dlls/msvcrt/dir.c

   1 /*
   2  * msvcrt.dll drive/directory functions
   3  *
   4  * Copyright 1996,1998 Marcus Meissner
   5  * Copyright 1996 Jukka Iivonen
   6  * Copyright 1997,2000 Uwe Bonnes
   7  * Copyright 2000 Jon Griffiths
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include "config.h"
  25 #include "wine/port.h"
  26
  27 #include <stdarg.h>
  28 #include <time.h>
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "winreg.h"
  33 #include "winternl.h"
  34 #include "wine/unicode.h"
  35 #include "msvcrt.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
  39
  40 /* INTERNAL: Translate WIN32_FIND_DATAA to finddata_t  */
  41 static void msvcrt_fttofd( const WIN32_FIND_DATAA *fd, struct MSVCRT__finddata_t* ft)
  42 {
  43   DWORD dw;
  44
  45   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
  46     ft->attrib = 0;
  47   else
  48     ft->attrib = fd->dwFileAttributes;
  49
  50   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
  51   ft->time_create = dw;
  52   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
  53   ft->time_access = dw;
  54   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
  55   ft->time_write = dw;
  56   ft->size = fd->nFileSizeLow;
  57   strcpy(ft->name, fd->cFileName);
  58 }
  59
  60 /* INTERNAL: Translate WIN32_FIND_DATAW to wfinddata_t  */
  61 static void msvcrt_wfttofd( const WIN32_FIND_DATAW *fd, struct MSVCRT__wfinddata_t* ft)
  62 {
  63   DWORD dw;
  64
  65   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
  66     ft->attrib = 0;
  67   else
  68     ft->attrib = fd->dwFileAttributes;
  69
  70   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
  71   ft->time_create = dw;
  72   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
  73   ft->time_access = dw;
  74   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
  75   ft->time_write = dw;
  76   ft->size = fd->nFileSizeLow;
  77   strcpyW(ft->name, fd->cFileName);
  78 }
  79
  80 /* INTERNAL: Translate WIN32_FIND_DATAA to finddatai64_t  */
  81 static void msvcrt_fttofdi64( const WIN32_FIND_DATAA *fd, struct MSVCRT__finddatai64_t* ft)
  82 {
  83   DWORD dw;
  84
  85   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
  86     ft->attrib = 0;
  87   else
  88     ft->attrib = fd->dwFileAttributes;
  89
  90   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
  91   ft->time_create = dw;
  92   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
  93   ft->time_access = dw;
  94   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
  95   ft->time_write = dw;
  96   ft->size = ((__int64)fd->nFileSizeHigh) << 32 | fd->nFileSizeLow;
  97   strcpy(ft->name, fd->cFileName);
  98 }
  99
 100 /* INTERNAL: Translate WIN32_FIND_DATAW to wfinddatai64_t  */
 101 static void msvcrt_wfttofdi64( const WIN32_FIND_DATAW *fd, struct MSVCRT__wfinddatai64_t* ft)
 102 {
 103   DWORD dw;
 104
 105   if (fd->dwFileAttributes == FILE_ATTRIBUTE_NORMAL)
 106     ft->attrib = 0;
 107   else
 108     ft->attrib = fd->dwFileAttributes;
 109
 110   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftCreationTime, &dw );
 111   ft->time_create = dw;
 112   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastAccessTime, &dw );
 113   ft->time_access = dw;
 114   RtlTimeToSecondsSince1970( (const LARGE_INTEGER *)&fd->ftLastWriteTime, &dw );
 115   ft->time_write = dw;
 116   ft->size = ((__int64)fd->nFileSizeHigh) << 32 | fd->nFileSizeLow;
 117   strcpyW(ft->name, fd->cFileName);
 118 }
 119
 120 /*********************************************************************
 121  *              _chdir (MSVCRT.@)
 122  *
 123  * Change the current working directory.
 124  *
 125  * PARAMS
 126  *  newdir [I] Directory to change to
 127  *
 128  * RETURNS
 129  *  Success: 0. The current working directory is set to newdir.
 130  *  Failure: -1. errno indicates the error.
 131  *
 132  * NOTES
 133  *  See SetCurrentDirectoryA.
 134  */
 135 int _chdir(const char * newdir)
 136 {
 137   if (!SetCurrentDirectoryA(newdir))
 138   {
 139     msvcrt_set_errno(newdir?GetLastError():0);
 140     return -1;
 141   }
 142   return 0;
 143 }
 144
 145 /*********************************************************************
 146  *              _wchdir (MSVCRT.@)
 147  *
 148  * Unicode version of _chdir.
 149  */
 150 int _wchdir(const MSVCRT_wchar_t * newdir)
 151 {
 152   if (!SetCurrentDirectoryW(newdir))
 153   {
 154     msvcrt_set_errno(newdir?GetLastError():0);
 155     return -1;
 156   }
 157   return 0;
 158 }
 159
 160 /*********************************************************************
 161  *              _chdrive (MSVCRT.@)
 162  *
 163  * Change the current drive.
 164  *
 165  * PARAMS
 166  *  newdrive [I] Drive number to change to (1 = 'A', 2 = 'B', ...)
 167  *
 168  * RETURNS
 169  *  Success: 0. The current drive is set to newdrive.
