Class TarArchiveEntry
- java.lang.Object
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- org.apache.commons.compress.archivers.tar.TarArchiveEntry
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- All Implemented Interfaces:
ArchiveEntry,EntryStreamOffsets,TarConstants
public class TarArchiveEntry extends java.lang.Object implements ArchiveEntry, TarConstants, EntryStreamOffsets
This class represents an entry in a Tar archive. It consists of the entry's header, as well as the entry's File. Entries can be instantiated in one of three ways, depending on how they are to be used.TarEntries that are created from the header bytes read from an archive are instantiated with the
TarArchiveEntry(byte[])constructor. These entries will be used when extracting from or listing the contents of an archive. These entries have their header filled in using the header bytes. They also set the File to null, since they reference an archive entry not a file.TarEntries that are created from Files that are to be written into an archive are instantiated with the
TarArchiveEntry(File)orTarArchiveEntry(Path)constructor. These entries have their header filled in using the File's information. They also keep a reference to the File for convenience when writing entries.Finally, TarEntries can be constructed from nothing but a name. This allows the programmer to construct the entry by hand, for instance when only an InputStream is available for writing to the archive, and the header information is constructed from other information. In this case the header fields are set to defaults and the File is set to null.
The C structure for a Tar Entry's header is:
struct header { char name[100]; // TarConstants.NAMELEN - offset 0 char mode[8]; // TarConstants.MODELEN - offset 100 char uid[8]; // TarConstants.UIDLEN - offset 108 char gid[8]; // TarConstants.GIDLEN - offset 116 char size[12]; // TarConstants.SIZELEN - offset 124 char mtime[12]; // TarConstants.MODTIMELEN - offset 136 char chksum[8]; // TarConstants.CHKSUMLEN - offset 148 char linkflag[1]; // - offset 156 char linkname[100]; // TarConstants.NAMELEN - offset 157 The following fields are only present in new-style POSIX tar archives: char magic[6]; // TarConstants.MAGICLEN - offset 257 char version[2]; // TarConstants.VERSIONLEN - offset 263 char uname[32]; // TarConstants.UNAMELEN - offset 265 char gname[32]; // TarConstants.GNAMELEN - offset 297 char devmajor[8]; // TarConstants.DEVLEN - offset 329 char devminor[8]; // TarConstants.DEVLEN - offset 337 char prefix[155]; // TarConstants.PREFIXLEN - offset 345 // Used if "name" field is not long enough to hold the path char pad[12]; // NULs - offset 500 } header; All unused bytes are set to null. New-style GNU tar files are slightly different from the above. For values of size larger than 077777777777L (11 7s) or uid and gid larger than 07777777L (7 7s) the sign bit of the first byte is set, and the rest of the field is the binary representation of the number. See TarUtils.parseOctalOrBinary.The C structure for a old GNU Tar Entry's header is:
struct oldgnu_header { char unused_pad1[345]; // TarConstants.PAD1LEN_GNU - offset 0 char atime[12]; // TarConstants.ATIMELEN_GNU - offset 345 char ctime[12]; // TarConstants.CTIMELEN_GNU - offset 357 char offset[12]; // TarConstants.OFFSETLEN_GNU - offset 369 char longnames[4]; // TarConstants.LONGNAMESLEN_GNU - offset 381 char unused_pad2; // TarConstants.PAD2LEN_GNU - offset 385 struct sparse sp[4]; // TarConstants.SPARSELEN_GNU - offset 386 char isextended; // TarConstants.ISEXTENDEDLEN_GNU - offset 482 char realsize[12]; // TarConstants.REALSIZELEN_GNU - offset 483 char unused_pad[17]; // TarConstants.PAD3LEN_GNU - offset 495 };Whereas, "struct sparse" is:struct sparse { char offset[12]; // offset 0 char numbytes[12]; // offset 12 };The C structure for a xstar (Jörg Schilling star) Tar Entry's header is:
struct star_header { char name[100]; // offset 0 char mode[8]; // offset 100 char uid[8]; // offset 108 char gid[8]; // offset 116 char size[12]; // offset 124 char mtime[12]; // offset 136 char chksum[8]; // offset 148 char typeflag; // offset 156 char linkname[100]; // offset 157 char magic[6]; // offset 257 char version[2]; // offset 263 char uname[32]; // offset 265 char gname[32]; // offset 297 char devmajor[8]; // offset 329 char devminor[8]; // offset 337 char prefix[131]; // offset 345 char atime[12]; // offset 476 char ctime[12]; // offset 488 char mfill[8]; // offset 500 char xmagic[4]; // offset 508 "tar" };which is identical to new-style POSIX up to the first 130 bytes of the prefix.
