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 license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "filefn.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26 #include "wx/defs.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #include "wx/utils.h"
  33 #include "wx/intl.h"
  34 #include "wx/file.h"
  35 #include "wx/filename.h"
  36 #include "wx/dir.h"
  37
  38 // there are just too many of those...
  39 #ifdef __VISUALC__
  40     #pragma warning(disable:4706)   // assignment within conditional expression
  41 #endif // VC++
  42
  43 #include <ctype.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #if !defined(__WATCOMC__)
  48     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  49         #include <errno.h>
  50     #endif
  51 #endif
  52
  53 #if defined(__WXMAC__)
  54   #include  "wx/mac/private.h"  // includes mac headers
  55 #endif
  56
  57 #include <time.h>
  58
  59 #ifndef __MWERKS__
  60     #include <sys/types.h>
  61     #include <sys/stat.h>
  62 #else
  63     #include <stat.h>
  64     #include <unistd.h>
  65     #include <unix.h>
  66 #endif
  67
  68 #ifdef __UNIX__
  69     #include <unistd.h>
  70     #include <dirent.h>
  71     #include <fcntl.h>
  72 #endif
  73
  74 #ifdef __WXPM__
  75     #include <process.h>
  76     #include "wx/os2/private.h"
  77 #endif
  78 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
  79 #if !defined( __GNUWIN32__ ) && !defined( __MWERKS__ ) && !defined(__SALFORDC__)
  80     #include <direct.h>
  81     #include <dos.h>
  82     #include <io.h>
  83 #endif // __WINDOWS__
  84 #endif // native Win compiler
  85
  86 #if defined(__DOS__)
  87     #ifdef __WATCOMC__
  88         #include <direct.h>
  89         #include <dos.h>
  90         #include <io.h>
  91     #endif
  92     #ifdef __DJGPP__
  93         #include <unistd.h>
  94     #endif
  95 #endif
  96
  97 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  98                     // this (3.1 I believe) and how to test for it.
  99                     // If this works for Borland 4.0 as well, then no worries.
 100     #include <dir.h>
 101 #endif
 102
 103 #ifdef __SALFORDC__
 104     #include <dir.h>
 105     #include <unix.h>
 106 #endif
 107
 108 #include "wx/log.h"
 109
 110 // No, Cygwin doesn't appear to have fnmatch.h after all.
 111 #if defined(HAVE_FNMATCH_H)
 112     #include "fnmatch.h"
 113 #endif
 114
 115 #ifdef __WINDOWS__
 116     #include <windows.h>
 117     #include "wx/msw/mslu.h"
 118
 119     // sys/cygwin.h is needed for cygwin_conv_to_full_win32_path()
 120     //
 121     // note that it must be included after <windows.h>
 122     #ifdef __GNUWIN32__
 123         #ifdef __CYGWIN__
 124             #include <sys/cygwin.h>
 125         #endif
 126
 127         #ifndef __TWIN32__
 128             #include <sys/unistd.h>
 129         #endif
 130     #endif // __GNUWIN32__
 131 #endif // __WINDOWS__
 132
 133 // TODO: Borland probably has _wgetcwd as well?
 134 #ifdef _MSC_VER
 135     #define HAVE_WGETCWD
 136 #endif
 137
 138 // ----------------------------------------------------------------------------
 139 // constants
 140 // ----------------------------------------------------------------------------
 141
 142 #ifndef _MAXPATHLEN
 143     #define _MAXPATHLEN 1024
 144 #endif
 145
 146 #ifdef __WXMAC__
 147 #  ifdef __DARWIN__
 148 #    include "MoreFilesX.h"
 149 #  else
 150 #    include "MoreFiles.h"
 151 #    include "MoreFilesExtras.h"
 152 #    include "FullPath.h"
 153 #    include "FSpCompat.h"
 154 #  endif
 155 #endif
 156
 157 // ----------------------------------------------------------------------------
 158 // private globals
 159 // ----------------------------------------------------------------------------
 160
 161 // MT-FIXME: get rid of this horror and all code using it
 162 static wxChar wxFileFunctionsBuffer[4*_MAXPATHLEN];
 163
 164 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 165 //
 166 // VisualAge C++ V4.0 cannot have any external linkage const decs
 167 // in headers included by more than one primary source
 168 //
 169 const off_t wxInvalidOffset = (off_t)-1;
 170 #endif
 171
 172 // ----------------------------------------------------------------------------
 173 // macros
 174 // ----------------------------------------------------------------------------
 175
 176 // we need to translate Mac filenames before passing them to OS functions
 177 #define OS_FILENAME(s) (s.fn_str())
 178
 179 // ============================================================================
 180 // implementation
 181 // ============================================================================
 182
 183 #ifdef wxNEED_WX_UNISTD_H
 184
 185 WXDLLEXPORT int wxStat( const wxChar *file_name, wxStructStat *buf )
 186 {
 187     return stat( wxConvFile.cWX2MB( file_name ), buf );
 188 }
 189
 190 WXDLLEXPORT int wxAccess( const wxChar *pathname, int mode )
 191 {
 192     return access( wxConvFile.cWX2MB( pathname ), mode );
 193 }
 194
 195 WXDLLEXPORT int wxOpen( const wxChar *pathname, int flags, mode_t mode )
 196 {
 197     return open( wxConvFile.cWX2MB( pathname ), flags, mode );
 198 }
 199
 200 #endif
 201    // wxNEED_WX_UNISTD_H
 202
 203 // ----------------------------------------------------------------------------
 204 // wxPathList
 205 // ----------------------------------------------------------------------------
 206
 207 IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
 208
 209 void wxPathList::Add (const wxString& path)
 210 {
 211     wxStringList::Add (WXSTRINGCAST path);
 212 }
 213
 214 // Add paths e.g. from the PATH environment variable
 215 void wxPathList::AddEnvList (const wxString& envVariable)
 216 {
 217   static const wxChar PATH_TOKS[] =
 218 #ifdef __WINDOWS__
 219         wxT(" ;"); // Don't seperate with colon in DOS (used for drive)
 220 #else
 221         wxT(" :;");
 222 #endif
 223
 224   wxChar *val = wxGetenv (WXSTRINGCAST envVariable);
 225   if (val && *val)
 226     {
 227       wxChar *s = copystring (val);
 228       wxChar *save_ptr, *token = wxStrtok (s, PATH_TOKS, &save_ptr);
 229
 230       if (token)
 231       {
 232           Add (copystring (token));
 233           while (token)
 234           {
 235               if ((token = wxStrtok ((wxChar *) NULL, PATH_TOKS, &save_ptr)) != NULL)
 236                   Add (wxString(token));
 237           }
 238       }
 239
 240       // suppress warning about unused variable save_ptr when wxStrtok() is a
 241       // macro which throws away its third argument
 242       save_ptr = token;
 243
 244       delete [] s;
 245     }
 246 }
 247
 248 // Given a full filename (with path), ensure that that file can
 249 // be accessed again USING FILENAME ONLY by adding the path
 250 // to the list if not already there.
