src/common/filefn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        filefn.cpp
   3 // Purpose:     File- and directory-related functions
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "filefn.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18 #include "wx/defs.h"
  19
  20 #ifdef __BORLANDC__
  21 #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25 #include "wx/defs.h"
  26 #endif
  27
  28 #include "wx/utils.h"
  29 #include <wx/intl.h>
  30
  31 #include <ctype.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #if !defined(__WATCOMC__)
  36 #if !(defined(_MSC_VER) && (_MSC_VER > 800))
  37 #include <errno.h>
  38 #endif
  39 #endif
  40 #include <time.h>
  41 #include <sys/types.h>
  42 #include <sys/stat.h>
  43
  44 #ifdef __UNIX__
  45 #include <unistd.h>
  46 #include <dirent.h>
  47 #endif
  48
  49 #ifdef __WXMSW__
  50 #ifndef __GNUWIN32__
  51 #include <direct.h>
  52 #include <dos.h>
  53 #endif
  54 #endif
  55
  56 #ifdef __GNUWIN32__
  57 #include <sys/unistd.h>
  58 // #include <sys/stat.h>
  59
  60 #ifndef __MINGW32__
  61 #include <std.h>
  62 #endif
  63
  64 #define stricmp strcasecmp
  65 #endif
  66
  67 #ifdef __BORLANDC__ // Please someone tell me which version of Borland needs
  68                     // this (3.1 I believe) and how to test for it.
  69                     // If this works for Borland 4.0 as well, then no worries.
  70 #include <dir.h>
  71 #endif
  72
  73 #ifdef __WXMSW__
  74 #include "windows.h"
  75 #endif
  76
  77 #define _MAXPATHLEN 500
  78
  79 #if !USE_SHARED_LIBRARY
  80 IMPLEMENT_DYNAMIC_CLASS(wxPathList, wxStringList)
  81 #endif
  82
  83 extern char *wxBuffer;
  84
  85 void wxPathList::Add (const wxString& path)
  86 {
  87   wxStringList::Add ((char *)(const char *)path);
  88 }
  89
  90 // Add paths e.g. from the PATH environment variable
  91 void wxPathList::AddEnvList (const wxString& envVariable)
  92 {
  93   static const char PATH_TOKS[] =
  94 #ifdef __WXMSW__
  95         " ;"; // Don't seperate with colon in DOS (used for drive)
  96 #else
  97         " :;";
  98 #endif
  99
 100   char *val = getenv (WXSTRINGCAST envVariable);
 101   if (val && *val)
 102     {
 103       char *s = copystring (val);
 104       char *token = strtok (s, PATH_TOKS);
 105
 106       if (token)
 107         {
 108           Add (copystring (token));
 109           while (token)
 110             {
 111               if ((token = strtok (NULL, PATH_TOKS)) != NULL)
 112                 Add (wxString(token));
 113             }
 114         }
 115       delete[]s;
 116     }
 117 }
 118
 119 // Given a full filename (with path), ensure that that file can
 120 // be accessed again USING FILENAME ONLY by adding the path
 121 // to the list if not already there.
 122 void wxPathList::EnsureFileAccessible (const wxString& path)
 123 {
 124   wxString path1(path);
 125   char *path_only = wxPathOnly (WXSTRINGCAST path1);
 126   if (path_only)
 127   {
 128       if (!Member (wxString(path_only)))
 129             Add (wxString(path_only));
 130   }
 131 }
 132
 133 bool wxPathList::Member (const wxString& path)
 134 {
 135   for (wxNode * node = First (); node != NULL; node = node->Next ())
 136   {
 137       wxString path2((char *) node->Data ());
 138       if (
 139 #if defined(__WXMSW__) || defined(__VMS__)
 140       // Case INDEPENDENT
 141           path.CompareTo (path2, wxString::ignoreCase) == 0
 142 #else
 143       // Case sensitive File System
 144           path.CompareTo (path2) == 0
 145 #endif
 146         )
 147         return TRUE;
 148   }
 149   return FALSE;
 150 }
 151
 152 wxString wxPathList::FindValidPath (const wxString& file)
 153 {
 154   if (wxFileExists (wxExpandPath(wxBuffer, file)))
 155     return wxString(wxBuffer);
 156
 157   char buf[_MAXPATHLEN];
 158   strcpy(buf, wxBuffer);
 159
 160   char *filename = IsAbsolutePath (buf) ? wxFileNameFromPath (buf) : (char *)buf;
 161
 162   for (wxNode * node = First (); node; node = node->Next ())
 163     {
 164       char *path = (char *) node->Data ();
 165       strcpy (wxBuffer, path);
 166       char ch = wxBuffer[strlen(wxBuffer)-1];
 167       if (ch != '\\' && ch != '/')
 168         strcat (wxBuffer, "/");
 169       strcat (wxBuffer, filename);
 170 #ifdef __WXMSW__
 171       Unix2DosFilename (wxBuffer);
 172 #endif
 173       if (wxFileExists (wxBuffer))
 174       {
 175         return wxString(wxBuffer);      // Found!
