%%
%% This is file `zref-perpage.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% zref.dtx  (with options: `perpage')
%% 
%% This is a generated file.
%% 
%% Project: zref
%% Version: 2023-09-14 v2.35
%% 
%% Copyright (C)
%%   2006-2012 Heiko Oberdiek
%%   2016-2023 Oberdiek Package Support Group
%% 
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either
%% version 1.3c of this license or (at your option) any later
%% version. This version of this license is in
%%    https://www.latex-project.org/lppl/lppl-1-3c.txt
%% and the latest version of this license is in
%%    https://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of
%% LaTeX version 2005/12/01 or later.
%% 
%% This work has the LPPL maintenance status "maintained".
%% 
%% The Current Maintainers of this work are
%% Heiko Oberdiek and the Oberdiek Package Support Group
%% https://github.com/ho-tex/zref/issues
%% 
%% This work consists of the main source file zref.dtx
%% and the derived files
%%    zref.sty, zref.pdf, zref.ins, zref.drv, zref-base.sty,
%%    zref-abspage.sty, zref-abspos.sty, zref-counter.sty,
%%    zref-dotfill.sty, zref-env.sty, zref-hyperref.sty,
%%    zref-lastpage.sty, zref-marks.sty, zref-nextpage.sty,
%%    zref-pageattr.sty, zref-pagelayout.sty, zref-perpage.sty,
%%    zref-runs.sty, zref-savepos.sty, zref-thepage.sty,
%%    zref-titleref.sty, zref-totpages.sty, zref-user.sty,
%%    zref-xr.sty, zref-example.tex, zref-example-lastpage.tex,
%%    zref-example-nextpage.tex, zref-test1.tex,
%%    zref-test-base.tex, zref-test-runs.tex,
%%    zref-test-titleref-memoir.tex.
%% 
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{zref-perpage}%
  [2023-09-14 v2.35 Module perpage for zref (HO)]%
\RequirePackage{zref-base}[2019/11/29]
\ifx\ZREF@base@ok Y%
\else
  \expandafter\endinput
\fi
\RequirePackage{zref-abspage}[2019/11/29]
\ZREF@NewPropPageValue
\zref@newlist{perpage}
\zref@addprops{perpage}{abspage,page,pagevalue}
\newcounter{zpage}
\zref@require@unique
\let\ZREF@org@stepcounter\stepcounter
\def\stepcounter#1{%
  \ifcsname @stepcounterhook@#1\endcsname
    \csname @stepcounterhook@#1\endcsname
  \fi
  \ZREF@org@stepcounter{#1}%
}
\IfFormatAtLeastTF{2020/10/01}
  {
    \AddToHook{package/amstext/after}
      {\def\stepcounter#1{%
        \iffirstchoice@
         \ifcsname @stepcounterhook@#1\endcsname
           \csname @stepcounterhook@#1\endcsname
         \fi
         \addtocounter{#1}\@ne
         \begingroup \let\@elt\@stpelt \csname cl@#1\endcsname \endgroup
       \fi
     }}
  }{}
\let\ZREF@org@@stpelt\@stpelt
\def\@stpelt#1{%
  \ifcsname ZREF@perpage@#1\endcsname
    \begingroup
      \let\stepcounter\ZREF@org@stepcounter
      \ZREF@org@@stpelt{#1}%
    \endgroup
    \expandafter\ltx@gobbletwo
  \fi
  \ZREF@org@@stpelt{#1}%
}
\ZREF@IfDefinable\zmakeperpage\def{%
  {%
    \@ifnextchar[\ZREF@makeperpage@opt{\ZREF@@makeperpage[\ltx@zero]}%
  }%
}
\def\ZREF@makeperpage@opt[#1]{%
  \begingroup
    \edef\x{\endgroup
      \noexpand\ZREF@@makeperpage[\number\numexpr#1-1\relax]%
    }%
  \x
}
\def\ZREF@@makeperpage[#1]#2{%
  \@ifundefined{@stepcounterhook@#2}{%
    \expandafter\gdef\csname @stepcounterhook@#2\endcsname{}%
  }{}%
  \expandafter\gdef\csname ZREF@perpage@#2\endcsname{%
    \ZREF@@perpage@step{#2}{#1}%
  }%
  \expandafter\g@addto@macro\csname @stepcounterhook@#2\endcsname{%
    \ifcsname ZREF@perpage@#2\endcsname
      \csname ZREF@perpage@#2\endcsname
    \fi
  }%
}
\def\ZREF@@perpage@step#1#2{%
  \global\advance\c@zref@unique\ltx@one
  \begingroup
    \expandafter
    \zref@labelbylist\expandafter{\thezref@unique}{perpage}%
    \zref@ifrefundefined\thezref@unique{%
      \global\c@zpage=\c@page
      \global\let\thezpage\thepage
      \expandafter\xdef\csname ZREF@abspage@#1\endcsname{%
        \number\c@abspage
      }%
    }{%
      \global\c@zpage=\zref@extract\thezref@unique{pagevalue}\relax
      \xdef\thezpage{\noexpand\zref@extract{\thezref@unique}{page}}%
      \expandafter\xdef\csname ZREF@abspage@#1\endcsname{%
        \zref@extractdefault\thezref@unique
            {abspage}{\number\c@abspage}%
      }%
    }%
    \expandafter\ifx\csname ZREF@abspage@#1\expandafter\endcsname
                    \csname ZREF@currentabspage@#1\endcsname
    \else
      \global\csname c@#1\endcsname=#2\relax
      \global\expandafter\let
          \csname ZREF@currentabspage@#1\expandafter\endcsname
          \csname ZREF@abspage@#1\endcsname
    \fi
  \endgroup
}
\ZREF@IfDefinable\zunmakeperpage\def{%
  #1{%
    \global\expandafter
    \let\csname ZREF@perpage@#1\endcsname\@undefined
  }%
}
\endinput
%%
%% End of file `zref-perpage.sty'.
