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

Example 16 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 17 with JarInputStream

use of java.util.jar.JarInputStream in project MinecraftForge by MinecraftForge.

the class ClassPatchManager method setup.

public void setup(Side side) {
    Pattern binpatchMatcher = Pattern.compile(String.format("binpatch/%s/.*.binpatch", side.toString().toLowerCase(Locale.ENGLISH)));
    JarInputStream jis;
    try {
        InputStream binpatchesCompressed = getClass().getResourceAsStream("/binpatches.pack.lzma");
        if (binpatchesCompressed == null) {
            FMLRelaunchLog.log(Level.ERROR, "The binary patch set is missing. Either you are in a development environment, or things are not going to work!");
            return;
        }
        LzmaInputStream binpatchesDecompressed = new LzmaInputStream(binpatchesCompressed);
        ByteArrayOutputStream jarBytes = new ByteArrayOutputStream();
        JarOutputStream jos = new JarOutputStream(jarBytes);
        Pack200.newUnpacker().unpack(binpatchesDecompressed, jos);
        jis = new JarInputStream(new ByteArrayInputStream(jarBytes.toByteArray()));
    } catch (Exception e) {
        FMLRelaunchLog.log(Level.ERROR, e, "Error occurred reading binary patches. Expect severe problems!");
        throw Throwables.propagate(e);
    }
    patches = ArrayListMultimap.create();
    do {
        try {
            JarEntry entry = jis.getNextJarEntry();
            if (entry == null) {
                break;
            }
            if (binpatchMatcher.matcher(entry.getName()).matches()) {
                ClassPatch cp = readPatch(entry, jis);
                if (cp != null) {
                    patches.put(cp.sourceClassName, cp);
                }
            } else {
                jis.closeEntry();
            }
        } catch (IOException e) {
        }
    } while (true);
    FMLRelaunchLog.fine("Read %d binary patches", patches.size());
    if (DEBUG)
        FMLRelaunchLog.fine("Patch list :\n\t%s", Joiner.on("\t\n").join(patches.asMap().entrySet()));
    patchedClasses.clear();
}

Example 18 with JarInputStream

use of java.util.jar.JarInputStream in project buck by facebook.

the class HashingDeterministicJarWriterTest method entriesAreWrittenAsTheyAreEncounteredWithManifestLast.

@Test
public void entriesAreWrittenAsTheyAreEncounteredWithManifestLast() throws IOException {
    writer.writeEntry("Z", new ByteArrayInputStream("Z's contents".getBytes(StandardCharsets.UTF_8)));
    writer.writeEntry("A", new ByteArrayInputStream("A's contents".getBytes(StandardCharsets.UTF_8)));
    writer.close();
    try (JarInputStream jar = new JarInputStream(new ByteArrayInputStream(out.toByteArray()))) {
        JarEntry entry;
        entry = jar.getNextJarEntry();
        assertEquals("Z", entry.getName());
        entry = jar.getNextJarEntry();
        assertEquals("A", entry.getName());
        entry = jar.getNextJarEntry();
        assertEquals(JarFile.MANIFEST_NAME, entry.getName());
    }
}

Example 19 with JarInputStream

use of java.util.jar.JarInputStream in project buck by facebook.

the class FakeProjectFilesystem method getJarManifest.

@Override
public Manifest getJarManifest(Path path) throws IOException {
    try (JarInputStream jar = new JarInputStream(newFileInputStream(path))) {
        Manifest result = jar.getManifest();
        if (result != null) {
            return result;
        }
        // JarInputStream will only find the manifest if it's the first entry, but we have code that
        // puts it elsewhere. We must search. Fortunately, this is test code! So we can be slow!
        JarEntry entry;
        while ((entry = jar.getNextJarEntry()) != null) {
            if (JarFile.MANIFEST_NAME.equals(entry.getName())) {
                result = new Manifest();
                result.read(jar);
                return result;
            }
        }
    }
    return null;
}

Example 20 with JarInputStream

use of java.util.jar.JarInputStream in project mybatis-3 by mybatis.

the class DefaultVFS method list.

@Override
public List<String> list(URL url, String path) throws IOException {
    InputStream is = null;
    try {
        List<String> resources = new ArrayList<String>();
        // First, try to find the URL of a JAR file containing the requested resource. If a JAR
        // file is found, then we'll list child resources by reading the JAR.
        URL jarUrl = findJarForResource(url);
        if (jarUrl != null) {
            is = jarUrl.openStream();
            if (log.isDebugEnabled()) {
                log.debug("Listing " + url);
            }
            resources = listResources(new JarInputStream(is), path);
        } else {
            List<String> children = new ArrayList<String>();
            try {
                if (isJar(url)) {
                    // Some versions of JBoss VFS might give a JAR stream even if the resource
                    // referenced by the URL isn't actually a JAR
                    is = url.openStream();
                    JarInputStream jarInput = new JarInputStream(is);
                    if (log.isDebugEnabled()) {
                        log.debug("Listing " + url);
                    }
                    for (JarEntry entry; (entry = jarInput.getNextJarEntry()) != null; ) {
                        if (log.isDebugEnabled()) {
                            log.debug("Jar entry: " + entry.getName());
                        }
                        children.add(entry.getName());
                    }
                    jarInput.close();
                } else {
                    /*
             * Some servlet containers allow reading from directory resources like a
             * text file, listing the child resources one per line. However, there is no
             * way to differentiate between directory and file resources just by reading
             * them. To work around that, as each line is read, try to look it up via
             * the class loader as a child of the current resource. If any line fails
             * then we assume the current resource is not a directory.
             */
                    is = url.openStream();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(is));
                    List<String> lines = new ArrayList<String>();
                    for (String line; (line = reader.readLine()) != null; ) {
                        if (log.isDebugEnabled()) {
                            log.debug("Reader entry: " + line);
                        }
                        lines.add(line);
                        if (getResources(path + "/" + line).isEmpty()) {
                            lines.clear();
                            break;
                        }
                    }
                    if (!lines.isEmpty()) {
                        if (log.isDebugEnabled()) {
                            log.debug("Listing " + url);
                        }
                        children.addAll(lines);
                    }
                }
            } catch (FileNotFoundException e) {
                /*
           * For file URLs the openStream() call might fail, depending on the servlet
           * container, because directories can't be opened for reading. If that happens,
           * then list the directory directly instead.
           */
                if ("file".equals(url.getProtocol())) {
                    File file = new File(url.getFile());
                    if (log.isDebugEnabled()) {
                        log.debug("Listing directory " + file.getAbsolutePath());
                    }
                    if (file.isDirectory()) {
                        if (log.isDebugEnabled()) {
                            log.debug("Listing " + url);
                        }
                        children = Arrays.asList(file.list());
                    }
                } else {
                    // No idea where the exception came from so rethrow it
                    throw e;
                }
            }
            // The URL prefix to use when recursively listing child resources
            String prefix = url.toExternalForm();
            if (!prefix.endsWith("/")) {
                prefix = prefix + "/";
            }
            // Iterate over immediate children, adding files and recursing into directories
            for (String child : children) {
                String resourcePath = path + "/" + child;
                resources.add(resourcePath);
                URL childUrl = new URL(prefix + child);
                resources.addAll(list(childUrl, resourcePath));
            }
        }
        return resources;
    } finally {
        if (is != null) {
            try {
                is.close();
            } catch (Exception e) {
            // Ignore
            }
        }
    }
}