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z0.9.0u" Lars Gustäbel (lars@gustaebel.de)z5$Date: 2011-02-25 17:42:01 +0200 (Fri, 25 Feb 2011) $z?$Id: tarfile.py 88586 2011-02-25 15:42:01Z marc-andre.lemburg $u4 Gustavo Niemeyer, Niels Gustäbel, Richard Townsend. )openNTarFileTarInfo
is_tarfileTarError ReadErrorCompressionError StreamError ExtractError HeaderErrorENCODING USTAR_FORMAT
GNU_FORMAT
PAX_FORMATDEFAULT_FORMATr i s ustar s ustar 00d 0 1 2 3 4 5 6 7 L K S x g X pathlinkpathsizemtimeuidgidunamegname)ZatimeZctimer( r) r* r' ntzutf-8c C s( | j ||} | d| |t| t S )z8Convert a string to a null-terminated bytes object.
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Y nX |S ) z/Convert a number field to a python number.
r r# asciistrict0zinvalid header)r= r> )ranger/ r< intstrip
ValueErrorInvalidHeaderError)r1 nir5 r5 r6 nti s rK r? c C s t | } d| ko"d|d k n rDtd|d | f dt }n|tkrd|d | kopd|d k n r| dkrtdg}ntdg}d| | } x6t|d D ] }|jd| d@ | dL } qW ntd |S )
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rQ c C s0 dt tjd| }dt tjd| }||fS )a Calculate the checksum for a member's header by summing up all
characters except for the chksum field which is treated as if
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r@ Z
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rX c C s ddl }|jdtd tj| S )z/Deprecated in this location; use stat.filemode.r Nz$deprecated in favor of stat.filemoder$ )warningswarnDeprecationWarningstatfilemode)moderc r5 r5 r6 rg s rg c C s8 t tjdd }|d k r(| j|dj|} t| dd d S )Nr3 backslashreplace )end)getattrsysstdoutr. r: print)r1 r3 r5 r5 r6 _safe_print s rp c @ s e Zd ZdZdS )r zBase exception.N)__name__
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z%General exception for extract errors.N)rq rr rs rt r5 r5 r5 r6 r
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S )
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sys.stdout, a socket, a tape device etc.
_Stream is intended to be used only internally.
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TNF* r gzz zlib module is not availablerz bz2zbz2 module is not availablexzz lzma module is not availabletarzunknown compression type %r) _extfileobjry _StreamProxy getcomptyper rh comptypefileobjr_ rT posclosedzlib ImportErrorr crc32crc
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_Stream.closec C s | j j| j j | _d| _| jddkr0td| jddkrFtdt| jd}| jd |d @ rt| jdd
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S ) r zsSmall proxy class that enables transparent compression
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c C s || _ | j jt| _d S )N)r rZ BLOCKSIZErT )r r r5 r5 r6 r K s z_StreamProxy.__init__c C s | j j| _| jS )N)r rZ rT )r r' r5 r5 r6 rZ O s
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)r )r r5 r5 r6 r s z_FileInFile.tellc C s |t jkr tt|d| j| _nj|t jkr\|dk rFt| j| d| _qt| j| | j| _n.|t jkrtt| j| | jd| _ntd| jS )z(Seek to a position in the file.
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Nr r r# zunexpected end of data) r' r r r r r/ r r rZ r r0 ) r r' rT datastartstopr r2 rb r5 r5 r6 rZ s.
