Examples with JarInputStream java.util.jar.JarInputStream used on opensource projects

Example 1 with JarInputStream

use of java.util.jar.JarInputStream in project camel by apache.

the class DefaultPackageScanClassResolver method doLoadJarClassEntries.

/**
     * Loads all the class entries from the JAR.
     *
     * @param stream  the inputstream of the jar file to be examined for classes
     * @param urlPath the url of the jar file to be examined for classes
     * @return all the .class entries from the JAR
     */
protected List<String> doLoadJarClassEntries(InputStream stream, String urlPath) {
    List<String> entries = new ArrayList<String>();
    JarInputStream jarStream = null;
    try {
        jarStream = new JarInputStream(stream);
        JarEntry entry;
        while ((entry = jarStream.getNextJarEntry()) != null) {
            String name = entry.getName();
            if (name != null) {
                name = name.trim();
                if (!entry.isDirectory() && name.endsWith(".class")) {
                    entries.add(name);
                }
            }
        }
    } catch (IOException ioe) {
        log.warn("Cannot search jar file '" + urlPath + " due to an IOException: " + ioe.getMessage(), ioe);
    } finally {
        IOHelper.close(jarStream, urlPath, log);
    }
    return entries;
}

Example 2 with JarInputStream

use of java.util.jar.JarInputStream in project hbase by apache.

the class ClassFinder method findClassesFromJar.

private Set<Class<?>> findClassesFromJar(String jarFileName, String packageName, boolean proceedOnExceptions) throws IOException, ClassNotFoundException, LinkageError {
    JarInputStream jarFile = null;
    try {
        jarFile = new JarInputStream(new FileInputStream(jarFileName));
    } catch (IOException ioEx) {
        LOG.warn("Failed to look for classes in " + jarFileName + ": " + ioEx);
        throw ioEx;
    }
    Set<Class<?>> classes = new HashSet<>();
    JarEntry entry = null;
    try {
        while (true) {
            try {
                entry = jarFile.getNextJarEntry();
            } catch (IOException ioEx) {
                if (!proceedOnExceptions) {
                    throw ioEx;
                }
                LOG.warn("Failed to get next entry from " + jarFileName + ": " + ioEx);
                break;
            }
            if (entry == null) {
                // loop termination condition
                break;
            }
            String className = entry.getName();
            if (!className.endsWith(CLASS_EXT)) {
                continue;
            }
            int ix = className.lastIndexOf('/');
            String fileName = (ix >= 0) ? className.substring(ix + 1) : className;
            if (null != this.fileNameFilter && !this.fileNameFilter.isCandidateFile(fileName, className)) {
                continue;
            }
            className = className.substring(0, className.length() - CLASS_EXT.length()).replace('/', '.');
            if (!className.startsWith(packageName)) {
                continue;
            }
            Class<?> c = makeClass(className, proceedOnExceptions);
            if (c != null) {
                if (!classes.add(c)) {
                    LOG.warn("Ignoring duplicate class " + className);
                }
            }
        }
        return classes;
    } finally {
        jarFile.close();
    }
}

Example 3 with JarInputStream

use of java.util.jar.JarInputStream in project tomcat by apache.

the class JarWarResource method getJarInputStreamWrapper.

@Override
protected JarInputStreamWrapper getJarInputStreamWrapper() {
    JarFile warFile = null;
    JarInputStream jarIs = null;
    JarEntry entry = null;
    try {
        warFile = getArchiveResourceSet().openJarFile();
        JarEntry jarFileInWar = warFile.getJarEntry(archivePath);
        InputStream isInWar = warFile.getInputStream(jarFileInWar);
        jarIs = new JarInputStream(isInWar);
        entry = jarIs.getNextJarEntry();
        while (entry != null && !entry.getName().equals(getResource().getName())) {
            entry = jarIs.getNextJarEntry();
        }
        if (entry == null) {
            return null;
        }
        return new JarInputStreamWrapper(entry, jarIs);
    } catch (IOException e) {
        if (log.isDebugEnabled()) {
            log.debug(sm.getString("jarResource.getInputStreamFail", getResource().getName(), getBaseUrl()), e);
        }
        return null;
    } finally {
        if (entry == null) {
            if (jarIs != null) {
                try {
                    jarIs.close();
                } catch (IOException ioe) {
                // Ignore
                }
            }
            if (warFile != null) {
                getArchiveResourceSet().closeJarFile();
            }
        }
    }
}

Example 4 with JarInputStream

use of java.util.jar.JarInputStream in project weave by continuuity.

the class WeaveLauncher method unJar.

private static void unJar(File jarFile, File targetDir) throws IOException {
    JarInputStream jarInput = new JarInputStream(new FileInputStream(jarFile));
    try {
        JarEntry jarEntry = jarInput.getNextJarEntry();
        while (jarEntry != null) {
            File target = new File(targetDir, jarEntry.getName());
            if (jarEntry.isDirectory()) {
                target.mkdirs();
            } else {
                target.getParentFile().mkdirs();
                copy(jarInput, target);
            }
            jarEntry = jarInput.getNextJarEntry();
        }
    } finally {
        jarInput.close();
    }
}

Example 5 with JarInputStream

use of java.util.jar.JarInputStream in project weave by continuuity.

the class ApplicationBundlerTest method unjar.

private void unjar(File jarFile, File targetDir) throws IOException {
    JarInputStream jarInput = new JarInputStream(new FileInputStream(jarFile));
    try {
        JarEntry jarEntry = jarInput.getNextJarEntry();
        while (jarEntry != null) {
            File target = new File(targetDir, jarEntry.getName());
            if (jarEntry.isDirectory()) {
                target.mkdirs();
            } else {
                target.getParentFile().mkdirs();
                ByteStreams.copy(jarInput, Files.newOutputStreamSupplier(target));
            }
            jarEntry = jarInput.getNextJarEntry();
        }
    } finally {
        jarInput.close();
    }
}