Simplification

app/src/main/java/eu/faircode/email/DisconnectBlacklist.java

@@ -32,7 +32,6 @@ import org.json.JSONObject;
 import java.io.File;
 import java.io.IOException;
 import java.net.URL;
-import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
@@ -120,7 +119,7 @@ public class DisconnectBlacklist {
         connection.connect();
 
         try {
-            String response = Helper.readStream(connection.getInputStream(), StandardCharsets.UTF_8.name());
+            String response = Helper.readStream(connection.getInputStream());
             Helper.writeText(file, response);
         } finally {
             connection.disconnect();

app/src/main/java/eu/faircode/email/Helper.java

@@ -104,6 +104,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.UnsupportedEncodingException;
+import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
@@ -1139,7 +1140,11 @@ public class Helper {
         }
     }
 
-    static String readStream(InputStream is, String charset) throws IOException {
+    static String readStream(InputStream is) throws IOException {
+        return readStream(is, StandardCharsets.UTF_8);
+    }
+
+    static String readStream(InputStream is, Charset charset) throws IOException {
         ByteArrayOutputStream os = new ByteArrayOutputStream(Math.max(BUFFER_SIZE, is.available()));
         byte[] buffer = new byte[BUFFER_SIZE];
         for (int len = is.read(buffer); len != -1; len = is.read(buffer))
@@ -1149,7 +1154,7 @@ public class Helper {
 
     static String readText(File file) throws IOException {
         try (FileInputStream in = new FileInputStream(file)) {
-            return readStream(in, StandardCharsets.UTF_8.name());
+            return readStream(in);
         }
     }
 

app/src/main/java/eu/faircode/email/IPInfo.java

@@ -31,7 +31,6 @@ import java.io.IOException;
 import java.net.InetAddress;
 import java.net.URL;
 import java.net.UnknownHostException;
-import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -79,7 +78,7 @@ public class IPInfo {
 
         Organization organization = new Organization();
         try {
-            String response = Helper.readStream(connection.getInputStream(), StandardCharsets.UTF_8.name());
+            String response = Helper.readStream(connection.getInputStream());
             organization.name = response.trim();
             if ("".equals(organization.name) || "undefined".equals(organization.name))
                 organization.name = null;

app/src/main/java/eu/faircode/email/MessageHelper.java

@@ -1748,7 +1748,7 @@ public class MessageHelper {
                         result = (String) content;
                     else if (content instanceof InputStream)
                         // Typically com.sun.mail.util.QPDecoderStream
-                        result = Helper.readStream((InputStream) content, StandardCharsets.UTF_8.name());
+                        result = Helper.readStream((InputStream) content);
                     else
                         result = content.toString();
                 } catch (IOException | FolderClosedException | MessageRemovedException ex) {