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Field Summary
Fields Modifier and Type Field Description static intDEFAULT_DIR_MODEDefault permissions bits for directoriesstatic intDEFAULT_FILE_MODEDefault permissions bits for filesstatic intMAX_NAMELENMaximum length of a user's name in the tar filestatic intMILLIS_PER_SECONDConvert millis to secondsstatic longUNKNOWNValue used to indicate unknown mode, user/groupids, device numbers and modTime when parsing a file in lenient mode and the archive contains illegal fields.-
Fields inherited from interface org.apache.commons.compress.archivers.ArchiveEntry
SIZE_UNKNOWN
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Fields inherited from interface org.apache.commons.compress.archivers.EntryStreamOffsets
OFFSET_UNKNOWN
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Fields inherited from interface org.apache.commons.compress.archivers.tar.TarConstants
ATIMELEN_GNU, ATIMELEN_XSTAR, CHKSUM_OFFSET, CHKSUMLEN, CTIMELEN_GNU, CTIMELEN_XSTAR, DEFAULT_BLKSIZE, DEFAULT_RCDSIZE, DEVLEN, FORMAT_OLDGNU, FORMAT_POSIX, FORMAT_XSTAR, GIDLEN, GNAMELEN, GNU_LONGLINK, ISEXTENDEDLEN_GNU, ISEXTENDEDLEN_GNU_SPARSE, LF_BLK, LF_CHR, LF_CONTIG, LF_DIR, LF_FIFO, LF_GNUTYPE_LONGLINK, LF_GNUTYPE_LONGNAME, LF_GNUTYPE_SPARSE, LF_LINK, LF_NORMAL, LF_OLDNORM, LF_PAX_EXTENDED_HEADER_LC, LF_PAX_EXTENDED_HEADER_UC, LF_PAX_GLOBAL_EXTENDED_HEADER, LF_SYMLINK, LONGNAMESLEN_GNU, MAGIC_ANT, MAGIC_GNU, MAGIC_OFFSET, MAGIC_POSIX, MAGIC_XSTAR, MAGICLEN, MAXID, MAXSIZE, MODELEN, MODTIMELEN, NAMELEN, OFFSETLEN_GNU, PAD2LEN_GNU, PREFIXLEN, PREFIXLEN_XSTAR, REALSIZELEN_GNU, SIZELEN, SPARSE_HEADERS_IN_EXTENSION_HEADER, SPARSE_HEADERS_IN_OLDGNU_HEADER, SPARSE_NUMBYTES_LEN, SPARSE_OFFSET_LEN, SPARSELEN_GNU, SPARSELEN_GNU_SPARSE, UIDLEN, UNAMELEN, VERSION_ANT, VERSION_GNU_SPACE, VERSION_GNU_ZERO, VERSION_OFFSET, VERSION_POSIX, VERSIONLEN, XSTAR_MAGIC_LEN, XSTAR_MAGIC_OFFSET
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Constructor Summary
Constructors Constructor Description TarArchiveEntry(byte[] headerBuf)Construct an entry from an archive's header bytes.TarArchiveEntry(byte[] headerBuf, ZipEncoding encoding)Construct an entry from an archive's header bytes.TarArchiveEntry(byte[] headerBuf, ZipEncoding encoding, boolean lenient)Construct an entry from an archive's header bytes.TarArchiveEntry(byte[] headerBuf, ZipEncoding encoding, boolean lenient, long dataOffset)Construct an entry from an archive's header bytes for random access tar.TarArchiveEntry(java.io.File file)Construct an entry for a file.TarArchiveEntry(java.io.File file, java.lang.String fileName)Construct an entry for a file.TarArchiveEntry(java.lang.String name)Construct an entry with only a name.TarArchiveEntry(java.lang.String name, boolean preserveAbsolutePath)Construct an entry with only a name.TarArchiveEntry(java.lang.String name, byte linkFlag)Construct an entry with a name and a link flag.TarArchiveEntry(java.lang.String name, byte linkFlag, boolean preserveAbsolutePath)Construct an entry with a name and a link flag.TarArchiveEntry(java.nio.file.Path file)Construct an entry for a file.TarArchiveEntry(java.nio.file.Path file, java.lang.String fileName, java.nio.file.LinkOption... linkOptions)Construct an entry for a file.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description voidaddPaxHeader(java.lang.String name, java.lang.String value)add a PAX header to this entry.voidclearExtraPaxHeaders()clear all extra PAX headers.booleanequals(java.lang.Object it)Determine if the two entries are equal.booleanequals(TarArchiveEntry it)Determine if the two entries are equal.longgetDataOffset()Gets the offset of data stream within the archive file,intgetDevMajor()Get this entry's major device number.intgetDevMinor()Get this entry's minor device number.TarArchiveEntry[]getDirectoryEntries()If this entry represents a file, and the file is a directory, return an array of TarEntries for this entry's children.java.lang.StringgetExtraPaxHeader(java.lang.String name)get named extra PAX headerjava.util.Map<java.lang.String,java.lang.String>getExtraPaxHeaders()get extra PAX Headersjava.io.FilegetFile()Get this entry's file.intgetGroupId()Deprecated.use #getLongGroupId instead as group ids can be bigger