src/common/filefn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        filefn.cpp
   3 // Purpose:     File- and directory-related functions
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "filefn.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26 #include "wx/defs.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #include "wx/utils.h"
  33 #include "wx/intl.h"
  34 #include "wx/file.h" // This does include filefn.h
  35 #include "wx/filename.h"
  36 #include "wx/dir.h"
  37
  38 // there are just too many of those...
  39 #ifdef __VISUALC__
  40     #pragma warning(disable:4706)   // assignment within conditional expression
  41 #endif // VC++
  42
  43 #include <ctype.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #if !defined(__WATCOMC__)
  48     #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  49         #include <errno.h>
  50     #endif
  51 #endif
  52
  53 #if defined(__WXMAC__)
  54     #include  "wx/mac/private.h"  // includes mac headers
  55 #endif
  56
  57 #include "wx/log.h"
  58
  59 #ifdef __WINDOWS__
  60     #include "wx/msw/private.h"
  61     #include "wx/msw/mslu.h"
  62
  63     // sys/cygwin.h is needed for cygwin_conv_to_full_win32_path()
  64     //
  65     // note that it must be included after <windows.h>
  66     #ifdef __GNUWIN32__
  67         #ifdef __CYGWIN__
  68             #include <sys/cygwin.h>
  69         #endif
  70     #endif // __GNUWIN32__
  71
  72     // io.h is needed for _get_osfhandle()
  73     // Already included by filefn.h for many Windows compilers
  74     #if defined __MWERKS__ || defined __CYGWIN__
  75         #include <io.h>
  76     #endif
  77 #endif // __WINDOWS__
  78
  79 #if defined(__VMS__)
  80     #include <fab.h>
  81 #endif
  82
  83 // TODO: Borland probably has _wgetcwd as well?
  84 #ifdef _MSC_VER
  85     #define HAVE_WGETCWD
  86 #endif
  87
  88 // ----------------------------------------------------------------------------
  89 // constants
  90 // ----------------------------------------------------------------------------
  91
  92 #ifndef _MAXPATHLEN
  93     #define _MAXPATHLEN 1024
  94 #endif
  95
  96 #ifdef __WXMAC__
  97 #    include "MoreFilesX.h"
  98 #endif
  99
 100 // ----------------------------------------------------------------------------
 101 // private globals
 102 // ----------------------------------------------------------------------------
 103
 104 // MT-FIXME: get rid of this horror and all code using it
 105 static wxChar wxFileFunctionsBuffer[4*_MAXPATHLEN];
 106
 107 #if defined(__VISAGECPP__) && __IBMCPP__ >= 400
 108 //
 109 // VisualAge C++ V4.0 cannot have any external linkage const decs
 110 // in headers included by more than one primary source
 111 //
 112 const int wxInvalidOffset = -1;
 113 #endif
 114
 115 // ----------------------------------------------------------------------------
 116 // macros
 117 // ----------------------------------------------------------------------------
 118
 119 // we need to translate Mac filenames before passing them to OS functions
 120 #define OS_FILENAME(s) (s.fn_str())
 121
 122 // ============================================================================
 123 // implementation
 124 // ============================================================================
 125
 126 #ifdef wxNEED_WX_UNISTD_H
 127
 128 WXDLLEXPORT int wxStat( const wxChar *file_name, wxStructStat *buf )
 129 {
 130     return stat( wxConvFile.cWX2MB( file_name ), buf );
 131 }
 132
 133 WXDLLEXPORT int wxAccess( const wxChar *pathname, int mode )
 134 {
 135     return access( wxConvFile.cWX2MB( pathname ), mode );
 136 }
 137
 138 WXDLLEXPORT int wxOpen( const wxChar *pathname, int flags, mode_t mode )
 139 {
 140     return open( wxConvFile.cWX2MB( pathname ), flags, mode );
 141 }
 142
 143 #endif
 144    // wxNEED_WX_UNISTD_H
 145
 146 // ----------------------------------------------------------------------------
 147 // wxPathList
 148 // ----------------------------------------------------------------------------
 149
 150 // IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
 151
 152 static inline wxChar* MYcopystring(const wxString& s)
 153 {
 154     wxChar* copy = new wxChar[s.length() + 1];
 155     return wxStrcpy(copy, s.c_str());
 156 }
 157
 158 static inline wxChar* MYcopystring(const wxChar* s)
 159 {
 160     wxChar* copy = new wxChar[wxStrlen(s) + 1];
 161     return wxStrcpy(copy, s);
 162 }
 163
 164 void wxPathList::Add (const wxString& path)
 165 {
 166     wxStringList::Add (WXSTRINGCAST path);
 167 }
 168
 169 // Add paths e.g. from the PATH environment variable
 170 void wxPathList::AddEnvList (const wxString& WXUNUSED_IN_WINCE(envVariable))
 171 {
 172     // No environment variables on WinCE
 173 #ifndef __WXWINCE__
 174     static const wxChar PATH_TOKS[] =
 175 #if defined(__WINDOWS__) || defined(__OS2__)
 176         /*
 177         The space has been removed from the tokenizers, otherwise a
 178         path such as "C:\Program Files" would be split into 2 paths:
 179         "C:\Program" and "Files"
 180         */
 181 //        wxT(" ;"); // Don't separate with colon in DOS (used for drive)
 182         wxT(";"); // Don't separate with colon in DOS (used for drive)
 183 #else
 184         wxT(" :;");
 185 #endif
 186
 187     wxString val ;
 188     if (wxGetEnv (WXSTRINGCAST envVariable, &val))
 189     {
 190         wxChar *s = MYcopystring (val);
 191         wxChar *save_ptr, *token = wxStrtok (s, PATH_TOKS, &save_ptr);
 192
 193         if (token)
 194         {
 195             Add(token);
 196             while (token)
 197             {
 198                 if ( (token = wxStrtok ((wxChar *) NULL, PATH_TOKS, &save_ptr))
 199                     != NULL )
 200                 {
 201                     Add(token);
 202                 }
 203             }
 204         }
 205
 206         // suppress warning about unused variable save_ptr when wxStrtok() is a
 207         // macro which throws away its third argument
 208         save_ptr = token;
 209
 210         delete [] s;
 211     }
 212 #endif // !__WXWINCE__
 213 }
 214
 215 // Given a full filename (with path), ensure that that file can
 216 // be accessed again USING FILENAME ONLY by adding the path
 217 // to the list if not already there.
 218 void wxPathList::EnsureFileAccessible (const wxString& path)
 219 {
 220     wxString path_only(wxPathOnly(path));
 221     if ( !path_only.empty() )
 222     {
 223         if ( !Member(path_only) )
 224             Add(path_only);
 225     }
 226 }
 227
 228 bool wxPathList::Member (const wxString& path)
 229 {
 230   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 231   {
 232       wxString path2( node->GetData() );
 233       if (
 234 #if defined(__WINDOWS__) || defined(__OS2__) || defined(__VMS__) || defined(__WXMAC__)
 235       // Case INDEPENDENT
 236           path.CompareTo (path2, wxString::ignoreCase) == 0
 237 #else
 238       // Case sensitive File System
 239           path.CompareTo (path2) == 0
 240 #endif
 241         )
 242         return true;
 243   }
 244   return false;
 245 }
 246
 247 wxString wxPathList::FindValidPath (const wxString& file)
 248 {
 249   if (wxFileExists (wxExpandPath(wxFileFunctionsBuffer, file)))
 250     return wxString(wxFileFunctionsBuffer);
 251
 252   wxChar buf[_MAXPATHLEN];
 253   wxStrcpy(buf, wxFileFunctionsBuffer);
 254
 255   wxChar *filename = wxIsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (wxChar *)buf;
 256
 257   for (wxStringList::compatibility_iterator node = GetFirst(); node; node = node->GetNext())
 258     {
 259       const wxChar *path = node->GetData();
 260       wxStrcpy (wxFileFunctionsBuffer, path);
 261       wxChar ch = wxFileFunctionsBuffer[wxStrlen(wxFileFunctionsBuffer)-1];
 262       if (ch != wxT('\\') && ch != wxT('/'))
 263         wxStrcat (wxFileFunctionsBuffer, wxT("/"));
 264       wxStrcat (wxFileFunctionsBuffer, filename);
 265 #ifdef __WINDOWS__
 266       wxUnix2DosFilename (wxFileFunctionsBuffer);
 267 #endif
 268       if (wxFileExists (wxFileFunctionsBuffer))
 269       {
 270         return wxString(wxFileFunctionsBuffer);        // Found!
