o . All rights reserved. This software is available under a BSD license; see https://github.com/mstamy2/PyPDF2/blob/master/LICENSE N)isStringz(0|-?[1-9]\d*)z%^({int}|({int}?(:{int}?(:{int}?)?)))$intc@s eZdZdS) ParseErrorN)__name__ __module__ __qualname__r r B/var/www/html/env/lib/python3.10/site-packages/PyPDF2/pagerange.pyrsraRemember, 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. c@sZeZdZdZddZejrejjede_eddZddZ d d Z d d Z d dZ dS) PageRangeaC A slice-like representation of a range of page indices, i.e. 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. o PageRange(str) parses a string representing a page range. o PageRange(slice) directly "imports" a slice. o to_slice() gives the equivalent slice. o str() and repr() allow printing. o indices(n) is like slice.indices(n). cCst|tr ||_dSt|tr||_dSt|ott|}|s&t || drDt | d}|dkr:|dnd}t|||_dStdd| ddd D|_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. {page_range_help} 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. NrcSsg|] }|r t|ndqS)Nr).0gr r r Psz&PageRange.__init__..) isinstanceslice_slicer to_slicerrematch PAGE_RANGE_RErgroupr)selfargmstartstopr r r __init__2s     zPageRange.__init__)page_range_helpcCs,t|tpt|tpt|ottt|S)z7 True if input is a valid initializer for a PageRange. )rrr rboolrrr)inputr r r validWs zPageRange.validcCs|jS)z1 Return the slice equivalent of this page range. )rrr r r r_szPageRange.to_slicecCsf|j}|jdkr!|jdkr|j|jdkrt|jS|j|jf}n|j|j|jf}ddd|DS)z A string like "1:2:3". Nr:css$|] }|dkr dnt|VqdS)N)str)rir r r ms"z$PageRange.__str__..)rstepr r!r*join)rsindicesr r r __str__cs  zPageRange.__str__cCsdtt|dS)z% A string like "PageRange('1:2:3')". z PageRange())reprr*r'r r r __repr__oszPageRange.__repr__cCs |j|S)z n is the length of the list of pages to choose from. Returns arguments for range(). See help(slice.indices). )rr0)rnr r r r0ss zPageRange.indicesN) rrr __doc__r"formatPAGE_RANGE_HELP staticmethodr&rr1r4r0r r r r r $s "  r r(cCslg}d}d}|dgD](}t|r$|std||t|fd}q |r/|s/||tf|}d}q |S)a0 Given a list of filenames and page ranges, return a list of (filename, page_range) pairs. First arg must be a filename; other ags are filenames, page-range expressions, slice objects, or PageRange objects. A filename not followed by a page range indicates all pages of the file. NFz8The first argument must be a filename, not a page range.T)r r& ValueErrorappendPAGE_RANGE_ALL)argspairs pdf_filenamedid_page_rangerr r r parse_filename_page_ranges~s rA)r6rutilsr_INT_REr7r Exceptionrr8objectr r<rAr r r r s  W