Android Open Source - ShareManager File Handler

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Back to project page ShareManager.

License

The source code is released under:

Copyright (c) 2013, Nelspike All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Red...

Java Source Code

package share.manager.utils;
// w w  w.j ava2 s .  co m
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;

import android.os.Environment;

public class FileHandler {

  private static final String filename = "portfolio.txt",
      directoryName = "ShareManager", temporaryName = "port2.txt";
  private static File directory = null;

  public static ArrayList<String> readFile() {
    String scan;
    ArrayList<String> ret = new ArrayList<String>();
    directory = getAlbumStorageDir(directoryName);
    File file = new File(directory, filename);

    if (!file.exists()) {
      try {
        file.createNewFile();
      }
      catch (IOException e) {

      }
    }

    FileReader fileReader = null;
    try {
      fileReader = new FileReader(file);
    }
    catch (FileNotFoundException e) {
      e.printStackTrace();
    }
    BufferedReader br = new BufferedReader(fileReader);

    try {
      while ((scan = br.readLine()) != null)
        ret.add(scan);
    }
    catch (IOException e) {
      e.printStackTrace();
    }

    try {
      br.close();
    }
    catch (IOException e) {
      e.printStackTrace();
    }

    return ret;
  }

  public static void writeToFile(String coded) {
    FileWriter out = null;
    File file = new File(directory, filename);
    coded += "\n";
    try {
      out = new FileWriter(file, true);
      out.write(coded);
      out.close();
    }
    catch (IOException e) {
      e.printStackTrace();
    }
  }

  public static String[] getNames() {
    ArrayList<String> info = readFile(), names = new ArrayList<String>();
    for (String s : info)
      names.add(s.split("\\|")[0]);
    String[] ret = new String[names.size()];
    return names.toArray(ret);
  }

  public static ArrayList<String> getNamesString() {
    ArrayList<String> info = readFile(), names = new ArrayList<String>();
    for (String s : info)
      names.add(s.split("\\|")[0]);
    return names;
  }

  public static String[] getRegions() {
    ArrayList<String> info = readFile(), names = new ArrayList<String>();
    for (String s : info)
      names.add(s.split("\\|")[2]);
    String[] ret = new String[names.size()];
    return names.toArray(ret);
  }

  public static String[] getShares() {
    ArrayList<String> info = readFile(), names = new ArrayList<String>();
    for (String s : info)
      names.add(s.split("\\|")[3]);
    String[] ret = new String[names.size()];
    return names.toArray(ret);
  }

  public static String[] getTicks() {
    ArrayList<String> info = readFile(), names = new ArrayList<String>();
    for (String s : info)
      names.add(s.split("\\|")[1]);
    String[] ret = new String[names.size()];
    return names.toArray(ret);
  }

  public static ArrayList<Float> getNumeratedShares() {
    ArrayList<String> info = readFile();
    ArrayList<Float> numShares = new ArrayList<Float>();
    for (String s : info)
      numShares.add(Float.parseFloat(s.split("\\|")[3]));
    return numShares;
  }

  public static ArrayList<Integer> getSharePercentages() {
    ArrayList<String> info = readFile();
    ArrayList<Integer> totals = new ArrayList<Integer>();
    float total = getSharesSum();

    for (String s : info)
      totals
          .add(Math.round((Float.parseFloat(s.split("\\|")[3]) / total) * 100));

    return totals;
  }

  public static void changeShare(String tick, boolean operation) {
    ArrayList<String> info = readFile();
    FileWriter out = null;
    File file = new File(directory, temporaryName);
    File oldFile = new File(directory, filename);

    try {
      out = new FileWriter(file, true);
      for (String s : info) {
        String[] split = s.split("\\|");
        if (split[1].equals(tick)) {
          int newShares = operation ? Integer.parseInt(split[3]) + 1 : Integer
              .parseInt(split[3]) - 1;
          out.write(split[0] + "|" + split[1] + "|" + split[2] + "|"
              + newShares + "\n");
        }
        else out.write(s + "\n");
      }
      out.close();
    }
    catch (IOException e) {
      e.printStackTrace();
    }

    oldFile.delete();
    file.renameTo(oldFile);
  }

  public static String getTickFromName(String name) {
    ArrayList<String> info = readFile();
    String ret = "";

    for (String s : info) {
      String[] infoSplit = s.split("\\|");
      if (infoSplit[0].equals(name)) {
        ret = infoSplit[1];
        break;
      }
    }

    return ret;
  }

  public static String getInfoFromTick(String tick) {
    ArrayList<String> info = readFile();
    String ret = "";

    for (String s : info) {
      String[] infoSplit = s.split("\\|");
      if (infoSplit[1].equals(tick)) {
        ret = s;
        break;
      }
    }

    return ret;
  }

  public static String getSharesFromTick(String tick) {
    ArrayList<String> info = readFile();
    String ret = "";

    for (String s : info) {
      String[] infoSplit = s.split("\\|");
      if (infoSplit[1].equals(tick)) {
        ret = infoSplit[3];
        break;
      }
    }

    return ret;
  }

  private static File getAlbumStorageDir(String filename) {
    File file = new File(
        Environment
            .getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS),
        filename);
    if (!file.mkdirs()) {

    }
    return file;
  }

  private static float getSharesSum() {
    ArrayList<String> info = readFile();
    float ret = 0.0f;
    for (String s : info)
      ret += Float.parseFloat(s.split("\\|")[3]);
    return ret;
  }
}

Java Source Code List

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