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$Revision$s 0.9.0s& Lars Gust\u00e4bel (lars@gustaebel.de)s5 $Date: 2011-02-25 17:42:01 +0200 (Fri, 25 Feb 2011) $s? $Id: tarfile.py 88586 2011-02-25 15:42:01Z marc-andre.lemburg $s8 Gustavo Niemeyer, Niels Gust\u00e4bel, Richard Townsend.Nt TarFilet TarInfot
is_tarfilet TarErrori i s i i s ustar s ustar 00id i� t 0t 1t 2t 3t 4t 5t 6t 7t Lt Kt St xt gt Xi i t patht linkpatht sizet mtimet uidt gidt unamet gnamet atimet ctimei � i � i ` i @ i i i i i i� i@ i i i i t ntt ces utf-8c C s, | j | | � } | | | t | � t S( s8 Convert a string to a null-terminated bytes object.
( t encodet lent NUL( t st lengtht encodingt errors( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt stn� s c C s8 | j d � } | d k r( | | } n | j | | � S( s8 Convert a null-terminated bytes object to a string.
s i����( t findt decode( R" R$ R% t p( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt nts� s
c C s� | d t d � k r^ y% t t | d d � p1 d d � } Wq� t k
rZ t d � � q� XnI d } x@ t t | � d � D]( } | d K} | t | | d � 7} q{ W| S( s/ Convert a number field to a python number.
i i� t asciit strictR i s invalid headeri ( t chrt intR* t
ValueErrort InvalidHeaderErrort rangeR t ord( R" t nt i( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt nti� s %
c C s� d | k o d | d k n rH d | d | f j d � t } n� | t k sh | d | d k rw t d � � n | d k r� t j d t j d | � � d } n t � } x6 t | d � D]$ } | j d | d
@� | d L} q� W| j d d � | S( s/ Convert a python number to a number field.
i i i s %0*oR+ i s overflow in number fieldR
t li� i� (
R R! t
GNU_FORMATR/ t structt unpackt packt bytearrayR1 t insert( R3 t digitst formatR" R4 ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt itn� s $$ % c C sx d t t j d | d � t j d | d d !� � } d t t j d | d � t j 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 sumR8 R9 ( t buft unsigned_chksumt
signed_chksum( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt calc_chksums� s 77c C s | d k r d S| d k rS x0 t rN | j d � } | s> Pn | j | � q Wd Sd } t | | � \ } } xQ t | � D]C } | j | � } t | � | k r� t d � � n | j | � q{ W| d k r| j | � } t | � | k r� t d � � n | j | � n d S( sj Copy length bytes from fileobj src to fileobj dst.
If length is None, copy the entire content.
i Ni i s end of file reachedi @ i @ ( t Nonet Truet readt writet divmodR1 R t IOError( t srct dstR# RE t BUFSIZEt blockst remaindert b( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt copyfileobj s, R6 t -RT t dt cR) t rt wR" t tt Tc C si g } xS t D]K } xB | D]- \ } } | | @| k r | j | � Pq q W| j d � q
Wd j | � S( sc Convert a file's mode to a string of the form
-rwxrwxrwx.
Used by TarFile.list()
RV t ( t filemode_tablet appendt join( t modet permt tablet bitt char( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt filemode8 s
c B s e Z d Z RS( s Base exception.( t __name__t
__module__t __doc__( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR G s t ExtractErrorc B s e Z d Z RS( s% General exception for extract errors.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRj J s t ReadErrorc B s e Z d Z RS( s& Exception for unreadable tar archives.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRk M s t CompressionErrorc B s e Z d Z RS( s. Exception for unavailable compression methods.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRl P s t StreamErrorc B s e Z d Z RS( s= Exception for unsupported operations on stream-like TarFiles.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRm S s t HeaderErrorc B s e Z d Z RS( s! Base exception for header errors.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRn V s t EmptyHeaderErrorc B s e Z d Z RS( s Exception for empty headers.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRo Y s t TruncatedHeaderErrorc B s e Z d Z RS( s Exception for truncated headers.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRp \ s t EOFHeaderErrorc B s e Z d Z RS( s" Exception for end of file headers.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRq _ s R0 c B s e Z d Z RS( s Exception for invalid headers.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR0 b s t SubsequentHeaderErrorc B s e Z d Z RS( s3 Exception for missing and invalid extended headers.( Rg Rh Ri ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRr e 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.
