Example usage for java.util.jar JarInputStream read

List of usage examples for java.util.jar JarInputStream read

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Introduction

In this page you can find the example usage for java.util.jar JarInputStream read.

Prototype

public int read(byte[] b, int off, int len) throws IOException

Source Link

Document

Reads from the current JAR file entry into an array of bytes.

Usage

From source file:net.ftb.util.FileUtils.java

/**
 * deletes the META-INF/*from  ww  w .  j  a v a  2  s .  c  o  m*/
 */
public static void killMetaInf() {
    File inputFile = new File(Settings.getSettings().getInstallPath() + "/" + ModPack.getSelectedPack().getDir()
            + "/minecraft/bin", "minecraft.jar");
    File outputTmpFile = new File(Settings.getSettings().getInstallPath() + "/"
            + ModPack.getSelectedPack().getDir() + "/minecraft/bin", "minecraft.jar.tmp");
    try {
        JarInputStream input = new JarInputStream(new FileInputStream(inputFile));
        JarOutputStream output = new JarOutputStream(new FileOutputStream(outputTmpFile));
        JarEntry entry;

        while ((entry = input.getNextJarEntry()) != null) {
            if (entry.getName().contains("META-INF")) {
                continue;
            }
            output.putNextEntry(entry);
            byte buffer[] = new byte[1024];
            int amo;
            while ((amo = input.read(buffer, 0, 1024)) != -1) {
                output.write(buffer, 0, amo);
            }
            output.closeEntry();
        }

        input.close();
        output.close();

        if (!inputFile.delete()) {
            Logger.logError("Failed to delete Minecraft.jar.");
            return;
        }
        outputTmpFile.renameTo(inputFile);
    } catch (FileNotFoundException e) {
        Logger.logError("Error while killing META-INF", e);
    } catch (IOException e) {
        Logger.logError("Error while killing META-INF", e);
    }
}

From source file:JarUtils.java

public static void unjar(InputStream in, File dest) throws IOException {
    if (!dest.exists()) {
        dest.mkdirs();/* w  w  w .ja va2  s.c o  m*/
    }
    if (!dest.isDirectory()) {
        throw new IOException("Destination must be a directory.");
    }
    JarInputStream jin = new JarInputStream(in);
    byte[] buffer = new byte[1024];

    ZipEntry entry = jin.getNextEntry();
    while (entry != null) {
        String fileName = entry.getName();
        if (fileName.charAt(fileName.length() - 1) == '/') {
            fileName = fileName.substring(0, fileName.length() - 1);
        }
        if (fileName.charAt(0) == '/') {
            fileName = fileName.substring(1);
        }
        if (File.separatorChar != '/') {
            fileName = fileName.replace('/', File.separatorChar);
        }
        File file = new File(dest, fileName);
        if (entry.isDirectory()) {
            // make sure the directory exists
            file.mkdirs();
            jin.closeEntry();
        } else {
            // make sure the directory exists
            File parent = file.getParentFile();
            if (parent != null && !parent.exists()) {
                parent.mkdirs();
            }

            // dump the file
            OutputStream out = new FileOutputStream(file);
            int len = 0;
            while ((len = jin.read(buffer, 0, buffer.length)) != -1) {
                out.write(buffer, 0, len);
            }
            out.flush();
            out.close();
            jin.closeEntry();
            file.setLastModified(entry.getTime());
        }
        entry = jin.getNextEntry();
    }
    /* Explicity write out the META-INF/MANIFEST.MF so that any headers such
    as the Class-Path are see for the unpackaged jar
    */
    Manifest mf = jin.getManifest();
    if (mf != null) {
        File file = new File(dest, "META-INF/MANIFEST.MF");
        File parent = file.getParentFile();
        if (parent.exists() == false) {
            parent.mkdirs();
        }
        OutputStream out = new FileOutputStream(file);
        mf.write(out);
        out.flush();
        out.close();
    }
    jin.close();
}

