%%
%%
%% This is file 'pdfpagediff.sty'.
%%
%% File: pdfpagediff.sty Copyright (c) 2010-2015, C. V. Radhakrishnan
%% JWRA 34, Jagathy, Trivandrum 695014
%% http://www.cvr.cc Email: <cvr@cvr.cc>
%%
%% This package may be distributed under the terms of the LaTeX Project
%% Public License, as described in lppl.txt in the base LaTeX distribution.
%% Either version 1.0 or, at your option, any later version.
%%
%% $Id: pdfpagediff.sty,v 1.4 2015/07/24 09:39:20 cvr Exp cvr $
%%
\NeedsTeXFormat{LaTeX2e}
\def\Fileversion$#1: #2 ${\gdef\fileversion{#2}}
\def\Filedate$#1: #2 #3 ${\gdef\filedate{#2}}
\Fileversion$Revision: 1.4 $
\Filedate$Date: 2015/07/24 09:39:20 $
\ProvidesPackage{pdfpagediff}
[\filedate\space\fileversion\space Page diff of 2 PDFs (CVR)]
\PackageWarningNoLine{pdfpagediff}
{****************************************\MessageBreak
Package pdfpagediff v,\fileversion\space loaded\MessageBreak
[Page diff of two PDFs (CVR)]\MessageBreak
****************************************}
%
% Load needed packages:
%
\RequirePackage[margin=0pt,headsep=0pt,headheight=0pt,footskip=0pt]{geometry}
\RequirePackage{graphicx,color}
\pagestyle{empty}
\@ifundefined{pdfoutput}
{\PackageError{pdfpagediff}
{You're either not using pdfLaTeX\MessageBreak
or have turn off PDF output.\MessageBreak
'pdfpagediff' only works with pdfLaTeX\MessageBreak
and PDF output}
{Use 'pdflatex' instead of 'latex'\MessageBreak
and set output to PDF (usage: \pdfoutput = 1)!}
\endinput
}
{\ifnum\pdfoutput=\z@
\PackageError{pdfpagediff}
{PdfTeX is set to DVI output, but\MessageBreak
PDF is required for 'pdfpagediff' package}
{Set output to PDF. (usage: \pdfoutput = 1)}
\expandafter\endinput
\fi}
\def\obj{\immediate\pdfobj}
\def\objref#1{\space\expandafter\doobjref\number#1\relax}
\def\doobjref#1\relax{#1 0 R}
\def\objrefs#1{%
\ifx#1\relax
\space
\else
\objref{#1}\expandafter\objrefs
\fi}
\def\lastobjref{\objref\pdflastobj}
\def\thisobjref{\objref{\numexpr\pdflastobj+1\relax}}
\def\nextobjref{\objref{\numexpr\pdflastobj+2\relax}} % eTeX needed
%
% We will make two layers
%
\def\FirstDoc#1{\gdef\@FirstDoc{#1}}
\def\SecondDoc#1{\gdef\@SecondDoc{#1}}
\def\@FirstDoc{First}
\def\@SecondDoc{Second}
\def\openlayer{ BDC}
\def\closelayer{ EMC}
\obj{<< /Type /OCG /Name (\@FirstDoc) >>}
\def\PPDonercname{/OC1}
\edef\PPDoneobjnum{\the\pdflastobj}
\edef\PPDone{ /OC \PPDonercname}
\obj{<< /Type /OCG /Name (\@SecondDoc) >>}
\def\PPDtworcname{/OC2}
\edef\PPDtwoobjnum{\the\pdflastobj}
\edef\PPDtwo{ /OC \PPDtworcname}
\obj{%
<<
\PPDonercname\space\objref\PPDoneobjnum \space
\PPDtworcname\space\objref\PPDtwoobjnum \space
>>
}
\edef\layersnames{\lastobjref}
\edef\next{\pdfpageresources={/Properties \layersnames}}
\next
\edef\layersorder{\objrefs\PPDoneobjnum\PPDtwoobjnum\relax}
\edef\layerson{\objrefs\PPDoneobjnum\relax}
\edef\layersoff{\objrefs\PPDtwoobjnum\relax}
\obj{%
<<
/Order [\layersorder] \space
/ON [\layerson ] \space
% /OFF [\layersoff ] \space
/ON [\layersoff ] \space
>>
}
\edef\layersconfig{\lastobjref}
\obj{%
<<
/S /SetOCGState
/State [ /ON \objrefs\PPDoneobjnum\PPDtwoobjnum\relax ]
>>}
\edef\layersOn{\lastobjref}
\pdfcatalog{%
/OCProperties
<<
/OCGs [\layersorder ]\space
/D \layersconfig \space
>>
}
\parindent=0pt
\newcounter{cpages}
\newcounter{pages}
\newdimen\vlength
\newdimen\hoddlength
\newdimen\hevenlength
\vlength=-12pt
\hoddlength=0pt
