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/*
** SWISH++
** file_index.c
**
** 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.
*/
// local
#include "fake_ansi.h"
#include "file_index.h"
//*****************************************************************************
//
// SYNOPSIS
//
void file_index::set_index_file( file_vector<char> const &file )
//
// DESCRIPTION
//
// Set the index file to use by setting data members to the proper
// positions withing the index file.
//
// CAVEAT
//
// Ideally, this function would be part of the constructor, but the name
// of the index file can be passed in via the command line and that isn't
// parsed until after the instance is constructed.
//
// SEE ALSO
//
// index.c write_full_index() -- format of index file
//
//*****************************************************************************
{
begin_ = file.begin();
long const *const p = REINTERPRET_CAST( long const* )( begin_ );
long const num_words = p[ 0 ];
long const *const q = REINTERPRET_CAST( long const* )(
REINTERPRET_CAST( char const* )( begin_ )
+ sizeof( num_words ) + num_words * sizeof( off_t )
);
num_files_ = q[ 0 ];
offset_ = STATIC_CAST( off_t const* )( &q[ 1 ] );
}
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