 271       }
 272     }                                // for()
 273
 274   return wxEmptyString;                    // Not found
 275 }
 276
 277 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 278 {
 279     wxString f = FindValidPath(file);
 280     if ( f.empty() || wxIsAbsolutePath(f) )
 281         return f;
 282
 283     wxString buf;
 284     wxGetWorkingDirectory(wxStringBuffer(buf, _MAXPATHLEN), _MAXPATHLEN);
 285
 286     if ( !wxEndsWithPathSeparator(buf) )
 287     {
 288         buf += wxFILE_SEP_PATH;
 289     }
 290     buf += f;
 291
 292     return buf;
 293 }
 294
 295 bool
 296 wxFileExists (const wxString& filename)
 297 {
 298 #if defined(__WXPALMOS__)
 299     return false;
 300 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
 301     // we must use GetFileAttributes() instead of the ANSI C functions because
 302     // it can cope with network (UNC) paths unlike them
 303     DWORD ret = ::GetFileAttributes(filename);
 304
 305     return (ret != (DWORD)-1) && !(ret & FILE_ATTRIBUTE_DIRECTORY);
 306 #else // !__WIN32__
 307     wxStructStat st;
 308 #ifndef wxNEED_WX_UNISTD_H
 309     return wxStat( filename.fn_str() , &st) == 0 && (st.st_mode & S_IFREG);
 310 #else
 311     return wxStat( filename , &st) == 0 && (st.st_mode & S_IFREG);
 312 #endif
 313 #endif // __WIN32__/!__WIN32__
 314 }
 315
 316 bool
 317 wxIsAbsolutePath (const wxString& filename)
 318 {
 319     if (!filename.empty())
 320     {
 321 #if defined(__WXMAC__) && !defined(__DARWIN__)
 322         // Classic or Carbon CodeWarrior like
 323         // Carbon with Apple DevTools is Unix like
 324
 325         // This seems wrong to me, but there is no fix. since
 326         // "MacOS:MyText.txt" is absolute whereas "MyDir:MyText.txt"
 327         // is not. Or maybe ":MyDir:MyText.txt" has to be used? RR.
 328         if (filename.Find(':') != wxNOT_FOUND && filename[0] != ':')
 329             return true ;
 330 #else
 331         // Unix like or Windows
 332         if (filename[0] == wxT('/'))
 333             return true;
 334 #endif
 335 #ifdef __VMS__
 336         if ((filename[0] == wxT('[') && filename[1] != wxT('.')))
 337             return true;
 338 #endif
 339 #if defined(__WINDOWS__) || defined(__OS2__)
 340         // MSDOS like
 341         if (filename[0] == wxT('\\') || (wxIsalpha (filename[0]) && filename[1] == wxT(':')))
 342             return true;
 343 #endif
 344     }
 345     return false ;
 346 }
 347
 348 /*
 349  * Strip off any extension (dot something) from end of file,
 350  * IF one exists. Inserts zero into buffer.
 351  *
 352  */
 353
 354 void wxStripExtension(wxChar *buffer)
 355 {
 356     int len = wxStrlen(buffer);
 357     int i = len-1;
 358     while (i > 0)
 359     {
 360         if (buffer[i] == wxT('.'))
 361         {
 362             buffer[i] = 0;
 363             break;
 364         }
 365         i --;
 366     }
 367 }
 368
 369 void wxStripExtension(wxString& buffer)
 370 {
 371     //RN:  Be careful about the handling the case where
 372     //buffer.Length() == 0
 373     for(size_t i = buffer.Length() - 1; i != wxString::npos; --i)
 374     {
 375         if (buffer.GetChar(i) == wxT('.'))
 376         {
 377           buffer = buffer.Left(i);
 378           break;
 379         }
 380     }
 381 }
 382
 383 // Destructive removal of /./ and /../ stuff
 384 wxChar *wxRealPath (wxChar *path)
 385 {
 386 #ifdef __WXMSW__
 387   static const wxChar SEP = wxT('\\');
 388   wxUnix2DosFilename(path);
 389 #else
 390   static const wxChar SEP = wxT('/');
 391 #endif
 392   if (path[0] && path[1]) {
 393     /* MATTHEW: special case "/./x" */
 394     wxChar *p;
 395     if (path[2] == SEP && path[1] == wxT('.'))
 396       p = &path[0];
 397     else
 398       p = &path[2];
 399     for (; *p; p++)
 400       {
 401         if (*p == SEP)
 402           {
 403             if (p[1] == wxT('.') && p[2] == wxT('.') && (p[3] == SEP || p[3] == wxT('\0')))
 404               {
 405                 wxChar *q;
 406                 for (q = p - 1; q >= path && *q != SEP; q--)
 407                 {
 408                     // Empty
 409                 }
 410
 411                 if (q[0] == SEP && (q[1] != wxT('.') || q[2] != wxT('.') || q[3] != SEP)
 412                     && (q - 1 <= path || q[-1] != SEP))
 413                   {
 414                     wxStrcpy (q, p + 3);
 415                     if (path[0] == wxT('\0'))
 416                       {
 417                         path[0] = SEP;
 418                         path[1] = wxT('\0');
 419                       }
 420 #if defined(__WXMSW__) || defined(__OS2__)
 421                     /* Check that path[2] is NULL! */
 422                     else if (path[1] == wxT(':') && !path[2])
 423                       {
 424                         path[2] = SEP;
 425                         path[3] = wxT('\0');
 426                       }
 427 #endif
 428                     p = q - 1;
 429                   }
 430               }
 431             else if (p[1] == wxT('.') && (p[2] == SEP || p[2] == wxT('\0')))
 432               wxStrcpy (p, p + 2);
 433           }
 434       }
 435   }
 436   return path;
 437 }
 438
 439 // Must be destroyed
 440 wxChar *wxCopyAbsolutePath(const wxString& filename)
 441 {
 442   if (filename.empty())
 443     return (wxChar *) NULL;
 444
 445   if (! wxIsAbsolutePath(wxExpandPath(wxFileFunctionsBuffer, filename))) {
 446     wxChar  buf[_MAXPATHLEN];
 447     buf[0] = wxT('\0');
 448     wxGetWorkingDirectory(buf, WXSIZEOF(buf));
 449     wxChar ch = buf[wxStrlen(buf) - 1];
 450 #ifdef __WXMSW__
 451     if (ch != wxT('\\') && ch != wxT('/'))
 452         wxStrcat(buf, wxT("\\"));
 453 #else
 454     if (ch != wxT('/'))
 455         wxStrcat(buf, wxT("/"));
 456 #endif
 457     wxStrcat(buf, wxFileFunctionsBuffer);
 458     return MYcopystring( wxRealPath(buf) );
 459   }
 460   return MYcopystring( wxFileFunctionsBuffer );
 461 }
 462
 463 /*-
 464  Handles:
 465    ~/ => home dir
 466    ~user/ => user's home dir
 467    If the environment variable a = "foo" and b = "bar" then:
 468    Unix:
 469         $a        =>        foo
 470         $a$b        =>        foobar
 471         $a.c        =>        foo.c
 472         xxx$a        =>        xxxfoo
 473         ${a}!        =>        foo!
 474         $(b)!        =>        bar!
 475         \$a        =>        \$a
 476    MSDOS:
 477         $a        ==>        $a
 478         $(a)        ==>        foo
 479         $(a)$b        ==>        foo$b
 480         $(a)$(b)==>        foobar
 481         test.$$        ==>        test.$$
 482  */
 483
 484 /* input name in name, pathname output to buf. */
 485
 486 wxChar *wxExpandPath(wxChar *buf, const wxChar *name)
 487 {
 488     register wxChar *d, *s, *nm;
 489     wxChar          lnm[_MAXPATHLEN];
 490     int             q;
 491
 492     // Some compilers don't like this line.
