Android Open Source - JS-log Log Extractor

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * Copyright 2011 Zoee Silcock (zoeetrope.com)
 * // w w  w . j a v a 2 s. c o  m
 * This file is part of JSLog.
 * 
 * JSLog 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 3 of the License, or
 * (at your option) any later version.
 * 
 * JSLog 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 JSLog.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.zoeetrope.jslog;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class LogExtractor implements Runnable {
  
  private NotificationService service;
  private int id = 0;
  private boolean running;
  
  public LogExtractor(NotificationService service) {
    this.service = service;
  }
  
  @Override
  public void run() {
    if(running) {
      extractFromLog();
    }
  }
  
  public void start() {
    try {
      // Clear the logcat so we don't display any old entries.
      Process p = Runtime.getRuntime().exec("logcat -c");
      p.waitFor();
    } catch (IOException e) {
      e.printStackTrace();
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
    
    this.running = true;
  }
  
  public void stop() {
    this.running = false;
  }
  
  private void extractFromLog() {
    String line = "";
    String location = "";

    try {
      // Exctract any new entries from the logcat.
      Process process = Runtime.getRuntime().exec("logcat -d browser:V *:S");
      BufferedReader bufferedReader = new BufferedReader(
          new InputStreamReader(process.getInputStream()), 8192);
      process.waitFor();
      
            while ((line = bufferedReader.readLine()) != null){
              // This regex splits the line up into it's component parts.
              Pattern pattern = Pattern.compile("./browser \\(.*\\): Console: (.*) (http.*|):(.*)");
              Matcher matcher = pattern.matcher(line);
              int icon = R.drawable.info;
              
              if(line.charAt(0) != '-' && matcher.find()) {
                // Determine which icon to display with the notification.
                if(line.charAt(0) == 'E') {
                icon = R.drawable.error;
              } else if(line.charAt(0) == 'W') {
                icon = R.drawable.warning;
              }
                
                // Build the JSLogItem with the data extracted from the line.
                location = service.getText(R.string.line_prefix).toString() + " ";
                if(matcher.group(2).length() > 0) {
                  location += matcher.group(3) + " " +
                    service.getText(R.string.line_of).toString() + " " +
                    matcher.group(2);
                } else {
                  location += service.getText(R.string.line_unknown).toString();
                }
                JSLogItem item = new JSLogItem(this.id, icon, matcher.group(1), location);
                service.displayItem(item);
              
              this.id++;
            }
            }
            
            // Clear the extracted entries from the list.
      process = Runtime.getRuntime().exec("logcat -c");
      process.waitFor();
    } catch (IOException e) {
      e.printStackTrace();
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
  }

}

Java Source Code List

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