| /* |
| * 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 |
| * |
| * https://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. |
| * |
| */ |
| package org.apache.directory.api.ldap.model.schema.normalizers; |
| |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.directory.api.ldap.model.schema.Normalizer; |
| import org.apache.directory.api.ldap.model.schema.PrepareString; |
| |
| |
| /** |
| * A Normalizer that uses Perl5 based regular expressions to normalize values. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| @SuppressWarnings("serial") |
| public class RegexNormalizer extends Normalizer |
| { |
| /** the perl 5 regex engine */ |
| private final Pattern[] regexes; |
| |
| /** the set of regular expressions used to transform values */ |
| private final transient Matcher[] matchers; |
| |
| |
| /** |
| * Creates a Perl5 regular expression based normalizer. |
| * |
| * @param oid The MR OID to use for this Normalizer |
| * @param regexes the set of regular expressions used to transform values |
| */ |
| public RegexNormalizer( String oid, Pattern[] regexes ) |
| { |
| super( oid ); |
| if ( regexes != null ) |
| { |
| this.regexes = new Pattern[regexes.length]; |
| System.arraycopy( regexes, 0, this.regexes, 0, regexes.length ); |
| |
| matchers = new Matcher[regexes.length]; |
| |
| for ( int i = 0; i < regexes.length; i++ ) |
| { |
| matchers[i] = regexes[i].matcher( "" ); |
| } |
| } |
| else |
| { |
| this.regexes = null; |
| matchers = new Matcher[0]; |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String normalize( String value ) |
| { |
| return normalize( value, PrepareString.AssertionType.ATTRIBUTE_VALUE ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String normalize( String value, PrepareString.AssertionType assertionType ) |
| { |
| if ( value == null ) |
| { |
| return null; |
| } |
| |
| String str = value; |
| |
| for ( int i = 0; i < matchers.length; i++ ) |
| { |
| str = matchers[i].replaceAll( str ); |
| } |
| |
| return str; |
| } |
| |
| |
| /** |
| * @see java.lang.Object#toString() |
| */ |
| @Override |
| public String toString() |
| { |
| StringBuilder buf = new StringBuilder(); |
| buf.append( "RegexNormalizer( " ); |
| |
| for ( int i = 0; i < regexes.length; i++ ) |
| { |
| buf.append( regexes[i] ); |
| |
| if ( i < regexes.length - 1 ) |
| { |
| buf.append( ", " ); |
| } |
| } |
| |
| buf.append( " )" ); |
| return buf.toString(); |
| } |
| } |