 493 //    const wxChar    trimchars[] = wxT("\n \t");
 494
 495     wxChar      trimchars[4];
 496     trimchars[0] = wxT('\n');
 497     trimchars[1] = wxT(' ');
 498     trimchars[2] = wxT('\t');
 499     trimchars[3] = 0;
 500
 501 #ifdef __WXMSW__
 502     const wxChar     SEP = wxT('\\');
 503 #else
 504     const wxChar     SEP = wxT('/');
 505 #endif
 506     buf[0] = wxT('\0');
 507     if (name == NULL || *name == wxT('\0'))
 508         return buf;
 509     nm = MYcopystring(name); // Make a scratch copy
 510     wxChar *nm_tmp = nm;
 511
 512     /* Skip leading whitespace and cr */
 513     while (wxStrchr((wxChar *)trimchars, *nm) != NULL)
 514         nm++;
 515     /* And strip off trailing whitespace and cr */
 516     s = nm + (q = wxStrlen(nm)) - 1;
 517     while (q-- && wxStrchr((wxChar *)trimchars, *s) != NULL)
 518         *s = wxT('\0');
 519
 520     s = nm;
 521     d = lnm;
 522 #ifdef __WXMSW__
 523     q = FALSE;
 524 #else
 525     q = nm[0] == wxT('\\') && nm[1] == wxT('~');
 526 #endif
 527
 528     /* Expand inline environment variables */
 529 #ifdef __VISAGECPP__
 530     while (*d)
 531     {
 532       *d++ = *s;
 533       if(*s == wxT('\\'))
 534       {
 535         *(d - 1) = *++s;
 536         if (*d)
 537         {
 538           s++;
 539           continue;
 540         }
 541         else
 542            break;
 543       }
 544       else
 545 #else
 546     while ((*d++ = *s) != 0) {
 547 #  ifndef __WXMSW__
 548         if (*s == wxT('\\')) {
 549             if ((*(d - 1) = *++s)) {
 550                 s++;
 551                 continue;
 552             } else
 553                 break;
 554         } else
 555 #  endif
 556 #endif
 557             // No env variables on WinCE
 558 #ifndef __WXWINCE__
 559 #ifdef __WXMSW__
 560         if (*s++ == wxT('$') && (*s == wxT('{') || *s == wxT(')')))
 561 #else
 562         if (*s++ == wxT('$'))
 563 #endif
 564         {
 565             register wxChar  *start = d;
 566             register int     braces = (*s == wxT('{') || *s == wxT('('));
 567             register wxChar  *value;
 568             while ((*d++ = *s) != 0)
 569                 if (braces ? (*s == wxT('}') || *s == wxT(')')) : !(wxIsalnum(*s) || *s == wxT('_')) )
 570                     break;
 571                 else
 572                     s++;
 573             *--d = 0;
 574             value = wxGetenv(braces ? start + 1 : start);
 575             if (value) {
 576                 for ((d = start - 1); (*d++ = *value++) != 0;)
 577                 {
 578                     // Empty
 579                 }
 580
 581                 d--;
 582                 if (braces && *s)
 583                     s++;
 584             }
 585         }
 586 #endif
 587         // __WXWINCE__
 588     }
 589
 590     /* Expand ~ and ~user */
 591     nm = lnm;
 592     if (nm[0] == wxT('~') && !q)
 593     {
 594         /* prefix ~ */
 595         if (nm[1] == SEP || nm[1] == 0)
 596         {        /* ~/filename */
 597         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 598             if ((s = WXSTRINGCAST wxGetUserHome(wxEmptyString)) != NULL) {
 599                 if (*++nm)
 600                     nm++;
 601             }
 602         } else
 603         {                /* ~user/filename */
 604             register wxChar  *nnm;
 605             register wxChar  *home;
 606             for (s = nm; *s && *s != SEP; s++)
 607             {
 608                 // Empty
 609             }
 610             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 611             was_sep = (*s == SEP);
 612             nnm = *s ? s + 1 : s;
 613             *s = 0;
 614         // FIXME: wxGetUserHome could return temporary storage in Unicode mode
 615             if ((home = WXSTRINGCAST wxGetUserHome(wxString(nm + 1))) == NULL) {
 616                if (was_sep) /* replace only if it was there: */
 617                    *s = SEP;
 618                 s = NULL;
 619             } else {
 620                 nm = nnm;
 621                 s = home;
 622             }
 623         }
 624     }
 625
 626     d = buf;
 627     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 628         /* Copy home dir */
 629         while (wxT('\0') != (*d++ = *s++))
 630           /* loop */;
 631         // Handle root home
 632         if (d - 1 > buf && *(d - 2) != SEP)
 633           *(d - 1) = SEP;
 634     }
 635     s = nm;
 636     while ((*d++ = *s++) != 0)
 637     {
 638         // Empty
 639     }
 640     delete[] nm_tmp; // clean up alloc
 641     /* Now clean up the buffer */
 642     return wxRealPath(buf);
 643 }
 644
 645 /* Contract Paths to be build upon an environment variable
 646    component:
 647
 648    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 649
 650    The call wxExpandPath can convert these back!
 651  */
 652 wxChar *
 653 wxContractPath (const wxString& filename,
 654                 const wxString& WXUNUSED_IN_WINCE(envname),
 655                 const wxString& user)
 656 {
 657   static wxChar dest[_MAXPATHLEN];
 658
 659   if (filename.empty())
 660     return (wxChar *) NULL;
 661
 662   wxStrcpy (dest, WXSTRINGCAST filename);
 663 #ifdef __WXMSW__
 664   wxUnix2DosFilename(dest);
 665 #endif
 666
 667   // Handle environment
 668   const wxChar *val;
 669 #ifndef __WXWINCE__
 670   wxChar *tcp;
 671   if (!envname.empty() && (val = wxGetenv (WXSTRINGCAST envname)) != NULL &&
 672      (tcp = wxStrstr (dest, val)) != NULL)
 673     {
 674         wxStrcpy (wxFileFunctionsBuffer, tcp + wxStrlen (val));
 675         *tcp++ = wxT('$');
 676         *tcp++ = wxT('{');
 677         wxStrcpy (tcp, WXSTRINGCAST envname);
 678         wxStrcat (tcp, wxT("}"));
 679         wxStrcat (tcp, wxFileFunctionsBuffer);
 680     }
 681 #endif
 682
 683   // Handle User's home (ignore root homes!)
 684   val = wxGetUserHome (user);
 685   if (!val)
 686     return dest;
 687
 688   const size_t len = wxStrlen(val);
 689   if (len <= 2)
 690     return dest;
 691
 692   if (wxStrncmp(dest, val, len) == 0)
 693   {
 694     wxStrcpy(wxFileFunctionsBuffer, wxT("~"));
 695     if (!user.empty())
 696            wxStrcat(wxFileFunctionsBuffer, (const wxChar*) user);
 697     wxStrcat(wxFileFunctionsBuffer, dest + len);
 698     wxStrcpy (dest, wxFileFunctionsBuffer);
 699   }
 700
 701   return dest;
 702 }
 703
 704 // Return just the filename, not the path (basename)
 705 wxChar *wxFileNameFromPath (wxChar *path)
 706 {
 707     wxString p = path;
 708     wxString n = wxFileNameFromPath(p);
 709
 710     return path + p.length() - n.length();
 711 }
 712
 713 wxString wxFileNameFromPath (const wxString& path)
 714 {
 715     wxString name, ext;
 716     wxFileName::SplitPath(path, NULL, &name, &ext);
 717
 718     wxString fullname = name;
 719     if ( !ext.empty() )
 720     {
 721         fullname << wxFILE_SEP_EXT << ext;
 722     }
 723
 724     return fullname;
 725 }
 726
 727 // Return just the directory, or NULL if no directory
 728 wxChar *
 729 wxPathOnly (wxChar *path)
 730 {
 731     if (path && *path)
 732     {
 733         static wxChar buf[_MAXPATHLEN];
 734
 735         // Local copy
 736         wxStrcpy (buf, path);
 737
 738         int l = wxStrlen(path);
 739         int i = l - 1;
 740
 741         // Search backward for a backward or forward slash
 742         while (i > -1)
 743         {
 744 #if defined(__WXMAC__) && !defined(__DARWIN__)
 745             // Classic or Carbon CodeWarrior like
 746             // Carbon with Apple DevTools is Unix like
 747             if (path[i] == wxT(':') )
 748             {
 749                 buf[i] = 0;
 750                 return buf;
 751             }
 752 #else
 753             // Unix like or Windows
 754             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 755             {
 756                 buf[i] = 0;
 757                 return buf;
 758             }
 759 #endif
 760 #ifdef __VMS__
 761             if (path[i] == wxT(']'))
 762             {
 763                 buf[i+1] = 0;
 764                 return buf;
 765             }
 766 #endif
 767             i --;
 768         }
 769
 770 #if defined(__WXMSW__) || defined(__OS2__)
 771         // Try Drive specifier
 772         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 773         {
 774             // A:junk --> A:. (since A:.\junk Not A:\junk)
 775             buf[2] = wxT('.');
 776             buf[3] = wxT('\0');
 777             return buf;
 778         }
 779 #endif
 780     }
 781     return (wxChar *) NULL;
 782 }
 783
 784 // Return just the directory, or NULL if no directory
 785 wxString wxPathOnly (const wxString& path)
 786 {
 787     if (!path.empty())
 788     {
 789         wxChar buf[_MAXPATHLEN];
 790
 791         // Local copy
 792         wxStrcpy (buf, WXSTRINGCAST path);
 793
 794         int l = path.Length();
 795         int i = l - 1;
 796
 797         // Search backward for a backward or forward slash
 798         while (i > -1)
 799         {
 800 #if defined(__WXMAC__) && !defined(__DARWIN__)
 801             // Classic or Carbon CodeWarrior like
 802             // Carbon with Apple DevTools is Unix like
 803             if (path[i] == wxT(':') )
 804             {
 805                 buf[i] = 0;
 806                 return wxString(buf);
 807             }
 808 #else
 809             // Unix like or Windows
 810             if (path[i] == wxT('/') || path[i] == wxT('\\'))
 811             {
 812                 // Don't return an empty string
 813                 if (i == 0)
 814                     i ++;
 815                 buf[i] = 0;
 816                 return wxString(buf);
 817             }
 818 #endif
 819 #ifdef __VMS__
 820             if (path[i] == wxT(']'))
 821             {
 822                 buf[i+1] = 0;
 823                 return wxString(buf);
 824             }
 825 #endif
 826             i --;
 827         }
 828
 829 #if defined(__WXMSW__) || defined(__OS2__)
 830         // Try Drive specifier
 831         if (wxIsalpha (buf[0]) && buf[1] == wxT(':'))
 832         {
 833             // A:junk --> A:. (since A:.\junk Not A:\junk)
 834             buf[2] = wxT('.');
 835             buf[3] = wxT('\0');
 836             return wxString(buf);
 837         }
 838 #endif
 839     }
 840     return wxEmptyString;
 841 }
 842
 843 // Utility for converting delimiters in DOS filenames to UNIX style
 844 // and back again - or we get nasty problems with delimiters.