 251 void wxPathList::EnsureFileAccessible (const wxString& path)
 252 {
 253     wxString path_only(wxPathOnly(path));
 254     if ( !path_only.IsEmpty() )
 255     {
 256         if ( !Member(path_only) )
 257             Add(path_only);
 258     }
 259 }
 260
 261 bool wxPathList::Member (const wxString& path)
 262 {
 263   for (wxStringList::Node *node = GetFirst(); node; node = node->GetNext())
 264   {
 265       wxString path2( node->GetData() );
 266       if (
 267 #if defined(__WINDOWS__) || defined(__VMS__) || defined (__WXMAC__)
 268       // Case INDEPENDENT
 269           path.CompareTo (path2, wxString::ignoreCase) == 0
 270 #else
 271       // Case sensitive File System
 272           path.CompareTo (path2) == 0
 273 #endif
 274         )
 275         return TRUE;
 276   }
 277   return FALSE;
 278 }
 279
 280 wxString wxPathList::FindValidPath (const wxString& file)
 281 {
 282   if (wxFileExists (wxExpandPath(wxFileFunctionsBuffer, file)))
 283     return wxString(wxFileFunctionsBuffer);
 284
 285   wxChar buf[_MAXPATHLEN];
 286   wxStrcpy(buf, wxFileFunctionsBuffer);
 287
 288   wxChar *filename = (wxChar*) NULL; /* shut up buggy egcs warning */
 289   filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 290
 291   for (wxStringList::Node *node = GetFirst(); node; node = node->GetNext())
 292     {
 293       wxChar *path = node->GetData();
 294       wxStrcpy (wxFileFunctionsBuffer, path);
 295       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 296       if (ch != wxT('\\') && ch != wxT('/'))
 297         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 298       wxStrcat (wxFileFunctionsBuffer, filename);
 299 #ifdef __WINDOWS__
 300       wxUnix2DosFilename (wxFileFunctionsBuffer);
 301 #endif
 302       if (wxFileExists (wxFileFunctionsBuffer))
 303       {
 304         return wxString(wxFileFunctionsBuffer);        // Found!
 305       }
 306     }                                // for()
 307
 308   return wxEmptyString;                    // Not found
 309 }
 310
 311 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 312 {
 313     wxString f = FindValidPath(file);
 314     if ( wxIsAbsolutePath(f) )
 315         return f;
 316
 317     wxString buf;
 318     wxGetWorkingDirectory(wxStringBuffer(buf, _MAXPATHLEN), _MAXPATHLEN);
 319
 320     if ( !wxEndsWithPathSeparator(buf) )
 321     {
 322         buf += wxFILE_SEP_PATH;
 323     }
 324     buf += f;
 325
 326     return buf;
 327 }
 328
 329 bool
 330 wxFileExists (const wxString& filename)
 331 {
 332     // we must use GetFileAttributes() instead of the ANSI C functions because
 333     // it can cope with network (UNC) paths unlike them
 334 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 335     DWORD ret = ::GetFileAttributes(filename);
 336
 337     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 338 #else // !__WIN32__
 339     wxStructStat st;
 340     return wxStat(filename, &st) == 0 && (st.st_mode & S_IFREG);
 341 #endif // __WIN32__/!__WIN32__
 342 }
 343
 344 bool
 345 wxIsAbsolutePath (const wxString& filename)
 346 {
 347     if (filename != wxT(""))
 348     {
 349 #if defined(__WXMAC__) && !defined(__DARWIN__)
 350         // Classic or Carbon CodeWarrior like
 351         // Carbon with Apple DevTools is Unix like
 352
 353         // This seems wrong to me, but there is no fix. since
 354         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 355         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 356         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 357             return TRUE ;
 358 #else
 359         // Unix like or Windows
 360         if (filename[0] == wxT('/'))
 361             return TRUE;
 362 #endif
 363 #ifdef __VMS__
 364         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 365             return TRUE;
 366 #endif
 367 #ifdef __WINDOWS__
 368         // MSDOS like
 369         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 370             return TRUE;
 371 #endif
 372     }
 373     return FALSE ;
 374 }
 375
 376 /*
 377  * Strip off any extension (dot something) from end of file,
 378  * IF one exists. Inserts zero into buffer.
 379  *
 380  */
 381
 382 void wxStripExtension(wxChar *buffer)
 383 {
 384   int len = wxStrlen(buffer);
 385   int i = len-1;
 386   while (i > 0)
 387   {
 388     if (buffer[i] == wxT('.'))
 389     {
 390       buffer[i] = 0;
 391       break;
 392     }
 393     i --;
 394   }
 395 }
 396
 397 void wxStripExtension(wxString& buffer)
 398 {
 399   size_t len = buffer.Length();
 400   size_t i = len-1;
 401   while (i > 0)
 402   {
 403     if (buffer.GetChar(i) == wxT('.'))
 404     {
 405       buffer = buffer.Left(i);
 406       break;
 407     }
 408     i --;
 409   }
 410 }
 411
 412 // Destructive removal of /./ and /../ stuff
 413 wxChar *wxRealPath (wxChar *path)
 414 {
 415 #ifdef __WXMSW__
 416   static const wxChar SEP = wxT('\\');
 417   wxUnix2DosFilename(path);
 418 #else
 419   static const wxChar SEP = wxT('/');
 420 #endif
 421   if (path[0] && path[1]) {
 422     /* MATTHEW: special case "/./x" */
 423     wxChar *p;
 424     if (path[2] == SEP && path[1] == wxT('.'))
 425       p = &path[0];
 426     else
 427       p = &path[2];
 428     for (; *p; p++)
 429       {
 430         if (*p == SEP)
 431           {
 432             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 433               {
 434                 wxChar *q;
 435                 for (q = p - 1; q >= path && *q != SEP; q--)
 436                 {
 437                     // Empty
 438                 }
 439
 440                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 441                     && (q - 1 <= path || q[-1] != SEP))
 442                   {
 443                     wxStrcpy (q, p + 3);
 444                     if (path[0] == wxT('\0'))
 445                       {
 446                         path[0] = SEP;
 447                         path[1] = wxT('\0');
 448                       }
 449 #ifdef __WXMSW__
 450                     /* Check that path[2] is NULL! */
 451                     else if (path[1] == wxT(':') && !path[2])
 452                       {
 453                         path[2] = SEP;
 454                         path[3] = wxT('\0');
 455                       }
 456 #endif
 457                     p = q - 1;
 458                   }
 459               }
 460             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 461               wxStrcpy (p, p + 2);
 462           }
 463       }
 464   }
 465   return path;
 466 }
 467
 468 // Must be destroyed
 469 wxChar *wxCopyAbsolutePath(const wxString& filename)
 470 {
 471   if (filename == wxT(""))
 472     return (wxChar *) NULL;
 473
 474   if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename))) {
 475     wxChar  buf[_MAXPATHLEN];
 476     buf[0] = wxT('\0');
 477     wxGetWorkingDirectory(buf, WXSIZEOF(buf));
 478     wxChar ch = buf[wxStrlen(buf) - 1];
 479 #ifdef __WXMSW__
 480     if (ch != wxT('\\') && ch != wxT('/'))
 481         wxStrcat(buf, wxT("\\"));
 482 #else
 483     if (ch != wxT('/'))
 484         wxStrcat(buf, wxT("/"));
 485 #endif
 486     wxStrcat(buf, wxFileFunctionsBuffer);
 487     return copystring( wxRealPath(buf) );
 488   }
 489   return copystring( wxFileFunctionsBuffer );
 490 }
 491
 492 /*-
 493  Handles:
 494    ~/ => home dir
 495    ~user/ => user's home dir
 496    If the environment variable a = "foo" and b = "bar" then:
 497    Unix:
 498         $a        =>        foo
 499         $a$b        =>        foobar
 500         $a.c        =>        foo.c
 501         xxx$a        =>        xxxfoo
 502         ${a}!        =>        foo!
