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byterange.pyc
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� y]Rc@s�ddlZddlZddlZddlZddlZdZyddlmZWn#e k r{Z ddlmZnXdefd��YZdej fd��YZdefd��YZd dd ��YZdejfd��YZdd lmZmZmZmZmZmZmZddlZddlZddlZddlZddlZdejfd��YZ dej!fd��YZ!da"d�Z#d�Z$d�Z%dS(i����N(tStringIOt RangeErrorcBseZdZRS(s6Error raised when an unsatisfiable range is requested.(t__name__t __module__t__doc__(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR"stHTTPRangeHandlercBs eZdZd�Zd�ZRS(s�Handler that enables HTTP Range headers. This was extremely simple. The Range header is a HTTP feature to begin with so all this class does is tell urllib2 that the "206 Partial Content" response from the HTTP server is what we expected. Example: import urllib2 import byterange range_handler = range.HTTPRangeHandler() opener = urllib2.build_opener(range_handler) # install it urllib2.install_opener(opener) # create Request and set Range header req = urllib2.Request('http://www.python.org/') req.header['Range'] = 'bytes=30-50' f = urllib2.urlopen(req) cCs1tj|||j��}||_||_|S(N(turllibt addinfourltget_full_urltcodetmsg(tselftreqtfpR R thdrstr((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pythttp_error_206>s cCstdd��dS(Ni sRequested Range Not Satisfiable(R(RRR R R R((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pythttp_error_416Es(RRRRR(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR&s tHTTPSRangeHandlercBs eZdZd�Zd�ZRS(s! Range Header support for HTTPS. cCs|j|||||�S(N(R(RRR R R R((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pythttps_error_206LscCs|j|||||�dS(N(thttps_error_416(RRR R R R((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyROs(RRRRR(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyRIs tRangeableFileObjectcBsheZdZd�Zd�Zd�Zdd�Zdd�Zdd�Zd �Z d �Z d�ZRS(s"File object wrapper to enable raw range handling. This was implemented primarilary for handling range specifications for file:// urls. This object effectively makes a file object look like it consists only of a range of bytes in the stream. Examples: # expose 10 bytes, starting at byte position 20, from # /etc/aliases. >>> fo = RangeableFileObject(file('/etc/passwd', 'r'), (20,30)) # seek seeks within the range (to position 23 in this case) >>> fo.seek(3) # tell tells where your at _within the range_ (position 3 in # this case) >>> fo.tell() # read EOFs if an attempt is made to read past the last # byte in the range. the following will return only 7 bytes. >>> fo.read(30) cCs>||_t|�\|_|_d|_|j|j�dS(sCreate a RangeableFileObject. fo -- a file like object. only the read() method need be supported but supporting an optimized seek() is preferable. rangetup -- a (firstbyte,lastbyte) tuple specifying the range to work over. The file object provided is assumed to be at byte offset 0. iN(tfotrange_tuple_normalizet firstbytetlastbytetrealpost_do_seek(RRtrangetup((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyt__init__gs cCs/t|j|�r"t|j|�St|�dS(s�This effectively allows us to wrap at the instance level. Any attribute not found in _this_ object will be searched for in self.fo. This includes methods.N(thasattrRtgetattrtAttributeError(Rtname((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyt__getattr__uscCs|j|jS(s5Return the position within the range. This is different from fo.seek in that position 0 is the first byte position of the range tuple. For example, if this object was created with a range tuple of (500,899), tell() will return 0 when at byte position 500 of the file. (RR(R((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyttell}sicCs�|dkst�|dkr.|j|}n7|dkrJ|j|}n|dkretd��n|jr�||jkr�|j}n|j||j�dS(seSeek within the byte range. Positioning is identical to that described under tell(). iiis$seek from end of file not supported.N(iii(tAssertionErrorRRtIOErrorRR(Rtoffsettwhencet realoffset((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pytseek�si����cCs:|j|�}|jj|�}|jt|�7_|S(s`Read within the range. This method will limit the size read based on the range. (t_calc_read_sizeRtreadRtlen(Rtsizetrslt((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR+�scCs:|j|�}|jj|�}|jt|�7_|S(sfRead lines within the range. This method will limit the size read based on the range. (R*RtreadlineRR,(RR-R.