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z0.9.0u" Lars Gustäbel ([email protected])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 $u4 Gustavo Niemeyer, Niels Gustäbel, Richard Townsend.� )�openN�TarFile�TarInfo�
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s r N���)�find�decode)r& r( r) �pr* r* r+ �nts� s r1 c C s� | d d k r� d } x: t t | � d � D]" } | d K} | | | d 7} q- W| d d k r� d t | � d | } q� nR y1 t | d d � } t | j � p� d d � } Wn t k
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z_LowLevelFile.__init__c C s t j | j � d S)N)rv �closer| )r} r* r* r+ r� ? s z_LowLevelFile.closec C s t j | j | � S)N)rv rP r| )r} r r* r* r+ rP B s z_LowLevelFile.readc C s t j | j | � d S)N)rv rQ r| )r} r& r* r* r+ rQ E s z_LowLevelFile.writeN)re rf rg rh r r� rP rQ r* r* r* r+ rr 0 s
rr c @ s� e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d
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d d � Z d d � Z d S) �_Streama� Class that serves as an adapter between TarFile and
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r z seeking backwards is not allowed)r� rO r� r9 rP rl )r} r� rT rU r? r* r* r+ �seek� s z _Stream.seekNc C s| | d k rT g } x- | j | j � } | s1 Pn | j | � q Wd j | � } n | j | � } | j t | � 7_ | S)z�Return the next size number of bytes from the stream.
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Nr� )�_readr� �append�joinr� r$ )r} r �trJ r* r* r+ rP s z _Stream.readc C s� | j d k r | j | � St | j � } x� | | k r� | j | j � } | sV Pn y | j j | � } Wn! | j k
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N)r$ rJ r� rP r� )r} r r� rJ r* r* r+ Z__read2 s z_Stream.__read)re rf rg rh r r� r� rQ r� r� r� r� r� rP r� r� r* r* r* r+ r� H s F
r� c @ sF e Z d Z d Z d d � Z d d � Z d d � Z d d � Z d
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c C s" | | _ | j j t � | _ d S)N)r� rP � BLOCKSIZErJ )r} r� r* r* r+ r G s z_StreamProxy.__init__c C s | j j | _ | j S)N)r� rP rJ )r} r r* r* r+ rP K s z_StreamProxy.readc C sj | j j d � r d S| j d d � d k rL | j d d � d k rL d S| j j d � rb d Sd
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d d � Z d d � Z d S)� _FileInFilezA thin wrapper around an existing file object that
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Nc C s, | | _ | | _ | | _ d | _ t | d d � | _ d | _ | d k r` d | f g } n d | _ g | _ d } | j } xs | D]k \ } } | | k r� | j j d | | d f � n | j j d | | | | f � | | 7} | | } q� W| | j k r(| j j d | | j d f � n d S)Nr r~ FT)
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)r� )r} r* r* r+ r� � s z_FileInFile.tellc C s� | t j k r0 t t | d � | j � | _ n� | t j k r� | d k rg t | j | d � | _ q� t | j | | j � | _ nC | t j k r� t t | j | | j � d � | _ n t d � � | j S)z(Seek to a position in the file.
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| 7} | | 8} | j | 7_ qA W| S)z!Read data from the file.
Nr� r r zunexpected end of data) r r� r� r� r� r$ r� r� rP rj r% ) r} r rJ �data�start�stopr� r' rV r* r* r+ rP � s.
