this line.
 493 //    const wxChar    trimchars[] = wxT("\n \t");
 494
 495     wxChar      trimchars[4];
 496     trimchars[0] = wxT('\n');
 497     trimchars[1] = wxT(' ');
 498     trimchars[2] = wxT('\t');
 499     trimchars[3] = 0;
 500
 501 #ifdef __WXMSW__
 502     const wxChar     SEP = wxT('\\');
 503 #else
 504     const wxChar     SEP = wxT('/');
 505 #endif
 506     buf[0] = wxT('\0');
 507     if (name == NULL || *name == wxT('\0'))
 508         return buf;
 509     nm = MYcopystring(name); // Make a scratch copy
 510     wxChar *nm_tmp = nm;
 511
 512     /* Skip leading whitespace and cr */
 513     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 514         nm++;
 515     /* And strip off trailing whitespace and cr */
 516     s = nm + (q = wxStrlen(nm)) - 1;
 517     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 518         *s = wxT('\0');
 519
 520     s = nm;
 521     d = lnm;
 522 #ifdef __WXMSW__
 523     q = FALSE;
 524 #else
 525     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 526 #endif
 527
 528     /* Expand inline environment variables */
 529 #ifdef __VISAGECPP__
 530     while (*d)
 531     {
 532       *d++ = *s;
 533       if(*s == wxT('\\'))
 534       {
 535         *(d - 1) = *++s;
 536         if (*d)
 537         {
 538           s++;
 539           continue;
 540         }
 541         else
 542            break;
 543       }
 544       else
 545 #else
 546     while ((*d++ = *s) != 0) {
 547 #  ifndef __WXMSW__
 548         if (*s == wxT('\\')) {
 549             if ((*(d - 1) = *++s)!=0) {
 550                 s++;
 551                 continue;
 552             } else
 553                 break;
 554         } else
 555 #  endif
 556 #endif
 557             // No env variables on WinCE
 558 #ifndef __WXWINCE__
 559 #ifdef __WXMSW__
 560         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 561 #else
 562         if (*s++ == wxT('$'))
 563 #endif
 564         {
 565             register wxChar  *start = d;
 566             register int     braces = (*s == wxT('{') || *s == wxT('('));
 567             register wxChar  *value;
 568             while ((*d++ = *s) != 0)
 569                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 570                     break;
 571                 else
 572                     s++;
 573             *--d = 0;
 574             value = wxGetenv(braces ? start + 1 : start);
 575             if (value) {
 576                 for ((d = start - 1); (*d++ = *value++) != 0;)
 577                 {
 578                     // Empty
 579                 }
 580
 581                 d--;
 582                 if (braces && *s)
 583                     s++;
 584             }
 585         }
 586 #endif
 587         // __WXWINCE__
 588     }
 589
 590     /* Expand ~ and ~user */
 591     nm = lnm;
 592     if (nm[0] == wxT('~') && !q)
 593     {
 594         /* prefix ~ */
 595         if (nm[1] == SEP || nm[1] == 0)
 596         {        /* ~/filename */
 597         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 598             if ((s = WXSTRINGCAST wxGetUserHome(wxEmptyString)) != NULL) {
 599                 if (*++nm)
 600                     nm++;
 601             }
 602         } else
 603         {                /* ~user/filename */
 604             register wxChar  *nnm;
 605             register wxChar  *home;
 606             for (s = nm; *s && *s != SEP; s++)
 607             {
 608                 // Empty
 609             }
 610             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 611             was_sep = (*s == SEP);
 612             nnm = *s ? s + 1 : s;
 613             *s = 0;
 614         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 615             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL)
 616             {
 617                 if (was_sep) /* replace only if it was there: */
 618                     *s = SEP;
 619                 s = NULL;
 620             }
 621             else
 622             {
 623                 nm = nnm;
 624                 s = home;
 625             }
 626         }
 627     }
 628
 629     d = buf;
 630     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 631         /* Copy home dir */
 632         while (wxT('\0') != (*d++ = *s++))
 633           /* loop */;
 634         // Handle root home
 635         if (d - 1 > buf && *(d - 2) != SEP)
 636           *(d - 1) = SEP;
 637     }
 638     s = nm;
 639     while ((*d++ = *s++) != 0)
 640     {
 641         // Empty
 642     }
 643     delete[] nm_tmp; // clean up alloc
 644     /* Now clean up the buffer */
 645     return wxRealPath(buf);
 646 }
 647
 648 /* Contract Paths to be build upon an environment variable
 649    component:
 650
 651    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 652
 653    The call wxExpandPath can convert these back!
 654  */
 655 wxChar *
 656 wxContractPath (const wxString& filename,
 657                 const wxString& WXUNUSED_IN_WINCE(envname),
 658                 const wxString& user)
 659 {
 660   static wxChar dest[_MAXPATHLEN];
 661
 662   if (filename.empty())
 663     return (wxChar *) NULL;
 664
 665   wxStrcpy (dest, WXSTRINGCAST filename);
 666 #ifdef __WXMSW__
 667   wxUnix2DosFilename(dest);
 668 #endif
 669
 670   // Handle environment
 671   const wxChar *val;
 672 #ifndef __WXWINCE__
 673   wxChar *tcp;
 674   if (!envname.empty() && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 675      (tcp = wxStrstr (dest, val)) != NULL)
 676     {
 677         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 678         *tcp++ = wxT('$');
 679         *tcp++ = wxT('{');
 680         wxStrcpy (tcp, WXSTRINGCAST envname);
 681         wxStrcat (tcp, wxT("}"));
 682         wxStrcat (tcp, wxFileFunctionsBuffer);
 683     }
 684 #endif
 685
 686   // Handle User's home (ignore root homes!)
