File: index_header.c

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swish++ 6.1.5-2
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/*
**      SWISH++
**      index_header.c
**
**      Copyright (C) 2001  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.
*/

/*
**      Note that this file is #include'd into index.c because it would be
**      annoying to make a function out of it.
*/

#ifdef  WRITE_HEADER
    long const num_dirs           = dir_set.size();
    long const num_files          = file_info::num_files();
    long const num_stop_words     = stop_words->size();
    long const num_meta_names     = meta_names.size();

    off_t *const word_offset      = new off_t[ num_unique_words ];
    off_t *const stop_word_offset = num_stop_words ?
                                    new off_t[ num_stop_words ] : 0;
    off_t *const dir_offset       = new off_t[ num_dirs ];
    off_t *const file_offset      = new off_t[ num_files ];
    off_t *const meta_name_offset = num_meta_names ?
                                    new off_t[ num_meta_names ] : 0;

    my_write( o, &num_unique_words, sizeof( num_unique_words ) );
    streampos const word_offset_pos = o.tellp();
    my_write( o, word_offset, num_unique_words * sizeof( word_offset[0] ) );

    my_write( o, &num_stop_words, sizeof( num_stop_words ) );
    streampos const stop_word_offset_pos = o.tellp();
    if ( num_stop_words )
        my_write( o, stop_word_offset,
            num_stop_words * sizeof( stop_word_offset[0] )
        );

    my_write( o, &num_dirs, sizeof( num_dirs ) );
    streampos const dir_offset_pos = o.tellp();
    my_write( o, dir_offset, num_dirs * sizeof( dir_offset[0] ) );

    my_write( o, &num_files, sizeof( num_files ) );
    streampos const file_offset_pos = o.tellp();
    my_write( o, file_offset, num_files * sizeof( file_offset[0] ) );

    my_write( o, &num_meta_names, sizeof( num_meta_names ) );
    streampos const meta_name_offset_pos = o.tellp();
    if ( num_meta_names )
        my_write( o, meta_name_offset,
            num_meta_names * sizeof( meta_name_offset[0] )
        );
#endif
#ifdef  REWRITE_HEADER
    o.seekp( word_offset_pos );
    my_write( o, word_offset, num_unique_words * sizeof( word_offset[0] ) );
    if ( num_stop_words ) {
        o.seekp( stop_word_offset_pos );
        my_write( o, stop_word_offset,
            num_stop_words * sizeof( stop_word_offset[0] )
        );
    }
    o.seekp( dir_offset_pos );
    my_write( o, dir_offset, num_dirs * sizeof( dir_offset[0] ) );
    o.seekp( file_offset_pos );
    my_write( o, file_offset, num_files * sizeof( file_offset[0] ) );
    if ( num_meta_names ) {
        o.seekp( meta_name_offset_pos );
        my_write( o, meta_name_offset,
            num_meta_names * sizeof( meta_name_offset[0] )
        );
    }

    delete[] word_offset;
    delete[] stop_word_offset;
    delete[] dir_offset;
    delete[] file_offset;
    delete[] meta_name_offset;
#endif
/* vim:set et sw=4 ts=4: */