1 files changed, 39 insertions, 0 deletions
diff --git a/src/main/java/gregtech/nei/dumper/MaterialDumper.java b/src/main/java/gregtech/nei/dumper/MaterialDumper.java
new file mode 100644
index 0000000000..3234779de8
--- /dev/null
+++ b/src/main/java/gregtech/nei/dumper/MaterialDumper.java
@@ -0,0 +1,39 @@
+package gregtech.nei.dumper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.stream.Collectors;
+
+import gregtech.api.GregTech_API;
+import gregtech.api.enums.Materials;
+
+public class MaterialDumper extends GregTechIDDumper {
+
+    public MaterialDumper() {
+        super("material");
+    }
+
+    @Override
+    public String[] header() {
+        return new String[] { "id", "name", };
+    }
+
+    @Override
+    protected Iterable<String[]> dump(Mode mode) {
+        List<String[]> dump = new ArrayList<>();
+        Map<Integer, Materials> idMap = Arrays.stream(GregTech_API.sGeneratedMaterials)
+            .filter(Objects::nonNull)
+            .collect(Collectors.toMap(m -> m.mMetaItemSubID, m -> m));
+        for (int i = 0; i < 1000; i++) {
+            if (mode == Mode.FREE && !idMap.containsKey(i)) {
+                dump.add(new String[] { String.valueOf(i), "", });
+            } else if (mode == Mode.USED && idMap.containsKey(i)) {
+                dump.add(new String[] { String.valueOf(i), idMap.get(i).mName, });
+            }
+        }
+        return dump;
+    }
+}