1 files changed, 41 insertions, 0 deletions
diff --git a/src/main/kotlin/com/notnite/gloppers/Gloppers.kt b/src/main/kotlin/com/notnite/gloppers/Gloppers.kt
new file mode 100644
index 0000000..bdea779
--- /dev/null
+++ b/src/main/kotlin/com/notnite/gloppers/Gloppers.kt
@@ -0,0 +1,41 @@
+package com.notnite.gloppers
+
+import net.fabricmc.api.DedicatedServerModInitializer
+import net.minecraft.block.entity.HopperBlockEntity
+import net.minecraft.inventory.Inventory
+import net.minecraft.item.ItemStack
+
+object Gloppers : DedicatedServerModInitializer {
+    override fun onInitializeServer() {}
+
+    private fun matchesGlob(glob: String, str: String): Boolean {
+        val regex = glob
+            .replace(".", "\\.")
+            .replace("*", ".*")
+            .replace("?", ".")
+        return str.matches(regex.toRegex())
+    }
+
+    fun canTransfer(to: Inventory, stack: ItemStack): Boolean {
+        if (to is HopperBlockEntity) {
+            val hopperName = to.name.copyContentOnly().string
+            val itemName = stack.registryEntry.key.get().value.path
+
+            if (hopperName.startsWith("!")) {
+                val globs = hopperName.substring(1).split(",")
+                for (glob in globs) {
+                    if (matchesGlob(glob, itemName)) {
+                        // Glob matched, transfer
+                        return true
+                    }
+                }
+
+                // No globs matched, so don't transfer
+                return false
+            }
+        }
+
+        // Doesn't have a glob, so transfer
+        return true
+    }
+}