| /* |
| * 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. |
| */ |
| package org.apache.commons.compress.archivers.ar; |
| |
| import java.io.File; |
| import java.util.Date; |
| |
| import org.apache.commons.compress.archivers.ArchiveEntry; |
| |
| /** |
| * Represents an archive entry in the "ar" format. |
| * |
| * Each AR archive starts with "!<arch>" followed by a LF. After these 8 bytes |
| * the archive entries are listed. The format of an entry header is as it follows: |
| * |
| * <pre> |
| * START BYTE END BYTE NAME FORMAT LENGTH |
| * 0 15 File name ASCII 16 |
| * 16 27 Modification timestamp Decimal 12 |
| * 28 33 Owner ID Decimal 6 |
| * 34 39 Group ID Decimal 6 |
| * 40 47 File mode Octal 8 |
| * 48 57 File size (bytes) Decimal 10 |
| * 58 59 File magic \140\012 2 |
| * </pre> |
| * |
| * This specifies that an ar archive entry header contains 60 bytes. |
| * |
| * Due to the limitation of the file name length to 16 bytes GNU and BSD has |
| * their own variants of this format. This formats are currently not supported |
| * and file names with a bigger size than 16 bytes are not possible at the |
| * moment. |
| * |
| * @Immutable |
| */ |
| public class ArArchiveEntry implements ArchiveEntry { |
| |
| /** The header for each entry */ |
| public static final String HEADER = "!<arch>\n"; |
| |
| /** The trailer for each entry */ |
| public static final String TRAILER = "`\012"; |
| |
| /** |
| * SVR4/GNU adds a trailing / to names; BSD does not. |
| * They also vary in how names longer than 16 characters are represented. |
| * (Not yet supported by this implementation) |
| */ |
| private final String name; |
| private final int userId; |
| private final int groupId; |
| private final int mode; |
| private static final int DEFAULT_MODE = 33188; // = (octal) 0100644 |
| private final long lastModified; |
| private final long length; |
| |
| public ArArchiveEntry(String name, long length) { |
| this(name, length, 0, 0, DEFAULT_MODE, System.currentTimeMillis()); |
| } |
| |
| public ArArchiveEntry(String name, long length, int userId, int groupId, int mode, long lastModified) { |
| this.name = name; |
| this.length = length; |
| this.userId = userId; |
| this.groupId = groupId; |
| this.mode = mode; |
| this.lastModified = lastModified; |
| } |
| |
| public ArArchiveEntry(File inputFile, String entryName) { |
| // TODO sort out mode |
| this(entryName, inputFile.isFile() ? inputFile.length() : 0, 0, 0, 0, inputFile.lastModified()); |
| } |
| |
| public long getSize() { |
| return this.getLength(); |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public int getUserId() { |
| return userId; |
| } |
| |
| public int getGroupId() { |
| return groupId; |
| } |
| |
| public int getMode() { |
| return mode; |
| } |
| |
| public long getLastModified() { |
| return lastModified; |
| } |
| |
| /** {@inheritDocs} */ |
| public Date getLastModifiedDate() { |
| return new Date(1000 * getLastModified()); |
| } |
| |
| public long getLength() { |
| return length; |
| } |
| |
| public boolean isDirectory() { |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((name == null) ? 0 : name.hashCode()); |
| return result; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj == null || getClass() != obj.getClass()) { |
| return false; |
| } |
| ArArchiveEntry other = (ArArchiveEntry) obj; |
| if (name == null) { |
| if (other.name != null) { |
| return false; |
| } |
| } else if (!name.equals(other.name)) { |
| return false; |
| } |
| return true; |
| } |
| } |