 170  *  Failure: -1. errno indicates the error.
 171  *
 172  * NOTES
 173  *  See SetCurrentDirectoryA.
 174  */
 175 int _chdrive(int newdrive)
 176 {
 177   WCHAR buffer[3] = {'A', ':', 0};
 178
 179   buffer[0] += newdrive - 1;
 180   if (!SetCurrentDirectoryW( buffer ))
 181   {
 182     msvcrt_set_errno(GetLastError());
 183     if (newdrive <= 0)
 184       *MSVCRT__errno() = MSVCRT_EACCES;
 185     return -1;
 186   }
 187   return 0;
 188 }
 189
 190 /*********************************************************************
 191  *              _findclose (MSVCRT.@)
 192  *
 193  * Close a handle returned by _findfirst().
 194  *
 195  * PARAMS
 196  *  hand [I] Handle to close
 197  *
 198  * RETURNS
 199  *  Success: 0. All resources associated with hand are freed.
 200  *  Failure: -1. errno indicates the error.
 201  *
 202  * NOTES
 203  *  See FindClose.
 204  */
 205 int _findclose(long hand)
 206 {
 207   TRACE(":handle %ld\n",hand);
 208   if (!FindClose((HANDLE)hand))
 209   {
 210     msvcrt_set_errno(GetLastError());
 211     return -1;
 212   }
 213   return 0;
 214 }
 215
 216 /*********************************************************************
 217  *              _findfirst (MSVCRT.@)
 218  *
 219  * Open a handle for iterating through a directory.
 220  *
 221  * PARAMS
 222  *  fspec [I] File specification of files to iterate.
 223  *  ft    [O] Information for the first file found.
 224  *
 225  * RETURNS
 226  *  Success: A handle suitable for passing to _findnext() and _findclose().
 227  *           ft is populated with the details of the found file.
 228  *  Failure: -1. errno indicates the error.
 229  *
 230  * NOTES
 231  *  See FindFirstFileA.
 232  */
 233 long MSVCRT__findfirst(const char * fspec, struct MSVCRT__finddata_t* ft)
 234 {
 235   WIN32_FIND_DATAA find_data;
 236   HANDLE hfind;
 237
 238   hfind  = FindFirstFileA(fspec, &find_data);
 239   if (hfind == INVALID_HANDLE_VALUE)
 240   {
 241     msvcrt_set_errno(GetLastError());
 242     return -1;
 243   }
 244   msvcrt_fttofd(&find_data,ft);
 245   TRACE(":got handle %p\n",hfind);
 246   return (long)hfind;
 247 }
 248
 249 /*********************************************************************
 250  *              _wfindfirst (MSVCRT.@)
 251  *
 252  * Unicode version of _findfirst.
 253  */
 254 long MSVCRT__wfindfirst(const MSVCRT_wchar_t * fspec, struct MSVCRT__wfinddata_t* ft)
 255 {
 256   WIN32_FIND_DATAW find_data;
 257   HANDLE hfind;
 258
 259   hfind  = FindFirstFileW(fspec, &find_data);
 260   if (hfind == INVALID_HANDLE_VALUE)
 261   {
 262     msvcrt_set_errno(GetLastError());
 263     return -1;
 264   }
 265   msvcrt_wfttofd(&find_data,ft);
 266   TRACE(":got handle %p\n",hfind);
 267   return (long)hfind;
 268 }
 269
 270 /*********************************************************************
 271  *              _findfirsti64 (MSVCRT.@)
 272  *
 273  * 64-bit version of _findfirst.
 274  */
 275 long MSVCRT__findfirsti64(const char * fspec, struct MSVCRT__finddatai64_t* ft)
 276 {
 277   WIN32_FIND_DATAA find_data;
 278   HANDLE hfind;
 279
 280   hfind  = FindFirstFileA(fspec, &find_data);
 281   if (hfind == INVALID_HANDLE_VALUE)
 282   {
 283     msvcrt_set_errno(GetLastError());
 284     return -1;
 285   }
 286   msvcrt_fttofdi64(&find_data,ft);
 287   TRACE(":got handle %p\n",hfind);
 288   return (long)hfind;
 289 }
 290
 291 /*********************************************************************
 292  *              _wfindfirsti64 (MSVCRT.@)
 293  *
 294  * Unicode version of _findfirsti64.
 295  */
 296 long MSVCRT__wfindfirsti64(const MSVCRT_wchar_t * fspec, struct MSVCRT__wfinddatai64_t* ft)
 297 {
 298   WIN32_FIND_DATAW find_data;
 299   HANDLE hfind;
 300
 301   hfind  = FindFirstFileW(fspec, &find_data);
 302   if (hfind == INVALID_HANDLE_VALUE)
 303   {
 304     msvcrt_set_errno(GetLastError());
 305     return -1;
 306   }
 307   msvcrt_wfttofdi64(&find_data,ft);
 308   TRACE(":got handle %p\n",hfind);
 309   return (long)hfind;
 310 }
 311
 312 /*********************************************************************
 313  *              _findnext (MSVCRT.@)
 314  *
 315  * Find the next file from a file search handle.
 316  *
 317  * PARAMS
 318  *  hand  [I] Handle to the search returned from _findfirst().
