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& 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 #else // __WXWINCE__
 213     wxUnusedVar(envVariable);
 214 #endif // !__WXWINCE__/__WXWINCE__
 215 }
 216
 217 // Given a full filename (with path), ensure that that file can
 218 // be accessed again USING FILENAME ONLY by adding the path
 219 // to the list if not already there.
 220 void wxPathList::EnsureFileAccessible (const wxString& path)
 221 {
 222     wxString path_only(wxPathOnly(path));
 223     if ( !path_only.empty() )
 224     {
 225         if ( !Member(path_only) )
 226             Add(path_only);
 227     }
 228 }
 229
 230 bool wxPathList::Member (const wxString& path)
 231 {
 232   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 233   {
 234       wxString path2( node->GetData() );
 235       if (
 236 #if defined(__WINDOWS__) || defined(__OS2__) || defined(__VMS__) || defined(__WXMAC__)
 237       // Case INDEPENDENT
 238           path.CompareTo (path2, wxString::ignoreCase) == 0
 239 #else
 240       // Case sensitive File System
 241           path.CompareTo (path2) == 0
 242 #endif
 243         )
 244         return true;
 245   }
 246   return false;
 247 }
 248
 249 wxString wxPathList::FindValidPath (const wxString& file)
 250 {
 251   if (wxFileExists (wxExpandPath(wxFileFunctionsBuffer, file)))
 252     return wxString(wxFileFunctionsBuffer);
 253
 254   wxChar buf[_MAXPATHLEN];
 255   wxStrcpy(buf, wxFileFunctionsBuffer);
 256
 257   wxChar *filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 258
 259   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 260     {
 261       const wxChar *path = node->GetData();
 262       wxStrcpy (wxFileFunctionsBuffer, path);
 263       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 264       if (ch != wxT('\\') && ch != wxT('/'))
 265         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 266       wxStrcat (wxFileFunctionsBuffer, filename);
 267 #ifdef __WINDOWS__
 268       wxUnix2DosFilename (wxFileFunctionsBuffer);
 269 #endif
 270       if (wxFileExists (wxFileFunctionsBuffer))
 271       {
 272         return wxString(wxFileFunctionsBuffer);        // Found!
 273       }
 274     }                                // for()
 275
 276   return wxEmptyString;                    // Not found
 277 }
 278
 279 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 280 {
 281     wxString f = FindValidPath(file);
 282     if ( f.empty() || wxIsAbsolutePath(f) )
 283         return f;
 284
 285     wxString buf;
 286     wxGetWorkingDirectory(wxStringBuffer(buf, _MAXPATHLEN), _MAXPATHLEN);
 287
 288     if ( !wxEndsWithPathSeparator(buf) )
 289     {
 290         buf += wxFILE_SEP_PATH;
 291     }
 292     buf += f;
 293
 294     return buf;
 295 }
 296
 297 bool
 298 wxFileExists (const wxString& filename)
 299 {
 300 #if defined(__WXPALMOS__)
 301     return false;
 302 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 303     // we must use GetFileAttributes() instead of the ANSI C functions because
 304     // it can cope with network (UNC) paths unlike them
 305     DWORD ret = ::GetFileAttributes(filename);
 306
 307     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 308 #else // !__WIN32__
 309     wxStructStat st;
 310 #ifndef wxNEED_WX_UNISTD_H
 311     return wxStat( filename.fn_str() , &st) == 0 && (st.st_mode & S_IFREG);
 312 #else
 313     return wxStat( filename , &st) == 0 && (st.st_mode & S_IFREG);
 314 #endif
 315 #endif // __WIN32__/!__WIN32__
 316 }
 317
 318 bool
 319 wxIsAbsolutePath (const wxString& filename)
 320 {
 321     if (!filename.empty())
 322     {
 323 #if defined(__WXMAC__) && !defined(__DARWIN__)
 324         // Classic or Carbon CodeWarrior like
 325         // Carbon with Apple DevTools is Unix like
 326
 327         // This seems wrong to me, but there is no fix. since
 328         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 329         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 330         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 331             return true ;
 332 #else
 333         // Unix like or Windows
 334         if (filename[0] == wxT('/'))
 335             return true;
 336 #endif
 337 #ifdef __VMS__
 338         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 339             return true;
 340 #endif
 341 #if defined(__WINDOWS__) || defined(__OS2__)
 342         // MSDOS like
 343         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 344             return true;
 345 #endif
 346     }
 347     return false ;
 348 }
 349
 350 /*
 351  * Strip off any extension (dot something) from end of file,
 352  * IF one exists. Inserts zero into buffer.
 353  *
 354  */
 355
 356 void wxStripExtension(wxChar *buffer)
 357 {
 358     int len = wxStrlen(buffer);
 359     int i = len-1;
 360     while (i > 0)
 361     {
 362         if (buffer[i] == wxT('.'))
 363         {
 364             buffer[i] = 0;
 365             break;
 366         }
 367         i --;
 368     }
 369 }
 370
 371 void wxStripExtension(wxString& buffer)
 372 {
 373     //RN:  Be careful about the handling the case where
 374     //buffer.Length() == 0
 375     for(size_t i = buffer.Length() - 1; i != wxString::npos; --i)
 376     {
 377         if (buffer.GetChar(i) == wxT('.'))
 378         {
 379           buffer = buffer.Left(i);
 380           break;
 381         }
 382     }
 383 }
 384
 385 // Destructive removal of /./ and /../ stuff
 386 wxChar *wxRealPath (wxChar *path)
 387 {
 388 #ifdef __WXMSW__
 389   static const wxChar SEP = wxT('\\');
 390   wxUnix2DosFilename(path);
 391 #else
 392   static const wxChar SEP = wxT('/');
 393 #endif
 394   if (path[0] && path[1]) {
 395     /* MATTHEW: special case "/./x" */
 396     wxChar *p;
 397     if (path[2] == SEP && path[1] == wxT('.'))
