1 files changed, 40 insertions, 0 deletions
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/StreamerMode.java b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/StreamerMode.java
new file mode 100644
index 00000000..40b75e50
--- /dev/null
+++ b/src/main/java/io/github/moulberry/notenoughupdates/miscfeatures/StreamerMode.java
@@ -0,0 +1,40 @@
+package io.github.moulberry.notenoughupdates.miscfeatures;
+
+import io.github.moulberry.notenoughupdates.util.Utils;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class StreamerMode {
+
+    private static final Pattern lobbyPattern = Pattern.compile("(mini|mega|m|M)([0-9]{1,3}[A-Z])");
+
+    public static String filterLobbyNames(String line) {
+        Matcher matcher = lobbyPattern.matcher(line);
+        if(matcher.find() && matcher.groupCount() == 2) {
+            String lobbyType = matcher.group(1);
+            String lobbyId = matcher.group(2);
+            long lobbyNum = Long.parseLong(lobbyId.substring(0, lobbyId.length()-1));
+
+            long obfLobbyNum = (lobbyNum*9182739 + 11) % 500;
+            char obfLobbyLetter = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".charAt((int)(obfLobbyNum%26));
+
+            line = line.replaceAll("(mini|mega|m|M)([0-9]{1,3}[A-Z])", lobbyType+obfLobbyNum+obfLobbyLetter);
+        }
+        return line;
+    }
+
+    public static String filterScoreboard(String line) {
+        line = filterLobbyNames(Utils.cleanDuplicateColourCodes(line));
+        return line;
+    }
+
+    public static String filterChat(String line) {
+        line = filterLobbyNames(line);
+        return line;
+    }
+
+}