java - 用 Java 解析 Whatsapp 日志文件

Question

我目前正在开发一个小工具来分析 Whatsapp 中群聊的使用情况。

我正在尝试使用 whatsapp 日志文件来实现它。我设法将原始 .txt 格式化为以下格式以处理格式化文本:

29. Jan. 12:01 - Random Name: message text
29. Jan. 12:22 - Random Name: message text
29. Jan. 12:24 - Random Name: message text
29. Jan. 12:38 - Random Name: message text
29. Jan. 12:52 - Random Name: message text

到目前为止，还不错。问题是有一些软盘线，例如:

29. Jan. 08:42 - Random Name2: message text 1
                 additional text of the message 1
29. Jan. 08:43 - Random Name2: message text 2

甚至更糟:

15. Jan. 14:00 - Random Name: First part of the message
                 second part
                 third part
                 forth part
                 fifth part    
29. Jan. 08:43 - Random Name2: message text 2

我想我需要一种算法来解决这个问题，但我是编程新手，无法创建如此复杂的算法。

Python 中同样的问题:parse a whatsApp conversation log

[编辑]

这是我的代码，它不起作用。 (我知道这很糟糕)

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class FormatList {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        FileReader fr = new FileReader("Whatsapp_formated.txt");
        BufferedReader br = new BufferedReader(fr);

        FileWriter fw = new FileWriter("Whatsapp_formated2.txt");
        BufferedWriter ausgabe = new BufferedWriter(fw);

        String line="";
        String buffer="";

        while((line = br.readLine())!=null)
        {
            System.out.println("\n"+line);

            if(line.isEmpty())
            {

            }
            else{
                if(line.charAt(0)=='0'||line.charAt(0)=='1'||line.charAt(0)=='2'||line.charAt(0)=='3'||line.charAt(0)=='4'||line.charAt(0)=='5'||line.charAt(0)=='6'||line.charAt(0)=='7'||line.charAt(0)=='8'||line.charAt(0)=='9')
                {
                    buffer = line;

                }
                else
                {
                    buffer += line;
                }

                 ausgabe.write(buffer);
                 ausgabe.newLine();
                System.out.println(buffer);
            }

            ausgabe.close();

        }




    }

}

[编辑 2]

最后我想读出文件并分析每一行:

29. Jan. 12:01 - Random Name: message text

我可以知道它是什么时候发送的，是谁发送的，他写了什么/写了多少

如果我现在得到以下行:

additional text of the message 1

不知道是什么时候写的，也不知道是谁发的

Answer 1

好吧，我相信，根据我的理解，我想出了一个解决你的问题的方法。

给定一个具有这种格式的文件:

29. Jan. 12:01 - Random Name: message text
29. Jan. 12:22 - Random Name: message text
29. Jan. 12:24 - Random Name: message text
29. Jan. 12:38 - Random Name: message text
29. Jan. 12:52 - Random Name: message text
29. Jan. 08:42 - Random Name2: message text 1
                 additional text of the message 1
29. Jan. 08:43 - Random Name2: message text 2
15. Jan. 14:00 - Random Name: First part of the message
                 second part
                 third part
                 forth part
                 fifth part    
29. Jan. 08:43 - Random Name2: message text 2

(这是我的“data”文件夹中的一个名为“wsp.log”的文件。所以访问它的路径是“data/wsp.log”)

我期待这样的事情:

29. Jan. 12:01 - Random Name: message text
29. Jan. 12:22 - Random Name: message text
29. Jan. 12:24 - Random Name: message text
29. Jan. 12:38 - Random Name: message text
29. Jan. 12:52 - Random Name: message text
29. Jan. 08:42 - Random Name2: message text 1 additional text of the message 1
29. Jan. 08:43 - Random Name2: message text 2
15. Jan. 14:00 - Random Name: First part of the message second part third part forth part fifth part
29. Jan. 08:43 - Random Name2: message text 2

据此，我实现了以下类:

public class LogReader {

    public void processWspLogFile() throws IOException {
        //a. I would reference to my file
        File wspLogFile = new File("data/wsp.log");
        //b. I would use the mechanism to read the file using BufferedReader
        BufferedReader bufferedReader = new BufferedReader(new FileReader(wspLogFile));

        String currLine = null;//This is the current line (like my cursor)

        //This will hold the data of the file in String format
        StringBuilder stringFormatter = new StringBuilder();
        boolean firstIterationDone = false;//The first line will always contains the format, so I will always append it, from the second I will start making the checkings...

        // Now I can use some regex (I'm not really good at this stuff, I just used a Web Page: http://txt2re.com/)
        /* This regex will match the lines that contains the date in this format "29. Jan. 12:22", when I take a look at your file
          I can see that the "additional text of the message" does not contains any date, so I can use that as my point of separation*/
        String regex = "(\\d)(\\d)(\\.)(\\s+)([a-z])([a-z])([a-z])(\\.)(\\s+)(\\d)(\\d)(:)(\\d)(\\d)";
        //As part of using regex, I would like to create a Pattern to make the lines on the list match this expression      
        Pattern wspLogDatePattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE | Pattern.DOTALL);

        //Use of the line separator of the O.S
        String lineSeparator = System.getProperty("line.separator");

        while ((currLine = bufferedReader.readLine()) != null) {

            if (!firstIterationDone) {
                stringFormatter.append(currLine);
                firstIterationDone = true;
            } else {
                Matcher wspLogDateMatcher = wspLogDatePattern.matcher(currLine);    

                //The first time we will check if the second line has the pattern, if it does, we append a line separator
                if (wspLogDateMatcher.find()) {
                    //It is a "normal" line
                    stringFormatter.append(lineSeparator).append(currLine);             
                } else {
                    //But if it doesn't, we append it on the same line
                    stringFormatter.append(" ").append(currLine.trim());
                }
            }
        }
        System.out.println(stringFormatter.toString());
    }
}

我将以这种方式调用:

public static void main(String[] args) throws IOException {
    new LogReader().processWspLogFile();
}

希望这可以给您一些想法或对您的目的有用。我知道需要一些改进，代码总是需要重构 :)，但现在它可以达到预期的格式。编码愉快 :)。