 687   val = wxGetUserHome (user);
 688   if (!val)
 689     return dest;
 690
 691   const size_t len = wxStrlen(val);
 692   if (len <= 2)
 693     return dest;
 694
 695   if (wxStrncmp(dest, val, len) == 0)
 696   {
 697     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 698     if (!user.empty())
 699            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 700     wxStrcat(wxFileFunctionsBuffer, dest + len);
 701     wxStrcpy (dest, wxFileFunctionsBuffer);
 702   }
 703
 704   return dest;
 705 }
 706
 707 // Return just the filename, not the path (basename)
 708 wxChar *wxFileNameFromPath (wxChar *path)
 709 {
 710     wxString p = path;
 711     wxString n = wxFileNameFromPath(p);
 712
 713     return path + p.length() - n.length();
 714 }
 715
 716 wxString wxFileNameFromPath (const wxString& path)
 717 {
 718     wxString name, ext;
 719     wxFileName::SplitPath(path, NULL, &name, &ext);
 720
 721     wxString fullname = name;
 722     if ( !ext.empty() )
 723     {
 724         fullname << wxFILE_SEP_EXT << ext;
 725     }
 726
 727     return fullname;
 728 }
 729
 730 // Return just the directory, or NULL if no directory
 731 wxChar *
 732 wxPathOnly (wxChar *path)
 733 {
 734     if (path && *path)
 735     {
 736         static wxChar buf[_MAXPATHLEN];
 737
 738         // Local copy
 739         wxStrcpy (buf, path);
 740
 741         int l = wxStrlen(path);
 742         int i = l - 1;
 743
 744         // Search backward for a backward or forward slash
 745         while (i > -1)
 746         {
 747 #if defined(__WXMAC__) && !defined(__DARWIN__)
 748             // Classic or Carbon CodeWarrior like
 749             // Carbon with Apple DevTools is Unix like
 750             if (path[i] == wxT(':') )
 751             {
 752                 buf[i] = 0;
 753                 return buf;
 754             }
 755 #else
 756             // Unix like or Windows
 757             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 758             {
 759                 buf[i] = 0;
 760                 return buf;
 761             }
 762 #endif
 763 #ifdef __VMS__
 764             if (path[i] == wxT(']'))
 765             {
 766                 buf[i+1] = 0;
 767                 return buf;
 768             }
 769 #endif
 770             i --;
 771         }
 772
 773 #if defined(__WXMSW__) || defined(__OS2__)
 774         // Try Drive specifier
 775         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 776         {
 777             // A:junk --> A:. (since A:.\junk Not A:\junk)
 778             buf[2] = wxT('.');
 779             buf[3] = wxT('\0');
 780             return buf;
 781         }
 782 #endif
 783     }
 784     return (wxChar *) NULL;
 785 }
 786
 787 // Return just the directory, or NULL if no directory
 788 wxString wxPathOnly (const wxString& path)
 789 {
 790     if (!path.empty())
 791     {
 792         wxChar buf[_MAXPATHLEN];
 793
 794         // Local copy
 795         wxStrcpy (buf, WXSTRINGCAST path);
 796
 797         int l = path.Length();
 798         int i = l - 1;
 799
 800         // Search backward for a backward or forward slash
 801         while (i > -1)
 802         {
 803 #if defined(__WXMAC__) && !defined(__DARWIN__)
 804             // Classic or Carbon CodeWarrior like
 805             // Carbon with Apple DevTools is Unix like
 806             if (path[i] == wxT(':') )
 807             {
 808                 buf[i] = 0;
 809                 return wxString(buf);
 810             }
 811 #else
 812             // Unix like or Windows
 813             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 814             {
 815                 // Don't return an empty string
 816                 if (i == 0)
 817                     i ++;
 818                 buf[i] = 0;
 819                 return wxString(buf);
 820             }
 821 #endif
 822 #ifdef __VMS__
 823             if (path[i] == wxT(']'))
 824             {
 825                 buf[i+1] = 0;
 826                 return wxString(buf);
 827             }
 828 #endif
 829             i --;
 830         }
 831
 832 #if defined(__WXMSW__) || defined(__OS2__)
 833         // Try Drive specifier
 834         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 835         {
 836             // A:junk --> A:. (since A:.\junk Not A:\junk)
 837             buf[2] = wxT('.');
 838             buf[3] = wxT('\0');
 839             return wxString(buf);
 840         }
 841 #endif
 842     }
 843     return wxEmptyString;
 844 }
 845
 846 // Utility for converting delimiters in DOS filenames to UNIX style
 847 // and back again - or we get nasty problems with delimiters.
 848 // Also, convert to lower case, since case is significant in UNIX.
