PaperMC/CraftBukkit-Patches/0068-Fix-links-in-chat.patch

From 4f2f1f5b626323a15226c3ac2791a11f732f19bb Mon Sep 17 00:00:00 2001
From: Thinkofdeath <purggames@gmail.com>
Date: Sun, 1 Dec 2013 10:33:55 +0000
Subject: [PATCH] Fix links in chat


diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java b/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java
index cc8e715..a786da9 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java
@@ -3,11 +3,15 @@ package org.bukkit.craftbukkit.util;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import net.minecraft.server.ChatComponentText;
 import net.minecraft.server.ChatModifier;
 import net.minecraft.server.EnumChatFormat;
 import net.minecraft.server.IChatBaseComponent;
+import net.minecraft.server.ChatClickable;
+import net.minecraft.server.EnumClickAction;
 
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableMap.Builder;
@@ -29,6 +33,7 @@ public final class CraftChatMessage {
         private ChatModifier modifier = new ChatModifier();
         private StringBuilder builder = new StringBuilder();
         private final IChatBaseComponent[] output;
+        private static final Pattern url = Pattern.compile("^(?:(https?)://)?([-\\w_\\.]{2,}\\.[a-z]{2,4})(/\\S*)?$");
 
         private FromString(String message) {
             if (message == null) {
@@ -38,6 +43,8 @@ public final class CraftChatMessage {
             list.add(currentChatComponent);
 
             EnumChatFormat format = null;
+            Matcher matcher = url.matcher(message);
+            int lastWord = 0;
 
             for (int i = 0; i < message.length(); i++) {
                 char currentChar = message.charAt(i);
@@ -78,6 +85,28 @@ public final class CraftChatMessage {
                     }
                     currentChatComponent = null;
                 } else {
+                    if (currentChar == ' ' || i == message.length() - 1) {
+                        Matcher urlMatcher = matcher.region(lastWord, i == message.length() - 1 ? message.length() : i);
+                        lastWord = i + 1;
+                        if (urlMatcher.find()) {
+                            String fullUrl = urlMatcher.group(0);
+                            String protocol = urlMatcher.group(1);
+                            String url = urlMatcher.group(2);
+                            builder.delete(builder.length() - fullUrl.length() + (i == message.length() - 1 ? 1 : 0), builder.length());
+                            if (builder.length() > 0) {
+                                appendNewComponent();
+                            }
+                            builder.append(fullUrl);
+                            ChatClickable link = new ChatClickable(EnumClickAction.OPEN_URL, (protocol!=null?protocol:"http") + "://" + url);
+                            modifier.a(link);
+                            appendNewComponent();
+                            modifier.a((ChatClickable) null);
+                            if (i == message.length() - 1) {
+                                appendNewComponent();
+                                break;
+                            }
+                        }
+                    }
                     builder.append(currentChar);
                 }
             }
-- 
1.8.3.2