Reverted to original TextWrapper. Might re-investigate after the RB. Fixes BUKKIT-1275

src/main/java/net/minecraft/server/NetServerHandler.java

@@ -15,9 +15,7 @@ import org.bukkit.ChatColor;
 import org.bukkit.craftbukkit.ChunkCompressionThread;
 import org.bukkit.Location;
 import org.bukkit.command.CommandException;
-import org.bukkit.conversations.Conversable;
 import org.bukkit.craftbukkit.CraftWorld;
-import org.bukkit.craftbukkit.inventory.CraftInventoryCustom;
 import org.bukkit.craftbukkit.inventory.CraftInventoryView;
 import org.bukkit.craftbukkit.inventory.CraftItemStack;
 import org.bukkit.craftbukkit.block.CraftBlock;
@@ -718,10 +716,7 @@ public class NetServerHandler extends NetHandler implements ICommandListener {
             this.player.compassTarget = new Location(this.getPlayer().getWorld(), packet6.x, packet6.y, packet6.z);
         } else if (packet instanceof Packet3Chat) {
             String message = ((Packet3Chat) packet).message;
-            boolean first = true;
-            for (String line : TextWrapper.wrapText(message)) {
-                if (!first) line = " " + line;
-                first = false;
+            for (final String line : TextWrapper.wrapText(message)) {
                 this.networkManager.queue(new Packet3Chat(line));
             }
             packet = null;

src/main/java/org/bukkit/craftbukkit/TextWrapper.java

@@ -1,20 +1,88 @@
 package org.bukkit.craftbukkit;
 
-import org.bukkit.ChatColor;
-
 public class TextWrapper {
+    private static final int[] characterWidths = new int[] {
+        1, 9, 9, 8, 8, 8, 8, 7, 9, 8, 9, 9, 8, 9, 9, 9,
+        8, 8, 8, 8, 9, 9, 8, 9, 8, 8, 8, 8, 8, 9, 9, 9,
+        4, 2, 5, 6, 6, 6, 6, 3, 5, 5, 5, 6, 2, 6, 2, 6,
+        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 5, 6, 5, 6,
+        7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 6, 6, 6, 6, 6, 6,
+        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 6, 4, 6, 6,
+        3, 6, 6, 6, 6, 6, 5, 6, 6, 2, 6, 5, 3, 6, 6, 6,
+        6, 6, 6, 6, 4, 6, 6, 6, 6, 6, 6, 5, 2, 5, 7, 6,
+        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 6, 3, 6, 6,
+        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 6,
+        6, 3, 6, 6, 6, 6, 6, 6, 6, 7, 6, 6, 6, 2, 6, 6,
+        8, 9, 9, 6, 6, 6, 8, 8, 6, 8, 8, 8, 8, 8, 6, 6,
+        9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
+        9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 9, 9, 9, 5, 9, 9,
+        8, 7, 7, 8, 7, 8, 8, 8, 7, 8, 8, 7, 9, 9, 6, 7,
+        7, 7, 7, 7, 9, 6, 7, 8, 7, 6, 6, 9, 7, 6, 7, 1
+    };
+    private static final char COLOR_CHAR = '\u00A7';
+    private static final int CHAT_WINDOW_WIDTH = 320;
     private static final int CHAT_STRING_LENGTH = 119;
+    private static final String allowedChars = net.minecraft.server.SharedConstants.allowedCharacters;
 
     public static String[] wrapText(final String text) {
-        return insertLineBreaks(text).split("\n");
-    }
+        final StringBuilder out = new StringBuilder();
+        char colorChar = 'f';
+        int lineWidth = 0;
+        int lineLength = 0;
 
-    public static String insertLineBreaks(String input) {
-        if (input.length() <= CHAT_STRING_LENGTH) return input;
+        // Go over the message char by char.
+        for (int i = 0; i < text.length(); i++) {
+            char ch = text.charAt(i);
 
-        String head = input.substring(0, CHAT_STRING_LENGTH);
-        String tail = ChatColor.getLastColors(head) + input.substring(CHAT_STRING_LENGTH + (input.charAt(CHAT_STRING_LENGTH) == ' ' ? 1 : 0));
-
-        return head + "\n" + insertLineBreaks(tail);
+            // Get the color
+            if (ch == COLOR_CHAR && i < text.length() - 1) {
+                // We might need a linebreak ... so ugly ;(
+                if (lineLength + 2 > CHAT_STRING_LENGTH) {
+                    out.append('\n');
+                    lineLength = 0;
+                    if (colorChar != 'f' && colorChar != 'F') {
+                        out.append(COLOR_CHAR).append(colorChar);
+                        lineLength += 2;
+                    }
+                }
+                colorChar = text.charAt(++i);
+                out.append(COLOR_CHAR).append(colorChar);
+                lineLength += 2;
+                continue;
+            }
+
+            // Figure out if it's allowed
+            int index = allowedChars.indexOf(ch);
+            if (index == -1) {
+                // Invalid character .. skip it.
+                continue;
+            } else {
+                // Sadly needed as the allowedChars string misses the first
+                index += 32;
+            }
+
+            // Find the width
+            final int width = characterWidths[index];
+
+            // See if we need a linebreak
+            if (lineLength + 1 > CHAT_STRING_LENGTH || lineWidth + width >= CHAT_WINDOW_WIDTH) {
+                out.append('\n');
+                lineLength = 0;
+
+                // Re-apply the last color if it isn't the default
+                if (colorChar != 'f' && colorChar != 'F') {
+                    out.append(COLOR_CHAR).append(colorChar);
+                    lineLength += 2;
+                }
+                lineWidth = width;
+            } else {
+                lineWidth += width;
+            }
+            out.append(ch);
+            lineLength++;
+        }
+
+        // Return it split
+        return out.toString().split("\n");
     }
 }