 503         $(b)!        =>        bar!
 504         \$a        =>        \$a
 505    MSDOS:
 506         $a        ==>        $a
 507         $(a)        ==>        foo
 508         $(a)$b        ==>        foo$b
 509         $(a)$(b)==>        foobar
 510         test.$$        ==>        test.$$
 511  */
 512
 513 /* input name in name, pathname output to buf. */
 514
 515 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 516 {
 517     register wxChar *d, *s, *nm;
 518     wxChar          lnm[_MAXPATHLEN];
 519     int             q;
 520
 521     // Some compilers don't like this line.
 522 //    const wxChar    trimchars[] = wxT("\n \t");
 523
 524     wxChar      trimchars[4];
 525     trimchars[0] = wxT('\n');
 526     trimchars[1] = wxT(' ');
 527     trimchars[2] = wxT('\t');
 528     trimchars[3] = 0;
 529
 530 #ifdef __WXMSW__
 531      const wxChar     SEP = wxT('\\');
 532 #else
 533      const wxChar     SEP = wxT('/');
 534 #endif
 535     buf[0] = wxT('\0');
 536     if (name == NULL || *name == wxT('\0'))
 537         return buf;
 538     nm = copystring(name); // Make a scratch copy
 539     wxChar *nm_tmp = nm;
 540
 541     /* Skip leading whitespace and cr */
 542     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 543         nm++;
 544     /* And strip off trailing whitespace and cr */
 545     s = nm + (q = wxStrlen(nm)) - 1;
 546     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 547         *s = wxT('\0');
 548
 549     s = nm;
 550     d = lnm;
 551 #ifdef __WXMSW__
 552     q = FALSE;
 553 #else
 554     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 555 #endif
 556
 557     /* Expand inline environment variables */
 558 #ifdef __VISAGECPP__
 559     while (*d)
 560     {
 561       *d++ = *s;
 562       if(*s == wxT('\\'))
 563       {
 564         *(d - 1) = *++s;
 565         if (*d)
 566         {
 567           s++;
 568           continue;
 569         }
 570         else
 571            break;
 572       }
 573       else
 574 #else
 575     while ((*d++ = *s) != 0) {
 576 #  ifndef __WXMSW__
 577         if (*s == wxT('\\')) {
 578             if ((*(d - 1) = *++s)) {
 579                 s++;
 580                 continue;
 581             } else
 582                 break;
 583         } else
 584 #  endif
 585 #endif
 586 #ifdef __WXMSW__
 587         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 588 #else
 589         if (*s++ == wxT('$'))
 590 #endif
 591         {
 592             register wxChar  *start = d;
 593             register int     braces = (*s == wxT('{') || *s == wxT('('));
 594             register wxChar  *value;
 595             while ((*d++ = *s) != 0)
 596                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 597                     break;
 598                 else
 599                     s++;
 600             *--d = 0;
 601             value = wxGetenv(braces ? start + 1 : start);
 602             if (value) {
 603                 for ((d = start - 1); (*d++ = *value++) != 0;)
 604                 {
 605                     // Empty
 606                 }
 607
 608                 d--;
 609                 if (braces && *s)
 610                     s++;
 611             }
 612         }
 613     }
 614
 615     /* Expand ~ and ~user */
 616     nm = lnm;
 617     if (nm[0] == wxT('~') && !q)
 618     {
 619         /* prefix ~ */
 620         if (nm[1] == SEP || nm[1] == 0)
 621         {        /* ~/filename */
 622         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 623             if ((s = WXSTRINGCAST wxGetUserHome(wxT(""))) != NULL) {
 624                 if (*++nm)
 625                     nm++;
 626             }
 627         } else
 628         {                /* ~user/filename */
 629             register wxChar  *nnm;
 630             register wxChar  *home;
 631             for (s = nm; *s && *s != SEP; s++)
 632             {
 633                 // Empty
 634             }
 635             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 636             was_sep = (*s == SEP);
 637             nnm = *s ? s + 1 : s;
 638             *s = 0;
 639         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 640             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL) {
 641                if (was_sep) /* replace only if it was there: */
 642                    *s = SEP;
 643                 s = NULL;
 644             } else {
 645                 nm = nnm;
 646                 s = home;
 647             }
 648         }
 649     }
 650
 651     d = buf;
 652     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 653         /* Copy home dir */
 654         while (wxT('\0') != (*d++ = *s++))
 655           /* loop */;
 656         // Handle root home
 657         if (d - 1 > buf && *(d - 2) != SEP)
 658           *(d - 1) = SEP;
 659     }
 660     s = nm;
 661     while ((*d++ = *s++) != 0)
 662     {
 663         // Empty
 664     }
 665     delete[] nm_tmp; // clean up alloc
 666     /* Now clean up the buffer */
 667     return wxRealPath(buf);
 668 }
 669
 670 /* Contract Paths to be build upon an environment variable
 671    component:
 672
 673    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 674
 675    The call wxExpandPath can convert these back!
 676  */
 677 wxChar *
 678 wxContractPath (const wxString& filename, const wxString& envname, const wxString& user)
 679 {
 680   static wxChar dest[_MAXPATHLEN];
 681
 682   if (filename == wxT(""))
 683     return (wxChar *) NULL;
 684
 685   wxStrcpy (dest, WXSTRINGCAST filename);
 686 #ifdef __WXMSW__
 687   wxUnix2DosFilename(dest);
 688 #endif
 689
 690   // Handle environment
 691   const wxChar *val = (const wxChar *) NULL;
 692   wxChar *tcp = (wxChar *) NULL;
 693   if (envname != WXSTRINGCAST NULL && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 694      (tcp = wxStrstr (dest, val)) != NULL)
 695     {
 696         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 697         *tcp++ = wxT('$');
 698         *tcp++ = wxT('{');
 699         wxStrcpy (tcp, WXSTRINGCAST envname);
 700         wxStrcat (tcp, wxT("}"));
 701         wxStrcat (tcp, wxFileFunctionsBuffer);
 702     }
 703
 704   // Handle User's home (ignore root homes!)