 398       p = &path[0];
 399     else
 400       p = &path[2];
 401     for (; *p; p++)
 402       {
 403         if (*p == SEP)
 404           {
 405             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 406               {
 407                 wxChar *q;
 408                 for (q = p - 1; q >= path && *q != SEP; q--)
 409                 {
 410                     // Empty
 411                 }
 412
 413                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 414                     && (q - 1 <= path || q[-1] != SEP))
 415                   {
 416                     wxStrcpy (q, p + 3);
 417                     if (path[0] == wxT('\0'))
 418                       {
 419                         path[0] = SEP;
 420                         path[1] = wxT('\0');
 421                       }
 422 #if defined(__WXMSW__) || defined(__OS2__)
 423                     /* Check that path[2] is NULL! */
 424                     else if (path[1] == wxT(':') && !path[2])
 425                       {
 426                         path[2] = SEP;
 427                         path[3] = wxT('\0');
 428                       }
 429 #endif
 430                     p = q - 1;
 431                   }
 432               }
 433             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 434               wxStrcpy (p, p + 2);
 435           }
 436       }
 437   }
 438   return path;
 439 }
 440
 441 // Must be destroyed
 442 wxChar *wxCopyAbsolutePath(const wxString& filename)
 443 {
 444   if (filename.empty())
 445     return (wxChar *) NULL;
 446
 447   if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename))) {
 448     wxChar  buf[_MAXPATHLEN];
 449     buf[0] = wxT('\0');
 450     wxGetWorkingDirectory(buf, WXSIZEOF(buf));
 451     wxChar ch = buf[wxStrlen(buf) - 1];
 452 #ifdef __WXMSW__
 453     if (ch != wxT('\\') && ch != wxT('/'))
 454         wxStrcat(buf, wxT("\\"));
 455 #else
 456     if (ch != wxT('/'))
 457         wxStrcat(buf, wxT("/"));
 458 #endif
 459     wxStrcat(buf, wxFileFunctionsBuffer);
 460     return MYcopystring( wxRealPath(buf) );
 461   }
 462   return MYcopystring( wxFileFunctionsBuffer );
 463 }
 464
 465 /*-
 466  Handles:
 467    ~/ => home dir
 468    ~user/ => user's home dir
 469    If the environment variable a = "foo" and b = "bar" then:
 470    Unix:
 471         $a        =>        foo
 472         $a$b        =>        foobar
 473         $a.c        =>        foo.c
 474         xxx$a        =>        xxxfoo
 475         ${a}!        =>        foo!
 476         $(b)!        =>        bar!
 477         \$a        =>        \$a
 478    MSDOS:
 479         $a        ==>        $a
 480         $(a)        ==>        foo
 481         $(a)$b        ==>        foo$b
 482         $(a)$(b)==>        foobar
 483         test.$$        ==>        test.$$
 484  */
 485
 486 /* input name in name, pathname output to buf. */
 487
 488 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 489 {
 490     register wxChar *d, *s, *nm;
 491     wxChar          lnm[_MAXPATHLEN];
 492     int             q;
 493
 494     // Some compilers don't like this line.
 495 //    const wxChar    trimchars[] = wxT("\n \t");
 496
 497     wxChar      trimchars[4];
 498     trimchars[0] = wxT('\n');
 499     trimchars[1] = wxT(' ');
 500     trimchars[2] = wxT('\t');
 501     trimchars[3] = 0;
 502
 503 #ifdef __WXMSW__
 504     const wxChar     SEP = wxT('\\');
 505 #else
 506     const wxChar     SEP = wxT('/');
 507 #endif
 508     buf[0] = wxT('\0');
 509     if (name == NULL || *name == wxT('\0'))
 510         return buf;
 511     nm = MYcopystring(name); // Make a scratch copy
 512     wxChar *nm_tmp = nm;
 513
 514     /* Skip leading whitespace and cr */
 515     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 516         nm++;
 517     /* And strip off trailing whitespace and cr */
 518     s = nm + (q = wxStrlen(nm)) - 1;
 519     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 520         *s = wxT('\0');
 521
 522     s = nm;
 523     d = lnm;
 524 #ifdef __WXMSW__
 525     q = FALSE;
 526 #else
 527     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 528 #endif
 529
 530     /* Expand inline environment variables */
 531 #ifdef __VISAGECPP__
 532     while (*d)
 533     {
 534       *d++ = *s;
 535       if(*s == wxT('\\'))
 536       {
 537         *(d - 1) = *++s;
 538         if (*d)
 539         {
 540           s++;
 541           continue;
 542         }
 543         else
 544            break;
 545       }
 546       else
 547 #else
 548     while ((*d++ = *s) != 0) {
 549 #  ifndef __WXMSW__
 550         if (*s == wxT('\\')) {
 551             if ((*(d - 1) = *++s)) {
 552                 s++;
 553                 continue;
 554             } else
 555                 break;
 556         } else
 557 #  endif
 558 #endif
 559             // No env variables on WinCE
 560 #ifndef __WXWINCE__
 561 #ifdef __WXMSW__
 562         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 563 #else
 564         if (*s++ == wxT('$'))
 565 #endif
 566         {
 567             register wxChar  *start = d;
 568             register int     braces = (*s == wxT('{') || *s == wxT('('));
 569             register wxChar  *value;
 570             while ((*d++ = *s) != 0)
 571                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 572                     break;
 573                 else
 574                     s++;
 575             *--d = 0;
 576             value = wxGetenv(braces ? start + 1 : start);
 577             if (value) {
 578                 for ((d = start - 1); (*d++ = *value++) != 0;)
 579                 {
 580                     // Empty
 581                 }
 582
 583                 d--;
 584                 if (braces && *s)
 585                     s++;
 586             }
 587         }
 588 #endif
 589         // __WXWINCE__
 590     }
 591
 592     /* Expand ~ and ~user */
 593     nm = lnm;
 594     if (nm[0] == wxT('~') && !q)
 595     {
 596         /* prefix ~ */
 597         if (nm[1] == SEP || nm[1] == 0)
 598         {        /* ~/filename */
 599         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 600             if ((s = WXSTRINGCAST wxGetUserHome(wxEmptyString)) != NULL) {
 601                 if (*++nm)
 602                     nm++;
 603             }
 604         } else
 605         {                /* ~user/filename */
 606             register wxChar  *nnm;
 607             register wxChar  *home;
 608             for (s = nm; *s && *s != SEP; s++)
 609             {
 610                 // Empty
 611             }
 612             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 613             was_sep = (*s == SEP);
 614             nnm = *s ? s + 1 : s;
 615             *s = 0;
 616         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 617             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL) {
 618                if (was_sep) /* replace only if it was there: */
 619                    *s = SEP;
 620                 s = NULL;
 621             } else {
 622                 nm = nnm;
 623                 s = home;
 624             }
 625         }
 626     }
 627
 628     d = buf;
 629     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 630         /* Copy home dir */
 631         while (wxT('\0') != (*d++ = *s++))
 632           /* loop */;
 633         // Handle root home
 634         if (d - 1 > buf && *(d - 2) != SEP)
 635           *(d - 1) = SEP;
 636     }
 637     s = nm;
 638     while ((*d++ = *s++) != 0)
 639     {
 640         // Empty
 641     }
 642     delete[] nm_tmp; // clean up alloc
 643     /* Now clean up the buffer */
 644     return wxRealPath(buf);
 645 }
 646
 647 /* Contract Paths to be build upon an environment variable
 648    component:
