Example usage for java.util.jar JarInputStream JarInputStream

Introduction

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

Prototype

public JarInputStream(InputStream in) throws IOException 

Source Link

Document

Creates a new JarInputStream and reads the optional manifest.

Usage

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   w ww.  ja  v a 2s.co m*/
 */
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();
}

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From source file:org.drools.guvnor.server.contenthandler.soa.JarFileContentHandler.java

private String getClassesFromJar(AssetItem assetItem) throws IOException {
    Map<String, String> nonCollidingImports = new HashMap<String, String>();
    String assetPackageName = assetItem.getModuleName();

    //Setup class-loader to check for class visibility
    JarInputStream cljis = new JarInputStream(assetItem.getBinaryContentAttachment());
    List<JarInputStream> jarInputStreams = new ArrayList<JarInputStream>();
    jarInputStreams.add(cljis);/*from   w  w w  .  ja va 2s. c  o m*/
    ClassLoaderBuilder clb = new ClassLoaderBuilder(jarInputStreams);
    ClassLoader cl = clb.buildClassLoader();

    //Reset stream to read classes
    JarInputStream jis = new JarInputStream(assetItem.getBinaryContentAttachment());
    JarEntry entry = null;

    //Get Class names from JAR, only the first occurrence of a given Class leaf name will be inserted. Thus 
    //"org.apache.commons.lang.NumberUtils" will be imported but "org.apache.commons.lang.math.NumberUtils"
    //will not, assuming it follows later in the JAR structure.
    while ((entry = jis.getNextJarEntry()) != null) {
        if (!entry.isDirectory()) {
            if (entry.getName().endsWith(".class") && entry.getName().indexOf('$') == -1
                    && !entry.getName().endsWith("package-info.class")) {
                String fullyQualifiedName = convertPathToName(entry.getName());
                if (isClassVisible(cl, fullyQualifiedName, assetPackageName)) {
                    String leafName = getLeafName(fullyQualifiedName);
                    if (!nonCollidingImports.containsKey(leafName)) {
                        nonCollidingImports.put(leafName, fullyQualifiedName);
                    }
                }
            }
        }
    }

    //Build list of classes
    StringBuffer classes = new StringBuffer();
    for (String value : nonCollidingImports.values()) {
        classes.append(value + "\n");
    }

    return classes.toString();
}

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From source file:ezbake.frack.submitter.util.JarUtilTest.java

@Test
public void addFileToJar() throws IOException {
    File tmpDir = new File("jarUtilTest");
    try {/*from   w  w w. java  2 s.c  om*/
        tmpDir.mkdirs();

        // Push the example jar to a file
        byte[] testJar = IOUtils.toByteArray(this.getClass().getResourceAsStream("/example.jar"));
        File jarFile = new File(tmpDir, "example.jar");
        BufferedOutputStream os = new BufferedOutputStream(new FileOutputStream(jarFile));
        os.write(testJar);
        os.close();

        // Push the test content to a file
        byte[] testContent = IOUtils.toByteArray(this.getClass().getResourceAsStream("/test.txt"));
        String stringTestContent = new String(testContent);
        File testFile = new File(tmpDir, "test.txt");
        os = new BufferedOutputStream(new FileOutputStream(testFile));
        os.write(testContent);
        os.close();

        assertTrue(jarFile.exists());
        assertTrue(testFile.exists());

        // Add the new file to the jar
        File newJar = JarUtil.addFilesToJar(jarFile, Lists.newArrayList(testFile));
        assertTrue("New jar file exists", newJar.exists());
        assertTrue("New jar is a file", newJar.isFile());

        // Roll through the entries of the new jar and
        JarInputStream is = new JarInputStream(new FileInputStream(newJar));
        JarEntry entry = is.getNextJarEntry();
        boolean foundNewFile = false;
        String content = "";
        while (entry != null) {
            String name = entry.getName();
            if (name.endsWith("test.txt")) {
                foundNewFile = true;
                byte[] buffer = new byte[1];
                while ((is.read(buffer)) > 0) {
                    content += new String(buffer);
                }
                break;
            }
            entry = is.getNextJarEntry();
        }
        is.close();
        assertTrue("New file was in repackaged jar", foundNewFile);
        assertEquals("Content of added file is the same as the retrieved new file", stringTestContent, content);
    } finally {
        FileUtils.deleteDirectory(tmpDir);
    }
}

---

From source file:ArchiveUtil.java

/**
 * Extracts the file {@code archive} to the target dir {@code targetDir} and deletes the 
 * files extracted upon jvm exit if the flag {@code deleteOnExit} is true.
 *//*w  w  w. j av  a  2s.  c o m*/
public static boolean extract(URL archive, File targetDir, boolean deleteOnExit) throws IOException {
    String archiveStr = archive.toString();
    String jarEntry = null;
    int idx = archiveStr.indexOf("!/");
    if (idx != -1) {
        if (!archiveStr.startsWith("jar:") && archiveStr.length() == idx + 2)
            return false;
        archive = new URL(archiveStr.substring(4, idx));
        jarEntry = archiveStr.substring(idx + 2);
    } else if (!isSupported(archiveStr))
        return false;

