Logger

import java.io.File;
import java.io.IOException;
import java.util.Date;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JFileChooser;

import org.apache.pdfbox.contentstream.*;
import org.apache.pdfbox.pdfparser.PDFParser;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.text.PDFTextStripper;

public class Logger {
    public static void main(String[] args) throws IOException
    {
        new Logger();
    }
    public Logger() throws IOException
    {
        //org.apache.pdfbox.contentstream.PDFStreamEngine p;
        //PDFStreamEngine pdcs = new PDFStreamEngine();
        //new PDFParser();
        //Create a file chooser
        final JFileChooser fc = new JFileChooser();
        //In response to a button click:
        File pdfFile;
        if(fc.showOpenDialog(null) == JFileChooser.APPROVE_OPTION)
            pdfFile = fc.getSelectedFile();
        else
            return;

        PDFTextStripper ts = new PDFTextStripper();
        PDDocument d = PDDocument.load(pdfFile);
        System.out.println("There are "+d.getNumberOfPages()+" pages.");
        Pattern pdate, ptime, pmessage, pname;
        Matcher m;
        pdate   = Pattern.compile(
                "(?<month>(January)|(February)|(March)|(April)|(May)|(June)|(July)|(August)|(September)|(October)|(November)|(December))"+
                ".(?<day>\\d+)(\\w+)."+
                ".(?<year>\\d+)"
                );
        ptime    = Pattern.compile(
                "(?<hour>\\d+):(?<minute>\\d+) (?<ampm>am|pm)"
                );
        pmessage = Pattern.compile(
                "(?<message>.+)"
                );
        pname = Pattern.compile(
                "^(?<name>\\w+)$"
                );
        String sDate, sTime, sName, sMessage;
        sDate = sTime = sName = sMessage = "";
        String[] arr = ts.getText(d).split("\n");
        d.close();
        boolean timePatternWasLast = false;
        for(String s : arr)
        //String s = "May 1st, 2016  ";
        //while(true)
        {
            s = s.replace('\u00A0', ' ').replaceAll("\\s", " ").trim();

            /*
            for(char c : s.toCharArray())
                System.out.println(c+"\t"+(int)c);
            */

            if(timePatternWasLast)
            {
                if((m = pname.matcher(s)).find())
                {
                    sName = m.group("name");
                    timePatternWasLast = false;
                    continue;
                }
            }


            if((m = pdate.matcher(s)).find())
            {
                sDate = m.group("month")+" "+m.group("day")+" "+m.group("year");
                timePatternWasLast = false;
            }
            else if((m = ptime.matcher(s)).find())
            {
                sTime = m.group("hour")+":"+m.group("minute")+" "+m.group("ampm");
                timePatternWasLast = true;
            }
            else if((m = pmessage.matcher(s)).find())
            {
                sMessage = m.group("message");
                String id;
                Message mes = new Message(id = getId(sName, sDate+"\t"+sTime, sMessage), sName, sDate+"\t"+sTime, sMessage);
                System.out.println(mes);
                map.put(id, mes);
                timePatternWasLast = false;
            }
        }
    }
    static HashMap<String, Message> map = new HashMap<String, Message>();
    public class Message
    {
        String id;
        String name;
        String date;
        String message;
        public Message(String id_, String name_, String date_, String message_)
        {
            id = id_;
            name = name_;
            date = date_;
            message = message_;
        }
        public String toString()
        {
            return
                    //"id     : ["+id+"]\n"+
                    "name   : ["+name+"]\n"+
                    "date   : ["+date+"]\n"+
                    "message: ["+message+"]\n";
        }
    }
    public static String getId(String n, String d, String m)
    {
        //Unique ID (not guaranteed)
        // NAME : DATE \t TIME : MessageFirstChar MessageLastChar
        return n+":"+d+":"+m;
    }
}