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-------------------------------------------------------------------------------
-- (C) Altran Praxis Limited
-------------------------------------------------------------------------------
--
-- The SPARK toolset is free software; you can redistribute it and/or modify it
-- under terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 3, or (at your option) any later
-- version. The SPARK toolset 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 distributed with the SPARK toolset; see file
-- COPYING3. If not, go to http://www.gnu.org/licenses for a complete copy of
-- the license.
--
--=============================================================================
--------------------------------------------------------------------------------
--Synopsis: --
-- --
--Package for reading the file structure on the disc. This package is --
--OS independent, and calls OSDirectory.Scan to perform the actual directory --
--scan. --
-- --
--------------------------------------------------------------------------------
with FatalErrors, FileDetails, FileHeap, Heap, OSDirectory;
use type FileDetails.FileTypes;
package body FindFiles is
---------------------------------------------------------------------------
procedure Scan (StartDirectory : in E_Strings.T) is
DetailsSuccess : Boolean;
DirectoryIsResolved : Boolean;
FileType : FileDetails.FileTypes;
ListIndex : Heap.Atom;
Name : E_Strings.T;
NextListIndex : Heap.Atom;
NextSuccess : Boolean := True;
UnResolvedDirFound : Boolean := True;
begin
-- initialize the FileHeap
FileHeap.Initialize (StartDirectory);
while UnResolvedDirFound loop
UnResolvedDirFound := False;
-- start at beginning of linked list
ListIndex := FileHeap.FirstEntry;
-- while not end of list
while NextSuccess loop
-- get entry
--# accept F, 10, Name, "Name unused here";
FileHeap.Details (ListIndex, DetailsSuccess, Name, FileType, DirectoryIsResolved);
--# end accept;
if not DetailsSuccess then
FatalErrors.Process (FatalErrors.Data_Structure_Inconsistency, E_Strings.Empty_String);
end if;
-- if unresolved directory
if FileType = FileDetails.Directory and not DirectoryIsResolved then
-- read directory and insert items in list
OSDirectory.Scan (ListIndex);
-- mark directory as resolved
FileHeap.MarkDirectoryResolved (ListIndex);
UnResolvedDirFound := True;
end if;
-- go to next entry
if DetailsSuccess then
FileHeap.Next (ListIndex, NextSuccess, NextListIndex);
ListIndex := NextListIndex;
end if;
end loop;
end loop;
--# accept F, 33, Name, "Name unused here";
end Scan;
end FindFiles;
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