net.sourceforge.plantuml.FileSystem Maven / Gradle / Ivy

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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
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 * |      PlantUML : a free UML diagram generator
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 * (C) Copyright 2009-2024, Arnaud Roques
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 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this BSD license.
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 * by the very same license.
 *
 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
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("."));
	}

}