Example usage for java.util.jar JarFile size

Introduction

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

Prototype

public int size() 

Source Link

Document

Returns the number of entries in the ZIP file.

Usage

From source file:hermes.impl.LoaderSupport.java

/**
 * Return ClassLoader given the list of ClasspathConfig instances. The
 * resulting loader can then be used to instantiate providers from those
 * libraries./*  w w  w  .j  a  v a  2 s .  co  m*/
 */
static List lookForFactories(final List loaderConfigs, final ClassLoader baseLoader) throws IOException {
    final List rval = new ArrayList();

    for (Iterator iter = loaderConfigs.iterator(); iter.hasNext();) {
        final ClasspathConfig lConfig = (ClasspathConfig) iter.next();

        if (lConfig.getFactories() != null) {
            log.debug("using cached " + lConfig.getFactories());

            for (StringTokenizer tokens = new StringTokenizer(lConfig.getFactories(), ","); tokens
                    .hasMoreTokens();) {
                rval.add(tokens.nextToken());
            }
        } else if (lConfig.isNoFactories()) {
            log.debug("previously scanned " + lConfig.getJar());
        } else {
            Runnable r = new Runnable() {
                public void run() {
                    final List localFactories = new ArrayList();
                    boolean foundFactory = false;
                    StringBuffer factoriesAsString = null;

                    try {
                        log.debug("searching " + lConfig.getJar());

                        ClassLoader l = createClassLoader(loaderConfigs, baseLoader);
                        JarFile jarFile = new JarFile(lConfig.getJar());
                        ProgressMonitor monitor = null;
                        int entryNumber = 0;

                        if (HermesBrowser.getBrowser() != null) {
                            monitor = new ProgressMonitor(HermesBrowser.getBrowser(),
                                    "Looking for factories in " + lConfig.getJar(), "Scanning...", 0,
                                    jarFile.size());
                            monitor.setMillisToDecideToPopup(0);
                            monitor.setMillisToPopup(0);
                            monitor.setProgress(0);
                        }

                        for (Enumeration iter = jarFile.entries(); iter.hasMoreElements();) {
                            ZipEntry entry = (ZipEntry) iter.nextElement();
                            entryNumber++;

                            if (monitor != null) {
                                monitor.setProgress(entryNumber);
                                monitor.setNote("Checking entry " + entryNumber + " of " + jarFile.size());
                            }

                            if (entry.getName().endsWith(".class")) {
                                String s = entry.getName().substring(0, entry.getName().indexOf(".class"));

                                s = s.replaceAll("/", ".");

                                try {
                                    if (s.startsWith("hermes.browser") || s.startsWith("hermes.impl")
                                            || s.startsWith("javax.jms")) {
                                        // NOP
                                    } else {
                                        Class clazz = l.loadClass(s);

                                        if (!clazz.isInterface()) {

                                            if (implementsOrExtends(clazz, ConnectionFactory.class)) {

                                                foundFactory = true;
                                                localFactories.add(s);

                                                if (factoriesAsString == null) {
                                                    factoriesAsString = new StringBuffer();
                                                    factoriesAsString.append(clazz.getName());
                                                } else {
                                                    factoriesAsString.append(",").append(clazz.getName());
                                                }
                                                log.debug("found " + clazz.getName());
                                            }
                                        }

                                        /**
                                         * TODO: remove Class clazz = l.loadClass(s);
                                         * Class[] interfaces = clazz.getInterfaces();
                                         * for (int i = 0; i < interfaces.length; i++) {
                                         * if
                                         * (interfaces[i].equals(TopicConnectionFactory.class) ||
                                         * interfaces[i].equals(QueueConnectionFactory.class) ||
                                         * interfaces[i].equals(ConnectionFactory.class)) {
                                         * foundFactory = true; localFactories.add(s);
                                         * if (factoriesAsString == null) {
                                         * factoriesAsString = new
                                         * StringBuffer(clazz.getName()); } else {
                                         * factoriesAsString.append(",").append(clazz.getName()); }
                                         * log.debug("found " + clazz.getName()); } }
                                         */
                                    }
                                } catch (Throwable t) {
                                    // NOP
                                }
                            }
                        }
                    } catch (IOException e) {
                        log.error("unable to access jar/zip " + lConfig.getJar() + ": " + e.getMessage(), e);
                    }

                    if (!foundFactory) {
                        lConfig.setNoFactories(true);
                    } else {
                        lConfig.setFactories(factoriesAsString.toString());
                        rval.addAll(localFactories);
                    }

                }
            };

            r.run();

        }
    }

    return rval;
}

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From source file:com.cwctravel.jenkinsci.plugins.htmlresource.HTMLResourceManagement.java

private boolean validateWebJAR(File file) throws IOException {
    boolean result = false;
    if (file.getName().endsWith(".jar")) {
        JarFile jarFile = new JarFile(file);
        try {/*www . j  a v a  2  s.c  o m*/
            result = jarFile.size() > 0;
        } finally {
            jarFile.close();
        }
    }

    return result;
}

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From source file:org.rhq.enterprise.server.core.plugin.ProductPluginDeployer.java

private boolean isDeploymentValidZipFile(File pluginFile) {
    boolean isValid;
    JarFile jarFile = null;
    try {/* ww  w  .j  av  a 2  s .co  m*/
        // Try to access the plugin jar using the JarFile API.
        // Any weird errors usually mean the file is currently being written but isn't finished yet.
        // Errors could also mean the file is simply corrupted.
        jarFile = new JarFile(pluginFile);
        if (jarFile.size() <= 0) {
            throw new Exception("There are no entries in the plugin file");
        }
        JarEntry entry = jarFile.entries().nextElement();
        entry.getName();
        isValid = true;
    } catch (Exception e) {
        log.info("File [" + pluginFile + "] is not a valid jarfile - "
                + " the file may not have been fully written yet. Cause: " + e);
        isValid = false;
    } finally {
        if (jarFile != null) {
            try {
                jarFile.close();
            } catch (Exception e) {
                log.error("Failed to close jar file [" + pluginFile + "]");
            }
        }
    }
    return isValid;
}

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