de.schlichtherle.util.zip.ZIP Maven / Gradle / Ivy
/*
* Copyright (C) 2005-2010 Schlichtherle IT Services
*
* 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.
*/
package de.schlichtherle.util.zip;
/**
* A package private interface with some useful constants for ZIP compatible files.
* Public classes must not implement this interface - otherwise the
* constants become part of the public API.
*
* @author Christian Schlichtherle
* @version $Id$
*/
interface ZIP {
/** Local File Header signature. */
int LFH_SIG = 0x04034B50;
/** Data Descriptor signature. */
int DD_SIG = 0x08074B50;
/** Central File Header signature. */
int CFH_SIG = 0x02014B50;
/**
* This boolean field is set by the system property
* {@code de.schlichtherle.util.zip.zip64ext}.
* If this property is set to {@code true} (case is ignored),
* then ZIP64 extensions are always added when writing a ZIP archive file,
* regardless of its size.
* This system property is intended for testing purposes only.
* During normal operations, it should not be set as many
* third party tools would not treat the redundant ZIP64 extensions
* correctly.
* Note that it's impossible to inhibit ZIP64 extensions.
*/
boolean ZIP64_EXT
= Boolean.getBoolean("de.schlichtherle.util.zip.zip64ext");
/** Zip64 End Of Central Directory Record. */
int ZIP64_EOCDR_SIG = 0x06064b50;
/** Zip64 End Of Central Directory Locator. */
int ZIP64_EOCDL_SIG = 0x07064b50;
/** End Of Central Directory Record signature. */
int EOCDR_SIG = 0x06054B50;
/** The minimum length of the Local File Header record. */
int LFH_MIN_LEN =
/* local file header signature */ 4 +
/* version needed to extract */ 2 +
/* general purpose bit flag */ 2 +
/* compression method */ 2 +
/* last mod file time */ 2 +
/* last mod file date */ 2 +
/* crc-32 */ 4 +
/* compressed size */ 4 +
/* uncompressed size */ 4 +
/* file name length */ 2 +
/* extra field length */ 2;
/** The minimum length of the Central File Header record. */
int CFH_MIN_LEN =
/* central file header signature */ 4 +
/* version made by */ 2 +
/* version needed to extract */ 2 +
/* general purpose bit flag */ 2 +
/* compression method */ 2 +
/* last mod file time */ 2 +
/* last mod file date */ 2 +
/* crc-32 */ 4 +
/* compressed size */ 4 +
/* uncompressed size */ 4 +
/* filename length */ 2 +
/* extra field length */ 2 +
/* file comment length */ 2 +
/* disk number start */ 2 +
/* internal file attributes */ 2 +
/* external file attributes */ 4 +
/* relative offset of local header */ 4;
/** The minimum length of the Zip64 End Of Central Directory Record. */
int ZIP64_EOCDR_MIN_LEN =
/* zip64 end of central dir */
/* signature */ 4 +
/* size of zip64 end of central */
/* directory record */ 8 +
/* version made by */ 2 +
/* version needed to extract */ 2 +
/* number of this disk */ 4 +
/* number of the disk with the */
/* start of the central directory */ 4 +
/* total number of entries in the */
/* central directory on this disk */ 8 +
/* total number of entries in */
/* the central directory */ 8 +
/* size of the central directory */ 8 +
/* offset of start of central */
/* directory with respect to */
/* the starting disk number */ 8;
/** The length of the Zip64 End Of Central Directory Locator. */
int ZIP64_EOCDL_LEN =
/* zip64 end of central dir locator*/
/* signature */ 4 +
/* number of the disk with the */
/* start of the zip64 end of */
/* central directory */ 4 +
/* relative offset of the zip64 */
/* end of central directory record */ 8 +
/* total number of disks */ 4;
/** The minimum length of the End Of Central Directory record. */
int EOCDR_MIN_LEN =
/* end of central dir signature */ 4 +
/* number of this disk */ 2 +
/* number of the disk with the */
/* start of the central directory */ 2 +
/* total number of entries in the */
/* central directory on this disk */ 2 +
/* total number of entries in */
/* the central directory */ 2 +
/* size of the central directory */ 4 +
/* offset of start of central */
/* directory with respect to */
/* the starting disk number */ 4 +
/* zipfile comment length */ 2;
String UTF8 = "UTF-8";
/**
* The default character set used for entry names and comments in ZIP
* compatible files.
* This is {@value} for compatibility with Sun's JDK implementation.
* Note that you should use "IBM437" for ordinary ZIP files
* instead.
*/
String DEFAULT_CHARSET = UTF8;
/**
* The buffer size used for deflating and inflating.
* Optimized for reading and writing flash memory media.
*/
int FLATER_BUF_LENGTH = 64 * 1024;
/** Windows/DOS/FAT platform. */
short PLATFORM_FAT = 0;
/** Unix platform. */
short PLATFORM_UNIX = 3;
/** Compression method for uncompressed (stored) entries. */
int STORED = 0;
/** Compression method for compressed (deflated) entries. */
int DEFLATED = 8;
/** An empty byte array. */
byte[] EMPTY = new byte[0];
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