z_FileInFile.readc C s5 | j t | � � } | | d t | � � <t | � S)N)rP r$ )r} rV rJ r* r* r+ �readinto� s z_FileInFile.readintoc C s
d | _ d S)NT)r� )r} r* r* r+ r� � s z_FileInFile.close)re rf rg rh r r� r� r� r� r� r� r� r� rP r� r� r* r* r* r+ r� ` s r� c s" e Z d Z � f d d � Z � S)� ExFileObjectc s5 t | j | j | j | j � } t � j | � d S)N)r� r� � offset_datar �sparse�superr )r} �tarfile�tarinfor� )� __class__r* r+ r � s zExFileObject.__init__)re rf rg r r* r* )r� r+ r� � s r� c @ sP e Z d Z d Z di Z d d d � Z d d � Z d d � Z e e e � Z d d � Z
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d# d$ � Z e e d% d& d' � Z d( d) � Z d* d+ � Z d, d- � Z e d. d/ � � Z d0 d1 � Z e d2 d3 � � Z e d4 d5 � � Z e d6 d7 � � Z e d8 d9 � � Z e d: d; � � Z e d< d= � � Z d> d? � Z d@ dA � Z dB dC � Z! dD dE � Z" dF dG � Z# dH dI � Z$ dJ dK � Z% dL dM � Z& dN dO � Z' dP dQ � Z( dR dS � Z) dT dU � Z* dV dW � Z+ dX dY � Z, dZ d[ � Z- d\ d] � Z. d^ d_ � Z/ d` da � Z0 db dc � Z1 dd de � Z2 df dg � Z3 dh S)jr a Informational class which holds the details about an
archive member given by a tar header block.
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r~ r\ r r r r �chksum�type�linknamer r! �devmajor�devminorr� r� � pax_headersr� r� �_sparse_structs� _link_targetr� c C s� | | _ d | _ d | _ d | _ d | _ d | _ d | _ t | _ d | _ d | _
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d | _ d | _ d | _ i | _ d S)zXConstruct a TarInfo object. name is the optional name
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i� r r� N)r~ r\ r r r r r� �REGTYPEr� r� r r! r� r� r� r� r� r� )r} r~ r* r* r+ r � s" zTarInfo.__init__c C s | j S)N)r~ )r} r* r* r+ �_getpath� s zTarInfo._getpathc C s
| | _ d S)N)r~ )r} r~ r* r* r+ �_setpath� s zTarInfo._setpathc C s | j S)N)r� )r} r* r* r+ � _getlinkpath s zTarInfo._getlinkpathc C s
| | _ d S)N)r� )r} r� r* r* r+ � _setlinkpath s zTarInfo._setlinkpathc C s d | j j | j t | � f S)Nz<%s %r at %#x>)r� re r~ �id)r} r* r* r+ �__repr__ s zTarInfo.__repr__c C s� i
| j d 6| j d @d 6| j d 6| j d 6| j d 6| j d 6| j d 6| j d 6| j d
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k r� | d j d � r� | d d 7<n | S)z9Return the TarInfo's attributes as a dictionary.
r~ i� r\ r r r r r� r� r� r r! r� r� �/)r~ r\ r r r r r� r� r� r r! r� r� �DIRTYPEr� )r} �infor* r* r+ �get_info
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$zTarInfo.get_info�surrogateescapec C sv | j � } | t k r+ | j | | | � S| t k rJ | j | | | � S| t k rf | j | | � St d � � d S)z<Return a tar header as a string of 512 byte blocks.
zinvalid formatN)r� � USTAR_FORMAT�create_ustar_headerrB �create_gnu_header�
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TarInfo.tobufc C s t | d <t | d � t k r/ t d � � n t | d � t k ri | j | d � \ | d <| d <n | j | t | | � S)z3Return the object as a ustar header block.
�magicr� zlinkname is too longr~ �prefix)� POSIX_MAGICr$ � LENGTH_LINKr< � LENGTH_NAME�_posix_split_name�_create_headerr� )r} r� r( r) r* r* r+ r� 0 s
$zTarInfo.create_ustar_headerc C s� t | d <d } t | d � t k rI | | j | d t | | � 7} n t | d � t k r� | | j | d t | | � 7} n | | j | t | | � S)z:Return the object as a GNU header block sequence.
