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| Current File : //usr/lib64/python2.6/tarfile.pyo |
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s $Revision: 81664 $s 0.9.0s! Lars Gust�bel (lars@gustaebel.de)s5 $Date: 2010-06-03 06:07:08 -0400 (Thu, 03 Jun 2010) $s; $Id: tarfile.py 81664 2010-06-03 10:07:08Z lars.gustaebel $s3 Gustavo Niemeyer, Niels Gust�bel, Richard Townsend.i����Nt macs' tarfile does not work for platform==mact TarFilet TarInfot
is_tarfilet TarErrort i i s ustar t ustar 00id i� t 0t 1t 2t 3t 4t 5t 6t 7t Lt Kt St xt gt Xi i i t patht linkpatht sizet mtimet uidt gidt unamet gnamet atimet ctimei � i � i ` i @ i i i i i i� i@ i i i i c C s | | | t | � t S( s@ Convert a python string to a null-terminated string buffer.
( t lent NUL( t st length( ( s /usr/lib64/python2.6/tarfile.pyt stn� s c C s) | i d � } | d j o | S| | S( s? Convert a null-terminated string field to a python string.
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c C s� | d t d � j oF y t t | � p d d � } Wq� t j
o t d � � q� XnJ d } x@ t t | � d � D]( } | d K} | t | | d � 7} qz W| S( s/ Convert a number field to a python number.
i i� R i s invalid headerl i ( t chrt intR& t
ValueErrort HeaderErrort xrangeR t ord( R! t nt i( ( s /usr/lib64/python2.6/tarfile.pyt nti� s
c C s� d | j o d | d j n o d | d | f t } n� | t j p | d | d j o t d � � n | d j o& t i d t i d | � � d } n d } x6 t | d � D]$ } t | d
@� | } | d L} q� Wt d � | } | S( s/ Convert a python number to a number field.
i i i s %0*oi s overflow in number fieldR t lt i� i� ( R t
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& c C s� | d j o� y | i | d � SWq� t j
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o | i | i d � � q? Xq? Wd i | � SXn | i | | � Sd S( s* Convert a unicode object to a string.
s utf-8t strictt utf8R1 N( t encodet UnicodeEncodeErrort appendt join( R! t encodingt errorsR t c( ( s /usr/lib64/python2.6/tarfile.pyt uts� s
c C sx d t t i d | d � t i d | d d !� � } d t t i d | d � t i d | d d !� � } | | f S( s� Calculate the checksum for a member's header by summing up all
characters except for the chksum field which is treated as if
it was filled with spaces. According to the GNU tar sources,
some tars (Sun and NeXT) calculate chksum with signed char,
which will be different if there are chars in the buffer with
the high bit set. So we calculate two checksums, unsigned and
signed.
i t 148Bi� t 356Bi� i t 148bt 356b( t sumR3 R4 ( t buft unsigned_chksumt
signed_chksum( ( s /usr/lib64/python2.6/tarfile.pyt calc_chksums� s 77c C s� | d j o d S| d j o t i | | � d Sd } t | | � \ } } xS t | � D]E } | i | � } t | � | j o t d � � n | i | � q\ W| d j oC | i | � } t | � | j o t d � � n | i | � n d S( sj Copy length bytes from fileobj src to fileobj dst.
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i Ni i s end of file reachedi @ ( t Nonet shutilt copyfileobjt divmodR+ t readR t IOErrort write( t srct dstR" t BUFSIZEt blockst remaindert bRH ( ( s /usr/lib64/python2.6/tarfile.pyRN s&
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Wd i | � S( sc Convert a file's mode to a string of the form
-rwxrwxrwx.