    JarInputStream jis = new JarInputStream(archive.openConnection().getInputStream());
    if (!targetDir.exists())
        targetDir.mkdirs();
    JarEntry entry = null;
    while ((entry = jis.getNextJarEntry()) != null) {
        String entryName = entry.getName();
        File entryFile = new File(targetDir, entryName);
        if (!entry.isDirectory()) {
            if (jarEntry == null || entryName.startsWith(jarEntry)) {
                if (!entryFile.exists() || entryFile.lastModified() != entry.getTime())
                    extractEntry(entryFile, jis, entry, deleteOnExit);
            }
        }
    }
    try {
        jis.close();
    } catch (Exception e) {
    }
    return true;
}

---

From source file:JarHelper.java

/**
 * Given an InputStream on a jar file, unjars the contents into the given
 * directory.//from  www  .j  a  v  a2s . c o  m
 */
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:com.thoughtworks.go.util.NestedJarClassLoader.java

private URL[] enumerateJar(URL urlOfJar) {
    LOGGER.debug("Enumerating jar: {}", urlOfJar);
    List<URL> urls = new ArrayList<>();
    urls.add(urlOfJar);//w w  w  .j a va  2s. c o  m
    try {
        JarInputStream jarStream = new JarInputStream(urlOfJar.openStream());
        JarEntry entry;
        while ((entry = jarStream.getNextJarEntry()) != null) {
            if (!entry.isDirectory() && entry.getName().endsWith(".jar")) {
                urls.add(expandJarAndReturnURL(jarStream, entry));
            }
        }
    } catch (IOException e) {
        LOGGER.error("Failed to enumerate jar {}", urlOfJar, e);
    }
    return urls.toArray(new URL[0]);
}

---

From source file:org.bimserver.plugins.JarClassLoader.java

private void loadSubJars(byte[] byteArray) {
    try {/*from  w  w w.  j  a  v  a  2s . co  m*/
        JarInputStream jarInputStream = new JarInputStream(new ByteArrayInputStream(byteArray));
        JarEntry entry = jarInputStream.getNextJarEntry();
        while (entry != null) {
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            IOUtils.copy(jarInputStream, byteArrayOutputStream);
            map.put(entry.getName(), byteArrayOutputStream.toByteArray());
            entry = jarInputStream.getNextJarEntry();
        }
        jarInputStream.close();
    } catch (IOException e) {
        LOGGER.error("", e);
    }
}

---

From source file:com.dragome.callbackevictor.serverside.utils.RewritingUtils.java

public static boolean rewriteJar(final JarInputStream pInput, final ResourceTransformer transformer,
        final JarOutputStream pOutput, final Matcher pMatcher) throws IOException {

    boolean changed = false;

    while (true) {
        final JarEntry entry = pInput.getNextJarEntry();

        if (entry == null) {
            break;
        }/*from   w ww .  ja v a2s .co  m*/

        if (entry.isDirectory()) {
            pOutput.putNextEntry(new JarEntry(entry));
            continue;
        }

        final String name = entry.getName();

        pOutput.putNextEntry(new JarEntry(name));

        if (name.endsWith(".class")) {
            if (pMatcher.isMatching(name)) {

                if (log.isDebugEnabled()) {
                    log.debug("transforming " + name);
                }

                final byte[] original = toByteArray(pInput);

                byte[] transformed = transformer.transform(original);

                pOutput.write(transformed);

                changed |= transformed.length != original.length;

                continue;
            }
        } else if (name.endsWith(".jar") || name.endsWith(".ear") || name.endsWith(".zip")
                || name.endsWith(".war")) {

            changed |= rewriteJar(new JarInputStream(pInput), transformer, new JarOutputStream(pOutput),
                    pMatcher);

            continue;
        }

        int length = copy(pInput, pOutput);

        log.debug("copied " + name + "(" + length + ")");
    }

    pInput.close();
    pOutput.close();

    return changed;
}

---

From source file:ru.codeinside.adm.ui.UploadDeployer.java

private void checkSupportInterface(Upload.SucceededEvent event, String supportedInterface) throws Exception {
    if (!event.getFilename().endsWith(".jar")) {
        throw new Exception("? jar ");
    }//w  ww  .  j a  v  a2 s . co m
    JarInputStream jarStream = null;
    try {
        jarStream = new JarInputStream(new ByteArrayInputStream(fileData));
        if (!isOsgiComponent(jarStream)) {
            throw new Exception("? osgi ");
        }
        if (!hasApiServer(supportedInterface, jarStream)) {
            throw new Exception("?  ? [" + supportedInterface + "]");
        }
    } finally {
        if (jarStream != null) {
            jarStream.close();
        }
    }
}

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From source file:petascope.util.IOUtil.java

public static List<String> filesInJarDir(String jarDir) {
    List<String> ret = new ArrayList<String>();
    JarInputStream jfile = null;//from  ww w.jav a2 s. c  o m
    try {
        // path to the jar
        String jarPath = IOUtil.class.getResource("").getPath();
        jarPath = jarPath.substring(0, jarPath.indexOf("!"));

        File file = new File(new URI(jarPath));
        jfile = new JarInputStream(new FileInputStream(file));
        JarEntry entry = null;
        do {
            try {
                entry = jfile.getNextJarEntry();
                if (entry == null) {
                    continue;
                }
                String sentry = entry.toString();
                if (("/" + sentry).contains(jarDir) && !sentry.endsWith("/")) {
                    ret.add(sentry);
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        } while (entry != null);
    } catch (Exception ex) {
        ex.printStackTrace();
    } finally {
        try {
            jfile.close();
        } catch (Exception ex) {
        }
        return ret;
    }
}

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