net.sourceforge.plantuml.swing.DirWatcher2 Maven / Gradle / Ivy

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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
package net.sourceforge.plantuml.swing;

import java.io.File;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import net.sourceforge.plantuml.GeneratedImage;
import net.sourceforge.plantuml.Option;
import net.sourceforge.plantuml.SourceFileReader;
import net.sourceforge.plantuml.file.FileWatcher;
import net.sourceforge.plantuml.log.Logme;
import net.sourceforge.plantuml.preproc.FileWithSuffix;

public class DirWatcher2 {
	// ::remove file when __CORE__

	final private File dir;
	final private Option option;
	final private String pattern;

	final private Map modifieds = new ConcurrentHashMap();
	final private ExecutorService executorService;

	public DirWatcher2(File dir, Option option, String pattern) {
		this.dir = dir;
		this.option = option;
		this.pattern = pattern;
		final int nb = Option.defaultNbThreads();
		this.executorService = Executors.newFixedThreadPool(nb);

	}

	public Map>> buildCreatedFiles() throws IOException, InterruptedException {
		final Map>> result = new TreeMap>>();
		if (dir.listFiles() != null)
			for (final File f : dir.listFiles()) {
				if (f.isFile() == false)
					continue;

				if (fileToProcess(f.getName()) == false)
					continue;

				final FileWatcher watcher = modifieds.get(f);

				if (watcher == null || watcher.hasChanged()) {
					final SourceFileReader sourceFileReader = new SourceFileReader(option.getDefaultDefines(f), f,
							option.getOutputDir(), option.getConfig(), option.getCharset(),
							option.getFileFormatOption());
					modifieds.put(f, new FileWatcher(Collections.singleton(f)));
					final Future> value = executorService
							.submit(new Callable>() {
								public List call() throws Exception {
									try {
										final List generatedImages = sourceFileReader
												.getGeneratedImages();
										final Set files = FileWithSuffix
												.convert(sourceFileReader.getIncludedFiles());
										files.add(f);
										modifieds.put(f, new FileWatcher(files));
										return Collections.unmodifiableList(generatedImages);
									} catch (Exception e) {
										Logme.error(e);
										return Collections.emptyList();
									}
								}
							});
					result.put(f, value);
				}
			}
		return Collections.unmodifiableMap(result);
	}

	private boolean fileToProcess(String name) {
		return name.matches(pattern);
	}

	public final File getDir() {
		return dir;
	}

	public void cancel() {
		executorService.shutdownNow();
	}

	public void waitEnd() throws InterruptedException {
		executorService.shutdown();
		executorService.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
	}

}