thanInteger.MAX_VALUEjava.lang.StringgetGroupName()Get this entry's group name.java.util.DategetLastModifiedDate()Gets the last modified date of this entry.java.lang.StringgetLinkName()Get this entry's link name.longgetLongGroupId()Get this entry's group id.longgetLongUserId()Get this entry's user id.intgetMode()Get this entry's mode.java.util.DategetModTime()Get this entry's modification time.java.lang.StringgetName()Get this entry's name.java.util.List<TarArchiveStructSparse>getOrderedSparseHeaders()Get this entry's sparse headers ordered by offset with all empty sparse sections at the start filtered out.java.nio.file.PathgetPath()Get this entry's file.longgetRealSize()Get this entry's real file size in case of a sparse file.longgetSize()Get this entry's file size.java.util.List<TarArchiveStructSparse>getSparseHeaders()Get this entry's sparse headersintgetUserId()Deprecated.use #getLongUserId instead as user ids can be bigger thanInteger.MAX_VALUEjava.lang.StringgetUserName()Get this entry's user name.inthashCode()Hashcodes are based on entry names.booleanisBlockDevice()Check if this is a block device entry.booleanisCharacterDevice()Check if this is a character device entry.booleanisCheckSumOK()Get this entry's checksum status.booleanisDescendent(TarArchiveEntry desc)Determine if the given entry is a descendant of this entry.booleanisDirectory()Return whether or not this entry represents a directory.booleanisExtended()Indicates in case of an oldgnu sparse file if an extension sparse header follows.booleanisFIFO()Check if this is a FIFO (pipe) entry.booleanisFile()Check if this is a "normal file"booleanisGlobalPaxHeader()Check if this is a Pax header.booleanisGNULongLinkEntry()Indicate if this entry is a GNU long linkname blockbooleanisGNULongNameEntry()Indicate if this entry is a GNU long name blockbooleanisGNUSparse()Indicate if this entry is a GNU sparse block.booleanisLink()Check if this is a link entry.booleanisOldGNUSparse()Indicate if this entry is a GNU or star sparse block using the oldgnu format.booleanisPaxGNU1XSparse()Get if this entry is a sparse file with 1.X PAX Format or notbooleanisPaxGNUSparse()Indicate if this entry is a GNU sparse block using one of the PAX formats.booleanisPaxHeader()Check if this is a Pax header.booleanisSparse()Check whether this is a sparse entry.booleanisStarSparse()Indicate if this entry is a star sparse block using PAX headers.booleanisStreamContiguous()Indicates whether the stream is contiguous, i.e.booleanisSymbolicLink()Check if this is a symbolic link entry.voidparseTarHeader(byte[] header)Parse an entry's header information from a header buffer.voidparseTarHeader(byte[] header, ZipEncoding encoding)Parse an entry's header information from a header buffer.voidsetDataOffset(long dataOffset)Set the offset of the data for the tar entry.voidsetDevMajor(int devNo)Set this entry's major device number.voidsetDevMinor(int devNo)Set this entry's minor device number.voidsetGroupId(int groupId)Set this entry's group id.voidsetGroupId(long groupId)Set this entry's group id.voidsetGroupName(java.lang.String groupName)Set this entry's group name.voidsetIds(int userId, int groupId)Convenience method to set this entry's group and user ids.voidsetLinkName(java.lang.String link)Set this entry's link name.voidsetMode(int mode)Set the mode for this entryvoidsetModTime(long time)Set this entry's modification time.voidsetModTime(java.nio.file.attribute.FileTime time)Set this entry's modification time.voidsetModTime(java.util.Date time)Set this entry's modification time.voidsetName(java.lang.String name)Set this entry's name.voidsetNames(java.lang.String userName, java.lang.String groupName)Convenience method to set this entry's group and user names.voidsetSize(long size)Set this entry's file size.voidsetSparseHeaders(java.util.List<TarArchiveStructSparse> sparseHeaders)Set this entry's sparse headersvoidsetUserId(int userId)Set this entry's user id.voidsetUserId(long userId)Set this entry's user id.voidsetUserName(java.lang.String userName)Set this entry's user name.voidwriteEntryHeader(byte[] outbuf)Write an entry's header information to a header buffer.voidwriteEntryHeader(byte[] outbuf, ZipEncoding encoding, boolean starMode)Write an entry's header information to a header buffer.