 176       }
 177     }                           // for()
 178
 179   return wxString("");                  // Not found
 180 }
 181
 182 wxString wxPathList::FindAbsoluteValidPath (const wxString& file)
 183 {
 184   wxString f = FindValidPath(file);
 185   if (wxIsAbsolutePath(f))
 186     return f;
 187   else
 188   {
 189     char buf[500];
 190     wxGetWorkingDirectory(buf, 499);
 191     int len = (int)strlen(buf);
 192     char lastCh = 0;
 193     if (len > 0)
 194       lastCh = buf[len-1];
 195     if (lastCh != '/' && lastCh != '\\')
 196     {
 197 #ifdef __WXMSW__
 198       strcat(buf, "\\");
 199 #else
 200       strcat(buf, "/");
 201 #endif
 202     }
 203     strcat(buf, (const char *)f);
 204     strcpy(wxBuffer, buf);
 205     return wxString(wxBuffer);
 206   }
 207 }
 208
 209 bool
 210 wxFileExists (const wxString& filename)
 211 {
 212   struct stat stbuf;
 213
 214   if (filename && stat ((char *)(const char *)filename, &stbuf) == 0)
 215     return TRUE;
 216   return FALSE;
 217 }
 218
 219 /* Vadim's alternative implementation
 220
 221 // does the file exist?
 222 bool wxFileExists(const char *pszFileName)
 223 {
 224   struct stat st;
 225   return !access(pszFileName, 0) &&
 226          !stat(pszFileName, &st) &&
 227          (st.st_mode & S_IFREG);
 228 }
 229 */
 230
 231 bool
 232 wxIsAbsolutePath (const wxString& filename)
 233 {
 234   if (filename != "")
 235     {
 236       if (filename[0] == '/'
 237 #ifdef __VMS__
 238       || (filename[0] == '[' && filename[1] != '.')
 239 #endif
 240 #ifdef __WXMSW__
 241       /* MSDOS */
 242       || filename[0] == '\\' || (isalpha (filename[0]) && filename[1] == ':')
 243 #endif
 244         )
 245         return TRUE;
 246     }
 247   return FALSE;
 248 }
 249
 250 /*
 251  * Strip off any extension (dot something) from end of file,
 252  * IF one exists. Inserts zero into buffer.
 253  *
 254  */
 255
 256 void wxStripExtension(char *buffer)
 257 {
 258   int len = strlen(buffer);
 259   int i = len-1;
 260   while (i > 0)
 261   {
 262     if (buffer[i] == '.')
 263     {
 264       buffer[i] = 0;
 265       break;
 266     }
 267     i --;
 268   }
 269 }
 270
 271 void wxStripExtension(wxString& buffer)
 272 {
 273   size_t len = buffer.Length();
 274   size_t i = len-1;
 275   while (i > 0)
 276   {
 277     if (buffer.GetChar(i) == '.')
 278     {
 279       buffer = buffer.Left(i);
 280       break;
 281     }
 282     i --;
 283   }
 284 }
 285
 286 // Destructive removal of /./ and /../ stuff
 287 char *wxRealPath (char *path)
 288 {
 289 #ifdef __WXMSW__
 290   static const char SEP = '\\';
 291   Unix2DosFilename(path);
 292 #else
 293   static const char SEP = '/';
 294 #endif
 295   if (path[0] && path[1]) {
 296     /* MATTHEW: special case "/./x" */
 297     char *p;
 298     if (path[2] == SEP && path[1] == '.')
 299       p = &path[0];
 300     else
 301       p = &path[2];
 302     for (; *p; p++)
 303       {
 304         if (*p == SEP)
 305           {
 306             if (p[1] == '.' && p[2] == '.' && (p[3] == SEP || p[3] == '\0'))
 307               {
 308                 char *q;
 309                 for (q = p - 1; q >= path && *q != SEP; q--);
 310                 if (q[0] == SEP && (q[1] != '.' || q[2] != '.' || q[3] != SEP)
 311                     && (q - 1 <= path || q[-1] != SEP))
 312                   {
 313                     strcpy (q, p + 3);
 314                     if (path[0] == '\0')
 315                       {
 316                         path[0] = SEP;
 317                         path[1] = '\0';
 318                       }
 319 #ifdef __WXMSW__
 320                     /* Check that path[2] is NULL! */
 321                     else if (path[1] == ':' && !path[2])
 322                       {
 323                         path[2] = SEP;
 324                         path[3] = '\0';
 325                       }
 326 #endif
 327                     p = q - 1;
 328                   }
 329               }
 330             else if (p[1] == '.' && (p[2] == SEP || p[2] == '\0'))
 331               strcpy (p, p + 2);
 332           }
 333       }
 334   }
 335   return path;
 336 }
 337
 338 // Must be destroyed
 339 char *wxCopyAbsolutePath(const wxString& filename)
 340 {
 341   if (filename == "")
 342     return NULL;
 343
 344   if (! IsAbsolutePath(wxExpandPath(wxBuffer, filename))) {
 345     char    buf[_MAXPATHLEN];
 346     buf[0] = '\0';
 347     wxGetWorkingDirectory(buf, sizeof(buf)/sizeof(char));
 348     char ch = buf[strlen(buf) - 1];
 349 #ifdef __WXMSW__
 350     if (ch != '\\' && ch != '/')
 351         strcat(buf, "\\");
 352 #else
 353     if (ch != '/')
 354         strcat(buf, "/");
 355 #endif
 356     strcat(buf, wxBuffer);
 357     return copystring( wxRealPath(buf) );
 358   }
 359   return copystring( wxBuffer );
 360 }
 361
 362 /*-
 363  Handles:
 364    ~/ => home dir
 365    ~user/ => user's home dir
 366    If the environment variable a = "foo" and b = "bar" then:
 367    Unix:
 368         $a      =>      foo
 369         $a$b    =>      foobar
 370         $a.c    =>      foo.c
 371         xxx$a   =>      xxxfoo
 372         ${a}!   =>      foo!
 373         $(b)!   =>      bar!