 845 // Also, convert to lower case, since case is significant in UNIX.
 846
 847 #if defined(__WXMAC__)
 848
 849 #if TARGET_API_MAC_OSX
 850 #define kDefaultPathStyle kCFURLPOSIXPathStyle
 851 #else
 852 #define kDefaultPathStyle kCFURLHFSPathStyle
 853 #endif
 854
 855 wxString wxMacFSRefToPath( const FSRef *fsRef , CFStringRef additionalPathComponent )
 856 {
 857     CFURLRef fullURLRef;
 858     fullURLRef = CFURLCreateFromFSRef(NULL, fsRef);
 859     if ( additionalPathComponent )
 860     {
 861         CFURLRef parentURLRef = fullURLRef ;
 862         fullURLRef = CFURLCreateCopyAppendingPathComponent(NULL, parentURLRef,
 863             additionalPathComponent,false);
 864         CFRelease( parentURLRef ) ;
 865     }
 866     CFStringRef cfString = CFURLCopyFileSystemPath(fullURLRef, kDefaultPathStyle);
 867     CFRelease( fullURLRef ) ;
 868     return wxMacCFStringHolder(cfString).AsString(wxLocale::GetSystemEncoding());
 869 }
 870
 871 OSStatus wxMacPathToFSRef( const wxString&path , FSRef *fsRef )
 872 {
 873     OSStatus err = noErr ;
 874     CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault, wxMacCFStringHolder(path ,wxLocale::GetSystemEncoding() ) , kDefaultPathStyle, false);
 875     if ( NULL != url )
 876     {
 877         if ( CFURLGetFSRef(url, fsRef) == false )
 878             err = fnfErr ;
 879         CFRelease( url ) ;
 880     }
 881     else
 882     {
 883         err = fnfErr ;
 884     }
 885     return err ;
 886 }
 887
 888 wxString wxMacHFSUniStrToString( ConstHFSUniStr255Param uniname )
 889 {
 890     CFStringRef cfname = CFStringCreateWithCharacters( kCFAllocatorDefault,
 891                                                       uniname->unicode,
 892                                                       uniname->length );
 893     return wxMacCFStringHolder(cfname).AsString() ;
 894 }
 895
 896 wxString wxMacFSSpec2MacFilename( const FSSpec *spec )
 897 {
 898     FSRef fsRef ;
 899     if ( FSpMakeFSRef( spec , &fsRef) == noErr )
 900     {
 901         return wxMacFSRefToPath( &fsRef ) ;
 902     }
 903     return wxEmptyString ;
 904 }
 905
 906 void wxMacFilename2FSSpec( const wxString& path , FSSpec *spec )
 907 {
 908     OSStatus err = noErr ;
 909     FSRef fsRef ;
 910     wxMacPathToFSRef( path , &fsRef ) ;
 911     err = FSRefMakeFSSpec( &fsRef , spec ) ;
 912 }
 913
 914 #endif // __WXMAC__
 915
 916 void
 917 wxDos2UnixFilename (wxChar *s)
 918 {
 919   if (s)
 920     while (*s)
 921       {
 922         if (*s == _T('\\'))
 923           *s = _T('/');
 924 #ifdef __WXMSW__
 925         else
 926           *s = (wxChar)wxTolower (*s);        // Case INDEPENDENT
 927 #endif
 928         s++;
 929       }
 930 }
 931
 932 void
 933 #if defined(__WXMSW__) || defined(__OS2__)
 934 wxUnix2DosFilename (wxChar *s)
 935 #else
 936 wxUnix2DosFilename (wxChar *WXUNUSED(s) )
 937 #endif
 938 {
 939 // Yes, I really mean this to happen under DOS only! JACS
 940 #if defined(__WXMSW__) || defined(__OS2__)
 941   if (s)
 942     while (*s)
 943       {
 944         if (*s == wxT('/'))
 945           *s = wxT('\\');
 946         s++;
 947       }
 948 #endif
 949 }
 950
 951 // Concatenate two files to form third
 952 bool
 953 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 954 {
 955 #if wxUSE_FILE
 956
 957     wxFile in1(file1), in2(file2);
 958     wxTempFile out(file3);
 959
 960     if ( !in1.IsOpened() || !in2.IsOpened() || !out.IsOpened() )
 961         return false;
 962
 963     ssize_t ofs;
 964     unsigned char buf[1024];
 965
 966     for( int i=0; i<2; i++)
 967     {
 968         wxFile *in = i==0 ? &in1 : &in2;
 969         do{
 970             if ( (ofs = in->Read(buf,WXSIZEOF(buf))) == wxInvalidOffset ) return false;
 971             if ( ofs > 0 )
 972                 if ( !out.Write(buf,ofs) )
 973                     return false;
 974         } while ( ofs == (ssize_t)WXSIZEOF(buf) );
 975     }
 976
 977     return out.Commit();
 978
 979 #else
 980
 981     wxUnusedVar(file1);
 982     wxUnusedVar(file2);
 983     wxUnusedVar(file3);
 984     return false;
 985
 986 #endif
 987 }
 988
 989 // Copy files
 990 bool
 991 wxCopyFile (const wxString& file1, const wxString& file2, bool overwrite)
 992 {
 993 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
 994     // CopyFile() copies file attributes and modification time too, so use it
 995     // instead of our code if available
 996     //
 997     // NB: 3rd parameter is bFailIfExists i.e. the inverse of overwrite
 998     if ( !::CopyFile(file1, file2, !overwrite) )
 999     {
1000         wxLogSysError(_("Failed to copy the file '%s' to '%s'"),
1001                       file1.c_str(), file2.c_str());
1002
1003         return false;
1004     }
1005 #elif defined(__OS2__)
1006     if ( ::DosCopy((PSZ)file1.c_str(), (PSZ)file2.c_str(), overwrite ? DCPY_EXISTING : 0) != 0 )
1007         return false;
1008 #elif defined(__PALMOS__)
1009     // TODO with http://www.palmos.com/dev/support/docs/protein_books/Memory_Databases_Files/
1010     return false;
1011 #elif wxUSE_FILE // !Win32
1012
1013     wxStructStat fbuf;
1014     // get permissions of file1
1015     if ( wxStat( file1.c_str(), &fbuf) != 0 )
1016     {
1017         // the file probably doesn't exist or we haven't the rights to read
1018         // from it anyhow
1019         wxLogSysError(_("Impossible to get permissions for file '%s'"),
1020                       file1.c_str());
1021         return false;
1022     }
1023
1024     // open file1 for reading
1025     wxFile fileIn(file1, wxFile::read);
1026     if ( !fileIn.IsOpened() )
1027         return false;
1028
1029     // remove file2, if it exists. This is needed for creating
1030     // file2 with the correct permissions in the next step
1031     if ( wxFileExists(file2)  && (!overwrite || !wxRemoveFile(file2)))
1032     {
1033         wxLogSysError(_("Impossible to overwrite the file '%s'"),
1034                       file2.c_str());
1035         return false;
1036     }
1037
1038     // reset the umask as we want to create the file with exactly the same
1039     // permissions as the original one
1040     wxCHANGE_UMASK(0);
1041
1042     // create file2 with the same permissions than file1 and open it for
1043     // writing
1044
1045     wxFile fileOut;
1046     if ( !fileOut.Create(file2, overwrite, fbuf.st_mode & 0777) )
1047         return false;
1048
1049     // copy contents of file1 to file2
1050     char buf[4096];
1051     size_t count;
1052     for ( ;; )
1053     {
1054         count = fileIn.Read(buf, WXSIZEOF(buf));
1055         if ( fileIn.Error() )
1056             return false;
1057
1058         // end of file?