 649
 650    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 651
 652    The call wxExpandPath can convert these back!
 653  */
 654 wxChar *
 655 wxContractPath (const wxString& filename, const wxString& envname, const wxString& user)
 656 {
 657   static wxChar dest[_MAXPATHLEN];
 658
 659   if (filename.empty())
 660     return (wxChar *) NULL;
 661
 662   wxStrcpy (dest, WXSTRINGCAST filename);
 663 #ifdef __WXMSW__
 664   wxUnix2DosFilename(dest);
 665 #endif
 666
 667   // Handle environment
 668   const wxChar *val;
 669 #ifndef __WXWINCE__
 670   wxChar *tcp;
 671   if (!envname.empty() && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 672      (tcp = wxStrstr (dest, val)) != NULL)
 673     {
 674         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 675         *tcp++ = wxT('$');
 676         *tcp++ = wxT('{');
 677         wxStrcpy (tcp, WXSTRINGCAST envname);
 678         wxStrcat (tcp, wxT("}"));
 679         wxStrcat (tcp, wxFileFunctionsBuffer);
 680     }
 681 #else
 682   wxUnusedVar(envname);
 683 #endif
 684
 685   // Handle User's home (ignore root homes!)
 686   val = wxGetUserHome (user);
 687   if (!val)
 688     return dest;
 689
 690   const size_t len = wxStrlen(val);
 691   if (len <= 2)
 692     return dest;
 693
 694   if (wxStrncmp(dest, val, len) == 0)
 695   {
 696     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 697     if (!user.empty())
 698            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 699     wxStrcat(wxFileFunctionsBuffer, dest + len);
 700     wxStrcpy (dest, wxFileFunctionsBuffer);
 701   }
 702
 703   return dest;
 704 }
 705
 706 // Return just the filename, not the path (basename)
 707 wxChar *wxFileNameFromPath (wxChar *path)
 708 {
 709     wxString p = path;
 710     wxString n = wxFileNameFromPath(p);
 711
 712     return path + p.length() - n.length();
 713 }
 714
 715 wxString wxFileNameFromPath (const wxString& path)
 716 {
 717     wxString name, ext;
 718     wxFileName::SplitPath(path, NULL, &name, &ext);
 719
 720     wxString fullname = name;
 721     if ( !ext.empty() )
 722     {
 723         fullname << wxFILE_SEP_EXT << ext;
 724     }
 725
 726     return fullname;
 727 }
 728
 729 // Return just the directory, or NULL if no directory
 730 wxChar *
 731 wxPathOnly (wxChar *path)
 732 {
 733     if (path && *path)
 734     {
 735         static wxChar buf[_MAXPATHLEN];
 736
 737         // Local copy
 738         wxStrcpy (buf, path);
 739
 740         int l = wxStrlen(path);
 741         int i = l - 1;
 742
 743         // Search backward for a backward or forward slash
 744         while (i > -1)
 745         {
 746 #if defined(__WXMAC__) && !defined(__DARWIN__)
 747             // Classic or Carbon CodeWarrior like
 748             // Carbon with Apple DevTools is Unix like
 749             if (path[i] == wxT(':') )
 750             {
 751                 buf[i] = 0;
 752                 return buf;
 753             }
 754 #else
 755             // Unix like or Windows
 756             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 757             {
 758                 buf[i] = 0;
 759                 return buf;
 760             }
 761 #endif
 762 #ifdef __VMS__
 763             if (path[i] == wxT(']'))
 764             {
 765                 buf[i+1] = 0;
 766                 return buf;
 767             }
 768 #endif
 769             i --;
 770         }
 771
 772 #if defined(__WXMSW__) || defined(__OS2__)
 773         // Try Drive specifier
 774         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 775         {
 776             // A:junk --> A:. (since A:.\junk Not A:\junk)
 777             buf[2] = wxT('.');
 778             buf[3] = wxT('\0');
 779             return buf;
 780         }
 781 #endif
 782     }
 783     return (wxChar *) NULL;
 784 }
 785
 786 // Return just the directory, or NULL if no directory
 787 wxString wxPathOnly (const wxString& path)
 788 {
 789     if (!path.empty())
 790     {
 791         wxChar buf[_MAXPATHLEN];
 792
 793         // Local copy
 794         wxStrcpy (buf, WXSTRINGCAST path);
 795
 796         int l = path.Length();
 797         int i = l - 1;
 798
 799         // Search backward for a backward or forward slash
 800         while (i > -1)
 801         {
 802 #if defined(__WXMAC__) && !defined(__DARWIN__)
 803             // Classic or Carbon CodeWarrior like
 804             // Carbon with Apple DevTools is Unix like
 805             if (path[i] == wxT(':') )
 806             {
 807                 buf[i] = 0;
 808                 return wxString(buf);
 809             }
 810 #else
 811             // Unix like or Windows
 812             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 813             {
 814                 // Don't return an empty string
 815                 if (i == 0)
 816                     i ++;
 817                 buf[i] = 0;
 818                 return wxString(buf);
 819             }
 820 #endif
 821 #ifdef __VMS__
 822             if (path[i] == wxT(']'))
 823             {
 824                 buf[i+1] = 0;
 825                 return wxString(buf);
 826             }
 827 #endif
 828             i --;
 829         }
 830
 831 #if defined(__WXMSW__) || defined(__OS2__)
 832         // Try Drive specifier
 833         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 834         {
 835             // A:junk --> A:. (since A:.\junk Not A:\junk)
 836             buf[2] = wxT('.');
 837             buf[3] = wxT('\0');
 838             return wxString(buf);
 839         }
 840 #endif
 841     }
 842     return wxEmptyString;
 843 }
 844
 845 // Utility for converting delimiters in DOS filenames to UNIX style
 846 // and back again - or we get nasty problems with delimiters.
 847 // Also, convert to lower case, since case is significant in UNIX.