 374         \$a     =>      \$a
 375    MSDOS:
 376         $a      ==>     $a
 377         $(a)    ==>     foo
 378         $(a)$b  ==>     foo$b
 379         $(a)$(b)==>     foobar
 380         test.$$ ==>     test.$$
 381  */
 382
 383 /* input name in name, pathname output to buf. */
 384
 385 char *wxExpandPath(char *buf, const char *name)
 386 {
 387     register char  *d, *s, *nm;
 388     char            lnm[_MAXPATHLEN];
 389     int                         q;
 390
 391     // Some compilers don't like this line.
 392 //    const char      trimchars[] = "\n \t";
 393
 394     char      trimchars[4];
 395     trimchars[0] = '\n';
 396     trimchars[1] = ' ';
 397     trimchars[2] = '\t';
 398     trimchars[3] = 0;
 399
 400 #ifdef __WXMSW__
 401      const char     SEP = '\\';
 402 #else
 403      const char     SEP = '/';
 404 #endif
 405     buf[0] = '\0';
 406     if (name == NULL || *name == '\0')
 407         return buf;
 408     nm = copystring(name); // Make a scratch copy
 409     char *nm_tmp = nm;
 410
 411     /* Skip leading whitespace and cr */
 412     while (strchr((char *)trimchars, *nm) != NULL)
 413         nm++;
 414     /* And strip off trailing whitespace and cr */
 415     s = nm + (q = strlen(nm)) - 1;
 416     while (q-- && strchr((char *)trimchars, *s) != NULL)
 417         *s = '\0';
 418
 419     s = nm;
 420     d = lnm;
 421 #ifdef __WXMSW__
 422     q = FALSE;
 423 #else
 424     q = nm[0] == '\\' && nm[1] == '~';
 425 #endif
 426
 427     /* Expand inline environment variables */
 428     while ((*d++ = *s)) {
 429 #ifndef __WXMSW__
 430         if (*s == '\\') {
 431             if ((*(d - 1) = *++s)) {
 432                 s++;
 433                 continue;
 434             } else
 435                 break;
 436         } else
 437 #endif
 438 #ifdef __WXMSW__
 439         if (*s++ == '$' && (*s == '{' || *s == ')'))
 440 #else
 441         if (*s++ == '$')
 442 #endif
 443         {
 444             register char  *start = d;
 445             register        braces = (*s == '{' || *s == '(');
 446             register char  *value;
 447             while ((*d++ = *s))
 448                 if (braces ? (*s == '}' || *s == ')') : !(isalnum(*s) || *s == '_') )
 449                     break;
 450                 else
 451                     s++;
 452             *--d = 0;
 453             value = getenv(braces ? start + 1 : start);
 454             if (value) {
 455                 for ((d = start - 1); (*d++ = *value++););
 456                 d--;
 457                 if (braces && *s)
 458                     s++;
 459             }
 460         }
 461     }
 462
 463     /* Expand ~ and ~user */
 464     nm = lnm;
 465     s = "";
 466     if (nm[0] == '~' && !q)
 467     {
 468         /* prefix ~ */
 469         if (nm[1] == SEP || nm[1] == 0)
 470         {       /* ~/filename */
 471             if ((s = wxGetUserHome("")) != NULL) {
 472                 if (*++nm)
 473                     nm++;
 474             }
 475         } else
 476         {               /* ~user/filename */
 477             register char  *nnm;
 478             register char  *home;
 479             for (s = nm; *s && *s != SEP; s++);
 480             int was_sep; /* MATTHEW: Was there a separator, or NULL? */
 481             was_sep = (*s == SEP);
 482             nnm = *s ? s + 1 : s;
 483             *s = 0;
 484             if ((home = wxGetUserHome(wxString(nm + 1))) == NULL) {
 485                if (was_sep) /* replace only if it was there: */
 486                   *s = SEP;
 487                 s = "";
 488             } else {
 489                 nm = nnm;
 490                 s = home;
 491             }
 492         }
 493     }
 494
 495     d = buf;
 496     if (s && *s) { /* MATTHEW: s could be NULL if user '~' didn't exist */
 497         /* Copy home dir */
 498         while ('\0' != (*d++ = *s++))
 499           /* loop */;
 500         // Handle root home
 501         if (d - 1 > buf && *(d - 2) != SEP)
 502           *(d - 1) = SEP;
 503     }
 504     s = nm;
 505     while ((*d++ = *s++));
 506
 507     delete[] nm_tmp; // clean up alloc
 508     /* Now clean up the buffer */
 509     return wxRealPath(buf);
 510 }
 511
 512
 513 /* Contract Paths to be build upon an environment variable
 514    component:
 515
 516    example: "/usr/openwin/lib", OPENWINHOME --> ${OPENWINHOME}/lib
 517
 518    The call wxExpandPath can convert these back!
 519  */
 520 char *
 521 wxContractPath (const wxString& filename, const wxString& envname, const wxString& user)
 522 {
 523   static char dest[_MAXPATHLEN];
 524
 525   if (filename == "")
 526     return NULL;
 527
 528   strcpy (dest, WXSTRINGCAST filename);
 529 #ifdef __WXMSW__
 530   Unix2DosFilename(dest);
 531 #endif
 532
 533   // Handle environment
 534   char *val = NULL;
 535   char *tcp = NULL;
 536   if (envname != NULL && (val = getenv (WXSTRINGCAST envname)) != NULL &&
 537      (tcp = strstr (dest, val)) != NULL)
 538     {
 539         strcpy (wxBuffer, tcp + strlen (val));
 540         *tcp++ = '$';
 541         *tcp++ = '{';
 542         strcpy (tcp, WXSTRINGCAST envname);
 543         strcat (tcp, "}");
 544         strcat (tcp, wxBuffer);
 545     }
 546
 547   // Handle User's home (ignore root homes!)