1059         if ( !count )
1060             break;
1061
1062         if ( fileOut.Write(buf, count) < count )
1063             return false;
1064     }
1065
1066     // we can expect fileIn to be closed successfully, but we should ensure
1067     // that fileOut was closed as some write errors (disk full) might not be
1068     // detected before doing this
1069     if ( !fileIn.Close() || !fileOut.Close() )
1070         return false;
1071
1072 #if !defined(__VISAGECPP__) && !defined(__WXMAC__) || defined(__UNIX__)
1073     // no chmod in VA.  Should be some permission API for HPFS386 partitions
1074     // however
1075     if ( chmod(OS_FILENAME(file2), fbuf.st_mode) != 0 )
1076     {
1077         wxLogSysError(_("Impossible to set permissions for the file '%s'"),
1078                       file2.c_str());
1079         return false;
1080     }
1081 #endif // OS/2 || Mac
1082
1083 #else // !Win32 && ! wxUSE_FILE
1084
1085     // impossible to simulate with wxWidgets API
1086     wxUnusedVar(file1);
1087     wxUnusedVar(file2);
1088     wxUnusedVar(overwrite);
1089     return false;
1090
1091 #endif // __WXMSW__ && __WIN32__
1092
1093     return true;
1094 }
1095
1096 bool
1097 wxRenameFile (const wxString& file1, const wxString& file2)
1098 {
1099 #if !defined(__WXWINCE__) && !defined(__WXPALMOS__)
1100     // Normal system call
1101   if ( wxRename (file1, file2) == 0 )
1102     return true;
1103 #endif
1104
1105   // Try to copy
1106   if (wxCopyFile(file1, file2)) {
1107     wxRemoveFile(file1);
1108     return true;
1109   }
1110   // Give up
1111   return false;
1112 }
1113
1114 bool wxRemoveFile(const wxString& file)
1115 {
1116 #if defined(__VISUALC__) \
1117  || defined(__BORLANDC__) \
1118  || defined(__WATCOMC__) \
1119  || defined(__DMC__) \
1120  || defined(__GNUWIN32__) \
1121  || (defined(__MWERKS__) && defined(__MSL__))
1122     int res = wxRemove(file);
1123 #elif defined(__WXMAC__)
1124     int res = unlink(wxFNCONV(file));
1125 #elif defined(__WXPALMOS__)
1126     int res = 1;
1127     // TODO with VFSFileDelete()
1128 #else
1129     int res = unlink(OS_FILENAME(file));
1130 #endif
1131
1132     return res == 0;
1133 }
1134
1135 bool wxMkdir(const wxString& dir, int perm)
1136 {
1137 #if defined(__WXPALMOS__)
1138     return false;
1139 #elif defined(__WXMAC__) && !defined(__UNIX__)
1140     return (mkdir( wxFNCONV(dir) , 0 ) == 0);
1141 #else // !Mac
1142     const wxChar *dirname = dir.c_str();
1143
1144     // assume mkdir() has 2 args on non Windows-OS/2 platforms and on Windows too
1145     // for the GNU compiler
1146 #if (!(defined(__WXMSW__) || defined(__OS2__) || defined(__DOS__))) || (defined(__GNUWIN32__) && !defined(__MINGW32__)) || defined(__WINE__) || defined(__WXMICROWIN__)
1147   #if defined(MSVCRT)
1148     wxUnusedVar(perm);
1149     if ( mkdir(wxFNCONV(dirname)) != 0 )
1150   #else
1151     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1152   #endif
1153 #elif defined(__OS2__)
1154     wxUnusedVar(perm);
1155     if (::DosCreateDir((PSZ)dirname, NULL) != 0) // enhance for EAB's??
1156 #elif defined(__DOS__)
1157   #if defined(__WATCOMC__)
1158     (void)perm;
1159     if ( wxMkDir(wxFNSTRINGCAST wxFNCONV(dirname)) != 0 )
1160   #elif defined(__DJGPP__)
1161     if ( mkdir(wxFNCONV(dirname), perm) != 0 )
1162   #else
1163     #error "Unsupported DOS compiler!"
1164   #endif
1165 #else  // !MSW, !DOS and !OS/2 VAC++
1166     wxUnusedVar(perm);
1167 #ifdef __WXWINCE__
1168     if ( !CreateDirectory(dirname, NULL) )
1169 #else
1170     if ( wxMkDir(dir.fn_str()) != 0 )
1171 #endif
1172 #endif // !MSW/MSW
1173     {
1174         wxLogSysError(_("Directory '%s' couldn't be created"), dirname);
1175
1176         return false;
1177     }
1178
1179     return true;
1180 #endif // Mac/!Mac
1181 }
1182
1183 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
1184 {
1185 #if defined(__VMS__)
1186     return false; //to be changed since rmdir exists in VMS7.x
1187 #elif defined(__OS2__)
1188     return (::DosDeleteDir((PSZ)dir.c_str()) == 0);
1189 #elif defined(__WXWINCE__)
1190     return (CreateDirectory(dir, NULL) != 0);
1191 #elif defined(__WXPALMOS__)
1192     // TODO with VFSFileRename()
1193     return false;
1194 #else
1195     return (wxRmDir(OS_FILENAME(dir)) == 0);
1196 #endif
1197 }
1198
1199 // does the path exists? (may have or not '/' or '\\' at the end)
1200 bool wxDirExists(const wxChar *pszPathName)
1201 {
1202     wxString strPath(pszPathName);
1203
1204 #if defined(__WINDOWS__) || defined(__OS2__)
1205     // Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
1206     // so remove all trailing backslashes from the path - but don't do this for
1207     // the pathes "d:\" (which are different from "d:") nor for just "\"
1208     while ( wxEndsWithPathSeparator(strPath) )
1209     {
1210         size_t len = strPath.length();
1211         if ( len == 1 || (len == 3 && strPath[len - 2] == _T(':')) )
1212             break;
1213
1214         strPath.Truncate(len - 1);
1215     }
1216 #endif // __WINDOWS__
1217
1218 #ifdef __OS2__
1219     // OS/2 can't handle "d:", it wants either "d:\" or "d:."
1220     if (strPath.length() == 2 && strPath[1u] == _T(':'))
1221         strPath << _T('.');
1222 #endif
1223
1224 #if defined(__WXPALMOS__)
1225     return false;
1226 #elif defined(__WIN32__) && !defined(__WXMICROWIN__)
1227     // stat() can't cope with network paths
1228     DWORD ret = ::GetFileAttributes(strPath);
1229
1230     return (ret != (DWORD)-1) && (ret & FILE_ATTRIBUTE_DIRECTORY);
1231 #elif defined(__OS2__)
1232     return (bool)(::DosSetCurrentDir((PSZ)(WXSTRINGCAST strPath)));
1233 #else // !__WIN32__
1234
1235     wxStructStat st;
1236 #ifndef __VISAGECPP__
1237     return wxStat(strPath.c_str(), &st) == 0 && ((st.st_mode & S_IFMT) == S_IFDIR);
1238 #else
1239     // S_IFMT not supported in VA compilers.. st_mode is a 2byte value only
1240     return wxStat(pszPathName, &st) == 0 && (st.st_mode == S_IFDIR);
1241 #endif
1242
1243 #endif // __WIN32__/!__WIN32__
1244 }
1245
1246 // Get a temporary filename, opening and closing the file.