 848
 849 #if defined(__WXMAC__)
 850
 851 #if TARGET_API_MAC_OSX
 852 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 853 #else
 854 #define kDefaultPathStyle kCFURLHFSPathStyle
 855 #endif
 856
 857 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 858 {
 859     CFURLRef fullURLRef;
 860     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 861     if ( additionalPathComponent )
 862     {
 863         CFURLRef parentURLRef = fullURLRef ;
 864         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 865             additionalPathComponent,false);
 866         CFRelease( parentURLRef ) ;
 867     }
 868     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 869     CFRelease( fullURLRef ) ;
 870     return wxMacCFStringHolder(cfString).AsString(wxLocale::GetSystemEncoding());
 871 }
 872
 873 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 874 {
 875     OSStatus err = noErr ;
 876     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) , kDefaultPathStyle, false);
 877     if ( NULL != url )
 878     {
 879         if ( CFURLGetFSRef(url, fsRef) == false )
 880             err = fnfErr ;
 881         CFRelease( url ) ;
 882     }
 883     else
 884     {
 885         err = fnfErr ;
 886     }
 887     return err ;
 888 }
 889
 890 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 891 {
 892     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 893                                                       uniname->unicode,
 894                                                       uniname->length );
 895     return wxMacCFStringHolder(cfname).AsString() ;
 896 }
 897
 898 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 899 {
 900     FSRef fsRef ;
 901     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 902     {
 903         return wxMacFSRefToPath( &fsRef ) ;
 904     }
 905     return wxEmptyString ;
 906 }
 907
 908 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 909 {
 910     OSStatus err = noErr ;
 911     FSRef fsRef ;
 912     wxMacPathToFSRef( path , &fsRef ) ;
 913     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 914 }
 915
 916 #endif // __WXMAC__
 917
 918 void
 919 wxDos2UnixFilename (wxChar *s)
 920 {
 921   if (s)
 922     while (*s)
 923       {
 924         if (*s == _T('\\'))
 925           *s = _T('/');
 926 #ifdef __WXMSW__
 927         else
 928           *s = (wxChar)wxTolower (*s);        // Case INDEPENDENT
 929 #endif
 930         s++;
 931       }
 932 }
 933
 934 void
 935 #if defined(__WXMSW__) || defined(__OS2__)
 936 wxUnix2DosFilename (wxChar *s)
 937 #else
 938 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
 939 #endif
 940 {
 941 // Yes, I really mean this to happen under DOS only! JACS
 942 #if defined(__WXMSW__) || defined(__OS2__)
 943   if (s)
 944     while (*s)
 945       {
 946         if (*s == wxT('/'))
 947           *s = wxT('\\');
 948         s++;
 949       }
 950 #endif
 951 }
 952
 953 // Concatenate two files to form third
 954 bool
 955 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 956 {
 957 #if wxUSE_FILE
 958
 959     wxFile in1(file1), in2(file2);
 960     wxTempFile out(file3);
 961
 962     if ( !in1.IsOpened() || !in2.IsOpened() || !out.IsOpened() )
 963         return false;
 964
 965     ssize_t ofs;
 966     unsigned char buf[1024];
 967
 968     for( int i=0; i<2; i++)
 969     {
 970         wxFile *in = i==0 ? &in1 : &in2;
 971         do{
 972             if ( (ofs = in->Read(buf,WXSIZEOF(buf))) == wxInvalidOffset ) return false;
 973             if ( ofs > 0 )
 974                 if ( !out.Write(buf,ofs) )
 975                     return false;
 976         } while ( ofs == (ssize_t)WXSIZEOF(buf) );
 977     }
 978
 979     return out.Commit();
 980
 981 #else
 982
 983     wxUnusedVar(file1);
 984     wxUnusedVar(file2);
 985     wxUnusedVar(file3);
 986     return false;
 987
 988 #endif
 989 }
 990
 991 // Copy files
 992 bool
 993 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
 994 {
 995 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 996     // CopyFile() copies file attributes and modification time too, so use it
 997     // instead of our code if available
 998     //
 999     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
1000     if ( !::CopyFile(file1, file2, !overwrite) )
1001     {
1002         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1003                       file1.c_str(), file2.c_str());
1004
1005         return false;
1006     }
1007 #elif defined(__OS2__)
1008     if ( ::DosCopy((PSZ)file1.c_str(), (PSZ)file2.c_str(), overwrite ? DCPY_EXISTING : 0) != 0 )
1009         return false;
1010 #elif defined(__PALMOS__)
1011     // TODO with http://www.palmos.com/dev/support/docs/protein_books/Memory_Databases_Files/
1012     return false;
1013 #elif wxUSE_FILE // !Win32
1014
1015     wxStructStat fbuf;
1016     // get permissions of file1
1017     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1018     {
1019         // the file probably doesn't exist or we haven't the rights to read
1020         // from it anyhow
1021         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1022                       file1.c_str());
1023         return false;
1024     }
1025
1026     // open file1 for reading
1027     wxFile fileIn(file1, wxFile::read);
1028     if ( !fileIn.IsOpened() )
1029         return false;
1030
1031     // remove file2, if it exists. This is needed for creating
1032     // file2 with the correct permissions in the next step
1033     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1034     {
1035         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1036                       file2.c_str());
1037         return false;
1038     }
1039
1040     // reset the umask as we want to create the file with exactly the same
1041     // permissions as the original one
1042     wxCHANGE_UMASK(0);
1043
1044     // create file2 with the same permissions than file1 and open it for
1045     // writing
1046
1047     wxFile fileOut;
1048     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1049         return false;
1050
1051     // copy contents of file1 to file2
1052     char buf[4096];
1053     size_t count;
1054     for ( ;; )
1055     {
1056         count = fileIn.Read(buf, WXSIZEOF(buf));
1057         if ( fileIn.Error() )
1058             return false;
1059
1060         // end of file?
