pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / src / java / org / apache / lucene / util / fst / ByteSequenceOutputs.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/util/fst/ByteSequenceOutputs.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/util/fst/ByteSequenceOutputs.java
deleted file mode 100644 (file)
index 8969090..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/util/fst/ByteSequenceOutputs.java
+++ /dev/null
@@ -1,138 +0,0 @@
-package org.apache.lucene.util.fst;
-
-/**
- * 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;
-
-import org.apache.lucene.store.DataInput;
-import org.apache.lucene.store.DataOutput;
-import org.apache.lucene.util.BytesRef;
-
-/**
- * Output is a sequence of bytes, for each input term.
- *
- * @lucene.experimental
- */
-
-public final class ByteSequenceOutputs extends Outputs<BytesRef> {
-
-  private final static BytesRef NO_OUTPUT = new BytesRef();
-
-  private ByteSequenceOutputs() {
-  }
-
-  public static ByteSequenceOutputs getSingleton() {
-    return new ByteSequenceOutputs();
-  }
-
-  @Override
-  public BytesRef common(BytesRef output1, BytesRef output2) {
-    assert output1 != null;
-    assert output2 != null;
-
-    int pos1 = output1.offset;
-    int pos2 = output2.offset;
-    int stopAt1 = pos1 + Math.min(output1.length, output2.length);
-    while(pos1 < stopAt1) {
-      if (output1.bytes[pos1] != output2.bytes[pos2]) {
-        break;
-      }
-      pos1++;
-      pos2++;
-    }
-
-    if (pos1 == output1.offset) {
-      // no common prefix
-      return NO_OUTPUT;
-    } else if (pos1 == output1.offset + output1.length) {
-      // output1 is a prefix of output2
-      return output1;
-    } else if (pos2 == output2.offset + output2.length) {
-      // output2 is a prefix of output1
-      return output2;
-    } else {
-      return new BytesRef(output1.bytes, output1.offset, pos1-output1.offset);
-    }
-  }
-
-  @Override
-  public BytesRef subtract(BytesRef output, BytesRef inc) {
-    assert output != null;
-    assert inc != null;
-    if (inc == NO_OUTPUT) {
-      // no prefix removed
-      return output;
-    } else if (inc.length == output.length) {
-      // entire output removed
-      return NO_OUTPUT;
-    } else {
-      assert inc.length < output.length: "inc.length=" + inc.length + " vs output.length=" + output.length;
-      assert inc.length > 0;
-      return new BytesRef(output.bytes, output.offset + inc.length, output.length-inc.length);
-    }
-  }
-
-  @Override
-  public BytesRef add(BytesRef prefix, BytesRef output) {
-    assert prefix != null;
-    assert output != null;
-    if (prefix == NO_OUTPUT) {
-      return output;
-    } else if (output == NO_OUTPUT) {
-      return prefix;
-    } else {
-      assert prefix.length > 0;
-      assert output.length > 0;
-      BytesRef result = new BytesRef(prefix.length + output.length);
-      System.arraycopy(prefix.bytes, prefix.offset, result.bytes, 0, prefix.length);
-      System.arraycopy(output.bytes, output.offset, result.bytes, prefix.length, output.length);
-      result.length = prefix.length + output.length;
-      return result;
-    }
-  }
-
-  @Override
-  public void write(BytesRef prefix, DataOutput out) throws IOException {
-    assert prefix != null;
-    out.writeVInt(prefix.length);
-    out.writeBytes(prefix.bytes, prefix.offset, prefix.length);
-  }
-
-  @Override
-  public BytesRef read(DataInput in) throws IOException {
-    final int len = in.readVInt();
-    if (len == 0) {
-      return NO_OUTPUT;
-    } else {
-      final BytesRef output = new BytesRef(len);
-      in.readBytes(output.bytes, 0, len);
-      output.length = len;
-      return output;
-    }
-  }
-
-  @Override
-  public BytesRef getNoOutput() {
-    return NO_OUTPUT;
-  }
-
-  @Override
-  public String outputToString(BytesRef output) {
-    return output.utf8ToString();
-  }
-}