1247 wxChar *wxGetTempFileName(const wxString& prefix, wxChar *buf)
1248 {
1249 #if wxUSE_FILE
1250     wxString filename = wxFileName::CreateTempFileName(prefix);
1251     if ( filename.empty() )
1252         return NULL;
1253
1254     if ( buf )
1255         wxStrcpy(buf, filename);
1256     else
1257         buf = MYcopystring(filename);
1258
1259     return buf;
1260 #else
1261     wxUnusedVar(prefix);
1262     wxUnusedVar(buf);
1263     // wxFileName::CreateTempFileName needs wxFile class enabled
1264     return NULL;
1265 #endif
1266 }
1267
1268 bool wxGetTempFileName(const wxString& prefix, wxString& buf)
1269 {
1270     buf = wxGetTempFileName(prefix);
1271
1272     return !buf.empty();
1273 }
1274
1275 // Get first file name matching given wild card.
1276
1277 static wxDir *gs_dir = NULL;
1278 static wxString gs_dirPath;
1279
1280 wxString wxFindFirstFile(const wxChar *spec, int flags)
1281 {
1282     wxSplitPath(spec, &gs_dirPath, NULL, NULL);
1283     if ( gs_dirPath.empty() )
1284         gs_dirPath = wxT(".");
1285     if ( !wxEndsWithPathSeparator(gs_dirPath ) )
1286         gs_dirPath << wxFILE_SEP_PATH;
1287
1288     if (gs_dir)
1289         delete gs_dir;
1290     gs_dir = new wxDir(gs_dirPath);
1291
1292     if ( !gs_dir->IsOpened() )
1293     {
1294         wxLogSysError(_("Can not enumerate files '%s'"), spec);
1295         return wxEmptyString;
1296     }
1297
1298     int dirFlags;
1299     switch (flags)
1300     {
1301         case wxDIR:  dirFlags = wxDIR_DIRS; break;
1302         case wxFILE: dirFlags = wxDIR_FILES; break;
1303         default:     dirFlags = wxDIR_DIRS | wxDIR_FILES; break;
1304     }
1305
1306     wxString result;
1307     gs_dir->GetFirst(&result, wxFileNameFromPath(wxString(spec)), dirFlags);
1308     if ( result.empty() )
1309     {
1310         wxDELETE(gs_dir);
1311         return result;
1312     }
1313
1314     return gs_dirPath + result;
1315 }
1316
1317 wxString wxFindNextFile()
1318 {
1319     wxASSERT_MSG( gs_dir, wxT("You must call wxFindFirstFile before!") );
1320
1321     wxString result;
1322     gs_dir->GetNext(&result);
1323
1324     if ( result.empty() )
1325     {
1326         wxDELETE(gs_dir);
1327         return result;
1328     }
1329
1330     return gs_dirPath + result;
1331 }
1332
1333
1334 // Get current working directory.
1335 // If buf is NULL, allocates space using new, else
1336 // copies into buf.
1337 wxChar *wxGetWorkingDirectory(wxChar *buf, int sz)
1338 {
1339 #if defined(__WXPALMOS__)
1340     // TODO ?
1341     return NULL;
1342 #elif defined(__WXWINCE__)
1343     // TODO
1344     wxUnusedVar(buf);
1345     wxUnusedVar(sz);
1346     return NULL;
1347 #else
1348     if ( !buf )
1349     {
1350         buf = new wxChar[sz + 1];
1351     }
1352
1353     bool ok wxDUMMY_INITIALIZE(false);
1354
1355     // for the compilers which have Unicode version of _getcwd(), call it
1356     // directly, for the others call the ANSI version and do the translation
1357 #if !wxUSE_UNICODE
1358     #define cbuf buf
1359 #else // wxUSE_UNICODE
1360     bool needsANSI = true;
1361
1362     #if !defined(HAVE_WGETCWD) || wxUSE_UNICODE_MSLU
1363         // This is not legal code as the compiler
1364         // is allowed destroy the wxCharBuffer.
1365         // wxCharBuffer c_buffer(sz);
1366         // char *cbuf = (char*)(const char*)c_buffer;
1367         char cbuf[_MAXPATHLEN];
1368     #endif
1369
1370     #ifdef HAVE_WGETCWD
1371         #if wxUSE_UNICODE_MSLU
1372             if ( wxGetOsVersion() != wxWIN95 )
1373         #else
1374             char *cbuf = NULL; // never really used because needsANSI will always be false
1375         #endif
1376             {
1377                 ok = _wgetcwd(buf, sz) != NULL;
1378                 needsANSI = false;
1379             }
1380     #endif
1381
1382     if ( needsANSI )
1383 #endif // wxUSE_UNICODE
1384     {
1385     #if defined(_MSC_VER) || defined(__MINGW32__)
1386         ok = _getcwd(cbuf, sz) != NULL;
1387     #elif defined(__WXMAC__) && !defined(__DARWIN__)
1388         char lbuf[1024] ;
1389         if ( getcwd( lbuf , sizeof( lbuf ) ) )
1390         {
1391             wxString res( lbuf , *wxConvCurrent ) ;
1392             wxStrcpy( buf , res ) ;
1393             ok = true;
1394         }
1395         else
1396             ok = false ;
1397     #elif defined(__OS2__)
1398         APIRET rc;
1399         ULONG ulDriveNum = 0;
1400         ULONG ulDriveMap = 0;
1401         rc = ::DosQueryCurrentDisk(&ulDriveNum, &ulDriveMap);
1402         ok = rc == 0;
1403         if (ok)
1404         {
1405             sz -= 3;
1406             rc = ::DosQueryCurrentDir( 0 // current drive
1407                                       ,cbuf + 3
1408                                       ,(PULONG)&sz
1409                                      );
1410             cbuf[0] = char('A' + (ulDriveNum - 1));
1411             cbuf[1] = ':';
1412             cbuf[2] = '\\';
1413             ok = rc == 0;
1414         }
1415     #else // !Win32/VC++ !Mac !OS2
1416         ok = getcwd(cbuf, sz) != NULL;
1417     #endif // platform
1418
1419     #if wxUSE_UNICODE && !(defined(__WXMAC__) && !defined(__DARWIN__))
1420         // finally convert the result to Unicode if needed
1421         wxConvFile.MB2WC(buf, cbuf, sz);
1422     #endif // wxUSE_UNICODE
1423     }
1424
1425     if ( !ok )
1426     {
1427         wxLogSysError(_("Failed to get the working directory"));
1428
1429         // VZ: the old code used to return "." on error which didn't make any
1430         //     sense at all to me - empty string is a better error indicator
1431         //     (NULL might be even better but I'm afraid this could lead to
1432         //     problems with the old code assuming the return is never NULL)
1433         buf[0] = _T('\0');
1434     }
1435     else // ok, but we might need to massage the path into the right format
1436     {
1437 #ifdef __DJGPP__
1438         // VS: DJGPP is a strange mix of DOS and UNIX API and returns paths
1439         //     with / deliminers. We don't like that.
1440         for (wxChar *ch = buf; *ch; ch++)
1441         {
1442             if (*ch == wxT('/'))
1443                 *ch = wxT('\\');
1444         }
1445 #endif // __DJGPP__
1446
1447 // MBN: we hope that in the case the user is compiling a GTK+/Motif app,
1448 //      he needs Unix as opposed to Win32 pathnames
1449 #if defined( __CYGWIN__ ) && defined( __WINDOWS__ )
1450         // another example of DOS/Unix mix (Cygwin)
1451         wxString pathUnix = buf;
1452         cygwin_conv_to_full_win32_path(pathUnix, buf);
1453 #endif // __CYGWIN__
1454     }
1455
1456     return buf;
1457
1458 #if !wxUSE_UNICODE
1459     #undef cbuf
1460 #endif
1461
1462 #endif
1463     // __WXWINCE__
1464 }
1465
1466 wxString wxGetCwd()
1467 {
1468     wxChar *buffer = new wxChar[_MAXPATHLEN];
1469     wxGetWorkingDirectory(buffer, _MAXPATHLEN);
1470     wxString str( buffer );
1471     delete [] buffer;
1472
1473     return str;
1474 }
1475
1476 bool wxSetWorkingDirectory(const wxString& d)
1477 {
1478 #if defined(__OS2__)
1479     return (::DosSetCurrentDir((PSZ)d.c_str()) == 0);
1480 #elif defined(__UNIX__) || defined(__WXMAC__) || defined(__DOS__)
1481     return (chdir(wxFNSTRINGCAST d.fn_str()) == 0);
1482 #elif defined(__WINDOWS__)
1483
1484 #ifdef __WIN32__
1485 #ifdef __WXWINCE__
1486     // No equivalent in WinCE
1487     wxUnusedVar(d);
1488     return false;
1489 #else
1490     return (bool)(SetCurrentDirectory(d) != 0);
1491 #endif
1492 #else
1493     // Must change drive, too.
