OpenJDK 27 · jdk.nio.zipfs.ZipFileSystem · APIdia, the JavaDoc alternative

Modifier and Type	Class and Description
private class	ZipFileSystem.DeflatingEntryOutputStream
pack-priv static class	ZipFileSystem.END
pack-priv static class	ZipFileSystem.Entry
private class	ZipFileSystem.EntryInputStream
private class	ZipFileSystem.EntryOutputChannel
private class	ZipFileSystem.EntryOutputStream
private class	ZipFileSystem.EntryOutputStreamCRC32
private class	ZipFileSystem.EntryOutputStreamDef
private class	ZipFileSystem.FileRolloverOutputStream
pack-priv static class	ZipFileSystem.IndexNode
pack-priv static class	ZipFileSystem.ParentLookup
pack-priv class	ZipFileSystem.PosixEntry
private static enum	ZipFileSystem.ZipAccessMode

Field Summary

Modifier and Type	Field and Description
pack-priv final byte[]	cen
private final SeekableByteChannel	ch
private static final String	COMPRESSION_METHOD_DEFLATED
private static final String	COMPRESSION_METHOD_STORED
private final int	defaultCompressionMethod
private final GroupPrincipal	defaultGroup
private final UserPrincipal	defaultOwner
private final Set<PosixFilePermission>	defaultPermissions
private final List<Deflater>	deflaters
private ZipFileSystem.END	end
private Function<byte[], byte[]>	entryLookup
private final boolean	forceEnd64
private static final String	GLOB_SYNTAX
private boolean	hasUpdate
private final List<Inflater>	inflaters
private LinkedHashMap<ZipFileSystem.IndexNode, ZipFileSystem.IndexNode>	inodes
private volatile boolean	isOpen
private static final boolean	isWindows
private long	locpos
private final ZipFileSystem.IndexNode	LOOKUPKEY
private static final int	MAX_CEN_SIZE
private final int	MAX_FLATER
private final boolean	noExtt
private static final String	PROPERTY_ACCESS_MODE
private static final String	PROPERTY_COMPRESSION_METHOD
private static final String	PROPERTY_DEFAULT_GROUP
private static final String	PROPERTY_DEFAULT_OWNER
private static final String	PROPERTY_DEFAULT_PERMISSIONS
private static final String	PROPERTY_MULTI_RELEASE
private static final String	PROPERTY_POSIX
private static final String	PROPERTY_RELEASE_VERSION
private final ZipFileSystemProvider	provider
private boolean	readOnly
private static final String	REGEX_SYNTAX
private final ZipPath	rootdir
private static final byte[]	ROOTPATH
private final ReadWriteLock	rwlock
private Set<InputStream>	streams
private final Set<String>	supportedFileAttributeViews
pack-priv final boolean	supportPosix
private final int	tempFileCreationThreshold
private final Set<Path>	tmppaths
private final boolean	useTempFile
pack-priv final ZipCoder	zc
private final Path	zfpath
private final long	zfsDefaultTimeStamp

Access	Constructor and Description
pack-priv	ZipFileSystem(ZipFileSystemProvider provider, Path zfpath, Map<String, ?> env)