r� r� r� r~ ) � GNU_MAGICr$ r� �_create_gnu_long_header�GNUTYPE_LONGLINKr� �GNUTYPE_LONGNAMEr� rB )r} r� r( r) rJ r* r* r+ r� = s
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r� | | | | <w> Yn Xt | | � | k r> | | | | <q> q> Wx� d D]� \ } } | | k r� d | | <q� n | | } d | k o d | d k n s5t | t � r� t
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| t d d � S) z�Return the object as a ustar header block. If it cannot be
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r� r~ r r� r r � r! r6 r7 r r4 r r � r r r r� r� )�unamer� r� )�gnamer� r� �zuidr4 �zgidr4 �zsizer� �zmtimer� )r� r� r� r� )r� r� �copyr� r� r# �UnicodeEncodeErrorr$ �
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LENGTH_PREFIXr$ r� r< )r} r~ r� r* r* r+ r� � s zTarInfo._posix_split_namec C s� t | j d d � d | | � t | j d d � d @d | � t | j d d � d | � t | j d d � d | � t | j d
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| j d t � t | j d d � d | | � | j d t � t | j d d � d | | � t | j d d � d | | � t | j d d � d | � t | j d d � d | � t | j d d � d | | � g } t j d t d j | � � } t | t d � � d } | d d � t
d | d � | d d � } | S)!z�Return a header block. info is a dictionary with file
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r~ r� r r\ r i� r4 r r r r� r s r� r� r� r r� r! r� r� r� r z%dsr� Nil z%06o r6 ie i����i����) r, �getrG r� r� rI r� r� r� rK rA )r� rF r( r) �partsrJ r� r* r* r+ r� � s& $ /zTarInfo._create_headerc C s@ t t | � t � \ } } | d k r< | t | t 7} n | S)zdReturn the string payload filled with zero bytes
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z"TarInfo._create_pax_generic_headerc C sf t | � d k r! t d � � n t | � t k rB t d � � n | j t � t k rf t d � � n t | d d � � } | t | � k r� t d � � n | � } t
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| | |
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r z empty headerztruncated headerzend of file header� � z bad checksumr �l �t �| � � i i i) iI iQ iY i� r� i� r� r� � i� i� i� )$r$ rn r� ro �countr% rp r@ rK r= r1 r~ r\ r r r r r� r� r� r r! r� r� �AREGTYPEr� r� �GNUTYPE_SPARSEr9 r< r� �boolr� �isdir�rstrip� GNU_TYPES)r rJ r( r) r� �objr� r� �structsr? r� �numbytes�
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) r� rP r� r) r( r) r� r� � _proc_member)r r� rJ r$ r* r* r+ � fromtarfile: s zTarInfo.fromtarfilec C st | j t t f k r" | j | � S| j t k r> | j | � S| j t t t f k rc | j | � S| j
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zTarInfo._proc_sparsec C s� | j j | j | j � � } | j t k r9 | j } n | j j � } t j d | � } | d k r� | j
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hdrcharsetZBINARYs (\d+) ([^=]+)=r r z missing or bad subsequent headerzGNU.sparse.mapzGNU.sparse.sizezGNU.sparse.major�1zGNU.sparse.minorr8 r )$r� rP r3 r r� r r� r �re�search�groupr/ r r( �compile�match�groupsr: r^ r� �_decode_pax_fieldr) �PAX_NAME_FIELDSr+ rm rq �_proc_gnusparse_01�_proc_gnusparse_00�_proc_gnusparse_10r r. r4 r� r� r1 r2 )r} r� rJ r� r= r7 r( Zregexr� r' r r r5 r� r* r* r+ r/ � s` .
* zTarInfo._proc_paxc C s� g } x6 t j d | � D]" } | j t | j d � � � q Wg } x6 t j d | � D]" } | j t | j d � � � qX Wt t | | � � | _ d S)z?Process a GNU tar extended sparse header, version 0.0.
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<listcomp> s z.TarInfo._proc_gnusparse_01.<locals>.<listcomp>zGNU.sparse.map�,Nr r )�splitrE rF r� )r} r5 r� r� r* r* r+ rA s zTarInfo._proc_gnusparse_01c C s� d } g } | j j t � } | j d d � \ } } t | � } xj t | � | d k r� d | k r� | | j j t � 7} n | j d d � \ } } | j t | � � qE W| j j � | _ t t
| d d d � | d d d � � � | _ d S)z?Process a GNU tar extended sparse header, version 1.0.
