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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.� )�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 | } nR y1 t | d d � } t | j � p� d d � } Wn t k
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signed_chksumr* r* r+ � calc_chksums� s rK c C s� | d k r d S| d k r0 t j | | � d Sd } t | | � \ } } xN t | � D]@ } | j | � } t | � | k r� | d � � | j | � qX W| d k r� | j | � } t | � | k r� | d � � | j | � d S)zjCopy length bytes from fileobj src to fileobj dst.
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_LowLevelFilez�Low-level file object. Supports reading and writing.
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c C sb d t j d t j t j Bt j Bi | } t t d � rF | t j O} t j | | d � | _ d S)N�r�w�O_BINARYi� ) �os�O_RDONLY�O_WRONLY�O_CREAT�O_TRUNC�hasattrru r �fd)�self�namer\ r* r* r+ �__init__6 s
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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c C s{ d | _ | d k r- t | | � } d | _ | d k rQ t | � } | j � } | pZ d | _ | | _ | | _ | | _ | | _ d | _ d | _
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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 sy | d k rQ g } x* | j | j � } | s. P| 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 � } | sS Py | j j | � } Wn! | j k
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r� zinvalid compressed dataN) r� r� r$ r� r� r� Z
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_Stream._readc C s� t | j � } xK | | k r\ | j j | j � } | s: P| j | 7_ | t | � 7} q W| j d | � } | j | d � | _ | S)zsReturn size bytes from stream. If internal buffer is empty,
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N)r$ rJ r� rP r� )r} r r� rJ r* r* r+ Z__read, 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 A s z_StreamProxy.__init__c C s | j j | _ | j S)N)r� rP rJ )r} r r* r* r+ rP E 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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z_FileInFile.__init__c C s d S)Nr* )r} r* r* r+ r� y s z_FileInFile.flushc C s d S)NTr* )r} r* r* r+ �readable| s z_FileInFile.readablec C s d S)NFr* )r} r* r* r+ �writable s z_FileInFile.writablec C s
| j j � S)N)r� �seekable)r} r* r* r+ r� � s z_FileInFile.seekablec C s | j S)z*Return the current file position.
)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.
r zInvalid argument) �io�SEEK_SET�min�maxr r� �SEEK_CUR�SEEK_ENDr< )r} r� �whencer* r* r+ r� � s ! ( z_FileInFile.seekc C sf | d k r | j | j } n t | | j | j � } d } x!| d k raxs | j | j \ } } } } | | j k o� | k n r� PqP | j d 7_ | j t | j � k rP d | _ qP Wt | | | j � } | r7| j j | | j | � | j j | � } t | � | k r*t d � � | | 7} n | t
| 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� Z 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
d d � Z e e
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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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TarFile.getmembers() and TarFile.gettarinfo() and are
usually created internally.
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 | _
d | _ d | _ d | _
d | _ d | _ d | _ i | _ d S)zXConstruct a TarInfo object. name is the optional name
of the member.
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� d | j d | j d @d | j d | j d | j d | j d | j d | j d
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k r� | d j d � r� | d d 7<| S)z9Return the TarInfo's attributes as a dictionary.
r~ 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� �DIRTYPEr� )r} �infor* r* r+ �get_info s
$zTarInfo.get_info�surrogateescapec C sv | j � } | t k r+ | j | | | � S| t k rJ | j | | | � S| t k rf | j | | � St d � � d S)z<Return a tar header as a string of 512 byte blocks.
zinvalid formatN)r� � USTAR_FORMAT�create_ustar_headerrB �create_gnu_header�
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TarInfo.tobufc C s� t | d <t | d j | | � � t k r8 t d � � t | d j | | � � t k r� | j | d | | � \ | d <| d <| j | t | | � S)z3Return the object as a ustar header block.
�magicr� zlinkname is too longr~ �prefix) � POSIX_MAGICr$ r# � LENGTH_LINKr< � LENGTH_NAME�_posix_split_name�_create_headerr� )r} r� r( r) r* r* r+ r� * s
" "'zTarInfo.create_ustar_headerc C s� t | d <d } t | d j | | � � t k rR | | j | d t | | � 7} t | d j | | � � t k r� | | j | d t | | � 7} | | j | t | | � S)z:Return the object as a GNU header block sequence.