Method Summary

Modifier and Type	Method and Description
private void	beginRead()
private void	beginWrite()
private void	buildNodeTree()
pack-priv void	checkAccess(byte[] path)
private final void	checkEncoding(byte[] a)
private void	checkExtraFields(byte[] CEN array cen, int starting offset in the CEN for the Extra field cenPos, long CEN size value size, long CEN csize value csize, long CEN LOC offset value locoff, int CEN Disk number value diskNo, int Extra Field starting offset within the CEN startingOffset, int Length of this Extra field extraFieldLen) Validate the Zip64 Extra block fields
private void	checkOptions(Set<? extends OpenOption> options)
private void	checkParents(byte[] path)
private final void	checkUTF8(byte[] a)
private void	checkWritable()
private void	checkZip64ExtraFieldValues(byte[] CEN array cen, int the starting offset for the Zip64 field value off, int the size of the Zip64 Extended Extra Field blockSize, long CEN header compressed size value csize, long CEN header uncompressed size value size, long CEN header LOC offset locoff, int CEN header Disk Number diskNo) Validate the Zip64 Extended Information Extra Field (0x0001) block size; that the uncompressed size, compressed size field and LOC offset fields are not negative.
public void	close() Implements abstract java.nio.file.FileSystem.close. Implements java.io.Closeable.close. Closes this file system.
pack-priv void	copyFile(boolean deletesrc, byte[] src, byte[] dst, CopyOption... options)
private long	copyLOCEntry(ZipFileSystem.Entry e, boolean updateHeader, OutputStream os, long written, byte[] buf)
pack-priv void	createDirectory(byte[] dir, FileAttribute<?>... attrs)
private Path	createTempFileInSameDirectoryAs(Path path)
private Function<byte[], byte[]>	createVersionedLinks(int version) Create a map of aliases for versioned entries, for example: version/PackagePrivate.class -> META-INF/versions/9/version/PackagePrivate.class version/PackagePrivate.java -> META-INF/versions/9/version/PackagePrivate.java version/Version.class -> META-INF/versions/10/version/Version.class version/Version.java -> META-INF/versions/10/version/Version.java Then wrap the map in a function that getEntry can use to override root entry lookup for entries that have corresponding versioned entries.
public void	deleteFile(byte[] path, boolean failIfNotExists)
private Optional<Integer>	determineReleaseVersion(Map<String, ?> env) If a version property has been specified and the file represents a multi-release JAR, determine the requested runtime version and initialize the ZipFileSystem instance accordingly.
private void	endRead()
private void	endWrite()
private void	ensureOpen()
pack-priv boolean	exists(byte[] path)
protected void	finalize() Overrides java.lang.Object.finalize. Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
private ZipFileSystem.END	findEND()
pack-priv final byte[]	getBytes(String name)
private int	Returns: The Compression method to use getDefaultCompressionMethod(Map<String, ?> Zip FS map of properties env) Return the compression method to use (STORED or DEFLATED).
private Deflater	getDeflater()
private ZipFileSystem.Entry	getEntry(byte[] path)
pack-priv ZipFileAttributes	getFileAttributes(byte[] path)
pack-priv FileStore	getFileStore(ZipPath path)
public Iterable<FileStore>	getFileStores() Implements abstract java.nio.file.FileSystem.getFileStores. Returns an object to iterate over the underlying file stores.
private Inflater	getInflater()
private ZipFileSystem.IndexNode	getInode(byte[] path)
private InputStream	getInputStream(ZipFileSystem.Entry e)
private ZipFileSystem.IndexNode	getOrCreateInode(byte[] path, boolean isdir) Return the IndexNode from the root tree.
private OutputStream	getOutputStream(ZipFileSystem.Entry e)
private static byte[]	getParent(byte[] path)
private static int	getParentOff(byte[] path)
public ZipPath	getPath(String first, String... more) Implements abstract java.nio.file.FileSystem.getPath. Converts a path string, or a sequence of strings that when joined form a path string, to a `Path`.
public PathMatcher	getPathMatcher(String syntaxAndInput) Implements abstract java.nio.file.FileSystem.getPathMatcher. Returns a `PathMatcher` that performs match operations on the `String` representation of `Path` objects by interpreting a given pattern.
private PosixFileAttributes	Returns: The POSIX file attributes for the specified file or null if the POSIX attribute view is not available getPosixAttributes(Path The path to the file path) Returns a file's POSIX file attributes.
pack-priv ZipPath	getRootDir()
public Iterable<Path>	getRootDirectories() Implements abstract java.nio.file.FileSystem.getRootDirectories. Returns an object to iterate over the paths of the root directories.