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r c s e Zd Z fddZ ZS ) ExFileObjectc s& t |j|j|j|j}t j| d S )N)r r offset_datar' sparsesuperr )r tarfiletarinfor ) __class__r5 r6 r s
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d#d$ Zeed%fd&d'Zd(d) Zd*d+ Zd,d- Zed.d/ Zd0d1 Zed2d3 Zed4d5 Zed6d7 Zed8d9 Z ed:d; Z ed<d= Z d>d? Z d@dA Z dBdC Z!dDdE Z"dFdG Z#dHdI Z$dJdK Z%dLdM Z&dNdO Z'dPdQ Z(dRdS Z)dTdU Z*dVdW Z+dXdY Z,dZd[ Z-d\d] Z.d^d_ Z/d`da Z0dbdc Z1ddde Z2dfdg Z3dhS )kr a Informational class which holds the details about an
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r rh r) r* r' r( chksumtypelinknamer+ r, devmajordevminorr r pax_headersr r _sparse_structs _link_targetr c C sj || _ d| _d| _d| _d| _d| _d| _t| _d| _ d| _
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i r r N)r rh r) r* r' r( r REGTYPEr r r+ r, r r r r r r )r r r5 r5 r6 r s" zTarInfo.__init__c C s | j S )N)r )r r5 r5 r6 _getpath s zTarInfo._getpathc C s
|| _ d S )N)r )r r r5 r5 r6 _setpath s zTarInfo._setpathc C s | j S )N)r )r r5 r5 r6 _getlinkpath s zTarInfo._getlinkpathc C s
|| _ d S )N)r )r r r5 r5 r6 _setlinkpath s zTarInfo._setlinkpathc C s d| j j| jt| f S )Nz<%s %r at %#x>)r rq r id)r r5 r5 r6 __repr__ s zTarInfo.__repr__c C sn | j | jd@ | j| j| j| j| j| j| j| j | j
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zTarInfo.get_infosurrogateescapec C sT | j }|tkr | j|||S |tkr4| j|||S |tkrH| j||S tddS )z<Return a tar header as a string of 512 byte blocks.
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XGLTYPE)clsr r5 r5 r6 create_pax_global_header s z TarInfo.create_pax_global_headerc C s |j d}xltdt|D ]R}dj|d| }dj||d }t|j||tkrt|j||tkrP qW td||fS )zUSplit a name longer than 100 chars into a prefix
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&zTarInfo._create_headerc C s. t t| t\}}|dkr*| t| t 7 } | S )zdReturn the string payload filled with zero bytes
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z missing or bad subsequent header)r rZ r: r' r2 r rx r r r r< r3 r4 r r r )r r rT nextr5 r5 r6 r3 r s
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zTarInfo._proc_paxc C sp g }x(t jd|D ]}|jt|jd qW g }x(t jd|D ]}|jt|jd q@W tt|||_dS )z?Process a GNU tar extended sparse header, version 0.0.
s \d+ GNU.sparse.offset=(\d+)\nr# s \d+ GNU.sparse.numbytes=(\d+)\nN)r@ finditerr rE rB listzipr )r r< r rT ZoffsetsrD r- r5 r5 r6 rI
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<listcomp> s z.TarInfo._proc_gnusparse_01.<locals>.<listcomp>zGNU.sparse.map,Nr$ r# )r rL rM r )r r< r r r5 r5 r6 rH s zTarInfo._proc_gnusparse_01c C s d}g }|j jt}|jdd\}}t|}xJt||d k rvd|krV||j jt7 }|jdd\}}|jt| q.W |j j |_t t
|ddd |ddd |_ dS )z?Process a GNU tar extended sparse header, version 1.0.
Nr r# r$ ) r rZ r r rE r/ r r r rL rM r )r r< r r Zfieldsr rT Znumberr5 r5 r6 rJ s zTarInfo._proc_gnusparse_10c
C s x|j D ]\}}|dkr(t| d| q
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|tkryt| |}W n tk
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W |j | _dS ) zoReplace fields with supplemental information from a previous
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zGNU.sparse.namer% zGNU.sparse.sizer' zGNU.sparse.realsizer r N) r setattrrE
PAX_FIELDSPAX_NUMBER_FIELDSrG r) r r )r r r3 r4 r r r5 r5 r6 r; + s"
zTarInfo._apply_pax_infoc C s. y |j |dS tk
r( |j ||S X dS )z1Decode a single field from a pax record.
