Logcat.java

/*
 * Copyright (C) 2014 AChep@xda <artemchep@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */
package com.achep.base.utils.logcat;

import android.support.annotation.Nullable;

import com.achep.base.utils.IOUtils;
import com.stericson.RootTools.RootTools;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * @author Artem Chepurnoy
 */
public class Logcat {

    /**
     * Captures the application logcat.
     */
    @Nullable
    public static String capture() {
        final String[] command;
        if (RootTools.isAccessGiven()) {
            command = new String[]{"su", "logcat", "-v", "threadtime", "-d"};
        } else command = new String[]{"logcat", "-v", "threadtime", "-d"};

        BufferedReader br = null;
        try {
            Process process = Runtime.getRuntime().exec(command);
            br = new BufferedReader(new InputStreamReader(process.getInputStream()));
            return IOUtils.readTextFromBufferedReader(br);
        } catch (IOException e) {
            return null;
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) { /* unlucky */ }
            }
        }
    }
}