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import javax.swing.filechooser.FileNameExtensionFilter;
import java.io.*;
import java.net.URL;
import java.util.ArrayList;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class FileUtility {
public void deleteFile(String fileName) {
File file = new File(fileName);
if (file.exists()) {
file.delete();
}
}
public void downloadImage(String url, String fileName) throws IOException {
FileOutputStream fos = new FileOutputStream(fileName);
URL urlObj = new URL(url);
InputStream is = urlObj.openStream();
byte[] b = new byte[2048];
int length;
while ((length = is.read(b)) != -1) {
fos.write(b, 0, length);
}
fos.close();
is.close();
}
public void moveFile(String source, String destination) {
File sourceFile = new File(source);
File destinationFile = new File(destination);
sourceFile.renameTo(destinationFile);
System.out.println("Moved file to Completed Folder");
}
public String removeNonAlphaNumeric(String str) {
return str.replaceAll("[^a-zA-Z0-9]", "");
}
public static String showTextFileChooser() {
javax.swing.JFileChooser chooser = new javax.swing.JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter("Text File", "txt", "text");
chooser.setFileFilter(filter);
chooser.setDialogTitle("Select a text file");
chooser.setFileSelectionMode(javax.swing.JFileChooser.FILES_ONLY);
chooser.setAcceptAllFileFilterUsed(false);
if (chooser.showOpenDialog(null) == javax.swing.JFileChooser.APPROVE_OPTION) {
return chooser.getSelectedFile().getAbsolutePath();
} else {
return null;
}
}
public static File findMP3File(String directory){
File dir = new File(directory);
File[] files = dir.listFiles();
for(File file : files){
if(file.getName().endsWith(".mp3")){
return file;
}
}
return null;
}
public static String findJsonFile(String folderName) {
File folder = new File(folderName);
File[] listOfFiles = folder.listFiles();
for (int i = 0; i < listOfFiles.length; i++) {
if (listOfFiles[i].isFile()) {
if (listOfFiles[i].getName().endsWith(".json")) {
return listOfFiles[i].getAbsolutePath();
}
}
}
return null;
}
public static String[] parseJson(String json) {
String title = "";
String uploader = "";
String id = "";
Pattern titlePattern = Pattern.compile("\"fulltitle\": \"(.*?)\",");
Matcher titleMatcher = titlePattern.matcher(json);
Pattern uploaderPattern = Pattern.compile("\"uploader\": \"(.*?)\",");
Matcher uploaderMatcher = uploaderPattern.matcher(json);
Pattern idPattern = Pattern.compile("\"id\": \"(.*?)\",");
Matcher idMatcher = idPattern.matcher(json);
titleMatcher.find();
idMatcher.find();
uploaderMatcher.find();
title = titleMatcher.group(1);
uploader = uploaderMatcher.group(1);
id = idMatcher.group(1);
String[] info = {title,uploader,id};
return info;
}
public static String jsonToString(String fileName) {
String json = "";
try {
BufferedReader br = new BufferedReader(new FileReader(fileName));
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
line = br.readLine();
}
json = sb.toString();
br.close();
} catch (Exception e) {
e.printStackTrace();
}
return json;
}
public static void deleteAllFilesDir(String path) {
File folder = new File(path);
File[] files = folder.listFiles();
if (files != null) {
for (File f : files) {
f.delete();
}
}
}
public static ArrayList<String> txtToArrayList(String fileName) {
ArrayList<String> lines = new ArrayList<String>();
try {
FileReader fr = new FileReader(fileName);
BufferedReader br = new BufferedReader(fr);
String line;
while ((line = br.readLine()) != null) {
lines.add(line);
}
br.close();
} catch (Exception e) {
e.printStackTrace();
}
return lines;
}
}
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