hrefout.sty

\ProvidesPackage{hrefout}[2001/05/23 Set whether output is hyperref-ed (JH)]
% hrefout.sty
%  LaTeX file to help set, perhaps from the command line, whether
% hyperref-ed output is desired.
%
% BACKGROUND
%   I want, from the same source file, sometimes to have hyperref-ed
% output and sometimes not.
%    > latex ``\def\hrefout{yes}\input myfile''
% This package allows this.
%
% USAGE
%  With this in your source file
%    \documentclass{article}
%    \usepackage{hrefout}
% the package will do this.
%  (1) If the command line is 
%      > latex ``\def\hrefout{yes}\input myfile''
%    then \hrefouttrue is set (and also the macro \hrefout is def-ed
%    to `yes').  If the command line is
%      > latex ``\def\hrefout{no}\input myfile''
%    (or anything except `yes') then \hrefoutfalse is set (and \hrefout
%    is def-ed to `no').
%  (3) If the command line is 
%      > latex myfile
%    then the package will try to grab the default answer from 
%    hrefout.cfg.  If there is no such file then the default is to
%    set \hrefoutfalse.
% Also possible is to get a per-document default.  Call the package as
%    \documentclass{article}
%    \usepackage[yes]{hrefout}
% in which case, absent (1) above we have
%  (2) the package will set \hrefouttrue.
%
% SEE ALSO
%  dvidrv.sty   Allows you to set the dvi driver from the command line.
%
% HISTORY
% 2001-May-23 Jim Hefferon jim@joshua.smcvt.edu Written.
%               Donald Arseneau on ctt got me past an ExecuteOptions*
%               point that I didn't understand.  (Thanks!)
%

% The INITIAL CODE part
\newif\ifhrefout %
\def\hrefout@yes{yes}%
\def\hrefout@settrue{\hrefouttrue\def\hrefout{yes}}%
\def\hrefout@setfalse{\hrefoutfalse\def\hrefout{no}}%

\@ifundefined{hrefout}% Has it been set already?
  {}%
  {\ifx\hrefout@yes\hrefout % yes, it has
     \hrefout@settrue %
   \else
     \hrefout@setfalse %
   \fi
  }


% The DECLARATION OF OPTIONS part
\DeclareOption*{\@ifundefined{hrefout}%
	         {\ifx\hrefout@yes\CurrentOption %
		    \hrefout@settrue %
                   \else
                     \hrefout@setfalse %
                   \fi
                 }{\ifhrefout %
		    %
                   \else
                     \hrefout@setfalse % define to `no', no matter what
                   \fi
                 }}

% The EXECUTION OF OPTIONS part
\ProcessOptions % grab any options off the options list for (2) above
\@ifundefined{hrefout}%
  {\InputIfFileExists{hrefout.cfg}{}{\hrefout@setfalse}% default for (3)
  }{\ifx\hrefout@yes\hrefout %
      \hrefout@settrue %
     \else
       \hrefout@setfalse %
     \fi
   }

% The PACKAGE LOADING part

% The MAIN CODE part
\typeout{   href output is turned on?  \hrefout.}

% ========test file==========
%\documentclass{article}
%\usepackage[yes]{hrefout}
%
%\begin{document}
%Hello. 
%
%\ifhrefout
%  Yes, the test works.
%\else
%  No, the test doesn't work
%\fi
%\end{document}