mirror of
https://github.com/playmusicexporter/playmusicexporter
synced 2024-06-10 09:00:02 +00:00
324 lines
9.5 KiB
Java
324 lines
9.5 KiB
Java
/*
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* Copyright (c) 2015 David Schulte
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package de.arcus.playmusiclib.utils;
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import android.os.Environment;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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/**
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* Help function for files
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*/
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public class FileTools {
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/**
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* Private constructor
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*/
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private FileTools() {
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}
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/**
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* Creates a directory if it not exists
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*
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* @param dir Directory path
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* @return Returns true if the directory was created or already exists
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*/
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public static boolean directoryCreate(String dir) {
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File fileDirectory = new File(dir);
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try {
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if (!fileDirectory.exists()) {
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// Creates the directory
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if (fileDirectory.mkdirs())
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return true;
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} else {
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// Directory exists
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return true;
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}
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} catch (Exception e) {
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// Failed
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// todo: Add logging
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}
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return false;
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}
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/**
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* Checks if the directory exists
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*
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* @param dir Path of the file
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* @return Return whether the directory exists
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*/
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public static boolean directoryExists(String dir) {
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File tmp = new File(dir);
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// Checks whether the directory exists and whether it is a directory
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return (tmp.isDirectory() && tmp.exists());
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}
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/**
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* Creates an empty file
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*
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* @param file File path
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* @return Returns true if the file was successfully created
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*/
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public static boolean fileCreate(String file) {
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try {
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// Create the file
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return (new File(file)).createNewFile();
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} catch (IOException e) {
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return false;
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}
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}
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/**
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* Moves a file
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*
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* @param src Soruce path
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* @param dest Destination path
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* @return Return whether the moving was successful
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*/
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public static boolean fileMove(String src, String dest) {
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File fileSrc = new File(src);
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File fileDest = new File(dest);
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// Move the file
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return fileSrc.renameTo(fileDest);
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}
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/**
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* Copies a stream
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*
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* @param inputStream Source stream
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* @param outputStream Destination stream
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* @return Return whether the stream was copied successful
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*/
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public static boolean fileCopy(InputStream inputStream, OutputStream outputStream) {
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// The buffer size
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final int BUFFER_SIZE = 1024;
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// Will be set on true if the file was copied correctly
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boolean success;
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try {
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// The copy buffer
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byte[] buffer = new byte[BUFFER_SIZE];
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int length;
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// Copy block by block
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while ((length = inputStream.read(buffer)) > 0) {
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outputStream.write(buffer, 0, length);
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}
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// Copy was successful
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success = true;
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} catch (IOException ex) {
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// Failed
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// todo: Add logging
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success = false;
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}
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return success;
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}
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/**
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* Copies a file
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*
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* @param src Source path
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* @param dest Destination path
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* @return Return whether the file was copied successful
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*/
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public static boolean fileCopy(String src, String dest) {
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// Will be set on true if the file was copied correctly
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boolean success;
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InputStream inputStream = null;
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OutputStream outputStream = null;
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try {
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// Open the file streams
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inputStream = new FileInputStream(src);
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outputStream = new FileOutputStream(dest);
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success = fileCopy(inputStream, outputStream);
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} catch (IOException ex) {
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// Failed
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// todo: Add logging
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success = false;
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}
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try {
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// Close all streams
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if (inputStream != null)
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inputStream.close();
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if (outputStream != null)
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outputStream.close();
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} catch (IOException ex) {
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// Failed
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// todo: Add logging
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success = false;
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}
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return success;
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}
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/**
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* Deletes a file
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*
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* @param file Path of the file
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* @return Returns whether the deleting was successful
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*/
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public static boolean fileDelete(String file) {
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// Delete the file
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return (new File(file)).delete();
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}
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/**
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* Checks if the file exists
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*
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* @param file Path of the file
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* @return Return whether the file exists
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*/
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public static boolean fileExists(String file) {
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File tmp = new File(file);
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// Checks whether the file exists and whether it is a file
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return (tmp.isFile() && tmp.exists());
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}
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/**
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* Checks whether the file or directory is a link
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*
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* @param path Path of the file / directory
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* @return Returns whether the file or directory is a link
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*/
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public static boolean pathIsSymbolicLink(String path) {
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File file = new File(path);
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try {
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// Checks whether the file / directory is a symbolic link
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return (file.getAbsolutePath().equals(file.getCanonicalPath()));
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} catch (IOException e) {
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e.printStackTrace();
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}
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return false;
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}
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/**
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* Gets the root canonical file of a symbolic link
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*
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* @param path The path
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* @return The root file
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*/
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public static File getRootCanonicalFile(String path) {
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return getRootCanonicalFile(new File(path));
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}
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/**
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* Gets the root canonical file of a symbolic link
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*
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* @param file The file
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* @return The root file
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*/
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public static File getRootCanonicalFile(File file) {
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try {
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// Gets the canonical file
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File canonicalFile = file.getCanonicalFile();
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// Differences between the canonical and the absolute file
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while (!file.getAbsolutePath().equals(canonicalFile.getAbsolutePath())) {
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file = canonicalFile;
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// Go deeper
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canonicalFile = file.getCanonicalFile();
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}
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} catch (IOException e) {
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// Failed
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// todo: Add logging
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e.printStackTrace();
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}
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return file;
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}
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/**
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* Gets all storages; eg. all sdcards
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*
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* @return List of all storages
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*/
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public static String[] getStorages() {
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List<String> storages = new ArrayList<>();
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// Hard coded mount points
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final String[] mountPointBlacklist = new String[]{"/mnt/tmp", "/mnt/factory", "/mnt/obb", "/mnt/asec", "/mnt/secure", "/mnt/media_rw", "/mnt/shell", "/storage/emulated"};
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final String[] mountPointDirectories = new String[]{"/mnt", "/storage"};
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final String[] mountPoints = new String[]{Environment.getExternalStorageDirectory().getAbsolutePath(), "/external_sd"};
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// Adds all mount point directories
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for (String mountPointDirectory : mountPointDirectories) {
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// Checks all subdirectories
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File dir = getRootCanonicalFile(mountPointDirectory);
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if (dir.exists() && dir.isDirectory()) {
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File[] files = dir.listFiles();
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if (files != null) {
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for (File subDir : files) {
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subDir = getRootCanonicalFile(subDir);
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// Is directory
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if (subDir.isDirectory() && subDir.canRead()) {
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// Add mount point to list
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if (!storages.contains(subDir.getAbsolutePath()))
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storages.add(subDir.getAbsolutePath());
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}
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}
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}
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}
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}
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// Adds all direct mount points
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for (String mountPoint : mountPoints) {
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File file = getRootCanonicalFile(mountPoint);
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if (file.isDirectory() && file.canRead()) {
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if (!storages.contains(file.getAbsolutePath()))
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storages.add(file.getAbsolutePath());
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}
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}
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// Remove all blacklisted paths
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storages.removeAll(Arrays.asList(mountPointBlacklist));
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// Sort the list
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Collections.sort(storages);
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// Returns the array
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return storages.toArray(new String[storages.size()]);
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}
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}
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