pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / analyzers / common / src / java / org / apache / lucene / analysis / fa / PersianCharFilter.java

diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/fa/PersianCharFilter.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/fa/PersianCharFilter.java
new file mode 100644 (file)
index 0000000..03a6996
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+++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/fa/PersianCharFilter.java
@@ -0,0 +1,48 @@
+package org.apache.lucene.analysis.fa;
+
+/**
+ * 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.analysis.CharStream;
+import org.apache.lucene.analysis.CharFilter;
+
+/**
+ * CharFilter that replaces instances of Zero-width non-joiner with an
+ * ordinary space.
+ */
+public class PersianCharFilter extends CharFilter {
+
+  public PersianCharFilter(CharStream in) {
+    super(in);
+  }
+  
+  @Override
+  public int read(char[] cbuf, int off, int len) throws IOException {
+    final int charsRead = super.read(cbuf, off, len);
+    if (charsRead > 0) {
+      final int end = off + charsRead;
+      while (off < end) {
+        if (cbuf[off] == '\u200C')
+          cbuf[off] = ' ';
+        off++;
+      }
+    }
+    return charsRead;
+  }
+}