From 4f773bbbf94736710ecd76c728fd711b0e1f147b Mon Sep 17 00:00:00 2001
From: "Aidan C. Brady" <aidancbrady@aol.com>
Date: Tue, 22 Oct 2013 22:29:25 -0400
Subject: [PATCH] Began adding inventory algorithms.

---
 .../common/util/TransporterUtils.java         | 137 +++++++++++++++++-
 1 file changed, 133 insertions(+), 4 deletions(-)

diff --git a/common/mekanism/common/util/TransporterUtils.java b/common/mekanism/common/util/TransporterUtils.java
index d78f070fe..db52c0087 100644
--- a/common/mekanism/common/util/TransporterUtils.java
+++ b/common/mekanism/common/util/TransporterUtils.java
@@ -128,8 +128,137 @@ public final class TransporterUtils
     	return true;
     }
     
-    public static ItemStack putInInventory(IInventory inventory, ItemStack itemStack)
-    {
-    	return null;//TODO
-    }
+	public static ItemStack putStackInInventory(IInventory inventory, ItemStack itemStack, int side) 
+	{
+		if (!(inventory instanceof ISidedInventory)) {
+			for (int i = 0; i <= inventory.getSizeInventory() - 1; i++)
+			{
+				if (inventory.isItemValidForSlot(i, itemStack)) {
+					ItemStack inSlot = inventory.getStackInSlot(i);
+
+					if (inSlot == null) {
+						inventory.setInventorySlotContents(i, itemStack);
+						return null;
+					} 
+					else if (inSlot.isItemEqual(itemStack)
+							&& inSlot.stackSize < inSlot.getMaxStackSize()) 
+					{
+						if (inSlot.stackSize + itemStack.stackSize <= inSlot
+								.getMaxStackSize()) {
+							ItemStack toSet = itemStack.copy();
+							toSet.stackSize += inSlot.stackSize;
+
+							inventory.setInventorySlotContents(i, toSet);
+							return null;
+						} 
+						else {
+							int rejects = (inSlot.stackSize + itemStack.stackSize) - inSlot.getMaxStackSize();
+
+							ItemStack toSet = itemStack.copy();
+							toSet.stackSize = inSlot.getMaxStackSize();
+
+							ItemStack remains = itemStack.copy();
+							remains.stackSize = rejects;
+
+							inventory.setInventorySlotContents(i, toSet);
+							return remains;
+						}
+					}
+				}
+			}
+		} 
+		else {
+			ISidedInventory sidedInventory = (ISidedInventory) inventory;
+			int[] slots = sidedInventory.getAccessibleSlotsFromSide(side);
+
+			for (int get = 0; get <= slots.length - 1; get++) 
+			{
+				int slotID = slots[get];
+
+				if (sidedInventory.isItemValidForSlot(slotID, itemStack)
+						&& sidedInventory
+								.canInsertItem(slotID, itemStack, side)) 
+				{
+					ItemStack inSlot = inventory.getStackInSlot(slotID);
+
+					if (inSlot == null) {
+						inventory.setInventorySlotContents(slotID, itemStack);
+						return null;
+					} 
+					else if (inSlot.isItemEqual(itemStack) && inSlot.stackSize < inSlot.getMaxStackSize())
+					{
+						if (inSlot.stackSize + itemStack.stackSize <= inSlot
+								.getMaxStackSize()) {
+							ItemStack toSet = itemStack.copy();
+							toSet.stackSize += inSlot.stackSize;
+
+							inventory.setInventorySlotContents(slotID, toSet);
+							return null;
+						} 
+						else {
+							int rejects = (inSlot.stackSize + itemStack.stackSize)
+									- inSlot.getMaxStackSize();
+
+							ItemStack toSet = itemStack.copy();
+							toSet.stackSize = inSlot.getMaxStackSize();
+
+							ItemStack remains = itemStack.copy();
+							remains.stackSize = rejects;
+
+							inventory.setInventorySlotContents(slotID, toSet);
+							return remains;
+						}
+					}
+				}
+			}
+		}
+
+		return itemStack;
+	}
+
+	public static ItemStack takeTopItemFromInventory(IInventory inventory, int side) 
+	{
+		if (!(inventory instanceof ISidedInventory)) 
+		{
+			for (int i = inventory.getSizeInventory() - 1; i >= 0; i--) 
+			{
+				if (inventory.getStackInSlot(i) != null) {
+					ItemStack toSend = inventory.getStackInSlot(i).copy();
+					toSend.stackSize = 1;
+
+					inventory.decrStackSize(i, 1);
+
+					return toSend;
+				}
+			}
+		} 
+		else {
+			ISidedInventory sidedInventory = (ISidedInventory) inventory;
+			int[] slots = sidedInventory.getAccessibleSlotsFromSide(side);
+
+			if (slots != null) 
+			{
+				for (int get = slots.length - 1; get >= 0; get--) 
+				{
+					int slotID = slots[get];
+
+					if (sidedInventory.getStackInSlot(slotID) != null) 
+					{
+						ItemStack toSend = sidedInventory
+								.getStackInSlot(slotID);
+						toSend.stackSize = 1;
+
+						if (sidedInventory.canExtractItem(slotID, toSend, side)) 
+						{
+							sidedInventory.decrStackSize(slotID, 1);
+
+							return toSend;
+						}
+					}
+				}
+			}
+		}
+
+		return null;
+	}
 }
\ No newline at end of file