Package net.lingala.zip4j.util

Class Zip4jUtil

java.lang.Object

net.lingala.zip4j.util.Zip4jUtil

public class Zip4jUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
Zip4jUtil()

Method Summary

Modifier and Type	Method	Description
static boolean	checkArrayListTypes(ArrayList sourceList, int type)	Checks to see if all the elements in the arraylist match the given type
static boolean	checkFileExists(File file)
static boolean	checkFileExists(String path)
static boolean	checkFileReadAccess(String path)
static boolean	checkFileWriteAccess(String path)
static boolean	checkOutputFolder(String path)
static byte[]	convertCharset(String str)
static String	decodeFileName(byte[] data, boolean isUTF8)	Decodes file name based on encoding.
static String	detectCharSet(String str)	Detects the encoding charset for the input string
static long	dosToJavaTme(int dosTime)	Converts time in dos format to Java format
static String	getAbsoluteFilePath(String filePath)	Returns an absoulte path for the given file path
static long[]	getAllHeaderSignatures()
static String	getCp850EncodedString(byte[] data)	Returns a string in Cp850 encoding from the input bytes.
static int	getEncodedStringLength(String str)	returns the length of the string by wrapping it in a byte buffer with the appropriate charset of the input string and returns the limit of the byte buffer
static int	getEncodedStringLength(String str, String charset)	returns the length of the string in the input encoding
static FileHeader	getFileHeader(ZipModel zipModel, String fileName)
static FileHeader	getFileHeaderWithExactMatch(ZipModel zipModel, String fileName)
static long	getFileLengh(File file)
static long	getFileLengh(String file)
static String	getFileNameFromFilePath(File file)
static ArrayList	getFilesInDirectoryRec(File path, boolean readHiddenFiles)
static int	getIndexOfFileHeader(ZipModel zipModel, FileHeader fileHeader)
static long	getLastModifiedFileTime(File file, TimeZone timeZone)
static String	getRelativeFileName(String file, String rootFolderInZip, String rootFolderPath)
static ArrayList	getSplitZipFiles(ZipModel zipModel)
static String	getZipFileNameWithoutExt(String zipFile)
static boolean	isStringNotNullAndNotEmpty(String str)
static boolean	isSupportedCharset(String charset)	Checks if the input charset is supported
static boolean	isWindows()
static long	javaToDosTime(long time)	Converts input time from Java to DOS format
static void	setFileArchive(File file)
static void	setFileHidden(File file)
static void	setFileReadOnly(File file)
static void	setFileSystemMode(File file)

Methods inherited from class java.lang.Object

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

Constructor Detail

Zip4jUtil

public Zip4jUtil()

Method Detail

isStringNotNullAndNotEmpty

public static boolean isStringNotNullAndNotEmpty(String str)

checkOutputFolder

public static boolean checkOutputFolder(String path)
                                 throws ZipException

Throws:

ZipException

checkFileReadAccess

public static boolean checkFileReadAccess(String path)
                                   throws ZipException

Throws:

ZipException

checkFileWriteAccess

public static boolean checkFileWriteAccess(String path)
                                    throws ZipException

Throws:

ZipException

checkFileExists

public static boolean checkFileExists(String path)
                               throws ZipException

Throws:

ZipException

checkFileExists

public static boolean checkFileExists(File file)
                               throws ZipException

Throws:

ZipException

isWindows

public static boolean isWindows()

setFileReadOnly

public static void setFileReadOnly(File file)
                            throws ZipException

Throws:

ZipException

setFileHidden

public static void setFileHidden(File file)
                          throws ZipException

Throws:

ZipException

setFileArchive

public static void setFileArchive(File file)
                           throws ZipException

Throws:

ZipException

setFileSystemMode

public static void setFileSystemMode(File file)
                              throws ZipException

Throws:

ZipException

getLastModifiedFileTime

public static long getLastModifiedFileTime(File file,
                                           TimeZone timeZone)
                                    throws ZipException

Throws:

ZipException

getFileNameFromFilePath

public static String getFileNameFromFilePath(File file)
                                      throws ZipException