 849
 850 #if defined(__WXMAC__)
 851
 852 #if TARGET_API_MAC_OSX
 853 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 854 #else
 855 #define kDefaultPathStyle kCFURLHFSPathStyle
 856 #endif
 857
 858 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 859 {
 860     CFURLRef fullURLRef;
 861     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 862     if ( additionalPathComponent )
 863     {
 864         CFURLRef parentURLRef = fullURLRef ;
 865         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 866             additionalPathComponent,false);
 867         CFRelease( parentURLRef ) ;
 868     }
 869     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 870     CFRelease( fullURLRef ) ;
 871     return wxMacCFStringHolder(cfString).AsString(wxLocale::GetSystemEncoding());
 872 }
 873
 874 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 875 {
 876     OSStatus err = noErr ;
 877     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) , kDefaultPathStyle, false);
 878     if ( NULL != url )
 879     {
 880         if ( CFURLGetFSRef(url, fsRef) == false )
 881             err = fnfErr ;
 882         CFRelease( url ) ;
 883     }
 884     else
 885     {
 886         err = fnfErr ;
 887     }
 888     return err ;
 889 }
 890
 891 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 892 {
 893     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 894                                                       uniname->unicode,
 895                                                       uniname->length );
 896     return wxMacCFStringHolder(cfname).AsString() ;
 897 }
 898
 899 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 900 {
 901     FSRef fsRef ;
 902     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 903     {
 904         return wxMacFSRefToPath( &fsRef ) ;
 905     }
 906     return wxEmptyString ;
 907 }
 908
 909 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 910 {
 911     OSStatus err = noErr ;
 912     FSRef fsRef ;
 913     wxMacPathToFSRef( path , &fsRef ) ;
 914     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 915 }
 916
 917 #endif // __WXMAC__
 918
 919 void
 920 wxDos2UnixFilename (wxChar *s)
 921 {
 922   if (s)
 923     while (*s)
 924       {
 925         if (*s == _T('\\'))
 926           *s = _T('/');
 927 #ifdef __WXMSW__
 928         else
 929           *s = (wxChar)wxTolower (*s);        // Case INDEPENDENT
 930 #endif
 931         s++;
 932       }
 933 }
 934
 935 void
 936 #if defined(__WXMSW__) || defined(__OS2__)
 937 wxUnix2DosFilename (wxChar *s)
 938 #else
 939 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
 940 #endif
 941 {
 942 // Yes, I really mean this to happen under DOS only! JACS
 943 #if defined(__WXMSW__) || defined(__OS2__)
 944   if (s)
 945     while (*s)
 946       {
 947         if (*s == wxT('/'))
 948           *s = wxT('\\');
 949         s++;
 950       }
 951 #endif
 952 }
 953
 954 // Concatenate two files to form third
 955 bool
 956 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 957 {
 958 #if wxUSE_FILE
 959
 960     wxFile in1(file1), in2(file2);
 961     wxTempFile out(file3);
 962
 963     if ( !in1.IsOpened() || !in2.IsOpened() || !out.IsOpened() )
 964         return false;
 965
 966     ssize_t ofs;
 967     unsigned char buf[1024];
 968
 969     for( int i=0; i<2; i++)
 970     {
 971         wxFile *in = i==0 ? &in1 : &in2;
 972         do{
 973             if ( (ofs = in->Read(buf,WXSIZEOF(buf))) == wxInvalidOffset ) return false;
 974             if ( ofs > 0 )
 975                 if ( !out.Write(buf,ofs) )
 976                     return false;
 977         } while ( ofs == (ssize_t)WXSIZEOF(buf) );
 978     }
 979
 980     return out.Commit();
 981
 982 #else
 983
 984     wxUnusedVar(file1);
 985     wxUnusedVar(file2);
 986     wxUnusedVar(file3);
 987     return false;
 988
 989 #endif
 990 }
 991
 992 // Copy files
 993 bool
 994 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
 995 {
 996 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 997     // CopyFile() copies file attributes and modification time too, so use it
 998     // instead of our code if available
 999     //
1000     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1001     if ( !::CopyFile(file1, file2, !overwrite) )
1002     {
1003         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1004                       file1.c_str(), file2.c_str());
1005
1006         return false;
1007     }
1008 #elif defined(__OS2__)
1009     if ( ::DosCopy((PSZ)file1.c_str(), (PSZ)file2.c_str(), overwrite ? DCPY_EXISTING : 0) != 0 )
1010         return false;
1011 #elif defined(__PALMOS__)
1012     // TODO with http://www.palmos.com/dev/support/docs/protein_books/Memory_Databases_Files/
1013     return false;
1014 #elif wxUSE_FILE // !Win32
1015
1016     wxStructStat fbuf;
1017     // get permissions of file1
1018     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1019     {
1020         // the file probably doesn't exist or we haven't the rights to read
1021         // from it anyhow
1022         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1023                       file1.c_str());
1024         return false;
1025     }
1026
1027     // open file1 for reading
1028     wxFile fileIn(file1, wxFile::read);
1029     if ( !fileIn.IsOpened() )
1030         return false;
1031
1032     // remove file2, if it exists. This is needed for creating
1033     // file2 with the correct permissions in the next step
1034     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1035     {
1036         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1037                       file2.c_str());
1038         return false;
1039     }
1040
1041     // reset the umask as we want to create the file with exactly the same
1042     // permissions as the original one
1043     wxCHANGE_UMASK(0);
1044
1045     // create file2 with the same permissions than file1 and open it for
1046     // writing
1047
1048     wxFile fileOut;
1049     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1050         return false;
1051
1052     // copy contents of file1 to file2
1053     char buf[4096];
1054     size_t count;
1055     for ( ;; )
1056     {
1057         count = fileIn.Read(buf, WXSIZEOF(buf));
1058         if ( fileIn.Error() )
1059             return false;
1060
1061         // end of file?