 319  *  ft    [O] Information for the file found.
 320  *
 321  * RETURNS
 322  *  Success: 0. ft is populated with the details of the found file.
 323  *  Failure: -1. errno indicates the error.
 324  *
 325  * NOTES
 326  *  See FindNextFileA.
 327  */
 328 int MSVCRT__findnext(long hand, struct MSVCRT__finddata_t * ft)
 329 {
 330   WIN32_FIND_DATAA find_data;
 331
 332   if (!FindNextFileA((HANDLE)hand, &find_data))
 333   {
 334     *MSVCRT__errno() = MSVCRT_ENOENT;
 335     return -1;
 336   }
 337
 338   msvcrt_fttofd(&find_data,ft);
 339   return 0;
 340 }
 341
 342 /*********************************************************************
 343  *              _wfindnext (MSVCRT.@)
 344  *
 345  * Unicode version of _findnext.
 346  */
 347 int MSVCRT__wfindnext(long hand, struct MSVCRT__wfinddata_t * ft)
 348 {
 349   WIN32_FIND_DATAW find_data;
 350
 351   if (!FindNextFileW((HANDLE)hand, &find_data))
 352   {
 353     *MSVCRT__errno() = MSVCRT_ENOENT;
 354     return -1;
 355   }
 356
 357   msvcrt_wfttofd(&find_data,ft);
 358   return 0;
 359 }
 360
 361 /*********************************************************************
 362  *              _findnexti64 (MSVCRT.@)
 363  *
 364  * 64-bit version of _findnext.
 365  */
 366 int MSVCRT__findnexti64(long hand, struct MSVCRT__finddatai64_t * ft)
 367 {
 368   WIN32_FIND_DATAA find_data;
 369
 370   if (!FindNextFileA((HANDLE)hand, &find_data))
 371   {
 372     *MSVCRT__errno() = MSVCRT_ENOENT;
 373     return -1;
 374   }
 375
 376   msvcrt_fttofdi64(&find_data,ft);
 377   return 0;
 378 }
 379
 380 /*********************************************************************
 381  *              _wfindnexti64 (MSVCRT.@)
 382  *
 383  * Unicode version of _findnexti64.
 384  */
 385 int MSVCRT__wfindnexti64(long hand, struct MSVCRT__wfinddatai64_t * ft)
 386 {
 387   WIN32_FIND_DATAW find_data;
 388
 389   if (!FindNextFileW((HANDLE)hand, &find_data))
 390   {
 391     *MSVCRT__errno() = MSVCRT_ENOENT;
 392     return -1;
 393   }
 394
 395   msvcrt_wfttofdi64(&find_data,ft);
 396   return 0;
 397 }
 398
 399 /*********************************************************************
 400  *              _getcwd (MSVCRT.@)
 401  *
 402  * Get the current working directory.
 403  *
 404  * PARAMS
 405  *  buf  [O] Destination for current working directory.
 406  *  size [I] Size of buf in characters
 407  *
 408  * RETURNS
 409  * Success: If buf is NULL, returns an allocated string containing the path.
 410  *          Otherwise populates buf with the path and returns it.
 411  * Failure: NULL. errno indicates the error.
 412  */
 413 char* _getcwd(char * buf, int size)
 414 {
 415   char dir[MAX_PATH];
 416   int dir_len = GetCurrentDirectoryA(MAX_PATH,dir);
 417
 418   if (dir_len < 1)
 419     return NULL; /* FIXME: Real return value untested */
 420
 421   if (!buf)
 422   {
 423     if (size < 0)
 424       return _strdup(dir);
 425     return msvcrt_strndup(dir,size);
 426   }
 427   if (dir_len >= size)
 428   {
 429     *MSVCRT__errno() = MSVCRT_ERANGE;
 430     return NULL; /* buf too small */
 431   }
 432   strcpy(buf,dir);
 433   return buf;
 434 }
 435
 436 /*********************************************************************
 437  *              _wgetcwd (MSVCRT.@)
 438  *
 439  * Unicode version of _getcwd.
 440  */
 441 MSVCRT_wchar_t* _wgetcwd(MSVCRT_wchar_t * buf, int size)
 442 {
 443   MSVCRT_wchar_t dir[MAX_PATH];
 444   int dir_len = GetCurrentDirectoryW(MAX_PATH,dir);
 445
 446   if (dir_len < 1)
 447     return NULL; /* FIXME: Real return value untested */
 448
 449   if (!buf)
 450   {
 451     if (size < 0)
 452       return _wcsdup(dir);
 453     return msvcrt_wstrndup(dir,size);
 454   }
 455   if (dir_len >= size)
 456   {
 457     *MSVCRT__errno() = MSVCRT_ERANGE;
 458     return NULL; /* buf too small */
 459   }
 460   strcpyW(buf,dir);
 461   return buf;
 462 }
 463
 464 /*********************************************************************
 465  *              _getdrive (MSVCRT.@)
 466  *
 467  * Get the current drive number.
 468  *
 469  * PARAMS
 470  *  None.
 471  *
 472  * RETURNS
 473  *  Success: The drive letter number from 1 to 26 ("A:" to "Z:").
 474  *  Failure: 0.