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Field Detail
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UNKNOWN
public static final long UNKNOWN
Value used to indicate unknown mode, user/groupids, device numbers and modTime when parsing a file in lenient mode and the archive contains illegal fields.- Since:
- 1.19
- See Also:
- Constant Field Values
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MAX_NAMELEN
public static final int MAX_NAMELEN
Maximum length of a user's name in the tar file- See Also:
- Constant Field Values
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DEFAULT_DIR_MODE
public static final int DEFAULT_DIR_MODE
Default permissions bits for directories- See Also:
- Constant Field Values
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DEFAULT_FILE_MODE
public static final int DEFAULT_FILE_MODE
Default permissions bits for files- See Also:
- Constant Field Values
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MILLIS_PER_SECOND
public static final int MILLIS_PER_SECOND
Convert millis to seconds- See Also:
- Constant Field Values
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Constructor Detail
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TarArchiveEntry
public TarArchiveEntry(java.lang.String name)
Construct an entry with only a name. This allows the programmer to construct the entry's header "by hand". File is set to null.The entry's name will be the value of the
nameargument with all file separators replaced by forward slashes and leading slashes as well as Windows drive letters stripped.- Parameters:
name- the entry name
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TarArchiveEntry
public TarArchiveEntry(java.lang.String name, boolean preserveAbsolutePath)Construct an entry with only a name. This allows the programmer to construct the entry's header "by hand". File is set to null.The entry's name will be the value of the
nameargument with all file separators replaced by forward slashes. Leading slashes and Windows drive letters are stripped ifpreserveAbsolutePathisfalse.- Parameters:
name- the entry namepreserveAbsolutePath- whether to allow leading slashes or drive letters in the name.- Since:
- 1.1
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TarArchiveEntry
public TarArchiveEntry(java.lang.String name, byte linkFlag)Construct an entry with a name and a link flag.The entry's name will be the value of the
nameargument with all file separators replaced by forward slashes and leading slashes as well as Windows drive letters stripped.- Parameters:
name- the entry namelinkFlag- the entry link flag.
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TarArchiveEntry
public TarArchiveEntry(java.lang.String name, byte linkFlag, boolean preserveAbsolutePath)Construct an entry with a name and a link flag.The entry's name will be the value of the
nameargument with all file separators replaced by forward slashes. Leading slashes and Windows drive letters are stripped ifpreserveAbsolutePathisfalse.- Parameters:
name- the entry namelinkFlag- the entry link flag.preserveAbsolutePath- whether to allow leading slashes or drive letters in the name.- Since:
- 1.5
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TarArchiveEntry
public TarArchiveEntry(java.io.File file)
Construct an entry for a file. File is set to file, and the header is constructed from information from the file. The name is set from the normalized file path.The entry's name will be the value of the
file's path with all file separators replaced by forward slashes and leading slashes as well as Windows drive letters stripped. The name will end in a slash if thefilerepresents a directory.Note: Since 1.21 this internally uses the same code as the TarArchiveEntry constructors with a
Pathas parameter. But all thrown exceptions are ignored. If handling those exceptions is needed consider switching to the path constructors.- Parameters:
file- The file that the entry represents.