It is used instead of a regular file object for streaming
access.
c C sg i t j d 6t j t j Bt j Bd 6| } t t d � rK | t j O} n t j | | d � | _ d S( NRY RZ t O_BINARYi� ( t ost O_RDONLYt O_WRONLYt O_CREATt O_TRUNCt hasattrRt t opent fd( t selft nameRa ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt __init__r s
c C s t j | j � d S( N( Ru t closeR| ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� { s c C s t j | j | � S( N( Ru RK R| ( R} R ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRK ~ s c C s t j | j | � d S( N( Ru RL R| ( R} R" ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRL � s ( Rg Rh Ri R R� RK RL ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRs l 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.
A stream-like object could be for example: sys.stdin,
sys.stdout, a socket, a tape device etc.
_Stream is intended to be used only internally.
c C s� t | _ | d k r0 t | | � } t | _ n | d k rW t | � } | j � } n | p` d | _ | | _ | | _ | | _
| | _ d | _ d | _
t | _ y� | d k r%y d d l } Wn t k
r� t d � � n X| | _ | j d � | _ | d k r| j � q%| j � n | d k r�y d d l } Wn t k
r`t d
� � n X| d k r�d | _ | j � | _ q�| j � | _ n Wn, | j s�| j
j � n t | _ � n Xd S( s$ Construct a _Stream object.
t *R] i t gzi����Ns zlib module is not availableRY t bz2s bz2 module is not available( RJ t _extfileobjRI Rs t Falset _StreamProxyt getcomptypeR~ Ra t comptypet fileobjt bufsizeRE t post closedt zlibt ImportErrorRl t crc32t crct
_init_read_gzt _init_write_gzR� t dbuft BZ2Decompressort cmpt
BZ2CompressorR� ( R} R~ Ra R� R� R� R� R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR � sP
c C s* t | d � r& | j r& | j � n d S( NR� ( Rz R� R� ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt __del__� s c C s� | j j d | j j | j j | j j d � | _ t j d t t j � � � } | j
d | d � | j j d � r� | j d | _ n | j
| j j
d d � t � d
S( s6 Initialize for writing with gzip compression.
i i s <Ls �s �s .gzi����s
iso-8859-1t replaceN( R� t compressobjt DEFLATEDt MAX_WBITSt
DEF_MEM_LEVELR� R8 R: R. t timet _Stream__writeR~ t endswithR R! ( R} t timestamp( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s
c C sw | j d k r- | j j | | j � | _ n | j t | � 7_ | j d k rf | j j | � } n | j | � d S( s& Write string s to the stream.
R� t tarN( R� R� R� R� R� R R� t compressR� ( R} R" ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRL � s c C s_ | j | 7_ xI t | j � | j k rZ | j j | j | j � | j | j | _ q Wd S( s] Write string s to the stream if a whole new block
is ready to be written.
N( RE R R� R� RL ( R} R" ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt __write� s c C s� | j r
d S| j d k rF | j d k rF | j | j j � 7_ n | j d k r� | j r� | j j | j � d | _ | j d k r� | j j t j d | j
d @� � | j j t j d | j d @� � q� n | j s� | j j
� n t | _ d S( s[ Close the _Stream object. No operation should be
done on it afterwards.
NRZ R� R] R� s <LI���� ( R� Ra R� RE R� t flushR� RL R8 R: R� R� R� R� RJ ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s #) c C ss | j j | j j � | _ d | _ | j d � d k rI t d � � n | j d � d k rm t d � � n t | j d � � } | j d � | d @r� t | j d � � d
t | j d � � } | j | � n | d @rx3 t
r| j d � } | s
| t k r� Pq� q� Wn | d @rUx3 t
rQ| j d � } | sJ| t k r"Pq"q"Wn | d @ro| j d � n d
S( s: Initialize for reading a gzip compressed fileobj.
R] i s �s not a gzip filei s s unsupported compression methodi i i i i N( R� t
decompressobjR� R� R� t
_Stream__readRk Rl R2 RK RJ R! ( R} t flagt xlenR" ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� s.
,
c C s | j S( s3 Return the stream's file pointer position.
( R� ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt tell# s i c C s| | | j d k ri t | | j | j � \ } } x$ t | � D] } | j | j � q? W| j | � n t d � � | j S( sX Set the stream's file pointer to pos. Negative seeking
is forbidden.
i s seeking backwards is not allowed( R� RM R� R1 RK Rm ( R} R� RR RS R4 ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt seek( s c C s� | d k rZ g } x3 t rG | j | j � } | s7 Pn | j | � q Wd j | � } n | j | � } | j t | � 7_ | S( s� Return the next size number of bytes from the stream.