 548   size_t len = 0;
 549   if ((val = wxGetUserHome (user)) != NULL &&
 550       (len = strlen(val)) > 2 &&
 551       strncmp(dest, val, len) == 0)
 552     {
 553       strcpy(wxBuffer, "~");
 554       if (user && *user)
 555         strcat(wxBuffer, user);
 556 #ifdef __WXMSW__
 557 //      strcat(wxBuffer, "\\");
 558 #else
 559 //      strcat(wxBuffer, "/");
 560 #endif
 561       strcat(wxBuffer, dest + len);
 562       strcpy (dest, wxBuffer);
 563     }
 564
 565   return dest;
 566 }
 567
 568 // Return just the filename, not the path
 569 // (basename)
 570 char *wxFileNameFromPath (char *path)
 571 {
 572   if (path)
 573     {
 574       register char *tcp;
 575
 576       tcp = path + strlen (path);
 577       while (--tcp >= path)
 578         {
 579           if (*tcp == '/' || *tcp == '\\'
 580 #ifdef __VMS__
 581      || *tcp == ':' || *tcp == ']')
 582 #else
 583      )
 584 #endif
 585             return tcp + 1;
 586         }                       /* while */
 587 #ifdef __WXMSW__
 588       if (isalpha (*path) && *(path + 1) == ':')
 589         return path + 2;
 590 #endif
 591     }
 592   return path;
 593 }
 594
 595 wxString wxFileNameFromPath (const wxString& path1)
 596 {
 597   if (path1 != "")
 598   {
 599
 600       char *path = WXSTRINGCAST path1 ;
 601       register char *tcp;
 602
 603       tcp = path + strlen (path);
 604       while (--tcp >= path)
 605           {
 606             if (*tcp == '/' || *tcp == '\\'
 607 #ifdef __VMS__
 608         || *tcp == ':' || *tcp == ']')
 609 #else
 610         )
 611 #endif
 612                 return wxString(tcp + 1);
 613             }                   /* while */
 614 #ifdef __WXMSW__
 615       if (isalpha (*path) && *(path + 1) == ':')
 616             return wxString(path + 2);
 617 #endif
 618     }
 619   return wxString("");
 620 }
 621
 622 // Return just the directory, or NULL if no directory
 623 char *
 624 wxPathOnly (char *path)
 625 {
 626   if (path && *path)
 627     {
 628       static char buf[_MAXPATHLEN];
 629
 630       // Local copy
 631       strcpy (buf, path);
 632
 633       int l = strlen(path);
 634       bool done = FALSE;
 635
 636       int i = l - 1;
 637
 638       // Search backward for a backward or forward slash
 639       while (!done && i > -1)
 640       {
 641         // ] is for VMS
 642         if (path[i] == '/' || path[i] == '\\' || path[i] == ']')
 643         {
 644           done = TRUE;
 645 #ifdef __VMS__
 646           buf[i+1] = 0;
 647 #else
 648           buf[i] = 0;
 649 #endif
 650
 651           return buf;
 652         }
 653         else i --;
 654       }
 655
 656 #ifdef __WXMSW__
 657       // Try Drive specifier
 658       if (isalpha (buf[0]) && buf[1] == ':')
 659         {
 660           // A:junk --> A:. (since A:.\junk Not A:\junk)
 661           buf[2] = '.';
 662           buf[3] = '\0';
 663           return buf;
 664         }
 665 #endif
 666     }
 667
 668   return NULL;
 669 }
 670
 671 // Return just the directory, or NULL if no directory
 672 wxString wxPathOnly (const wxString& path)
 673 {
 674   if (path != "")
 675     {
 676       char buf[_MAXPATHLEN];
 677
 678       // Local copy
 679       strcpy (buf, WXSTRINGCAST path);
 680
 681       int l = path.Length();
 682       bool done = FALSE;
 683
 684       int i = l - 1;
 685
 686       // Search backward for a backward or forward slash
 687       while (!done && i > -1)
 688       {
 689         // ] is for VMS
 690         if (path[i] == '/' || path[i] == '\\' || path[i] == ']')
 691         {
 692           done = TRUE;
 693 #ifdef __VMS__
 694           buf[i+1] = 0;
 695 #else
 696           buf[i] = 0;
 697 #endif
 698
 699           return wxString(buf);
 700         }
 701         else i --;
 702       }
 703
 704 #ifdef __WXMSW__
 705       // Try Drive specifier
 706       if (isalpha (buf[0]) && buf[1] == ':')
 707         {
 708           // A:junk --> A:. (since A:.\junk Not A:\junk)
 709           buf[2] = '.';
 710           buf[3] = '\0';
 711           return wxString(buf);
 712         }
 713 #endif
 714     }
 715
 716   return wxString("");
 717 }
 718
 719 // Utility for converting delimiters in DOS filenames to UNIX style
 720 // and back again - or we get nasty problems with delimiters.
 721 // Also, convert to lower case, since case is significant in UNIX.
