o h, @sUdZdZdZddlZddlZddlmZddlmZm Z m Z m Z m Z ddl mZddlmZmZmZmZmZmZzdd lmZWneyPdd lmZYnwd d lmZmZeeeeefeeeefeeeeffZeed <eeeeeeefZeed <ee e e e fZ ee!e fZ"dZ#dZ$de%de%de%fddZ&dXde dee'de%fddZ(de de%fddZ)de de*fddZ+de ddfddZ, dYde d ed!e*de%fd"d#Z-de d$e'de%fd%d&Z.de de%fd'd(Z/d)ed*edefd+d,Z0de ddfd-d.Z1iZ2eee!e%fe%fed/<d0ee!e%fde%fd1d2Z3ed*e!de!fd3d4Z4ed*e%de!fd5d4Z4d*ee!e%fde!fd6d4Z4ed*e!de'fd7d8Z5ed*e%de%fd9d8Z5ed*e'de'fd:d8Z5d*ee'e!e%fdee'e%ffd;d8Z5d*e%de%fde'de!fd?d@Z7dAZ8dBe'dCe'dDe'de'fdEdFZ9dZdHe!dIe'ddfdJdKZ: Ld[dMe!dNe!dOe!ddfdPdQZ;d[dRe!dOe!ddfdSdTZd} |d}|s|s |S||7}t||kr |Sq)z~ Read non-whitespace characters and return them. Stops upon encountering whitespace or when maxchars is reached. Tr)readisspacer)r"r#txttokrrr read_until_whitespaceVs   r)cCs(|d}|tvr|d}|tvs |S)zEFind and read the next non-whitespace character (ignores whitespace).r)r% WHITESPACESr"r(rrr read_non_whitespacegs  r,cCs6td}d}|tvr|d}|d7}|tvs |dkS)zr Similar to read_non_whitespace, but return a Boolean if more than one whitespace character was read. rr)r*r%)r"r(Zcntrrr skip_over_whitespaceos r-cCsD|d}|dd|dkr|dvr |d}|dvsdSdSdS)Nr%)  )r%seekr+rrr skip_over_comment|s    r3Fregex ignore_eofcCsrd} |d}|s|r|Stt||}|dur4||d|7}||t|d |S||7}q)z Read until the regular expression pattern matched (ignore the match). :raises PdfStreamError: on premature end-of-file :param bool ignore_eof: If true, ignore end-of-line and return immediately :param regex: re.Pattern r$TNr)r%rrsearchstartr2r)r"r4r5namer(mrrr read_until_regexs   r;to_readcCsd||kr td|| t||}|| tt||kr0tdt|d|d|S)zGiven a stream at position X, read a block of size to_read ending at position X. The stream's position should be unchanged. z!Could not read malformed PDF filez EOF: read z , expected ?)tellrr2r r%r)r"r<r%rrr read_block_backwardss   r?cCsg}d}|dkrtt tt|}|dkrndt||}t|d}|sF|dkr@||dvr@|d8}|dkr@||dvs2|dkrFd}|rl|||dd|dkrk||dvrk|d8}|dkrk||dvs]n|||dkr~||dt nqd |dddS) a Given a byte stream with current position X, return the previous line. All characters between the first CR/LF byte found before X (or, the start of the file, if no such byte is found) and position X After this call, the stream will be positioned one byte after the first non-CRLF character found beyond the first CR/LF byte before X, or, if no such byte is found, at the beginning of the stream. FrTrs Nr$r.) r>rrminrr?rrr2r join)r"Z line_contentZ found_crlfr<blockidxrrr read_previous_lines8     "rDabcstfdd|DS)Nc3s*|]tfddtDVqdS)c3s(|]}tddt|DVqdS)css$|] \}}t|t|VqdSN)float).0ijrrr s"z6matrix_multiply....N)sumzip)rIcolrowrr rLs&z,matrix_multiply...N)tuplerN)rIrFrPr rLs  z"matrix_multiply..)rR)rErFrrSr matrix_multiplys rTcCsxd}|| dtdd}||||d|||Wdn1s.wY|| ddS)z5Create text file showing current location in context.irzPyPDF2_pdfLocation.txtwbsHEREN)r2openwriter%)r"ZradiusZ output_fhrrr mark_locations  rXB_CACHEscCs|t}||vr ||St|tr|Sz|d}t|dkr!|||<|WSty=|d}t|dkr9|||<|YSw)Nlatin-1zutf-8)rY isinstancebytesencoder Exception)rZbcrrrr b_s       rccCdSrGrrSrrr str_ recCrdrGrrSrrr rerfcCst|tr |dS|S)Nr[)r]r^decoderSrrr res  cCrdrGrrSrrr ord_rfrhcCrdrGrrSrrr rh"rfcCrdrGrrSrrr rh'rfcCst|tr t|S|SrG)r]strordrSrrr rh,s cCstd}||}|dS)N hex_codecrr)rFZcoderZcodedrrr hexencode2srlnumcCst|ddS)NL)hexreplace)rmrrr hex_str9srr) r0r1 leftupup_leftcCsT|||}t||}t||}t||}||kr"||kr"|S||kr(|S|SrG)abs)rvrwrxpZ dist_leftZdist_upZ dist_up_leftrrr paeth_predictor@s    r{msg stacklevelcCstj|t|ddS)N)r~)warningswarnPendingDeprecationWarning)r}r~rrr deprecateNsr3.0.0old_namenew_name removed_incCstt|||ddSN)rDEPR_MSGformat)rrrrrr deprecate_with_replacementRsrr9cCstt||ddSr)rDEPR_MSG_NO_REPLACEMENTr)r9rrrr deprecate_no_replacementXsrsrccCst||dS)a Use this instead of logger.warning directly. That allows people to overwrite it more easily. ## Exception, warnings.warn, logger_warning - Exceptions should be used if the user should write code that deals with an error case, e.g. the PDF being completely broken. - warnings.warn should be used if the user needs to fix their code, e.g. DeprecationWarnings - logger_warning should be used if the user needs to know that an issue was handled by PyPDF2, e.g. a non-compliant PDF being read in a way that PyPDF2 could apply a robustness fix to still read it. This applies mainly to strict=False mode. N)logging getLoggerwarning)r}rrrr logger_warning\srrG)F)r|)r)>__doc__ __author____author_email__rrcodecsriorrrrrosr typingr r r r rrr ImportErrortyping_extensionserrorsrrrHr__annotations__rZ StreamTyperiZ StrByteTyperrr^r!intr)r,boolr-r3r;r?rDrTrXrYrcrerhrlrrr*r{rrrrrrrr s    &      3   $