If size is not defined, return all bytes of the stream
up to EOF.
R] N( RI RJ t _readR� R_ R` R� R ( R} R R[ RE ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRK 5 s c C s� | j d k r | j | � St | j � } x� | | k r� | j | j � } | sV Pn y | j j | � } Wn t k
r� t d � � n X| j | 7_ | t | � 7} q. W| j | } | j | | _ | S( s+ Return size bytes from the stream.
R� s invalid compressed data( R� R� R R� R� R� t
decompressRN Rk ( R} R RX RE ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� G s
c C s� t | j � } xN | | k r_ | j j | j � } | s= Pn | j | 7_ | t | � 7} q W| j | } | j | | _ | S( ss Return size bytes from stream. If internal buffer is empty,
read another block from the stream.
( R RE R� RK R� ( R} R RX RE ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt __read\ s
N( Rg Rh Ri R R� R� RL R� R� R� R� R� RI RK R� R� ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s 4
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" | | _ | j j t � | _ d S( N( R� RK t BLOCKSIZERE ( R} R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR q s c C s | j j | _ | j S( N( R� RK RE ( R} R ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRK u s c C s0 | j j d � r d S| j j d � r, d Sd S( Ns �R� t BZh91R� R� ( RE t
startswith( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� y s
c C s | j j � d S( N( R� R� ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s ( Rg Rh Ri R RK R� R� ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� l 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 | j d d � | _ | j � d S( NR~ ( R� Ra t getattrRI R~ t init( R} R� Ra ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR � s c C sb d d l } d | _ | j d k rO | j � | _ | j j d � d | _ n | j � | _ d S( Ni����i RY R] ( R� R� Ra R� t bz2objR� R� RE R� ( R} R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s c C s� t | j � } x` | | k rq | j j | j � } | s= Pn | j j | � } | j | 7_ | t | � 7} q W| j | } | j | | _ | j t | � 7_ | S( N( R RE R� RK t blocksizeR� R� R� ( R} R R t rawt dataRE ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRK � s
c C s4 | | j k r | j � n | j | | j � d S( N( R� R� RK ( R} R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s
c C s | j S( N( R� ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s c C s; | j t | � 7_ | j j | � } | j j | � d S( N( R� R R� R� R� RL ( R} R� R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRL � s c C s5 | j d k r1 | j j � } | j j | � n d S( NRZ ( Ra R� R� R� RL ( R} R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s i @ ( Rg Rh Ri R� R R� RK R� R� RL R� ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s
t _FileInFilec B sA e Z d Z d d � Z d � Z d � Z d � Z d 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 s | | _ | | _ | | _ d | _ | d k rB d | f g } n d | _ g | _ d } | j } xs | D]k \ } } | | k r� | j j t | | d f � n | j j t | | | | f � | | 7} | | } qj W| | j k r
| j j t | | j d f � n d S( Ni (
R� t offsetR t positionRI t map_indext mapR_ R� RJ ( R} R� R� R t blockinfot lastpost realpos( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR � s$
c C s# t | j d � s t S| j j � S( Nt seekable( Rz R� RJ R� ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s c C s | j S( s* Return the current file position.
( R� ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s c C s
| | _ d S( s( Seek to a position in the file.
N( R� ( R} R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s c C sK | d k r | j | j } n t | | j | j � } d } x| d k rFx| t r� | j | j \ } } } } | | j k o� | k n r� PqP | j d 7_ | j t | j � k rP d | _ qP qP Wt | | | j � } | r | j j | | j | � | | j j
| � 7} n | t | 7} | | 8} | j | 7_ qA W| S( s! Read data from the file.
R] i i N( RI R R� t minRJ R� R� R R� R� RK R! ( R} R RE R� t startt stopR� R# ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyRK � s(
N( Rg Rh Ri RI R R� R� R� RK ( ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s t ExFileObjectc B s� e Z d Z d Z d � Z d � Z d � Z d � Z d d � Z e Z
d d � Z d � Z d
� Z
e j d � Z d � Z d
� Z RS( sa File-like object for reading an archive member.