1494     bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1495     if (isDriveSpec)
1496     {
1497         wxChar firstChar = d[0];
1498
1499         // To upper case
1500         if (firstChar > 90)
1501             firstChar = firstChar - 32;
1502
1503         // To a drive number
1504         unsigned int driveNo = firstChar - 64;
1505         if (driveNo > 0)
1506         {
1507             unsigned int noDrives;
1508             _dos_setdrive(driveNo, &noDrives);
1509         }
1510     }
1511     bool success = (chdir(WXSTRINGCAST d) == 0);
1512
1513     return success;
1514 #endif
1515
1516 #endif
1517 }
1518
1519 // Get the OS directory if appropriate (such as the Windows directory).
1520 // On non-Windows platform, probably just return the empty string.
1521 wxString wxGetOSDirectory()
1522 {
1523 #ifdef __WXWINCE__
1524     return wxString(wxT("\\Windows"));
1525 #elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
1526     wxChar buf[256];
1527     GetWindowsDirectory(buf, 256);
1528     return wxString(buf);
1529 #elif defined(__WXMAC__)
1530     return wxMacFindFolder(kOnSystemDisk, 'macs', false);
1531 #else
1532     return wxEmptyString;
1533 #endif
1534 }
1535
1536 bool wxEndsWithPathSeparator(const wxChar *pszFileName)
1537 {
1538     size_t len = wxStrlen(pszFileName);
1539
1540     return len && wxIsPathSeparator(pszFileName[len - 1]);
1541 }
1542
1543 // find a file in a list of directories, returns false if not found
1544 bool wxFindFileInPath(wxString *pStr, const wxChar *pszPath, const wxChar *pszFile)
1545 {
1546     // we assume that it's not empty
1547     wxCHECK_MSG( !wxIsEmpty(pszFile), false,
1548                  _T("empty file name in wxFindFileInPath"));
1549
1550     // skip path separator in the beginning of the file name if present
1551     if ( wxIsPathSeparator(*pszFile) )
1552         pszFile++;
1553
1554     // copy the path (strtok will modify it)
1555     wxChar *szPath = new wxChar[wxStrlen(pszPath) + 1];
1556     wxStrcpy(szPath, pszPath);
1557
1558     wxString strFile;
1559     wxChar *pc, *save_ptr;
1560     for ( pc = wxStrtok(szPath, wxPATH_SEP, &save_ptr);
1561           pc != NULL;
1562           pc = wxStrtok((wxChar *) NULL, wxPATH_SEP, &save_ptr) )
1563     {
1564         // search for the file in this directory
1565         strFile = pc;
1566         if ( !wxEndsWithPathSeparator(pc) )
1567             strFile += wxFILE_SEP_PATH;
1568         strFile += pszFile;
1569
1570         if ( wxFileExists(strFile) ) {
1571             *pStr = strFile;
1572             break;
1573         }
1574     }
1575
1576     // suppress warning about unused variable save_ptr when wxStrtok() is a
1577     // macro which throws away its third argument
1578     save_ptr = pc;
1579
1580     delete [] szPath;
1581
1582     return pc != NULL;  // if true => we breaked from the loop
1583 }
1584
1585 void WXDLLEXPORT wxSplitPath(const wxChar *pszFileName,
1586                              wxString *pstrPath,
1587                              wxString *pstrName,
1588                              wxString *pstrExt)
1589 {
1590     // it can be empty, but it shouldn't be NULL
1591     wxCHECK_RET( pszFileName, wxT("NULL file name in wxSplitPath") );
1592
1593     wxFileName::SplitPath(pszFileName, pstrPath, pstrName, pstrExt);
1594 }
1595
1596 time_t WXDLLEXPORT wxFileModificationTime(const wxString& filename)
1597 {
1598 #if defined(__WXPALMOS__)
1599     return 0;
1600 #elif defined(__WXWINCE__)
1601     FILETIME ftLastWrite;
1602     AutoHANDLE hFile(::CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
1603                                     NULL, 0, FILE_ATTRIBUTE_NORMAL, 0));
1604
1605     if ( !hFile.IsOk() )
1606         return 0;
1607
1608     if ( !::GetFileTime(hFile, NULL, NULL, &ftLastWrite) )
1609         return 0;
1610
1611     // sure we want to translate to local time here?
1612     FILETIME ftLocal;
1613     if ( !::FileTimeToLocalFileTime(&ftLastWrite, &ftLocal) )
1614     {
1615         wxLogLastError(_T("FileTimeToLocalFileTime"));
1616     }
1617
1618     // FILETIME is a counted in 100-ns since 1601-01-01, convert it to
1619     // number of seconds since 1970-01-01
1620     ULARGE_INTEGER uli;
1621     uli.LowPart = ftLocal.dwLowDateTime;
1622     uli.HighPart = ftLocal.dwHighDateTime;
1623
1624     ULONGLONG ull = uli.QuadPart;
1625     ull /= wxULL(10000000);     // number of 100ns intervals in 1s
1626     ull -= wxULL(11644473600);  // 1970-01-01 - 1601-01-01 in seconds
1627
1628     return wx_static_cast(time_t, ull);
1629 #else
1630     wxStructStat buf;
1631     if ( wxStat( filename, &buf) != 0 )
1632         return 0;
1633
1634     return buf.st_mtime;
1635 #endif
1636 }
1637
1638
1639 // Parses the filterStr, returning the number of filters.
1640 // Returns 0 if none or if there's a problem.