Used by TarFile.list()
RY R1 ( t filemode_tableR= R> ( t modet permt tablet bitt char( ( s /usr/lib64/python2.6/tarfile.pyt filemode= s
t /c C s t i i | � i t i d � S( Rf ( t osR t normpatht replacet sep( R ( ( s /usr/lib64/python2.6/tarfile.pyt <lambda>M s c B s e Z d Z RS( s Base exception.( t __name__t
__module__t __doc__( ( ( s /usr/lib64/python2.6/tarfile.pyR Q s t ExtractErrorc B s e Z d Z RS( s% General exception for extract errors.( Rl Rm Rn ( ( ( s /usr/lib64/python2.6/tarfile.pyRo T s t ReadErrorc B s e Z d Z RS( s% Exception for unreadble tar archives.( Rl Rm Rn ( ( ( s /usr/lib64/python2.6/tarfile.pyRp W s t CompressionErrorc B s e Z d Z RS( s. Exception for unavailable compression methods.( Rl Rm Rn ( ( ( s /usr/lib64/python2.6/tarfile.pyRq Z s t StreamErrorc B s e Z d Z RS( s= Exception for unsupported operations on stream-like TarFiles.( Rl Rm Rn ( ( ( s /usr/lib64/python2.6/tarfile.pyRr ] s R* c B s e Z d Z RS( s Exception for invalid headers.( Rl Rm Rn ( ( ( s /usr/lib64/python2.6/tarfile.pyR* ` s t
_LowLevelFilec B s2 e Z d Z d � Z d � Z d � Z d � Z RS( s� Low-level file object. Supports reading and writing.
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access.
c C si h t i d 6t i t i Bt i Bd 6| } t t d � o | t i O} n t i | | d � | _ d S( NR[ R\ t O_BINARYi� ( Rg t O_RDONLYt O_WRONLYt O_CREATt O_TRUNCt hasattrRt t opent fd( t selft nameR` ( ( s /usr/lib64/python2.6/tarfile.pyt __init__m s
c C s t i | i � d S( N( Rg t closeR{ ( R| ( ( s /usr/lib64/python2.6/tarfile.pyR v s c C s t i | i | � S( N( Rg RP R{ ( R| R ( ( s /usr/lib64/python2.6/tarfile.pyRP y s c C s t i | i | � d S( N( Rg RR R{ ( R| R! ( ( s /usr/lib64/python2.6/tarfile.pyRR | s ( Rl Rm Rn R~ R RP RR ( ( ( s /usr/lib64/python2.6/tarfile.pyRs g s
t _Streamc B s� e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
d d
� Z d d � Z
d � Z d
� Z RS( s� Class that serves as an adapter between TarFile and
a stream-like object. The stream-like object only
needs to have a read() or write() method and is accessed
blockwise. Use of gzip or bzip2 compression is possible.
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sys.stdout, a socket, a tape device etc.
_Stream is intended to be used only internally.
c
C s� t | _ | d j o t | | � } t | _ n | d j o t | � } | i � } n | p d | _ | | _ | | _ | | _
| | _ d | _ d | _
t | _ | d j oz y d d k } Wn t j
o t d � � n X| | _ | i d � d @| _ | d j o | i � q1| i � n | d
j on y d d k } Wn t j
o t d � � n X| d j o d | _ | i � | _ q�| i � | _ n d S( s$ Construct a _Stream object.
t *R1 l t gzi����Ns zlib module is not availablel �� R[ t bz2s bz2 module is not available( t Truet _extfileobjRL Rs t Falset _StreamProxyt getcomptypeR} R` t comptypet fileobjt bufsizeRH t post closedt zlibt ImportErrorRq t crc32t crct
_init_read_gzt _init_write_gzR� t dbuft BZ2Decompressort cmpt
BZ2Compressor( R| R} R` R� R� R� R� R� ( ( s /usr/lib64/python2.6/tarfile.pyR~ � sD
c C s- t | d � o | i o | i � n d S( NR� ( Ry R� R ( R| ( ( s /usr/lib64/python2.6/tarfile.pyt __del__� s c C s� | i i d | i i | i i | i i d � | _ t i d t t i � � � } | i
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� d S( s6 Initialize for writing with gzip compression.
i i s <Ls �%s�s .gzi����N( R� t compressobjt DEFLATEDt MAX_WBITSt
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c C s | i d j o# | i i | | i � d @| _ n | i t | � 7_ | i d j o | i i | � } n | i | � d S( s& Write string s to the stream.
