pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / store / ByteArrayDataOutput.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/store/ByteArrayDataOutput.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/store/ByteArrayDataOutput.java
new file mode 100644 (file)
index 0000000..ca613ef
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/store/ByteArrayDataOutput.java
@@ -0,0 +1,69 @@
+package org.apache.lucene.store;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import org.apache.lucene.util.BytesRef;
+
+/**
+ * @lucene.experimental
+ */
+public class ByteArrayDataOutput extends DataOutput {
+  private byte[] bytes;
+
+  private int pos;
+  private int limit;
+
+  public ByteArrayDataOutput(byte[] bytes) {
+    reset(bytes);
+  }
+
+  public ByteArrayDataOutput(byte[] bytes, int offset, int len) {
+    reset(bytes, offset, len);
+  }
+
+  public ByteArrayDataOutput() {
+    reset(BytesRef.EMPTY_BYTES);
+  }
+
+  public void reset(byte[] bytes) {
+    reset(bytes, 0, bytes.length);
+  }
+  
+  public void reset(byte[] bytes, int offset, int len) {
+    this.bytes = bytes;
+    pos = offset;
+    limit = offset + len;
+  }
+  
+  public int getPosition() {
+    return pos;
+  }
+
+  @Override
+  public void writeByte(byte b) {
+    assert pos < limit;
+    bytes[pos++] = b;
+  }
+
+  @Override
+  public void writeBytes(byte[] b, int offset, int length) {
+    assert pos + length <= limit;
+    System.arraycopy(b, offset, bytes, pos, length);
+    pos += length;
+  }
+}