((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR/�scCsX|jrT|dkrA|j||jkrQ|j|j}qQqT|j|j}n|S(sSHandles calculating the amount of data to read based on the range. i����(RR(RR-((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR*�s cCs^|dkst�t|jd�s4|j|�n|jj|j|�|j|7_dS(s�Seek based on whether wrapped object supports seek(). offset is relative to the current position (self.realpos). iR)N(R$RRt_poor_mans_seekR)R(RR&((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR�s cCs�d}d}xm||kr{|||kr8||}n|jj|�}t|�|krntdd��n||7}qWdS(s�Seek by calling the wrapped file objects read() method. This is used for file like objects that do not have native seek support. The wrapped objects read() method is called to manually seek to the desired position. offset -- read this number of bytes from the wrapped file object. raise RangeError if we encounter EOF before reaching the specified offset. iii sRequested Range Not SatisfiableN(RR+R,R(RR&tpostbufsizetbuf((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR0�s (RRRRR"R#R)R+R/R*RR0(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyRRs tFileRangeHandlercBseZdZd�ZRS(s~FileHandler subclass that adds Range support. This class handles Range headers exactly like an HTTP server would. c Cs�ddl}ddl}|j�}|j�}tj|�}tj|�}|tj}t j |tj�} |j|�d} |r�tj |�\}}|s�tj|�|j�kr�tjd��q�nt|d�}|jjdd�} t| �} | dkst�| r�| \}}|dkr>|}n|dksb||ksb||krttdd��n||}t|||f�}n|jtd | p�d || f��}tj||d|�S( Ni����isfile not on local hosttrbtRangeti sRequested Range Not Satisfiables6Content-Type: %s Content-Length: %d Last-modified: %s s text/plainsfile:((t mimetypest mimetoolstget_hosttget_selectorRturl2pathnametoststattST_SIZEtrfc822t formatdatetST_MTIMEt guess_typet splitporttsockett gethostbynamet get_namesturllib2tURLErrortopentheaderstgettNonetrange_header_to_tupleR$RRtMessageRR(RRR8R9thosttfilet localfiletstatsR-tmodifiedtmtypetportRtbrangetfbtlbRK((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pytopen_local_file�s: ! $ (RRRRZ(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR4�s(RDt splitusertsplitpasswdt splitattrtunquotetaddclosehookRtFTPRangeHandlercBseZd�Zd�ZRS(cCs�|j�}|std�nt|�\}}|dkrHtj}nt|�}t|�\}}|r�t|�\}}nd}t |�}t |p�d�}t |p�d�}yt j|�}Wn%t jk r�}t j|��nXt|j��\}}|jd�} tt | �} | d | d} } | r[| dr[| d} ny$|j||||| �}| r�dp�d }xM|D]E} t| �\} }| j�d kr�|dkr�|j�}q�q�Wd}t|jjdd��}|dkst�|r8|\}}|dkr8|}q8n|j| ||�\}}|r�|\}}|dkr�|dks�|dkr�tdd��n|}||}|dkr�tdd��q�q�||}t|d|f�}nd}tj|j��d}|r$|d|7}n|dk rM|dkrM|d|7}nt |�}t!j"|�}t#|||j��SWn2tj$k r�}td|ft%j&�d�nXdS(Ns ftp errors no host givenR7t/i����iitItDttypetatAtitdR6i s@Requested Range Not Satisfiable due to unobtainable file length.sRequested Range Not SatisfiablesContent-Type: %s sContent-Length: %d i(s ftp errors no host given(ReRfRgRbRhRc(('R:R%RDRMtftplibtFTP_PORTtintR[R\R^RERFterrorRHRIR]R;tsplittmaptconnect_ftptlowertupperRNRKRLR$tretrfileRRR8RCRRR9RORt all_errorstsystexc_info(RRRPRVtusertpasswdR tpathtattrstdirsRQtfwRdtattrtvaluetrestt range_tupRXRYR tretrlenRKRUtsf((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pytftp_open s| cCst|||||�}|S(N(t ftpwrapper(RRvRwRPRVRzR{((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyRoXs(RRR�Ro(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR` s NR�cBseZdd�ZRS(c Cs|j�|dkr%d}d}nd|}d}y|jj|�Wn.tjk ry|j�|jj|�nXd}|r�|r�y|jj|�Wn2tjk r�}t d|ft j�d�nX|jj|�y#d |}|jj||�}Wq�tjk r�}t |�d dkrk|j||�\}} t||df�}|| fSt |�d d kr�t d|ft j�d�q�q�Xn|s�|jjd�|r�d|}nd}|jj|�}nd|_t|djd�|j�|dfS(NRhRcsTYPE AisTYPE is ftp errorisRETR it501R7t550sLIST tLISTR5(RhRc(tendtransfertftptvoidcmdRiRstinitRMtnlstt error_permR%RtRutntransfercmdtstrRrRtbusyR_tmakefile( RRQRdR~tcmdtisdirtconntreasonR R�((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyRrasJ & N(RRRMRr(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR�\scCs�|dkrdStdkr:ddl}|jd�antj|�}|r�t|jdd��}|r�|dr�|d|ddf}n|SdS(s�Get a (firstbyte,lastbyte) tuple from a Range header value. Range headers have the form "bytes=<firstbyte>-<lastbyte>". This function pulls the firstbyte and lastbyte values and returns a (firstbyte,lastbyte) tuple. If lastbyte is not specified in the header value, it is returned as an empty string in the tuple. Return None if range_header is None Return () if range_header does not conform to the range spec pattern. i����Ns^bytes=(\d{1,})-(\d*)iii((RMt_rangeretretcompiletmatchRtgroup(trange_headerR�R�ttup((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyRN�scCsS|dkrdSt|�}|rO|drG|d|ddf}nd|SdS(s�Convert a range tuple to a Range header value. Return a string of the form "bytes=<firstbyte>-<lastbyte>" or None if no range is needed. iisbytes=%s-%sN(RMR(R((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pytrange_tuple_to_header�s cCs�|dkrdS|d}|dkr/d}nt|�}y|d}Wntk rbd}n1X|dkrxd}n|dkr�t|�}n||fdkr�dS||kr�tdd||f��n||fS( s7Normalize a (first_byte,last_byte) range tuple. Return a tuple whose first element is guaranteed to be an int and whose second element will be '' (meaning: the last byte) or an int. Finally, return None if the normalized tuple == (0,'') as that is equivalent to retrieving the entire file. iR7ii sInvalid byte range: %s-%sN(NR7(iR7(RMRkt IndexErrorR(RRXRY((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyR�s& ((&R=R>RRHR@RMtDEBUGt cStringIORtImportErrorR R%RtBaseHandlerRRRtFileHandlerR4RDR[R\R]R^R_RRiRERtR8R9t FTPHandlerR`R�R�RNR�R(((s8/usr/lib/python2.7/site-packages/urlgrabber/byterange.pyt<module>s4# �+4S4
/home/../lib/python2.7/site-packages/rhn/../urlgrabber/byterange.pyc