LoadableFile.java
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package com.mumfrey.liteloader.interfaces;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import com.google.common.io.Files;
import com.google.common.primitives.Ints;
import com.mumfrey.liteloader.core.api.LoadableModFile;
import com.mumfrey.liteloader.launch.ClassPathUtilities;
import com.mumfrey.liteloader.launch.InjectionStrategy;
import com.mumfrey.liteloader.launch.LiteLoaderTweaker;
import com.mumfrey.liteloader.launch.LoaderEnvironment;
import com.mumfrey.liteloader.util.log.LiteLoaderLogger;
import net.minecraft.launchwrapper.LaunchClassLoader;
public class LoadableFile extends File implements TweakContainer<File>
{
private static final Pattern versionPattern = Pattern.compile("([0-9]+\\.)+[0-9]+([_A-Z0-9]+)?");
private static final long serialVersionUID = 1L;
/**
* True once this file has been injected into the class path
*/
protected boolean injected;
protected boolean forceInjection;
/**
* Position to inject the mod file at in the class path, if blank injects at the bottom as usual, alternatively
* the developer can specify "top" to inject at the top, "base" to inject above the game jar, or "above: name" to
* inject above a specified other library matching "name".
*/
protected InjectionStrategy injectionStrategy = null;
protected Set<String> modSystems = new HashSet<String>();
/**
* Name of the tweak class
*/
protected String tweakClassName;
/**
* Priority for this tweaker
*/
protected int tweakPriority = 1000;
/**
* Class path entries read from jar metadata
*/
protected String[] classPathEntries = null;
protected String displayName;
protected String version = "Unknown";
protected String author = "Unknown";
protected boolean hasEventTransformers;
/**
* Create a new tweak container wrapping the specified file
*/
public LoadableFile(File parent)
{
super(parent.getAbsolutePath());
this.displayName = this.getName();
this.guessVersionFromName();
this.readJarMetaData();
}
/**
* ctor for subclasses
*/
protected LoadableFile(LoadableFile file)
{
super(file.getAbsolutePath());
this.displayName = this.getName();
this.forceInjection = file.forceInjection;
this.assignJarMetaData(file);
}
/**
* ctor for subclasses
*/
protected LoadableFile(String pathname)
{
super(pathname);
this.displayName = this.getName();
this.readJarMetaData();
}
private void guessVersionFromName()
{
Matcher versionPatternMatcher = LoadableFile.versionPattern.matcher(this.getName());
while (versionPatternMatcher.find())
this.version = versionPatternMatcher.group();
}
protected void assignJarMetaData(LoadableFile file)
{
this.modSystems = file.modSystems;
this.tweakClassName = file.tweakClassName;
this.classPathEntries = file.classPathEntries;
this.tweakPriority = file.tweakPriority;
this.displayName = file.displayName;
this.version = file.version;
this.author = file.author;
this.injectionStrategy = file.injectionStrategy;
}
/**
* Search for tweaks in this file
*/
protected void readJarMetaData()
{
JarFile jar = null;
if (this.isDirectory())
{
return;
}
try
{
jar = new JarFile(this);
if (jar.getManifest() != null)
{
LiteLoaderLogger.info("Inspecting jar metadata in '%s'", this.getName());
Attributes manifestAttributes = jar.getManifest().getMainAttributes();
String modSystemList = manifestAttributes.getValue("ModType");
if (modSystemList != null)
{
for (String modSystem : modSystemList.split(","))
{
modSystem = modSystem.trim();
if (modSystem.length() > 0)
{
this.modSystems.add(modSystem);
}
}
}
this.tweakClassName = manifestAttributes.getValue("TweakClass");
if (this.tweakClassName != null)
{
String classPath = manifestAttributes.getValue("Class-Path");
if (classPath != null)
{
this.classPathEntries = classPath.split(" ");
}
}
if (manifestAttributes.getValue("TweakOrder") != null)
{
Integer tweakOrder = Ints.tryParse(manifestAttributes.getValue("TweakOrder"));
if (tweakOrder != null)
{
this.tweakPriority = tweakOrder.intValue();
}
}
if (manifestAttributes.getValue("Implementation-Title") != null)
this.displayName = manifestAttributes.getValue("Implementation-Title");
if (manifestAttributes.getValue("TweakName") != null)
this.displayName = manifestAttributes.getValue("TweakName");
if (manifestAttributes.getValue("Implementation-Version") != null)
this.version = manifestAttributes.getValue("Implementation-Version");
if (manifestAttributes.getValue("TweakVersion") != null)
this.version = manifestAttributes.getValue("TweakVersion");
if (manifestAttributes.getValue("Implementation-Vendor") != null)