 705   size_t len = 0;
 706   if ((val = wxGetUserHome (user)) != NULL &&
 707       (len = wxStrlen(val)) > 2 &&
 708       wxStrncmp(dest, val, len) == 0)
 709     {
 710       wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 711       if (user != wxT(""))
 712              wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 713       wxStrcat(wxFileFunctionsBuffer, dest + len);
 714       wxStrcpy (dest, wxFileFunctionsBuffer);
 715     }
 716
 717   return dest;
 718 }
 719
 720 // Return just the filename, not the path (basename)
 721 wxChar *wxFileNameFromPath (wxChar *path)
 722 {
 723     wxString p = path;
 724     wxString n = wxFileNameFromPath(p);
 725
 726     return path + p.length() - n.length();
 727 }
 728
 729 wxString wxFileNameFromPath (const wxString& path)
 730 {
 731     wxString name, ext;
 732     wxFileName::SplitPath(path, NULL, &name, &ext);
 733
 734     wxString fullname = name;
 735     if ( !ext.empty() )
 736     {
 737         fullname << wxFILE_SEP_EXT << ext;
 738     }
 739
 740     return fullname;
 741 }
 742
 743 // Return just the directory, or NULL if no directory
 744 wxChar *
 745 wxPathOnly (wxChar *path)
 746 {
 747     if (path && *path)
 748     {
 749         static wxChar buf[_MAXPATHLEN];
 750
 751         // Local copy
 752         wxStrcpy (buf, path);
 753
 754         int l = wxStrlen(path);
 755         int i = l - 1;
 756
 757         // Search backward for a backward or forward slash
 758         while (i > -1)
 759         {
 760 #if defined(__WXMAC__) && !defined(__DARWIN__)
 761             // Classic or Carbon CodeWarrior like
 762             // Carbon with Apple DevTools is Unix like
 763             if (path[i] == wxT(':') )
 764             {
 765                 buf[i] = 0;
 766                 return buf;
 767             }
 768 #else
 769             // Unix like or Windows
 770             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 771             {
 772                 buf[i] = 0;
 773                 return buf;
 774             }
 775 #endif
 776 #ifdef __VMS__
 777             if (path[i] == wxT(']'))
 778             {
 779                 buf[i+1] = 0;
 780                 return buf;
 781             }
 782 #endif
 783             i --;
 784         }
 785
 786 #if defined(__WXMSW__) || defined(__WXPM__)
 787         // Try Drive specifier
 788         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 789         {
 790             // A:junk --> A:. (since A:.\junk Not A:\junk)
 791             buf[2] = wxT('.');
 792             buf[3] = wxT('\0');
 793             return buf;
 794         }
 795 #endif
 796     }
 797     return (wxChar *) NULL;
 798 }
 799
 800 // Return just the directory, or NULL if no directory
 801 wxString wxPathOnly (const wxString& path)
 802 {
 803     if (path != wxT(""))
 804     {
 805         wxChar buf[_MAXPATHLEN];
 806
 807         // Local copy
 808         wxStrcpy (buf, WXSTRINGCAST path);
 809
 810         int l = path.Length();
 811         int i = l - 1;
 812
 813         // Search backward for a backward or forward slash
 814         while (i > -1)
 815         {
 816 #if defined(__WXMAC__) && !defined(__DARWIN__)
 817             // Classic or Carbon CodeWarrior like
 818             // Carbon with Apple DevTools is Unix like
 819             if (path[i] == wxT(':') )
 820             {
 821                 buf[i] = 0;
 822                 return wxString(buf);
 823             }
 824 #else
 825             // Unix like or Windows
 826             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 827             {
 828                 buf[i] = 0;
 829                 return wxString(buf);
 830             }
 831 #endif
 832 #ifdef __VMS__
 833             if (path[i] == wxT(']'))
 834             {
 835                 buf[i+1] = 0;
 836                 return wxString(buf);
 837             }
 838 #endif
 839             i --;
 840         }
 841
 842 #if defined(__WXMSW__) || defined(__WXPM__)
 843         // Try Drive specifier
 844         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 845         {
 846             // A:junk --> A:. (since A:.\junk Not A:\junk)
 847             buf[2] = wxT('.');
 848             buf[3] = wxT('\0');
 849             return wxString(buf);
 850         }
 851 #endif
 852     }
 853     return wxString(wxT(""));
 854 }
 855
 856 // Utility for converting delimiters in DOS filenames to UNIX style
 857 // and back again - or we get nasty problems with delimiters.
 858 // Also, convert to lower case, since case is significant in UNIX.
 859
 860 #if defined(__WXMAC__)
 861 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 862 {
 863 #ifdef __DARWIN__
 864     int         i;
 865     int         j;
 866     OSErr       theErr;
 867     OSStatus    theStatus;
 868     Boolean     isDirectory = FALSE;
 869     Str255    theParentPath = "\p";
 870     FSSpec      theParentSpec;
 871     FSRef       theParentRef;
 872     char        theFileName[FILENAME_MAX];
 873     char        thePath[FILENAME_MAX];
 874
 875     strcpy(thePath, "");
 876
 877     // GD: Separate file name from path and make a FSRef to the parent
 878     //     directory. This is necessary since FSRefs cannot reference files
 879     //     that have not yet been created.
