/*
* Copyright 2013 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.asset.sources;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.terasology.asset.AssetUri;
import org.terasology.naming.Name;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.Enumeration;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
* @author Immortius
*/
public class ArchiveSource extends AbstractSource {
private final Logger logger = LoggerFactory.getLogger(ArchiveSource.class);
public ArchiveSource(Name sourceId, File archive, String assetsPath, String overridesPath, String deltasPath) {
super(sourceId);
try {
scanArchiveForAssets(archive, assetsPath);
scanArchiveForOverrides(archive, overridesPath);
scanArchiveForDeltas(archive, deltasPath);
} catch (IOException e) {
throw new IllegalStateException("Error loading assets: " + e.getMessage(), e);
}
}
private void scanArchiveForOverrides(File file, String overridesPath) throws IOException {
ZipFile archive;
if (file.getName().endsWith(".jar")) {
archive = new JarFile(file, false);
} else {
archive = new ZipFile(file);
}
try {
Enumeration<? extends ZipEntry> lister = archive.entries();
while (lister.hasMoreElements()) {
ZipEntry entry = lister.nextElement();
String entryPath = entry.getName();
logger.debug("Found {}", entryPath);
if (entryPath.startsWith(overridesPath)) {
String key = entryPath.substring(overridesPath.length() + 1);
int moduleIndex = key.indexOf('/');
if (moduleIndex == -1) {
continue;
}
Name moduleName = new Name(key.substring(0, moduleIndex));
key = key.substring(moduleIndex + 1);
AssetUri uri = getUri(moduleName, key);
if (uri == null || !uri.isValid()) {
continue;
}
logger.debug("Discovered override {} at {}", uri, entryPath);
// Using a jar protocol for zip files, because cannot register new protocols for the applet
URL url = new URL("jar:file:" + file.getAbsolutePath() + "!/" + entryPath);
addOverride(uri, url);
}
}
} finally {
archive.close();
}
}
private void scanArchiveForDeltas(File file, String deltaPath) throws IOException {
ZipFile archive;
if (file.getName().endsWith(".jar")) {
archive = new JarFile(file, false);
} else {
archive = new ZipFile(file);
}
try {
Enumeration<? extends ZipEntry> lister = archive.entries();
while (lister.hasMoreElements()) {
ZipEntry entry = lister.nextElement();
String entryPath = entry.getName();
logger.debug("Found {}", entryPath);
if (entryPath.startsWith(deltaPath)) {
String key = entryPath.substring(deltaPath.length() + 1);
int moduleIndex = key.indexOf('/');
if (moduleIndex == -1) {
continue;
}
Name moduleName = new Name(key.substring(0, moduleIndex));
key = key.substring(moduleIndex + 1);
AssetUri uri = getUri(moduleName, key);
if (uri == null || !uri.isValid()) {
continue;
}
logger.debug("Discovered delta {} at {}", uri, entryPath);
// Using a jar protocol for zip files, because cannot register new protocols for the applet
URL url = new URL("jar:file:" + file.getAbsolutePath() + "!/" + entryPath);
setDelta(uri, url);
}
}
} finally {
archive.close();
}
}
protected void scanArchiveForAssets(File file, String assetsPath) throws IOException {
ZipFile archive;
if (file.getName().endsWith(".jar")) {
archive = new JarFile(file, false);
} else {
archive = new ZipFile(file);
}
try {
Enumeration<? extends ZipEntry> lister = archive.entries();
while (lister.hasMoreElements()) {
ZipEntry entry = lister.nextElement();
String entryPath = entry.getName();
logger.debug("Found {}", entryPath);
if (entryPath.startsWith(assetsPath)) {
String key = entryPath.substring(assetsPath.length() + 1);
AssetUri uri = getUri(key);
if (uri == null || !uri.isValid()) {
continue;
}
logger.debug("Discovered resource {}", uri);
// Using a jar protocol for zip files, because cannot register new protocols for the applet
URL url = new URL("jar:file:" + file.getAbsolutePath() + "!/" + entryPath);
addItem(uri, url);
}
}
} finally {
archive.close();
}
}
}