Is returned by TarFile.extractfile().
i c C sd t | j | j | j | j � | _ | j | _ d | _ t | _ | j | _ d | _ d | _
d S( NRY i R] ( R� R� t offset_dataR t sparseR~ Ra R� R� R� t buffer( R} t tarfilet tarinfo( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR s c C s t S( N( RJ ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt readable! s c C s t S( N( R� ( R} ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt writable$ s c C s
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d 6d d 6Z d � Z d � Z d � Z d � Z d1 d1 d1 d � Z e d � Z d1 e d1 d1 d � Z! d1 d � Z" d d1 d � Z# d e d � Z$ d � Z% e d � Z& d � Z' d � Z( d! � Z) d" � Z* d# � Z+ d$ � Z, d% � Z- d& � Z. d' � Z/ d( � Z0 d1 e d) � Z1 d* � Z2 d1 d+ � Z3 d, � Z4 d- � Z5 d. � Z6 d/ � Z7 d0 � Z8 RS(2 s= The TarFile Class provides an interface to tar archives.
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S( s� 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'.
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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
'r:' open for reading exclusively uncompressed
'r:gz' open for reading with gzip compression
'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
'w|gz' open a gzip compressed stream for writing
'w|bz2' open a bzip2 compressed stream for writing
s nothing to openRY s r:*s% file could not be opened successfullyt :i R� s unknown compression type %rt |t rws mode must be 'r' or 'w'Re s undiscernible modeN( RY s r:*( R/ t OPEN_METHR� RI R� Rk Rl R� RE R� R� R� R� t taropen(
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c K s@ t | � d k s | d k r- t d � � n | | | | | � S( sC Open uncompressed tar archive name for reading or writing.
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d S| j d k r� | j j t t d � | j t d 7_ t | j t � \ } } | d k r� | j j t t | � q� n | j s� | j j
� n t | _ d S( sl Close the TarFile. In write-mode, two finishing zero blocks are
appended to the archive.
NRe i i ( R� Ra R� RL R! R� R� RM t
RECORDSIZER� R� RJ ( R} RR RS ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� H s c C s2 | j | � } | d k r. t d | � � n | S( s Return a TarInfo object for member `name'. If `name' can not be
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than once in the archive, its last occurrence is assumed to be the
most up-to-date version.
s filename %r not foundN( t
_getmemberRI t KeyError( R} R~ R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt getmember\ s c C s' | j � | j s | j � n | j S( s� Return the members of the archive as a list of TarInfo objects. The
list has the same order as the members in the archive.
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S( s� Return the members of the archive as a list of their names. It has
the same order as the list returned by getmembers().
( R� R~ ( R} R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt getnamesq s c C s\ | j d � | d k r% | j } n | d k r: | } n t j j | � \ } } | j t j d � } | j d � } | j � } | | _
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t! t# f k rXt t d � rXt t d � rXt j6 | j7 � | _8 t j9 | j7 � | _: qXn | S(
sO 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.
Re R� t lstatR] i i t majort minorN(; R� RI R~ Ru R t
splitdriveR� t sept lstripR� R� Rz Rj R� t statt fstatt filenot st_modet S_ISREGt st_inot st_devt st_nlinkRp RR R� t S_ISDIRR� t S_ISFIFORX t S_ISLNKRP t readlinkt S_ISCHRRT t S_ISBLKRV Ra t st_uidR t st_gidR t st_sizeR t st_mtimeR R� R� t pwdt getpwuidR R� t grpt getgrgidR R� t st_rdevR� R� R� ( R} R~ t arcnameR� t drvR� t statresR� t stmdt inodeR� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt
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S( s� Print a table of contents to sys.stdout. If `verbose' is False, only
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� } | j
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| � d S( s~ 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.
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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.
Re i����Ns use the filter argument insteadi s tarfile: Excluded %rs tarfile: Skipped %ri s tarfile: Unsupported type %rRb t filter( R� RI t warningst warnt DeprecationWarningt _dbgR~ Ru R Ri R� R, Rh t addfileR� R t listdirt addR` ( R} R~ R� t recursivet excludeR� R� R� t f( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � sD
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*c 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( s] 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.