From source file:org.ngrinder.common.util.CompressionUtil.java

/**
 * Unpack the given jar file.//from  ww w  . j av  a  2 s. c om
 * 
 * @param jarFile
 *            file to be uncompressed
 * @param destDir
 *            destination directory
 * @throws IOException
 *             occurs when IO has a problem.
 */
public static void unjar(File jarFile, String destDir) throws IOException {
    File dest = new File(destDir);
    if (!dest.exists()) {
        dest.mkdirs();
    }
    if (!dest.isDirectory()) {
        LOGGER.error("Destination must be a directory.");
        throw new IOException("Destination must be a directory.");
    }
    JarInputStream jin = new JarInputStream(new FileInputStream(jarFile));
    byte[] buffer = new byte[1024];

    ZipEntry entry = jin.getNextEntry();
    while (entry != null) {
        String fileName = entry.getName();
        if (fileName.charAt(fileName.length() - 1) == '/') {
            fileName = fileName.substring(0, fileName.length() - 1);
        }
        if (fileName.charAt(0) == '/') {
            fileName = fileName.substring(1);
        }
        if (File.separatorChar != '/') {
            fileName = fileName.replace('/', File.separatorChar);
        }
        File file = new File(dest, fileName);
        if (entry.isDirectory()) {
            // make sure the directory exists
            file.mkdirs();
            jin.closeEntry();
        } else {
            // make sure the directory exists
            File parent = file.getParentFile();
            if (parent != null && !parent.exists()) {
                parent.mkdirs();
            }

            // dump the file
            OutputStream out = new FileOutputStream(file);
            int len = 0;
            while ((len = jin.read(buffer, 0, buffer.length)) != -1) {
                out.write(buffer, 0, len);
            }
            out.flush();
            IOUtils.closeQuietly(out);
            jin.closeEntry();
            file.setLastModified(entry.getTime());
        }
        entry = jin.getNextEntry();
    }
    Manifest mf = jin.getManifest();
    if (mf != null) {
        File file = new File(dest, "META-INF/MANIFEST.MF");
        File parent = file.getParentFile();
        if (!parent.exists()) {
            parent.mkdirs();
        }
        OutputStream out = new FileOutputStream(file);
        mf.write(out);
        out.flush();
        IOUtils.closeQuietly(out);
    }
    IOUtils.closeQuietly(jin);
}

From source file:JarHelper.java

/**
 * Given an InputStream on a jar file, unjars the contents into the given
 * directory./* www .  ja v a  2 s .com*/
 */
public void unjar(InputStream in, File destDir) throws IOException {
    BufferedOutputStream dest = null;
    JarInputStream jis = new JarInputStream(in);
    JarEntry entry;
    while ((entry = jis.getNextJarEntry()) != null) {
        if (entry.isDirectory()) {
            File dir = new File(destDir, entry.getName());
            dir.mkdir();
            if (entry.getTime() != -1)
                dir.setLastModified(entry.getTime());
            continue;
        }
        int count;
        byte data[] = new byte[BUFFER_SIZE];
        File destFile = new File(destDir, entry.getName());
        if (mVerbose)
            System.out.println("unjarring " + destFile + " from " + entry.getName());
        FileOutputStream fos = new FileOutputStream(destFile);
        dest = new BufferedOutputStream(fos, BUFFER_SIZE);
        while ((count = jis.read(data, 0, BUFFER_SIZE)) != -1) {
            dest.write(data, 0, count);
        }
        dest.flush();
        dest.close();
        if (entry.getTime() != -1)
            destFile.setLastModified(entry.getTime());
    }
    jis.close();
}

From source file:gov.nih.nci.restgen.util.JarHelper.java

/**
 * Given an InputStream on a jar file, unjars the contents into the given
 * directory./*from   www . ja  va  2 s. c om*/
 */
public void unjar(InputStream in, File destDir) throws IOException {
    BufferedOutputStream dest = null;
    JarInputStream jis = new JarInputStream(in);
    JarEntry entry;
    while ((entry = jis.getNextJarEntry()) != null) {
        if (entry.isDirectory()) {
            File dir = new File(destDir, entry.getName());
            dir.mkdir();
            if (entry.getTime() != -1)
                dir.setLastModified(entry.getTime());
            continue;
        }
        int count;
        byte data[] = new byte[BUFFER_SIZE];
        File destFile = new File(destDir, entry.getName());
        if (mVerbose) {
            //System.out.println("unjarring " + destFile + " from " + entry.getName());
        }
        FileOutputStream fos = new FileOutputStream(destFile);
        dest = new BufferedOutputStream(fos, BUFFER_SIZE);
        while ((count = jis.read(data, 0, BUFFER_SIZE)) != -1) {
            dest.write(data, 0, count);
        }
        dest.flush();
        dest.close();
        if (entry.getTime() != -1)
            destFile.setLastModified(entry.getTime());
    }
    jis.close();
}

