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path: root/CrespoParts/src/com/cyanogenmod/CrespoParts/Utils.java
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package com.cyanogenmod.CrespoParts;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;

import android.util.Log;

public class Utils {
    private static final String TAG = "CrespoParts_Utils";

    /**
     * Write a string value to the specified file.
     * @param filename      The filename
     * @param value         The value
     */
    public static void writeValue(String filename, String value) {
        try {
            FileOutputStream fos = new FileOutputStream(new File(filename));
            fos.write(value.getBytes());
            fos.flush();
            fos.getFD().sync();
            fos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * Write a string value to the specified file.
     * @param filename      The filename
     * @param value         The value
     */
    public static void writeValue(String filename, Boolean value) {
        try {
                String sEnvia;
            FileOutputStream fos = new FileOutputStream(new File(filename));
            if(value)
                sEnvia = "1";
            else
                sEnvia = "0";
            fos.write(sEnvia.getBytes());
            fos.flush();
            fos.getFD().sync();
            fos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * Write the "color value" to the specified file. The value is scaled from
     * an integer to an unsigned integer by multiplying by 2.
     * @param filename      The filename
     * @param value         The value of max value Integer.MAX
     */
    public static void writeColor(String filename, int value) {
        writeValue(filename, String.valueOf((long) value * 2));
    }

    /**
     * Check if the specified file exists.
     * @param filename      The filename
     * @return              Whether the file exists or not
     */
    public static boolean fileExists(String filename) {
        return new File(filename).exists();
    }

    // Read value from sysfs interface
    public static String readOneLine(String sFile) {
        BufferedReader brBuffer;
        String sLine = null;

        try {
                brBuffer = new BufferedReader(new FileReader(sFile), 512);
            try {
                sLine = brBuffer.readLine();
            } finally {
                brBuffer.close();
            }
        } catch (Exception e) {
            Log.e(TAG, "IO Exception when reading /sys/ file", e);
        }
        return sLine;
    }
}