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TarArchiveEntry
public TarArchiveEntry(java.nio.file.Path file) throws java.io.IOExceptionConstruct an entry for a file. File is set to file, and the header is constructed from information from the file. The name is set from the normalized file path.The entry's name will be the value of the
file's path with all file separators replaced by forward slashes and leading slashes as well as Windows drive letters stripped. The name will end in a slash if thefilerepresents a directory.- Parameters:
file- The file that the entry represents.- Throws:
java.io.IOException- if an I/O error occurs- Since:
- 1.21
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TarArchiveEntry
public TarArchiveEntry(java.io.File file, java.lang.String fileName)Construct an entry for a file. File is set to file, and the header is constructed from information from the file.The entry's name will be the value of the
fileNameargument with all file separators replaced by forward slashes and leading slashes as well as Windows drive letters stripped. The name will end in a slash if thefilerepresents a directory.Note: Since 1.21 this internally uses the same code as the TarArchiveEntry constructors with a
Pathas parameter. But all thrown exceptions are ignored. If handling those exceptions is needed consider switching to the path constructors.- Parameters:
file- The file that the entry represents.fileName- the name to be used for the entry.
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TarArchiveEntry
public TarArchiveEntry(java.nio.file.Path file, java.lang.String fileName, java.nio.file.LinkOption... linkOptions) throws java.io.IOExceptionConstruct an entry for a file. File is set to file, and the header is constructed from information from the file.The entry's name will be the value of the
fileNameargument with all file separators replaced by forward slashes and leading slashes as well as Windows drive letters stripped. The name will end in a slash if thefilerepresents a directory.- Parameters:
file- The file that the entry represents.fileName- the name to be used for the entry.linkOptions- options indicating how symbolic links are handled.- Throws:
java.io.IOException- if an I/O error occurs- Since:
- 1.21
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TarArchiveEntry
public TarArchiveEntry(byte[] headerBuf)
Construct an entry from an archive's header bytes. File is set to null.- Parameters:
headerBuf- The header bytes from a tar archive entry.- Throws:
java.lang.IllegalArgumentException- if any of the numeric fields have an invalid format
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TarArchiveEntry
public TarArchiveEntry(byte[] headerBuf, ZipEncoding encoding) throws java.io.IOExceptionConstruct an entry from an archive's header bytes. File is set to null.- Parameters:
headerBuf- The header bytes from a tar archive entry.encoding- encoding to use for file names- Throws:
java.lang.IllegalArgumentException- if any of the numeric fields have an invalid formatjava.io.IOException- on error- Since:
- 1.4
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TarArchiveEntry
public TarArchiveEntry(byte[] headerBuf, ZipEncoding encoding, boolean lenient) throws java.io.IOExceptionConstruct an entry from an archive's header bytes. File is set to null.- Parameters:
headerBuf- The header bytes from a tar archive entry.encoding- encoding to use for file nameslenient- when set to true illegal values for group/userid, mode, device numbers and timestamp will be ignored and the fields set toUNKNOWN. When set to false such illegal fields cause an exception instead.- Throws:
java.lang.IllegalArgumentException- if any of the numeric fields have an invalid formatjava.io.IOException- on error- Since:
- 1.19
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TarArchiveEntry
public TarArchiveEntry(byte[] headerBuf, ZipEncoding encoding, boolean lenient, long dataOffset) throws java.io.IOExceptionConstruct an entry from an archive's header bytes for random access tar. File is set to null.- Parameters:
headerBuf- the header bytes from a tar archive entry.encoding- encoding to use for file names.lenient- when set to true illegal values for group/userid, mode, device numbers and timestamp will be ignored and the fields set toUNKNOWN. When set to false such illegal fields cause an exception instead.dataOffset- position of the entry data in the random access file.- Throws:
java.lang.IllegalArgumentException- if any of the numeric fields have an invalid format.java.io.IOException- on error.- Since:
- 1.21
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Method Detail
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equals
public boolean equals(TarArchiveEntry it)
Determine if the two entries are equal. Equality is determined by the header names being equal.- Parameters:
it- Entry to be checked for equality.- Returns:
- True if the entries are equal.
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equals
public boolean equals(java.lang.Object it)
Determine if the two entries are equal. Equality is determined by the header names being equal.- Overrides:
equalsin classjava.lang.Object- Parameters:
it- Entry to be checked for equality.- Returns:
- True if the entries are equal.
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hashCode
public int hashCode()
Hashcodes are based on entry names.- Overrides:
hashCodein classjava.lang.Object- Returns:
- the entry hashcode
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isDescendent
public boolean isDescendent(TarArchiveEntry desc)
Determine if the given entry is a descendant of this entry. Descendancy is determined by the name of the descendant starting with this entry's name.- Parameters:
desc- Entry to be checked as a descendent of this.- Returns:
- True if entry is a descendant of this.