Ns
r r ) r� rP r� rK r: r$ r� r� r� rE rF r� )r} r5 r� r� Zfieldsr� rJ Znumberr* r* r+ rC s zTarInfo._proc_gnusparse_10c
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zTarInfo._decode_pax_fieldc C s0 t | t � \ } } | r( | d 7} n | t S)z_Round up a byte count by BLOCKSIZE and return it,
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r )rO r� )r} r rT rU r* r* r+ r3 E s
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| j t k S)N)r� �BLKTYPE)r} r* r* r+ �isblkZ s z
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TarInfo.isdevN)znamezmodezuidzgidzsizezmtimezchksumztypezlinknamezunamezgnamezdevmajorzdevminorzoffsetz offset_dataz pax_headerszsparseztarfilez_sparse_structsz _link_target)4re rf rg rh � __slots__r r� r� �propertyr r� r� r r� r� �DEFAULT_FORMAT�ENCODINGr� r� r� r� � classmethodr
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f c @ s� e Z d Z d Z d Z d Z d Z d Z e Z e
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� � Z e d d d d d � � Z e d d d d d � � Z e d d d d d � � Z i d d 6d d 6d d 6d d 6Z d d � Z d d � Z d! d" � Z d# d$ � Z d d d d% d& � Z d' d( d) � Z d d' d d* d d+ d, �Z d d- d. � Z! d/ d d0 d1 � Z" d2 d' d3 d4 � Z# d5 d6 � Z$ d' d7 d8 � Z% d9 d: � Z& d; d< � Z' d= d> � Z( d? d@ � Z) dA dB � Z* dC dD � Z+ dE dF � Z, dG dH � Z- dI dJ � Z. dK dL � Z/ d d dM dN � Z0 dO dP � Z1 d dQ dR � Z2 dS dT � Z3 dU dV � Z4 dW dX � Z5 dY dZ � Z6 d[ d\ � Z7 d S)]r z=The TarFile Class provides an interface to tar archives.
r Fr Nrs r� c
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| _ n i | _ | d k r | | _ n | d k r| | _ n d | _ g | _ d | _ | j j � | _ i | _ yF| j d k r{d | _ | j � | _ n | j d k r,x� | j j! | j � y& | j j" | � } | j j# | � Wq�t$ k
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r$} z t& t | � � � WYd d } ~ Xq�Xq�Wn | j d
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file or 'w' to create a new file overwriting an existing one. `mode'
defaults to 'r'.
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�rbrs zr+b�a�wbrt z mode must be 'r', 'a' or 'w'FNr~ r\ T�aw),r< r\ �_moderv r �exists� bltn_openr� r{ r r~ r rA �abspathr� rF r� � dereference� ignore_zerosr( r) r� r� �debug�
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K sG | r | r t d � � n | d k r� x� | j D]� } t | | j | � } | d k rj | j � } n y | | d | | � SWq3 t t f k
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| S| d k r7| j | | | | � St d � � d S)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
'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 openrs �r:*Nz%file could not be opened successfully�:r r� zunknown compression type %r�|rt zmode must be 'r' or 'w'Fre zundiscernible mode)rs ru )rs rt )re rt ) r< � OPEN_METHr` r� rj rk r� rK r� r� r� �taropen)
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z TarFile.openc K s. | d k r t d � � n | | | | | � S)zCOpen uncompressed tar archive name for reading or writing.
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r| j � | d k r t d � � n � Yn | j � � Yn Xd | _
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rs rt zmode must be 'r' or 'w'r Nz gzip module is not availablerV znot a gzip fileF)rs rt ) r< �gzipZGzipFiler� �AttributeErrorrk r� rj ry r� r� )r r~ r\ r� �
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r� | j � | d k r� t d � � n � Yn | j � � Yn Xd | _
| S) zlOpen bzip2 compressed tar archive name for reading or writing.