this.author = manifestAttributes.getValue("Implementation-Vendor");
if (manifestAttributes.getValue("TweakAuthor") != null)
this.author = manifestAttributes.getValue("TweakAuthor");
this.injectionStrategy = InjectionStrategy.parseStrategy(manifestAttributes.getValue("TweakInjectionStrategy"), InjectionStrategy.TOP);
}
}
catch (Exception ex)
{
LiteLoaderLogger.warning("Could not parse jar metadata in '%s'", this);
}
finally
{
try
{
if (jar != null) jar.close();
}
catch (IOException ex) {}
}
}
public Set<String> getModSystems()
{
return Collections.unmodifiableSet(this.modSystems);
}
@Override
public File getTarget()
{
return this;
}
@Override
public File toFile()
{
return this;
}
@Override
public String getLocation()
{
return this.getAbsolutePath();
}
@Override
public URL getURL() throws MalformedURLException
{
return this.toURI().toURL();
}
@Override
public String getIdentifier()
{
return this.getName().toLowerCase();
}
/* (non-Javadoc)
* @see com.mumfrey.liteloader.core.ITweakContainer#hasTweakClass()
*/
@Override
public boolean hasTweakClass()
{
return this.tweakClassName != null;
}
/* (non-Javadoc)
* @see com.mumfrey.liteloader.core.ITweakContainer#getTweakClassName()
*/
@Override
public String getTweakClassName()
{
return this.tweakClassName;
}
/* (non-Javadoc)
* @see com.mumfrey.liteloader.core.TweakContainer#getTweakPriority()
*/
@Override
public int getTweakPriority()
{
return this.tweakPriority;
}
/* (non-Javadoc)
* @see com.mumfrey.liteloader.core.ITweakContainer#getClassPathEntries()
*/
@Override
public String[] getClassPathEntries()
{
return this.classPathEntries;
}
/* (non-Javadoc)
* @see com.mumfrey.liteloader.core.ITweakContainer#hasClassTransformers()
*/
@Override
public boolean hasClassTransformers()
{
return false;
}
/* (non-Javadoc)
* @see com.mumfrey.liteloader.core.ITweakContainer#getClassTransformerClassNames()
*/
@Override
public List<String> getClassTransformerClassNames()
{
return new ArrayList<String>();
}
@Override
public boolean hasEventTransformers()
{
return this.hasEventTransformers;
}
public void onEventsInjected()
{
this.hasEventTransformers = true;
}
public boolean isInjectionForced()
{
return this.forceInjection;
}
public void setForceInjection(boolean forceInjection)
{
this.forceInjection = forceInjection;
}
@Override
public boolean isInjected()
{
return this.injected;
}
@Override
public boolean injectIntoClassPath(LaunchClassLoader classLoader, boolean injectIntoParent) throws MalformedURLException
{
if (!this.injected)
{
this.injected = true;
boolean isOnClassPath = ClassPathUtilities.isJarOnClassPath(this, classLoader);
if (!this.forceInjection && isOnClassPath)
{
LiteLoaderLogger.info("%s already exists on the classpath, skipping injection", this);
return false;
}
ClassPathUtilities.injectIntoClassPath(classLoader, this.getURL(), this.getInjectionStrategy());
if (injectIntoParent)
{
LiteLoaderTweaker.addURLToParentClassLoader(this.getURL());
}
return true;
}
return false;
}
@Override
public InjectionStrategy getInjectionStrategy()
{
return this.injectionStrategy;
}
@Override
public String getDisplayName()
{
return this.displayName != null ? this.displayName : this.getName();
}
@Override
public String getVersion()
{
return this.version;
}
@Override
public String getAuthor()
{
return this.author;
}
@Override
public String getDescription(String key)
{
return "";
}
@Override
public boolean isExternalJar()
{
return true;
}
@Override
public boolean isToggleable()
{
return false;
}
@Override
public boolean isEnabled(LoaderEnvironment environment)
{
return environment.getEnabledModsList().isEnabled(environment.getProfile(), this.getIdentifier());
}
@Override
public String toString()
{
return this.getLocation();
}
/**
* @param name
* @param charset
*/
public String getFileContents(String name, Charset charset)
{
return LoadableFile.getFileContents(this, name, charset);
}
/**
* @param parent
* @param name
* @param charset
*/
public static String getFileContents(File parent, String name, Charset charset)
{
try
{
if (parent.isDirectory())
{
File file = new File(parent, name);
if (file.isFile())
{
return Files.toString(file, charset);
}
}
else
{
String content = null;
ZipFile zipFile = new ZipFile(parent);
ZipEntry zipEntry = zipFile.getEntry(name);
if (zipEntry != null)
{
try
{
content = LoadableModFile.zipEntryToString(zipFile, zipEntry);
}
catch (IOException ex) {}
}
zipFile.close();
return content;
}
}
catch (IOException ex)
{
ex.printStackTrace();
}
return null;
}
}