From source file:org.nuclos.server.customcode.codegenerator.NuclosJavaCompilerComponent.java

private synchronized void jar(Map<String, byte[]> javacresult, List<CodeGenerator> generators) {
    try {/*from  w ww.  j a v  a  2 s .  c o  m*/
        final boolean oldExists = moveJarToOld();
        if (javacresult.size() > 0) {
            final Set<String> entries = new HashSet<String>();
            final JarOutputStream jos = new JarOutputStream(
                    new BufferedOutputStream(new FileOutputStream(JARFILE)), getManifest());

            try {
                for (final String key : javacresult.keySet()) {
                    entries.add(key);
                    byte[] bytecode = javacresult.get(key);

                    // create entry for directory (required for classpath scanning)
                    if (key.contains("/")) {
                        String dir = key.substring(0, key.lastIndexOf('/') + 1);
                        if (!entries.contains(dir)) {
                            entries.add(dir);
                            jos.putNextEntry(new JarEntry(dir));
                            jos.closeEntry();
                        }
                    }

                    // call postCompile() (weaving) on compiled sources
                    for (CodeGenerator generator : generators) {
                        if (!oldExists || generator.isRecompileNecessary()) {
                            for (JavaSourceAsString src : generator.getSourceFiles()) {
                                final String name = src.getFQName();
                                if (key.startsWith(name.replaceAll("\\.", "/"))) {
                                    LOG.debug("postCompile (weaving) " + key);
                                    bytecode = generator.postCompile(key, bytecode);
                                    // Can we break here???
                                    // break outer;
                                }
                            }
                        }
                    }
                    jos.putNextEntry(new ZipEntry(key));
                    LOG.debug("writing to " + key + " to jar " + JARFILE);
                    jos.write(bytecode);
                    jos.closeEntry();
                }

                if (oldExists) {
                    final JarInputStream in = new JarInputStream(
                            new BufferedInputStream(new FileInputStream(JARFILE_OLD)));
                    final byte[] buffer = new byte[2048];
                    try {
                        int size;
                        JarEntry entry;
                        while ((entry = in.getNextJarEntry()) != null) {
                            if (!entries.contains(entry.getName())) {
                                jos.putNextEntry(entry);
                                LOG.debug("copying " + entry.getName() + " from old jar " + JARFILE_OLD);
                                while ((size = in.read(buffer, 0, buffer.length)) != -1) {
                                    jos.write(buffer, 0, size);
                                }
                                jos.closeEntry();
                            }
                            in.closeEntry();
                        }
                    } finally {
                        in.close();
                    }
                }
            } finally {
                jos.close();
            }
        }
    } catch (IOException ex) {
        throw new NuclosFatalException(ex);
    }
}

From source file:org.openspaces.maven.plugin.CreatePUProjectMojo.java

/**
 * Extracts the project files to the project directory.
 *//*from  ww  w .  j a  v  a2 s  .c o  m*/
private void extract(URL url) throws Exception {
    packageDirs = packageName.replaceAll("\\.", "/");
    String puTemplate = DIR_TEMPLATES + "/" + template + "/";
    int length = puTemplate.length() - 1;
    BufferedInputStream bis = new BufferedInputStream(url.openStream());
    JarInputStream jis = new JarInputStream(bis);
    JarEntry je;
    byte[] buf = new byte[1024];
    int n;
    while ((je = jis.getNextJarEntry()) != null) {
        String jarEntryName = je.getName();
        PluginLog.getLog().debug("JAR entry: " + jarEntryName);
        if (je.isDirectory() || !jarEntryName.startsWith(puTemplate)) {
            continue;
        }
        String targetFileName = projectDir + jarEntryName.substring(length);

        // convert the ${gsGroupPath} to directory
        targetFileName = StringUtils.replace(targetFileName, FILTER_GROUP_PATH, packageDirs);
        PluginLog.getLog().debug("Extracting entry " + jarEntryName + " to " + targetFileName);