\hevenlength=0pt
%
% Let's load substr package to parse various kinds of page numbers
%
\RequirePackage{substr}
\def\buildPageList#1{\IfSubStringInString{,}{#1}%
{\processComma{#1}}{\processOther{#1}}}
\def\processNormal#1{\pdf@addtolist{#1}}
\def\processComma#1{\@for\@comma:=#1\do{%
{\IfSubStringInString{-}{\@comma}%
{{\expandafter\@processHyphen\@comma\END}}%
{\processNormal{\@comma}}%
}%
}%
}
\def\processOther#1{\IfSubStringInString{-}{#1}%
{\processHyphen{#1}}{\processNormal{#1}}}
\def\processHyphen#1{\@processHyphen#1\END}
\def\@processHyphen#1-#2\END{\def\next{#2}\ifx\next\@empty
\@tempcntb=\pdflastpage \else \@tempcntb=#2\fi
\@tempcnta=#1
\global\advance\@tempcntb by 1
\loop\ifnum\@tempcnta<\@tempcntb
\pdf@addtolist{\the\@tempcnta}
\advance\@tempcnta by 1
\repeat}
\let\pdf@pagelist\@empty
\gdef\pdf@addtolist#1{%
\let\savepdf@pagelist\pdf@pagelist
\ifnum#1<\numexpr\pdflastpage+1
\xdef\pdf@pagelist{\ifx\savepdf@pagelist\@empty
\else\savepdf@pagelist,\fi#1}\fi}
\def\findPages#1{\pdfximage{#1}%
\@tempcntb=\the\pdflastximagepages\relax
\edef\lastpage{\the\@tempcntb}%
}
\newif\ifFiles \Filestrue
\def\layerPages{\@ifnextchar[{\@@layerPages}{\@@layerPages[1-]}}%]
\long\def\@@layerPages[#1]#2#3{%
\filename@parse{#2}%
\IfFileExists{\filename@base.pdf}%
{\xdef\PPDfirstdoc{\filename@base.pdf}}{\global\Filesfalse}
\filename@parse{#3}%
\IfFileExists{\filename@base.pdf}%
{\xdef\PPDseconddoc{\filename@base.pdf}}{\global\Filesfalse}%
\ifFiles
\findPages{\PPDfirstdoc} \edef\PPDfirstlastpage{\lastpage}%
\findPages{\PPDseconddoc} \edef\PPDsecondlastpage{\lastpage}%
\ifnum\PPDfirstlastpage<\PPDsecondlastpage
\xdef\pdflastpage{\PPDfirstlastpage}\else%
\ifnum\PPDsecondlastpage<\PPDfirstlastpage
\xdef\pdflastpage{\PPDsecondlastpage}\else
\ifnum\PPDfirstlastpage=\PPDsecondlastpage
\xdef\pdflastpage{\PPDfirstlastpage}\fi\fi\fi
\buildPageList{#1}%
%
\@for\pdfpage:=\pdf@pagelist\do{{%
{\placepages}}}%
\else
\PackageError{pdfpagediff}{Not all PDF docs are available, exiting ...}{}
\expandafter\enddocument\fi
}
\long\def\placepages{%
\vbox to\z@{\pdfliteral{\PPDone\openlayer}%
\includegraphics[page=\pdfpage]{\PPDfirstdoc}%
\pdfliteral{\closelayer}\vspace{-\textheight}\vfill}%
\par\vskip\vlength
\vbox to\z@{\pdfliteral{\PPDtwo\openlayer}%
\ifodd\thecpages \hspace*{\hoddlength}\else
\hspace*{\hevenlength}\fi
\includegraphics[page=\pdfpage]{\PPDseconddoc}%
\pdfliteral{\closelayer}\vspace{-\textheight}\vfill}%
\clearpage
}
%%
%% For River Valley to adjust horizontal or vertical shifts
%% between documents. This happens while making CRC's
%% when the first version starts from odd page while
%% second version might start from even page since
%% \openright is not followed by all journals.
%%
\def\definejnldata{\@ifstar{\starjnldata}{\normaljnldata}}
\def\normaljnldata#1#2#3#4{\@namedef{#1normal}{\vlength=#2
\hoddlength=#3 \hevenlength=#4}}
\def\starjnldata#1#2#3#4{\@namedef{#1even}{\vlength=#2
\hoddlength=#3 \hevenlength=#4}}
%
% \definedata{<jid>}{<vlength>}{<hodd>}{<heven>}
%
\definejnldata{aml}{-12pt}{0pt}{0pt}
\definejnldata*{aml}{-7pt}{-4pt}{4pt}
\def\nameUse#1{\@nameuse{#1}%
\typeout{[vlength = \the\vlength]}%
\typeout{[hoddlength = \the\hoddlength]}%
\typeout{[hevenlength = \the\hevenlength]}%
}
%%
%% An example of usage will be:
%% \nameUse{amlnormal} or \nameUse{amleven}
%%
\endinput
%%
%% End of file, 'pdfpagediff.sty'
%%