1 files changed, 61 insertions, 0 deletions
diff --git a/base/src/main/java/bjc/utils/ioutils/blocks/BoundBlockReader.java b/base/src/main/java/bjc/utils/ioutils/blocks/BoundBlockReader.java
new file mode 100644
index 0000000..b1e82d7
--- /dev/null
+++ b/base/src/main/java/bjc/utils/ioutils/blocks/BoundBlockReader.java
@@ -0,0 +1,61 @@
+package bjc.utils.ioutils.blocks;
+
+import java.io.IOException;
+
+import java.util.function.BooleanSupplier;
+import java.util.function.Supplier;
+
+public class BoundBlockReader implements BlockReader {
+	@FunctionalInterface
+	public interface Closer {
+		public void close() throws IOException;
+	}
+
+	private BooleanSupplier checker;
+	private Supplier<Block> getter;
+	private Closer          closer;
+
+	private Block current;
+
+	private int blockNo;
+
+	public BoundBlockReader(BooleanSupplier blockChecker, Supplier<Block> blockGetter, Closer blockCloser) {
+		checker = blockChecker;
+		getter  = blockGetter;
+		closer  = blockCloser;
+
+		blockNo = 0;
+	}
+
+	@Override
+	public boolean hasNextBlock() {
+		return checker.getAsBoolean();
+	}
+
+	@Override
+	public Block getBlock() {
+		return current;
+	}
+
+	@Override
+	public boolean nextBlock() {
+		if(checker.getAsBoolean()) {
+			current  = getter.get();
+			blockNo += 1;
+
+			return true;
+		} 
+
+		return false;
+	}
+
+	@Override
+	public int getBlockCount() {
+		return blockNo;
+	}
+
+	@Override
+	public void close() throws IOException {
+		closer.close();
+	}
+}