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rs rt zmode must be 'r' or 'w'.r Nzbz2 module is not availabler znot a bzip2 fileF)rs rt ) r< r� r� rk ZBZ2Filery r� �EOFErrorr� rj r� )r r~ r\ r� r rz r� r� r* r* r+ �bz2opene s(
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rK t d � � Yn X| j | p[ | | d | �} y | j | | | | � } WnW | j t f k
r� | j � | d k r� t d � � n � Yn | j � � Yn Xd | _
| S) zkOpen lzma compressed tar archive name for reading or writing.
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rs rt zmode must be 'r' or 'w'r Nz lzma module is not available�presetznot an lzma fileF)rs rt ) r< r� r� rk ZLZMAFilery r� r� r� rj r� )r r~ r\ r� r� rz r� r� r* r* r+ �xzopen� s&
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� n Xd S)zlClose the TarFile. In write-mode, two finishing zero blocks are
appended to the archive.
NTrg r r ) r� r\ r� rQ r% r� r� rO �
RECORDSIZEr� r� )r} rT rU r* r* r+ r� � s " z
TarFile.closec C s2 | j | � } | d k r. t d | � � n | 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)�
_getmember�KeyError)r} r~ r� r* r* r+ � getmember� s zTarFile.getmemberc C s' | j � | j s | j � n | j S)z�Return the members of the archive as a list of TarInfo objects. The
list has the same order as the members in the archive.
)�_checkrq �_loadrp )r} r* r* r+ �
getmembers� s
zTarFile.getmembersc C s d d � | j � D� S)z�Return 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 � q Sr* )r~ )rG r� r* r* r+ rI � s z$TarFile.getnames.<locals>.<listcomp>)r� )r} r* r* r+ �getnames� s zTarFile.getnamesc C s^ | j d � | d k r% | j } n | d k r: | } n t j j | � \ } } | j t j d � } | j d � } | j � } | | _ | d k r� t
t d � r� | j r� t j | � } q� t j
| � } n t j | j � � } d } | j } t
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| j | } qt }
| d r| | j | <qn� t
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n d S| | _ | | _# | j$ | _% | j& | _' |
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| _, | | _- t. r�y t. j/ | j% � d | _0 Wq�t1 k
r�Yq�Xn t2 r�y t2 j3 | j' � d | _4 Wq�t1 k
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t d � rZt j5 | j6 � | _7 t j8 | j6 � | _9 qZn | S)
aO Create a TarInfo object for either the file `name' or the file
object `fileobj' (using os.fstat on its file descriptor). You can
modify some of the TarInfo's attributes before you add it using
addfile(). If given, `arcname' specifies an alternative name for the
file in the archive.
rg Nr� �lstatr� r r �major�minor):r� r~ rv r �
splitdriver� �sep�lstripr� r� r{ rl r� rZ �fstat�fileno�st_mode�S_ISREG�st_ino�st_dev�st_nlinkrr rT r� �S_ISDIRr� �S_ISFIFOrZ �S_ISLNKrR �readlink�S_ISCHRrV �S_ISBLKrX r\ �st_uidr �st_gidr �st_sizer �st_mtimer r� r� �pwd�getpwuidr r� �grpZgetgrgidr! r� �st_rdevr� r� r� ) r} r~ �arcnamer� Zdrvr� Zstatresr� ZstmdZinoder� r* r* r+ �
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zTarFile.gettarinfoTc C sK | j � x:| D]2} | r� t t j | j � � t d | j pH | j | j pW | j f � | j � sw | j
� r� t d d | j | j f � n t d | j
� t d t j | j � d d � � n t | j | j � r� d n d � | r<| j � rt d
| j � n | j � r<t d | j � q<n t � q Wd S) z�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.
z%s/%sz%10sz%d,%dz%10dz%d-%02d-%02d %02d:%02d:%02dNr� r� r� z-> zlink to )r� rd rZ r[ r\ r r r! r rW rY r� r� r r� Z localtimer r~ r! rS r� rU rc )r} �verboser� r* r* r+ rE ; s&
!# z TarFile.list�filterc
C s� | j d � | d k r" | } n | d k rt d d l } | j d t d � | | � rt | j d d | � d Sn | j d k r� t j j | � | j k r� | j d d | � d S| j d | � | j | | � } | d k r� | j d d | � d S| d k r;| | � } | d k r;| j d d | � d Sn | j
� rrt | d
� � } | j | | � Wd QXn� | j
� r�| j | � | r�xT t j | � D]@ } | j t j j | | � t j j | | � | | d | �q�Wq�n
| j | � d S) 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.