 475  */
 476 int _getdrive(void)
 477 {
 478     WCHAR buffer[MAX_PATH];
 479     if (GetCurrentDirectoryW( MAX_PATH, buffer ) &&
 480         buffer[0] >= 'A' && buffer[0] <= 'z' && buffer[1] == ':')
 481         return toupperW(buffer[0]) - 'A' + 1;
 482     return 0;
 483 }
 484
 485 /*********************************************************************
 486  *              _getdcwd (MSVCRT.@)
 487  *
 488  * Get the current working directory on a given disk.
 489  *
 490  * PARAMS
 491  *  drive [I] Drive letter to get the current working directory from.
 492  *  buf   [O] Destination for the current working directory.
 493  *  size  [I] Length of drive in characters.
 494  *
 495  * RETURNS
 496  *  Success: If drive is NULL, returns an allocated string containing the path.
 497  *           Otherwise populates drive with the path and returns it.
 498  *  Failure: NULL. errno indicates the error.
 499  */
 500 char* _getdcwd(int drive, char * buf, int size)
 501 {
 502   static char* dummy;
 503
 504   TRACE(":drive %d(%c), size %d\n",drive, drive + 'A' - 1, size);
 505
 506   if (!drive || drive == _getdrive())
 507     return _getcwd(buf,size); /* current */
 508   else
 509   {
 510     char dir[MAX_PATH];
 511     char drivespec[4] = {'A', ':', 0};
 512     int dir_len;
 513
 514     drivespec[0] += drive - 1;
 515     if (GetDriveTypeA(drivespec) < DRIVE_REMOVABLE)
 516     {
 517       *MSVCRT__errno() = MSVCRT_EACCES;
 518       return NULL;
 519     }
 520
 521     dir_len = GetFullPathNameA(drivespec,MAX_PATH,dir,&dummy);
 522     if (dir_len >= size || dir_len < 1)
 523     {
 524       *MSVCRT__errno() = MSVCRT_ERANGE;
 525       return NULL; /* buf too small */
 526     }
 527
 528     TRACE(":returning '%s'\n", dir);
 529     if (!buf)
 530       return _strdup(dir); /* allocate */
 531
 532     strcpy(buf,dir);
 533   }
 534   return buf;
 535 }
 536
 537 /*********************************************************************
 538  *              _wgetdcwd (MSVCRT.@)
 539  *
 540  * Unicode version of _wgetdcwd.
 541  */
 542 MSVCRT_wchar_t* _wgetdcwd(int drive, MSVCRT_wchar_t * buf, int size)
 543 {
 544   static MSVCRT_wchar_t* dummy;
 545
 546   TRACE(":drive %d(%c), size %d\n",drive, drive + 'A' - 1, size);
 547
 548   if (!drive || drive == _getdrive())
 549     return _wgetcwd(buf,size); /* current */
 550   else
 551   {
 552     MSVCRT_wchar_t dir[MAX_PATH];
 553     MSVCRT_wchar_t drivespec[4] = {'A', ':', '\\', 0};
 554     int dir_len;
 555
 556     drivespec[0] += drive - 1;
 557     if (GetDriveTypeW(drivespec) < DRIVE_REMOVABLE)
 558     {
 559       *MSVCRT__errno() = MSVCRT_EACCES;
 560       return NULL;
 561     }
 562
 563     dir_len = GetFullPathNameW(drivespec,MAX_PATH,dir,&dummy);
 564     if (dir_len >= size || dir_len < 1)
 565     {
 566       *MSVCRT__errno() = MSVCRT_ERANGE;
 567       return NULL; /* buf too small */
 568     }
 569
 570     TRACE(":returning %s\n", debugstr_w(dir));
 571     if (!buf)
 572       return _wcsdup(dir); /* allocate */
 573     strcpyW(buf,dir);
 574   }
 575   return buf;
 576 }
 577
 578 /*********************************************************************
 579  *              _getdiskfree (MSVCRT.@)
 580  *
 581  * Get information about the free space on a drive.
 582  *
 583  * PARAMS
 584  *  disk [I] Drive number to get information about (1 = 'A', 2 = 'B', ...)
 585  *  info [O] Destination for the resulting information.
 586  *
 587  * RETURNS
 588  *  Success: 0. info is updated with the free space information.
 589  *  Failure: An error code from GetLastError().
 590  *
 591  * NOTES
 592  *  See GetLastError().
 593  */
 594 unsigned int MSVCRT__getdiskfree(unsigned int disk, struct MSVCRT__diskfree_t * d)
 595 {
 596   WCHAR drivespec[4] = {'@', ':', '\\', 0};
 597   DWORD ret[4];
 598   unsigned int err;
 599
 600   if (disk > 26)
 601     return ERROR_INVALID_PARAMETER; /* MSVCRT doesn't set errno here */
 602
 603   drivespec[0] += disk; /* make a drive letter */
 604
 605   if (GetDiskFreeSpaceW(disk==0?NULL:drivespec,ret,ret+1,ret+2,ret+3))
 606   {
 607     d->sectors_per_cluster = (unsigned)ret[0];
 608     d->bytes_per_sector = (unsigned)ret[1];
 609     d->avail_clusters = (unsigned)ret[2];
 610     d->total_clusters = (unsigned)ret[3];
 611     return 0;
 612   }
 613   err = GetLastError();
 614   msvcrt_set_errno(err);
 615   return err;
 616 }
 617
 618 /*********************************************************************
 619  *              _mkdir (MSVCRT.@)
 620  *
 621  * Create a directory.
