Java Scanner类代码示例

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public void execute(MavenProject mavenProject, Store store) throws MojoExecutionException, MojoFailureException {
    ScannerConfiguration configuration = new ScannerConfiguration();
    configuration.setContinueOnError(continueOnError);
    ScannerContext scannerContext = new ScannerContextImpl(store);
    ScannerPluginRepository scannerPluginRepository = pluginRepositoryProvider.getScannerPluginRepository();
    Map<String, ScannerPlugin<?, ?>> scannerPlugins;
    try {
        scannerPlugins = scannerPluginRepository.getScannerPlugins(scannerContext, getPluginProperties());
    } catch (PluginRepositoryException e) {
        throw new MojoExecutionException("Cannot determine scanner plugins.", e);
    }
    ScopePluginRepository scopePluginRepository = pluginRepositoryProvider.getScopePluginRepository();
    Scanner scanner = new ScannerImpl(configuration, scannerContext, scannerPlugins, scopePluginRepository.getScopes());
    store.beginTransaction();
    try {
        scanner.scan(mavenProject, mavenProject.getFile().getAbsolutePath(), MavenScope.PROJECT);
    } finally {
        store.commitTransaction();
    }
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public ManifestFileDescriptor scan(FileResource item, String path, Scope scope, Scanner scanner) throws IOException {
    try (InputStream stream = item.createStream()) {
        Manifest manifest = new Manifest(stream);
        ScannerContext context = scanner.getContext();
        Store store = context.getStore();
        FileDescriptor fileDescriptor = context.getCurrentDescriptor();
        ManifestFileDescriptor manifestFileDescriptor = store.addDescriptorType(fileDescriptor, ManifestFileDescriptor.class);
        ManifestSectionDescriptor mainSectionDescriptor = store.create(ManifestSectionDescriptor.class);
        mainSectionDescriptor.setName(SECTION_MAIN);
        manifestFileDescriptor.setMainSection(mainSectionDescriptor);
        readSection(manifest.getMainAttributes(), mainSectionDescriptor, store);
        for (Map.Entry<String, Attributes> sectionEntry : manifest.getEntries().entrySet()) {
            ManifestSectionDescriptor sectionDescriptor = store.create(ManifestSectionDescriptor.class);
            sectionDescriptor.setName(sectionEntry.getKey());
            readSection(sectionEntry.getValue(), sectionDescriptor, store);
            manifestFileDescriptor.getManifestSections().add(sectionDescriptor);
        }
        return manifestFileDescriptor;
    }
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public ClassFileDescriptor scan(FileResource file, String path, Scope scope, final Scanner scanner) throws IOException {
    final FileDescriptor fileDescriptor = scanner.getContext().getCurrentDescriptor();
    VisitorHelper visitorHelper = new VisitorHelper(scanner.getContext(), classModelConfiguration);
    final ClassVisitor visitor = new ClassVisitor(fileDescriptor, visitorHelper);
    ClassFileDescriptor classFileDescriptor;
    try (InputStream stream = file.createStream()) {
        classFileDescriptor = MD5DigestDelegate.getInstance().digest(stream, new MD5DigestDelegate.DigestOperation<ClassFileDescriptor>() {
            @Override
            public ClassFileDescriptor execute(InputStream inputStream) throws IOException {
                new ClassReader(inputStream).accept(visitor, 0);
                return visitor.getTypeDescriptor();
            }
        });
        classFileDescriptor.setValid(true);
    } catch (RuntimeException e) {
        LOGGER.warn("Cannot scan class '" + path + "'.", e);
        classFileDescriptor = visitor.getTypeDescriptor();
        if (classFileDescriptor == null) {
            classFileDescriptor = scanner.getContext().getStore().addDescriptorType(fileDescriptor, ClassFileDescriptor.class);
        }
        classFileDescriptor.setValid(false);
    }
    return classFileDescriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public PropertyFileDescriptor scan(FileResource item, String path, Scope scope, Scanner scanner) throws IOException {
    ScannerContext context = scanner.getContext();
    Store store = context.getStore();
    FileDescriptor fileDescriptor = context.getCurrentDescriptor();
    PropertyFileDescriptor propertyFileDescriptor = store.addDescriptorType(fileDescriptor, PropertyFileDescriptor.class);
    Properties properties = new Properties();
    try (InputStream stream = item.createStream()) {
        properties.load(stream);
    } catch (IllegalArgumentException e) {
        LOGGER.warn("Cannot load properties from '" + path + "': " + e.getMessage());
    }
    for (String name : properties.stringPropertyNames()) {
        String value = properties.getProperty(name);
        PropertyDescriptor propertyDescriptor = store.create(PropertyDescriptor.class);
        propertyDescriptor.setName(name);
        propertyDescriptor.setValue(value);
        propertyFileDescriptor.getProperties().add(propertyDescriptor);
    }
    return propertyFileDescriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public ServiceLoaderDescriptor scan(FileResource item, String path, Scope scope, Scanner scanner) throws IOException {
    Matcher matcher = PATTERN.matcher(path);
    if (!matcher.matches()) {
        throw new IOException("Cannot match path name: " + path);
    }
    String serviceInterface = matcher.group(2);
    ScannerContext context = scanner.getContext();
    FileDescriptor fileDescriptor = context.getCurrentDescriptor();
    ServiceLoaderDescriptor serviceLoaderDescriptor = context.getStore().addDescriptorType(fileDescriptor, ServiceLoaderDescriptor.class);
    TypeDescriptor interfaceTypeDescriptor = getTypeDescriptor(serviceInterface, context);
    serviceLoaderDescriptor.setType(interfaceTypeDescriptor);