rg Nr z use the filter argument insteadr ztarfile: Excluded %rztarfile: Skipped %rr z tarfile: Unsupported type %rrd r� )r� rW rX rY �_dbgr~ rv r rk r� r1 rj �addfiler! �listdir�addr� ) r} r~ r� Z recursiveZexcluder� rW r� �fr* r* r+ r� X sB
*
*z TarFile.addc C s� | j d � t j | � } | j | j | j | j � } | j j | � | j t | � 7_ | d k r� t
| | j | j � t | j t
� \ } } | d k r� | j j t t
| � | d 7} n | j | t
7_ n | j j | � d S)a] Add the TarInfo object `tarinfo' to the archive. If `fileobj' is
given, tarinfo.size bytes are read from it and added to the archive.
You can create TarInfo objects using gettarinfo().
On Windows platforms, `fileobj' should always be opened with mode
'rb' to avoid irritation about the file size.
rg Nr r )r� r r� rF r( r) r� rQ r� r$ rN r rO r� r% rp r� )r} r� r� rJ rT rU r* r* r+ r� � s
zTarFile.addfile�.c C sO g } | d k r | } n x_ | D]W } | j � r\ | j | � t j | � } d | _ n | j | | d | j � �q" W| j d d d � � | j � x� | D]� } t j j | | j
� } y4 | j | | � | j | | � | j
| | � Wq� t k
rF} z. | j d k r � n | j d d | � WYd d } ~ Xq� Xq� Wd S) aM 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().
Ni� � set_attrs�keyc S s | j S)N)r~ )re r* r* r+ �<lambda>� s z$TarFile.extractall.<locals>.<lambda>r z tarfile: %s)r! r� r r\ �extract�sort�reverserv r r� r~ �chown�utime�chmodri ro r� )r} r rp Z directoriesr� �dirpathrt r* r* r+ �
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zTarFile.extractallr� c C sa | j d � t | t � r. | j | � } n | } | j � r^ t j j | | j � | _ n y, | j
| t j j | | j � d | �Wn� t k
r} zc | j
d k r� � nI | j d k r� | j d d | j � n | j d d | j | j f � WYd d } ~ XnN t k
r\} z. | j
d k r6� n | j d d | � WYd d } ~ Xn Xd S)ax 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.
rs r� r Nr z tarfile: %sztarfile: %s %r)r� r r r� rU rv r r� r� r� �_extract_memberr~ r� ro �filenamer� �strerrorri )r} �memberr r� r� rt r* r* r+ r� � s&
! 2zTarFile.extractc C s� | j d � t | t � r. | j | � } n | } | j � sO | j t k r_ | j | | � S| j � sw | j � r� t | j
t � r� t d � � q� | j
| j | � � Sn d Sd S)z�Extract a member from the archive as a file object. `member' may be
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link, an io.BufferedReader object is returned. Otherwise, None is
returned.
rs z'cannot extract (sym)link as file objectN)r� r r r� r1 r� r2 �
fileobjectrU rS r� r� rl � extractfile�_find_link_target)r} r� r� r* r* r+ r� � s
zTarFile.extractfilec C s� | j d � } | j d t j � } t j j | � } | r_ t j j | � r_ t j | � n | j � sw | j � r� | j
d d | j | j f � n | j
d | j � | j
� r� | j | | � n� | j � r� | j | | � n� | j � r
| j | | � n� | j � s"| j � r5| j | | � n] | j � sM| j � r`| j | | � n2 | j t k r�| j | | � n | j | | � | r�| j | | � | j � s�| j | | � | j | | � q�n d S)z\Extract the TarInfo object tarinfo to a physical
file called targetpath.