 622  *
 623  * PARAMS
 624  *  newdir [I] Name of directory to create.
 625  *
 626  * RETURNS
 627  *  Success: 0. The directory indicated by newdir is created.
 628  *  Failure: -1. errno indicates the error.
 629  *
 630  * NOTES
 631  *  See CreateDirectoryA.
 632  */
 633 int _mkdir(const char * newdir)
 634 {
 635   if (CreateDirectoryA(newdir,NULL))
 636     return 0;
 637   msvcrt_set_errno(GetLastError());
 638   return -1;
 639 }
 640
 641 /*********************************************************************
 642  *              _wmkdir (MSVCRT.@)
 643  *
 644  * Unicode version of _mkdir.
 645  */
 646 int _wmkdir(const MSVCRT_wchar_t* newdir)
 647 {
 648   if (CreateDirectoryW(newdir,NULL))
 649     return 0;
 650   msvcrt_set_errno(GetLastError());
 651   return -1;
 652 }
 653
 654 /*********************************************************************
 655  *              _rmdir (MSVCRT.@)
 656  *
 657  * Delete a directory.
 658  *
 659  * PARAMS
 660  *  dir [I] Name of directory to delete.
 661  *
 662  * RETURNS
 663  *  Success: 0. The directory indicated by newdir is deleted.
 664  *  Failure: -1. errno indicates the error.
 665  *
 666  * NOTES
 667  *  See RemoveDirectoryA.
 668  */
 669 int _rmdir(const char * dir)
 670 {
 671   if (RemoveDirectoryA(dir))
 672     return 0;
 673   msvcrt_set_errno(GetLastError());
 674   return -1;
 675 }
 676
 677 /*********************************************************************
 678  *              _wrmdir (MSVCRT.@)
 679  *
 680  * Unicode version of _rmdir.
 681  */
 682 int _wrmdir(const MSVCRT_wchar_t * dir)
 683 {
 684   if (RemoveDirectoryW(dir))
 685     return 0;
 686   msvcrt_set_errno(GetLastError());
 687   return -1;
 688 }
 689
 690 /*********************************************************************
 691  *              _wsplitpath (MSVCRT.@)
 692  *
 693  * Unicode version of _splitpath.
 694  */
 695 void _wsplitpath(const MSVCRT_wchar_t *inpath, MSVCRT_wchar_t *drv, MSVCRT_wchar_t *dir,
 696                  MSVCRT_wchar_t *fname, MSVCRT_wchar_t *ext )
 697 {
 698     const MSVCRT_wchar_t *p, *end;
 699
 700     if (inpath[0] && inpath[1] == ':')
 701     {
 702         if (drv)
 703         {
 704             drv[0] = inpath[0];
 705             drv[1] = inpath[1];
 706             drv[2] = 0;
 707         }
 708         inpath += 2;
 709     }
 710     else if (drv) drv[0] = 0;
 711
 712     /* look for end of directory part */
 713     end = NULL;
 714     for (p = inpath; *p; p++) if (*p == '/' || *p == '\\') end = p + 1;
 715
 716     if (end)  /* got a directory */
 717     {
 718         if (dir)
 719         {
 720             memcpy( dir, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
 721             dir[end - inpath] = 0;
 722         }
 723         inpath = end;
 724     }
 725     else if (dir) dir[0] = 0;
 726
 727     /* look for extension: what's after the last dot */
 728     end = NULL;
 729     for (p = inpath; *p; p++) if (*p == '.') end = p;
 730
 731     if (!end) end = p; /* there's no extension */
 732
 733     if (fname)
 734     {
 735         memcpy( fname, inpath, (end - inpath) * sizeof(MSVCRT_wchar_t) );
 736         fname[end - inpath] = 0;
 737     }
 738     if (ext) strcpyW( ext, end );
 739 }
 740
 741 /* INTERNAL: Helper for _fullpath. Modified PD code from 'snippets'. */
 742 static void wmsvcrt_fln_fix(MSVCRT_wchar_t *path)
 743 {
 744   int dir_flag = 0, root_flag = 0;
 745   MSVCRT_wchar_t *r, *p, *q, *s;
 746   MSVCRT_wchar_t szbsdot[] = { '\\', '.', 0 };
 747
 748   /* Skip drive */
 749   if (NULL == (r = strrchrW(path, ':')))
 750     r = path;
 751   else
 752     ++r;
 753
 754   /* Ignore leading slashes */
 755   while ('\\' == *r)
 756     if ('\\' == r[1])
 757       strcpyW(r, &r[1]);
 758     else
 759     {
 760       root_flag = 1;
 761       ++r;
 762     }
 763
 764   p = r; /* Change "\\" to "\" */
 765   while (NULL != (p = strchrW(p, '\\')))
 766     if ('\\' ==  p[1])
 767       strcpyW(p, &p[1]);
 768     else
 769       ++p;
 770
 771   while ('.' == *r) /* Scrunch leading ".\" */
 772   {
 773     if ('.' == r[1])
 774     {
 775       /* Ignore leading ".." */
 776       for (p = (r += 2); *p && (*p != '\\'); ++p)
 777         ;
 778     }
 779     else
 780     {
 781       for (p = r + 1 ;*p && (*p != '\\'); ++p)
 782         ;
 783     }
 784     strcpyW(r, p + ((*p) ? 1 : 0));
 785   }
 786