1061         if ( !count )
1062             break;
1063
1064         if ( fileOut.Write(buf, count) < count )
1065             return false;
1066     }
1067
1068     // we can expect fileIn to be closed successfully, but we should ensure
1069     // that fileOut was closed as some write errors (disk full) might not be
1070     // detected before doing this
1071     if ( !fileIn.Close() || !fileOut.Close() )
1072         return false;
1073
1074 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1075     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1076     // however
1077     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1078     {
1079         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1080                       file2.c_str());
1081         return false;
1082     }
1083 #endif // OS/2 || Mac
1084
1085 #else // !Win32 && ! wxUSE_FILE
1086
1087     // impossible to simulate with wxWidgets API
1088     wxUnusedVar(file1);
1089     wxUnusedVar(file2);
1090     wxUnusedVar(overwrite);
1091     return false;
1092
1093 #endif // __WXMSW__ && __WIN32__
1094
1095     return true;
1096 }
1097
1098 bool
1099 wxRenameFile (const wxString& file1, const wxString& file2)
1100 {
1101 #if !defined(__WXWINCE__) && !defined(__WXPALMOS__)
1102     // Normal system call
1103   if ( wxRename (file1, file2) == 0 )
1104     return true;
1105 #endif
1106
1107   // Try to copy
1108   if (wxCopyFile(file1, file2)) {
1109     wxRemoveFile(file1);
1110     return true;
1111   }
1112   // Give up
1113   return false;
1114 }
1115
1116 bool wxRemoveFile(const wxString& file)
1117 {
1118 #if defined(__VISUALC__) \
1119  || defined(__BORLANDC__) \
1120  || defined(__WATCOMC__) \
1121  || defined(__DMC__) \
1122  || defined(__GNUWIN32__) \
1123  || (defined(__MWERKS__) && defined(__MSL__))
1124     int res = wxRemove(file);
1125 #elif defined(__WXMAC__)
1126     int res = unlink(wxFNCONV(file));
1127 #elif defined(__WXPALMOS__)
1128     int res = 1;
1129     // TODO with VFSFileDelete()
1130 #else
1131     int res = unlink(OS_FILENAME(file));
1132 #endif
1133
1134     return res == 0;
1135 }
1136
1137 bool wxMkdir(const wxString& dir, int perm)
1138 {
1139 #if defined(__WXPALMOS__)
1140     return false;
1141 #elif defined(__WXMAC__) && !defined(__UNIX__)
1142     return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1143 #else // !Mac
1144     const wxChar *dirname = dir.c_str();
1145
1146     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1147     // for the GNU compiler
1148 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1149   #if defined(MSVCRT)
1150     wxUnusedVar(perm);
1151     if ( mkdir(wxFNCONV(dirname)) != 0 )
1152   #else
1153     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1154   #endif
1155 #elif defined(__OS2__)
1156     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1157 #elif defined(__DOS__)
1158   #if defined(__WATCOMC__)
1159     (void)perm;
1160     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1161   #elif defined(__DJGPP__)
1162     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1163   #else
1164     #error "Unsupported DOS compiler!"
1165   #endif
1166 #else  // !MSW, !DOS and !OS/2 VAC++
1167     wxUnusedVar(perm);
1168 #ifdef __WXWINCE__
1169     if ( !CreateDirectory(dirname, NULL) )
1170 #else
1171     if ( wxMkDir(dir.fn_str()) != 0 )
1172 #endif
1173 #endif // !MSW/MSW
1174     {
1175         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1176
1177         return false;
1178     }
1179
1180     return true;
1181 #endif // Mac/!Mac
1182 }
1183
1184 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1185 {
1186 #if defined(__VMS__)
1187     return false; //to be changed since rmdir exists in VMS7.x
1188 #elif defined(__OS2__)
1189     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1190 #elif defined(__WXWINCE__)
1191     return (CreateDirectory(dir, NULL) != 0);
1192 #elif defined(__WXPALMOS__)
1193     // TODO with VFSFileRename()
1194     return false;
1195 #else
1196     return (wxRmDir(OS_FILENAME(dir)) == 0);
1197 #endif
1198 }
1199
1200 // does the path exists? (may have or not '/' or '\\' at the end)
1201 bool wxDirExists(const wxChar *pszPathName)
1202 {
1203     wxString strPath(pszPathName);
1204
1205 #if defined(__WINDOWS__) || defined(__OS2__)
1206     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1207     // so remove all trailing backslashes from the path - but don't do this for
1208     // the pathes "d:\" (which are different from "d:") nor for just "\"
1209     while ( wxEndsWithPathSeparator(strPath) )
1210     {
1211         size_t len = strPath.length();
1212         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1213             break;
1214
1215         strPath.Truncate(len - 1);
1216     }
1217 #endif // __WINDOWS__
1218
1219 #ifdef __OS2__
1220     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1221     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1222         strPath << _T('.');
1223 #endif
1224
1225 #if defined(__WXPALMOS__)
1226     return false;
1227 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
1228     // stat() can't cope with network paths
1229     DWORD ret = ::GetFileAttributes(strPath);
1230
1231     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1232 #elif defined(__OS2__)
1233     return (::DosSetCurrentDir((PSZ)(WXSTRINGCAST strPath)));
1234 #else // !__WIN32__
1235
1236     wxStructStat st;
1237 #ifndef __VISAGECPP__
1238     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1239 #else
1240     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1241     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1242 #endif
1243
1244 #endif // __WIN32__/!__WIN32__
1245 }
1246
1247 // Get a temporary filename, opening and closing the file.
1248 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1249 {
1250 #if wxUSE_FILE
1251     wxString filename = wxFileName::CreateTempFileName(prefix);
1252     if ( filename.empty() )
1253         return NULL;
1254
1255     if ( buf )
1256         wxStrcpy(buf, filename);
1257     else
1258         buf = MYcopystring(filename);
1259
1260     return buf;
1261 #else
1262     wxUnusedVar(prefix);
1263     wxUnusedVar(buf);
1264     // wxFileName::CreateTempFileName needs wxFile class enabled
1265     return NULL;
1266 #endif
1267 }
1268
1269 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1270 {
1271     buf = wxGetTempFileName(prefix);
1272
1273     return !buf.empty();
1274 }
1275
1276 // Get first file name matching given wild card.
1277
1278 static wxDir *gs_dir = NULL;
1279 static wxString gs_dirPath;
1280
1281 wxString wxFindFirstFile(const wxChar *spec, int flags)
1282 {
1283     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1284     if ( gs_dirPath.empty() )
1285         gs_dirPath = wxT(".");
1286     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1287         gs_dirPath << wxFILE_SEP_PATH;
1288
1289     if (gs_dir)
1290         delete gs_dir;
1291     gs_dir = new wxDir(gs_dirPath);
1292
1293     if ( !gs_dir->IsOpened() )
1294     {
1295         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1296         return wxEmptyString;
1297     }
1298
1299     int dirFlags;
1300     switch (flags)
1301     {
1302         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1303         case wxFILE: dirFlags = wxDIR_FILES; break;
1304         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1305     }
1306
1307     wxString result;
1308     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1309     if ( result.empty() )
1310     {
1311         wxDELETE(gs_dir);
1312         return result;
1313     }
1314
1315     return gs_dirPath + result;
1316 }
1317
1318 wxString wxFindNextFile()
1319 {
1320     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1321
1322     wxString result;
1323     gs_dir->GetNext(&result);
1324
1325     if ( result.empty() )
1326     {
1327         wxDELETE(gs_dir);
1328         return result;
1329     }
1330
1331     return gs_dirPath + result;
1332 }
1333
1334
1335 // Get current working directory.