    try (InputStream stream = item.createStream()) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
        String serviceImplementation;
        while ((serviceImplementation = reader.readLine()) != null) {
            if (!isEmptyOrComment(serviceImplementation)) {
                TypeDescriptor implementationTypeDescriptor = getTypeDescriptor(serviceImplementation, context);
                serviceLoaderDescriptor.getContains().add(implementationTypeDescriptor);
            }
        }
    }
    return serviceLoaderDescriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public PackageDescriptor scan(DirectoryResource item, String path, Scope scope, Scanner scanner) throws IOException {
    ScannerContext context = scanner.getContext();
    DirectoryDescriptor directoryDescriptor = context.getCurrentDescriptor();
    PackageDescriptor descriptor = context.getStore().addDescriptorType(directoryDescriptor, PackageDescriptor.class);
    String packageName = path.substring(1).replaceAll("/", ".");
    String name;
    int separatorIndex = packageName.lastIndexOf('.');
    if (separatorIndex != -1) {
        name = packageName.substring(separatorIndex + 1);
    } else {
        name = packageName;
    }
    descriptor.setName(name);
    descriptor.setFullQualifiedName(packageName);
    return descriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public PropertyFileDescriptor scan(FileResource item, String path, Scope scope, Scanner scanner) throws IOException {
    ScannerContext context = scanner.getContext();
    Store store = context.getStore();
    FileDescriptor fileDescriptor = context.getCurrentDescriptor();
    Class<XmlPropertyFileDescriptor> descriptorType = XmlPropertyFileDescriptor.class;
    PropertyFileDescriptor propertyFileDescriptor = store.addDescriptorType(fileDescriptor, descriptorType);
    Properties properties = new Properties();
    try (InputStream stream = item.createStream()) {
        properties.loadFromXML(stream);
    } catch (IllegalArgumentException e) {
        LOGGER.warn("Cannot load properties from '" + path + "': " + e.getMessage());
    }

    for (String name : properties.stringPropertyNames()) {
        String value = properties.getProperty(name);
        PropertyDescriptor propertyDescriptor = store.create(PropertyDescriptor.class);
        propertyDescriptor.setName(name);
        propertyDescriptor.setValue(value);
        propertyFileDescriptor.getProperties().add(propertyDescriptor);
    }
    return propertyFileDescriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
/**
 * Executes the given scan operation.
 * 
 * @param artifactId
 *            The artifact id of the artifact to push on the context.
 * @param operation
 *            The operation.
 */
protected List<? extends FileDescriptor> execute(String artifactId, ScanClassPathOperation operation) {
    Scanner scanner = getScanner();
    ScannerContext context = scanner.getContext();
    store.beginTransaction();
    JavaArtifactFileDescriptor artifact = getArtifactDescriptor(artifactId);
    artifact.setFullQualifiedName(artifactId);
    context.push(JavaArtifactFileDescriptor.class, artifact);
    ContainerFileResolver fileResolverStrategy = new ContainerFileResolver(artifact);
    context.push(FileResolver.class, fileResolverStrategy);

    List<? extends FileDescriptor> descriptors = execute(artifact, operation, scanner);
    for (FileDescriptor descriptor : descriptors) {
        fileResolverStrategy.put(descriptor.getFileName(), descriptor);
    }