 787   while ('\\' == path[strlenW(path)-1])   /* Strip last '\\' */
 788   {
 789     dir_flag = 1;
 790     path[strlenW(path)-1] = '\0';
 791   }
 792
 793   s = r;
 794
 795   /* Look for "\." in path */
 796
 797   while (NULL != (p = strstrW(s, szbsdot)))
 798   {
 799     if ('.' == p[2])
 800     {
 801       /* Execute this section if ".." found */
 802       q = p - 1;
 803       while (q > r)           /* Backup one level           */
 804       {
 805         if (*q == '\\')
 806           break;
 807         --q;
 808       }
 809       if (q > r)
 810       {
 811         strcpyW(q, p + 3);
 812         s = q;
 813       }
 814       else if ('.' != *q)
 815       {
 816         strcpyW(q + ((*q == '\\') ? 1 : 0),
 817                 p + 3 + ((*(p + 3)) ? 1 : 0));
 818         s = q;
 819       }
 820       else  s = ++p;
 821     }
 822     else
 823     {
 824       /* Execute this section if "." found */
 825       q = p + 2;
 826       for ( ;*q && (*q != '\\'); ++q)
 827         ;
 828       strcpyW (p, q);
 829     }
 830   }
 831
 832   if (root_flag)  /* Embedded ".." could have bubbled up to root  */
 833   {
 834     for (p = r; *p && ('.' == *p || '\\' == *p); ++p)
 835       ;
 836     if (r != p)
 837       strcpyW(r, p);
 838   }
 839
 840   if (dir_flag)
 841   {
 842     MSVCRT_wchar_t szbs[] = { '\\', 0 };
 843
 844     strcatW(path, szbs);
 845   }
 846 }
 847
 848 /*********************************************************************
 849  *              _wfullpath (MSVCRT.@)
 850  *
 851  * Unicode version of _fullpath.
 852  */
 853 MSVCRT_wchar_t *_wfullpath(MSVCRT_wchar_t * absPath, const MSVCRT_wchar_t* relPath, MSVCRT_size_t size)
 854 {
 855   MSVCRT_wchar_t drive[5],dir[MAX_PATH],file[MAX_PATH],ext[MAX_PATH];
 856   MSVCRT_wchar_t res[MAX_PATH];
 857   size_t len;
 858   MSVCRT_wchar_t szbs[] = { '\\', 0 };
 859
 860
 861   res[0] = '\0';
 862
 863   if (!relPath || !*relPath)
 864     return _wgetcwd(absPath, size);
 865
 866   if (size < 4)
 867   {
 868     *MSVCRT__errno() = MSVCRT_ERANGE;
 869     return NULL;
 870   }
 871
 872   TRACE(":resolving relative path '%s'\n",debugstr_w(relPath));
 873
 874   _wsplitpath(relPath, drive, dir, file, ext);
 875
 876   /* Get Directory and drive into 'res' */
 877   if (!dir[0] || (dir[0] != '/' && dir[0] != '\\'))
 878   {
 879     /* Relative or no directory given */
 880     _wgetdcwd(drive[0] ? toupper(drive[0]) - 'A' + 1 :  0, res, MAX_PATH);
 881     strcatW(res,szbs);
 882     if (dir[0])
 883       strcatW(res,dir);
 884     if (drive[0])
 885       res[0] = drive[0]; /* If given a drive, preserve the letter case */
 886   }
 887   else
 888   {
 889     strcpyW(res,drive);
 890     strcatW(res,dir);
 891   }
 892
 893   strcatW(res,szbs);
 894   strcatW(res, file);
 895   strcatW(res, ext);
 896   wmsvcrt_fln_fix(res);
 897
 898   len = strlenW(res);
 899   if (len >= MAX_PATH || len >= (size_t)size)
 900     return NULL; /* FIXME: errno? */
 901
 902   if (!absPath)
 903     return _wcsdup(res);
 904   strcpyW(absPath,res);
 905   return absPath;
 906 }
 907
 908 /* INTERNAL: Helper for _fullpath. Modified PD code from 'snippets'. */
 909 static void msvcrt_fln_fix(char *path)
 910 {
 911   int dir_flag = 0, root_flag = 0;
 912   char *r, *p, *q, *s;
 913
 914   /* Skip drive */
 915   if (NULL == (r = strrchr(path, ':')))
 916     r = path;
 917   else
 918     ++r;
 919
 920   /* Ignore leading slashes */
 921   while ('\\' == *r)
 922     if ('\\' == r[1])
 923       strcpy(r, &r[1]);
 924     else
 925     {
 926       root_flag = 1;
 927       ++r;
 928     }
 929
 930   p = r; /* Change "\\" to "\" */
 931   while (NULL != (p = strchr(p, '\\')))
 932     if ('\\' ==  p[1])
 933       strcpy(p, &p[1]);
 934     else
 935       ++p;
 936
 937   while ('.' == *r) /* Scrunch leading ".\" */
 938   {
 939     if ('.' == r[1])
 940     {
 941       /* Ignore leading ".." */
 942       for (p = (r += 2); *p && (*p != '\\'); ++p)
 943         ;
 944     }
 945     else
 946     {
 947       for (p = r + 1 ;*p && (*p != '\\'); ++p)
 948         ;
 949     }
 950     strcpy(r, p + ((*p) ? 1 : 0));
 951   }
 952
 953   while ('\\' == path[strlen(path)-1])   /* Strip last '\\' */
 954   {
 955     dir_flag = 1;
 956     path[strlen(path)-1] = '\0';
 957   }
 958
 959   s = r;
 960
 961   /* Look for "\." in path */
 962
 963   while (NULL != (p = strstr(s, "\\.")))
