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139 lines
4.0 KiB
Java
139 lines
4.0 KiB
Java
package com.verictas.pos.simulator.dataWriter;
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import com.verictas.pos.simulator.SimulatorConfig;
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import java.io.File;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.text.*;
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import java.util.Date;
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public class DataWriter {
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protected FileWriter writer = null;
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/**
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* Set global variables, such as the delimiter and the new line character
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*/
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protected static final String DELIMITER = "\t";
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protected static final String NEW_LINE = "\n";
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protected int counter = 0;
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/**
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* Decimal formatter
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*/
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public DecimalFormat formatter = new DecimalFormat();
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/**
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* Constructor
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* @throws WritingException
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*/
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public DataWriter(String filenameAppendix) throws WritingException {
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/**
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* Prepare the locale
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*/
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try {
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/**
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* Define the save path
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*/
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String directory = System.getProperty("user.home") + File.separator + "simulatorExports";
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File directoryPath = new File(directory);
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String path = directory + File.separator + getCurrentTimeStamp() + "-" + filenameAppendix + ".txt";
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System.out.println("WRITING DATA TO: " + path);
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/**
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* Check if the saving directory exists to prevent IOException
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*/
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if (!directoryPath.exists()) {
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directoryPath.mkdirs();
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}
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/**
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* Open a file to write to and write the header
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*/
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this.writer = new FileWriter(path);
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/**
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* Configure the decimal formatter
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*/
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DecimalFormatSymbols symbols = new DecimalFormatSymbols();
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if (SimulatorConfig.outputNumbers == 0) {
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symbols.setDecimalSeparator(',');
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symbols.setGroupingSeparator('.');
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} else {
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symbols.setDecimalSeparator('.');
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symbols.setGroupingSeparator(',');
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}
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this.formatter.setDecimalFormatSymbols(symbols);
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this.formatter.setMinimumFractionDigits(0);
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this.formatter.setMaximumFractionDigits(25);
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} catch(IOException e) {
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throw new WritingException("The destination file couldn't be created.");
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} catch(Exception e) {
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throw new WritingException("Some unknown error occurred while writing to the file!");
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}
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}
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/**
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* Writes a string to the file
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* @param string
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* @throws WritingException
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*/
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public void write(String string) throws WritingException {
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if (this.writer == null) {
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throw new WritingException("The writer isn't defined yet");
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} else {
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try {
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if (this.counter % SimulatorConfig.skipLines == 0) {
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this.writer.append(string);
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}
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this.counter++;
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} catch (Exception e) {
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e.printStackTrace();
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throw new WritingException("An error occurred while writing to the file!");
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}
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}
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}
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protected String decimalFormatter(double input) {
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return this.formatter.format(input);
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}
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/**
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* Saves the file to disk
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* @throws WritingException
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*/
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public void save() throws WritingException {
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if (this.writer == null) {
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throw new WritingException("The writer isn't defined yet");
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} else {
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try {
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this.writer.flush();
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this.writer.close();
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} catch (IOException e) {
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throw new WritingException("Whoop! Save error!");
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}
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}
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}
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/**
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* Gets the current line count
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* @return int
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*/
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public int getLines() {
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return this.counter;
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}
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/**
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* Gets the current filestamp for file naming
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* @return String
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*/
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private String getCurrentTimeStamp() {
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return new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss").format(new Date());
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}
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}
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