Android Open Source - Music2SD Mount

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License

The source code is released under:

Copyright (c) 2014, Lepidus Development LLC All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions ...

Java Source Code

package com.lepidusdevelopment.music2sd;
/* www . ja v a2  s .  co  m*/
/**
 * Copyright (c) 2014, Lepidus Development LLC
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 *   Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * 
 *   Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.io.File;

import android.annotation.SuppressLint;
import android.content.Context;
import android.os.Build;
import android.os.Environment;
import android.os.StatFs;

public class Mount {
  private final Context _context;
  public String name;
  public File file;
  public int priority;

  // Mount Command Information
  public String device;
  public String mount;
  public String filesystem;
  public String[] options;
  public String mountLine;
  
  // DF Command Information
  public String totalSpace;
  public String usedSpace;
  public String freeSpace;
  public int blockSize;
  
  public Mount(Context context, String mountLine) {
    this._context = context;
    this.mountLine = mountLine;
    
    if (mountLine.contains(" ")) {
      String[] params = mountLine.split(" ");
      
      if (params.length >= 4) {
        // Mount Commands with "on" nomenclature. 
        if (params[1].equalsIgnoreCase("on")) {
          // Mount Commands with "on" and "type" nomenclature.
          if (params[3].equalsIgnoreCase("type") && params.length >= 6) {
            this.device = params[0];
            this.mount = params[2];
            this.filesystem = params[4];
            
            if (params[5].charAt(0) == '(') {
              this.options = params[5].substring(1, params[5].length() - 2).split(",");
            }
            else {
              this.options = params[5].split(",");
            }
          }
          else if (params.length >= 4) {
            this.device = params[0];
            this.mount = params[2];
            this.filesystem = null;
            
            if (params[3].charAt(0) == '(') {
              this.options = params[3].substring(1, params[3].length() - 2).split(",");
            }
            else {
              this.options = params[3].split(",");
            }
          }
        }
        else {
          // Mount command without "on", but with "type" nomenclature. (Not sure if this will ever happen, but heck why not support it.)
          if (params[2].equalsIgnoreCase("type") && params.length >= 5) {
            this.device = params[0];
            this.mount = params[1];
            this.filesystem = params[3];
            
            if (params[4].charAt(0) == '(') {
              this.options = params[4].substring(1, params[4].length() - 2).split(",");
            }
            else {
              this.options = params[4].split(",");
            }
          }
          // Mount command with Filesystem.
          else if (params.length >= 4) {
            this.device = params[0];
            this.mount = params[1];
            this.filesystem = params[2];
            
            if (params[3].charAt(0) == '(') {
              this.options = params[3].substring(1, params[3].length() - 2).split(",");
            }
            else {
              this.options = params[3].split(",");
            }
          }
          // Mount command without Filesystem.
          else if (params.length == 3) {
            this.device = params[0];
            this.mount = params[1];
            this.filesystem = null;
            
            if (params[2].charAt(0) == '(') {
              this.options = params[2].substring(1, params[2].length() - 2).split(",");
            }
            else {
              this.options = params[2].split(",");
            }
          }
        }
      }
    }
  }
  
  @SuppressLint("NewApi")
  @SuppressWarnings("deprecation")
  public boolean getSpaceInformation() {
    try {
      StatFs stats = new StatFs(this.mount);
      
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) { 
        this.totalSpace = (stats.getTotalBytes() / 1073741824) + "GB";
        this.usedSpace = ((stats.getTotalBytes() - stats.getAvailableBytes()) / 1073741824) + "GB";
        this.freeSpace = (stats.getAvailableBytes() / 1073741824) + "GB";
      }
      else {
        long blockCount = stats.getBlockCount();
        long blockSize = stats.getBlockSize();
        long freeBlocks = stats.getFreeBlocks();
        
        this.totalSpace = (blockCount * blockSize / 1073741824) + "GB";
        this.usedSpace = (((blockCount - freeBlocks) * blockSize) / 1073741824) + "GB";
        this.freeSpace = (freeBlocks * blockSize / 1073741824) + "GB";
      }
    }
    catch (Exception e) {
      this.totalSpace = "unk";
      this.usedSpace = "unk";
      this.freeSpace = "unk";      
    }
    
    return true;
  }
    
  public void generateName() {
    // Is it the data partition?
    if (this.mount.equalsIgnoreCase("/data")) {
      this.name = this._context.getResources().getString(R.string.internal);
      this.priority = 1;
      this.file = null;
      return;
    }
    
    String[] device;
    String[] external;
    
    // Is it the built-in device storage?
    String result = System.getenv("EXTERNAL_STORAGE");
    if (result != null && result.contains(":")) {
      device = result.split(":");
    }
    else {
      if (result == null) {
        device = null;
      }
      else {
        device = new String[1];
        device[0] = result;
      }
    }
    
    if (device != null) {
      for (int i = 0; i < device.length; i++) {
        if (device[i].equalsIgnoreCase(this.mount)) {
          // Sometimes even though it's under external it may not be removable thus it's "Device Storage".
          if (Environment.isExternalStorageRemovable()) {
            this.name = this._context.getResources().getString(R.string.external);
            this.priority = 3;
            this.file = new File(this.mount);
            return;
          }
          else {
            this.name = this._context.getResources().getString(R.string.device);
            this.priority = 2;
            this.file = new File(this.mount);
            return;
          }
        }
      }
    }
    
    // Is it a SD Card or secondary storage?
    result = System.getenv("SECONDARY_STORAGE");
    if (result != null && result.contains(":")) {
      external = result.split(":");
    }
    else {
      if (result == null) {
        external = null;
      }
      else {
        external = new String[1];
        external[0] = result;
      }
    }
    
    if (external != null) {
      for (int i = 0; i < external.length; i++) {
        if (external[i].equalsIgnoreCase(this.mount)) {
          this.name = this._context.getResources().getString(R.string.external);
          this.priority = 3;
          this.file = new File(this.mount);
          return;
        }
      }
    }
    
    if (this.mountLine.matches("^(.*)rw(.*)nodev(.*)noexec(.*)$")) {
      this.name = this._context.getResources().getString(R.string.unknown);
      this.priority = 4;
      this.file = new File(this.mount);
      return;
    }
  }
}

Java Source Code List

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