        // read the bytes to the buffer
        ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
        while ((n = jis.read(buf, 0, 1024)) > -1) {
            byteStream.write(buf, 0, n);
        }

        // replace property references with the syntax ${property_name}
        // to their respective property values.
        String data = byteStream.toString();
        data = StringUtils.replace(data, FILTER_GROUP_ID, packageName);
        data = StringUtils.replace(data, FILTER_ARTIFACT_ID, projectDir.getName());
        data = StringUtils.replace(data, FILTER_GROUP_PATH, packageDirs);

        // write the entire converted file content to the destination file.
        File f = new File(targetFileName);
        File dir = f.getParentFile();
        if (!dir.exists()) {
            dir.mkdirs();
        }
        FileWriter writer = new FileWriter(f);
        writer.write(data);
        jis.closeEntry();
        writer.close();
    }
    jis.close();
}

From source file:com.paniclauncher.workers.InstanceInstaller.java

public void deleteMetaInf() {
    File inputFile = getMinecraftJar();
    File outputTmpFile = new File(App.settings.getTempDir(), pack.getSafeName() + "-minecraft.jar");
    try {//from  w w w.j  a  v a  2  s  .co m
        JarInputStream input = new JarInputStream(new FileInputStream(inputFile));
        JarOutputStream output = new JarOutputStream(new FileOutputStream(outputTmpFile));
        JarEntry entry;

        while ((entry = input.getNextJarEntry()) != null) {
            if (entry.getName().contains("META-INF")) {
                continue;
            }
            output.putNextEntry(entry);
            byte buffer[] = new byte[1024];
            int amo;
            while ((amo = input.read(buffer, 0, 1024)) != -1) {
                output.write(buffer, 0, amo);
            }
            output.closeEntry();
        }

        input.close();
        output.close();

        inputFile.delete();
        outputTmpFile.renameTo(inputFile);
    } catch (IOException e) {
        App.settings.getConsole().logStackTrace(e);
    }
}

From source file:com.flexive.shared.FxSharedUtils.java

/**
 * Reads the content of a given entry in a Jar file (JarInputStream) and returns it as a String
 *
 * @param jarStream the given JarInputStream
 * @param entry     the given entry in the jar file
 * @return the entry's content as a String
 * @throws java.io.IOException on errors
 *//*  ww w  .j  a  v  a2 s  .  com*/
public static String readFromJarEntry(JarInputStream jarStream, JarEntry entry) throws IOException {
    final String fileContent;
    if (entry.getSize() >= 0) {
        // allocate buffer for the entire (uncompressed) script code
        final byte[] buffer = new byte[(int) entry.getSize()];
        // decompress JAR entry
        int offset = 0;
        int readBytes;
        while ((readBytes = jarStream.read(buffer, offset, (int) entry.getSize() - offset)) > 0) {
            offset += readBytes;
        }
        if (offset != entry.getSize()) {
            throw new IOException("Failed to read complete script code for script: " + entry.getName());
        }
        fileContent = new String(buffer, "UTF-8").trim();
    } else {
        // use this method if the file size cannot be determined
        //(might be the case with jar files created with some jar tools)
        final StringBuilder out = new StringBuilder();
        final byte[] buf = new byte[1024];
        int readBytes;
        while ((readBytes = jarStream.read(buf, 0, buf.length)) > 0) {
            out.append(new String(buf, 0, readBytes, "UTF-8"));
        }
        fileContent = out.toString();
    }
    return fileContent;
}

From source file:com.amalto.workbench.utils.Util.java

public static ByteArrayOutputStream retrieveJarEntryAsBytes(File barFile, String entryName) {
    JarInputStream jarIn = null;
    ByteArrayOutputStream outBytes = new ByteArrayOutputStream();

    try {/*from   w  ww  .j  av a  2 s .co  m*/
        jarIn = new JarInputStream(new FileInputStream(barFile));
        JarEntry entry;
        byte[] buf = new byte[4096];
        while ((entry = jarIn.getNextJarEntry()) != null) {
            if (entry.toString().equals(entryName)) {
                int read;
                while ((read = jarIn.read(buf, 0, 4096)) != -1) {
                    outBytes.write(buf, 0, read);
                }
                if (outBytes.toByteArray().length > 0) {
                    return outBytes;
                }
            }
        }
    } catch (Exception e) {
    }
    return null;
}