pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / src / java / org / apache / lucene / store / RAMOutputStream.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/store/RAMOutputStream.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/store/RAMOutputStream.java
deleted file mode 100644 (file)
index b07fe07..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/store/RAMOutputStream.java
+++ /dev/null
@@ -1,185 +0,0 @@
-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 java.io.IOException;
-
-/**
- * A memory-resident {@link IndexOutput} implementation.
- *
- * @lucene.internal
- */
-public class RAMOutputStream extends IndexOutput {
-  static final int BUFFER_SIZE = 1024;
-
-  private RAMFile file;
-
-  private byte[] currentBuffer;
-  private int currentBufferIndex;
-  
-  private int bufferPosition;
-  private long bufferStart;
-  private int bufferLength;
-
-  /** Construct an empty output buffer. */
-  public RAMOutputStream() {
-    this(new RAMFile());
-  }
-
-  public RAMOutputStream(RAMFile f) {
-    file = f;
-
-    // make sure that we switch to the
-    // first needed buffer lazily
-    currentBufferIndex = -1;
-    currentBuffer = null;
-  }
-
-  /** Copy the current contents of this buffer to the named output. */
-  public void writeTo(IndexOutput out) throws IOException {
-    flush();
-    final long end = file.length;
-    long pos = 0;
-    int buffer = 0;
-    while (pos < end) {
-      int length = BUFFER_SIZE;
-      long nextPos = pos + length;
-      if (nextPos > end) {                        // at the last buffer
-        length = (int)(end - pos);
-      }
-      out.writeBytes(file.getBuffer(buffer++), length);
-      pos = nextPos;
-    }
-  }
-
-  /** Resets this to an empty file. */
-  public void reset() {
-    currentBuffer = null;
-    currentBufferIndex = -1;
-    bufferPosition = 0;
-    bufferStart = 0;
-    bufferLength = 0;
-    file.setLength(0);
-  }
-
-  @Override
-  public void close() throws IOException {
-    flush();
-  }
-
-  @Override
-  public void seek(long pos) throws IOException {
-    // set the file length in case we seek back
-    // and flush() has not been called yet
-    setFileLength();
-    if (pos < bufferStart || pos >= bufferStart + bufferLength) {
-      currentBufferIndex = (int) (pos / BUFFER_SIZE);
-      switchCurrentBuffer();
-    }
-
-    bufferPosition = (int) (pos % BUFFER_SIZE);
-  }
-
-  @Override
-  public long length() {
-    return file.length;
-  }
-
-  @Override
-  public void writeByte(byte b) throws IOException {
-    if (bufferPosition == bufferLength) {
-      currentBufferIndex++;
-      switchCurrentBuffer();
-    }
-    currentBuffer[bufferPosition++] = b;
-  }
-
-  @Override
-  public void writeBytes(byte[] b, int offset, int len) throws IOException {
-    assert b != null;
-    while (len > 0) {
-      if (bufferPosition ==  bufferLength) {
-        currentBufferIndex++;
-        switchCurrentBuffer();
-      }
-
-      int remainInBuffer = currentBuffer.length - bufferPosition;
-      int bytesToCopy = len < remainInBuffer ? len : remainInBuffer;
-      System.arraycopy(b, offset, currentBuffer, bufferPosition, bytesToCopy);
-      offset += bytesToCopy;
-      len -= bytesToCopy;
-      bufferPosition += bytesToCopy;
-    }
-  }
-
-  private final void switchCurrentBuffer() throws IOException {
-    if (currentBufferIndex == file.numBuffers()) {
-      currentBuffer = file.addBuffer(BUFFER_SIZE);
-    } else {
-      currentBuffer = file.getBuffer(currentBufferIndex);
-    }
-    bufferPosition = 0;
-    bufferStart = (long) BUFFER_SIZE * (long) currentBufferIndex;
-    bufferLength = currentBuffer.length;
-  }
-
-  private void setFileLength() {
-    long pointer = bufferStart + bufferPosition;
-    if (pointer > file.length) {
-      file.setLength(pointer);
-    }
-  }
-
-  @Override
-  public void flush() throws IOException {
-    file.setLastModified(System.currentTimeMillis());
-    setFileLength();
-  }
-
-  @Override
-  public long getFilePointer() {
-    return currentBufferIndex < 0 ? 0 : bufferStart + bufferPosition;
-  }
-
-  /** Returns byte usage of all buffers. */
-  public long sizeInBytes() {
-    return file.numBuffers() * BUFFER_SIZE;
-  }
-  
-  @Override
-  public void copyBytes(DataInput input, long numBytes) throws IOException {
-    assert numBytes >= 0: "numBytes=" + numBytes;
-
-    while (numBytes > 0) {
-      if (bufferPosition == bufferLength) {
-        currentBufferIndex++;
-        switchCurrentBuffer();
-      }
-
-      int toCopy = currentBuffer.length - bufferPosition;
-      if (numBytes < toCopy) {
-        toCopy = (int) numBytes;
-      }
-      input.readBytes(currentBuffer, bufferPosition, toCopy, false);
-      numBytes -= toCopy;
-      bufferPosition += toCopy;
-    }
-
-  }
-  
-}