r� r z%s -> %sN) r" r� rv r� r �dirnameri �makedirsrU rS r� r~ r� r1 �makefiler! �makedirr[ �makefiforW rY �makedev�makelinkr� r2 � makeunknownr� r� r� )r} r� �
targetpathr� Z upperdirsr* r* r+ r� s4 # zTarFile._extract_memberc C s- y t j | d � Wn t k
r( Yn Xd S)z,Make a directory called targetpath.
i� N)rv �mkdir�FileExistsError)r} r� r� r* r* r+ r� G s
zTarFile.makedirc
C s� | j } | j | j � t | d � �� } | j d k rw xP | j D], \ } } | j | � t | | | t � qD Wn t | | | j t � | j | j � | j � Wd QXd S)z'Make a file called targetpath.
rf N) r� r� r� rj r� rN rj r �truncate)r} r� r� �source�targetr� r r* r* r+ r� Q s
zTarFile.makefilec C s+ | j | | � | j d d | j � d S)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� r* r* r+ r� ` s zTarFile.makeunknownc C s/ t t d � r t j | � n t d � � d S)z'Make a fifo called targetpath.
�mkfifoz fifo not supported by systemN)r{ rv r� ri )r} r� r� r* r* r+ r� h s zTarFile.makefifoc C s� t t d � s t t d � r/ t d � � n | j } | j � rT | t j O} n
| t j O} t j | | t j | j
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�mknodr� z'special devices not supported by systemN) r{ rv ri r\ rY rZ �S_IFBLK�S_IFCHRr� r� r� r� )r} r� r� r\ r* r* r+ r� p s
zTarFile.makedevc C s� yj | j � r% t j | j | � nD t j j | j � rP t j | j | � n | j | j | � | � WnP t
k
r� y | j | j | � | � Wn t k
r� t d � � Yn XYn Xd S)z�Make 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)
rS rv �symlinkr� r ri r� �linkr� r� �symlink_exceptionr� ri )r} r� r� r* r* r+ r� s
zTarFile.makelinkc C s t rt t d � rt j � d k ry t j | j � d } Wn t k
r^ | j } Yn Xy t j | j
� d } Wn t k
r� | j } Yn XyH | j � r� t t d � r� t j
| | | � n t j | | | � Wqt k
r} z t d � � WYd d } ~ XqXn d S)z6Set owner of targetpath according to tarinfo.
�geteuidr r �lchownzcould not change ownerN)r� r{ rv r� r� Zgetgrnamr! r� r �getpwnamr r rS r� r� r� ri )r} r� r� �g�urt r* r* r+ r� � s '
z
TarFile.chownc C sa t t d � r] y t j | | j � Wq] t k
rY } z t d � � WYd d } ~ Xq] Xn d S)zASet file permissions of targetpath according to tarinfo.
r� zcould not change modeN)r{ rv r� r\ r� ri )r} r� r� rt r* r* r+ r� � s
z
TarFile.chmodc C sk t t d � s d Sy t j | | j | j f � Wn1 t k
rf } z t d � � WYd d } ~ Xn Xd S)zBSet modification time of targetpath according to tarinfo.
r� Nz"could not change modification time)r{ rv r� r r� ri )r} r� r� rt r* r* r+ r� � s z
TarFile.utimec C sh | j d � | j d k r2 | j } d | _ | S| j | j j � k r� | j j | j d � | j j d � s� t d � � q� n d } x�y | j j | � } Wn�t
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r} z@ | j r� | j d d | j | f � | j t
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7_ w� n$ | j d k rwt t | � � � n WYd d } ~ Xn� t k
r�| j d k r�t d � � n Yn t k
r } z) | j d k r�t t | � � � n WYd d } ~ Xn7 t k
r6} z t t | � � � WYd d } ~ Xn XPq� W| d k r[| j j | � n d | _ | S)
z�Return the next member of the archive as a TarInfo object, when
TarFile is opened for reading. Return None if there is no more
available.
