com.crashnote.core.util.FileUtil.jav Maven / Gradle / Ivy

Go to download
///**
// * Copyright (C) 2011 - 101loops.com 
// *
// * 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 com.crashnote.core.util;
//
//import com.crashnote.core.model.data.DataObject;
//
//import java.io.*;
//import java.util.Date;
//
///**
// * Utility class to execute basic file system operations like reading and writing
// */
//public class FileUtil2 {
//
//    // INTERFACE ==================================================================================
//
//    public String newChronoRandName() {
//        return (new Date().getTime()) + "-" + Math.round(Math.random() * 100);
//    }
//
//    public File checked(final String path) {
//        final File fileRef = new File(path);
//        return fileRef.exists() ? fileRef : null;
//    }
//
//    public File getOrCreate(final File f) {
//        if (!f.exists()) f.mkdirs();
//        return f;
//    }
//
//    public boolean isValid(final File f) {
//        return f.exists() || f.mkdir();
//    }
//
//    public boolean delete(final File f) {
//        return f.delete();
//    }
//
//    // ======== PATH
//
//    public static File getTmpFolder() {
//        return new File(getTmpFolderPath());
//    }
//
//    public static String getTmpFolderPath() {
//        return makeFolderPath(System.getProperty("java.io.tmpdir"));
//    }
//
//    private static String makeFolderPath(final String path) {
//        if (!(path.endsWith("/") || path.endsWith("\\")))
//            return path + System.getProperty("file.separator");
//        else
//            return path;
//    }
//
//    // ======== LISTING
//
//    /**
//     * Return a list of absolute file paths inside a directory -
//     * the result can be null if file is not a directory!
//     */
//    public String[] listFiles(final File dir) {
//        return dir.list();
//    }
//
//    public int countFiles(final File dir) {
//        final String[] files = listFiles(dir);
//        return (files != null) ? files.length : 0;
//    }
//
//    // ======== READ / WRITE
//
//    public void writeToFile(final String path, final String data) throws IOException {
//        writeToFile(new File(path), data);
//    }
//
//    public void writeToFile(final File file, final String data) throws IOException {
//        streamToFile(new FileOutputStream(file), data);
//    }
//
//    public void writeToFile(final String path, final DataObject data) throws IOException {
//        writeToFile(new File(path), data);
//    }
//
//    public void writeToFile(final File file, final DataObject data) throws IOException {
//        streamToFile(new FileOutputStream(file), data);
//    }
//
//    public String readFromFile(final String path) throws IOException {
//        return readFromFile(new File(path));
//    }
//
//    public String readFromFile(final File file) throws IOException {
//        return readFromFile(new FileInputStream(file));
//    }
//
//    // INTERNALS ==================================================================================
//
//    // ======== STREAMING
//
//    private String readFromFile(final InputStream stream) throws IOException {
//        Reader reader = null;
//        final StringBuilder sb = new StringBuilder();
//
//        try {
//            reader = new BufferedReader(new InputStreamReader(stream));
//
//            int len;
//            final char[] chars = new char[4096];
//            while ((len = reader.read(chars)) >= 0) {
//                sb.append(chars, 0, len);
//            }
//        } finally {
//            try {
//                if (reader != null)
//                    reader.close();
//            } catch (IOException ignored) {
//            }
//        }
//
//        return sb.toString();
//    }
//
//    private void streamToFile(final OutputStream output, final String data) throws IOException {
//        Writer writer = null;
//        try {
//            writer = new BufferedWriter(new OutputStreamWriter(output));
//            writer.write(data);
//        } finally {
//            if (output != null) try {
//                output.close();
//            } catch (Exception ignore) {
//            }
//            if (writer != null) try {
//                writer.flush();
//                writer.close();
//            } catch (Exception ignore) {
//            }
//        }
//    }
//
//    private void streamToFile(final OutputStream stream, final DataObject data) throws IOException {
//        Writer writer = null;
//        try {
//            writer = new BufferedWriter(new OutputStreamWriter(stream));
//            data.streamTo(writer);
//            writer.flush();
//        } finally {
//            try {
//                if (writer != null) {
//                    writer.close();
//                }
//            } catch (Exception ignored) {
//            }
//        }
//    }
//}