rB N)r: UnicodeDecodeError)r r r3 Zfallback_encodingZfallback_errorsr5 r5 r6 rF B s zTarInfo._decode_pax_fieldc C s" t |t\}}|r|d7 }|t S )z_Round up a byte count by BLOCKSIZE and return it,
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r# )rY r )r r$ r` ra r5 r5 r6 r: J s zTarInfo._blockc C s
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| j tkS )N)r r )r r5 r5 r6 r( W s z
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TarInfo.issymc C s
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TarInfo.islnkc C s
| j tkS )N)r CHRTYPE)r r5 r5 r6 ischr] s z
TarInfo.ischrc C s
| j tkS )N)r BLKTYPE)r r5 r5 r6 isblk_ s z
TarInfo.isblkc C s
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| j d k S )N)r )r r5 r5 r6 issparsec s zTarInfo.issparsec C s | j tttfkS )N)r r\ r^ r` )r r5 r5 r6 isdeve s z
TarInfo.isdevN)r rh r) r* r' r( r r r r+ r, r r r r r r r r r )r )4rq rr rs rt __slots__r r r propertyr% r r r& r r r r r r r r classmethodr r staticmethodr r r r
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Zed^ddZed_ddZed`ddZdddddZdd Zd d Zd d Z d d! Z dad"d#Z dbdd%d&d'Z dcdd(d)d*Z ddd+d,Z!dedd.d/d0Z"dfdd.d2d3Z#d4d5 Z$dgd6d7Z%d8d9 Z&d:d; Z'd<d= Z(d>d? Z)d@dA Z*dBdC Z+dDdE Z,dFdG Z-dHdI Z.dJdK Z/dhdLdMZ0dNdO Z1didPdQZ2dRdS Z3dTdU Z4dVdW Z5dXdY Z6dZd[ Z7dS )jr z=The TarFile Class provides an interface to tar archives.
r Fr# Nrz r c C s ddddd}||kr t d|| _|| | _|sj| jdkrVtjj| rVd| _d| _t|| j}d | _n@|d
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S )a Open an (uncompressed) tar archive `name'. `mode' is either 'r' to
read from an existing archive, 'a' to append data to an existing
file or 'w' to create a new file overwriting an existing one. `mode'
defaults to 'r'.
If `fileobj' is given, it is used for reading or writing data. If it
can be determined, `mode' is overridden by `fileobj's mode.
`fileobj' is not closed, when TarFile is closed.
rbzr+bwbZxb)rz ar{ rO z!mode must be 'r', 'a', 'w' or 'x'rj r{ FNr rh Trz rO )rj r{ rO )-rG rh _moder} r% exists bltn_openr r r r r rL abspathr rP r dereference ignore_zerosr3 r4 r r debug
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zTarFile.__init__c
s | r| rt d|dkr fdd}xtt j|dD ]b}t j| }|dk r\|j } y||d|f|S ttfk
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|||} y ||
| f|} W n | j
Y nX d| _ | S |dkr j |||f|S t ddS )a Open a tar archive for reading, writing or appending. Return
an appropriate TarFile class.
mode:
'r' or 'r:*' open for reading with transparent compression
'r:' open for reading exclusively uncompressed
'r:gz' open for reading with gzip compression
'r:bz2' open for reading with bzip2 compression
'r:xz' open for reading with lzma compression
'a' or 'a:' open for appending, creating the file if necessary
'w' or 'w:' open for writing without compression
'w:gz' open for writing with gzip compression
'w:bz2' open for writing with bzip2 compression
'w:xz' open for writing with lzma compression
'x' or 'x:' create a tarfile exclusively without compression, raise
an exception if the file is already created
'x:gz' create a gzip compressed tarfile, raise an exception
if the file is already created
'x:bz2' create a bzip2 compressed tarfile, raise an exception
if the file is already created
'x:xz' create an lzma compressed tarfile, raise an exception
if the file is already created
'r|*' open a stream of tar blocks with transparent compression
'r|' open an uncompressed stream of tar blocks for reading
'r|gz' open a gzip compressed stream of tar blocks
'r|bz2' open a bzip2 compressed stream of tar blocks
'r|xz' open an lzma compressed stream of tar blocks
'w|' open an uncompressed stream for writing
'w|gz' open a gzip compressed stream for writing
'w|bz2' open a bzip2 compressed stream for writing
'w|xz' open an lzma compressed stream for writing
znothing to openrz r:*c s j | dkS )Ntaropen) OPEN_METH)r )r r5 r6 not_compressed s z$TarFile.open.<locals>.not_compressed)keyNz%file could not be opened successfully:r# r zunknown compression type %r|r{ zmode must be 'r' or 'w'Frj rO zundiscernible mode)rz ry )rz r{ )rj r{ rO )
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r r rh r r_ kwargsr| r funcZ saved_posrg streamr r5 )r r6 r sP %
z TarFile.openc K s |dkrt d| |||f|S )zCOpen uncompressed tar archive name for reading or writing.
