AlkantarClanX12
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Read and write ZIP files.
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Raised when writing a zipfile, the zipfile requires ZIP64 extensions
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rc Yn X| S)z�Quickly see if a file is a ZIP file by checking the magic number.
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Read the ZIP64 end-of-archive records and use that to update endrec
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t j t | � � } | t } | | t | t | � } | j | � | j | | � t | | | | | � Sd S) z�Return data from the "End of Central Directory" record, or None.
The data is a list of the nine items in the ZIP "End of central dir"
record followed by a tenth item, the file seek offset of this record.r r Nr s � r r ���i )r5 �tell�sizeEndCentDirr, r/ r7 �stringEndArchiver8 r9 �structEndArchive�list�appendrK �max�rfind�_ECD_COMMENT_SIZE) rF ZfilesizerI rH ZmaxCommentStart�startZrecDataZ commentSize�commentr r r r+ � s>
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| | S)z'Return the per-file header as a string.r i� r$ r r! r r r& r r Nz<HHQQz'Filesize would require ZIP64 extensionsl �� )rZ r` re rf rg r\ � ZIP64_LIMITr8 �pack�calcsizer
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z ZipInfo._encodeFilenameFlagsc C s� | j } t j } x�t | � d k r�| d | d d � � \ } } | d k r| d k rz | d | d d � � } nx | d k r� | d | d d � � } nP | d
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} | j d k r!| | | _ | d 7} n | j d k rJ| | | _ | d 7} n | j d k r| j } | | | _ | d 7} qn | | d d � } q Wd S)Nr z<HHr � z<QQQ� r z<QQr r z<Qr r zCorrupt extra field %s� ���� � �� )r� r� )r\ r8 r9 r7 � RuntimeErrorrg rf rd )ru r\ r9 Ztp�lnZcounts�idx�oldr r r � _decodeExtra� s4
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_ZipDecryptera Class to handle decryption of files stored within a ZIP archive.
ZIP supports a password-based form of encryption. Even though known
plaintext attacks have been found against it, it is still useful
to be able to get data out of such a file.
Usage:
zd = _ZipDecrypter(mypwd)
plain_char = zd(cypher_char)
plain_text = map(zd, cypher_text)
c C s� d } d g d } xh t d � D]Z } | } xA t d � D]3 } | d @r^ | d ?d @| A} q9 | d ?d @} q9 W| | | <q W| S)z�Generate a CRC-32 table.
ZIP encryption uses the CRC32 one-byte primitive for scrambling some
internal keys. We noticed that a direct implementation is faster than
relying on binascii.crc32().
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z _ZipDecrypter._GenerateCRCTableNc C s | d ?d @| j | | Ad @AS)z(Compute the CRC32 primitive on one byte.r i��� � )�crctable)ru Zchr� r r r �_crc32� s z_ZipDecrypter._crc32c C s^ t j d k r! t j � t _ n d | _ d | _ d | _ x | D] } | j | � qC Wd S)NixV4i�gE#i�xV4)r� r� r� �key0�key1�key2� _UpdateKeys)ru �pwd�pr r r rv � s
z_ZipDecrypter.__init__c C sr | j | | j � | _ | j | j d @d @| _ | j d d d @| _ | j | j d ?d @| j � | _ d S)Nr� l �� i�r r� )r� r� r� r� )ru �cr r r r� � s z_ZipDecrypter._UpdateKeysc C s8 | j d B} | | | d Ad ?d @A} | j | � | S)zDecrypt a single character.r r r r� )r� r� )ru r� �kr r r �__call__� s
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d | _ d S)N)�_comp)ru r r r rv � s zLZMACompressor.__init__c C sf t j i t j d 6� } t j t j d t j t j | � g �| _ t j d d d t | � � | S)N�id�filtersz<BBHr$ r )
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r r� Z compressobjZZ_DEFAULT_COMPRESSIONZDEFLATEDr r� Z
BZ2Compressorr r� )r[ r r r �_get_compressorV s
r� c C s� | t k r d S| t k r) t j d � S| t k r? t j � S| t k rR t � St j
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decompressobjr r� ZBZ2Decompressorr r� �compressor_names�get�NotImplementedError)r[ Zdescrr r r �_get_decompressorb s
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ZipExtFilezZFile-like object for reading an archive member.
Is returned by ZipFile.open().