ZraNr zunexpected end of datar z0x%X: %sr z
empty fileT)r� rs r� r� r� r� rP rj r� r+ rp rm r� r� r= r rn ro rq rp r� rq )r} �mr� rt r* r* r+ r5 � sL
'
'% z TarFile.nextc C s� | j � } | d k r4 | d | j | � � } n | rO t j j | � } n xK t | � D]= } | r� t j j | j � } n | j } | | k r\ | Sq\ Wd S)z}Find an archive member by name from bottom to top.
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N)r� �indexrv r �normpath�reversedr~ )r} r~ r� � normalizerp r� Z member_namer* r* r+ r� � s zTarFile._getmemberc C s0 x | j � } | d k r Pq q Wd | _ d S)zWRead through the entire archive file and look for readable
members.
NT)r5 rq )r} r� r* r* r+ r� s
z
TarFile._loadc C sW | j r" t d | j j � � n | d k rS | j | k rS t d | j � � n d S)znCheck if TarFile is still open, and if the operation's mode
corresponds to TarFile's mode.
z %s is closedNzbad operation for mode %r)r� r� r� re r\ )r} r\ r* r* r+ r� s zTarFile._checkc C s� | j � rE d j t d t j j | j � | j f � � } d } n | j } | } | j | d | d d �} | d k r� t d | � � n | S)zZFind the target member of a symlink or hardlink member in the
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r� Nr� r� Tzlinkname %r not found)
rS r� r� rv r r� r~ r� r� r� )r} r� r� �limitr� r* r* r+ r� s 0 zTarFile._find_link_targetc C s$ | j r t | j � St | � Sd S)z$Provide an iterator object.
N)rq �iterrp �TarIter)r} r* r* r+ �__iter__2 s
zTarFile.__iter__c C s) | | j k r% t | d t j �n d S)z.Write debugging output to sys.stderr.
�fileN)rn rc ra �stderr)r} �level�msgr* r* r+ r� : s z TarFile._dbgc C s | j � | S)N)r� )r} r* r* r+ � __enter__@ s
zTarFile.__enter__c C s? | d k r | j � n" | j s2 | j j � n d | _ d S)NT)r� r� r� r� )r} r� r � tracebackr* r* r+ �__exit__D s
zTarFile.__exit__)8re rf rg rh rn rl rm ro r` rF ra r( r) r r� r� r� r rb r� r ry r� r� r� rx r� r� r� r� r� rE r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r5 r� r� r� r� r� r� r� r� r* r* r* r+ r d st kO!
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c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) r� zMIterator Class.
for tarinfo in TarFile(...):
suite...
c C s | | _ d | _ d S)z$Construct a TarIter object.
r N)r� r� )r} r� r* r* r+ r V s zTarIter.__init__c C s | S)z Return iterator object.
r* )r} r* r* r+ r� [ s zTarIter.__iter__c C s� | j d k r3 | j j d k r3 | j j � } np | j t | j j � k rd | j j | j } n? | j j s� | j j � } | s� d | j _ t � q� n t � | j d 7_ | S)z�Return the next item using TarFile's next() method.
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� � q�n | j d" | j � � d S);Nr z3A simple command line interface for tarfile module.� descriptionz-vz --verbose�action�
store_true�defaultF�helpzVerbose outputz-lz--list�metavar� <tarfile>zShow listing of a tarfilez-ez --extract�nargs�+� <output_dir>z Extract tarfile into target dirz-cz--create�<name>�<file>zCreate tarfile from sourcesz-tz--testzTest if a tarfile is validrs r� z{!r} is a tar archive.r z{!r} is not a tar archive.
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__author__Z__date__Z __cvsid__� __credits__�builtinsr rj ra rv r� rM rZ r� rI r r9 r� r� r� r~ �NotImplementedErrorr� r� � NameError�__all__r% r� r� r� r� r� r� r r� r rT rR rV rX r� rZ ZCONTTYPEr� r� r r r r. r� rB r� r` r2 rP r# rM r@ r r: rN r~ ra �getfilesystemencodingr, r1 r@ rG rK rN r[ rd � Exceptionr ri rj rk rl rm rn ro rp r= rq rr r� �objectr� r� �BufferedReaderr� r r r� r r re r* r* r* r+ �<module> s�
� h � � �� � � �) Z 