 722
 723 void
 724 wxDos2UnixFilename (char *s)
 725 {
 726   if (s)
 727     while (*s)
 728       {
 729         if (*s == '\\')
 730           *s = '/';
 731 #ifdef __WXMSW__
 732         else
 733           *s = wxToLower (*s);  // Case INDEPENDENT
 734 #endif
 735         s++;
 736       }
 737 }
 738
 739 void
 740 #ifdef __WXMSW__
 741 wxUnix2DosFilename (char *s)
 742 #else
 743 wxUnix2DosFilename (char *WXUNUSED(s))
 744 #endif
 745 {
 746 // Yes, I really mean this to happen under DOS only! JACS
 747 #ifdef __WXMSW__
 748   if (s)
 749     while (*s)
 750       {
 751         if (*s == '/')
 752           *s = '\\';
 753         s++;
 754       }
 755 #endif
 756 }
 757
 758 // Concatenate two files to form third
 759 bool
 760 wxConcatFiles (const wxString& file1, const wxString& file2, const wxString& file3)
 761 {
 762   char *outfile = wxGetTempFileName("cat");
 763
 764   FILE *fp1 = NULL;
 765   FILE *fp2 = NULL;
 766   FILE *fp3 = NULL;
 767   // Open the inputs and outputs
 768   if ((fp1 = fopen (WXSTRINGCAST file1, "rb")) == NULL ||
 769       (fp2 = fopen (WXSTRINGCAST file2, "rb")) == NULL ||
 770       (fp3 = fopen (outfile, "wb")) == NULL)
 771     {
 772       if (fp1)
 773         fclose (fp1);
 774       if (fp2)
 775         fclose (fp2);
 776       if (fp3)
 777         fclose (fp3);
 778       return FALSE;
 779     }
 780
 781   int ch;
 782   while ((ch = getc (fp1)) != EOF)
 783     (void) putc (ch, fp3);
 784   fclose (fp1);
 785
 786   while ((ch = getc (fp2)) != EOF)
 787     (void) putc (ch, fp3);
 788   fclose (fp2);
 789
 790   fclose (fp3);
 791   bool result = wxRenameFile(outfile, file3);
 792   delete[] outfile;
 793   return result;
 794 }
 795
 796 // Copy files
 797 bool
 798 wxCopyFile (const wxString& file1, const wxString& file2)
 799 {
 800   FILE *fd1;
 801   FILE *fd2;
 802   int ch;
 803
 804   if ((fd1 = fopen (WXSTRINGCAST file1, "rb")) == NULL)
 805     return FALSE;
 806   if ((fd2 = fopen (WXSTRINGCAST file2, "wb")) == NULL)
 807     {
 808       fclose (fd1);
 809       return FALSE;
 810     }
 811
 812   while ((ch = getc (fd1)) != EOF)
 813     (void) putc (ch, fd2);
 814
 815   fclose (fd1);
 816   fclose (fd2);
 817   return TRUE;
 818 }
 819
 820 bool
 821 wxRenameFile (const wxString& file1, const wxString& file2)
 822 {
 823   // Normal system call
 824   if (0 == rename (WXSTRINGCAST file1, WXSTRINGCAST file2))
 825     return TRUE;
 826   // Try to copy
 827   if (wxCopyFile(file1, file2)) {
 828     wxRemoveFile(file1);
 829     return TRUE;
 830   }
 831   // Give up
 832   return FALSE;
 833 }
 834
 835 bool wxRemoveFile(const wxString& file)
 836 {
 837 #if defined(_MSC_VER) || defined(__BORLANDC__)
 838   int flag = remove(WXSTRINGCAST file);
 839 #else
 840   int flag = unlink(WXSTRINGCAST file);
 841 #endif
 842   return (flag == 0) ;
 843 }
 844
 845 bool wxMkdir(const wxString& dir)
 846 {
 847 #ifdef __VMS__
 848         return FALSE;
 849 #elif (defined(__GNUWIN32__) && !defined(__MINGW32__)) || !defined(__WXMSW__)
 850   return (mkdir (WXSTRINGCAST dir, S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) == 0);
 851 #else
 852   return (mkdir(WXSTRINGCAST dir) == 0);
 853 #endif
 854 }
 855
 856 bool wxRmdir(const wxString& dir, int WXUNUSED(flags))
 857 {
 858 #ifdef __VMS__
 859   return FALSE;
 860 #else
 861   return (rmdir(WXSTRINGCAST dir) == 0);
 862 #endif
 863 }
 864
 865 #if 0
 866 bool wxDirExists(const wxString& dir)
 867 {
 868 #ifdef __VMS__
 869   return FALSE;
 870 #elif !defined(__WXMSW__)
 871   struct stat sbuf;
 872   return (stat(dir, &sbuf) != -1) && S_ISDIR(sbuf.st_mode) ? TRUE : FALSE;
 873 #else
 874
 875   /* MATTHEW: [6] Always use same code for Win32, call FindClose */
 876 #if defined(__WIN32__)
 877   WIN32_FIND_DATA fileInfo;
 878 #else
 879 #ifdef __BORLANDC__
 880   struct ffblk fileInfo;
 881 #else
 882   struct find_t fileInfo;
 883 #endif
 884 #endif
 885
 886 #if defined(__WIN32__)
 887         HANDLE h = FindFirstFile((LPTSTR) WXSTRINGCAST dir,(LPWIN32_FIND_DATA)&fileInfo);
 888
 889         if (h==INVALID_HANDLE_VALUE)
 890          return FALSE;
 891         else {
 892          FindClose(h);
 893          return ((fileInfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY);
 894         }
 895 #else
 896   // In Borland findfirst has a different argument
 897   // ordering from _dos_findfirst. But _dos_findfirst
 898   // _should_ be ok in both MS and Borland... why not?
 899 #ifdef __BORLANDC__
 900   return ((findfirst(WXSTRINGCAST dir, &fileInfo, _A_SUBDIR) == 0  && (fileInfo.ff_attrib & _A_SUBDIR) != 0));
 901 #else
 902   return (((_dos_findfirst(WXSTRINGCAST dir, _A_SUBDIR, &fileInfo) == 0) && (fileInfo.attrib & _A_SUBDIR)) != 0);
 903 #endif
 904 #endif
 905
 906 #endif
 907 }
 908
 909 #endif
 910
 911 // does the path exists? (may have or not '/' or '\\' at the end)
 912 bool wxPathExists(const char *pszPathName)
 913 {
 914   // Windows API returns -1 from stat for "c:\dir\" if "c:\dir" exists
 915   // OTOH, we should change "d:" to "d:\" and leave "\" as is.