 964   {
 965     if ('.' == p[2])
 966     {
 967       /* Execute this section if ".." found */
 968       q = p - 1;
 969       while (q > r)           /* Backup one level           */
 970       {
 971         if (*q == '\\')
 972           break;
 973         --q;
 974       }
 975       if (q > r)
 976       {
 977         strcpy(q, p + 3);
 978         s = q;
 979       }
 980       else if ('.' != *q)
 981       {
 982         strcpy(q + ((*q == '\\') ? 1 : 0),
 983                p + 3 + ((*(p + 3)) ? 1 : 0));
 984         s = q;
 985       }
 986       else  s = ++p;
 987     }
 988     else
 989     {
 990       /* Execute this section if "." found */
 991       q = p + 2;
 992       for ( ;*q && (*q != '\\'); ++q)
 993         ;
 994       strcpy (p, q);
 995     }
 996   }
 997
 998   if (root_flag)  /* Embedded ".." could have bubbled up to root  */
 999   {
1000     for (p = r; *p && ('.' == *p || '\\' == *p); ++p)
1001       ;
1002     if (r != p)
1003       strcpy(r, p);
1004   }
1005
1006   if (dir_flag)
1007     strcat(path, "\\");
1008 }
1009
1010 /*********************************************************************
1011  *              _fullpath (MSVCRT.@)
1012  *
1013  * Create an absolute path from a relative path.
1014  *
1015  * PARAMS
1016  *  absPath [O] Destination for absolute path
1017  *  relPath [I] Relative path to convert to absolute
1018  *  size    [I] Length of absPath in characters.
1019  *
1020  * RETURNS
1021  * Success: If absPath is NULL, returns an allocated string containing the path.
1022  *          Otherwise populates absPath with the path and returns it.
1023  * Failure: NULL. errno indicates the error.
1024  */
1025 char *_fullpath(char * absPath, const char* relPath, unsigned int size)
1026 {
1027   char drive[5],dir[MAX_PATH],file[MAX_PATH],ext[MAX_PATH];
1028   char res[MAX_PATH];
1029   size_t len;
1030
1031   res[0] = '\0';
1032
1033   if (!relPath || !*relPath)
1034     return _getcwd(absPath, size);
1035
1036   if (size < 4)
1037   {
1038     *MSVCRT__errno() = MSVCRT_ERANGE;
1039     return NULL;
1040   }
1041
1042   TRACE(":resolving relative path '%s'\n",relPath);
1043
1044   _splitpath(relPath, drive, dir, file, ext);
1045
1046   /* Get Directory and drive into 'res' */
1047   if (!dir[0] || (dir[0] != '/' && dir[0] != '\\'))
1048   {
1049     /* Relative or no directory given */
1050     _getdcwd(drive[0] ? toupper(drive[0]) - 'A' + 1 :  0, res, MAX_PATH);
1051     strcat(res,"\\");
1052     if (dir[0])
1053       strcat(res,dir);
1054     if (drive[0])
1055       res[0] = drive[0]; /* If given a drive, preserve the letter case */
1056   }
1057   else
1058   {
1059     strcpy(res,drive);
1060     strcat(res,dir);
1061   }
1062
1063   strcat(res,"\\");
1064   strcat(res, file);
1065   strcat(res, ext);
1066   msvcrt_fln_fix(res);
1067
1068   len = strlen(res);
1069   if (len >= MAX_PATH || len >= (size_t)size)
1070     return NULL; /* FIXME: errno? */
1071
1072   if (!absPath)
1073     return _strdup(res);
1074   strcpy(absPath,res);
1075   return absPath;
1076 }
1077
1078 /*********************************************************************
1079  *              _makepath (MSVCRT.@)
1080  *
1081  * Create a pathname.
1082  *
1083  * PARAMS
1084  *  path      [O] Destination for created pathname
1085  *  drive     [I] Drive letter (e.g. "A:")
1086  *  directory [I] Directory
1087  *  filename  [I] Name of the file, excluding extension
1088  *  extension [I] File extension (e.g. ".TXT")
1089  *
1090  * RETURNS
1091  *  Nothing. If path is not large enough to hold the resulting pathname,
1092  *  random process memory will be overwritten.
