/*
 *  Baltisot
 *  Copyright (C) 1999-2008 Nicolas "Pixel" Noble
 *
 *  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 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __HANDLE_H__
#define __HANDLE_H__

#include <sys/types.h>
#include <time.h>

#include <zlib.h>
#include <iostream>
#include <BString.h>
#include <Exceptions.h>

class Handle : public Base {
  public:
      Handle(const Handle &);
      virtual ~Handle();
    virtual ssize_t read(void * buf, size_t count) throw (GeneralException);
    virtual ssize_t write(const void * buf, size_t count) throw (GeneralException);
    Uint8 readU8();
    Uint16 readU16();
    Uint32 readU32();
    float readFloat();
    double readDouble();
    void writeU8(Uint8);
    void writeU16(Uint16);
    void writeU32(Uint32);
    void writeFloat(float);
    void writeDouble(double);
    void copyto(Handle *, ssize_t = -1);
    void copyfrom(Handle *, ssize_t = -1);
    bool IsClosed(void) const;
    bool IsNonBlock(void) const;
    void SetNonBlock(void);
    virtual bool CanRead() const;
    virtual bool CanWrite() const;
    virtual bool CanSeek() const;
    virtual off_t seek(off_t, int = SEEK_SET) throw (GeneralException);
    virtual off_t tell() const;
    virtual String GetName() const;
    virtual ssize_t GetSize() const;
    virtual time_t GetModif() const;
    void close() throw (GeneralException);
    int GetHandle();
    void * GetHFile();
    virtual bool CanWatch() const;
    virtual int Dup() const throw (GeneralException);
    virtual void SetZ(int = 9) throw (GeneralException);
    virtual void Flush();

    void * mmap(off_t = 0, size_t = -1) throw (GeneralException);
    void munmap() throw (GeneralException);
    
    static int GetNbHandles();
    static int zlib_inflate(Handle * in, Handle * out) throw (GeneralException);
    static int zlib_deflate(Handle * in, Handle * out) throw (GeneralException);
#ifdef HAVE_UCL
    static int ucl_compress(Handle * in, Handle * out, int len_in = -1) throw (GeneralException);
    static int ucl_decompress(Handle * in, Handle * out, unsigned int len_out, int len_in = -1) throw (GeneralException);
    static int ucl_overlap(Handle * in, unsigned int len_out, int len_in = -1) throw (GeneralException);
#endif
  protected:
      Handle(int h);
    int GetHandle() const;
    off_t itell;
    void * hFile;
    virtual ssize_t nwrite(const void *, size_t) throw (GeneralException);
    virtual ssize_t nread(void *, size_t) throw (GeneralException);
    virtual int ndup() const throw (GeneralException);
    virtual int nclose() throw (GeneralException);
    void tagclose();
  private:
    ssize_t uwrite(const void *, size_t) throw (GeneralException);
    ssize_t uread(void *, size_t);
    int h;
    bool closed, nonblock;
    gzFile zfile;
    z_stream zstrm;
    int z, c;
    void * hMapObject;
    bool mapped;
    size_t maplength;
    void * mappedarea;
    static int nb_handles;
};

Handle & operator<<(Handle &, const String &);
Handle & operator>>(Handle &, String &) throw (GeneralException);

void copy(Handle *, Handle *, ssize_t = -1);

#endif