/*

 * lftp - file transfer program

 *

 * Copyright (c) 1996-2012 by Alexander V. Lukyanov (lav@yars.free.net)

 *

 * 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 3 of the License, 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 program.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef LSCACHE_H

#define LSCACHE_H

#include <time.h>

#include "Cache.h"

#include "FileAccess.h"

class Buffer;

class FileAccess;

class LsCacheEntryLoc

{

   friend class LsCache;

   xstring_c arg;

   SMTaskRef<FileAccess> loc; // no FileAccessRef -> no reuse here

   int	 mode;

public:

   bool Matches(const FileAccess *p_loc,const char *a,int m);

   LsCacheEntryLoc(const FileAccess *p_loc,const char *a,int m);

   int EstimateSize() const { return xstrlen(arg)+(arg!=0); }

   const char *GetClosure() const;

};

class LsCacheEntryData

{

   int	 err_code;

   xstring data;

   Ref<FileSet> afset;    // associated file set

public:

   LsCacheEntryData(int e,const char *d,int l,const FileSet *fs);

   void SetData(int e,const char *d,int l,const FileSet *fs);

   void GetData(int *e,const char **d,int *l,const FileSet **fs);

   const FileSet *GetFileSet(const FileAccess *parser);

   void UpdateFileSet(const FileSet *fs) { if(afset) afset->Merge(fs); }

   int EstimateSize() const { return data.length()+(afset?afset->EstimateMemory():0); }

};

class LsCacheEntry : public CacheEntry, public LsCacheEntryLoc, public LsCacheEntryData

{

public:

   int EstimateSize() const;

   LsCacheEntry(const FileAccess *p_loc,const char *a,int m,int e,const char *d,int l,const FileSet *fs);

};

class LsCache : public Cache

{

   LsCacheEntry *Find(const FileAccess *p_loc,const char *a,int m);

   LsCacheEntry *IterateFirst() { return (LsCacheEntry*)Cache::IterateFirst(); }

   LsCacheEntry *IterateNext()  { return (LsCacheEntry*)Cache::IterateNext(); }

   LsCacheEntry *IterateDelete(){ return (LsCacheEntry*)Cache::IterateDelete(); }

public:

   LsCache();

   void Add(const FileAccess *p_loc,const char *a,int m,int err,const char *d,int l,const FileSet *f=0);

   void Add(const FileAccess *p_loc,const char *a,int m,int err,const Buffer *ubuf,const FileSet *f=0);

   bool Find(const FileAccess *p_loc,const char *a,int m,int *err,const char **d, int *l,const FileSet **f=0);

   const FileSet *FindFileSet(const FileAccess *p_loc,const char *a,int m);

   void UpdateFileSet(const FileAccess *p_loc,const char *a,int m,const FileSet *fs);

   int IsDirectory(const FileAccess *p_loc,const char *dir);

   void SetDirectory(const FileAccess *p_loc, const char *path, bool dir);

   enum change_mode { FILE_CHANGED, DIR_CHANGED, TREE_CHANGED };

   void Changed(change_mode m,const FileAccess *f,const char *what);

   void FileChanged(const FileAccess *f,const char *file)

      {

	 Changed(FILE_CHANGED,f,file);

      }

   void DirectoryChanged(const FileAccess *f,const char *dir)

      {

	 Changed(DIR_CHANGED,f,dir);

      }

   void TreeChanged(const FileAccess *f,const char *dir)

      {

	 Changed(TREE_CHANGED,f,dir);

      }

   void List();

};

#endif//LSCACHE_H