1062         if ( !count )
1063             break;
1064
1065         if ( fileOut.Write(buf, count) < count )
1066             return false;
1067     }
1068
1069     // we can expect fileIn to be closed successfully, but we should ensure
1070     // that fileOut was closed as some write errors (disk full) might not be
1071     // detected before doing this
1072     if ( !fileIn.Close() || !fileOut.Close() )
1073         return false;
1074
1075 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1076     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1077     // however
1078     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1079     {
1080         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1081                       file2.c_str());
1082         return false;
1083     }
1084 #endif // OS/2 || Mac
1085
1086 #else // !Win32 && ! wxUSE_FILE
1087
1088     // impossible to simulate with wxWidgets API
1089     wxUnusedVar(file1);
1090     wxUnusedVar(file2);
1091     wxUnusedVar(overwrite);
1092     return false;
1093
1094 #endif // __WXMSW__ && __WIN32__
1095
1096     return true;
1097 }
1098
1099 bool
1100 wxRenameFile (const wxString& file1, const wxString& file2)
1101 {
1102 #if !defined(__WXWINCE__) && !defined(__WXPALMOS__)
1103     // Normal system call
1104   if ( wxRename (file1, file2) == 0 )
1105     return true;
1106 #endif
1107
1108   // Try to copy
1109   if (wxCopyFile(file1, file2)) {
1110     wxRemoveFile(file1);
1111     return true;
1112   }
1113   // Give up
1114   return false;
1115 }
1116
1117 bool wxRemoveFile(const wxString& file)
1118 {
1119 #if defined(__VISUALC__) \
1120  || defined(__BORLANDC__) \
1121  || defined(__WATCOMC__) \
1122  || defined(__DMC__) \
1123  || defined(__GNUWIN32__) \
1124  || (defined(__MWERKS__) && defined(__MSL__))
1125     int res = wxRemove(file);
1126 #elif defined(__WXMAC__)
1127     int res = unlink(wxFNCONV(file));
1128 #elif defined(__WXPALMOS__)
1129     int res = 1;
1130     // TODO with VFSFileDelete()
1131 #else
1132     int res = unlink(OS_FILENAME(file));
1133 #endif
1134
1135     return res == 0;
1136 }
1137
1138 bool wxMkdir(const wxString& dir, int perm)
1139 {
1140 #if defined(__WXPALMOS__)
1141     return false;
1142 #elif defined(__WXMAC__) && !defined(__UNIX__)
1143     return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1144 #else // !Mac
1145     const wxChar *dirname = dir.c_str();
1146
1147     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1148     // for the GNU compiler
1149 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1150   #if defined(MSVCRT)
1151     wxUnusedVar(perm);
1152     if ( mkdir(wxFNCONV(dirname)) != 0 )
1153   #else
1154     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1155   #endif
1156 #elif defined(__OS2__)
1157     wxUnusedVar(perm);
1158     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1159 #elif defined(__DOS__)
1160   #if defined(__WATCOMC__)
1161     (void)perm;
1162     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1163   #elif defined(__DJGPP__)
1164     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1165   #else
1166     #error "Unsupported DOS compiler!"
1167   #endif
1168 #else  // !MSW, !DOS and !OS/2 VAC++
1169     wxUnusedVar(perm);
1170 #ifdef __WXWINCE__
1171     if ( !CreateDirectory(dirname, NULL) )
1172 #else
1173     if ( wxMkDir(dir.fn_str()) != 0 )
1174 #endif
1175 #endif // !MSW/MSW
1176     {
1177         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1178
1179         return false;
1180     }
1181
1182     return true;
1183 #endif // Mac/!Mac
1184 }
1185
1186 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1187 {
1188 #if defined(__VMS__)
1189     return false; //to be changed since rmdir exists in VMS7.x
1190 #elif defined(__OS2__)
1191     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1192 #elif defined(__WXWINCE__)
1193     return (CreateDirectory(dir, NULL) != 0);
1194 #elif defined(__WXPALMOS__)
1195     // TODO with VFSFileRename()
1196     return false;
1197 #else
1198     return (wxRmDir(OS_FILENAME(dir)) == 0);
1199 #endif
1200 }
1201
1202 // does the path exists? (may have or not '/' or '\\' at the end)
1203 bool wxDirExists(const wxChar *pszPathName)
1204 {
1205     wxString strPath(pszPathName);
1206
1207 #if defined(__WINDOWS__) || defined(__OS2__)
1208     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1209     // so remove all trailing backslashes from the path - but don't do this for
1210     // the pathes "d:\" (which are different from "d:") nor for just "\"
1211     while ( wxEndsWithPathSeparator(strPath) )
1212     {
1213         size_t len = strPath.length();
1214         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1215             break;
1216
1217         strPath.Truncate(len - 1);
1218     }
1219 #endif // __WINDOWS__
1220
1221 #ifdef __OS2__
1222     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1223     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1224         strPath << _T('.');
1225 #endif
1226
1227 #if defined(__WXPALMOS__)
1228     return false;
1229 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
1230     // stat() can't cope with network paths
1231     DWORD ret = ::GetFileAttributes(strPath);
1232
1233     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1234 #elif defined(__OS2__)
1235     return (bool)(::DosSetCurrentDir((PSZ)(WXSTRINGCAST strPath)));
1236 #else // !__WIN32__
1237
1238     wxStructStat st;
1239 #ifndef __VISAGECPP__
1240     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1241 #else
1242     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1243     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1244 #endif
1245
1246 #endif // __WIN32__/!__WIN32__
1247 }
1248
1249 // Get a temporary filename, opening and closing the file.