R� l �� t tarN( R� R� R� R� R� R R� t compressR� ( R| R! ( ( s /usr/lib64/python2.6/tarfile.pyRR � s #c C sa | i | 7_ xK t | i � | i j o1 | i i | i | i � | i | i | _ q Wd S( s] Write string s to the stream if a whole new block
is ready to be written.
N( RH R R� R� RR ( R| R! ( ( s /usr/lib64/python2.6/tarfile.pyt __write� s
c C s | i o d S| i d j o, | i d j o | i | i i � 7_ n | i d j o� | i oz | i i | i � d | _ | i d j oJ | i i t i d | i
d @� � | i i t i d | i d @� � q� n | i p | i i
� n t | _ d S( s[ Close the _Stream object. No operation should be
done on it afterwards.
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#+
c C s� | i i | i i � | _ d | _ | i d � d j o t d � � n | i d � d j o t d � � n t | i d � � } | i d � | d @o= t | i d � � d
t | i d � � } | i | � n | d @o< x9 t
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S( s: Initialize for reading a gzip compressed fileobj.
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decompressobjR� R� R� t
_Stream__readRp Rq R, RP R� R ( R| t flagt xlenR! ( ( s /usr/lib64/python2.6/tarfile.pyR� � s2
, c C s | i S( s3 Return the stream's file pointer position.
( R� ( R| ( ( s /usr/lib64/python2.6/tarfile.pyt tell s i c C s~ | | i d j oW t | | i | i � \ } } x$ t | � D] } | i | i � q@ W| i | � n
t d � � | i S( sX Set the stream's file pointer to pos. Negative seeking
is forbidden.
i s seeking backwards is not allowed( R� RO R� R+ RP Rr ( R| R� RV RW R. ( ( s /usr/lib64/python2.6/tarfile.pyt seek s
c C s� | d j oS g } x7 t o/ | i | i � } | p Pn | i | � q Wd i | � } n | i | � } | i t | � 7_ | S( s� Return the next size number of bytes from the stream.
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up to EOF.
R1 N( RL R� t _readR� R= R> R� R ( R| R R] RH ( ( s /usr/lib64/python2.6/tarfile.pyRP ) s
c C s� | i d j o | i | � St | i � } | i g } x� | | j ow | i | i � } | p Pn y | i i | � } Wn t j
o t d � � n X| i | � | t | � 7} q< Wd i
| � } | | | _ | | S( s+ Return size bytes from the stream.
R� s invalid compressed dataR1 ( R� R� R R� R� R� t
decompressRQ Rp R= R> ( R| R RA R] RH ( ( s /usr/lib64/python2.6/tarfile.pyR� ; s$
c C s� t | i � } | i g } xP | | j oB | i i | i � } | p Pn | i | � | t | � 7} q Wd i | � } | | | _ | | S( ss Return size bytes from stream. If internal buffer is empty,
read another block from the stream.
R1 ( R RH R� RP R� R= R> ( R| R RA R] RH ( ( s /usr/lib64/python2.6/tarfile.pyt __readQ s
N( Rl Rm Rn R~ R� R� RR R� R R� R� R� RL RP R� R� ( ( ( s /usr/lib64/python2.6/tarfile.pyR� s .