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getName
public java.lang.String getName()
Get this entry's name.This method returns the raw name as it is stored inside of the archive.
- Specified by:
getNamein interfaceArchiveEntry- Returns:
- This entry's name.
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setName
public void setName(java.lang.String name)
Set this entry's name.- Parameters:
name- This entry's new name.
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setMode
public void setMode(int mode)
Set the mode for this entry- Parameters:
mode- the mode for this entry
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getLinkName
public java.lang.String getLinkName()
Get this entry's link name.- Returns:
- This entry's link name.
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setLinkName
public void setLinkName(java.lang.String link)
Set this entry's link name.- Parameters:
link- the link name to use.- Since:
- 1.1
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getUserId
@Deprecated public int getUserId()
Deprecated.use #getLongUserId instead as user ids can be bigger thanInteger.MAX_VALUEGet this entry's user id.- Returns:
- This entry's user id.
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setUserId
public void setUserId(int userId)
Set this entry's user id.- Parameters:
userId- This entry's new user id.
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getLongUserId
public long getLongUserId()
Get this entry's user id.- Returns:
- This entry's user id.
- Since:
- 1.10
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setUserId
public void setUserId(long userId)
Set this entry's user id.- Parameters:
userId- This entry's new user id.- Since:
- 1.10
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getGroupId
@Deprecated public int getGroupId()
Deprecated.use #getLongGroupId instead as group ids can be bigger thanInteger.MAX_VALUEGet this entry's group id.- Returns:
- This entry's group id.
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setGroupId
public void setGroupId(int groupId)
Set this entry's group id.- Parameters:
groupId- This entry's new group id.
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getLongGroupId
public long getLongGroupId()
Get this entry's group id.- Returns:
- This entry's group id.
- Since:
- 1.10
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setGroupId
public void setGroupId(long groupId)
Set this entry's group id.- Parameters:
groupId- This entry's new group id.- Since:
- 1.10
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getUserName
public java.lang.String getUserName()
Get this entry's user name.- Returns:
- This entry's user name.
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setUserName
public void setUserName(java.lang.String userName)
Set this entry's user name.- Parameters:
userName- This entry's new user name.
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getGroupName
public java.lang.String getGroupName()
Get this entry's group name.- Returns:
- This entry's group name.
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setGroupName
public void setGroupName(java.lang.String groupName)
Set this entry's group name.- Parameters:
groupName- This entry's new group name.
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setIds
public void setIds(int userId, int groupId)Convenience method to set this entry's group and user ids.- Parameters:
userId- This entry's new user id.groupId- This entry's new group id.
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setNames
public void setNames(java.lang.String userName, java.lang.String groupName)Convenience method to set this entry's group and user names.- Parameters:
userName- This entry's new user name.groupName- This entry's new group name.
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setModTime
public void setModTime(long time)
Set this entry's modification time. The parameter passed to this method is in "Java time".- Parameters:
time- This entry's new modification time.
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setModTime
public void setModTime(java.util.Date time)
Set this entry's modification time.- Parameters:
time- This entry's new modification time.
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setModTime
public void setModTime(java.nio.file.attribute.FileTime time)
Set this entry's modification time.- Parameters:
time- This entry's new modification time.- Since:
- 1.21
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getModTime
public java.util.Date getModTime()
Get this entry's modification time.- Returns:
- This entry's modification time.
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getLastModifiedDate
public java.util.Date getLastModifiedDate()
Description copied from interface:ArchiveEntryGets the last modified date of this entry.- Specified by:
getLastModifiedDatein interfaceArchiveEntry- Returns:
- the last modified date of this entry.
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isCheckSumOK
public boolean isCheckSumOK()
Get this entry's checksum status.- Returns:
- if the header checksum is reasonably correct
- Since:
- 1.5
- See Also:
TarUtils.verifyCheckSum(byte[])
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getFile
public java.io.File getFile()
Get this entry's file.This method is only useful for entries created from a
FileorPathbut not for entries read from an archive.- Returns:
- this entry's file or null if the entry was not created from a file.
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getPath
public java.nio.file.Path getPath()
Get this entry's file.This method is only useful for entries created from a
FileorPathbut not for entries read from an archive.- Returns:
- this entry's file or null if the entry was not created from a file.
- Since:
- 1.21
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getMode
public int getMode()
Get this entry's mode.- Returns:
- This entry's mode.