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� GNU_MAGICr$ r# r� �_create_gnu_long_header�GNUTYPE_LONGLINKr� �GNUTYPE_LONGNAMEr� rB )r} r� r( r) rJ r* r* r+ r� 7 s
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componentsr? 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
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r r ) r� rP r� r r: r$ r� r� r� rD rE r� )r} r4 r� r� Zfieldsr� rJ Znumberr* r* r+ rB s zTarInfo._proc_gnusparse_10c
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W| j � | _ d S) zoReplace fields with supplemental information from a previous
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zTarInfo._decode_pax_fieldc C s- t | t � \ } } | r% | d 7} | t S)z_Round up a byte count by BLOCKSIZE and return it,
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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 d d d d d d d d i Z d d � Z d d � Z d! d" � Z d# d$ � Z d d d d% d& � Z d' d( d d) d* �Z d d' d d+ d d, d- �Z d d. d/ � Z! d0 d d1 d d2 d3 �Z" d4 d' d1 d d5 d6 �Z# d7 d8 � Z$ d' d 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. dM dN � Z/ d d dO dP � Z0 dQ dR � Z1 d dS dT � Z2 dU dV � Z3 dW dX � Z4 dY dZ � Z5 d[ d\ � Z6 d] d^ � Z7 d S)_r z=The TarFile Class provides an interface to tar archives.
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| _ | j j � | _ i | _ y:| j d k rZd | _ | j � | _ | j d k rx� | j j! | j � y& | j j" | � } | j j# | � Wqlt$ k
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r} z t& t | � � � WYd d } ~ XqlXqlW| j d k rid | _ | j ri| j j' | j j( � � } | j j) | � | j t* | � 7_ Wn* | j s�| j j+ � d | _ � Yn Xd S)a� Open an (uncompressed) tar archive `name'. `mode' is either 'r' to
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file or 'w' to create a new file overwriting an existing one. `mode'
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rs �rb�azr+brt �wbrG Zxbz!mode must be 'r', 'a', 'w' or 'x'FNr~ r\ T)rc rt rG ),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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S| d k rI� j | | | | � St d � � d S)a� Open a tar archive for reading, writing or appending. Return
an appropriate TarFile class.
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'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 openrs �r:*c s � j | d k S)N�taropen)� OPEN_METH)r� )r r* r+ �not_compressed s z$TarFile.open.<locals>.not_compressed�keyNz%file could not be opened successfully�:r r� zunknown compression type %r�|rt zmode must be 'r' or 'w'Frc rG zundiscernible mode)rs rr )rs rt )rc rt rG )
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r� | d k r� | d k r� t d � � � Yn Xy | j | | | | � } WnK t k
r| j � | d k r t d � � � Yn | j � � Yn Xd
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rs rt rG z mode must be 'r', 'w' or 'x'r Nz gzip module is not availablerV znot a gzip fileF)rs rt rG ) r< �gzipZGzipFiler� �AttributeErrorrk r� rj rs r� r� )r r~ r\ r� �
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zTarFile.gzopenc K s� | d k r t d � � y d d l } Wn t k
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| _
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rs rt rG z mode must be 'r', 'w' or 'x'r Nzbz2 module is not availabler znot a bzip2 fileF)rs rt rG ) r< r� r� rk ZBZ2Filers r� �EOFErrorr� rj r� )r r~ r\ r� r rz r� r� r* r* r+ �bz2openk s(
zTarFile.bz2openc K s� | d k r t d � � y d d l } Wn t k
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r� | j � | d k r� t d � � � Yn | j � � Yn Xd
| _
| S) zkOpen lzma compressed tar archive name for reading or writing.
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rs rt rG z mode must be 'r', 'w' or 'x'r Nz lzma module is not available�presetznot an lzma fileF)rs rt rG ) r< r� r� rk ZLZMAFilers r� r� r� rj r� )r r~ r\ r� r� rz r� r� r* r* r+ �xzopen� s&
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d Sd | _ zz | j d k r� | j j t t d � | j t d 7_ t | j t � \ } } | d k r� | j j t t | � Wd | j s� | j j
� Xd S) zlClose the TarFile. In write-mode, two finishing zero blocks are
appended to the archive.
NTrc rt rG r r )rc rt rG ) r� r\ r� rQ r% r� r� rO �
RECORDSIZEr� r� )r} rT rU r* r* r+ r� � s z
TarFile.closec C s/ | j | � } | d k r+ t d | � � | 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 � | 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.