Re i i N( R� R� R� R> R$ R% R� RL R� R RI RU R RM R� R! Rn R_ ( R} R� R� RE RR RS ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� 4 s
t .c C s: g } | d k r | } n x_ | D]W } | j � r\ | j | � t j | � } d | _ n | j | | d | j � �q" W| j d d � � | j � x� | D]� } t j j
| | j � } y4 | j | | � | j
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r1} | j d k r� q2| j d d | � q� Xq� Wd S( sM 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().
i� t set_attrst keyc S s | j S( N( R~ ( Rc ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt <lambda>d R] i s tarfile: %sN( RI R R_ R� Ra t extractt sortt reverseRu R R` R~ t chownt utimet chmodRj Rm R� ( R} R Rn t directoriesR� t dirpathRr ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyt
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d k r!� q9| j d d | � n Xd S( sx 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.
RY R� i i s tarfile: %ss tarfile: %s %rN( R� R R R� RS Ru R R` R� R� t _extract_memberR~ t EnvironmentErrorRm t filenameRI R� t strerrorRj ( R} t memberR R� R� Rr ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� t s&
! #c C s� | j d � t | t � r. | j | � } n | } | j � rP | j | | � S| j t k ro | j | | � S| j � s� | j � r� t | j
t � r� t d � � q� | j
| j | � � Sn d Sd S( s� Extract a member from the archive as a file object. `member' may be
a filename or a TarInfo object. If `member' is a regular file, a
file-like object is returned. If `member' is a link, a file-like
object is constructed from the link's target. If `member' is none of
the above, None is returned.
The file-like object is read-only and provides the following
methods: read(), readline(), readlines(), seek() and tell()
RY s' cannot extract (sym)link as file objectN( R� R R R� R, t
fileobjectR� R- RS RQ R� R� Rm t extractfilet _find_link_targetRI ( R} R� R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s
c C s� | j d � } | j d t j � } t j j | � } | r_ t j j | � r_ t j | � n | j � sw | j � r� | j
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� 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( s\ Extract the TarInfo object tarinfo to a physical
file called targetpath.
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c C s� | j } | j | j � t | d � } | j d k rq xJ | j D]) \ } } | j | � t | | | � qA Wn t | | | j � | j | j � | j � | j � d S( s' Make a file called targetpath.
Rd N(
R� R� R� Rh R� RI RU R t truncateR� ( R} R� R� t sourcet targetR� R ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� � s
c C s+ | j | | � | j d d | j � d S( sY Make a file from a TarInfo object with an unknown type
at targetpath.
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t mkfifos fifo not supported by systemN( Rz Ru R� Rj ( R} R� R� ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� s c C s� t t d � s t t d � r/ t d � � n | j } | j � rT | t j O} n
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t mknodR� s' special devices not supported by systemN( Rz Ru Rj Ra RW R� t S_IFBLKt S_IFCHRR� R� R� R� ( R} R� R� Ra ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� s
c C s� yj | j � r% t j | j | � nD t j j | j � rP t j | j | � n | j | j | � | � WnP t
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� | j � } q� | j } n> Xy | j | j | � | � Wn t k
r� t d � � n Xd S( s� 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.
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c C s t rt t d � rt j � d k ry t j | j � d } Wn t k
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| | | � n% t j d k r� t j | | | � n Wqt k
r} t d � � qXn d S( s6 Set owner of targetpath according to tarinfo.
t geteuidi i t lchownt os2emxs could not change ownerN( R� Rz Ru R� R� t getgrnamR R� R t getpwnamR R RQ R� t syst platformR� R� Rj ( R} R� R� R t uRr ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR� D s '
c C sO t t d � rK y t j | | j � WqK t k
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c C sY t t d � s d Sy t j | | j | j f � Wn t k
rT } t d � � n Xd S( sB Set modification time of targetpath according to tarinfo.
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r�} t t | � � � n XPqN W| d k r�| j j | � n t | _ | S( s� 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 fileN( R� Rq RI R� R� R� RJ R� R& Rq Rk R� R� R0 Rk R Ro Rp Rr Rn R_ Ro ( R} t mR� Rr ( ( sI /usr/lib/python2.7/site-packages/pip/_vendor/distlib/_backport/tarfile.pyR0 n sF
c C s� | j � } | d k r. | | j | � } n | rI t j j | � } n xK t | � D]= } | rz t j j | j � } n | j } | | k rV | SqV Wd S( s} Find an archive member by name from bottom to top.
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R� c B s/ e Z d Z d � Z d � Z d � Z e Z RS( sM Iterator Class.
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c C s | | _ d | _ d S( s$ Construct a TarIter object.
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ri t � n X| j d 7_ | S( s� Return the next item using TarFile's next() method.
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r2 t SXd S( sf Return True if name points to a tar archive that we
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