R� c B s2 e Z d Z d � Z d � Z d � Z d � Z RS( ss Small proxy class that enables transparent compression
detection for the Stream interface (mode 'r|*').
c C s" | | _ | i i t � | _ d S( N( R� RP t BLOCKSIZERH ( R| R� ( ( s /usr/lib64/python2.6/tarfile.pyR~ g s c C s | i i | _ | i S( N( R� RP RH ( R| R ( ( s /usr/lib64/python2.6/tarfile.pyRP k s c C s4 | i i d � o d S| i i d � o d Sd S( Ns �R� t BZh91R� R� ( RH t
startswith( R| ( ( s /usr/lib64/python2.6/tarfile.pyR� o s
c C s | i i � d S( N( R� R ( R| ( ( s /usr/lib64/python2.6/tarfile.pyR v s ( Rl Rm Rn R~ RP R� R ( ( ( s /usr/lib64/python2.6/tarfile.pyR� b s
t _BZ2Proxyc B sS e Z d Z d
Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
RS( s Small proxy class that enables external file object
support for "r:bz2" and "w:bz2" modes. This is actually
a workaround for a limitation in bz2 module's BZ2File
class which (unlike gzip.GzipFile) has no support for
a file object argument.
i i c C s8 | | _ | | _ t | i d d � | _ | i � d S( NR} ( R� R` t getattrRL R} t init( R| R� R` ( ( s /usr/lib64/python2.6/tarfile.pyR~ � s c C sd d d k } d | _ | i d j o, | i � | _ | i i d � d | _ n | i � | _ d S( Ni����i R[ R1 ( R� R� R` R� t bz2objR� R� RH R� ( R| R� ( ( s /usr/lib64/python2.6/tarfile.pyR� � s
c C s� | i g } t | i � } x} | | j oo | i i | i � } | p Pn y | i i | � } Wn t j
o Pn X| i | � | t | � 7} q Wd i | � | _ | i | } | i | | _ | i
t | � 7_
| S( NR1 ( RH R R� RP t blocksizeR� R� t EOFErrorR= R> R� ( R| R RX R t rawt dataRH ( ( s /usr/lib64/python2.6/tarfile.pyRP � s$
c C s6 | | i j o | i � n | i | | i � d S( N( R� R� RP ( R| R� ( ( s /usr/lib64/python2.6/tarfile.pyR� � s c C s | i S( N( R� ( R| ( ( s /usr/lib64/python2.6/tarfile.pyR� � s c C s; | i t | � 7_ | i i | � } | i i | � d S( N( R� R R� R� R� RR ( R| R� R� ( ( s /usr/lib64/python2.6/tarfile.pyRR � s c C s7 | i d j o# | i i � } | i i | � n d S( NR\ ( R` R� R� R� RR ( R| R� ( ( s /usr/lib64/python2.6/tarfile.pyR � s i @ ( Rl Rm Rn R� R~ R� RP R� R� RR R ( ( ( s /usr/lib64/python2.6/tarfile.pyR� z s
t _FileInFilec B sS e Z d Z d d � Z d � Z d � Z d d � Z d � Z d � Z d � Z
RS( s A thin wrapper around an existing file object that
provides a part of its data as an individual file
object.
c C s1 | | _ | | _ | | _ | | _ d | _ d S( Ni ( R� t offsetR t sparset position( R| R� R� R R� ( ( s /usr/lib64/python2.6/tarfile.pyR~ � s
c C s | i S( s* Return the current file position.
( R� ( R| ( ( s /usr/lib64/python2.6/tarfile.pyR� � s c C s
| | _ d S( s( Seek to a position in the file.
N( R� ( R| R� ( ( s /usr/lib64/python2.6/tarfile.pyR� � s c C si | d j o | i | i } n t | | i | i � } | i d j o | i | � S| i | � Sd S( s! Read data from the file.
N( RL R R� t minR� t
readnormalt
readsparse( R| R ( ( s /usr/lib64/python2.6/tarfile.pyRP � s
c C s9 | i i | i | i � | i | 7_ | i i | � S( s* Read operation for regular files.