1250 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1251 {
1252 #if wxUSE_FILE
1253     wxString filename = wxFileName::CreateTempFileName(prefix);
1254     if ( filename.empty() )
1255         return NULL;
1256
1257     if ( buf )
1258         wxStrcpy(buf, filename);
1259     else
1260         buf = MYcopystring(filename);
1261
1262     return buf;
1263 #else
1264     wxUnusedVar(prefix);
1265     wxUnusedVar(buf);
1266     // wxFileName::CreateTempFileName needs wxFile class enabled
1267     return NULL;
1268 #endif
1269 }
1270
1271 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1272 {
1273     buf = wxGetTempFileName(prefix);
1274
1275     return !buf.empty();
1276 }
1277
1278 // Get first file name matching given wild card.
1279
1280 static wxDir *gs_dir = NULL;
1281 static wxString gs_dirPath;
1282
1283 wxString wxFindFirstFile(const wxChar *spec, int flags)
1284 {
1285     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1286     if ( gs_dirPath.empty() )
1287         gs_dirPath = wxT(".");
1288     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1289         gs_dirPath << wxFILE_SEP_PATH;
1290
1291     if (gs_dir)
1292         delete gs_dir;
1293     gs_dir = new wxDir(gs_dirPath);
1294
1295     if ( !gs_dir->IsOpened() )
1296     {
1297         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1298         return wxEmptyString;
1299     }
1300
1301     int dirFlags;
1302     switch (flags)
1303     {
1304         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1305         case wxFILE: dirFlags = wxDIR_FILES; break;
1306         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1307     }
1308
1309     wxString result;
1310     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1311     if ( result.empty() )
1312     {
1313         wxDELETE(gs_dir);
1314         return result;
1315     }
1316
1317     return gs_dirPath + result;
1318 }
1319
1320 wxString wxFindNextFile()
1321 {
1322     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1323
1324     wxString result;
1325     gs_dir->GetNext(&result);
1326
1327     if ( result.empty() )
1328     {
1329         wxDELETE(gs_dir);
1330         return result;
1331     }
1332
1333     return gs_dirPath + result;
1334 }
1335
1336
1337 // Get current working directory.
1338 // If buf is NULL, allocates space using new, else
1339 // copies into buf.
1340 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1341 {
1342 #if defined(__WXPALMOS__)
1343     // TODO ?
1344     return NULL;
1345 #elif defined(__WXWINCE__)
1346     // TODO
1347     wxUnusedVar(buf);
1348     wxUnusedVar(sz);
1349     return NULL;
1350 #else
1351     if ( !buf )
1352     {
1353         buf = new wxChar[sz + 1];
1354     }
1355
1356     bool ok wxDUMMY_INITIALIZE(false);
1357
1358     // for the compilers which have Unicode version of _getcwd(), call it
1359     // directly, for the others call the ANSI version and do the translation
1360 #if !wxUSE_UNICODE
1361     #define cbuf buf
1362 #else // wxUSE_UNICODE
1363     bool needsANSI = true;
1364
1365     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1366         // This is not legal code as the compiler
1367         // is allowed destroy the wxCharBuffer.
1368         // wxCharBuffer c_buffer(sz);
1369         // char *cbuf = (char*)(const char*)c_buffer;
1370         char cbuf[_MAXPATHLEN];
1371     #endif
1372
1373     #ifdef HAVE_WGETCWD
1374         #if wxUSE_UNICODE_MSLU
1375             if ( wxGetOsVersion() != wxWIN95 )
1376         #else
1377             char *cbuf = NULL; // never really used because needsANSI will always be false
1378         #endif
1379             {
1380                 ok = _wgetcwd(buf, sz) != NULL;
1381                 needsANSI = false;
1382             }
1383     #endif
1384
1385     if ( needsANSI )
1386 #endif // wxUSE_UNICODE
1387     {
1388     #if defined(_MSC_VER) || defined(__MINGW32__)
1389         ok = _getcwd(cbuf, sz) != NULL;
1390     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1391         char lbuf[1024] ;
1392         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1393         {
1394             wxString res( lbuf , *wxConvCurrent ) ;
1395             wxStrcpy( buf , res ) ;
1396             ok = true;
1397         }
1398         else
1399             ok = false ;
1400     #elif defined(__OS2__)
1401         APIRET rc;
1402         ULONG ulDriveNum = 0;
1403         ULONG ulDriveMap = 0;
1404         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1405         ok = rc == 0;
1406         if (ok)
1407         {
1408             sz -= 3;
1409             rc = ::DosQueryCurrentDir( 0 // current drive
1410                                       ,cbuf + 3
1411                                       ,(PULONG)&sz
1412                                      );
1413             cbuf[0] = char('A' + (ulDriveNum - 1));
1414             cbuf[1] = ':';
1415             cbuf[2] = '\\';
1416             ok = rc == 0;
1417         }
1418     #else // !Win32/VC++ !Mac !OS2
1419         ok = getcwd(cbuf, sz) != NULL;
1420     #endif // platform
1421
1422     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1423         // finally convert the result to Unicode if needed
1424         wxConvFile.MB2WC(buf, cbuf, sz);
1425     #endif // wxUSE_UNICODE
1426     }
1427
1428     if ( !ok )
1429     {
1430         wxLogSysError(_("Failed to get the working directory"));
1431
1432         // VZ: the old code used to return "." on error which didn't make any
1433         //     sense at all to me - empty string is a better error indicator
1434         //     (NULL might be even better but I'm afraid this could lead to
1435         //     problems with the old code assuming the return is never NULL)
1436         buf[0] = _T('\0');
1437     }
1438     else // ok, but we might need to massage the path into the right format
1439     {
1440 #ifdef __DJGPP__
1441         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1442         //     with / deliminers. We don't like that.
