Move all files! Hahah

src/main/java/com/intellectualcrafters/jnbt/NBTUtils.java

@@ -0,0 +1,151 @@
+package com.intellectualcrafters.jnbt;
+
+import java.util.Map;
+
+/**
+ * A class which contains NBT-related utility methods.
+ */
+public final class NBTUtils {
+    /**
+     * Default private constructor.
+     */
+    private NBTUtils() {
+    }
+
+    /**
+     * Gets the type name of a tag.
+     *
+     * @param clazz the tag class
+     *
+     * @return The type name.
+     */
+    public static String getTypeName(final Class<? extends Tag> clazz) {
+        if (clazz.equals(ByteArrayTag.class)) {
+            return "TAG_Byte_Array";
+        } else if (clazz.equals(ByteTag.class)) {
+            return "TAG_Byte";
+        } else if (clazz.equals(CompoundTag.class)) {
+            return "TAG_Compound";
+        } else if (clazz.equals(DoubleTag.class)) {
+            return "TAG_Double";
+        } else if (clazz.equals(EndTag.class)) {
+            return "TAG_End";
+        } else if (clazz.equals(FloatTag.class)) {
+            return "TAG_Float";
+        } else if (clazz.equals(IntTag.class)) {
+            return "TAG_Int";
+        } else if (clazz.equals(ListTag.class)) {
+            return "TAG_List";
+        } else if (clazz.equals(LongTag.class)) {
+            return "TAG_Long";
+        } else if (clazz.equals(ShortTag.class)) {
+            return "TAG_Short";
+        } else if (clazz.equals(StringTag.class)) {
+            return "TAG_String";
+        } else if (clazz.equals(IntArrayTag.class)) {
+            return "TAG_Int_Array";
+        } else {
+            throw new IllegalArgumentException("Invalid tag classs (" + clazz.getName() + ").");
+        }
+    }
+
+    /**
+     * Gets the type code of a tag class.
+     *
+     * @param clazz the tag class
+     *
+     * @return The type code.
+     *
+     * @throws IllegalArgumentException if the tag class is invalid.
+     */
+    public static int getTypeCode(final Class<? extends Tag> clazz) {
+        if (clazz.equals(ByteArrayTag.class)) {
+            return NBTConstants.TYPE_BYTE_ARRAY;
+        } else if (clazz.equals(ByteTag.class)) {
+            return NBTConstants.TYPE_BYTE;
+        } else if (clazz.equals(CompoundTag.class)) {
+            return NBTConstants.TYPE_COMPOUND;
+        } else if (clazz.equals(DoubleTag.class)) {
+            return NBTConstants.TYPE_DOUBLE;
+        } else if (clazz.equals(EndTag.class)) {
+            return NBTConstants.TYPE_END;
+        } else if (clazz.equals(FloatTag.class)) {
+            return NBTConstants.TYPE_FLOAT;
+        } else if (clazz.equals(IntTag.class)) {
+            return NBTConstants.TYPE_INT;
+        } else if (clazz.equals(ListTag.class)) {
+            return NBTConstants.TYPE_LIST;
+        } else if (clazz.equals(LongTag.class)) {
+            return NBTConstants.TYPE_LONG;
+        } else if (clazz.equals(ShortTag.class)) {
+            return NBTConstants.TYPE_SHORT;
+        } else if (clazz.equals(StringTag.class)) {
+            return NBTConstants.TYPE_STRING;
+        } else if (clazz.equals(IntArrayTag.class)) {
+            return NBTConstants.TYPE_INT_ARRAY;
+        } else {
+            throw new IllegalArgumentException("Invalid tag classs (" + clazz.getName() + ").");
+        }
+    }
+
+    /**
+     * Gets the class of a type of tag.
+     *
+     * @param type the type
+     *
+     * @return The class.
+     *
+     * @throws IllegalArgumentException if the tag type is invalid.
+     */
+    public static Class<? extends Tag> getTypeClass(final int type) {
+        switch (type) {
+            case NBTConstants.TYPE_END:
+                return EndTag.class;
+            case NBTConstants.TYPE_BYTE:
+                return ByteTag.class;
+            case NBTConstants.TYPE_SHORT:
+                return ShortTag.class;
+            case NBTConstants.TYPE_INT:
+                return IntTag.class;
+            case NBTConstants.TYPE_LONG:
+                return LongTag.class;
+            case NBTConstants.TYPE_FLOAT:
+                return FloatTag.class;
+            case NBTConstants.TYPE_DOUBLE:
+                return DoubleTag.class;
+            case NBTConstants.TYPE_BYTE_ARRAY:
+                return ByteArrayTag.class;
+            case NBTConstants.TYPE_STRING:
+                return StringTag.class;
+            case NBTConstants.TYPE_LIST:
+                return ListTag.class;
+            case NBTConstants.TYPE_COMPOUND:
+                return CompoundTag.class;
+            case NBTConstants.TYPE_INT_ARRAY:
+                return IntArrayTag.class;
+            default:
+                throw new IllegalArgumentException("Invalid tag type : " + type + ".");
+        }
+    }
+
+    /**
+     * Get child tag of a NBT structure.
+     *
+     * @param items    the map to read from
+     * @param key      the key to look for
+     * @param expected the expected NBT class type
+     * @param <T>
+     *
+     * @return child tag
+     */
+    public static <T extends Tag> T getChildTag(final Map<String, Tag> items, final String key, final Class<T> expected) throws IllegalArgumentException {
+        if (!items.containsKey(key)) {
+            throw new IllegalArgumentException("Missing a \"" + key + "\" tag");
+        }
+        final Tag tag = items.get(key);
+        if (!expected.isInstance(tag)) {
+            throw new IllegalArgumentException(key + " tag is not of tag type " + expected.getName());
+        }
+        return expected.cast(tag);
+    }
+}