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/*
** SWISH++
** file_index.h
**
** Copyright (C) 1998 Paul J. Lucas
**
** 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef file_index_H
#define file_index_H
// standard
#include <cstddef> /* for ptrdiff_t */
#include <iterator>
#include <sys/types.h> /* for off_t */
// local
#include "fake_ansi.h"
#include "file_vector.h"
//*****************************************************************************
//
// SYNOPSIS
//
class file_index
//
// DESCRIPTION
//
// An instance of this class is used to access the file portion of a
// generated index, i.e., access the (partial) path name of the ith file
// is in the range [0,size).
//
// SEE ALSO
//
// file_vector.[ch]
// word_index.[ch]
//
//*****************************************************************************
{
public:
////////// typedefs ///////////////////////////////////////////////////
typedef long size_type;
typedef ptrdiff_t difference_type;
typedef char* value_type;
typedef char** pointer;
typedef char const** const_pointer;
typedef char* reference;
typedef char const* const_reference;
////////// constructors ///////////////////////////////////////////////
file_index() { }
file_index( file_vector<char> const &file ) { set_index_file( file ); }
////////// members functions //////////////////////////////////////////
void set_index_file( file_vector<char> const& );
size_type size() const { return num_files_; }
const_reference operator[]( size_type i ) const {
return begin_ + offset_[ i ];
}
private:
file_vector<char>::const_iterator begin_;
size_type num_files_;
off_t const *offset_;
};
#endif /* file_index_H */
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