    001/*
    002 *  Licensed to the Apache Software Foundation (ASF) under one or more
    003 *  contributor license agreements.  See the NOTICE file distributed with
    004 *  this work for additional information regarding copyright ownership.
    005 *  The ASF licenses this file to You under the Apache License, Version 2.0
    006 *  (the "License"); you may not use this file except in compliance with
    007 *  the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 *  Unless required by applicable law or agreed to in writing, software
    012 *  distributed under the License is distributed on an "AS IS" BASIS,
    013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 *  See the License for the specific language governing permissions and
    015 *  limitations under the License.
    016 *
    017 */
    018
    019package org.apache.commons.compress.archivers.zip;
    020
    021import java.util.zip.ZipException;
    022
    023/**
    024 * Exception thrown when attempting to read or write data for a zip
    025 * entry that uses ZIP features not supported by this library.
    026 * @since 1.1
    027 */
    028public class UnsupportedZipFeatureException extends ZipException {
    029
    030    private final Feature reason;
    031    private transient final ZipArchiveEntry entry;
    032    private static final long serialVersionUID = 20161219L;
    033
    034    /**
    035     * Creates an exception.
    036     * @param reason the feature that is not supported
    037     * @param entry the entry using the feature
    038     */
    039    public UnsupportedZipFeatureException(final Feature reason,
    040                                          final ZipArchiveEntry entry) {
    041        super("Unsupported feature " + reason +  " used in entry "
    042              + entry.getName());
    043        this.reason = reason;
    044        this.entry = entry;
    045    }
    046
    047    /**
    048     * Creates an exception for archives that use an unsupported
    049     * compression algorithm.
    050     * @param method the method that is not supported
    051     * @param entry the entry using the feature
    052     * @since 1.5
    053     */
    054    public UnsupportedZipFeatureException(final ZipMethod method,
    055                                          final ZipArchiveEntry entry) {
    056        super("Unsupported compression method " + entry.getMethod()
    057              + " (" + method.name() + ") used in entry " + entry.getName());
    058        this.reason = Feature.METHOD;
    059        this.entry = entry;
    060    }
    061
    062    /**
    063     * Creates an exception when the whole archive uses an unsupported
    064     * feature.
    065     *
    066     * @param reason the feature that is not supported
    067     * @since 1.5
    068     */
    069    public UnsupportedZipFeatureException(final Feature reason) {
    070        super("Unsupported feature " + reason +  " used in archive.");
    071        this.reason = reason;
    072        this.entry = null;
    073    }
    074
    075    /**
    076     * The unsupported feature that has been used.
    077     * @return The unsupported feature that has been used.
    078     */
    079    public Feature getFeature() {
    080        return reason;
    081    }
    082
    083    /**
    084     * The entry using the unsupported feature.
    085     * @return The entry using the unsupported feature.
    086     */
    087    public ZipArchiveEntry getEntry() {
    088        return entry;
    089    }
    090
    091    /**
    092     * ZIP Features that may or may not be supported.
    093     * @since 1.1
    094     */
    095    public static class Feature implements java.io.Serializable {
    096
    097        private static final long serialVersionUID = 4112582948775420359L;
    098        /**
    099         * The entry is encrypted.
    100         */
    101        public static final Feature ENCRYPTION = new Feature("encryption");
    102        /**
    103         * The entry used an unsupported compression method.
    104         */
    105        public static final Feature METHOD = new Feature("compression method");
    106        /**
    107         * The entry uses a data descriptor.
    108         */
    109        public static final Feature DATA_DESCRIPTOR = new Feature("data descriptor");
    110        /**
    111         * The archive uses splitting or spanning.
    112         * @since 1.5
    113         */
    114        public static final Feature SPLITTING = new Feature("splitting");
    115        /**
    116         * The archive contains entries with unknown compressed size
    117         * for a compression method that doesn't support detection of
    118         * the end of the compressed stream.
    119         * @since 1.16
    120         */
    121        public static final Feature UNKNOWN_COMPRESSED_SIZE = new Feature("unknown compressed size");
    122
    123        private final String name;
    124
    125        private Feature(final String name) {
    126            this.name = name;
    127        }
    128
    129        @Override
    130        public String toString() {
    131            return name;
    132        }
    133    }
    134}