1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * https://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 * 19 */ 20 package org.apache.directory.api.asn1.ber.tlv; 21 22 23 import org.apache.directory.api.i18n.I18n; 24 import org.apache.directory.api.util.Strings; 25 import org.slf4j.Logger; 26 import org.slf4j.LoggerFactory; 27 28 29 /** 30 * Parse and decode a Boolean value. 31 * 32 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 33 */ 34 public final class BooleanDecoder 35 { 36 /** The logger */ 37 private static final Logger LOG = LoggerFactory.getLogger( BooleanDecoder.class ); 38 39 40 private BooleanDecoder() 41 { 42 } 43 44 /** 45 * Parse a Value containing a byte[] and send back a boolean. 46 * 47 * @param value The Value to parse 48 * @return A boolean. 49 * @throws BooleanDecoderException Thrown if the Value does not contains a boolean 50 */ 51 public static boolean parse( BerValue value ) throws BooleanDecoderException 52 { 53 byte[] bytes = value.getData(); 54 55 if ( Strings.isEmpty( bytes ) ) 56 { 57 throw new BooleanDecoderException( I18n.err( I18n.ERR_01302_0_BYTES_LONG_BOOLEAN ) ); 58 } 59 60 if ( bytes.length != 1 ) 61 { 62 throw new BooleanDecoderException( I18n.err( I18n.ERR_01303_N_BYTES_LONG_BOOLEAN ) ); 63 } 64 65 if ( ( bytes[0] != 0 ) && ( bytes[0] != ( byte ) 0xFF ) ) 66 { 67 if ( LOG.isWarnEnabled() ) 68 { 69 LOG.warn( I18n.msg( I18n.MSG_01300_BOOLEAN_0X00_0XFF ) ); 70 } 71 } 72 73 return bytes[0] != 0; 74 } 75 }