net.erdfelt.android.sdkfido.project.Dir.java Source code

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Here is the source code for net.erdfelt.android.sdkfido.project.Dir.java

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/*******************************************************************************
 *    Copyright 2012 - Joakim Erdfelt
 *
 *    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.
 *******************************************************************************/
package net.erdfelt.android.sdkfido.project;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Pattern;

import net.erdfelt.android.sdkfido.FetchException;
import net.erdfelt.android.sdkfido.util.PathUtil;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;

public class Dir {
    private File basedir;

    public Dir(File dir) {
        this.basedir = dir;
    }

    public Dir(File dir, CharSequence name) {
        this(new File(dir, name.toString()));
    }

    public File getPath() {
        return this.basedir;
    }

    public File getFile(String path) {
        return new File(this.basedir, FilenameUtils.separatorsToSystem(path));
    }

    public void delete(String path) throws IOException {
        File file = getFile(path);
        if (!file.exists()) {
            return; // Nothing to delete.
        }
        FileUtils.forceDelete(file);
    }

    public Dir getSubDir(String path) {
        return new Dir(new File(this.basedir, FilenameUtils.separatorsToSystem(path)));
    }

    public void ensureEmpty() throws FetchException {
        try {
            if (basedir.exists()) {
                FileUtils.cleanDirectory(basedir);
            } else {
                FileUtils.forceMkdir(basedir);
            }
        } catch (IOException e) {
            throw new FetchException("Unable to ensure directory is empty: " + basedir, e);
        }
    }

    public void ensureExists() throws FetchException {
        if (basedir.exists()) {
            return;
        }
        try {
            FileUtils.forceMkdir(basedir);
        } catch (IOException e) {
            throw new FetchException("Unable to ensure directory exists: " + basedir, e);
        }
    }

    public List<String> findFilePaths(String filenameRegex) {
        List<String> paths = new ArrayList<String>();
        Pattern pat = Pattern.compile(filenameRegex);
        recurseFilePaths(paths, this.basedir, pat);
        Collections.sort(paths);
        return paths;
    }

    private void recurseFilePaths(List<String> paths, File dir, Pattern filenamePattern) {
        for (File path : dir.listFiles()) {
            if (path.isDirectory()) {
                recurseFilePaths(paths, path, filenamePattern);
            } else if (path.isFile()) {
                if (filenamePattern.matcher(path.getName()).matches()) {
                    paths.add(PathUtil.toRelativePath(basedir, path));
                }
            }
        }
    }

    public String getRelativePath(Dir otherDir) {
        return getRelativePath(otherDir.getPath());
    }

    public String getRelativePath(File otherPath) {
        return PathUtil.toRelativePath(basedir, otherPath);
    }
}