pylucene 3.5.0-3

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

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/util/StringHelper.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/util/StringHelper.java
deleted file mode 100644 (file)
index 5e29003..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/util/StringHelper.java
+++ /dev/null
@@ -1,98 +0,0 @@
-package org.apache.lucene.util;
-
-import java.util.Comparator;
-import java.util.StringTokenizer;
-
-/**
- * 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.
- */
-
-
-/**
- * Methods for manipulating strings.
- *
- * @lucene.internal
- */
-public abstract class StringHelper {
-  /**
-   * Expert:
-   * The StringInterner implementation used by Lucene.
-   * This shouldn't be changed to an incompatible implementation after other Lucene APIs have been used.
-   */
-  public static StringInterner interner = new SimpleStringInterner(1024,8);
-
-  /** Return the same string object for all equal strings */
-  public static String intern(String s) {
-    return interner.intern(s);
-  }
-
-  /**
-   * Compares two byte[] arrays, element by element, and returns the
-   * number of elements common to both arrays.
-   *
-   * @param bytes1 The first byte[] to compare
-   * @param bytes2 The second byte[] to compare
-   * @return The number of common elements.
-   */
-  public static final int bytesDifference(byte[] bytes1, int len1, byte[] bytes2, int len2) {
-    int len = len1 < len2 ? len1 : len2;
-    for (int i = 0; i < len; i++)
-      if (bytes1[i] != bytes2[i])
-        return i;
-    return len;
-  }
-  
-  private StringHelper() {
-  }
-  
-  /**
-   * @return a Comparator over versioned strings such as X.YY.Z
-   * @lucene.internal
-   */
-  public static Comparator<String> getVersionComparator() {
-    return versionComparator;
-  }
-  
-  private static Comparator<String> versionComparator = new Comparator<String>() {
-    public int compare(String a, String b) {
-      StringTokenizer aTokens = new StringTokenizer(a, ".");
-      StringTokenizer bTokens = new StringTokenizer(b, ".");
-      
-      while (aTokens.hasMoreTokens()) {
-        int aToken = Integer.parseInt(aTokens.nextToken());
-        if (bTokens.hasMoreTokens()) {
-          int bToken = Integer.parseInt(bTokens.nextToken());
-          if (aToken != bToken) {
-            return aToken < bToken ? -1 : 1;
-          }
-        } else {
-          // a has some extra trailing tokens. if these are all zeroes, thats ok.
-          if (aToken != 0) {
-            return 1; 
-          }
-        }
-      }
-      
-      // b has some extra trailing tokens. if these are all zeroes, thats ok.
-      while (bTokens.hasMoreTokens()) {
-        if (Integer.parseInt(bTokens.nextToken()) != 0)
-          return -1;
-      }
-      
-      return 0;
-    }
-  };
-}