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Read and write ZIP files.
XXX references to utf-8 need further investigation.
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BadZipFile
BadZipfileerror
ZIP_STORED ZIP_DEFLATED ZIP_BZIP2ZIP_LZMA
is_zipfileZipInfoZipFile PyZipFile LargeZipFilec @ s e Zd ZdS )r N)__name__
__module__ __qualname__ r r /usr/lib64/python3.6/zipfile.pyr + s c @ s e Zd ZdZdS )r
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Raised when writing a zipfile, the zipfile requires ZIP64 extensions
and those extensions are disabled.
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C s t j}d}g }d }}xf|d t| kr||| ||d \}}|d | } ||krv||krn|j| || | }d}| }qW |s| S dj|S )NFr r T )_EXTRA_FIELD_STRUCTunpacklenappendjoin)
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rP Y nX |S )zQuickly 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
r r r z3zipfiles that span multiple disks are not supported)seeksizeEndCentDir64Locatorr8 r; r. structr- structEndArchive64LocatorstringEndArchive64Locatorr sizeEndCentDir64structEndArchive64stringEndArchive64_ECD_SIGNATURE_ECD_DISK_NUMBER_ECD_DISK_START_ECD_ENTRIES_THIS_DISK_ECD_ENTRIES_TOTAL _ECD_SIZE _ECD_OFFSET)fpinoffsetendrecdataZsigZdisknoZreloffZdisksZszcreate_versionZ read_versionZdisk_numZdisk_dirZdircountZ dircount2ZdirsizeZ diroffsetr r r
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tjt |}|t }||t |t | }|j | |j || t | || | |S dS ) zReturn 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 r i )rA tellsizeEndCentDirr8 r; r. stringEndArchiverC r- structEndArchivelistr/ rU maxrfind_ECD_COMMENT_SIZE) rP ZfilesizerS rR ZmaxCommentStartr3 ZrecDataZ commentSizecommentr r r r7 s>
r7 c @ sV e Zd ZdZd(Zd*ddZdd Zd+d d Zd d! Zd"d# Z e
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z>Class with attributes describing each file in the ZIP archive.
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compress_size file_size _raw_timeNoName r r c C s || _ |jtd}|dkr(|d| }tjdkrJtj|krJ|jtjd}|| _|| _|d dk rjtdt | _
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jdkrd| _nd| _t| _t| _d| _d| _d| _d| _d| _d S )Nr /i z+ZIP does not support timestamps before 1980r+ Zwin32r )r` findchrossepreplacer? ra
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| | S )z-Return the per-file header as a bytes object.r i r$ r r! r r r& r r Nz<HHQQz'Filesize would require ZIP64 extensionsl )ra rf rk rl rm r1 ZIP64_LIMITrC packcalcsizer
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r8 | j jd| jdB fS X d S )Nasciizutf-8i )r? encoderf UnicodeEncodeError)r{ r r r r s z ZipInfo._encodeFilenameFlagsc C s( | j }tj}xt|dkr"|d|d d \}}|dkr|dkrZ|d|dd }nV|dkrv|d|dd }n:|d
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}| jdkr|| | _|d7 }| jdkr|| | _|d7 }| jdkr| j}|| | _|d7 }||d d }qW d S )Nr z<HHr z<QQQ r z<QQr r z<Qr r z"Corrupt extra field %04x (size=%d) )r r )r1 rC r- r. r rm rl rj )r{ r1 r- tplnZcountsidxoldr r r _decodeExtra s4
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tjfkr|dd }qjW |r|d7 }| ||}|jd@ d> |_|rd|_| jdO _n|j|_|S )a_ Construct an appropriate ZipInfo for a file on the filesystem.
filename should be the path to a file or directory on the filesystem.
arcname is the name which it will have within the archive (by default,
this will be the same as filename, but without a drive letter and with
leading path separators removed).