rz rj r{ rO z!mode must be 'r', 'a', 'w' or 'x')rz rj r{ rO )rG )r r rh r r r5 r5 r6 rz M s zTarFile.taropenr c K s |d krt dyddl}|j W n ttfk
rB tdY nX y|j||d ||}W n. tk
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|_
|S ) zkOpen gzip compressed tar archive name for reading or writing.
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rz r{ rO z mode must be 'r', 'w' or 'x'r Nz gzip module is not availablerb znot a gzip fileF)rz r{ rO ) rG gzipZGzipFiler AttributeErrorr r r rz r r )r r rh r
compresslevelr r r r5 r5 r6 gzopenU s2
zTarFile.gzopenc K s |d krt dy ddl}W n tk
r8 tdY nX |j|pD|||d}y| j|||f|}W nF ttfk
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|_
|S ) zlOpen bzip2 compressed tar archive name for reading or writing.
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rz r{ rO z mode must be 'r', 'w' or 'x'r Nzbz2 module is not available)r znot a bzip2 fileF)rz r{ rO ) rG r r r ZBZ2Filerz r EOFErrorr r r )r r rh r r r r r r5 r5 r6 bz2openw s( zTarFile.bz2openc K s |d krt dy ddl}W n tk
r8 tdY nX |j|pD|||d}y| j|||f|}W nH |jtfk
r |j |dkrt d Y n |j Y nX d
|_
|S ) zkOpen lzma compressed tar archive name for reading or writing.
Appending is not allowed.
rz r{ rO z mode must be 'r', 'w' or 'x'r Nz lzma module is not available)presetznot an lzma fileF)rz r{ rO ) rG r r r ZLZMAFilerz r r r r r )r r rh r r r r r r5 r5 r6 xzopen s& zTarFile.xzopenrz r r r )r r r r c
C s | j r
dS d| _ z`| jdkrn| jjttd | jtd 7 _t| jt\}}|dkrn| jjtt| W d| j s| jj
X dS ) zlClose the TarFile. In write-mode, two finishing zero blocks are
appended to the archive.
NTrj r{ rO r$ r )rj r{ rO ) r rh r r[ r0 r r rY
RECORDSIZEr r )r r` ra r5 r5 r6 r s
z
TarFile.closec C s" | j |}|dkr td| |S )a Return a TarInfo object for member `name'. If `name' can not be
found in the archive, KeyError is raised. If a member occurs more
than once in the archive, its last occurrence is assumed to be the
most up-to-date version.
Nzfilename %r not found)
_getmemberKeyError)r r r r5 r5 r6 getmember s
zTarFile.getmemberc C s | j | js| j | jS )zReturn the members of the archive as a list of TarInfo objects. The
list has the same order as the members in the archive.
)_checkru _loadrt )r r5 r5 r6
getmembers s zTarFile.getmembersc C s dd | j D S )zReturn the members of the archive as a list of their names. It has
the same order as the list returned by getmembers().
c S s g | ]
}|j qS r5 )r )rN r r5 r5 r6 rP s z$TarFile.getnames.<locals>.<listcomp>)r )r r5 r5 r6 getnames s zTarFile.getnamesc C sp | j d |dk r|j}|dkr$|}tjj|\}}|jtjd}|jd}| j }| |_ |dkrt
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tdrlt
td rltj5|j6|_7tj8|j6|_9|S )
a Create a TarInfo object from the result of os.stat or equivalent
on an existing file. The file is either named by `name', or
specified as a file object `fileobj' with a file descriptor. If
given, `arcname' specifies an alternative name for the file in the
archive, otherwise, the name is taken from the 'name' attribute of
'fileobj', or the 'name' argument. The name should be a text
string.