1641 // filterStr is in the form: "All files (*.*)|*.*|JPEG Files (*.jpeg)|*.jpeg"
1642
1643 int WXDLLEXPORT wxParseCommonDialogsFilter(const wxString& filterStr,
1644                                            wxArrayString& descriptions,
1645                                            wxArrayString& filters)
1646 {
1647     descriptions.Clear();
1648     filters.Clear();
1649
1650     wxString str(filterStr);
1651
1652     wxString description, filter;
1653     int pos = 0;
1654     while( pos != wxNOT_FOUND )
1655     {
1656         pos = str.Find(wxT('|'));
1657         if ( pos == wxNOT_FOUND )
1658         {
1659             // if there are no '|'s at all in the string just take the entire
1660             // string as filter and make description empty for later autocompletion
1661             if ( filters.IsEmpty() )
1662             {
1663                 descriptions.Add(wxEmptyString);
1664                 filters.Add(filterStr);
1665             }
1666             else
1667             {
1668                 wxFAIL_MSG( _T("missing '|' in the wildcard string!") );
1669             }
1670
1671             break;
1672         }
1673
1674         description = str.Left(pos);
1675         str = str.Mid(pos + 1);
1676         pos = str.Find(wxT('|'));
1677         if ( pos == wxNOT_FOUND )
1678         {
1679             filter = str;
1680         }
1681         else
1682         {
1683             filter = str.Left(pos);
1684             str = str.Mid(pos + 1);
1685         }
1686
1687         descriptions.Add(description);
1688         filters.Add(filter);
1689     }
1690
1691 #if defined(__WXMOTIF__)
1692     // split it so there is one wildcard per entry
1693     for( size_t i = 0 ; i < descriptions.GetCount() ; i++ )
1694     {
1695         pos = filters[i].Find(wxT(';'));
1696         if (pos != wxNOT_FOUND)
1697         {
1698             // first split only filters
1699             descriptions.Insert(descriptions[i],i+1);
1700             filters.Insert(filters[i].Mid(pos+1),i+1);
1701             filters[i]=filters[i].Left(pos);
1702
1703             // autoreplace new filter in description with pattern:
1704             //     C/C++ Files(*.cpp;*.c;*.h)|*.cpp;*.c;*.h
1705             // cause split into:
1706             //     C/C++ Files(*.cpp)|*.cpp
1707             //     C/C++ Files(*.c;*.h)|*.c;*.h
1708             // and next iteration cause another split into:
1709             //     C/C++ Files(*.cpp)|*.cpp
1710             //     C/C++ Files(*.c)|*.c
1711             //     C/C++ Files(*.h)|*.h
1712             for ( size_t k=i;k<i+2;k++ )
1713             {
1714                 pos = descriptions[k].Find(filters[k]);
1715                 if (pos != wxNOT_FOUND)
1716                 {
1717                     wxString before = descriptions[k].Left(pos);
1718                     wxString after = descriptions[k].Mid(pos+filters[k].Len());
1719                     pos = before.Find(_T('('),true);
1720                     if (pos>before.Find(_T(')'),true))
1721                     {
1722                         before = before.Left(pos+1);
1723                         before << filters[k];
1724                         pos = after.Find(_T(')'));
1725                         int pos1 = after.Find(_T('('));
1726                         if (pos != wxNOT_FOUND && (pos<pos1 || pos1==wxNOT_FOUND))
1727                         {
1728                             before << after.Mid(pos);
1729                             descriptions[k] = before;
1730                         }
1731                     }
1732                 }
1733             }
1734         }
1735     }
1736 #endif
1737
1738     // autocompletion
1739     for( size_t j = 0 ; j < descriptions.GetCount() ; j++ )
1740     {
1741         if ( descriptions[j].empty() && !filters[j].empty() )
1742         {
1743             descriptions[j].Printf(_("Files (%s)"), filters[j].c_str());
1744         }
1745     }
1746
1747     return filters.GetCount();
1748 }
1749
1750
1751 //------------------------------------------------------------------------
1752 // wild character routines
1753 //------------------------------------------------------------------------
1754
1755 bool wxIsWild( const wxString& pattern )
1756 {
1757     wxString tmp = pattern;
1758     wxChar *pat = WXSTRINGCAST(tmp);
1759     while (*pat)
1760     {
1761         switch (*pat++)
1762         {
1763         case wxT('?'): case wxT('*'): case wxT('['): case wxT('{'):
1764             return true;
1765         case wxT('\\'):
1766             if (!*pat++)
1767                 return false;
1768         }
1769     }
1770     return false;
1771 }
1772
1773 /*
1774 * Written By Douglas A. Lewis <dalewis@cs.Buffalo.EDU>
1775 *
1776 * The match procedure is public domain code (from ircII's reg.c)
1777 */
1778
1779 bool wxMatchWild( const wxString& pat, const wxString& text, bool dot_special )
1780 {
1781         if (text.empty())
1782         {
1783                 /* Match if both are empty. */
1784                 return pat.empty();
1785         }
1786
1787         const wxChar *m = pat.c_str(),
1788         *n = text.c_str(),
1789         *ma = NULL,
1790         *na = NULL,
1791         *mp = NULL,
1792         *np = NULL;
1793         int just = 0,
1794         pcount = 0,
1795         acount = 0,
1796         count = 0;
1797
1798         if (dot_special && (*n == wxT('.')))
1799         {
1800                 /* Never match so that hidden Unix files
1801                  * are never found. */
1802                 return false;
1803         }
1804
1805         for (;;)
1806         {
1807                 if (*m == wxT('*'))
1808                 {
1809                         ma = ++m;
1810                         na = n;
1811                         just = 1;
1812                         mp = NULL;
1813                         acount = count;
1814                 }
1815                 else if (*m == wxT('?'))
1816                 {
1817                         m++;
1818                         if (!*n++)
1819                         return false;
1820                 }
1821                 else
1822                 {
1823                         if (*m == wxT('\\'))
1824                         {
1825                                 m++;
1826                                 /* Quoting "nothing" is a bad thing */
1827                                 if (!*m)
1828                                 return false;
1829                         }
1830                         if (!*m)
1831                         {
1832                                 /*
1833                                 * If we are out of both strings or we just
1834                                 * saw a wildcard, then we can say we have a
1835                                 * match
1836                                 */
1837                                 if (!*n)
1838                                 return true;
1839                                 if (just)
1840                                 return true;
1841                                 just = 0;
1842                                 goto not_matched;
1843                         }
1844                         /*
1845                         * We could check for *n == NULL at this point, but
1846                         * since it's more common to have a character there,
1847                         * check to see if they match first (m and n) and
1848                         * then if they don't match, THEN we can check for
1849                         * the NULL of n
1850                         */
1851                         just = 0;
1852                         if (*m == *n)
1853                         {
1854                                 m++;
1855                                 if (*n == wxT(' '))
1856                                 mp = NULL;
1857                                 count++;
1858                                 n++;
1859                         }
1860                         else
1861                         {
1862
1863                                 not_matched:
1864
1865                                 /*
1866                                 * If there are no more characters in the
1867                                 * string, but we still need to find another
1868                                 * character (*m != NULL), then it will be
1869                                 * impossible to match it
1870                                 */
1871                                 if (!*n)
1872                                 return false;
1873                                 if (mp)
1874                                 {
1875                                         m = mp;
1876                                         if (*np == wxT(' '))
1877                                         {
1878                                                 mp = NULL;
1879                                                 goto check_percent;
1880                                         }
1881                                         n = ++np;
1882                                         count = pcount;
1883                                 }
1884                                 else
1885                                 check_percent:
1886
1887                                 if (ma)
1888                                 {
1889                                         m = ma;
1890                                         n = ++na;
1891                                         count = acount;
1892                                 }
1893                                 else
1894                                 return false;
1895                         }
1896                 }
1897         }
1898 }
1899
1900 // Return the type of an open file
1901 //
1902 // Some file types on some platforms seem seekable but in fact are not.
1903 // The main use of this function is to allow such cases to be detected
1904 // (IsSeekable() is implemented as wxGetFileKind() == wxFILE_KIND_DISK).
1905 //
1906 // This is important for the archive streams, which benefit greatly from
1907 // being able to seek on a stream, but which will produce corrupt archives
1908 // if they unknowingly seek on a non-seekable stream.
1909 //
1910 // wxFILE_KIND_DISK is a good catch all return value, since other values
1911 // disable features of the archive streams. Some other value must be returned
1912 // for a file type that appears seekable but isn't.
1913 //
1914 // Known examples:
1915 //   *  Pipes on Windows
1916 //   *  Files on VMS with a record format other than StreamLF
1917 //
1918 wxFileKind wxGetFileKind(int fd)
1919 {
1920 #if defined __WXMSW__ && !defined __WXWINCE__ && defined wxGetOSFHandle
1921     switch (::GetFileType(wxGetOSFHandle(fd)) & ~FILE_TYPE_REMOTE)
1922     {
1923         case FILE_TYPE_CHAR:
1924             return wxFILE_KIND_TERMINAL;
1925         case FILE_TYPE_DISK:
1926             return wxFILE_KIND_DISK;
1927         case FILE_TYPE_PIPE:
1928             return wxFILE_KIND_PIPE;
1929     }
1930
1931     return wxFILE_KIND_UNKNOWN;
1932
1933 #elif defined(__UNIX__)
1934     if (isatty(fd))
1935         return wxFILE_KIND_TERMINAL;
1936
1937     struct stat st;
1938     fstat(fd, &st);
1939
1940     if (S_ISFIFO(st.st_mode))
1941         return wxFILE_KIND_PIPE;
1942     if (!S_ISREG(st.st_mode))
1943         return wxFILE_KIND_UNKNOWN;
1944
1945     #if defined(__VMS__)
1946         if (st.st_fab_rfm != FAB$C_STMLF)
1947             return wxFILE_KIND_UNKNOWN;
1948     #endif
1949
1950     return wxFILE_KIND_DISK;
1951
1952 #else
1953     #define wxFILEKIND_STUB
1954     (void)fd;
1955     return wxFILE_KIND_DISK;
1956 #endif
1957 }
1958
1959 wxFileKind wxGetFileKind(FILE *fp)
1960 {
1961     // Note: The watcom rtl dll doesn't have fileno (the static lib does).
1962     //       Should be fixed in version 1.4.
1963 #if defined(wxFILEKIND_STUB) || \
1964         (defined(__WATCOMC__) && __WATCOMC__ <= 1230 && defined(__SW_BR))
1965     (void)fp;
1966     return wxFILE_KIND_DISK;
1967 #else
1968     return wxGetFileKind(fileno(fp));
1969 #endif
1970 }
1971
1972 #ifdef __VISUALC__
1973     #pragma warning(default:4706)   // assignment within conditional expression
1974 #endif // VC++