% ------------------------------------------------------------------------
% File: srcltx.sty
%       ==========
%
% This package was written by the author of WinEdt Shell to implement
% a source file tracking and DVI "SRC" specials for LaTeX.
%
% This package comes with no guarantees and no reserved rights.
% You can use or modify this file at your own risk.
% ************************************************************************
% NOTE: TeX commands are case sensitive. You have to use uppercase
% \Input to take advantage of this package
%
% This file should be placed in a directory where your LaTeX is
% looking for inputs.
%
% If you are writing a book with WinEdt and LaTeX simply
% include this file and use \include{mychapter} command...
% This way all the necessary specials for DVI Search and
% Inverse Search are inserted in your DVI File.
%
% WinEdt will be able to track Errors from your LOG file.
%
% * NOTE: Some TeX implementations add the file type to the "\jobname".
% In that case the definition of the "\MainFile" should be modified to:
%
%     \def\MainFile{\jobname} instead of \def\MainFile{\jobname.tex}.
%
%
% Your LaTeX thesis document may look something like this:
%
%\documentclass[12pt]{report}
%\usepackage[centertags]{amstex}
%\usepackage{thesis,newlfont,amsthm}
%\usepackage[active]{srcltx}
%%No src specials are written when loading the package by
%%\usepackage[inactive]{srcltx}
%
% .... Preamble ....
%
%\begin{document}
%
% .... Title, Author etc. ....
%
%\WinEdt{?0000} % Do not process any Errors (Overful/Underful Boxes)
%\beforepreface
%\WinEdt{?1111} % Process All Types of Errors from here on
%\include{ABS}
%\include{ACK}
%\afterpreface
%\include{chapter0}
%\include{chapter1}
%\include{chapter2}
%\include{chapter3}
%\bibliographystyle{amsplain}
%\bibliography{xbib}
%\end{document}
%
% To remove SRC Specials from the dvi file compile the source
% after inserting \SRCOKfalse immediately after
% the \usepackage{srcltx} directive...
%
% This package supports nested \Input commands...
% File extension should be specified in \Input!
% ------------------------------------------------------------------------
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{srcltx}[1998/03/09 v0.1 forward/backward DVI searching]
\newif\ifSRCOK \SRCOKtrue
\DeclareOption{active}{\SRCOKtrue}
\DeclareOption{inactive}{\SRCOKfalse}
\ExecuteOptions{active}
\ProcessOptions
% ------------------------------------------------------------------------
\newcount\PAGETOP
\newcount\LASTLINE
\global\PAGETOP=1
\global\LASTLINE=-1
\gdef\MainFile{\jobname.tex}% ".tex" needed for MiKTeX
\gdef\CurrentInput{\MainFile}
\newcount\INPSP
\global\INPSP=0
\def\EJECT{\SRC\eject}
\def\WinEdt#1{\typeout{:#1}} % WinEdt LOG MODE and INPUT
% ------------------------------------------------------------------------
%If your filenames start with numeric characters and you are using YAP
%use the alternative definition marked as Yap Only and remove DVIWIN
%and YAP. DVIWIN does not allow spaces after the line number and there
%is no way out if your file is for example "13_text.tex"...
\def\SRC{\ifSRCOK%
  \ifnum\inputlineno>\LASTLINE%
    \ifnum\LASTLINE<0%
      \global\PAGETOP=\inputlineno%
    \fi%
    \global\LASTLINE=\inputlineno%
    \ifnum\INPSP=0%
      \ifnum\inputlineno>\PAGETOP%
%        \immediate\typeout{src:\the\inputlineno\CurrentInput}%debugging
        \special{src:\the\inputlineno\CurrentInput}% DVIWIN and YAP
%        \special{src:\the\inputlineno\space\CurrentInput}% YAP Only
      \fi%
    \else%
%      \immediate\typeout{src:\the\inputlineno\CurrentInput}%debugging
      \special{src:\the\inputlineno\CurrentInput}% DVIWIN and YAP
%      \special{src:\the\inputlineno\space\CurrentInput}% Yap Only
    \fi%
  \fi%
\fi}
% ------------------------------------------------------------------------
\def\PUSH#1{%
%\immediate\typeout{PUSH:\CurrentInput}%debugging
\SRC%
\ifnum\INPSP=0 \global\let\INPSTACKA=\CurrentInput \else%
\ifnum\INPSP=1 \global\let\INPSTACKB=\CurrentInput \else%
\ifnum\INPSP=2 \global\let\INPSTACKC=\CurrentInput \else%
\ifnum\INPSP=3 \global\let\INPSTACKD=\CurrentInput \else%
\ifnum\INPSP=4 \global\let\INPSTACKE=\CurrentInput \else%
\ifnum\INPSP=5 \global\let\INPSTACKF=\CurrentInput \else%
               \global\let\INPSTACKX=\CurrentInput \fi\fi\fi\fi\fi\fi%
\gdef\CurrentInput{#1}%
\WinEdt{<+ \CurrentInput}%
%\immediate\typeout{PUSHED:\CurrentInput}%debugging
\global\LASTLINE=0%
\ifSRCOK\special{src:1\CurrentInput}\fi%
\global\advance\INPSP by 1}
%
\def\POP{%
%\immediate\typeout{POP:\CurrentInput}%debugging
\ifnum\INPSP>0 \global\advance\INPSP by -1  \fi%
\ifnum\INPSP=0 \global\let\CurrentInput=\INPSTACKA \else%
\ifnum\INPSP=1 \global\let\CurrentInput=\INPSTACKB \else%
\ifnum\INPSP=2 \global\let\CurrentInput=\INPSTACKC \else%
\ifnum\INPSP=3 \global\let\CurrentInput=\INPSTACKD \else%
\ifnum\INPSP=4 \global\let\CurrentInput=\INPSTACKE \else%
\ifnum\INPSP=5 \global\let\CurrentInput=\INPSTACKF \else%
               \global\let\CurrentInput=\INPSTACKX \fi\fi\fi\fi\fi\fi%
\WinEdt{<-}%
\global\LASTLINE=\inputlineno%
\global\advance\LASTLINE by -1%
%\immediate\typeout{POPPED:\CurrentInput}%debugging
\SRC}
% ------------------------------------------------------------------------
% Dummy Input: can be used as \INPUT{<file>.bbl} to collect \bibitems
\def\INPUT#1{\relax}
% ------------------------------------------------------------------------
% Redefine the original \include command
\let\OldINCLUDE=\include
\def\include#1{%Always ".tex" file type
\EJECT%
\PUSH{#1.tex}%
\OldINCLUDE{#1}%
\POP}
% ------------------------------------------------------------------------
\def\Input#1{%Specify File Extension!
