Class X7875_NewUnix
java.lang.Object
org.apache.commons.compress.archivers.zip.X7875_NewUnix
- All Implemented Interfaces:
Serializable,Cloneable,ZipExtraField
An extra field that stores UNIX UID/GID data (owner & group ownership) for a given ZIP entry. We're using the field definition given in Info-Zip's source
archive: zip-3.0.tar.gz/proginfo/extrafld.txt
Local-header version:
Value Size Description
----- ---- -----------
0x7875 Short tag for this extra block type ("ux")
TSize Short total data size for this block
Version 1 byte version of this extra field, currently 1
UIDSize 1 byte Size of UID field
UID Variable UID for this entry (little-endian)
GIDSize 1 byte Size of GID field
GID Variable GID for this entry (little-endian)
Central-header version:
Value Size Description
----- ---- -----------
0x7855 Short tag for this extra block type ("Ux")
TSize Short total data size for this block (0)
- Since:
- 1.5
- See Also:
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Field Summary
Fields inherited from interface org.apache.commons.compress.archivers.zip.ZipExtraField
EXTRAFIELD_HEADER_SIZE -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionclone()booleanbyte[]The actual data to put into central directory data - without Header-ID or length specifier.Length of the extra field in the central directory data - without Header-ID or length specifier.longgetGID()Gets the GID as a long.The Header-ID.byte[]The actual data to put into local file data - without Header-ID or length specifier.Length of the extra field in the local file data - without Header-ID or length specifier.longgetUID()Gets the UID as a long.inthashCode()voidparseFromCentralDirectoryData(byte[] buffer, int offset, int length) Doesn't do anything since this class doesn't store anything inside the central directory.voidparseFromLocalFileData(byte[] data, int offset, int length) Populate data from this array as if it was in local file data.voidsetGID(long l) Sets the GID.voidsetUID(long l) Sets the UID.toString()Returns a String representation of this class useful for debugging purposes.
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Constructor Details
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X7875_NewUnix
public X7875_NewUnix()Constructor for X7875_NewUnix.
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Method Details
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clone
- Overrides:
clonein classObject- Throws:
CloneNotSupportedException
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equals
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getCentralDirectoryData
The actual data to put into central directory data - without Header-ID or length specifier.- Specified by:
getCentralDirectoryDatain interfaceZipExtraField- Returns:
- get the data
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getCentralDirectoryLength
Length of the extra field in the central directory data - without Header-ID or length specifier.- Specified by:
getCentralDirectoryLengthin interfaceZipExtraField- Returns:
- a
ZipShortfor the length of the data of this extra field
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getGID
Gets the GID as a long. GID is typically a 32 bit unsigned value on most UNIX systems, so we return a long to avoid integer overflow into the negatives in case values above and including 2^31 are being used.- Returns:
- the GID value.
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getHeaderId
The Header-ID.- Specified by:
getHeaderIdin interfaceZipExtraField- Returns:
- the value for the header id for this extrafield
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getLocalFileDataData
The actual data to put into local file data - without Header-ID or length specifier.- Specified by:
getLocalFileDataDatain interfaceZipExtraField- Returns:
- get the data
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getLocalFileDataLength
Length of the extra field in the local file data - without Header-ID or length specifier.- Specified by:
getLocalFileDataLengthin interfaceZipExtraField- Returns:
- a
ZipShortfor the length of the data of this extra field
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getUID
Gets the UID as a long. UID is typically a 32 bit unsigned value on most UNIX systems, so we return a long to avoid integer overflow into the negatives in case values above and including 2^31 are being used.- Returns:
- the UID value.
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hashCode
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parseFromCentralDirectoryData
public void parseFromCentralDirectoryData(byte[] buffer, int offset, int length) throws ZipException Doesn't do anything since this class doesn't store anything inside the central directory.- Specified by:
parseFromCentralDirectoryDatain interfaceZipExtraField- Parameters:
buffer- the buffer to read data fromoffset- offset into buffer to read datalength- the length of data- Throws:
ZipException- on error
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parseFromLocalFileData
Populate data from this array as if it was in local file data.- Specified by:
parseFromLocalFileDatain interfaceZipExtraField- Parameters:
data- an array of bytesoffset- the start offsetlength- the number of bytes in the array from offset- Throws:
ZipException- on error
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setGID
Sets the GID.- Parameters:
l- GID value to set on this extra field.
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setUID
Sets the UID.- Parameters:
l- UID value to set on this extra field.
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toString
Returns a String representation of this class useful for debugging purposes.
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