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/*
 * Copyright  2000-2002,2004 The Apache Software Foundation
 *
 *  Licensed 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.
 *
 */

/*
 * This package is based on the work done by Timothy Gerard Endres
 * ([email protected]) to whom the Ant project is very grateful for his great code.
 */

package org.apache.tools.tar;

/**
 * This interface contains all the definitions used in the package.
 *
 */

public interface TarConstants {

    /**
     * The length of the name field in a header buffer.
     */
    int    NAMELEN = 100;

    /**
     * The length of the mode field in a header buffer.
     */
    int    MODELEN = 8;

    /**
     * The length of the user id field in a header buffer.
     */
    int    UIDLEN = 8;

    /**
     * The length of the group id field in a header buffer.
     */
    int    GIDLEN = 8;

    /**
     * The length of the checksum field in a header buffer.
     */
    int    CHKSUMLEN = 8;

    /**
     * The length of the size field in a header buffer.
     */
    int    SIZELEN = 12;

    /**
     * The length of the magic field in a header buffer.
     */
    int    MAGICLEN = 8;

    /**
     * The length of the modification time field in a header buffer.
     */
    int    MODTIMELEN = 12;

    /**
     * The length of the user name field in a header buffer.
     */
    int    UNAMELEN = 32;

    /**
     * The length of the group name field in a header buffer.
     */
    int    GNAMELEN = 32;

    /**
     * The length of the devices field in a header buffer.
     */
    int    DEVLEN = 8;

    /**
     * LF_ constants represent the "link flag" of an entry, or more commonly,
     * the "entry type". This is the "old way" of indicating a normal file.
     */
    byte   LF_OLDNORM = 0;

    /**
     * Normal file type.
     */
    byte   LF_NORMAL = (byte) '0';

    /**
     * Link file type.
     */
    byte   LF_LINK = (byte) '1';

    /**
     * Symbolic link file type.
     */
    byte   LF_SYMLINK = (byte) '2';

    /**
     * Character device file type.
     */
    byte   LF_CHR = (byte) '3';

    /**
     * Block device file type.
     */
    byte   LF_BLK = (byte) '4';

    /**
     * Directory file type.
     */
    byte   LF_DIR = (byte) '5';

    /**
     * FIFO (pipe) file type.
     */
    byte   LF_FIFO = (byte) '6';

    /**
     * Contiguous file type.
     */
    byte   LF_CONTIG = (byte) '7';

    /**
     * The magic tag representing a POSIX tar archive.
     */
    String TMAGIC = "ustar";

    /**
     * The magic tag representing a GNU tar archive.
     */
    String GNU_TMAGIC = "ustar  ";

    /**
     * The namr of the GNU tar entry which contains a long name.
     */
    String GNU_LONGLINK = "././@LongLink";

    /**
     * Identifies the *next* file on the tape as having a long name.
     */
    byte LF_GNUTYPE_LONGNAME = (byte) 'L';
}