//
//      aegis - project change supervisor
//      Copyright (C) 1999, 2002-2006, 2008, 2011, 2012 Peter Miller
//
//      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/>.
//

#include <libaegis/os/isa/path_prefix.h>
#include <libaegis/project/file.h>


string_ty *
project_file_directory_conflict(project *pp, string_ty *file_name)
{
    size_t          j;
    fstate_src_ty   *src_data;

    for (j = 0; ; ++j)
    {
        //
        // Don't include deleted files in the check, so that directories
        // of removed files can re-used as file names.  This can
        // sometimes cause errors (unix will barf) when the user tries
        // to reconstruct later and they want mixed deltas in their
        // development directory.
        //
        // There used to be a larger problem where the history tool
        // could have a filename collision.  With the advent of the
        // UUIDs, this is a vanishing concern.
        //
        // include built files in the check
        //
        src_data = pp->file_nth(j, view_path_extreme);
        if (!src_data)
            break;
        if
        (
            os_isa_path_prefix(file_name, src_data->file_name)
        ||
            os_isa_path_prefix(src_data->file_name, file_name)
        )
            return src_data->file_name;
    }
    return 0;
}


// vim: set ts=8 sw=4 et :