mirror of https://github.com/octoleo/plantuml.git
118 lines
3.2 KiB
Java
118 lines
3.2 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2013, Arnaud Roques
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*
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* Project Info: http://plantuml.sourceforge.net
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
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* in the United States and other countries.]
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*
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* Original Author: Arnaud Roques
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*
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* Revision $Revision: 9786 $
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*
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*/
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package net.sourceforge.plantuml;
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import java.io.File;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.StringTokenizer;
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public class FileSystem {
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private final static FileSystem singleton = new FileSystem();
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private final ThreadLocal<File> currentDir = new ThreadLocal<File>();
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private FileSystem() {
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reset();
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}
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public static FileSystem getInstance() {
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return singleton;
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}
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public void setCurrentDir(File dir) {
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if (dir == null) {
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throw new IllegalArgumentException();
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}
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Log.info("Setting current dir: " + dir);
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this.currentDir.set(dir);
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}
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public File getCurrentDir() {
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return this.currentDir.get();
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}
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public File getFile(String nameOrPath) throws IOException {
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final File dir = currentDir.get();
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if (dir == null || isAbsolute(nameOrPath)) {
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return new File(nameOrPath).getCanonicalFile();
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}
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final File filecurrent = new File(dir.getAbsoluteFile(), nameOrPath);
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if (filecurrent.exists()) {
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return filecurrent.getCanonicalFile();
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}
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for (File d : getPath("plantuml.include.path")) {
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final File file = new File(d, nameOrPath);
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if (file.exists()) {
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return file.getCanonicalFile();
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}
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}
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for (File d : getPath("java.class.path")) {
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final File file = new File(d, nameOrPath);
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if (file.exists()) {
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return file.getCanonicalFile();
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}
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}
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return filecurrent;
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}
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private List<File> getPath(String prop) {
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final List<File> result = new ArrayList<File>();
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final String paths = System.getProperty(prop);
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if (paths == null) {
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return result;
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}
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final StringTokenizer st = new StringTokenizer(paths, System.getProperty("path.separator"));
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while (st.hasMoreTokens()) {
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final File f = new File(st.nextToken());
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if (f.exists() && f.isDirectory()) {
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result.add(f);
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}
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}
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return result;
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}
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private boolean isAbsolute(String nameOrPath) {
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final File f = new File(nameOrPath);
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return f.isAbsolute();
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}
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public void reset() {
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setCurrentDir(new File("."));
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}
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}
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