From c82e3b3b2de0633317ec8fc85925e91422820597 Mon Sep 17 00:00:00 2001
From: "Benjamin J. Culkin" <bjculkin@mix.wvu.edu>
Date: Sun, 8 Oct 2017 22:39:59 -0300
Subject: Start splitting into maven modules

---
 .../utils/ioutils/blocks/MappedBlockReader.java    | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 base/src/main/java/bjc/utils/ioutils/blocks/MappedBlockReader.java

(limited to 'base/src/main/java/bjc/utils/ioutils/blocks/MappedBlockReader.java')

diff --git a/base/src/main/java/bjc/utils/ioutils/blocks/MappedBlockReader.java b/base/src/main/java/bjc/utils/ioutils/blocks/MappedBlockReader.java
new file mode 100644
index 0000000..12fa848
--- /dev/null
+++ b/base/src/main/java/bjc/utils/ioutils/blocks/MappedBlockReader.java
@@ -0,0 +1,54 @@
+package bjc.utils.ioutils.blocks;
+
+import java.io.IOException;
+
+import java.util.function.UnaryOperator;
+
+public class MappedBlockReader implements BlockReader {
+	private BlockReader reader;
+
+	private Block current;
+
+	private UnaryOperator<Block> transform;
+
+	private int blockNo;
+
+	public MappedBlockReader(BlockReader source, UnaryOperator<Block> trans) {
+		reader    = source;
+		transform = trans;
+
+		blockNo = 0;
+	}
+
+	@Override
+	public boolean hasNextBlock() {
+		return reader.hasNextBlock();
+	}
+
+	@Override
+	public Block getBlock() {
+		return current;
+	}
+
+	@Override	
+	public boolean nextBlock() {
+		if(hasNextBlock()) {
+			current  = transform.apply(reader.next());
+			blockNo += 1;
+
+			return true;
+		}
+
+		return false;
+	}
+
+	@Override
+	public int getBlockCount() {
+		return blockNo;
+	}
+
+	@Override
+	public void close() throws IOException {
+		reader.close();
+	}
+}
-- 
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