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zZipInfo.from_filec C s | j d dkS )z2Return True if this archive member is a directory.r rq )r? )r{ r r r r s zZipInfo.is_dir)r` r? ra rb r_ r1 rc rT rd re rf rg rh ri rj rk rl rm rn rp r r r r r )ro r )N)N)
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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 sh d} dgd }xTt dD ]H}|}x6t dD ]*}|d@ rH|d? d@ | A }q*|d? d@ }q*W |||< qW |S )zGenerate 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().
l q[ r r r i)range)Zpolytabler4 crcr5 r r r _GenerateCRCTable# s
z _ZipDecrypter._GenerateCRCTableNc C s |d? d@ | j ||A d@ A S )z(Compute the CRC32 primitive on one byte.r i )crctable)r{ Zchr r r r _crc327 s z_ZipDecrypter._crc32c C sB t jd krt j t _d| _d| _d| _x|D ]}| j| q,W d S )NixV4igE#ixV4)r r r key0key1key2 _UpdateKeys)r{ pwdpr r r r| ; s
z_ZipDecrypter.__init__c C sX | j || j| _| j| jd@ d@ | _| jd d d@ | _| j | jd? d@ | j| _d S )Nr l ir r )r r r r )r{ cr r r r D s z_ZipDecrypter._UpdateKeysc C s> t |tst| jdB }|||dA d? d@ A }| j| |S )zDecrypt a single character.r r r r )r intAssertionErrorr r )r{ r kr r r __call__J s
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d | _ d S )N)_comp)r{ r r r r| U s zLZMACompressor.__init__c C sF t jdt ji}t jt jt jt j|gd| _tjdddt || S )Nid)filtersz<BBHr$ r )
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zLZMACompressor.flushN)r r r r| r r r r r r r r S s r c @ s e Zd Zdd Zdd ZdS )LZMADecompressorc C s d | _ d| _d| _d S )Nr+ F)_decomp _unconsumedeof)r{ r r r r| l s zLZMADecompressor.__init__c C s | j d kr| j|7 _t| jdkr*dS tjd| jdd \}t| jd| krXdS tjtjtjtj | jdd| gd| _ | jd| d }| `| j j
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nJ| tkr tsTtdn4| tkr6tsTtdn | tkrLtsTtdntdd S )Nz.Compression requires the (missing) zlib modulez-Compression requires the (missing) bz2 modulez.Compression requires the (missing) lzma modulez(That compression method is not supported) r r zlib RuntimeErrorr bz2r r NotImplementedError) compressionr r r _check_compression s r c C s@ | t krtjtjtjdS | tkr*tj S | tkr8t S d S d S )Nr( i)
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ddZdd ZdS ) _SharedFilec C s" || _ || _|| _|| _|| _d S )N)_file_pos_close_lock_writing)r{ fileposcloselockZwritingr r r r| s
z_SharedFile.__init__r c C sL | j < | j rtd| jj| j | jj|}| jj | _|S Q R X d S )NzyCan't read from the ZIP file while there is an open writing handle on it. Close the writing handle before trying to read.)r r rw r rA r r; rW )r{ nrS r r r r; s z_SharedFile.readc C s$ | j d k r | j }d | _ | j| d S )N)r r )r{ fileobjr r r r s
z_SharedFile.closeNr )r )r r r r| r; r r r r r r s
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Zd S ) _Tellablec C s || _ d| _d S )Nr )r9 rQ )r{ r9 r r r r| s z_Tellable.__init__c C s | j j|}| j|7 _|S )N)r9 writerQ )r{ rS r r r r r s z_Tellable.writec C s | j S )N)rQ )r{ r r r rW s z_Tellable.tellc C s | j j d S )N)r9 r )r{ r r r r s z_Tellable.flushc C s | j j d S )N)r9 r )r{ r r r r s z_Tellable.closeN)r r r r| r rW r r r r r r r s
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ZipExtFilezZFile-like object for reading an archive member.
