2010-10-20 23:15:20 +00:00
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// $Id$
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/*
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* WorldEdit
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* Copyright (C) 2010 sk89q <http://www.sk89q.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.sk89q.worldedit.snapshots;
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import java.io.*;
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import java.util.Arrays;
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import java.util.Collections;
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/**
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*
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* @author sk89q
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*/
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public class SnapshotRepository {
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/**
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* Stores the directory the snapshots come from.
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*/
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private File dir;
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/**
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* Create a new instance of a repository.
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*
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* @param dir
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*/
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public SnapshotRepository(File dir) {
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this.dir = dir;
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}
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/**
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* Create a new instance of a repository.
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*
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* @param dir
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*/
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public SnapshotRepository(String dir) {
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this.dir = new File(dir);
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}
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/**
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* Get a list of snapshots in a directory. The newest snapshot is
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* near the top of the array.
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*
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* @return
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*/
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public Snapshot[] getSnapshots() {
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FilenameFilter filter = new FilenameFilter() {
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public boolean accept(File dir, String name) {
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File f = new File(dir, name);
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2010-11-06 05:50:22 +00:00
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return isValidSnapshot(f);
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2010-10-20 23:15:20 +00:00
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}
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};
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String[] snapshotNames = dir.list(filter);
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if (snapshotNames == null || snapshotNames.length == 0) {
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return new Snapshot[0];
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}
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Snapshot[] snapshots = new Snapshot[snapshotNames.length];
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Arrays.sort(snapshotNames, Collections.reverseOrder());
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int i = 0;
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for (String name : snapshotNames) {
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snapshots[i] = new Snapshot(this, name);
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i++;
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}
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return snapshots;
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}
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/**
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* Get the default snapshot.
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*
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* @return
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*/
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public Snapshot getDefaultSnapshot() {
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Snapshot[] snapshots = getSnapshots();
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if (snapshots.length == 0) {
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return null;
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}
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return snapshots[0];
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}
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/**
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* Check to see if a snapshot is valid.
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*
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2011-02-18 23:49:50 +00:00
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* @param snapshot
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2010-10-20 23:15:20 +00:00
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* @return whether it is a valid snapshot
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*/
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public boolean isValidSnapshotName(String snapshot) {
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2010-11-06 05:50:22 +00:00
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return isValidSnapshot(new File(dir, snapshot));
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}
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/**
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* Check to see if a snapshot is valid.
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*
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* @param f
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* @return whether it is a valid snapshot
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*/
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public boolean isValidSnapshot(File f) {
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2010-11-17 06:31:04 +00:00
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if (!f.getName().matches("^[A-Za-z0-9_\\- \\./\\\\'\\$@~!%\\^\\*\\(\\)\\[\\]\\+\\{\\},\\?]+$")) {
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2010-10-20 23:15:20 +00:00
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return false;
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}
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return (f.isDirectory() && (new File(f, "level.dat")).exists())
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2010-11-06 05:50:22 +00:00
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|| (f.isFile() && (
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f.getName().toLowerCase().endsWith(".zip")
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|| f.getName().toLowerCase().endsWith(".tar.bz2")
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|| f.getName().toLowerCase().endsWith(".tar.gz")
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|| f.getName().toLowerCase().endsWith(".tar")
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));
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2010-10-20 23:15:20 +00:00
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}
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/**
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* Get a snapshot.
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*
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* @param name
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* @return
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* @throws InvalidSnapshotException
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*/
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public Snapshot getSnapshot(String name) throws InvalidSnapshotException {
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if (!isValidSnapshotName(name)) {
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throw new InvalidSnapshotException();
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}
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return new Snapshot(this, name);
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}
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/**
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* Get the snapshot directory.
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*
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* @return
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*/
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public File getDirectory() {
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return dir;
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}
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}
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