 880     //     Based on example code from Apple Technical Note TN2022
 881     //       http://developer.apple.com/technotes/tn/tn2022.html
 882
 883     // check whether we are converting a directory
 884     isDirectory = ((spec->name)[spec->name[0]] == ':');
 885     // count length of file name
 886     for (i = spec->name[0] - (isDirectory ? 1 : 0); ((spec->name[i] != ':') && (i > 0)); i--);
 887     // copy file name
 888     //   prepend path separator since it will later be appended to the path
 889     theFileName[0] = wxFILE_SEP_PATH;
 890     for (j = i + 1; j <= spec->name[0] - (isDirectory ? 1 : 0); j++) {
 891         theFileName[j - i] = spec->name[j];
 892     }
 893     theFileName[j - i] = '\0';
 894     // copy path if any
 895     for (j = 1; j <= i; j++) {
 896         theParentPath[++theParentPath[0]] = spec->name[j];
 897     }
 898     theErr = FSMakeFSSpec(spec->vRefNum, spec->parID, theParentPath, &theParentSpec);
 899     if (theErr == noErr) {
 900         // convert the FSSpec to an FSRef
 901         theErr = FSpMakeFSRef(&theParentSpec, &theParentRef);
 902     }
 903     if (theErr == noErr) {
 904         // get the POSIX path associated with the FSRef
 905         theStatus = FSRefMakePath(&theParentRef,
 906                                   (UInt8 *)thePath, sizeof(thePath));
 907     }
 908     if (theStatus == noErr) {
 909         // append file name to path
 910         //   includes previously prepended path separator
 911         strcat(thePath, theFileName);
 912     }
 913
 914     // create path string for return value
 915     wxString result( thePath ) ;
 916 #else
 917     Handle    myPath ;
 918     short     length ;
 919
 920     // get length of path and allocate handle
 921     FSpGetFullPath( spec , &length , &myPath ) ;
 922     ::SetHandleSize( myPath , length + 1 ) ;
 923     ::HLock( myPath ) ;
 924     (*myPath)[length] = 0 ;
 925     if ((length > 0) && ((*myPath)[length-1] == ':'))
 926         (*myPath)[length-1] = 0 ;
 927
 928     // create path string for return value
 929     wxString result( (char*) *myPath ) ;
 930
 931     // free allocated handle
 932     ::HUnlock( myPath ) ;
 933     ::DisposeHandle( myPath ) ;
 934 #endif
 935
 936     return result ;
 937 }
 938 #ifndef __DARWIN__
 939 // Mac file names are POSIX (Unix style) under Darwin
 940 // therefore the conversion functions below are not needed
 941
 942 static char sMacFileNameConversion[ 1000 ] ;
 943
 944 #endif
 945 void wxMacFilename2FSSpec( const char *path , FSSpec *spec )
 946 {
 947     OSStatus err = noErr ;
 948 #ifdef __DARWIN__
 949     FSRef theRef;
 950
 951     // get the FSRef associated with the POSIX path
 952     err = FSPathMakeRef((const UInt8 *) path, &theRef, NULL);
 953     // convert the FSRef to an FSSpec
 954     err = FSGetCatalogInfo(&theRef, kFSCatInfoNone, NULL, NULL, spec, NULL);
 955 #else
 956     if ( strchr( path , ':' ) == NULL )
 957     {
 958         // try whether it is a volume / or a mounted volume
 959         strncpy( sMacFileNameConversion , path , 1000 ) ;
 960         sMacFileNameConversion[998] = 0 ;
 961         strcat( sMacFileNameConversion , ":" ) ;
 962         err = FSpLocationFromFullPath( strlen(sMacFileNameConversion) , sMacFileNameConversion , spec ) ;
 963     }
 964     else
 965     {
 966         err = FSpLocationFromFullPath( strlen(path) , path , spec ) ;
 967     }
 968 #endif
 969 }
 970
 971 #ifndef __DARWIN__
 972
 973 wxString wxMac2UnixFilename (const char *str)
 974 {
 975     char *s = sMacFileNameConversion ;
 976     strcpy( s , str ) ;
 977     if (s)
 978     {
 979         memmove( s+1 , s ,strlen( s ) + 1) ;
 980         if ( *s == ':' )
 981             *s = '.' ;
 982         else
 983             *s = '/' ;
 984
 985         while (*s)
 986         {
 987             if (*s == ':')
 988                 *s = '/';
 989             else
 990                 *s = wxTolower(*s);        // Case INDEPENDENT
 991             s++;
 992         }
 993     }
 994     return wxString(sMacFileNameConversion) ;
 995 }
 996
 997 wxString wxUnix2MacFilename (const char *str)
 998 {
 999     char *s = sMacFileNameConversion ;
1000     strcpy( s , str ) ;
1001     if (s)
1002     {
1003         if ( *s == '.' )
1004         {
1005             // relative path , since it goes on with slash which is translated to a :
1006             memmove( s , s+1 ,strlen( s ) ) ;
1007         }
1008         else if ( *s == '/' )
1009         {
1010             // absolute path -> on mac just start with the drive name
1011             memmove( s , s+1 ,strlen( s ) ) ;
1012         }
1013         else
1014         {
1015             wxASSERT_MSG( 1 , "unkown path beginning" ) ;
1016         }
1017         while (*s)
1018         {
1019             if (*s == '/' || *s == '\\')
1020             {
1021                 // convert any back-directory situations
1022                 if ( *(s+1) == '.' && *(s+2) == '.' && ( (*(s+3) == '/' || *(s+3) == '\\') ) )
1023                 {
1024                     *s = ':';
1025                     memmove( s+1 , s+3 ,strlen( s+3 ) + 1 ) ;
1026                 }
1027                 else
1028                     *s = ':';
1029             }
1030             s++ ;
1031         }
1032     }
1033     return wxString (sMacFileNameConversion) ;
1034 }
1035
1036 wxString wxMacFSSpec2UnixFilename( const FSSpec *spec )
1037 {
1038     return wxMac2UnixFilename( wxMacFSSpec2MacFilename( spec) ) ;
1039 }
1040
1041 void wxUnixFilename2FSSpec( const char *path , FSSpec *spec )
1042 {
1043     wxString var = wxUnix2MacFilename( path ) ;
1044     wxMacFilename2FSSpec( var , spec ) ;
1045 }
1046 #endif // ! __DARWIN__
1047
1048 #endif // __WXMAC__
1049
1050 void
1051 wxDos2UnixFilename (char *s)
1052 {
1053   if (s)
1054     while (*s)
1055       {
1056         if (*s == '\\')
1057           *s = '/';
1058 #ifdef __WXMSW__
1059         else
1060           *s = wxTolower (*s);        // Case INDEPENDENT
1061 #endif
1062         s++;
1063       }
1064 }
1065
1066 void
1067 #if defined(__WXMSW__) || defined(__WXPM__)
1068 wxUnix2DosFilename (wxChar *s)
1069 #else
1070 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
1071 #endif
1072 {
1073 // Yes, I really mean this to happen under DOS only! JACS
1074 #if defined(__WXMSW__) || defined(__WXPM__)
1075   if (s)
1076     while (*s)
1077       {
1078         if (*s == wxT('/'))
1079           *s = wxT('\\');
1080         s++;
1081       }
1082 #endif
1083 }
1084
1085 // Concatenate two files to form third
1086 bool
1087 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
1088 {
1089   wxString outfile;
1090   if ( !wxGetTempFileName( wxT("cat"), outfile) )
1091       return FALSE;
1092
1093   FILE *fp1 = (FILE *) NULL;
1094   FILE *fp2 = (FILE *) NULL;
1095   FILE *fp3 = (FILE *) NULL;
1096   // Open the inputs and outputs
1097   if ((fp1 = wxFopen ( file1, wxT("rb"))) == NULL ||
1098       (fp2 = wxFopen ( file2, wxT("rb"))) == NULL ||
1099       (fp3 = wxFopen ( outfile, wxT("wb"))) == NULL)
1100     {
1101       if (fp1)
1102         fclose (fp1);
1103       if (fp2)
1104         fclose (fp2);
1105       if (fp3)
1106         fclose (fp3);
1107       return FALSE;
1108     }
1109
1110   int ch;
1111   while ((ch = getc (fp1)) != EOF)
1112     (void) putc (ch, fp3);
1113   fclose (fp1);