Is returned by ZipFile.open().
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zZipExtFile.__init__c C sv d| j j| j jf g}| jsX|jd| j| jf | jtkrb|jdt j
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zZipExtFile.__repr__c C sL |dk r>| j jd| jd }|dkr>| j | j| }|| _|S tjj| |S )zrRead and return a line from the stream.
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r )r rr r ioBufferedIOBasereadline)r{ limitr4 liner r r r 1 s zZipExtFile.readlinec C sr |t | j| j kr\| j|}t || jkrJ|| j| jd | _d| _n| jt |8 _| j| j| jd S )z6Returns buffered bytes without advancing the position.Nr i )r. r r r; )r{ r chunkr r r peekA s
zZipExtFile.peekc C s dS )NTr )r{ r r r readableN s zZipExtFile.readablec C s |dks|dk rL| j | jd }d| _ d| _x| jsF|| j| j7 }q.W |S || j }|t| j k r~| j | j| }|| _|S |t| j }| j | jd }d| _ d| _x^|dko| j r| j|}|t|k r|| _ || _||d| 7 }P ||7 }|t|8 }qW |S )zRead and return up to n bytes.
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Nr r+ )r r r _read1MAX_Nr. )r{ r bufendrS r r r r; Q s4
zZipExtFile.readc C s@ | j d krd S t|| j| _| jr<| j| j kr<td| j d S )NzBad CRC-32 for file %r)r
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zZipExtFile._update_crcc C s |dks|dk rV| j | jd }d| _ d| _x$| jsP| j| j}|r.||7 }P q.W |S || j }|t| j k r| j | j| }|| _|S |t| j }| j | jd }d| _ d| _|dkr xN| js
| j|}|t|k r|| _ || _||d| 7 }P |r||7 }P qW |S )z7Read up to n bytes with at most one read() system call.Nr r+ )r r r r r r. )r{ r r rS r r r r read1| s>
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_file_size_compress_size_crc)r{ zfr r r r r r| s z_ZipWriteFile.__init__c C s | j jS )N)r+ r9 )r{ r r r r s z_ZipWriteFile._fileobjc C s dS )NTr )r{ r r r writable s z_ZipWriteFile.writablec C sf | j rtdt|}| j|7 _t|| j| _| jrV| jj|}| jt|7 _| j j
| |S )Nz I/O operation on closed file.) r rw r. r- r r/ r, r r. r r )r{ rS nbytesr r r r s z_ZipWriteFile.writec sX | j r
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d<ddZdd Zdd Zdd Zedd Zejd d Zd=d d Zd>d d!d"d#Zd?d$d%Zd@d&d'ZdAd(d)Zed*d+ Zd,d- Z d.d/ Z dBd0d1Z dCd2d3Z d4d5 Z d6d7 Z!d8d9 Z"d:d; Z#dS )Dr 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', exclusive create 'x',
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 | jj"dd d| _| jj | _ Y nX nt dW n$ | j}d| _| j$| Y nX dS )z]Open the ZIP file with mode read 'r', write 'w', exclusive create 'x',
or append 'a'.r8 wxaz+ZipFile requires mode 'r', 'w', 'x', or 'a'Fr Nr+ r< zw+bzx+bzr+bwbZxb)r8 r9 r: r; zr+bzw+bzx+br r Tr z"Mode must be 'r', 'w', 'x', or 'a')r8 r9 r: r; )r9 r: )%rw r _allowZip64
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zZipFile.__init__c C s | S )Nr )r{ r r r __enter__ s zZipFile.__enter__c C s | j d S )N)r )r{ typevalue tracebackr r r __exit__ s zZipFile.__exit__c C s d| j j| j jf g}| jd k rd| jr8|jd| j n| jd k rR|jd| j |jd| j n
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|| dS )a Add all files from "pathname" to the ZIP archive.
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archive. Added modules are always module.pyc.
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