 916   wxString strPath(pszPathName);
 917   if ( wxEndsWithPathSeparator(pszPathName) && pszPathName[1] != '\0' )
 918     strPath.Last() = '\0';
 919
 920   struct stat st;
 921   return stat(strPath, &st) == 0 && (st.st_mode & S_IFDIR);
 922 }
 923
 924 // Get a temporary filename, opening and closing the file.
 925 char *wxGetTempFileName(const wxString& prefix, char *buf)
 926 {
 927 #ifdef __WXMSW__
 928
 929 #ifndef __WIN32__
 930   char tmp[144];
 931   ::GetTempFileName(0, WXSTRINGCAST prefix, 0, tmp);
 932 #else
 933   char tmp[MAX_PATH];
 934   char tmpPath[MAX_PATH];
 935   ::GetTempPath(MAX_PATH, tmpPath);
 936   ::GetTempFileName(tmpPath, WXSTRINGCAST prefix, 0, tmp);
 937 #endif
 938   if (buf) strcpy(buf, tmp);
 939   else buf = copystring(tmp);
 940   return buf;
 941
 942 #else
 943   static short last_temp = 0;   // cache last to speed things a bit
 944   // At most 1000 temp files to a process! We use a ring count.
 945   char tmp[100];
 946
 947   for (short suffix = last_temp + 1; suffix != last_temp; ++suffix %= 1000)
 948     {
 949       sprintf (tmp, "/tmp/%s%d.%03x", WXSTRINGCAST prefix, (int) getpid (), (int) suffix);
 950       if (!wxFileExists( tmp ))
 951         {
 952           // Touch the file to create it (reserve name)
 953           FILE *fd = fopen (tmp, "w");
 954           if (fd)
 955             fclose (fd);
 956           last_temp = suffix;
 957           if (buf)
 958             strcpy( buf, tmp);
 959           else
 960             buf = copystring( tmp );
 961           return buf;
 962         }
 963     }
 964   cerr << _("wxWindows: error finding temporary file name.\n");
 965   if (buf) buf[0] = 0;
 966   return NULL;
 967 #endif
 968 }
 969
 970 // Get first file name matching given wild card.
 971
 972 #ifdef __UNIX__
 973
 974 // Get first file name matching given wild card.
 975 // Flags are reserved for future use.
 976
 977 #ifndef __VMS__
 978 static DIR *wxDirStream = NULL;
 979 static char *wxFileSpec = NULL;
 980 static int wxFindFileFlags = 0;
 981 #endif
 982
 983 char *wxFindFirstFile(const char *spec, int flags)
 984 {
 985 #ifndef __VMS__
 986   if (wxDirStream)
 987     closedir(wxDirStream); // edz 941103: better housekeping
 988
 989   wxFindFileFlags = flags;
 990
 991   if (wxFileSpec)
 992     delete[] wxFileSpec;
 993   wxFileSpec = copystring(spec);
 994
 995   // Find path only so we can concatenate
 996   // found file onto path
 997   char *p = wxPathOnly(wxFileSpec);
 998
 999   /* MATTHEW: special case: path is really "/" */
1000   if (p && !*p && *wxFileSpec == '/')
1001     p = "/";
1002   /* MATTHEW: p is NULL => Local directory */
1003   if (!p)
1004     p = ".";
1005
1006   if ((wxDirStream=opendir(p))==NULL)
1007     return NULL;
1008
1009  /* MATTHEW: [5] wxFindNextFile can do the rest of the work */
1010   return wxFindNextFile();
1011 #endif
1012  // ifndef __VMS__
1013   return NULL;
1014 }
1015
1016 char *wxFindNextFile(void)
1017 {
1018 #ifndef __VMS__
1019   static char buf[400];
1020
1021   /* MATTHEW: [2] Don't crash if we read too many times */
1022   if (!wxDirStream)
1023     return NULL;
1024
1025   // Find path only so we can concatenate
1026   // found file onto path
1027   char *p = wxPathOnly(wxFileSpec);
1028   char *n = wxFileNameFromPath(wxFileSpec);
1029
1030   /* MATTHEW: special case: path is really "/" */
1031   if (p && !*p && *wxFileSpec == '/')
1032     p = "/";
1033
1034   // Do the reading
1035   struct dirent *nextDir;
1036   for (nextDir = readdir(wxDirStream); nextDir != NULL; nextDir = readdir(wxDirStream))
1037   {
1038
1039     /* MATTHEW: [5] Only return "." and ".." when they match, and only return
1040        directories when flags & wxDIR */
1041     if (wxMatchWild(n, nextDir->d_name)) {
1042       bool isdir;
1043
1044       buf[0] = 0;
1045       if (p && *p) {
1046         strcpy(buf, p);
1047         if (strcmp(p, "/") != 0)
1048           strcat(buf, "/");
1049       }
1050       strcat(buf, nextDir->d_name);
1051
1052       if ((strcmp(nextDir->d_name, ".") == 0) ||
1053           (strcmp(nextDir->d_name, "..") == 0)) {
1054         if (wxFindFileFlags && !(wxFindFileFlags & wxDIR))
1055           continue;
1056         isdir = TRUE;
1057       } else
1058         isdir = wxDirExists(buf);
1059
1060       if (!wxFindFileFlags
1061           || ((wxFindFileFlags & wxDIR) && isdir)
1062           || ((wxFindFileFlags & wxFILE) && !isdir))
1063         return buf;
1064     }
1065   }
1066   closedir(wxDirStream);
1067   wxDirStream = NULL;
1068 #endif
1069  // ifndef __VMS__
1070
1071   return NULL;
1072 }
1073
1074 #elif defined(__WXMSW__)
1075