1114
1115   while ((ch = getc (fp2)) != EOF)
1116     (void) putc (ch, fp3);
1117   fclose (fp2);
1118
1119   fclose (fp3);
1120   bool result = wxRenameFile(outfile, file3);
1121   return result;
1122 }
1123
1124 // Copy files
1125 bool
1126 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
1127 {
1128 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1129     // CopyFile() copies file attributes and modification time too, so use it
1130     // instead of our code if available
1131     //
1132     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1133     if ( !::CopyFile(file1, file2, !overwrite) )
1134     {
1135         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1136                       file1.c_str(), file2.c_str());
1137
1138         return FALSE;
1139     }
1140 #elif defined(__WXPM__)
1141     if ( ::DosCopy(file2, file2, overwrite ? DCPY_EXISTING : 0) != 0 )
1142         return FALSE;
1143 #else // !Win32
1144
1145     wxStructStat fbuf;
1146     // get permissions of file1
1147     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1148     {
1149         // the file probably doesn't exist or we haven't the rights to read
1150         // from it anyhow
1151         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1152                       file1.c_str());
1153         return FALSE;
1154     }
1155
1156     // open file1 for reading
1157     wxFile fileIn(file1, wxFile::read);
1158     if ( !fileIn.IsOpened() )
1159         return FALSE;
1160
1161     // remove file2, if it exists. This is needed for creating
1162     // file2 with the correct permissions in the next step
1163     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1164     {
1165         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1166                       file2.c_str());
1167         return FALSE;
1168     }
1169
1170 #ifdef __UNIX__
1171     // reset the umask as we want to create the file with exactly the same
1172     // permissions as the original one
1173     mode_t oldUmask = umask( 0 );
1174 #endif // __UNIX__
1175
1176     // create file2 with the same permissions than file1 and open it for
1177     // writing
1178
1179     wxFile fileOut;
1180     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1181         return FALSE;
1182
1183 #ifdef __UNIX__
1184     /// restore the old umask
1185     umask(oldUmask);
1186 #endif // __UNIX__
1187
1188     // copy contents of file1 to file2
1189     char buf[4096];
1190     size_t count;
1191     for ( ;; )
1192     {
1193         count = fileIn.Read(buf, WXSIZEOF(buf));
1194         if ( fileIn.Error() )
1195             return FALSE;
1196
1197         // end of file?
1198         if ( !count )
1199             break;
1200
1201         if ( fileOut.Write(buf, count) < count )
1202             return FALSE;
1203     }
1204
1205     // we can expect fileIn to be closed successfully, but we should ensure
1206     // that fileOut was closed as some write errors (disk full) might not be
1207     // detected before doing this
1208     if ( !fileIn.Close() || !fileOut.Close() )
1209         return FALSE;
1210
1211 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1212     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1213     // however
1214     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1215     {
1216         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1217                       file2.c_str());
1218         return FALSE;
1219     }
1220 #endif // OS/2 || Mac
1221 #endif // __WXMSW__ && __WIN32__
1222
1223     return TRUE;
1224 }
1225
1226 bool
1227 wxRenameFile (const wxString& file1, const wxString& file2)
1228 {
1229   // Normal system call
1230   if ( wxRename (file1, file2) == 0 )
1231     return TRUE;
1232
1233   // Try to copy
1234   if (wxCopyFile(file1, file2)) {
1235     wxRemoveFile(file1);
1236     return TRUE;
1237   }
1238   // Give up
1239   return FALSE;
1240 }
1241
1242 bool wxRemoveFile(const wxString& file)
1243 {
1244 #if defined(__VISUALC__) \
1245  || defined(__BORLANDC__) \
1246  || defined(__WATCOMC__) \
1247  || defined(__GNUWIN32__)
1248   int res = wxRemove(file);
1249 #else
1250   int res = unlink(OS_FILENAME(file));
1251 #endif
1252
1253   return res == 0;
1254 }
1255
1256 bool wxMkdir(const wxString& dir, int perm)
1257 {
1258 #if defined(__WXMAC__) && !defined(__UNIX__)
1259   return (mkdir( dir , 0 ) == 0);
1260 #else // !Mac
1261     const wxChar *dirname = dir.c_str();
1262
1263     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1264     // for the GNU compiler
1265 #if (!(defined(__WXMSW__) || defined(__WXPM__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1266   #ifndef MSVCRT
1267     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1268   #else
1269     if ( mkdir(wxFNCONV(dirname)) != 0 )
1270   #endif
1271 #elif defined(__WXPM__)
1272     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1273 #elif defined(__DOS__)
1274   #if defined(__WATCOMC__)
1275     (void)perm;
1276     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1277   #elif defined(__DJGPP__)
1278     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1279   #else
1280     #error "Unsupported DOS compiler!"
1281   #endif
1282 #else  // !MSW, !DOS and !OS/2 VAC++
1283     (void)perm;
1284     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1285 #endif // !MSW/MSW
1286     {
1287         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1288
1289         return FALSE;
1290     }
1291
1292     return TRUE;
1293 #endif // Mac/!Mac
1294 }
1295
1296 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1297 {
1298 #ifdef __VMS__
1299   return FALSE; //to be changed since rmdir exists in VMS7.x
1300 #elif defined(__WXPM__)
1301   return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1302 #else
1303
1304 #ifdef __SALFORDC__
1305   return FALSE; // What to do?
1306 #else
1307   return (wxRmDir(OS_FILENAME(dir)) == 0);
1308 #endif
1309
1310 #endif
1311 }
1312
1313 // does the path exists? (may have or not '/' or '\\' at the end)
1314 bool wxPathExists(const wxChar *pszPathName)
1315 {
1316     wxString strPath(pszPathName);
1317
1318 #ifdef __WINDOWS__
1319     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1320     // so remove all trailing backslashes from the path - but don't do this for
1321     // the pathes "d:\" (which are different from "d:") nor for just "\"
1322     while ( wxEndsWithPathSeparator(strPath) )
1323     {
1324         size_t len = strPath.length();
1325         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1326             break;
1327
1328         strPath.Truncate(len - 1);
1329     }
1330 #endif // __WINDOWS__
1331
1332 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
1333     // stat() can't cope with network paths
1334     DWORD ret = ::GetFileAttributes(strPath);
1335
1336     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1337 #else // !__WIN32__
1338
1339     wxStructStat st;
1340 #ifndef __VISAGECPP__
1341     return wxStat(pszPathName, &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1342 #else
1343     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1344     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1345 #endif
1346
1347 #endif // __WIN32__/!__WIN32__
1348 }
1349
1350 // Get a temporary filename, opening and closing the file.
