Ng dZddlZddlmZmZmZmZddlmZdZ de de d e d e d Z Gd d Z e d Z deee e dfdeee e ffdZee e eeefeeeefeefZdS)z Representation and utils for ranges of PDF file pages. Copyright (c) 2014, Steve Witham . All rights reserved. This software is available under a BSD license; see https://github.com/py-pdf/pypdf/blob/main/LICENSE N)AnyListTupleUnion) ParseErrorz(0|-?[1-9]\d*)z^(z|(z?(:z?)?)))$ceZdZdZdeedefddfdZede de fdZ defdZ defd Z defd Zd edeeeeffd Zd ede fdZddZdS) PageRangeaJ A slice-like representation of a range of page indices. For example, page numbers, only starting at zero. The syntax is like what you would put between brackets [ ]. The slice is one of the few Python types that can't be subclassed, but this class converts to and from slices, and allows similar use. - PageRange(str) parses a string representing a page range. - PageRange(slice) directly "imports" a slice. - to_slice() gives the equivalent slice. - str() and repr() allow printing. - indices(n) is like slice.indices(n). argreturnNc2t|tr ||_dSt|tr||_dSt|t ot jt|}|st|| drFt| d}|dkr|dznd}t|||_dStd| dddD|_dS) a Initialize with either a slice -- giving the equivalent page range, or a PageRange object -- making a copy, or a string like "int", "[int]:[int]" or "[int]:[int]:[int]", where the brackets indicate optional ints. Remember, page indices start with zero. Page range expression examples: : all pages. -1 last page. 22 just the 23rd page. :-1 all but the last page. 0:3 the first three pages. -2 second-to-last page. :3 the first three pages. -2: last two pages. 5: from the sixth page onward. -3:-1 third & second to last. The third, "stride" or "step" number is also recognized. ::2 0 2 4 ... to the end. 3:0:-1 3 2 1 but not 0. 1:10:2 1 3 5 7 9 2::-1 2 1 0. ::-1 all pages in reverse order. Note the difference between this notation and arguments to slice(): slice(3) means the first three pages; PageRange("3") means the range of only the fourth page. However PageRange(slice(3)) means the first three pages. Nrc4g|]}|rt|ndS)N)int).0gs K/var/www/html/ai-engine/env/lib/python3.11/site-packages/pypdf/pagerange.py z&PageRange.__init__..Ms'!R!R!RAA"7#a&&&4!R!R!R) isinstanceslice_slicer to_slicestrrematch PAGE_RANGE_RErgroupr)selfr mstartstops r__init__zPageRange.__init__$s0 c5 ! ! DK F c9 % % ,,..DK F sC ARXmS%A%A TS// ! WWQZZ T OOE % 5199Dt,,DKKK!R!RAqAQAQ!R!R!RSDKKKrinputct|ttfp;t|to&t t jt|S)z True if input is a valid initializer for a PageRange. Args: input: A possible PageRange string or a PageRange object. Returns: True, if the ``input`` is a valid PageRange. )rrr rboolrr r!)r(s rvalidzPageRange.validOsF%%!344 uc " " KtBH]E,J,J'K'K rc|jS)z/Return the slice equivalent of this page range.)rr#s rrzPageRange.to_slice_s {rc|j}|j=|j'|j|jdzkrt |jS|j|jf}n|j|j|jf}dd|DS)zA string like "1:2:3".Nr:c3<K|]}|dnt|VdS)N)r)ris r z$PageRange.__str__..ns0EEaiSVVEEEEEEr)rstepr%r&rjoin)r#sindicess r__str__zPageRange.__str__csz K 6>w"qv1'<'<17||#gqvoGGgqvqv-GxxEEWEEEEEErcFdtt|zdzS)z#A string like "PageRange('1:2:3')".z PageRange())reprrr-s r__repr__zPageRange.__repr__psd3t99oo-33rnc6|j|S)a/ Assuming a sequence of length n, calculate the start and stop indices, and the stride length of the PageRange. See help(slice.indices). Args: n: the length of the list of pages to choose from. Returns: Arguments for range(). )rr7)r#r=s rr7zPageRange.indicests{""1%%%rothercPt|tsdS|j|jkS)NF)rr r)r#r?s r__eq__zPageRange.__eq__s(%++ 5{el**rc t|tstdt||jj |jjt d|jj|jjf}|jj|jjf}|d|dkr||}}|d|dkrt dtt|dt|d|dS)NzCan't add PageRange and zCan't add PageRange with striderrzCan't add PageRanges with gap) rr TypeErrortyperr4 ValueErrorr%r&rmax)r#r?abs r__add__zPageRange.__add__s%++ FDtE{{DDEE E ;  '5<+<+H>?? ? K t{/ / L  1 1 Q4!A$;;aqA Q4!A$;;<== =qtS1qt__55666r)r?r r r )__name__ __module__ __qualname____doc__rrrr' staticmethodrr*r+rr8r<rrr7objectrArIrrr r s: )TE%c"9:)Tt)T)T)T)TV  S  T    \  % F F F F F4#4444&&sC}!5&&&& +F+t++++ 777777rr r/argsr cg}d}d}|dgzD]x}t|r8|std||t|fd}T|r|s||tf|}d}y|S)a Given a list of filenames and page ranges, return a list of (filename, page_range) pairs. Args: args: A list where the first element is a filename. The other elements are filenames, page-range expressions, slice objects, or PageRange objects. A filename not followed by a page range indicates all pages of the file. Returns: A list of (filename, page_range) pairs. NFz8The first argument must be a filename, not a page range.T)r r+rEappendPAGE_RANGE_ALL)rQpairs pdf_filenamedid_page_ranger s rparse_filename_page_rangesrXs*,ELNtf}## ??3   #  N LL, #7 8 8 8!NN =N = lN;<<<L"NN Lr)rMrtypingrrrrerrorsr_INT_REr!r rTrrXr PageRangeSpecrPrrr]s4 ************ HWHHHHGHHHHH E7E7E7E7E7E7E7E7P3" uS)T)* +" %Y  """"Jc9eCHouS#s]7KTRUYVW r