awxNr lstatr r# r majorminor):r r r} r%
splitdriver seplstripr r r ro r rf fstatfilenost_modeS_ISREGst_inost_devst_nlinkrv rZ r S_ISDIRr S_ISFIFOr` S_ISLNKrX readlinkS_ISCHRr\ S_ISBLKr^ rh st_uidr) st_gidr* st_sizer' st_mtimer( r r pwdgetpwuidr+ r grpZgetgrgidr, r st_rdevr r r ) r r arcnamer Zdrvr Zstatresr Zstmdinoder r5 r5 r6
gettarinfo s~
zTarFile.gettarinfoT)rt c C s | j |dkr| }x|D ]}|rttj|j td|jp@|j|jpJ|jf |j sb|j
r|tdd|j |j f ntd|j
tdtj|jdd t|j|j rdnd |r|j rtd
|j |j rtd |j t qW dS ) a Print a table of contents to sys.stdout. If `verbose' is False, only
the names of the members are printed. If it is True, an `ls -l'-like
output is produced. `members' is optional and must be a subset of the
list returned by getmembers().
Nz%s/%sz%10sz%d,%dz%10dz%d-%02d-%02d %02d:%02d:%02dr r r z-> zlink to )r rp rf rg rh r+ r) r, r* r] r_ r r r' r Z localtimer( r r( rY r r[ ro )r verbosert r r5 r5 r6 rL O s*
z TarFile.list)filterc
C sv | j d |dkr|}|dk rPddl}|jdtd ||rP| jdd| dS | jdk rtjj|| jkr| jdd| dS | jd| | j ||}|dkr| jdd | dS |dk r||}|dkr| jdd| dS |j
rt |d
}| j || W dQ R X nd|j
rh| j | |rrxHtj|D ].}| jtjj||tjj|||||d q4W n
| j | dS ) a~ Add the file `name' to the archive. `name' may be any type of file
(directory, fifo, symbolic link, etc.). If given, `arcname'
specifies an alternative name for the file in the archive.
Directories are added recursively by default. This can be avoided by
setting `recursive' to False. `exclude' is a function that should
return True for each filename to be excluded. `filter' is a function
that expects a TarInfo object argument and returns the changed
TarInfo object, if it returns None the TarInfo object will be
excluded from the archive.
r Nr z use the filter argument insteadr$ ztarfile: Excluded %rztarfile: Skipped %rr# z tarfile: Unsupported type %rrh )r )r rc rd re _dbgr r} r% rn r r8 rm addfiler( listdiraddr ) r r r recursiveZexcluder rc r fr5 r5 r6 r o sB
z TarFile.addc C s | j d tj|}|j| j| j| j}| jj| | jt |7 _| j
}|dk rt || j|j |d t
|j t\}}|dkr| jjtt| |d7 }| j|t 7 _| jj| dS )a Add the TarInfo object `tarinfo' to the archive. If `fileobj' is
given, it should be a binary file, and tarinfo.size bytes are read
from it and added to the archive. You can create TarInfo objects
directly, or by using gettarinfo().
r N)r_ r r# )r r r rP r3 r4 r r[ r r/ rs rX r' rY r r0 rt r )r r r rT r_ r` ra r5 r5 r6 r s
zTarFile.addfile.)
numeric_ownerc C s g }|dkr| }xF|D ]>}|j r<|j| tj|}d|_| j|||j |d qW |jdd d |j x|D ]}tjj ||j
}y,| j |||d | j || | j
|| W qv tk
r } z$| jdkrւ n| jdd | W Y dd}~X qvX qvW dS )
a Extract all members from the archive to the current working
directory and set owner, modification time and permissions on
directories afterwards. `path' specifies a different directory
to extract to. `members' is optional and must be a subset of the
list returned by getmembers(). If `numeric_owner` is True, only
the numbers for user/group names are used and not the names.