)�_checkrn �_loadrm )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~ )rF r� r* r* r+ rH � s z$TarFile.getnames.<locals>.<listcomp>)r� )r} r* r* r+ �getnames� s zTarFile.getnamesc C sI | j d � | d k r" | j } | d k r4 | } t j j | � \ } } | j t j d � } | j d � } | j � } | | _ | d k r� t
t d � r� | j r� t j | � } q� t j
| � } n t j | j � � } d } | j } t
j | � r�| j | j f } | j rd| j d k rd| | j k rd| | j | k rdt }
| j | } qt }
| d r| | j | <n� t
j | � r�t }
ns t
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n d S| | _ | | _# | j$ | _% | j& | _' |
t k rT| j( | _) n d | _) | j* | _+ |
| _, | | _- t. r�y t. j/ | j% � d | _0 Wn t1 k
r�Yn Xt2 r�y t2 j3 | j' � d | _4 Wn t1 k
r�Yn X|
t t" f k rEt
t d � rEt
t d � rEt j5 | j6 � | _7 t j8 | 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 �major�minor):r� r~ rv r �
splitdriver� �sep�lstripr� r� r{ ri r� rZ �fstat�fileno�st_mode�S_ISREG�st_ino�st_dev�st_nlinkro rR r� �S_ISDIRr� �S_ISFIFOrX �S_ISLNKrP �readlink�S_ISCHRrT �S_ISBLKrV 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� Zstmd�inoder� r* r* r+ �
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zTarFile.gettarinfoTrm c C sQ | j � | d k r | } x.| D]&} | r� t t j | j � � t d | j pZ | j | j pi | j f � | j � s� | j
� r� t d d | j | j f � n t d | j
� t d t j | j � d d � � t | j | j � r� d n d � | rB| j � r%t d
| j � | j � rBt d | j � t � q# Wd S) 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� rd rZ r[ r\ r r r! r rU rW r� r� r r� Z localtimer r~ r rQ r� rS rc )r} �verboserm r� r* r* r+ rD C s*
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C s� | j d � | d k r | } | d k rn d d l } | j d t d � | | � rn | j d d | � d S| 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 r2| | � } | d k r2| j d d | � d S| j
� rjt | d
� � } | j | | � Wd QRXn� | j
� r�| j | � | r�xa t j | � D]@ } | j t j j | | � t j j | | � | | d | �q�Wn
| 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.
r� Nr z use the filter argument insteadr ztarfile: Excluded %rztarfile: Skipped %rr z tarfile: Unsupported type %rrb r� )r� rW rX rY �_dbgr~ rv r rh r� r0 rg �addfiler �listdir�addr� ) r} r~ r� Z recursiveZexcluder� rW r� �fr* r* r+ r� c sB
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*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} | j | t
7_ | j j | � d S)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� Nr r )r� r� r� rF r( r) r� rQ r� r$ rN r rO r� r% rm r� )r} r� r� rJ rT rU r* r* r+ r� � s
zTarFile.addfile�.�
numeric_ownerc C sU g } | d k r | } xb | D]Z } | j � rV | j | � t j | � } d | _ | j | | d | j � d | �q W| j d d d � � | j � x� | D]� } t j j | | j
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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
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Ni� � set_attrsr� rv c S s | j S)N)r~ )rc 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 rl r� )r} r rm r� Z directoriesr� �dirpathrq r* r* r+ �
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zTarFile.extractallr� c C sd | j d � t | t � r. | j | � } n | } | j � r[ t j j | | j � | _ y2 | j
| t j j | | j � d | 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 r9� n | j d d | � WYd d } ~ Xn Xd S) 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.
rs r� r� r Nr z tarfile: %sztarfile: %s %r)r� r r r� rS rv r r� r� r� �_extract_memberr~ r� rl �filenamer� �strerrorri )r} �memberr r� r� r� rq 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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returned.
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zTarFile.extractfilec C s� | j d � } | j d t j � } t j j | � } | r\ t j j | � r\ t j | � | j � st | 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 � r2| j | | � n] | j � sJ| j � r]| j | | � n2 | j t k r| j | | � n | j | | � | r�| j | | | � | j � s�| j | | � | j | | � d S)z\Extract the TarInfo object tarinfo to a physical
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r� r z%s -> %sN) r! r� rv r� r �dirnamerf �makedirsrS rQ r� r~ r� r0 �makefiler �makedirrY �makefiforU rW �makedev�makelinkr� r1 � makeunknownr� r� r� )r} r� �
targetpathr� r� Z upperdirsr* r* r+ r� & s4
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r( Yn Xd S)z,Make a directory called targetpath.
i� N)rv �mkdir�FileExistsError)r} r� r� r* r* r+ r� W s
zTarFile.makedirc
C s� | j } | j | j � t | d � �� } | j d k r� x7 | j D], \ } } | j | � t | | | t � qD W| j | j � | j � n t | | | j t � Wd QRXd S)z'Make a file called targetpath.
rd N) r� r� r� rg r� rN rj r �truncate)r} r� r� �source�targetr� r r* r* r+ r� a 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� p 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� x s zTarFile.makefifoc C s� t t d � s t t d � r, t d � � | j } | j � rQ | 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\ rW rZ �S_IFBLK�S_IFCHRr� r� r� r� )r} r� r� r\ r* r* r+ r� � 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)
rQ rv �symlinkr� r rf r� �linkr� r� �symlink_exceptionr� ri )r} r� r� r* r* r+ r� � s
zTarFile.makelinkc C s2 t r.t t d � r.t j � d k r.| rB | j } | j } np y t j | j � d } Wn t k
ry | 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 | | | � Wn1 t k
r-} z t d � � WYd d } ~ Xn Xd S)z�Set owner of targetpath according to tarinfo. If numeric_owner
is True, use .gid/.uid instead of .gname/.uname.