Throws:

ZipException

getFileLengh

public static long getFileLengh(String file)
                         throws ZipException

Throws:

ZipException

getFileLengh

public static long getFileLengh(File file)
                         throws ZipException

Throws:

ZipException

javaToDosTime

public static long javaToDosTime(long time)

Converts input time from Java to DOS format

Parameters:

time -

Returns:

time in DOS format

dosToJavaTme

public static long dosToJavaTme(int dosTime)

Converts time in dos format to Java format

Parameters:

dosTime -

Returns:

time in java format

getFileHeader

public static FileHeader getFileHeader(ZipModel zipModel,
                                       String fileName)
                                throws ZipException

Throws:

ZipException

getFileHeaderWithExactMatch

public static FileHeader getFileHeaderWithExactMatch(ZipModel zipModel,
                                                     String fileName)
                                              throws ZipException

Throws:

ZipException

getIndexOfFileHeader

public static int getIndexOfFileHeader(ZipModel zipModel,
                                       FileHeader fileHeader)
                                throws ZipException

Throws:

ZipException

getFilesInDirectoryRec

public static ArrayList getFilesInDirectoryRec(File path,
                                               boolean readHiddenFiles)
                                        throws ZipException

Throws:

ZipException

getZipFileNameWithoutExt

public static String getZipFileNameWithoutExt(String zipFile)
                                       throws ZipException

Throws:

ZipException

convertCharset

public static byte[] convertCharset(String str)
                             throws ZipException

Throws:

ZipException

decodeFileName

public static String decodeFileName(byte[] data,
                                    boolean isUTF8)

Decodes file name based on encoding. If file name is UTF 8 encoded returns an UTF8 encoded string, else return Cp850 encoded String. If appropriate charset is not supported, then returns a System default charset encoded String

Parameters:

data -

isUTF8 -

Returns:

String

getCp850EncodedString

public static String getCp850EncodedString(byte[] data)

Returns a string in Cp850 encoding from the input bytes. If this encoding is not supported, then String with the default encoding is returned.

Parameters:

data -

Returns:

String

getAbsoluteFilePath

public static String getAbsoluteFilePath(String filePath)
                                  throws ZipException

Returns an absoulte path for the given file path

Parameters:

filePath -

Returns:

String

Throws:

ZipException

checkArrayListTypes

public static boolean checkArrayListTypes(ArrayList sourceList,
                                          int type)
                                   throws ZipException

Checks to see if all the elements in the arraylist match the given type

Parameters:

sourceList - - list to be checked

type - - type of elements to be present in the list (ex: File, String, etc)

Returns:

true if all elements match the given type, if not returns false

Throws:

ZipException

detectCharSet

public static String detectCharSet(String str)
                            throws ZipException

Detects the encoding charset for the input string

Parameters:

str -

Returns:

String - charset for the String

Throws:

ZipException - - if input string is null. In case of any other exception this method returns default System charset

getEncodedStringLength

public static int getEncodedStringLength(String str)
                                  throws ZipException

returns the length of the string by wrapping it in a byte buffer with the appropriate charset of the input string and returns the limit of the byte buffer

Parameters:

str -

Returns:

length of the string

Throws:

ZipException

getEncodedStringLength

public static int getEncodedStringLength(String str,
                                         String charset)
                                  throws ZipException

returns the length of the string in the input encoding

Parameters:

str -

charset -

Returns:

int

Throws:

ZipException

isSupportedCharset

public static boolean isSupportedCharset(String charset)
                                  throws ZipException

Checks if the input charset is supported

Parameters:

charset -

Returns:

boolean

Throws:

ZipException

getSplitZipFiles

public static ArrayList getSplitZipFiles(ZipModel zipModel)
                                  throws ZipException

Throws:

ZipException

getRelativeFileName

public static String getRelativeFileName(String file,
                                         String rootFolderInZip,
                                         String rootFolderPath)
                                  throws ZipException

Throws:

ZipException

getAllHeaderSignatures

public static long[] getAllHeaderSignatures()