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support for pack200 and lzma jars

This commit is contained in:
Brian Matzon 2008-04-18 22:34:11 +00:00
parent 5d1651b425
commit 61b2170c9f
1 changed files with 155 additions and 7 deletions
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162
src/java/org/lwjgl/util/applet/AppletLoader.java
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@ -47,6 +47,7 @@ import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
@ -59,6 +60,8 @@ import java.util.Enumeration;
import java.util.StringTokenizer;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.jar.Pack200;
/**
* <p>
@ -99,6 +102,7 @@ import java.util.jar.JarFile;
* $Id$
*/
public class AppletLoader extends Applet implements Runnable, AppletStub {
/** initializing */
public static final int STATE_INIT = 1;
@ -192,6 +196,12 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
/** state of applet loader */
protected int state = STATE_INIT;
/** whether lzma is supported */
protected boolean lzmaSupported = false;
/** whether pack200 is supported */
protected boolean pack200Supported = false;
/** generic error message to display on error */
protected String[] genericErrorMessage = { "An error occured while loading the applet.",
"Plese contact support to resolve this issue.",
@ -209,7 +219,6 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
* @see java.applet.Applet#init()
*/
public void init() {
state = STATE_INIT;
// sanity check
@ -242,6 +251,22 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
if(logo == null || progressbar == null) {
fatalErrorOccured("Unable to load logo and progressbar images");
}
// check for lzma support
try {
Class.forName("LZMA.LzmaInputStream");
lzmaSupported = true;
} catch (Throwable e) {
/* no lzma support */
}
// check pack200 support
try {
java.util.jar.Pack200.class.getSimpleName();
pack200Supported = true;
} catch (Throwable e) {
/* no pack200 support */
}
}
/*
@ -419,6 +444,22 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
return "unknown state";
}
}
/**
* Trims the passed file string based on the available capabilities
* @param file string of files to be trimmed
* @return trimmed string based on capabilities of client
*/
protected String trimExtensionByCapabilities(String file) {
if (!pack200Supported) {
file = file.replaceAll(".pack", "");
}
if (!lzmaSupported) {
file = file.replaceAll(".lzma", "");
}
return file;
}
/**
* Reads list of jars to download and adds the urls to urlList
@ -431,6 +472,8 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
// jars to load
String jarList = getParameter("al_jars");
jarList = trimExtensionByCapabilities(jarList);
StringTokenizer jar = new StringTokenizer(jarList, ", ");
int jarCount = jar.countTokens() + 1;
@ -461,6 +504,7 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
if (nativeJar == null) {
fatalErrorOccured("no lwjgl natives files found");
} else {
nativeJar = trimExtensionByCapabilities(nativeJar);
urlList[jarCount - 1] = new URL(path, nativeJar);
}
}
@ -476,7 +520,6 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
*
*/
public void run() {
state = STATE_CHECKING_CACHE;
percentage = 5;
@ -542,7 +585,10 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
// if jars not available or need updating download them
if (!cacheAvailable) {
// downloads jars from the server
downloadJars(path); // 10-65%
downloadJars(path); // 10-55%
// Extract Pack and LZMA files
extractJars(path); // 55-65%
// Extracts Native Files
extractNatives(path); // 65-85%
@ -699,7 +745,7 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
if(debugMode) {
sleep(2000);
}
urlconnection = urlList[i].openConnection();
String currentFile = getFileName(urlList[i]);
@ -714,7 +760,7 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
}
fos.write(buffer, 0, bufferSize);
currentSizeDownload += bufferSize;
percentage = initialPercentage + ((currentSizeDownload * 55) / totalSizeDownload);
percentage = initialPercentage + ((currentSizeDownload * 45) / totalSizeDownload);
subtaskMessage = "Retrieving: " + currentFile + " " + ((currentSizeDownload * 100) / totalSizeDownload) + "%";
}
@ -729,7 +775,7 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
* @param urlconnection connection to get input stream from
* @return InputStream or null if not possible
*/
private InputStream getJarInputStream(final String currentFile, final URLConnection urlconnection) throws Exception {
protected InputStream getJarInputStream(final String currentFile, final URLConnection urlconnection) throws Exception {
final InputStream[] is = new InputStream[1];
// try to get the input stream 3 times.
@ -773,6 +819,108 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
return is[0];
}
/**
* Extract LZMA File
* @param in Input path to pack file
* @param out output path to resulting file
* @throws exception if any errors occur
*/
protected void extractLZMA(String in, String out) throws Exception {
File f = new File(in);
FileInputStream fileInputHandle = new FileInputStream(f);
// use reflection to avoid hard dependency
Class clazz = Class.forName( "LZMA.LzmaInputStream" );
Constructor constructor = clazz.getDeclaredConstructor( new Class[] {InputStream.class} );
InputStream inputHandle = (InputStream) constructor.newInstance( new Object[] {fileInputHandle} );
OutputStream outputHandle;
outputHandle = new FileOutputStream(out);
byte [] buffer = new byte [1<<14];
int ret = inputHandle.read(buffer);
while (ret >= 1) {
outputHandle.write(buffer,0,ret);
ret = inputHandle.read(buffer);
}
inputHandle.close();
outputHandle.close();
outputHandle = null;
inputHandle = null;
// delete LZMA file, as it is no longer needed
f.delete();
if(debugMode) {
sleep(1000);
}
}
/**
* Extract Pack File
* @param in Input path to pack file
* @param out output path to resulting file
* @throws exception if any errors occur
*/
protected void extractPack(String in, String out) throws Exception {
File f = new File(in);
FileOutputStream fostream = new FileOutputStream(out);
JarOutputStream jostream = new JarOutputStream(fostream);
Pack200.Unpacker unpacker = Pack200.newUnpacker();
unpacker.unpack(f, jostream);
jostream.close();
// delete pack file as its no longer needed
f.delete();
if(debugMode) {
sleep(1000);
}
}
/**
* Extract all jars from any lzma/pack files
*
* @param path output path
* @throws exception if any errors occur
*/
protected void extractJars(String path) throws Exception {
state = STATE_EXTRACTING_PACKAGES;
float increment = (float) 10.0 / urlList.length;
// extract all lzma and pack.lzma files
for (int i = 0; i < urlList.length; i++) {
percentage += (int) (increment * (i+1));
String filename = getFileName(urlList[i]);
if(debugMode) {
sleep(1000);
}
if (filename.endsWith(".pack.lzma")) {
extractLZMA(path + filename, path + filename.replaceAll(".lzma", ""));
extractPack(path + filename.replaceAll(".lzma", ""), path + filename.replaceAll(".pack.lzma", ""));
// update list to contain .jar file
urlList[i] = new URL("file://" + path + filename.replaceAll(".pack.lzma", ""));
}
else if (filename.endsWith(".pack")) {
extractPack(path + filename, path + filename.replace(".pack", ""));
// update list to contain .jar file
urlList[i] = new URL("file://" + path + filename.replaceAll(".pack", ""));
}
else if (filename.endsWith(".lzma")) {
extractLZMA(path + filename, path + filename.replace(".lzma", ""));
// update list to contain .jar file
urlList[i] = new URL("file://" + path + filename.replaceAll(".lzma", ""));
}
}
}
/**
* This method will extract all file from the native jar and extract them
@ -783,7 +931,7 @@ public class AppletLoader extends Applet implements Runnable, AppletStub {
* @throws Exception if it fails to extract files
*/
protected void extractNatives(String path) throws Exception {
state = STATE_EXTRACTING_PACKAGES;
int initialPercentage = percentage;