1336 // If buf is NULL, allocates space using new, else
1337 // copies into buf.
1338 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1339 {
1340 #if defined(__WXPALMOS__)
1341     // TODO ?
1342     return NULL;
1343 #elif defined(__WXWINCE__)
1344     // TODO
1345     wxUnusedVar(buf);
1346     wxUnusedVar(sz);
1347     return NULL;
1348 #else
1349     if ( !buf )
1350     {
1351         buf = new wxChar[sz + 1];
1352     }
1353
1354     bool ok wxDUMMY_INITIALIZE(false);
1355
1356     // for the compilers which have Unicode version of _getcwd(), call it
1357     // directly, for the others call the ANSI version and do the translation
1358 #if !wxUSE_UNICODE
1359     #define cbuf buf
1360 #else // wxUSE_UNICODE
1361     bool needsANSI = true;
1362
1363     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1364         // This is not legal code as the compiler
1365         // is allowed destroy the wxCharBuffer.
1366         // wxCharBuffer c_buffer(sz);
1367         // char *cbuf = (char*)(const char*)c_buffer;
1368         char cbuf[_MAXPATHLEN];
1369     #endif
1370
1371     #ifdef HAVE_WGETCWD
1372         #if wxUSE_UNICODE_MSLU
1373             if ( wxGetOsVersion() != wxWIN95 )
1374         #else
1375             char *cbuf = NULL; // never really used because needsANSI will always be false
1376         #endif
1377             {
1378                 ok = _wgetcwd(buf, sz) != NULL;
1379                 needsANSI = false;
1380             }
1381     #endif
1382
1383     if ( needsANSI )
1384 #endif // wxUSE_UNICODE
1385     {
1386     #if defined(_MSC_VER) || defined(__MINGW32__)
1387         ok = _getcwd(cbuf, sz) != NULL;
1388     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1389         char lbuf[1024] ;
1390         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1391         {
1392             wxString res( lbuf , *wxConvCurrent ) ;
1393             wxStrcpy( buf , res ) ;
1394             ok = true;
1395         }
1396         else
1397             ok = false ;
1398     #elif defined(__OS2__)
1399         APIRET rc;
1400         ULONG ulDriveNum = 0;
1401         ULONG ulDriveMap = 0;
1402         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1403         ok = rc == 0;
1404         if (ok)
1405         {
1406             sz -= 3;
1407             rc = ::DosQueryCurrentDir( 0 // current drive
1408                                       ,cbuf + 3
1409                                       ,(PULONG)&sz
1410                                      );
1411             cbuf[0] = 'A' + (ulDriveNum - 1);
1412             cbuf[1] = ':';
1413             cbuf[2] = '\\';
1414             ok = rc == 0;
1415         }
1416     #else // !Win32/VC++ !Mac !OS2
1417         ok = getcwd(cbuf, sz) != NULL;
1418     #endif // platform
1419
1420     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1421         // finally convert the result to Unicode if needed
1422         wxConvFile.MB2WC(buf, cbuf, sz);
1423     #endif // wxUSE_UNICODE
1424     }
1425
1426     if ( !ok )
1427     {
1428         wxLogSysError(_("Failed to get the working directory"));
1429
1430         // VZ: the old code used to return "." on error which didn't make any
1431         //     sense at all to me - empty string is a better error indicator
1432         //     (NULL might be even better but I'm afraid this could lead to
1433         //     problems with the old code assuming the return is never NULL)
1434         buf[0] = _T('\0');
1435     }
1436     else // ok, but we might need to massage the path into the right format
1437     {
1438 #ifdef __DJGPP__
1439         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1440         //     with / deliminers. We don't like that.
1441         for (wxChar *ch = buf; *ch; ch++)
1442         {
1443             if (*ch == wxT('/'))
1444                 *ch = wxT('\\');
1445         }
1446 #endif // __DJGPP__
1447
1448 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1449 //      he needs Unix as opposed to Win32 pathnames
1450 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1451         // another example of DOS/Unix mix (Cygwin)
1452         wxString pathUnix = buf;
1453         cygwin_conv_to_full_win32_path(pathUnix, buf);
1454 #endif // __CYGWIN__
1455     }
1456
1457     return buf;
1458
1459 #if !wxUSE_UNICODE
1460     #undef cbuf
1461 #endif
1462
1463 #endif
1464     // __WXWINCE__
1465 }
1466
1467 wxString wxGetCwd()
1468 {
1469     wxChar *buffer = new wxChar[_MAXPATHLEN];
1470     wxGetWorkingDirectory(buffer, _MAXPATHLEN);
1471     wxString str( buffer );
1472     delete [] buffer;
1473
1474     return str;
1475 }
1476
1477 bool wxSetWorkingDirectory(const wxString& d)
1478 {
1479 #if defined(__OS2__)
1480     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1481 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1482     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1483 #elif defined(__WINDOWS__)
1484
1485 #ifdef __WIN32__
1486 #ifdef __WXWINCE__
1487     // No equivalent in WinCE
1488     wxUnusedVar(d);
1489     return false;
1490 #else
1491     return (bool)(SetCurrentDirectory(d) != 0);
1492 #endif
1493 #else
1494     // Must change drive, too.
1495     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1496     if (isDriveSpec)
1497     {
1498         wxChar firstChar = d[0];
1499
1500         // To upper case
1501         if (firstChar > 90)
1502             firstChar = firstChar - 32;
1503
1504         // To a drive number
1505         unsigned int driveNo = firstChar - 64;
1506         if (driveNo > 0)
1507         {
1508             unsigned int noDrives;
1509             _dos_setdrive(driveNo, &noDrives);
1510         }
1511     }
1512     bool success = (chdir(WXSTRINGCAST d) == 0);
1513
1514     return success;
1515 #endif
1516
1517 #endif
1518 }
1519
1520 // Get the OS directory if appropriate (such as the Windows directory).
1521 // On non-Windows platform, probably just return the empty string.