private byte[]	getRootName(ZipFileSystem.IndexNode inode, ZipFileSystem.IndexNode prefix) Extract the root name from a versioned entry name.
public String	getSeparator() Implements abstract java.nio.file.FileSystem.getSeparator. Returns the name separator, represented as a string.
pack-priv final String	getString(byte[] name)
private Path	getTempPathForEntry(byte[] path)
public UserPrincipalLookupService	getUserPrincipalLookupService() Implements abstract java.nio.file.FileSystem.getUserPrincipalLookupService. Returns the `UserPrincipalLookupService` for this file system (optional operation).
private Integer	getVersion(ZipFileSystem.IndexNode inode, ZipFileSystem.IndexNode metaInfVersions) Extract the integer version number -- META-INF/versions/9 returns 9.
private TreeMap<Integer, ZipFileSystem.IndexNode>	getVersionMap(int version, ZipFileSystem.IndexNode metaInfVersions) Create a sorted version map of version -> inode, for inodes <= max version.
pack-priv Path	getZipFile()
private byte[]	initCEN()
private GroupPrincipal	initGroup(Path zfpath, Map<String, ?> env)
private UserPrincipal	initOwner(Path zfpath, Map<String, ?> env)
private Set<PosixFilePermission>	initPermissions(Map<String, ?> env)
pack-priv boolean	isDirectory(byte[] path)
private boolean	isMultiReleaseJar() Returns true if the Manifest main attribute "Multi-Release" is set to true; false otherwise.
public boolean	isOpen() Implements abstract java.nio.file.FileSystem.isOpen. Tells whether or not this file system is open.
public boolean	isReadOnly() Implements abstract java.nio.file.FileSystem.isReadOnly. Tells whether or not this file system allows only read-only access to its file stores.
private static boolean	isTrue(Map<String, ?> env, String name)
private static boolean	Returns: true if the extra block size is valid; false otherwise isZip64ExtBlockSizeValid(int the Zip64 Extended Information Extra Field size blockSize, long CEN header compressed size value csize, long CEN header uncompressed size value size, long CEN header LOC offset locoff, int CEN header Disk Number diskNo) Validate the size and contents of a Zip64 extended information field The order of the Zip64 fields is fixed, but the fields MUST only appear if the corresponding LOC or CEN field is set to 0xFFFF: or 0xFFFFFFFF: Uncompressed Size - 8 bytes Compressed Size - 8 bytes LOC Header offset - 8 bytes Disk Start Number - 4 bytes See PKWare APP.Note Section 4.5.3 for more details
pack-priv Iterator<Path>	iteratorOf(ZipPath dir, DirectoryStream.Filter<? super Path> filter)
pack-priv byte[]	lookupPath(byte[] resolvedPath) Package-private accessor to entry alias map used by ZipPath.
private void	makeParentDirs(ZipFileSystem.IndexNode node, ZipFileSystem.IndexNode root)
pack-priv SeekableByteChannel	newByteChannel(byte[] path, Set<? extends OpenOption> options, FileAttribute<?>... attrs)
pack-priv FileChannel	newFileChannel(byte[] path, Set<? extends OpenOption> options, FileAttribute<?>... attrs)
pack-priv InputStream	newInputStream(byte[] path)
pack-priv OutputStream	newOutputStream(byte[] path, OpenOption... options)
public WatchService	newWatchService() Implements abstract java.nio.file.FileSystem.newWatchService. Constructs a new `WatchService` (optional operation).
public FileSystemProvider	provider() Implements abstract java.nio.file.FileSystem.provider. Returns the provider that created this file system.
private int	readAt(ByteBuffer bb, long pos)
pack-priv final long	readNBytesAt(byte[] buf, int off, long len, long pos) Reads len bytes of data at the given file position into the given byte array starting at the given array offset.
private void	releaseDeflater(Deflater def)
private void	releaseInflater(Inflater inf)
private void	removeFromTree(ZipFileSystem.IndexNode inode)
private void	removeTempPathForEntry(Path path)
pack-priv void	setGroup(byte[] path, GroupPrincipal group)
pack-priv void	setOwner(byte[] path, UserPrincipal owner)
pack-priv void	setPermissions(byte[] path, Set<PosixFilePermission> perms)
pack-priv void	setTimes(byte[] path, FileTime mtime, FileTime atime, FileTime ctime)
public Set<String>	supportedFileAttributeViews() Implements abstract java.nio.file.FileSystem.supportedFileAttributeViews. Returns the set of the `names` of the file attribute views supported by this `FileSystem`.
private void	sync()
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.
private void	update(ZipFileSystem.Entry e)
private void	updateDelete(ZipFileSystem.IndexNode inode)
private void	walk(ZipFileSystem.IndexNode inode, Consumer<ZipFileSystem.IndexNode> consumer) Walk the IndexNode tree processing all leaf nodes.
private long	writeEntry(ZipFileSystem.Entry e, OutputStream os)
private void	writeTo(ZipFileSystem.Entry e, OutputStream os)
private static void	zerror(String msg)

pack-priv Class ZipFileSystem

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary