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package edu.wpi.first.smartdashboard;
import java.io.*;
import javax.swing.*;
import edu.wpi.first.smartdashboard.gui.*;
import edu.wpi.first.smartdashboard.robot.*;
import edu.wpi.first.wpilibj.tables.*;
/**
* Logs all information received to a CSV file.
*
* @author pmalmsten
*/
public class LogToCSV implements ITableListener {
private static final String s_lineSeparator = System.getProperty("line.separator");
private long m_startTime;
private FileWriter m_fw;
private final DashboardFrame frame;
public LogToCSV(DashboardFrame frame) {
this.frame = frame;
}
/*
* Prepares this LogToCSV object to begin writing to the specified file. The
* specified file is opened in write mode (any existing content is blown
* away).
*
* @param path The path of the CSV file to write to.
*/
public void start(String path) {
if (m_fw == null) {
try {
m_startTime = System.currentTimeMillis();
m_fw = new FileWriter(path);
m_fw.write("Time (ms),Name,Value" + s_lineSeparator);
m_fw.flush();
Robot.getTable().addTableListener(this, true);
} catch (IOException ex) {
ex.printStackTrace();
JOptionPane.showMessageDialog(null, "An error occurred when attempting to " + "open the output CSV file for writing. "
+ "Please check the file path preference.", "Unable to Open CSV File", JOptionPane.ERROR_MESSAGE);
frame.getPrefs().logToCSV.setValue(false);
}
}
}
/*
* If logging was previously enabled, this method flushes and releases the
* file handle to the CSV file. Logging will no longer occur.
*/
public void stop() {
if (m_fw == null) {
return;
}
try {
m_fw.close();
} catch (IOException ex) {
ex.printStackTrace();
}
Robot.getTable().removeTableListener(this);
m_fw = null;
}
@Override
public void valueChanged(ITable source, String key, Object value, boolean isNew) {
if (!(value instanceof ITable) && m_fw != null) {
try {
long timeStamp = System.currentTimeMillis() - m_startTime;
m_fw.write(timeStamp + "," + "\"" + key + "\"," + "\"" + value + "\"" + s_lineSeparator);
m_fw.flush();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}
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