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PlantUML is a component that allows to quickly write diagrams from text.

There is a newer version: 1.2025.0

// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
package net.sourceforge.plantuml;

import java.io.IOException;

import net.sourceforge.plantuml.security.SFile;
import net.sourceforge.plantuml.security.SecurityUtils;
import net.sourceforge.plantuml.utils.Log;

public class FileSystem {
	// ::remove file when __HAXE__

	private final static FileSystem singleton = new FileSystem();

	private ThreadLocal currentDir = new ThreadLocal<>();

	private FileSystem() {
		reset();
	}

	public static FileSystem getInstance() {
		return singleton;
	}

	public void setCurrentDir(SFile dir) {
		if (dir == null) {
			this.currentDir.set(null);
		} else {
			Log.info("Setting current dir: " + dir.getAbsolutePath());
			this.currentDir.set(dir.getAbsolutePath());
		}
	}

	public SFile getCurrentDir() {
		// ::comment when __CORE__
		final String path = this.currentDir.get();
		if (path != null)
			return new SFile(path);

		return null;
	}

	public SFile getFile(String nameOrPath) throws IOException {
		// ::uncomment when __CORE__
		// return null;

		// ::comment when __CORE__
		if (isAbsolute(nameOrPath)) {
			final SFile result = new SFile(nameOrPath);
			Log.info("Trying " + result.getAbsolutePath());
			return result.getCanonicalFile();
		}

		final SFile dir = getCurrentDir();
		SFile filecurrent = null;
		if (dir != null) {
			filecurrent = dir.getAbsoluteFile().file(nameOrPath);
			Log.info("Current dir is " + dir.getAbsolutePath() + " so trying " + filecurrent.getAbsolutePath());
			if (filecurrent.exists())
				return filecurrent.getCanonicalFile();

		}
		for (SFile d : SecurityUtils.getPath(SecurityUtils.PATHS_INCLUDES)) {
			assert d.isDirectory();
			final SFile file = d.file(nameOrPath);
			if (file.exists())
				return file.getCanonicalFile();
		}
		for (SFile d : SecurityUtils.getPath(SecurityUtils.PATHS_CLASSES)) {
			assert d.isDirectory();
			final SFile file = d.file(nameOrPath);
			if (file.exists())
				return file.getCanonicalFile();

		}
		if (dir == null) {
			assert filecurrent == null;
			return new SFile(nameOrPath).getCanonicalFile();
		}
		assert filecurrent != null;
		return filecurrent;
	}

	// ::comment when __CORE__
	private boolean isAbsolute(String nameOrPath) {
		final SFile f = new SFile(nameOrPath);
		return f.isAbsolute();
	}

	public void reset() {
		setCurrentDir(new SFile("."));
	}

}