com.intellij.ide.actions.PruneEmptyDirectoriesAction.java Source code

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Here is the source code for com.intellij.ide.actions.PruneEmptyDirectoriesAction.java

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/*
 * Copyright 2000-2012 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * @author max
 */
package com.intellij.ide.actions;

import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.fileTypes.FileTypeManager;
import com.intellij.openapi.ui.Messages;
import com.intellij.openapi.vfs.VfsUtilCore;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileVisitor;
import org.jetbrains.annotations.NotNull;

import java.io.IOException;

public class PruneEmptyDirectoriesAction extends AnAction {
    @Override
    public void update(AnActionEvent e) {
        VirtualFile[] files = PlatformDataKeys.VIRTUAL_FILE_ARRAY.getData(e.getDataContext());
        e.getPresentation().setEnabled(files != null && files.length > 0);
    }

    @Override
    public void actionPerformed(AnActionEvent e) {
        VirtualFile[] files = PlatformDataKeys.VIRTUAL_FILE_ARRAY.getData(e.getDataContext());
        assert files != null;

        FileTypeManager ftManager = FileTypeManager.getInstance();
        try {
            for (VirtualFile file : files) {
                pruneEmptiesIn(file, ftManager);
            }
        } catch (IOException ignored) {
        }
    }

    private static void pruneEmptiesIn(VirtualFile file, final FileTypeManager ftManager) throws IOException {
        VfsUtilCore.visitChildrenRecursively(file, new VirtualFileVisitor() {
            @Override
            public boolean visitFile(@NotNull VirtualFile file) {
                if (file.isDirectory()) {
                    if (ftManager.isFileIgnored(file)) {
                        return false;
                    }
                } else {
                    if (".DS_Store".equals(file.getName())) {
                        delete(file);
                        return false;
                    }
                }
                return true;
            }

            @Override
            public void afterChildrenVisited(@NotNull VirtualFile file) {
                if (file.isDirectory() && file.getChildren().length == 0) {
                    delete(file);
                }
            }
        });
    }

    private static void delete(final VirtualFile file) {
        ApplicationManager.getApplication().runWriteAction(new Runnable() {
            public void run() {
                try {
                    file.delete(PruneEmptyDirectoriesAction.class);
                    //noinspection UseOfSystemOutOrSystemErr
                    System.out.println("Deleted: " + file.getPresentableUrl());
                } catch (IOException e) {
                    Messages.showErrorDialog(
                            "Cannot delete '" + file.getPresentableUrl() + "', " + e.getLocalizedMessage(),
                            "IOException");
                }
            }
        });
    }
}