Package org.ametys.plugins.contentio.archive

Class ZipEntryHelper

java.lang.Object

org.ametys.plugins.contentio.archive.ZipEntryHelper

public final class ZipEntryHelper
extends Object

Utility class to retrieve Path representing folders or files under a ZIP archive.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ZipEntryHelper()

Method Summary

Modifier and Type	Method	Description
private static FileSystem	_zipFileSystem(Path zipArchivePath)
private static Stream<Path>	_zipFileTree(Path zipArchivePath, Optional<String> startingPath, int maxDepth, BiPredicate<Path,BasicFileAttributes> filter)
static DirectoryStream<Path>	children(Path zipArchivePath, Optional<String> startingPath, DirectoryStream.Filter<? super Path> filter)	Opens a directory, returning a DirectoryStream to iterate over the entries in the directory.
static boolean	zipEntryFileExists(Path zipPath, String zipEntryFilePath)	Checks if the given file entry exists in the ZIP archive.
static InputStream	zipEntryFileInputStream(Path zipPath, String zipEntryFilePath)	Returns an input stream for reading the content of an entry file of a ZIP archive.
static boolean	zipEntryFolderExists(Path zipPath, String zipEntryFolderPath)	Checks if the given folder entry exists in the ZIP archive.
static Path	zipFileRoot(Path zipArchivePath)	Return the Path of the root of the given ZIP archive.
static Stream<Path>	zipFileTree(Path zipArchivePath, Optional<String> startingPath, BiPredicate<Path,BasicFileAttributes> filter)	Returns a Stream that is lazily populated with Path by searching for files in a file tree rooted at a given starting path within the ZIP, or the ZIP root.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ZipEntryHelper

private ZipEntryHelper()

Method Detail

_zipFileSystem

private static FileSystem _zipFileSystem(Path zipArchivePath)
                                  throws IOException

Throws:

IOException

zipFileRoot

public static Path zipFileRoot(Path zipArchivePath)
                        throws IOException

Return the Path of the root of the given ZIP archive.

Parameters:

zipArchivePath - The zip path

Returns:

the PAth of the root

Throws:

IOException - if an I/O error is thrown when accessing a file.

zipFileTree

public static Stream<Path> zipFileTree(Path zipArchivePath,
                                       Optional<String> startingPath,
                                       BiPredicate<Path,BasicFileAttributes> filter)
                                throws IOException

Returns a Stream that is lazily populated with Path by searching for files in a file tree rooted at a given starting path within the ZIP, or the ZIP root.

Parameters:

zipArchivePath - The zip path

startingPath - The (optional) starting path within the ZIP

filter - The filter

Returns:

the Stream of Path

Throws:

IOException - if an I/O error is thrown when accessing a file.

_zipFileTree

private static Stream<Path> _zipFileTree(Path zipArchivePath,
                                         Optional<String> startingPath,
                                         int maxDepth,
                                         BiPredicate<Path,BasicFileAttributes> filter)
                                  throws IOException

Throws:

IOException

children

public static DirectoryStream<Path> children(Path zipArchivePath,
                                             Optional<String> startingPath,
                                             DirectoryStream.Filter<? super Path> filter)
                                      throws IOException

Opens a directory, returning a DirectoryStream to iterate over the entries in the directory.

Parameters:

zipArchivePath - The zip path

startingPath - The (optional) starting path within the ZIP

filter - The filter

Returns:

a new and opened DirectoryStream object

Throws:

IOException - if an I/O error is thrown when accessing a file.

zipEntryFolderExists

public static boolean zipEntryFolderExists(Path zipPath,
                                           String zipEntryFolderPath)
                                    throws IOException

Checks if the given folder entry exists in the ZIP archive.

Parameters:

zipPath - The zip path

zipEntryFolderPath - The path of the folder within the ZIP

Returns:

true if the entry exists

Throws:

IOException - if an I/O error is thrown when accessing a file.

zipEntryFileExists

public static boolean zipEntryFileExists(Path zipPath,
                                         String zipEntryFilePath)
                                  throws IOException

Checks if the given file entry exists in the ZIP archive.

Parameters:

zipPath - The zip path

zipEntryFilePath - The path of the file within the ZIP

Returns:

true if the entry exists

Throws:

IOException - if an I/O error is thrown when accessing a file.

zipEntryFileInputStream

public static InputStream zipEntryFileInputStream(Path zipPath,
                                                  String zipEntryFilePath)
                                           throws IOException

Returns an input stream for reading the content of an entry file of a ZIP archive.
You may check if the entry exist with zipEntryFileExists(java.nio.file.Path, java.lang.String), otherwise you may get an IOException.
It must be closed.

Parameters:

zipPath - The zip path

zipEntryFilePath - The path within the ZIP

Returns:

a new input stream

Throws:

IOException - if an I/O error is thrown when accessing a file.