1443         for (wxChar *ch = buf; *ch; ch++)
1444         {
1445             if (*ch == wxT('/'))
1446                 *ch = wxT('\\');
1447         }
1448 #endif // __DJGPP__
1449
1450 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1451 //      he needs Unix as opposed to Win32 pathnames
1452 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1453         // another example of DOS/Unix mix (Cygwin)
1454         wxString pathUnix = buf;
1455         cygwin_conv_to_full_win32_path(pathUnix, buf);
1456 #endif // __CYGWIN__
1457     }
1458
1459     return buf;
1460
1461 #if !wxUSE_UNICODE
1462     #undef cbuf
1463 #endif
1464
1465 #endif
1466     // __WXWINCE__
1467 }
1468
1469 wxString wxGetCwd()
1470 {
1471     wxChar *buffer = new wxChar[_MAXPATHLEN];
1472     wxGetWorkingDirectory(buffer, _MAXPATHLEN);
1473     wxString str( buffer );
1474     delete [] buffer;
1475
1476     return str;
1477 }
1478
1479 bool wxSetWorkingDirectory(const wxString& d)
1480 {
1481 #if defined(__OS2__)
1482     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1483 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1484     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1485 #elif defined(__WINDOWS__)
1486
1487 #ifdef __WIN32__
1488 #ifdef __WXWINCE__
1489     // No equivalent in WinCE
1490     wxUnusedVar(d);
1491     return false;
1492 #else
1493     return (bool)(SetCurrentDirectory(d) != 0);
1494 #endif
1495 #else
1496     // Must change drive, too.
1497     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1498     if (isDriveSpec)
1499     {
1500         wxChar firstChar = d[0];
1501
1502         // To upper case
1503         if (firstChar > 90)
1504             firstChar = firstChar - 32;
1505
1506         // To a drive number
1507         unsigned int driveNo = firstChar - 64;
1508         if (driveNo > 0)
1509         {
1510             unsigned int noDrives;
1511             _dos_setdrive(driveNo, &noDrives);
1512         }
1513     }
1514     bool success = (chdir(WXSTRINGCAST d) == 0);
1515
1516     return success;
1517 #endif
1518
1519 #endif
1520 }
1521
1522 // Get the OS directory if appropriate (such as the Windows directory).
1523 // On non-Windows platform, probably just return the empty string.
1524 wxString wxGetOSDirectory()
1525 {
1526 #ifdef __WXWINCE__
1527     return wxString(wxT("\\Windows"));
1528 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1529     wxChar buf[256];
1530     GetWindowsDirectory(buf, 256);
1531     return wxString(buf);
1532 #elif defined(__WXMAC__)
1533     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1534 #else
1535     return wxEmptyString;
1536 #endif
1537 }
1538
1539 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1540 {
1541     size_t len = wxStrlen(pszFileName);
1542
1543     return len && wxIsPathSeparator(pszFileName[len - 1]);
1544 }
1545
1546 // find a file in a list of directories, returns false if not found
1547 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1548 {
1549     // we assume that it's not empty
1550     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1551                  _T("empty file name in wxFindFileInPath"));
1552
1553     // skip path separator in the beginning of the file name if present
1554     if ( wxIsPathSeparator(*pszFile) )
1555         pszFile++;
1556
1557     // copy the path (strtok will modify it)
1558     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1559     wxStrcpy(szPath, pszPath);
1560
1561     wxString strFile;
1562     wxChar *pc, *save_ptr;
1563     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1564           pc != NULL;
1565           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1566     {
1567         // search for the file in this directory
1568         strFile = pc;
1569         if ( !wxEndsWithPathSeparator(pc) )
1570             strFile += wxFILE_SEP_PATH;
1571         strFile += pszFile;
1572
1573         if ( wxFileExists(strFile) ) {
1574             *pStr = strFile;
1575             break;
1576         }
1577     }
1578
1579     // suppress warning about unused variable save_ptr when wxStrtok() is a
1580     // macro which throws away its third argument
1581     save_ptr = pc;
1582
1583     delete [] szPath;
1584
1585     return pc != NULL;  // if true => we breaked from the loop
1586 }
1587
1588 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1589                              wxString *pstrPath,
1590                              wxString *pstrName,
1591                              wxString *pstrExt)
1592 {
1593     // it can be empty, but it shouldn't be NULL
1594     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1595
1596     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1597 }
1598
1599 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1600 {
1601 #if defined(__WXPALMOS__)
1602     return 0;
1603 #elif defined(__WXWINCE__)
1604     FILETIME ftLastWrite;
1605     AutoHANDLE hFile(::CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
1606                                     NULL, 0, FILE_ATTRIBUTE_NORMAL, 0));
1607
1608     if ( !hFile.IsOk() )
1609         return 0;
1610
1611     if ( !::GetFileTime(hFile, NULL, NULL, &ftLastWrite) )
1612         return 0;
1613
1614     // sure we want to translate to local time here?
1615     FILETIME ftLocal;
1616     if ( !::FileTimeToLocalFileTime(&ftLastWrite, &ftLocal) )
1617     {
1618         wxLogLastError(_T("FileTimeToLocalFileTime"));
1619     }
1620
1621     // FILETIME is a counted in 100-ns since 1601-01-01, convert it to
1622     // number of seconds since 1970-01-01
1623     ULARGE_INTEGER uli;
1624     uli.LowPart = ftLocal.dwLowDateTime;
1625     uli.HighPart = ftLocal.dwHighDateTime;
1626
1627     ULONGLONG ull = uli.QuadPart;
1628     ull /= wxULL(10000000);     // number of 100ns intervals in 1s
1629     ull -= wxULL(11644473600);  // 1970-01-01 - 1601-01-01 in seconds
1630
1631     return wx_static_cast(time_t, ull);
1632 #else
1633     wxStructStat buf;
1634     if ( wxStat( filename, &buf) != 0 )
1635         return 0;
1636
1637     return buf.st_mtime;
1638 #endif
1639 }
1640
1641
1642 // Parses the filterStr, returning the number of filters.
1643 // Returns 0 if none or if there's a problem.
1644 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpeg"
1645
1646 int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr,
1647                                            wxArrayString& descriptions,
1648                                            wxArrayString& filters)
1649 {
1650     descriptions.Clear();
1651     filters.Clear();
1652
1653     wxString str(filterStr);
1654
1655     wxString description, filter;
1656     int pos = 0;
1657     while( pos != wxNOT_FOUND )
1658     {
1659         pos = str.Find(wxT('|'));
1660         if ( pos == wxNOT_FOUND )
1661         {
1662             // if there are no '|'s at all in the string just take the entire
1663             // string as filter and make description empty for later autocompletion
1664             if ( filters.IsEmpty() )
1665             {
1666                 descriptions.Add(wxEmptyString);
1667                 filters.Add(filterStr);
1668             }
1669             else
1670             {
1671                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1672             }
1673
1674             break;
1675         }
1676
1677         description = str.Left(pos);
1678         str = str.Mid(pos + 1);
1679         pos = str.Find(wxT('|'));
1680         if ( pos == wxNOT_FOUND )
1681         {
1682             filter = str;
1683         }
1684         else
1685         {
1686             filter = str.Left(pos);
1687             str = str.Mid(pos + 1);
1688         }
1689
1690         descriptions.Add(description);
1691         filters.Add(filter);
1692     }
1693
1694 #if defined(__WXMOTIF__)
1695     // split it so there is one wildcard per entry
1696     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1697     {
1698         pos = filters[i].Find(wxT(';'));
1699         if (pos != wxNOT_FOUND)
1700         {
1701             // first split only filters
1702             descriptions.Insert(descriptions[i],i+1);
1703             filters.Insert(filters[i].Mid(pos+1),i+1);
1704             filters[i]=filters[i].Left(pos);
1705
1706             // autoreplace new filter in description with pattern:
1707             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1708             // cause split into:
1709             //     C/C++ Files(*.cpp)|*.cpp
1710             //     C/C++ Files(*.c;*.h)|*.c;*.h
1711             // and next iteration cause another split into:
1712             //     C/C++ Files(*.cpp)|*.cpp
1713             //     C/C++ Files(*.c)|*.c
1714             //     C/C++ Files(*.h)|*.h
1715             for ( size_t k=i;k<i+2;k++ )
1716             {
1717                 pos = descriptions[k].Find(filters[k]);
1718                 if (pos != wxNOT_FOUND)
1719                 {
1720                     wxString before = descriptions[k].Left(pos);
1721                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1722                     pos = before.Find(_T('('),true);
1723                     if (pos>before.Find(_T(')'),true))
1724                     {
1725                         before = before.Left(pos+1);
1726                         before << filters[k];
1727                         pos = after.Find(_T(')'));
1728                         int pos1 = after.Find(_T('('));
1729                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1730                         {
1731                             before << after.Mid(pos);
1732                             descriptions[k] = before;
1733                         }
1734                     }
1735                 }
1736             }
1737         }
1738     }
1739 #endif
1740
1741     // autocompletion
1742     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1743     {
1744         if ( descriptions[j].empty() && !filters[j].empty() )
1745         {
1746             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1747         }
1748     }
1749
1750     return filters.GetCount();
1751 }
1752
1753
1754 //------------------------------------------------------------------------
1755 // wild character routines
1756 //------------------------------------------------------------------------
1757
1758 bool wxIsWild( const wxString& pattern )
1759 {
1760     wxString tmp = pattern;
1761     wxChar *pat = WXSTRINGCAST(tmp);
1762     while (*pat)
1763     {
1764         switch (*pat++)
1765         {
1766         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1767             return true;
1768         case wxT('\\'):
1769             if (!*pat++)
1770                 return false;
1771         }
1772     }
1773     return false;
1774 }
1775
1776 /*
1777 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1778 *
1779 * The match procedure is public domain code (from ircII's reg.c)
1780 */
1781
1782 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1783 {
1784     if (text.empty())
1785     {
1786         /* Match if both are empty. */
1787         return pat.empty();
1788     }
1789
1790     const wxChar *m = pat.c_str(),
1791     *n = text.c_str(),
1792     *ma = NULL,
1793     *na = NULL,
1794     *mp = NULL,
1795     *np = NULL;
1796     int just = 0,
1797     pcount = 0,
1798     acount = 0,
1799     count = 0;
1800
1801     if (dot_special && (*n == wxT('.')))
