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better jar handling; get native files from manifest instead of iterator over every file in the jar

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yugecin
2017-05-25 01:03:15 +02:00
parent ec53f531c8
commit 6ccedf4636
9 changed files with 197 additions and 108 deletions
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26
src/itdelatrisu/opsu/Utils.java
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@@ -21,14 +21,7 @@ package itdelatrisu.opsu;
import com.sun.istack.internal.Nullable;
import itdelatrisu.opsu.downloads.Download;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.SocketTimeoutException;
import java.net.URL;
@@ -37,6 +30,7 @@ import java.security.NoSuchAlgorithmException;
import java.security.cert.X509Certificate;
import java.util.Arrays;
import java.util.Scanner;
import java.util.jar.JarFile;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
@@ -53,6 +47,7 @@ import org.newdawn.slick.util.Log;
import com.sun.jna.platform.FileUtils;
import yugecin.opsudance.core.DisplayContainer;
import yugecin.opsudance.core.NotNull;
import yugecin.opsudance.core.errorhandling.ErrorHandler;
import static yugecin.opsudance.core.InstanceContainer.*;
@@ -537,4 +532,19 @@ public class Utils {
key != Keyboard.KEY_F7 && key != Keyboard.KEY_F10 && key != Keyboard.KEY_F12);
}
public static void unpackFromJar(@NotNull JarFile jarfile, @NotNull File unpackedFile,
@NotNull String filename) throws IOException {
InputStream in = jarfile.getInputStream(jarfile.getEntry(filename));
OutputStream out = new FileOutputStream(unpackedFile);
byte[] buffer = new byte[65536];
int bufferSize;
while ((bufferSize = in.read(buffer, 0, buffer.length)) != -1) {
out.write(buffer, 0, bufferSize);
}
in.close();
out.close();
}
}