1076 #ifdef __WIN32__
1077 HANDLE wxFileStrucHandle = INVALID_HANDLE_VALUE;
1078 WIN32_FIND_DATA wxFileStruc;
1079 #else
1080 #ifdef __BORLANDC__
1081 static struct ffblk wxFileStruc;
1082 #else
1083 static struct _find_t wxFileStruc;
1084 #endif
1085 #endif
1086 static wxString wxFileSpec = "";
1087 static int wxFindFileFlags;
1088
1089 char *wxFindFirstFile(const char *spec, int flags)
1090 {
1091   wxFileSpec = spec;
1092   wxFindFileFlags = flags; /* MATTHEW: [5] Remember flags */
1093
1094   // Find path only so we can concatenate
1095   // found file onto path
1096   wxString path1(wxFileSpec);
1097   char *p = wxPathOnly(WXSTRINGCAST path1);
1098   if (p && (strlen(p) > 0))
1099          strcpy(wxBuffer, p);
1100   else
1101          wxBuffer[0] = 0;
1102
1103 #ifdef __WIN32__
1104   if (wxFileStrucHandle != INVALID_HANDLE_VALUE)
1105          FindClose(wxFileStrucHandle);
1106
1107   wxFileStrucHandle = ::FindFirstFile(WXSTRINGCAST spec, &wxFileStruc);
1108
1109   if (wxFileStrucHandle == INVALID_HANDLE_VALUE)
1110          return NULL;
1111
1112   bool isdir = !!(wxFileStruc.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY);
1113
1114   if (isdir && !(flags & wxDIR))
1115          return wxFindNextFile();
1116   else if (!isdir && flags && !(flags & wxFILE))
1117          return wxFindNextFile();
1118
1119   if (wxBuffer[0] != 0)
1120          strcat(wxBuffer, "\\");
1121   strcat(wxBuffer, wxFileStruc.cFileName);
1122   return wxBuffer;
1123 #else
1124
1125   int flag = _A_NORMAL;
1126   if (flags & wxDIR) /* MATTHEW: [5] Use & */
1127     flag = _A_SUBDIR;
1128
1129 #ifdef __BORLANDC__
1130   if (findfirst(WXSTRINGCAST spec, &wxFileStruc, flag) == 0)
1131 #else
1132   if (_dos_findfirst(WXSTRINGCAST spec, flag, &wxFileStruc) == 0)
1133 #endif
1134   {
1135     /* MATTHEW: [5] Check directory flag */
1136     char attrib;
1137
1138 #ifdef __BORLANDC__
1139     attrib = wxFileStruc.ff_attrib;
1140 #else
1141     attrib = wxFileStruc.attrib;
1142 #endif
1143
1144     if (attrib & _A_SUBDIR) {
1145       if (!(wxFindFileFlags & wxDIR))
1146         return wxFindNextFile();
1147     } else if (wxFindFileFlags && !(wxFindFileFlags & wxFILE))
1148                 return wxFindNextFile();
1149
1150          if (wxBuffer[0] != 0)
1151                 strcat(wxBuffer, "\\");
1152
1153 #ifdef __BORLANDC__
1154          strcat(wxBuffer, wxFileStruc.ff_name);
1155 #else
1156          strcat(wxBuffer, wxFileStruc.name);
1157 #endif
1158          return wxBuffer;
1159   }
1160   else
1161     return NULL;
1162 #endif // __WIN32__
1163 }
1164
1165 char *wxFindNextFile(void)
1166 {
1167   // Find path only so we can concatenate
1168   // found file onto path
1169   wxString p2(wxFileSpec);
1170   char *p = wxPathOnly(WXSTRINGCAST p2);
1171   if (p && (strlen(p) > 0))
1172          strcpy(wxBuffer, p);
1173   else
1174          wxBuffer[0] = 0;
1175
1176  try_again:
1177
1178 #ifdef __WIN32__
1179   if (wxFileStrucHandle == INVALID_HANDLE_VALUE)
1180          return NULL;
1181
1182   bool success = (FindNextFile(wxFileStrucHandle, &wxFileStruc) != 0);
1183   if (!success) {
1184                 FindClose(wxFileStrucHandle);
1185       wxFileStrucHandle = INVALID_HANDLE_VALUE;
1186                 return NULL;
1187   }
1188
1189   bool isdir = !!(wxFileStruc.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY);
1190
1191   if (isdir && !(wxFindFileFlags & wxDIR))
1192     goto try_again;
1193   else if (!isdir && wxFindFileFlags && !(wxFindFileFlags & wxFILE))
1194          goto try_again;
1195
1196   if (wxBuffer[0] != 0)
1197     strcat(wxBuffer, "\\");
1198   strcat(wxBuffer, wxFileStruc.cFileName);
1199   return wxBuffer;
1200 #else
1201
1202 #ifdef __BORLANDC__
1203   if (findnext(&wxFileStruc) == 0)
1204 #else
1205   if (_dos_findnext(&wxFileStruc) == 0)
1206 #endif
1207   {
1208     /* MATTHEW: [5] Check directory flag */
1209     char attrib;
1210
1211 #ifdef __BORLANDC__
1212     attrib = wxFileStruc.ff_attrib;
1213 #else
1214     attrib = wxFileStruc.attrib;
1215 #endif
1216
1217     if (attrib & _A_SUBDIR) {
1218       if (!(wxFindFileFlags & wxDIR))
1219         goto try_again;
1220     } else if (wxFindFileFlags && !(wxFindFileFlags & wxFILE))
1221       goto try_again;
1222
1223
1224          if (wxBuffer[0] != 0)
1225       strcat(wxBuffer, "\\");
1226 #ifdef __BORLANDC__
1227          strcat(wxBuffer, wxFileStruc.ff_name);
1228 #else
1229          strcat(wxBuffer, wxFileStruc.name);
1230 #endif
1231          return wxBuffer;
1232   }
1233   else
1234     return NULL;
1235 #endif
1236 }
1237
1238 #endif
1239  // __WXMSW__
1240
1241 // Get current working directory.
