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/*
* Copyright 2012-2014 MultiMC Contributors
*
* 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.multimc;
import java.io.*;
import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.*;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class Utils
{
/**
* Finds a field that looks like a Minecraft base folder in a supplied class
*
* @param mc the class to scan
*/
public static Field getMCPathField(Class<?> mc)
{
Field[] fields = mc.getDeclaredFields();
for (Field f : fields)
{
if (f.getType() != File.class)
{
// Has to be File
continue;
}
if (f.getModifiers() != (Modifier.PRIVATE + Modifier.STATIC))
{
// And Private Static.
continue;
}
return f;
}
return null;
}
/**
* Log to the MultiMC console
*
* @param message A String containing the message
* @param level A String containing the level name. See MinecraftProcess::getLevel()
*/
public static void log(String message, String level)
{
// Kinda dirty
String tag = "!![" + level + "]!";
System.out.println(tag + message.replace("\n", "\n" + tag));
}
public static void log(String message)
{
log(message, "MultiMC");
}
public static void log()
{
System.out.println();
}
/**
* Pushes bytes from in to out. Closes both streams no matter what.
* @param in the input stream
* @param out the output stream
* @throws IOException
*/
private static void copyStream(InputStream in, OutputStream out) throws IOException
{
try
{
byte[] buffer = new byte[4096];
int len;
while((len = in.read(buffer)) >= 0)
out.write(buffer, 0, len);
} finally
{
in.close();
out.close();
}
}
/**
* Replace a 'target' string 'suffix' with 'replacement'
*/
public static String replaceSuffix (String target, String suffix, String replacement)
{
if (!target.endsWith(suffix))
{
return target;
}
String prefix = target.substring(0, target.length() - suffix.length());
return prefix + replacement;
}
/**
* Unzip zip file with natives 'source' into the folder 'targetFolder'
*
* Contains a hack for OSX. Yay.
* @param source
* @param targetFolder
* @throws IOException
*/
public static void unzipNatives(File source, File targetFolder) throws IOException
{
ZipFile zip = new ZipFile(source);
boolean applyHacks = false;
String[] javaVersionElements = System.getProperty("java.version").split("\\.");
int major = Integer.parseInt(javaVersionElements[1]);
if (major >= 8)
{
applyHacks = true;
}
try
{
Enumeration entries = zip.entries();
while (entries.hasMoreElements())
{
ZipEntry entry = (ZipEntry) entries.nextElement();
String entryName = entry.getName();
String fileName = entryName;
if(applyHacks)
{
fileName = replaceSuffix(entryName, ".jnilib", ".dylib");
}
File targetFile = new File(targetFolder, fileName);
if (targetFile.getParentFile() != null)
{
targetFile.getParentFile().mkdirs();
}
if (entry.isDirectory())
continue;
copyStream(zip.getInputStream(entry), new BufferedOutputStream(new FileOutputStream(targetFile)));
}
} finally
{
zip.close();
}
}
}
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