1802     {
1803         /* Never match so that hidden Unix files
1804          * are never found. */
1805         return false;
1806     }
1807
1808     for (;;)
1809     {
1810         if (*m == wxT('*'))
1811         {
1812             ma = ++m;
1813             na = n;
1814             just = 1;
1815             mp = NULL;
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                 if (*n == wxT(' '))
1859                     mp = NULL;
1860                 count++;
1861                 n++;
1862             }
1863             else
1864             {
1865
1866                 not_matched:
1867
1868                 /*
1869                 * If there are no more characters in the
1870                 * string, but we still need to find another
1871                 * character (*m != NULL), then it will be
1872                 * impossible to match it
1873                 */
1874                 if (!*n)
1875                     return false;
1876                 if (mp)
1877                 {
1878                     m = mp;
1879                     if (*np == wxT(' '))
1880                     {
1881                         mp = NULL;
1882                         goto check_percent;
1883                     }
1884                     n = ++np;
1885                     count = pcount;
1886                 }
1887                 else
1888                 check_percent:
1889
1890                 if (ma)
1891                 {
1892                     m = ma;
1893                     n = ++na;
1894                     count = acount;
1895                 }
1896                 else
1897                     return false;
1898             }
1899         }
1900     }
1901 }
1902
1903 // Return the type of an open file
1904 //
1905 // Some file types on some platforms seem seekable but in fact are not.
1906 // The main use of this function is to allow such cases to be detected
1907 // (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
1908 //
1909 // This is important for the archive streams, which benefit greatly from
1910 // being able to seek on a stream, but which will produce corrupt archives
1911 // if they unknowingly seek on a non-seekable stream.
1912 //
1913 // wxFILE_KIND_DISK is a good catch all return value, since other values
1914 // disable features of the archive streams. Some other value must be returned
1915 // for a file type that appears seekable but isn't.
1916 //
1917 // Known examples:
1918 //   *  Pipes on Windows
1919 //   *  Files on VMS with a record format other than StreamLF
1920 //
1921 wxFileKind wxGetFileKind(int fd)
1922 {
1923 #if defined __WXMSW__ && !defined __WXWINCE__ && defined wxGetOSFHandle
1924     switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
1925     {
1926         case FILE_TYPE_CHAR:
1927             return wxFILE_KIND_TERMINAL;
1928         case FILE_TYPE_DISK:
1929             return wxFILE_KIND_DISK;
1930         case FILE_TYPE_PIPE:
1931             return wxFILE_KIND_PIPE;
1932     }
1933
1934     return wxFILE_KIND_UNKNOWN;
1935
1936 #elif defined(__UNIX__)
1937     if (isatty(fd))
1938         return wxFILE_KIND_TERMINAL;
1939
1940     struct stat st;
1941     fstat(fd, &st);
1942
1943     if (S_ISFIFO(st.st_mode))
1944         return wxFILE_KIND_PIPE;
1945     if (!S_ISREG(st.st_mode))
1946         return wxFILE_KIND_UNKNOWN;
1947
1948     #if defined(__VMS__)
1949         if (st.st_fab_rfm != FAB$C_STMLF)
1950             return wxFILE_KIND_UNKNOWN;
1951     #endif
1952
1953     return wxFILE_KIND_DISK;
1954
1955 #else
1956     #define wxFILEKIND_STUB
1957     (void)fd;
1958     return wxFILE_KIND_DISK;
1959 #endif
1960 }
1961
1962 wxFileKind wxGetFileKind(FILE *fp)
1963 {
1964     // Note: The watcom rtl dll doesn't have fileno (the static lib does).
1965     //       Should be fixed in version 1.4.
1966 #if defined(wxFILEKIND_STUB) || \
1967         (defined(__WATCOMC__) && __WATCOMC__ <= 1230 && defined(__SW_BR))
1968     (void)fp;
1969     return wxFILE_KIND_DISK;
1970 #else
1971     return wxGetFileKind(fileno(fp));
1972 #endif
1973 }
1974
1975 #ifdef __VISUALC__
1976     #pragma warning(default:4706)   // assignment within conditional expression
1977 #endif // VC++