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getSize
public long getSize()
Get this entry's file size.This is the size the entry's data uses inside of the archive. Usually this is the same as
getRealSize(), but it doesn't take the "holes" into account when the entry represents a sparse file.- Specified by:
getSizein interfaceArchiveEntry- Returns:
- This entry's file size.
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setSparseHeaders
public void setSparseHeaders(java.util.List<TarArchiveStructSparse> sparseHeaders)
Set this entry's sparse headers- Parameters:
sparseHeaders- The new sparse headers- Since:
- 1.20
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getSparseHeaders
public java.util.List<TarArchiveStructSparse> getSparseHeaders()
Get this entry's sparse headers- Returns:
- This entry's sparse headers
- Since:
- 1.20
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getOrderedSparseHeaders
public java.util.List<TarArchiveStructSparse> getOrderedSparseHeaders() throws java.io.IOException
Get this entry's sparse headers ordered by offset with all empty sparse sections at the start filtered out.- Returns:
- immutable list of this entry's sparse headers, never null
- Throws:
java.io.IOException- if the list of sparse headers contains blocks that overlap- Since:
- 1.21
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isPaxGNU1XSparse
public boolean isPaxGNU1XSparse()
Get if this entry is a sparse file with 1.X PAX Format or not- Returns:
- True if this entry is a sparse file with 1.X PAX Format
- Since:
- 1.20
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setSize
public void setSize(long size)
Set this entry's file size.- Parameters:
size- This entry's new file size.- Throws:
java.lang.IllegalArgumentException- if the size is < 0.
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getDevMajor
public int getDevMajor()
Get this entry's major device number.- Returns:
- This entry's major device number.
- Since:
- 1.4
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setDevMajor
public void setDevMajor(int devNo)
Set this entry's major device number.- Parameters:
devNo- This entry's major device number.- Throws:
java.lang.IllegalArgumentException- if the devNo is < 0.- Since:
- 1.4
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getDevMinor
public int getDevMinor()
Get this entry's minor device number.- Returns:
- This entry's minor device number.
- Since:
- 1.4
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setDevMinor
public void setDevMinor(int devNo)
Set this entry's minor device number.- Parameters:
devNo- This entry's minor device number.- Throws:
java.lang.IllegalArgumentException- if the devNo is < 0.- Since:
- 1.4
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isExtended
public boolean isExtended()
Indicates in case of an oldgnu sparse file if an extension sparse header follows.- Returns:
- true if an extension oldgnu sparse header follows.
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getRealSize
public long getRealSize()
Get this entry's real file size in case of a sparse file.This is the size a file would take on disk if the entry was expanded.
If the file is not a sparse file, return size instead of realSize.
- Returns:
- This entry's real file size, if the file is not a sparse file, return size instead of realSize.
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isGNUSparse
public boolean isGNUSparse()
Indicate if this entry is a GNU sparse block.- Returns:
- true if this is a sparse extension provided by GNU tar
-
isOldGNUSparse
public boolean isOldGNUSparse()
Indicate if this entry is a GNU or star sparse block using the oldgnu format.- Returns:
- true if this is a sparse extension provided by GNU tar or star
- Since:
- 1.11
-
isPaxGNUSparse
public boolean isPaxGNUSparse()
Indicate if this entry is a GNU sparse block using one of the PAX formats.- Returns:
- true if this is a sparse extension provided by GNU tar
- Since:
- 1.11
-
isStarSparse
public boolean isStarSparse()
Indicate if this entry is a star sparse block using PAX headers.- Returns:
- true if this is a sparse extension provided by star
- Since:
- 1.11
-
isGNULongLinkEntry
public boolean isGNULongLinkEntry()
Indicate if this entry is a GNU long linkname block- Returns:
- true if this is a long name extension provided by GNU tar
-
isGNULongNameEntry
public boolean isGNULongNameEntry()
Indicate if this entry is a GNU long name block- Returns:
- true if this is a long name extension provided by GNU tar
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isPaxHeader
public boolean isPaxHeader()
Check if this is a Pax header.- Returns:
trueif this is a Pax header.- Since:
- 1.1
-
isGlobalPaxHeader
public boolean isGlobalPaxHeader()
Check if this is a Pax header.- Returns:
trueif this is a Pax header.- Since:
- 1.1
-
isDirectory
public boolean isDirectory()
Return whether or not this entry represents a directory.- Specified by:
isDirectoryin interfaceArchiveEntry- Returns:
- True if this entry is a directory.
