harbour-core/harbour/source/rtl/direct.c

/*
 * $Id$
 */

/*
 * Harbour Project source code:
 * DIRECTORY() function
 *
 * Copyright 1999 Leslee Griffith <les.griffith@vantagesystems.ca>
 * www - http://www.harbour-project.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
 *
 * As a special exception, the Harbour Project gives permission for
 * additional uses of the text contained in its release of Harbour.
 *
 * The exception is that, if you link the Harbour libraries with other
 * files to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the Harbour library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the Harbour
 * Project under the name Harbour.  If you copy code from other
 * Harbour Project or Free Software Foundation releases into a copy of
 * Harbour, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for Harbour, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.
 *
 */

/*
 * Notes from the fringe... <ptucker@sympatico.ca>
 *
 * Clipper is a bit schizoid with the treatment of file attributes, but we've
 * emulated that weirdness here for your viewing amusement.
 *
 * In Clippers' homeworld of DOS, there are 5 basic attributes: 'A'rchive,
 * 'H'idden, 'S'ystem, 'R'eadonly and 'D'irectory.  In addition, a file can
 * have no attributes, and only 1 file per physical partition can have the
 * 'V'olume label.
 *
 * For a given file request, it is implied that the attribute mask includes
 * all attributes except 'H'idden, 'S'ystem, 'D'irectory and 'V'olume.
 * The returned file list will always include (for instance) 'R'eadOnly files
 * unless they also happen to be 'H'idden and that attribute was not requested.
 *
 * "V" is a special case - you will get back the entry that describes the
 * volume label for the drive implied by the filemask.
 *
 * Differences from the 'standard' (where supported):
 * - Filenames will be returned in the same case as they are stored in the
 *   directory.  Clipper (and VO too) will convert the names to upper case
 * - Filenames will be the full filename as supported by the OS in use.
 * - There are a number of additional file attributes returned.
 *   They are:
 *       'I' - DEVICE      File is a device
 *       'T' - TEMPORARY   File is a Temporary file
 *       'P' - SPARSE      File is Sparse
 *       'L' - REPARSE     File/Dir is a reparse point
 *       'C' - COMPRESSED  File/Dir is compressed
 *       'O' - OFFLINE     File/Dir is not online
 *       'X' - NOTINDEXED  Exclude File/Dir from Indexing Service
 *       'E' - ENCRYPTED   File/Dir is Encrypted
 *       'M' - VOLCOMP     Volume Supports Compression
 * - Clipper can sometimes drop the ReadOnly indication of directories.
 *   Harbour detects this correctly.
 *
 * TODO: - check that path support vis stat works on all platforms
 *       - UNC Support? ie: dir \\myserver\root
 *
 */

#include "hbapi.h"
#include "hbapifs.h"
#include "hbapiitm.h"

#include "directry.ch"

/* NOTE: 8.3 support should be added in a separate way, like 
         as a function which converts full names to 8.3 names, since 
         this issue is very much platform specific, and this is 
         not the only place which may need the conversion [vszakats]. */

HB_FUNC( DIRECTORY )
{
   char *    szDirSpec = hb_parc( 1 );
   char *    szAttributes = hb_parc( 2 );
   BOOL      fFree = FALSE;
   ULONG     ulMask;

   PHB_ITEM  pDir = hb_itemArrayNew( 0 );
   PHB_FFIND ffind;

   /* Get the passed attributes and convert them to Harbour Flags */

   ulMask = HB_FA_ARCHIVE
          | HB_FA_READONLY
          | HB_FA_DEVICE
          | HB_FA_TEMPORARY
          | HB_FA_SPARSE
          | HB_FA_REPARSE
          | HB_FA_COMPRESSED
          | HB_FA_OFFLINE
          | HB_FA_NOTINDEXED
          | HB_FA_ENCRYPTED
          | HB_FA_VOLCOMP;

   if( szAttributes && *szAttributes )
   {
      if( ( ulMask |= hb_fsAttrEncode( szAttributes ) ) & HB_FA_LABEL )
      {
         /* NOTE: This is Clipper Doc compatible. (not operationally) */
         ulMask = HB_FA_LABEL;
      }
   }

   if( szDirSpec && *szDirSpec )
   {
      szDirSpec = ( char * ) hb_fsNameConv( ( BYTE * ) szDirSpec, &fFree );
      if( *szDirSpec )
      {
         /* CA-Cl*pper compatible behavior - add all file mask when
          * last character is directory or drive separator
          */
         int iLen = strlen( szDirSpec ) - 1;
#ifdef OS_HAS_DRIVE_LETTER
         if( szDirSpec[ iLen ] == OS_PATH_DELIMITER ||
             szDirSpec[ iLen ] == OS_DRIVE_DELIMITER )
#else
         if( szDirSpec[ iLen ] == OS_PATH_DELIMITER )
#endif
         {
            if( fFree )
            {
               char * szTemp = hb_xstrcpy( NULL, szDirSpec, OS_FILE_MASK, NULL );
               hb_xfree( szDirSpec );
               szDirSpec = szTemp;
            }
            else
            {
               szDirSpec = hb_xstrcpy( NULL, szDirSpec, OS_FILE_MASK, NULL );
               fFree = TRUE;
            }
         }
      }
      else
      {
         if( fFree )
         {
            hb_xfree( szDirSpec );
            fFree = FALSE;
         }
         szDirSpec = ( char * ) OS_FILE_MASK;
      }
   }
   else
      szDirSpec = ( char * ) OS_FILE_MASK;

   /* Get the file list */

   if( ( ffind = hb_fsFindFirst( szDirSpec, ulMask ) ) != NULL )
   {
      PHB_ITEM pSubarray = hb_itemNew( NULL );

      do
      {
         char buffer[ 32 ];

         hb_arrayNew( pSubarray, F_LEN );
         hb_arraySetC   ( pSubarray, F_NAME, ffind->szName );
         hb_arraySetNInt( pSubarray, F_SIZE, ffind->size );
         hb_arraySetDL  ( pSubarray, F_DATE, ffind->lDate );
         hb_arraySetC   ( pSubarray, F_TIME, ffind->szTime );
         hb_arraySetC   ( pSubarray, F_ATTR, hb_fsAttrDecode( ffind->attr, buffer ) );

         /* Don't exit when array limit is reached */
         hb_arrayAddForward( pDir, pSubarray );
      }
      while( hb_fsFindNext( ffind ) );

      hb_itemRelease( pSubarray );

      hb_fsFindClose( ffind );
   }

   if( fFree )
      hb_xfree( szDirSpec );

   hb_itemReturnRelease( pDir );
}