�geteuidr r �lchownzcould not change ownerN)r� r{ rv r� r r r� Zgetgrnamr! r� �getpwnamr rQ r� r� r� ri )r} r� r� r� �g�urq r* r* r+ r� � s$ '
z
TarFile.chownc C s^ t t d � rZ y t j | | j � Wn1 t k
rY } z t d � � WYd d } ~ Xn Xd S)zASet file permissions of targetpath according to tarinfo.
r� zcould not change modeN)r{ rv r� r\ r� ri )r} r� r� rq r* r* r+ r� � s
z
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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� rq r* r* r+ r� � s z
TarFile.utimec C sV | j d � | j d k r2 | j } d | _ | S| j | j j � k r | j j | j d � | j j d � s t d � � 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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r}} za | j rJ| j d d | j | f � | j t
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r�} z& | j d k r�t t | � � � WYd d } ~ Xn7 t k
r$} z t t | � � � WYd d } ~ Xn XPq� W| d k rI| 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.
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empty fileT)r� rp r� r� r� r� rP rj r� r* rp rj r� r� r= r rn ro rq rm r� rn )r} �mr� rq r* r* r+ r4 � sL
$
$% z TarFile.nextc C s� | j � } | d k r1 | d | j | � � } | rI t j j | � } xK t | � D]= } | rz t j j | j � } n | j } | | k rV | SqV Wd S)z}Find an archive member by name from bottom to top.
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N)r� �indexrv r �normpath�reversedr~ )r} r~ r� � normalizerm r� Z member_namer* r* r+ r�
s zTarFile._getmemberc C s- x | j � } | d k r Pq Wd | _ d S)zWRead through the entire archive file and look for readable
members.
NT)r4 rn )r} r� r* r* r+ r� ! s
z
TarFile._loadc C sQ | j r t d | j j � � | d k rM | j | k rM t d | j � � d S)znCheck if TarFile is still open, and if the operation's mode
corresponds to TarFile's mode.
z %s is closedNzbad operation for mode %r)r� r� r� re r\ )r} r\ r* r* r+ r� + s zTarFile._checkc C s� | j � rE d j t d t j j | j � | j f � � } d } n | j } | } | j | d | d d �} | d k r� t d | � � | S)zZFind the target member of a symlink or hardlink member in the
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r� Nr� r� Tzlinkname %r not found)
rQ r� r� rv r r� r~ r� r� r� )r} r� r� �limitr� r* r* r+ r� 4 s 0 zTarFile._find_link_targetc C s$ | j r t | j � St | � Sd S)z$Provide an iterator object.
N)rn �iterrm �TarIter)r} r* r* r+ �__iter__G s
zTarFile.__iter__c C s& | | j k r" t | d t j �d S)z.Write debugging output to sys.stderr.
�fileN)rk rc ra �stderr)r} �level�msgr* r* r+ r� O s z TarFile._dbgc C s | j � | S)N)r� )r} r* r* r+ � __enter__U s
zTarFile.__enter__c C s< | d k r | j � n | j s/ | j j � d | _ d S)NT)r� r� r� r� )r} r� r � tracebackr* r* r+ �__exit__Y s
zTarFile.__exit__)8re rf rg rh rk ri rj rl r^ rF r_ r( r) r r� r� r� r r` r� r rs r� r� r� rt r� r� r� r� r� rD r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r4 r� r� r� r� r� r� r� r� r* r* r* r+ r _ st kZ!
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c @ s: e Z d Z d Z d d � Z d d � Z d d � Z d S) r� zMIterator Class.
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c C s | | _ d | _ d S)z$Construct a TarIter object.
r N)r� r� )r} r� r* r* r+ r k s zTarIter.__init__c C s | S)z Return iterator object.
r* )r} r* r* r+ r� p s zTarIter.__iter__c C s� | j d k r3 | j j d k r3 | j j � } nm | j t | j j � k rd | j j | j } n< | j j s� | j j � } | s� d | j _ t � n t � | j d 7_ | S)z�Return the next item using TarFile's next() method.
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� � 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 rg ra rv r� rM rZ r� rI r� r8 r� r� r� r~ �NotImplementedErrorr� r� � NameError�__all__r% r� r� r� r� r� r� r
r� r rR rP rT rV r� rX ZCONTTYPEr� r� r r r r- r� rB r� r^ r1 rN r" rK r? r r: rL r~ r_ �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
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