From 9883e790c47a3d7eaaa29be953519363a7655314 Mon Sep 17 00:00:00 2001
From: asiekierka <kontakt@asie.pl>
Date: Sat, 13 Dec 2014 19:32:16 +0100
Subject: [PATCH] fix blueprints over ~32k not working (#2289)

---
 .../builders/TileBlueprintLibrary.java        | 60 +++++++++++++++----
 1 file changed, 47 insertions(+), 13 deletions(-)

diff --git a/common/buildcraft/builders/TileBlueprintLibrary.java b/common/buildcraft/builders/TileBlueprintLibrary.java
index 571ca8ec..66d89b3e 100644
--- a/common/buildcraft/builders/TileBlueprintLibrary.java
+++ b/common/buildcraft/builders/TileBlueprintLibrary.java
@@ -39,6 +39,7 @@ import buildcraft.core.utils.Utils;
  */
 public class TileBlueprintLibrary extends TileBuildCraft implements IInventory, ICommandReceiver {
 	private static final int PROGRESS_TIME = 100;
+	private static final int CHUNK_SIZE = 16384;
 
 	public SimpleInventory inv = new SimpleInventory(4, "Blueprint Library", 1);
 
@@ -54,6 +55,9 @@ public class TileBlueprintLibrary extends TileBuildCraft implements IInventory,
 
 	public int pageId = 0;
 
+	private BlueprintId blueprintDownloadId;
+	private byte[] blueprintDownload;
+
 	public TileBlueprintLibrary() {
 
 	}
@@ -261,16 +265,35 @@ public class TileBlueprintLibrary extends TileBuildCraft implements IInventory,
 			if ("requestSelectedBlueprint".equals(command)) {
 				if (isOutputConsistent()) {
 					if (selected > -1 && selected < currentPage.size()) {
+						// Work around 32k max limit on client->server
 						final BlueprintBase bpt = BuildCraftBuilders.clientDB
 								.load(currentPage.get(selected));
+						final byte[] bptData = bpt.getData();
+						final int chunks = (bptData.length + CHUNK_SIZE - 1) / CHUNK_SIZE;
 
-						BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadBlueprintToServer",
+						BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadServerBegin",
 								new CommandWriter() {
-							public void write(ByteBuf data) {
-								bpt.id.writeData(data);
-								Utils.writeByteArray(data, bpt.getData());
-							}
-						}));
+									public void write(ByteBuf data) {
+										bpt.id.writeData(data);
+										data.writeShort(chunks);
+									}
+								}));
+
+						for (int i = 0; i < chunks; i++) {
+							final int chunk = i;
+							final int start = CHUNK_SIZE * chunk;
+							final int length = Math.min(CHUNK_SIZE, bptData.length - start);
+							BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadServerChunk",
+									new CommandWriter() {
+										public void write(ByteBuf data) {
+											data.writeShort(chunk);
+											data.writeShort(length);
+											data.writeBytes(bptData, start, length);
+										}
+									}));
+						}
+
+						BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadServerEnd", null));
 					} else {
 						BuildCraftCore.instance.sendToServer(new PacketCommand(this, "uploadNothingToServer", null));
 					}
@@ -298,15 +321,24 @@ public class TileBlueprintLibrary extends TileBuildCraft implements IInventory,
 				setInventorySlotContents(2, null);
 
 				downloadingPlayer = null;
-			} else if ("uploadBlueprintToServer".equals(command)) {
-				BlueprintId id = new BlueprintId();
-				id.readData(stream);
-				byte[] data = Utils.readByteArray(stream);
+			} else if ("uploadServerBegin".equals(command)) {
+				blueprintDownloadId = new BlueprintId();
+				blueprintDownloadId.readData(stream);
+				blueprintDownload = new byte[CHUNK_SIZE * stream.readUnsignedShort()];
+			} else if ("uploadServerChunk".equals(command)) {
+				int start = stream.readUnsignedShort() * CHUNK_SIZE;
+				int length = stream.readUnsignedShort();
+				if (blueprintDownload != null) {
+					stream.readBytes(blueprintDownload, start, length);
+				} else {
+					stream.skipBytes(length);
+				}
+			} else if ("uploadServerEnd".equals(command)) {
 				try {
-					NBTTagCompound nbt = CompressedStreamTools.func_152457_a(data, NBTSizeTracker.field_152451_a);
+					NBTTagCompound nbt = CompressedStreamTools.func_152457_a(blueprintDownload, NBTSizeTracker.field_152451_a);
 					BlueprintBase bpt = BlueprintBase.loadBluePrint(nbt);
-					bpt.setData(data);
-					bpt.id = id;
+					bpt.setData(blueprintDownload);
+					bpt.id = blueprintDownloadId;
 					BuildCraftBuilders.serverDB.add(bpt);
 
 					setInventorySlotContents(3, bpt.getStack());
@@ -315,6 +347,8 @@ public class TileBlueprintLibrary extends TileBuildCraft implements IInventory,
 					e.printStackTrace();
 				}
 
+				blueprintDownloadId = null;
+				blueprintDownload = null;
 				downloadingPlayer = null;
 			}
 		}