1522 wxString wxGetOSDirectory()
1523 {
1524 #ifdef __WXWINCE__
1525     return wxString(wxT("\\Windows"));
1526 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1527     wxChar buf[256];
1528     GetWindowsDirectory(buf, 256);
1529     return wxString(buf);
1530 #elif defined(__WXMAC__)
1531     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1532 #else
1533     return wxEmptyString;
1534 #endif
1535 }
1536
1537 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1538 {
1539     size_t len = wxStrlen(pszFileName);
1540
1541     return len && wxIsPathSeparator(pszFileName[len - 1]);
1542 }
1543
1544 // find a file in a list of directories, returns false if not found
1545 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1546 {
1547     // we assume that it's not empty
1548     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1549                  _T("empty file name in wxFindFileInPath"));
1550
1551     // skip path separator in the beginning of the file name if present
1552     if ( wxIsPathSeparator(*pszFile) )
1553         pszFile++;
1554
1555     // copy the path (strtok will modify it)
1556     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1557     wxStrcpy(szPath, pszPath);
1558
1559     wxString strFile;
1560     wxChar *pc, *save_ptr;
1561     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1562           pc != NULL;
1563           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1564     {
1565         // search for the file in this directory
1566         strFile = pc;
1567         if ( !wxEndsWithPathSeparator(pc) )
1568             strFile += wxFILE_SEP_PATH;
1569         strFile += pszFile;
1570
1571         if ( wxFileExists(strFile) ) {
1572             *pStr = strFile;
1573             break;
1574         }
1575     }
1576
1577     // suppress warning about unused variable save_ptr when wxStrtok() is a
1578     // macro which throws away its third argument
1579     save_ptr = pc;
1580
1581     delete [] szPath;
1582
1583     return pc != NULL;  // if true => we breaked from the loop
1584 }
1585
1586 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1587                              wxString *pstrPath,
1588                              wxString *pstrName,
1589                              wxString *pstrExt)
1590 {
1591     // it can be empty, but it shouldn't be NULL
1592     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1593
1594     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1595 }
1596
1597 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1598 {
1599 #if defined(__WXPALMOS__)
1600     return 0;
1601 #elif defined(__WXWINCE__)
1602     FILETIME creationTime, lastAccessTime, lastWriteTime;
1603     HANDLE fileHandle = ::CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
1604         0, FILE_ATTRIBUTE_NORMAL, 0);
1605     if (fileHandle == INVALID_HANDLE_VALUE)
1606         return 0;
1607     else
1608     {
1609         if (GetFileTime(fileHandle, & creationTime, & lastAccessTime, & lastWriteTime))
1610         {
1611             CloseHandle(fileHandle);
1612
1613             wxDateTime dateTime;
1614             FILETIME ftLocal;
1615             if ( !::FileTimeToLocalFileTime(&lastWriteTime, &ftLocal) )
1616             {
1617                 wxLogLastError(_T("FileTimeToLocalFileTime"));
1618             }
1619
1620             SYSTEMTIME st;
1621             if ( !::FileTimeToSystemTime(&ftLocal, &st) )
1622             {
1623                 wxLogLastError(_T("FileTimeToSystemTime"));
1624             }
1625
1626             dateTime.Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
1627                 st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
1628             return dateTime.GetTicks();
1629         }
1630         else
1631             return 0;
1632     }
1633 #else
1634     wxStructStat buf;
1635     wxStat( filename, &buf);
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, wxArrayString& descriptions, wxArrayString& filters)
1647 {
1648     descriptions.Clear();
1649     filters.Clear();
1650
1651     wxString str(filterStr);
1652
1653     wxString description, filter;
1654     int pos = 0;
1655     while( pos != wxNOT_FOUND )
1656     {
1657         pos = str.Find(wxT('|'));
1658         if ( pos == wxNOT_FOUND )
1659         {
1660             // if there are no '|'s at all in the string just take the entire
1661             // string as filter and make description empty for later autocompletion
1662             if ( filters.IsEmpty() )
1663             {
1664                 descriptions.Add(wxEmptyString);
1665                 filters.Add(filterStr);
1666             }
1667             else
1668             {
1669                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1670             }
1671
1672             break;
1673         }
1674
1675         description = str.Left(pos);
1676         str = str.Mid(pos + 1);
1677         pos = str.Find(wxT('|'));
1678         if ( pos == wxNOT_FOUND )
1679         {
1680             filter = str;
1681         }
1682         else
1683         {
1684             filter = str.Left(pos);
1685             str = str.Mid(pos + 1);
1686         }
1687
1688         descriptions.Add(description);
1689         filters.Add(filter);
1690     }
1691
1692 #if defined(__WXMOTIF__)
1693     // split it so there is one wildcard per entry
1694     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1695     {
1696         pos = filters[i].Find(wxT(';'));
1697         if (pos != wxNOT_FOUND)
1698         {
1699             // first split only filters
1700             descriptions.Insert(descriptions[i],i+1);
1701             filters.Insert(filters[i].Mid(pos+1),i+1);
1702             filters[i]=filters[i].Left(pos);
1703
1704             // autoreplace new filter in description with pattern:
1705             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1706             // cause split into:
1707             //     C/C++ Files(*.cpp)|*.cpp
1708             //     C/C++ Files(*.c;*.h)|*.c;*.h
1709             // and next iteration cause another split into:
1710             //     C/C++ Files(*.cpp)|*.cpp
1711             //     C/C++ Files(*.c)|*.c
1712             //     C/C++ Files(*.h)|*.h
1713             for ( size_t k=i;k<i+2;k++ )
1714             {
1715                 pos = descriptions[k].Find(filters[k]);
1716                 if (pos != wxNOT_FOUND)
1717                 {
1718                     wxString before = descriptions[k].Left(pos);
1719                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1720                     pos = before.Find(_T('('),true);
1721                     if (pos>before.Find(_T(')'),true))
1722                     {
1723                         before = before.Left(pos+1);
1724                         before << filters[k];
1725                         pos = after.Find(_T(')'));
1726                         int pos1 = after.Find(_T('('));
1727                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1728                         {
1729                             before << after.Mid(pos);
1730                             descriptions[k] = before;
1731                         }
1732                     }
1733                 }
1734             }
1735         }
1736     }
1737 #endif
1738
1739     // autocompletion
1740     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1741     {
1742         if ( descriptions[j].empty() && !filters[j].empty() )
1743         {
1744             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1745         }
1746     }
1747
1748     return filters.GetCount();
1749 }
1750
1751
1752 //------------------------------------------------------------------------
1753 // wild character routines
1754 //------------------------------------------------------------------------
1755
1756 bool wxIsWild( const wxString& pattern )
1757 {
1758     wxString tmp = pattern;
1759     wxChar *pat = WXSTRINGCAST(tmp);
1760     while (*pat)
1761     {
1762         switch (*pat++)
1763         {
1764         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1765             return true;
1766         case wxT('\\'):
1767             if (!*pat++)
1768                 return false;
1769         }
1770     }
1771     return false;
1772 }
1773
1774 /*
1775 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1776 *
1777 * The match procedure is public domain code (from ircII's reg.c)
1778 */
1779
1780 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1781 {
1782         if (text.empty())
1783         {
1784                 /* Match if both are empty. */
1785                 return pat.empty();
1786         }
1787
1788         const wxChar *m = pat.c_str(),
1789         *n = text.c_str(),
1790         *ma = NULL,
1791         *na = NULL,
1792         *mp = NULL,
1793         *np = NULL;
1794         int just = 0,
1795         pcount = 0,
1796         acount = 0,
1797         count = 0;
1798
1799         if (dot_special && (*n == wxT('.')))
