Make matchMaterial accept the minecraft: namespace

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/Material.java

@@ -2781,9 +2781,9 @@ public enum Material implements Keyed {
     /**
      * Attempts to match the Material with the given name.
      * <p>
-     * This is a match lookup; names will be converted to uppercase, then
-     * stripped of special characters in an attempt to format it like the
-     * enum.
+     * This is a match lookup; names will be stripped of the "minecraft:"
+     * namespace, converted to uppercase, then stripped of special characters in
+     * an attempt to format it like the enum.
      *
      * @param name Name of the material to get
      * @return Material if found, or null
@@ -2795,9 +2795,9 @@ public enum Material implements Keyed {
     /**
      * Attempts to match the Material with the given name.
      * <p>
-     * This is a match lookup; names will be converted to uppercase, then
-     * stripped of special characters in an attempt to format it like the
-     * enum.
+     * This is a match lookup; names will be stripped of the "minecraft:"
+     * namespace, converted to uppercase, then stripped of special characters in
+     * an attempt to format it like the enum.
      *
      * @param name Name of the material to get
      * @param legacyName whether this is a legacy name
@@ -2806,7 +2806,12 @@ public enum Material implements Keyed {
     public static Material matchMaterial(final String name, boolean legacyName) {
         Validate.notNull(name, "Name cannot be null");
 
-        String filtered = name.toUpperCase(java.util.Locale.ENGLISH);
+        String filtered = name;
+        if (filtered.startsWith(NamespacedKey.MINECRAFT + ":")) {
+            filtered = filtered.substring((NamespacedKey.MINECRAFT + ":").length());
+        }
+
+        filtered = filtered.toUpperCase(java.util.Locale.ENGLISH);
 
         filtered = filtered.replaceAll("\\s+", "_").replaceAll("\\W", "");
         return getMaterial(filtered, legacyName);

paper-api/src/test/java/org/bukkit/MaterialTest.java

@@ -43,6 +43,26 @@ public class MaterialTest {
         }
     }
 
+    @Test
+    public void matchMaterialByKey() {
+        for (Material material : Material.values()) {
+            if (material.isLegacy()) {
+                continue;
+            }
+            assertThat(Material.matchMaterial(material.getKey().toString()), is(material));
+        }
+    }
+
+    @Test
+    public void matchMaterialByWrongNamespace() {
+        for (Material material : Material.values()) {
+            if (material.isLegacy()) {
+                continue;
+            }
+            assertNull(Material.matchMaterial("bogus:" + material.getKey().getKey()));
+        }
+    }
+
     @Test
     public void matchMaterialByLowerCaseAndSpaces() {
         for (Material material : Material.values()) {