1242 // If buf is NULL, allocates space using new, else
1243 // copies into buf.
1244 char *wxGetWorkingDirectory(char *buf, int sz)
1245 {
1246   if (!buf)
1247     buf = new char[sz+1];
1248 #ifdef _MSC_VER
1249   if (_getcwd(buf, sz) == NULL) {
1250 #else
1251   if (getcwd(buf, sz) == NULL) {
1252 #endif
1253     buf[0] = '.';
1254     buf[1] = '\0';
1255   }
1256   return buf;
1257 }
1258
1259 bool wxSetWorkingDirectory(const wxString& d)
1260 {
1261 #ifdef __UNIX__
1262   return (chdir(d) == 0);
1263 #elif defined(__WXMSW__)
1264
1265 #ifdef __WIN32__
1266   return (bool)(SetCurrentDirectory(d) != 0);
1267 #else
1268   // Must change drive, too.
1269   bool isDriveSpec = ((strlen(d) > 1) && (d[1] == ':'));
1270   if (isDriveSpec)
1271   {
1272     char firstChar = d[0];
1273
1274     // To upper case
1275     if (firstChar > 90)
1276       firstChar = firstChar - 32;
1277
1278     // To a drive number
1279     unsigned int driveNo = firstChar - 64;
1280     if (driveNo > 0)
1281     {
1282        unsigned int noDrives;
1283        _dos_setdrive(driveNo, &noDrives);
1284     }
1285   }
1286   bool success = (chdir(WXSTRINGCAST d) == 0);
1287
1288   return success;
1289 #endif
1290
1291 #endif
1292 }
1293
1294 bool wxEndsWithPathSeparator(const char *pszFileName)
1295 {
1296   size_t len = Strlen(pszFileName);
1297   if ( len == 0 )
1298     return FALSE;
1299   else
1300     return wxIsPathSeparator(pszFileName[len - 1]);
1301 }
1302
1303 // find a file in a list of directories, returns false if not found
1304 bool wxFindFileInPath(wxString *pStr, const char *pszPath, const char *pszFile)
1305 {
1306   // we assume that it's not empty
1307   wxCHECK_MSG( !IsEmpty(pszFile), FALSE,
1308                _("empty file name in wxFindFileInPath"));
1309
1310   // skip path separator in the beginning of the file name if present
1311   if ( wxIsPathSeparator(*pszFile) )
1312     pszFile++;
1313
1314   // copy the path (strtok will modify it)
1315   char *szPath = new char[strlen(pszPath) + 1];
1316   strcpy(szPath, pszPath);
1317
1318   wxString strFile;
1319   char *pc;
1320   for ( pc = strtok(szPath, PATH_SEP); pc; pc = strtok(NULL, PATH_SEP) ) {
1321     // search for the file in this directory
1322     strFile = pc;
1323     if ( !wxEndsWithPathSeparator(pc) )
1324       strFile += FILE_SEP_PATH;
1325     strFile += pszFile;
1326
1327     if ( FileExists(strFile) ) {
1328       *pStr = strFile;
1329       break;
1330     }
1331   }
1332
1333   delete [] szPath;
1334
1335   return pc != NULL;  // if true => we breaked from the loop
1336 }
1337
1338 void WXDLLEXPORT wxSplitPath(const char *pszFileName,
1339                              wxString *pstrPath,
1340                              wxString *pstrName,
1341                              wxString *pstrExt)
1342 {
1343   wxCHECK_RET( pszFileName, _("NULL file name in wxSplitPath") );
1344
1345   const char *pDot = strrchr(pszFileName, FILE_SEP_EXT);
1346   const char *pSepUnix = strrchr(pszFileName, FILE_SEP_PATH_UNIX);
1347   const char *pSepDos = strrchr(pszFileName, FILE_SEP_PATH_DOS);
1348
1349   // take the last of the two
1350   uint nPosUnix = pSepUnix ? pSepUnix - pszFileName : 0;
1351   uint nPosDos = pSepDos ? pSepDos - pszFileName : 0;
1352   if ( nPosDos > nPosUnix )
1353     nPosUnix = nPosDos;
1354 //  uint nLen = Strlen(pszFileName);
1355
1356   if ( pstrPath )
1357     *pstrPath = wxString(pszFileName, nPosUnix);
1358   if ( pDot ) {
1359     uint nPosDot = pDot - pszFileName;
1360     if ( pstrName )
1361       *pstrName = wxString(pszFileName + nPosUnix + 1, nPosDot - nPosUnix);
1362     if ( pstrExt )
1363       *pstrExt = wxString(pszFileName + nPosDot + 1);
1364   }
1365   else {
1366     if ( pstrName )
1367       *pstrName = wxString(pszFileName + nPosUnix + 1);
1368     if ( pstrExt )
1369       pstrExt->Empty();
1370   }
1371 }