/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2017 Sri Harsha Chilakapati
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.shc.silenceengine.backend.lwjgl;
import com.shc.silenceengine.core.SilenceEngine;
import com.shc.silenceengine.core.SilenceException;
import com.shc.silenceengine.io.FilePath;
import com.shc.silenceengine.utils.functional.Promise;
import com.shc.silenceengine.utils.functional.SimpleCallback;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLDecoder;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.stream.Collectors;
/**
* @author Sri Harsha Chilakapati
*/
class LwjglResourceFilePath extends LwjglFilePath
{
LwjglResourceFilePath(String path)
{
super(path, Type.RESOURCE);
}
private ResourceType getResourceType()
{
URL url = LwjglResourceFilePath.class.getClassLoader().getResource(getPath());
if (url != null && url.toString().contains("jar"))
return ResourceType.JAR;
return ResourceType.FILE;
}
@Override
public Promise<Boolean> exists()
{
return new Promise<>((resolve, reject) ->
resolve.invoke(LwjglResourceFilePath.class.getClassLoader().getResource(path) != null));
}
@Override
public Promise<Boolean> isDirectory()
{
return new Promise<>((resolve, reject) ->
exists().then(exists ->
{
if (!exists) resolve.invoke(false);
try
{
if (getResourceType() == ResourceType.FILE)
resolve.invoke(Files.isDirectory(Paths.get(getIDEPath())));
else
{
List<JarEntry> entries = getJarEntries();
// Size greater than 1 for directories, since they contain files
resolve.invoke(entries.size() > 1 || entries.get(0).isDirectory());
}
}
catch (IOException e)
{
SilenceEngine.log.getRootLogger().error(e);
reject.invoke(e);
}
}, reject));
}
@Override
public Promise<Void> moveTo(FilePath path)
{
return new Promise<>((resolve, reject) -> reject.invoke(new IOException("Cannot move an in-jar resource.")));
}
@Override
public Promise<Void> mkdirs()
{
return new Promise<>((resolve, reject) -> reject.invoke(new IOException("Cannot create directory inside a jar")));
}
@Override
public Promise<Void> createFile()
{
return new Promise<>((resolve, reject) -> reject.invoke(new IOException("Cannot create a file inside jar")));
}
@Override
public Promise<Boolean> delete()
{
return new Promise<>((resolve, reject) -> reject.invoke(new IOException("Cannot delete an in-jar resource")));
}
@Override
public void deleteOnExit()
{
throw new SilenceException("Cannot delete an in-jar resource upon exit.");
}
@Override
public Promise<Long> sizeInBytes()
{
return new Promise<>((resolve, reject) ->
exists().then(exists ->
{
if (!exists)
resolve.invoke(-1L);
try
{
if (getResourceType() == ResourceType.FILE)
resolve.invoke(Files.size(Paths.get(getIDEPath())));
List<JarEntry> entries = getJarEntries();
long size = 0;
for (JarEntry entry : entries)
size += entry.getSize();
resolve.invoke(size);
}
catch (IOException e)
{
SilenceEngine.log.getRootLogger().error(e);
reject.invoke(e);
}
resolve.invoke(-1L);
}, reject));
}
@Override
public Promise<List<FilePath>> listFiles()
{
return new Promise<>((resolve, reject) ->
{
boolean[] values = new boolean[2];
SimpleCallback function = () ->
{
if (!values[0])
throw new SilenceException("Cannot list files in a path which is not a directory.");
if (!values[1])
throw new SilenceException("Cannot list files in a non existing directory.");
List<FilePath> filePaths = new ArrayList<>();
try
{
if (getResourceType() == ResourceType.FILE)
{
File file = null;
file = new File(getIDEPath());
File[] children = file.listFiles();
if (children != null)
{
for (File child : children)
filePaths.add(new LwjglResourceFilePath(path + SEPARATOR + child.getPath().replace(file.getPath(), "")));
}
}
else
{
List<JarEntry> entries = null;
entries = getJarEntries();
entries.forEach(e -> filePaths.add(FilePath.getResourceFile(e.getName())));
}
}
catch (IOException e)
{
e.printStackTrace();
reject.invoke(e);
}
resolve.invoke(Collections.unmodifiableList(filePaths));
};
isDirectory().then(value0 ->
{
values[0] = value0;
exists().then(value1 ->
{
values[1] = value1;
function.invoke();
}, reject);
}, reject);
});
}
@Override
public InputStream getInputStream() throws IOException
{
return LwjglResourceFilePath.class.getClassLoader().getResourceAsStream(getPath());
}
@Override
public OutputStream getOutputStream(boolean append) throws IOException
{
throw new IOException("Cannot open an OutputStream for in-jar resources.");
}
private String getIDEPath() throws IOException
{
URL url = LwjglResourceFilePath.class.getClassLoader().getResource(getPath());
if (url == null)
throw new IOException("Error, path not found.");
String urlString = url.toString();
SilenceEngine.Platform platform = SilenceEngine.display.getPlatform();
if (platform == SilenceEngine.Platform.WINDOWS_32 || platform == SilenceEngine.Platform.WINDOWS_64)
return URLDecoder.decode(urlString.substring(urlString.indexOf('/') + 1), "UTF-8");
else
return "/" + URLDecoder.decode(urlString.substring(urlString.indexOf('/') + 1), "UTF-8");
}
private List<JarEntry> getJarEntries() throws IOException
{
// Get the JAR file of the resource
URL url = LwjglResourceFilePath.class.getClassLoader().getResource(getPath());
if (url == null)
throw new SilenceException("Error, resource doesn't exist.");
String jarUrl = url.toString();
String jarPath = URLDecoder.decode(jarUrl.substring(jarUrl.indexOf('/'), jarUrl.indexOf('!')), "UTF-8");
// Now get the JarEntry for this path
JarFile jarFile = new JarFile(new File(jarPath));
List<JarEntry> entries = jarFile.stream().filter(e -> e.getName().startsWith(path))
.collect(Collectors.toList());
jarFile.close();
if (entries != null)
return entries;
throw new IOException("Cannot find the JAR entry for " + getPath() + " in JAR file " + jarPath);
}
/**
* The ResourceType specifies whether the resource file is inside a JAR or on the disk (run from IDE).
*/
private enum ResourceType
{
JAR, // Resource contained within a JAR file in classpath
FILE // Resource is a file on the disk (must be run from the IDE)
}
}