1351 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1352 {
1353     wxString filename = wxFileName::CreateTempFileName(prefix);
1354     if ( filename.empty() )
1355         return NULL;
1356
1357     if ( buf )
1358         wxStrcpy(buf, filename);
1359     else
1360         buf = copystring(filename);
1361
1362     return buf;
1363 }
1364
1365 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1366 {
1367     buf = wxFileName::CreateTempFileName(prefix);
1368
1369     return !buf.empty();
1370 }
1371
1372 // Get first file name matching given wild card.
1373
1374 static wxDir *gs_dir = NULL;
1375 static wxString gs_dirPath;
1376
1377 wxString wxFindFirstFile(const wxChar *spec, int flags)
1378 {
1379     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1380     if ( gs_dirPath.IsEmpty() )
1381         gs_dirPath = wxT(".");
1382     if ( gs_dirPath.Last() != wxFILE_SEP_PATH )
1383         gs_dirPath << wxFILE_SEP_PATH;
1384
1385     if (gs_dir)
1386         delete gs_dir;
1387     gs_dir = new wxDir(gs_dirPath);
1388
1389     if ( !gs_dir->IsOpened() )
1390     {
1391         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1392         return wxEmptyString;
1393     }
1394
1395     int dirFlags = 0;
1396     switch (flags)
1397     {
1398         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1399         case wxFILE: dirFlags = wxDIR_FILES; break;
1400         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1401     }
1402
1403     wxString result;
1404     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1405     if ( result.IsEmpty() )
1406     {
1407         wxDELETE(gs_dir);
1408         return result;
1409     }
1410
1411     return gs_dirPath + result;
1412 }
1413
1414 wxString wxFindNextFile()
1415 {
1416     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1417
1418     wxString result;
1419     gs_dir->GetNext(&result);
1420
1421     if ( result.IsEmpty() )
1422     {
1423         wxDELETE(gs_dir);
1424         return result;
1425     }
1426
1427     return gs_dirPath + result;
1428 }
1429
1430
1431 // Get current working directory.
1432 // If buf is NULL, allocates space using new, else
1433 // copies into buf.
1434 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1435 {
1436     if ( !buf )
1437     {
1438         buf = new wxChar[sz + 1];
1439     }
1440
1441     bool ok = FALSE;
1442
1443     // for the compilers which have Unicode version of _getcwd(), call it
1444     // directly, for the others call the ANSI version and do the translation
1445 #if !wxUSE_UNICODE
1446     #define cbuf buf
1447 #else // wxUSE_UNICODE
1448     bool needsANSI = TRUE;
1449
1450     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1451         // This is not legal code as the compiler
1452         // is allowed destroy the wxCharBuffer.
1453         // wxCharBuffer c_buffer(sz);
1454         // char *cbuf = (char*)(const char*)c_buffer;
1455         char cbuf[_MAXPATHLEN];
1456     #endif
1457
1458     #ifdef HAVE_WGETCWD
1459         #if wxUSE_UNICODE_MSLU
1460             if ( wxGetOsVersion() != wxWIN95 )
1461         #else
1462             char *cbuf = NULL; // never really used because needsANSI will always be FALSE
1463         #endif
1464             {
1465                 ok = _wgetcwd(buf, sz) != NULL;
1466                 needsANSI = FALSE;
1467             }
1468     #endif
1469
1470     if ( needsANSI )
1471 #endif // wxUSE_UNICODE
1472     {
1473     #ifdef _MSC_VER
1474         ok = _getcwd(cbuf, sz) != NULL;
1475     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1476         FSSpec cwdSpec ;
1477         FCBPBRec pb;
1478         OSErr error;
1479         Str255  fileName ;
1480         pb.ioNamePtr = (StringPtr) &fileName;
1481         pb.ioVRefNum = 0;
1482         pb.ioRefNum = LMGetCurApRefNum();
1483         pb.ioFCBIndx = 0;
1484         error = PBGetFCBInfoSync(&pb);
1485         if ( error == noErr )
1486         {
1487             cwdSpec.vRefNum = pb.ioFCBVRefNum;
1488             cwdSpec.parID = pb.ioFCBParID;
1489             cwdSpec.name[0] = 0 ;
1490             wxString res = wxMacFSSpec2MacFilename( &cwdSpec ) ;
1491
1492             strcpy( cbuf , res ) ;
1493             cbuf[res.length()]=0 ;
1494
1495             ok = TRUE;
1496         }
1497         else
1498         {
1499             ok = FALSE;
1500         }
1501     #elif defined(__VISAGECPP__) || (defined (__OS2__) && defined (__WATCOMC__))
1502         APIRET rc;
1503         rc = ::DosQueryCurrentDir( 0 // current drive
1504                                   ,cbuf
1505                                   ,(PULONG)&sz
1506                                  );
1507         ok = rc != 0;
1508     #else // !Win32/VC++ !Mac !OS2
1509         ok = getcwd(cbuf, sz) != NULL;
1510     #endif // platform
1511
1512     #if wxUSE_UNICODE
1513         // finally convert the result to Unicode if needed
1514         wxConvFile.MB2WC(buf, cbuf, sz);
1515     #endif // wxUSE_UNICODE
1516     }
1517
1518     if ( !ok )
1519     {
1520         wxLogSysError(_("Failed to get the working directory"));
1521
1522         // VZ: the old code used to return "." on error which didn't make any
1523         //     sense at all to me - empty string is a better error indicator
1524         //     (NULL might be even better but I'm afraid this could lead to
1525         //     problems with the old code assuming the return is never NULL)
1526         buf[0] = _T('\0');
1527     }
1528     else // ok, but we might need to massage the path into the right format
1529     {
1530 #ifdef __DJGPP__
1531         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1532         //     with / deliminers. We don't like that.
1533         for (wxChar *ch = buf; *ch; ch++)
1534         {
1535             if (*ch == wxT('/'))
1536                 *ch = wxT('\\');
1537         }
1538 #endif // __DJGPP__
1539
1540 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1541 //      he needs Unix as opposed to Win32 pathnames
1542 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1543         // another example of DOS/Unix mix (Cygwin)
1544         wxString pathUnix = buf;
1545         cygwin_conv_to_full_win32_path(pathUnix, buf);
1546 #endif // __CYGWIN__
1547     }
1548
1549     return buf;
1550
1551 #if !wxUSE_UNICODE
1552     #undef cbuf
1553 #endif
1554 }
1555
1556 wxString wxGetCwd()
1557 {
1558     wxChar *buffer = new wxChar[_MAXPATHLEN];
1559     wxGetWorkingDirectory(buffer, _MAXPATHLEN);
1560     wxString str( buffer );
1561     delete [] buffer;
1562
1563     return str;
1564 }
1565
1566 bool wxSetWorkingDirectory(const wxString& d)
1567 {
1568 #if defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1569   return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1570 #elif defined(__WXPM__)
1571   return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1572 #elif defined(__WINDOWS__)
1573
1574 #ifdef __WIN32__
1575   return (bool)(SetCurrentDirectory(d) != 0);
1576 #else
1577   // Must change drive, too.