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isFile
public boolean isFile()
Check if this is a "normal file"- Returns:
- whether this is a "normal file"
- Since:
- 1.2
-
isSymbolicLink
public boolean isSymbolicLink()
Check if this is a symbolic link entry.- Returns:
- whether this is a symbolic link
- Since:
- 1.2
-
isLink
public boolean isLink()
Check if this is a link entry.- Returns:
- whether this is a link entry
- Since:
- 1.2
-
isCharacterDevice
public boolean isCharacterDevice()
Check if this is a character device entry.- Returns:
- whether this is a character device
- Since:
- 1.2
-
isBlockDevice
public boolean isBlockDevice()
Check if this is a block device entry.- Returns:
- whether this is a block device
- Since:
- 1.2
-
isFIFO
public boolean isFIFO()
Check if this is a FIFO (pipe) entry.- Returns:
- whether this is a FIFO entry
- Since:
- 1.2
-
isSparse
public boolean isSparse()
Check whether this is a sparse entry.- Returns:
- whether this is a sparse entry
- Since:
- 1.11
-
getDataOffset
public long getDataOffset()
Gets the offset of data stream within the archive file,- Specified by:
getDataOffsetin interfaceEntryStreamOffsets- Returns:
- the offset of entry data stream,
OFFSET_UNKNOWNif not known. - Since:
- 1.21
-
setDataOffset
public void setDataOffset(long dataOffset)
Set the offset of the data for the tar entry.- Parameters:
dataOffset- the position of the data in the tar.- Since:
- 1.21
-
isStreamContiguous
public boolean isStreamContiguous()
Indicates whether the stream is contiguous, i.e. not split among several archive parts, interspersed with control blocks, etc.- Specified by:
isStreamContiguousin interfaceEntryStreamOffsets- Returns:
- true if stream is contiguous, false otherwise.
- Since:
- 1.21
-
getExtraPaxHeaders
public java.util.Map<java.lang.String,java.lang.String> getExtraPaxHeaders()
get extra PAX Headers- Returns:
- read-only map containing any extra PAX Headers
- Since:
- 1.15
-
clearExtraPaxHeaders
public void clearExtraPaxHeaders()
clear all extra PAX headers.- Since:
- 1.15
-
addPaxHeader
public void addPaxHeader(java.lang.String name, java.lang.String value)add a PAX header to this entry. If the header corresponds to an existing field in the entry, that field will be set; otherwise the header will be added to the extraPaxHeaders Map- Parameters:
name- The full name of the header to set.value- value of header.- Since:
- 1.15
-
getExtraPaxHeader
public java.lang.String getExtraPaxHeader(java.lang.String name)
get named extra PAX header- Parameters:
name- The full name of an extended PAX header to retrieve- Returns:
- The value of the header, if any.
- Since:
- 1.15
-
getDirectoryEntries
public TarArchiveEntry[] getDirectoryEntries()
If this entry represents a file, and the file is a directory, return an array of TarEntries for this entry's children.This method is only useful for entries created from a
FileorPathbut not for entries read from an archive.- Returns:
- An array of TarEntry's for this entry's children.
-
writeEntryHeader
public void writeEntryHeader(byte[] outbuf)
Write an entry's header information to a header buffer.This method does not use the star/GNU tar/BSD tar extensions.
- Parameters:
outbuf- The tar entry header buffer to fill in.
-
writeEntryHeader
public void writeEntryHeader(byte[] outbuf, ZipEncoding encoding, boolean starMode) throws java.io.IOExceptionWrite an entry's header information to a header buffer.- Parameters:
outbuf- The tar entry header buffer to fill in.encoding- encoding to use when writing the file name.starMode- whether to use the star/GNU tar/BSD tar extension for numeric fields if their value doesn't fit in the maximum size of standard tar archives- Throws:
java.io.IOException- on error- Since:
- 1.4
-
parseTarHeader
public void parseTarHeader(byte[] header)
Parse an entry's header information from a header buffer.- Parameters:
header- The tar entry header buffer to get information from.- Throws:
java.lang.IllegalArgumentException- if any of the numeric fields have an invalid format
-
parseTarHeader
public void parseTarHeader(byte[] header, ZipEncoding encoding) throws java.io.IOExceptionParse an entry's header information from a header buffer.- Parameters:
header- The tar entry header buffer to get information from.encoding- encoding to use for file names- Throws:
java.lang.IllegalArgumentException- if any of the numeric fields have an invalid formatjava.io.IOException- on error- Since:
- 1.4
-
-