org.eclipse.xtext.idea.resource.VirtualFileURIUtil.java Source code

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Here is the source code for org.eclipse.xtext.idea.resource.VirtualFileURIUtil.java

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/**
 * Copyright (c) 2015 itemis AG (http://www.itemis.eu) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.eclipse.xtext.idea.resource;

import com.google.common.base.Objects;
import com.intellij.openapi.vfs.VfsUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileManager;
import org.eclipse.emf.common.util.URI;
import org.eclipse.xtext.xbase.lib.Exceptions;

/**
 * Utilities to bridge URIs and VirtualFiles
 */
@SuppressWarnings("all")
public class VirtualFileURIUtil {
    /**
     * @return an EMF URI for a virtual file
     */
    public static URI getURI(final VirtualFile file) {
        boolean _isDirectory = file.isDirectory();
        if (_isDirectory) {
            String _url = file.getUrl();
            String _plus = (_url + "/");
            return URI.createURI(_plus);
        }
        String _url_1 = file.getUrl();
        return URI.createURI(_url_1);
    }

    /**
     * Returns a VirtualFile for the given EMF URI, or <code>null</code> if no VirtualFile exists.
     * Note that a non-existing VirtualFile could be returned as well.
     * 
     * @return a VirtualFile for the given EMF URI, or <code>null</code> if no VirtualFile exists.
     */
    public static VirtualFile getVirtualFile(final URI uri) {
        String _string = uri.toString();
        final String url = VfsUtil.fixURLforIDEA(_string);
        VirtualFileManager _instance = VirtualFileManager.getInstance();
        return _instance.findFileByUrl(url);
    }

    /**
     * Will return a VirtualFile and create one if it doesn't already exist.
     * This method will also create all parent folders when needed.
     */
    public static VirtualFile getOrCreateVirtualFile(final URI uri) {
        return VirtualFileURIUtil.getOrCreateFile(uri, false);
    }

    private static VirtualFile getOrCreateFile(final URI uri, final boolean isDirectory) {
        try {
            final VirtualFile file = VirtualFileURIUtil.getVirtualFile(uri);
            boolean _notEquals = (!Objects.equal(file, null));
            if (_notEquals) {
                return file;
            }
            int _segmentCount = uri.segmentCount();
            boolean _equals = (_segmentCount == 0);
            if (_equals) {
                throw new IllegalStateException(("couldn\'t find virtual file for " + uri));
            }
            URI _trimSegments = uri.trimSegments(1);
            final VirtualFile parent = VirtualFileURIUtil.getOrCreateFile(_trimSegments, true);
            if (isDirectory) {
                String _lastSegment = uri.lastSegment();
                return VfsUtil.createDirectoryIfMissing(parent, _lastSegment);
            } else {
                String _lastSegment_1 = uri.lastSegment();
                return parent.findOrCreateChildData(uri, _lastSegment_1);
            }
        } catch (Throwable _e) {
            throw Exceptions.sneakyThrow(_e);
        }
    }
}