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_decrypter�_close_fileobjr[ �_compress_typerf �_compress_leftrg �_leftr� �
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_expected_crc�crc32� _running_crc)ru Zfileobjr� �zipinfoZ decrypter�
close_fileobjr r r rv � s( zZipExtFile.__init__c C s� | j rd | d k rd | j j d | j � d } | d k rd | j | j | � } | | _ | Sn | j s� t j j | | � Sd } x | d k s� t | � | k r�| j d � } | d k r� | S| j j
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| � n | j t | � 7_ | d S| j d � } | d k r�| d | t | � � } n | j t | � 7_ | | 7} q� W| S) zrRead and return a line from the stream.
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r rL r �newlineN�chunk)r� r� rl r� �io�BufferedIOBase�readliner7 �peek�PATTERN�search�groupr� rS )ru �limitr� �lineZ readahead�matchr� r� r r r r� � s8 !
zZipExtFile.readlinec C s� | t | j � | j k r� | j | � } t | � | j k ri | | j | j d � | _ d | _ q� | j t | � 8_ n | j | j | j d � S)z6Returns buffered bytes without advancing the position.Nr i )r7 r� r� r/ )ru �nr� r r r r� � s zZipExtFile.peekc C s d S)NTr )ru r r r �readable� s zZipExtFile.readablec C sp | d k s | d k rj | j | j d � } d | _ d | _ x# | j se | | j | j � 7} qC W| S| | j } | t | j � k r� | j | j | � } | | _ | S| t | j � } | j | j d � } d | _ d | _ x | d k rk| j rk| j | � } | t | � k rN| | _ | | _ | | d | � 7} Pn | | 7} | t | � 8} q� W| S)z�Read and return up to n bytes.
If the argument is omitted, None, or negative, data is read and returned until EOF is reached..
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zZipExtFile.readc C sa | j d k r d St | | j � d @| _ | j r] | j | j k r] t d | j � � n d S)Nl �� zBad CRC-32 for file %r)r� r� r� r� r r� )ru �newdatar r r � _update_crc s
zZipExtFile._update_crcc C s| | d k s | d k rz | j | j d � } d | _ d | _ x3 | j su | j | j � } | rC | | 7} PqC qC W| S| | j } | t | j � k r� | j | j | � } | | _ | S| t | j � } | j | j d � } d | _ d | _ | d k rxxo | j st| j | � } | t | � k r]| | _ | | _ | | d | � 7} Pn | r | | 7} Pq q Wn | S)z7Read up to n bytes with at most one read() system call.Nr rL )r� r� r� r� r� r7 )ru r� r� rI r� r r r �read1 s>
zZipExtFile.read1c C s� | j s | d k r d S| j t k ri | j j } | t | � k rx | | j | t | � � 7} qx n | j | � } | j t k r� | j d k | _ n� | j t k r t | | j
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zZipExtFile._read1c C s� | j d k r d St | | j � } t | | j � } | j j | � } | j t | � 8_ | sm t � n | j d k r� t t
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s2 z | j r | j j � n Wd t � j � Xd S)N)r� r� �close�super)ru )� __class__r r r� h s zZipExtFile.close� i @���r� )r r r r r� r� �re�compiler� rv r� r� r� r/ r� r� r� r� r� r r )r� r r� s s 2
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d d � Z d d � Z d d � Z e d d � � Z e j d d � � Z d d d � Z d d d d � Z d d d d! � Z d d d d" d# � Z e d$ d% � � Z d& d' � Z d( d) � Z d d d* d+ � Z d d, d- � Z d. d/ � Z d0 d1 � Z d S)2r a� Class with methods to open, read, write, close, list zip files.
z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=True)
file: Either the path to the file, or a file-like object.
If it is a path, the file will be opened and closed by ZipFile.
mode: The mode can be either read "r", write "w" or append "a".
compression: ZIP_STORED (no compression), ZIP_DEFLATED (requires zlib),
ZIP_BZIP2 (requires bz2) or ZIP_LZMA (requires lzma).
allowZip64: if True ZipFile will create files with ZIP64 extensions when
needed, otherwise it will raise an exception when this would
be necessary.
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r�| j j d d � d | _ Yq�Xn t d � � Wn3 | j } d | _ | j s*| j � n � Yn Xd S)z>Open the ZIP file with mode read "r", write "w" or append "a".r� �w�az(ZipFile() requires mode "r", "w", or "a"Fr �b� NrL r0 �wbzr+br r� Tr z Mode must be "r", "w" or "a")r� r� r )r� r� � _allowZip64�
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zZipFile.__init__c C s | S)Nr )ru r r r � __enter__� s zZipFile.__enter__c C s | j � d S)N)r� )ru �type�value� tracebackr r r �__exit__� s zZipFile.__exit__c C s� | j } y t | � } Wn t k
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