Ni ) set_attrsr c S s | j S )N)r )rj r5 r5 r6 <lambda> s z$TarFile.extractall.<locals>.<lambda>)r} )r r# z tarfile: %s)r( r r rh extractsortreverser} r% r r chownutimechmodr
rr r )r r% rt r Z directoriesr dirpathrx r5 r5 r6
extractall s,
zTarFile.extractallr c C s | j d t|tr | j|}n|}|j r>tjj||j|_ y"| j
|tjj||j ||d W n t k
r } zJ| j
dkr n6|jdkr| jdd|j n| jdd|j|jf W Y dd}~X nB tk
r } z$| j
dkr n| jdd| W Y dd}~X nX dS )a Extract a member from the archive to the current working directory,
using its full name. Its file information is extracted as accurately
as possible. `member' may be a filename or a TarInfo object. You can
specify a different directory using `path'. File attributes (owner,
mtime, mode) are set unless `set_attrs' is False. If `numeric_owner`
is True, only the numbers for user/group names are used and not
the names.
rz )r r r Nr# z tarfile: %sztarfile: %s %r)r r r r r[ r} r% r r r _extract_memberr r rr filenamer strerrorr
)r memberr% r r r rx r5 r5 r6 r s(
(
zTarFile.extractc C s | j d t|tr | j|}n|}|j s6|jtkrB| j| |S |j sR|j rzt| j
t rht dq~| j
| j|S ndS dS )zExtract a member from the archive as a file object. `member' may be
a filename or a TarInfo object. If `member' is a regular file or a
link, an io.BufferedReader object is returned. Otherwise, None is
returned.
rz z'cannot extract (sym)link as file objectN)r r r r r8 r r9
fileobjectr[ rY r r r extractfile_find_link_target)r r r r5 r5 r6 r s
zTarFile.extractfilec C sV |j d}|jdtj}tjj|}|r@tjj| r@tj| |j sP|j rj| j
dd|j |j f n| j
d|j |j
r| j|| n|j r| j|| nx|j r| j|| nb|j s|j r| j|| nD|j s|j r| j|| n&|jtkr| j|| n | j|| |rR| j||| |j sR| j|| | j || dS )z\Extract the TarInfo object tarinfo to a physical
file called targetpath.
r r# z%s -> %sN) r) r r} r r% dirnamerl makedirsr[ rY r r r r8 makefiler( makedirra makefifor] r_ makedevmakelinkr r9 makeunknownr r r )r r
targetpathr r Z upperdirsr5 r5 r6 r 2 s4
zTarFile._extract_memberc C s* yt j|d W n tk
r$ Y nX dS )z,Make a directory called targetpath.
i N)r} mkdirFileExistsError)r r r r5 r5 r6 r c s zTarFile.makedirc C s | j }|j|j | j}t|df}|jdk rrx,|jD ]"\}}|j| t|||t| q6W |j|j |j nt|||jt| W dQ R X dS )z'Make a file called targetpath.
ri N)
r r r rs rm r rX r r' truncate)r r r sourcer_ targetr r' r5 r5 r6 r m s
zTarFile.makefilec C s" | j || | jdd|j dS )zYMake a file from a TarInfo object with an unknown type
at targetpath.
r# z9tarfile: Unknown file type %r, extracted as regular file.N)r r r )r r r r5 r5 r6 r } s zTarFile.makeunknownc C s" t tdrtj| ntddS )z'Make a fifo called targetpath.
mkfifoz fifo not supported by systemN)r r} r r
)r r r r5 r5 r6 r s
zTarFile.makefifoc C sb t td st td r td|j}|j r:|tjO }n
|tjO }tj||tj |j
|j dS )z<Make a character or block device called targetpath.
mknodr z'special devices not supported by systemN) r r} r
rh r_ rf S_IFBLKS_IFCHRr r r r )r r r rh r5 r5 r6 r s
zTarFile.makedevc C s yL|j rtj|j| n0tjj|jr8tj|j| n| j| j || W nH t
k
r y| j| j || W n t k
r t dY nX Y nX dS )zMake a (symbolic) link called targetpath. If it cannot be created
(platform limitation), we try to make a copy of the referenced file
instead of a link.
z%unable to resolve link inside archiveN)
rY r} symlinkr r% rl r linkr r symlink_exceptionr r
)r r r r5 r5 r6 r s
zTarFile.makelinkc C s t tdrtj dkr|j}|j}|sytr<tj|jd }W n tk
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