    context.pop(JavaArtifactFileDescriptor.class);
    context.pop(FileResolver.class);
    fileResolverStrategy.flush();
    store.commitTransaction();
    return descriptors;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
/**
 * Verifies that any files not representing service descriptors are ignored.
 *
 * @throws java.io.IOException
 *             If the test fails.
 */
@Test
public void invalidDescriptor() throws IOException {
    File file = getClassesDirectory(ServiceLoaderIT.class);
    final File propsFile = new File(file, "META-INF/test.properties");
    final String path = "META-INF/services/test.properties";
    store.beginTransaction();
    JavaClassesDirectoryDescriptor artifactDescriptor = getArtifactDescriptor("a1");
    execute(artifactDescriptor, new ScanClassPathOperation() {
        @Override
        public List<FileDescriptor> scan(JavaArtifactFileDescriptor artifact, Scanner scanner) {
            return singletonList(scanner.<File, FileDescriptor>scan(propsFile, path, JavaScope.CLASSPATH));
        }
    }, getScanner());
    List<ServiceLoaderDescriptor> s = query("MATCH (s:ServiceLoader:Properties:File) RETURN s").getColumn("s");
    assertThat(s.size(), equalTo(1));
    ServiceLoaderDescriptor serviceLoaderDescriptor = s.get(0);
    assertThat(serviceLoaderDescriptor.getFileName(), equalTo(path));
    store.commitTransaction();
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public PlaintextFileDescriptor scan(final FileResource item, final String path, final Scope scope, final Scanner scanner) throws IOException {
    final Store store = scanner.getContext().getStore();
    final PlaintextFileDescriptor plaintextFileDescriptor = store.create(PlaintextFileDescriptor.class);
    plaintextFileDescriptor.setFileName(path);

    try (BufferedReader reader = new BufferedReader(new InputStreamReader(item.createStream()))) {
        final PlaintextLineParser pumlLineParser = new PlaintextLineParser(store, plaintextFileDescriptor);
        String line;
        while ((line = reader.readLine()) != null) {
            pumlLineParser.parseLine(line);
        }
    }

    return plaintextFileDescriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public PlantUmlFileDescriptor scan(final FileResource item, final String path, final Scope scope, final Scanner scanner) throws IOException {
    final Store store = scanner.getContext().getStore();
    final PlantUmlFileDescriptor plantUmlFileDescriptor = store.create(PlantUmlFileDescriptor.class);
    plantUmlFileDescriptor.setFileName(path);

    try (BufferedReader reader = new BufferedReader(new InputStreamReader(item.createStream()))) {
        final PumlLineParser pumlLineParser = new PumlLineParser(store, plantUmlFileDescriptor, path.endsWith(".puml") ? ParsingState.ACCEPTING : ParsingState.IGNORING);
        String line;
        while ((line = reader.readLine()) != null) {
            pumlLineParser.parseLine(line);
        }
    }

    return plantUmlFileDescriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public CustomDescriptor scan(FileResource item, String path, Scope scope, Scanner scanner) throws IOException {
    ClassFileDescriptor descriptor = scanner.getContext().peek(ClassFileDescriptor.class);
    String value = (String) getProperties().get(PROPERTY_VALUE);
    LOGGER.info("Using custom plugin to scan " + path + ", setting value to " + value);
    CustomDescriptor customDescriptor = scanner.getContext().getStore().migrate(descriptor, CustomDescriptor.class);
    customDescriptor.setValue(value);
    return customDescriptor;
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
@Override
public ClassFileDescriptor scan(final Class<?> item, String path, Scope scope, Scanner scanner) throws IOException {
    final String fileName = "/" + item.getName().replace('.', '/') + ".class";
    AbstractFileResource fileResource = new AbstractFileResource() {
        @Override
        public InputStream createStream() throws IOException {
            return item.getResourceAsStream(fileName);
        }
    };
    return scanner.scan(fileResource, fileName, scope);
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
/**
 * Scans the given classes.
 * 
 * @param artifactId
 *            The id of the containing artifact.
 * @param classes
 *            The classes.
 * @throws IOException
 *             If scanning fails.
 */
protected void scanClasses(String artifactId, final Class<?>... classes) throws IOException {
    execute(artifactId, new ScanClassPathOperation() {
        @Override
        public List<FileDescriptor> scan(JavaArtifactFileDescriptor artifact, Scanner scanner) {
            List<FileDescriptor> result = new ArrayList<>();
            for (Class<?> item : classes) {
                FileDescriptor fileDescriptor = scanner.scan(item, item.getName(), JavaScope.CLASSPATH);
                result.add(fileDescriptor);
            }
            return result;
        }
    });
}
 

import com.buschmais.jqassistant.core.scanner.api.Scanner; //导入依赖的package包/类
protected void scanClassPathResources(final Scope scope, String artifactId, final String... resources) throws IOException {
    final File directory = getClassesDirectory(this.getClass());
    execute(artifactId, new ScanClassPathOperation() {
        @Override
        public List<FileDescriptor> scan(JavaArtifactFileDescriptor artifact, Scanner scanner) {
            List<FileDescriptor> result = new ArrayList<>();
            for (String resource : resources) {
                File file = new File(directory, resource);
                FileDescriptor fileDescriptor = scanner.scan(file, resource, scope);
                result.add(fileDescriptor);
            }
            return result;
        }
    });
}