( R� R� R� R� RP ( R| R ( ( s /usr/lib64/python2.6/tarfile.pyR� � s c C s` g } xJ | d j o< | i | � } | p Pn | t | � 8} | i | � q Wd i | � S( s) Read operation for sparse files.
i R1 ( t readsparsesectionR R= R> ( R| R R� RH ( ( s /usr/lib64/python2.6/tarfile.pyR� � s
c C s� | i i | i � } | d j o d St | | i | i | i � } t | t � oN | i | i | i } | i
i | i | � | i | 7_ | i
i | � S| i | 7_ t
| Sd S( s0 Read a single section of a sparse file.
R1 N( R� R$ R� RL R� R� R t
isinstancet _datat realposR� R� RP R ( R| R t sectionR� ( ( s /usr/lib64/python2.6/tarfile.pyR� � s
N( Rl Rm Rn RL R~ R� R� RP R� R� R� ( ( ( s /usr/lib64/python2.6/tarfile.pyR� � s
t ExFileObjectc B sh e Z d Z d Z d � Z d d � Z d d � Z d � Z d � Z e
i d � Z d � Z
d
� Z RS( sa File-like object for reading an archive member.
Is returned by TarFile.extractfile().
i c C sm t | i | i | i t | d d � � | _ | i | _ d | _ t | _ | i | _ d | _
d | _ d S( NR� R[ i R1 ( R� R� t offset_dataR R� RL R} R` R� R� R� t buffer( R| t tarfilet tarinfo( ( s /usr/lib64/python2.6/tarfile.pyR~ s c C s� | i o t d � � n d } | i oD | d j o | i } d | _ qn | i | } | i | | _ n | d j o | | i i � 7} n! | | i i | t | � � 7} | i t | � 7_ | S( s~ Read at most size bytes from the file. If size is not
present or None, read all data until EOF is reached.
s I/O operation on closed fileR1 N( R� R) R� RL R� RP R R� ( R| R RH ( ( s /usr/lib64/python2.6/tarfile.pyRP s
i����c C s9 | i o t d � � n d | i j o | i i d � d } n� | i g } x� t o� | i i | i � } | i | � | p
d | j oM d i | � | _ | i i d � d } | d j o t
| i � } n PqS qS W| d j o t | | � } n | i | } | i | | _ | i t
| � 7_ | S( s� Read one entire line from the file. If size is present
and non-negative, return a string with at most that
size, which may be an incomplete line.
s I/O operation on closed files
i R1 i i����(
R� R) R� R$ R� R� RP R� R= R> R R� R� ( R| R R� t buffersRH ( ( s /usr/lib64/python2.6/tarfile.pyt readline5 s*
c C s> g } x1 t o) | i � } | p Pn | i | � q W| S( s0 Return a list with all remaining lines.
( R� R� R= ( R| t resultt line( ( s /usr/lib64/python2.6/tarfile.pyt readlinesT s c C s! | i o t d � � n | i S( s* Return the current file position.
s I/O operation on closed file( R� R) R� ( R| ( ( s /usr/lib64/python2.6/tarfile.pyR� ^ s
c C s | i o t d � � n | t i j o" t t | d � | i � | _ n� | t i j oJ | d j o t | i | d � | _ q� t | i | | i � | _ nF | t i j o) t t | i | | i � d � | _ n
t d � � d | _
| i i | i � d S( s( Seek to a position in the file.
s I/O operation on closed filei s Invalid argumentR1 N(
R� R) Rg t SEEK_SETR� t maxR R� t SEEK_CURt SEEK_ENDR� R� R� ( R| R� t whence( ( s /usr/lib64/python2.6/tarfile.pyR� f s
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) c C s
t | _ d S( s Close the file object.
N( R� R� ( R| ( ( s /usr/lib64/python2.6/tarfile.pyR { s c c s0 x) t o! | i � } | p Pn | Vq Wd S( s/ Get an iterator over the file's lines.
