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Add serveral functions to the Utils class
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@ -17,8 +17,17 @@
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package de.mas.wiiu.jnus.utils;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.math.BigInteger;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.time.Instant;
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import java.time.ZoneId;
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import java.time.ZonedDateTime;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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@ -30,6 +39,7 @@ import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXParseException;
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import de.mas.wiiu.jnus.Settings;
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import lombok.extern.java.Log;
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@Log
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@ -162,4 +172,68 @@ public final class Utils {
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}
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}
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public static long StringToLong(String s) {
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try {
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BigInteger bi = new BigInteger(s, 16);
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return bi.longValue();
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} catch (NumberFormatException e) {
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System.err.println("Invalid Title ID");
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return 0L;
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}
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}
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public static boolean checkFileExists(String path) {
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return new File(path).exists();
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}
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/**
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* Pings a HTTP URL. This effectively sends a HEAD request and returns <code>true</code> if the response code is in the 200-399 range.
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*
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* @param url
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* The HTTP URL to be pinged.
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* @param timeout
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* The timeout in millis for both the connection timeout and the response read timeout. Note that the total timeout is effectively two times the
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* given timeout.
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* @return <code>true</code> if the given HTTP URL has returned response code 200-399 on a HEAD request within the given timeout, otherwise
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* <code>false</code>.
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*/
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public static boolean pingURL(String url, int timeout) {
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try {
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HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
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connection.setRequestProperty("User-Agent", Settings.USER_AGENT);
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connection.setConnectTimeout(timeout);
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connection.setReadTimeout(timeout);
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int responseCode = connection.getResponseCode();
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return (200 <= responseCode && responseCode <= 399);
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} catch (IOException exception) {
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return false;
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}
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}
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public static Long getLastModifiedURL(String url, int timeout) throws IOException {
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HttpURLConnection connection = (HttpURLConnection) new URL(url).openConnection();
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connection.setRequestProperty("User-Agent", Settings.USER_AGENT);
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connection.setConnectTimeout(timeout);
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connection.setReadTimeout(timeout);
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int responseCode = connection.getResponseCode();
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if (responseCode == HttpURLConnection.HTTP_OK) {
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InputStream inputStream = connection.getInputStream();
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byte[] buffer = new byte[0x10];
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inputStream.read(buffer);
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inputStream.close();
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} else {
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return null;
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}
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Long dateTime = connection.getLastModified();
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if (200 <= responseCode && responseCode <= 399) {
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return dateTime;
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}
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return null;
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}
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}
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