1578   bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1579   if (isDriveSpec)
1580   {
1581     wxChar firstChar = d[0];
1582
1583     // To upper case
1584     if (firstChar > 90)
1585       firstChar = firstChar - 32;
1586
1587     // To a drive number
1588     unsigned int driveNo = firstChar - 64;
1589     if (driveNo > 0)
1590     {
1591        unsigned int noDrives;
1592        _dos_setdrive(driveNo, &noDrives);
1593     }
1594   }
1595   bool success = (chdir(WXSTRINGCAST d) == 0);
1596
1597   return success;
1598 #endif
1599
1600 #endif
1601 }
1602
1603 // Get the OS directory if appropriate (such as the Windows directory).
1604 // On non-Windows platform, probably just return the empty string.
1605 wxString wxGetOSDirectory()
1606 {
1607 #if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1608     wxChar buf[256];
1609     GetWindowsDirectory(buf, 256);
1610     return wxString(buf);
1611 #else
1612     return wxEmptyString;
1613 #endif
1614 }
1615
1616 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1617 {
1618     size_t len = wxStrlen(pszFileName);
1619
1620     return len && wxIsPathSeparator(pszFileName[len - 1]);
1621 }
1622
1623 // find a file in a list of directories, returns FALSE if not found
1624 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1625 {
1626     // we assume that it's not empty
1627     wxCHECK_MSG( !wxIsEmpty(pszFile), FALSE,
1628                  _T("empty file name in wxFindFileInPath"));
1629
1630     // skip path separator in the beginning of the file name if present
1631     if ( wxIsPathSeparator(*pszFile) )
1632         pszFile++;
1633
1634     // copy the path (strtok will modify it)
1635     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1636     wxStrcpy(szPath, pszPath);
1637
1638     wxString strFile;
1639     wxChar *pc, *save_ptr;
1640     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1641           pc != NULL;
1642           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1643     {
1644         // search for the file in this directory
1645         strFile = pc;
1646         if ( !wxEndsWithPathSeparator(pc) )
1647             strFile += wxFILE_SEP_PATH;
1648         strFile += pszFile;
1649
1650         if ( wxFileExists(strFile) ) {
1651             *pStr = strFile;
1652             break;
1653         }
1654     }
1655
1656     // suppress warning about unused variable save_ptr when wxStrtok() is a
1657     // macro which throws away its third argument
1658     save_ptr = pc;
1659
1660     delete [] szPath;
1661
1662     return pc != NULL;  // if TRUE => we breaked from the loop
1663 }
1664
1665 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1666                              wxString *pstrPath,
1667                              wxString *pstrName,
1668                              wxString *pstrExt)
1669 {
1670     // it can be empty, but it shouldn't be NULL
1671     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1672
1673     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1674 }
1675
1676 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1677 {
1678     wxStructStat buf;
1679     wxStat( filename, &buf);
1680
1681     return buf.st_mtime;
1682 }
1683
1684
1685 //------------------------------------------------------------------------
1686 // wild character routines
1687 //------------------------------------------------------------------------
1688
1689 bool wxIsWild( const wxString& pattern )
1690 {
1691     wxString tmp = pattern;
1692     wxChar *pat = WXSTRINGCAST(tmp);
1693     while (*pat)
1694     {
1695         switch (*pat++)
1696         {
1697         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1698             return TRUE;
1699         case wxT('\\'):
1700             if (!*pat++)
1701                 return FALSE;
1702         }
1703     }
1704     return FALSE;
1705 }
1706
1707 /*
1708 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1709 *
1710 * The match procedure is public domain code (from ircII's reg.c)
1711 */
1712
1713 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1714 {
1715         if (text.empty())
1716         {
1717                 /* Match if both are empty. */
1718                 return pat.empty();
1719         }
1720
1721         const wxChar *m = pat.c_str(),
1722         *n = text.c_str(),
1723         *ma = NULL,
1724         *na = NULL,
1725         *mp = NULL,
1726         *np = NULL;
1727         int just = 0,
1728         pcount = 0,
1729         acount = 0,
1730         count = 0;
1731
1732         if (dot_special && (*n == wxT('.')))
1733         {
1734                 /* Never match so that hidden Unix files
1735                  * are never found. */
1736                 return FALSE;
1737         }
1738
1739         for (;;)
1740         {
1741                 if (*m == wxT('*'))
1742                 {
1743                         ma = ++m;
1744                         na = n;
1745                         just = 1;
1746                         mp = NULL;
1747                         acount = count;
1748                 }
1749                 else if (*m == wxT('?'))
1750                 {
1751                         m++;
1752                         if (!*n++)
1753                         return FALSE;
1754                 }
1755                 else
1756                 {
1757                         if (*m == wxT('\\'))
1758                         {
1759                                 m++;
1760                                 /* Quoting "nothing" is a bad thing */
1761                                 if (!*m)
1762                                 return FALSE;
1763                         }
1764                         if (!*m)
1765                         {
1766                                 /*
1767                                 * If we are out of both strings or we just
1768                                 * saw a wildcard, then we can say we have a
1769                                 * match
1770                                 */
1771                                 if (!*n)
1772                                 return TRUE;
1773                                 if (just)
1774                                 return TRUE;
1775                                 just = 0;
1776                                 goto not_matched;
1777                         }
1778                         /*
1779                         * We could check for *n == NULL at this point, but
1780                         * since it's more common to have a character there,
1781                         * check to see if they match first (m and n) and
1782                         * then if they don't match, THEN we can check for
1783                         * the NULL of n
1784                         */
1785                         just = 0;
1786                         if (*m == *n)
1787                         {
1788                                 m++;
1789                                 if (*n == wxT(' '))
1790                                 mp = NULL;
1791                                 count++;
1792                                 n++;
1793                         }
1794                         else
1795                         {
1796
1797                                 not_matched:
1798
1799                                 /*
1800                                 * If there are no more characters in the
1801                                 * string, but we still need to find another
1802                                 * character (*m != NULL), then it will be
1803                                 * impossible to match it
1804                                 */
1805                                 if (!*n)
1806                                 return FALSE;
1807                                 if (mp)
1808                                 {
1809                                         m = mp;
1810                                         if (*np == wxT(' '))
1811                                         {
1812                                                 mp = NULL;
1813                                                 goto check_percent;
1814                                         }
1815                                         n = ++np;
1816                                         count = pcount;
1817                                 }
1818                                 else
1819                                 check_percent:
1820
1821                                 if (ma)
1822                                 {
1823                                         m = ma;
1824                                         n = ++na;
1825                                         count = acount;
1826                                 }
1827                                 else
1828                                 return FALSE;
1829                         }
1830                 }
1831         }
1832 }
1833
1834
1835 #ifdef __VISUALC__
1836     #pragma warning(default:4706)   // assignment within conditional expression
1837 #endif // VC++