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c B s� e Z d Z d d � Z d � Z d � Z e e e � Z d � Z d � Z e e e � Z
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� Z e d � � Z d � Z e d � � Z e d � � Z e d � � Z e e d � � Z e d � � Z e d � � Z d � Z d � Z d � Z d � Z! d � Z" d � Z# d � Z$ d � Z% d � Z& d � Z' d � Z( d! � Z) d" � Z* d# � Z+ d$ � Z, d% � Z- d& � Z. RS(' s Informational class which holds the details about an
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usually created internally.
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t | i � d 6| i d @d 6| i d 6| i d 6| i d 6| i d 6| i d 6| i d 6| i o t | i � n d
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s invalid formatN( R� t USTAR_FORMATt create_ustar_headerR2 t create_gnu_headert
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c C s} t | d <t | d � t j o t d � � n t | d � t j o% | i | d � \ | d <| d <n | i | t � S( s3 Return the object as a ustar header block.
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%c C s� t | d <d } t | d � t j o | | i | d t � 7} n t | d � t j o | | i | d t � 7} n | | i | t � S( s: Return the object as a GNU header block sequence.
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R� ( R� t XGLTYPE( t clsR� ( ( s /usr/lib64/python2.6/tarfile.pyt create_pax_global_header5 s c C s� | t d } x' | o | d d j o | d } q W| t | � } | d } | p t | � t j o t d � � n | | f S( sU Split a name longer than 100 chars into a prefix
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| i d t � t | i d d � d � t | i d t � d � t | i d d � d � t | i d d � d � t | i d d � d | � t | i d d � d | � t | i d d � d � g } t i d t d i | � � } t | t � d } | d d | | d } | S( s� Return a header block. info is a dictionary with file
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t | _ n | i � o | i i d � | _ n | o( | i t j o | d | i | _ n | S( sB Construct a TarInfo object from a 512 byte string buffer.
s truncated headers empty headeri� i� s bad checksumi id il it i| i� i� i i i) iI iQ iY i� Rf ( R R� R* t countR R/ RK RH R& R} R` R R R R R� R� R� R R R� R� t AREGTYPER� R� t isdirt rstript GNU_TYPES( R RH R� t objR� ( ( s /usr/lib64/python2.6/tarfile.pyt frombuf� s< #
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� � d S( s| Open a tar archive for reading, writing or appending. Return
an appropriate TarFile class.
mode:
'r' or 'r:*' open for reading with transparent compression
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'r:bz2' open for reading with bzip2 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
'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
'w|' open an uncompressed stream for writing
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'w|bz2' open a bzip2 compressed stream for writing
s nothing to openR[ s r:*s% file could not be opened successfullyt :i R� s unknown compression type %rt |t rws mode must be 'r' or 'w'RL s undiscernible modeN( R[ s r:*(
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� n t | _ d S( sl Close the TarFile. In write-mode, two finishing zero blocks are
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s filename %r not foundN( t
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file in the archive.
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| � d S( s� Add the file `name' to the archive. `name' may be any type of file
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On Windows platforms, `fileobj' should always be opened with mode
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to extract to. `members' is optional and must be a subset of the
list returned by getmembers().
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specify a different directory using `path'.
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d d | i | f � | i t 7_ qJ q| i d j o t t | � � � n d Sn XPqJ W| S( s� Return the next member of the archive as a TarInfo object, when
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c C s: x* t o" | i � } | d j o Pq q Wt | _ d S( sW Read through the entire archive file and look for readable
members.
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c C s\ | i o t d | i i � � n | d j o' | i | j o t d | i � � n d S( sn Check if TarFile is still open, and if the operation's mode
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c C s& | i o t | i � St | � Sd S( s$ Provide an iterator object.
N( RV t iterRU t TarIter( R| ( ( s /usr/lib64/python2.6/tarfile.pyR� D s
c C s% | | i j o t i | IJn d S( s. Write debugging output to sys.stderr.
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c C s | | _ d | _ d S( s$ Construct a TarIter object.
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o t SXd S( sf Return True if name points to a tar archive that we
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