\PUSH{#1}%
\input #1%
\POP}
% ------------------------------------------------------------------------
\def\@SRC{\ifnum\lastpenalty=0\ifdim\lastskip=0.0pt\SRC\fi\fi}
% ? Remove some of the following lines if you experience any troubles
%
\everymath={\SRC} %Should be OK
%
% Displayed Math: \everydisplay does not work with certain environments
\let\zz@lsbrace=\[
\def\[{\zz@lsbrace\SRC}
\let\zz@rsbrace=\]
\def\]{\SRC\zz@rsbrace}
%
% Possibly problematic definitions: Remove them if there are problems
\let\z@indent=\indent
\def\indent{\SRC\z@indent}
\let\z@noindent=\noindent
\def\noindent{\SRC\z@noindent}
\let\z@leavevmode=\leavevmode
\def\leavevmode{\SRC\z@leavevmode}
%
% Possibly problematic definitions: Remove them if there are problems
\let\z@bsphack=\@bsphack
\def\@bsphack{\@SRC\z@bsphack}
\let\z@esphack=\@esphack
\def\@esphack{\@SRC\z@esphack}
\let\z@Esphack=\@Esphack
\def\@Esphack{\@SRC\z@Esphack}
\let\z@xaddvskip=\@xaddvskip
\def\@xaddvskip{\@SRC\z@xaddvskip}
%
% Possibly problematic definitions: Remove them if there are problems
\let\z@par=\@par
\def\@par{\@SRC\z@par}
\let\z@setpar=\@setpar
\def\@setpar{\@SRC\z@setpar}
\let\z@restorepar=\@restorepar
\def\@restorepar{\@SRC\z@restorepar}
\let\z@doendpe=\@doendpe
\def\@doendpe{\@SRC\z@doendpe}
\let\z@endparenv=\@endparenv
\def\@endparenv{\@SRC\z@endparenv}
%
% Possibly problematic definitions: Remove them if there are problems
\let\z@list=\list
\def\list{\@SRC\z@list}
\let\z@trivlist=\trivlist
\def\trivlist{\@SRC\z@trivlist}
\let\z@item=\item
\def\item{\@SRC\z@item}
%
% Labels: Insert SRC specials when \ref or \cite is encountered...
\let\z@cite=\cite
\def\cite{\SRC\z@cite}
\let\z@ref=\ref
\def\ref{\SRC\z@ref}
%
% Skip Commands are defined to restore \everypar:
\def\relaxskip{\ifSRCOK\SRC\everypar={\SRC}\fi\relax\SRC}
\let\zzz@smallskip=\smallskip
\def\smallskip{\ifSRCOK\SRC\everypar={\SRC}\fi\zzz@smallskip\SRC}
\let\zzz@medskip=\medskip
\def\medskip{\ifSRCOK\SRC\everypar={\SRC}\fi\zzz@medskip\SRC}
\let\zzz@bigskip=\bigskip
\def\bigskip{\ifSRCOK\SRC\everypar={\SRC}\fi\zzz@bigskip\SRC}
\let\zzz@goodbreak=\goodbreak
\def\goodbreak{\ifSRCOK\SRC\everypar={\SRC}\fi\zzz@goodbreak\SRC}
%
% Sectioning Commands are defined to restore \everypar (tricky):
\let\zzz@document=\document
\def\document{\zzz@document\everypar={\SRC}}
%
%The following Commands are known to cause problems with fancyhdr.sty
%and are therefore disabled by default...
%
%\let\zzz@chapter=\chapter
%\def\chapter{\everypar=\expandafter{\the\everypar\SRC\everypar{\SRC}}\zzz@chapter}
%\let\zzz@section=\section
%\def\section{\everypar=\expandafter{\the\everypar\SRC\everypar{\SRC}}\zzz@section}
%\let\zzz@subsection=\subsection
%\def\subsection{\everypar=\expandafter{\the\everypar\SRC\everypar{\SRC}}\zzz@subsection}
%
\let\zzz@bibliography=\bibliography
\def\bibliography#1{\PUSH{\jobname.bbl}\zzz@bibliography{#1}\POP}
% ------------------------------------------------------------------------