/*

 * Copyright (C) 2014-2018 Mikael Berthe <mikael@lilotux.net>

 *

 * 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

 */

package main

// Implement a sort interface for the list of duplicate groups

type byGroupFileSize foListList

func (a byGroupFileSize) Len() int      { return len(a) }

func (a byGroupFileSize) Swap(i, j int) { a[i], a[j] = a[j], a[i] }

func (a byGroupFileSize) Less(i, j int) bool {

	// Since this is supposed to be used for duplicate lists,

	// we use the size of the first file of the group.

	if a[i][0].Size() == a[j][0].Size() {

		return a[i][0].FilePath < a[j][0].FilePath

	}

	return a[i][0].Size() < a[j][0].Size()

}

// Implement a sort interface for a slice of files

type byFilePathName FileObjList

func (a byFilePathName) Len() int      { return len(a) }

func (a byFilePathName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }

func (a byFilePathName) Less(i, j int) bool {

	return a[i].FilePath < a[j].FilePath

}