1800         {
1801                 /* Never match so that hidden Unix files
1802                  * are never found. */
1803                 return false;
1804         }
1805
1806         for (;;)
1807         {
1808                 if (*m == wxT('*'))
1809                 {
1810                         ma = ++m;
1811                         na = n;
1812                         just = 1;
1813                         mp = NULL;
1814                         acount = count;
1815                 }
1816                 else if (*m == wxT('?'))
1817                 {
1818                         m++;
1819                         if (!*n++)
1820                         return false;
1821                 }
1822                 else
1823                 {
1824                         if (*m == wxT('\\'))
1825                         {
1826                                 m++;
1827                                 /* Quoting "nothing" is a bad thing */
1828                                 if (!*m)
1829                                 return false;
1830                         }
1831                         if (!*m)
1832                         {
1833                                 /*
1834                                 * If we are out of both strings or we just
1835                                 * saw a wildcard, then we can say we have a
1836                                 * match
1837                                 */
1838                                 if (!*n)
1839                                 return true;
1840                                 if (just)
1841                                 return true;
1842                                 just = 0;
1843                                 goto not_matched;
1844                         }
1845                         /*
1846                         * We could check for *n == NULL at this point, but
1847                         * since it's more common to have a character there,
1848                         * check to see if they match first (m and n) and
1849                         * then if they don't match, THEN we can check for
1850                         * the NULL of n
1851                         */
1852                         just = 0;
1853                         if (*m == *n)
1854                         {
1855                                 m++;
1856                                 if (*n == wxT(' '))
1857                                 mp = NULL;
1858                                 count++;
1859                                 n++;
1860                         }
1861                         else
1862                         {
1863
1864                                 not_matched:
1865
1866                                 /*
1867                                 * If there are no more characters in the
1868                                 * string, but we still need to find another
1869                                 * character (*m != NULL), then it will be
1870                                 * impossible to match it
1871                                 */
1872                                 if (!*n)
1873                                 return false;
1874                                 if (mp)
1875                                 {
1876                                         m = mp;
1877                                         if (*np == wxT(' '))
1878                                         {
1879                                                 mp = NULL;
1880                                                 goto check_percent;
1881                                         }
1882                                         n = ++np;
1883                                         count = pcount;
1884                                 }
1885                                 else
1886                                 check_percent:
1887
1888                                 if (ma)
1889                                 {
1890                                         m = ma;
1891                                         n = ++na;
1892                                         count = acount;
1893                                 }
1894                                 else
1895                                 return false;
1896                         }
1897                 }
1898         }
1899 }
1900
1901 // Return the type of an open file
1902 //
1903 // Some file types on some platforms seem seekable but in fact are not.
1904 // The main use of this function is to allow such cases to be detected
1905 // (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
1906 //
1907 // This is important for the archive streams, which benefit greatly from
1908 // being able to seek on a stream, but which will produce corrupt archives
1909 // if they unknowingly seek on a non-seekable stream.
1910 //
1911 // wxFILE_KIND_DISK is a good catch all return value, since other values
1912 // disable features of the archive streams. Some other value must be returned
1913 // for a file type that appears seekable but isn't.
1914 //
1915 // Known examples:
1916 //   *  Pipes on Windows
1917 //   *  Files on VMS with a record format other than StreamLF
1918 //
1919 wxFileKind wxGetFileKind(int fd)
1920 {
1921 #if defined __WXMSW__ && !defined __WXWINCE__ && defined wxGetOSFHandle
1922     switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
1923     {
1924         case FILE_TYPE_CHAR:
1925             return wxFILE_KIND_TERMINAL;
1926         case FILE_TYPE_DISK:
1927             return wxFILE_KIND_DISK;
1928         case FILE_TYPE_PIPE:
1929             return wxFILE_KIND_PIPE;
1930     }
1931
1932     return wxFILE_KIND_UNKNOWN;
1933
1934 #elif defined(__UNIX__)
1935     if (isatty(fd))
1936         return wxFILE_KIND_TERMINAL;
1937
1938     struct stat st;
1939     fstat(fd, &st);
1940
1941     if (S_ISFIFO(st.st_mode))
1942         return wxFILE_KIND_PIPE;
1943     if (!S_ISREG(st.st_mode))
1944         return wxFILE_KIND_UNKNOWN;
1945
1946     #if defined(__VMS__)
1947         if (st.st_fab_rfm != FAB$C_STMLF)
1948             return wxFILE_KIND_UNKNOWN;
1949     #endif
1950
1951     return wxFILE_KIND_DISK;
1952
1953 #else
1954     #define wxFILEKIND_STUB
1955     (void)fd;
1956     return wxFILE_KIND_DISK;
1957 #endif
1958 }
1959
1960 wxFileKind wxGetFileKind(FILE *fp)
1961 {
1962     // Note: The watcom rtl dll doesn't have fileno (the static lib does).
1963     //       Should be fixed in version 1.4.
1964 #if defined(wxFILEKIND_STUB) || \
1965         (defined(__WATCOMC__) && __WATCOMC__ <= 1230 && defined(__SW_BR))
1966     (void)fp;
1967     return wxFILE_KIND_DISK;
1968 #else
1969     return wxGetFileKind(fileno(fp));
1970 #endif
1971 }
1972
1973 #ifdef __VISUALC__
1974     #pragma warning(default:4706)   // assignment within conditional expression
1975 #endif // VC++