1093  */
1094 VOID _makepath(char * path, const char * drive,
1095                const char *directory, const char * filename,
1096                const char * extension)
1097 {
1098     char ch;
1099     char tmpPath[MAX_PATH];
1100     TRACE("got %s %s %s %s\n", debugstr_a(drive), debugstr_a(directory),
1101           debugstr_a(filename), debugstr_a(extension) );
1102
1103     if ( !path )
1104         return;
1105
1106     tmpPath[0] = '\0';
1107     if (drive && drive[0])
1108     {
1109         tmpPath[0] = drive[0];
1110         tmpPath[1] = ':';
1111         tmpPath[2] = 0;
1112     }
1113     if (directory && directory[0])
1114     {
1115         strcat(tmpPath, directory);
1116         ch = tmpPath[strlen(tmpPath)-1];
1117         if (ch != '/' && ch != '\\')
1118             strcat(tmpPath,"\\");
1119     }
1120     if (filename && filename[0])
1121     {
1122         strcat(tmpPath, filename);
1123         if (extension && extension[0])
1124         {
1125             if ( extension[0] != '.' )
1126                 strcat(tmpPath,".");
1127             strcat(tmpPath,extension);
1128         }
1129     }
1130
1131     strcpy( path, tmpPath );
1132
1133     TRACE("returning %s\n",path);
1134 }
1135
1136 /*********************************************************************
1137  *              _wmakepath (MSVCRT.@)
1138  *
1139  * Unicode version of _wmakepath.
1140  */
1141 VOID _wmakepath(MSVCRT_wchar_t *path, const MSVCRT_wchar_t *drive, const MSVCRT_wchar_t *directory,
1142                 const MSVCRT_wchar_t *filename, const MSVCRT_wchar_t *extension)
1143 {
1144     MSVCRT_wchar_t ch;
1145     TRACE("%s %s %s %s\n", debugstr_w(drive), debugstr_w(directory),
1146           debugstr_w(filename), debugstr_w(extension));
1147
1148     if ( !path )
1149         return;
1150
1151     path[0] = 0;
1152     if (drive && drive[0])
1153     {
1154         path[0] = drive[0];
1155         path[1] = ':';
1156         path[2] = 0;
1157     }
1158     if (directory && directory[0])
1159     {
1160         strcatW(path, directory);
1161         ch = path[strlenW(path) - 1];
1162         if (ch != '/' && ch != '\\')
1163         {
1164             static const MSVCRT_wchar_t backslashW[] = {'\\',0};
1165             strcatW(path, backslashW);
1166         }
1167     }
1168     if (filename && filename[0])
1169     {
1170         strcatW(path, filename);
1171         if (extension && extension[0])
1172         {
1173             if ( extension[0] != '.' )
1174             {
1175                 static const MSVCRT_wchar_t dotW[] = {'.',0};
1176                 strcatW(path, dotW);
1177             }
1178             strcatW(path, extension);
1179         }
1180     }
1181
1182     TRACE("returning %s\n", debugstr_w(path));
1183 }
1184
1185 /*********************************************************************
1186  *              _searchenv (MSVCRT.@)
1187  *
1188  * Search for a file in a list of paths from an envronment variable.
1189  *
1190  * PARAMS
1191  *  file   [I] Name of the file to search for.
1192  *  env    [I] Name of the environment variable containing a list of paths.
1193  *  buf    [O] Destination for the found file path.
1194  *
1195  * RETURNS
1196  *  Nothing. If the file is not found, buf will contain an empty string
1197  *  and errno is set.
1198  */
1199 void _searchenv(const char* file, const char* env, char *buf)
1200 {
1201   char*envVal, *penv;
1202   char curPath[MAX_PATH];
1203
1204   *buf = '\0';
1205
1206   /* Try CWD first */
1207   if (GetFileAttributesA( file ) != INVALID_FILE_ATTRIBUTES)
1208   {
1209     GetFullPathNameA( file, MAX_PATH, buf, NULL );
1210     /* Sigh. This error is *always* set, regardless of success */
1211     msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1212     return;
1213   }
1214
1215   /* Search given environment variable */
1216   envVal = MSVCRT_getenv(env);
1217   if (!envVal)
1218   {
1219     msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1220     return;
1221   }
1222
1223   penv = envVal;
1224   TRACE(":searching for %s in paths %s\n", file, envVal);
1225
1226   do
1227   {
1228     char *end = penv;
1229
1230     while(*end && *end != ';') end++; /* Find end of next path */
1231     if (penv == end || !*penv)
1232     {
1233       msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1234       return;
1235     }
1236     memcpy(curPath, penv, end - penv);
1237     if (curPath[end - penv] != '/' || curPath[end - penv] != '\\')
1238     {
1239       curPath[end - penv] = '\\';
1240       curPath[end - penv + 1] = '\0';
1241     }
1242     else
1243       curPath[end - penv] = '\0';
1244
1245     strcat(curPath, file);
1246     TRACE("Checking for file %s\n", curPath);
1247     if (GetFileAttributesA( curPath ) != INVALID_FILE_ATTRIBUTES)
1248     {
1249       strcpy(buf, curPath);
1250       msvcrt_set_errno(ERROR_FILE_NOT_FOUND);
1251       return; /* Found */
1252     }
1253     penv = *end ? end + 1 : end;
1254   } while(1);
1255 }