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%%
%% This is file `epspdfconversion.sty',
%%
%%
%% It is based on epstopdf.sty by Heiko Oberdiek and an attempt to use Siep
%% Kroonenberg tools Epspdf  (http://tex.aanhet.net/epspdf/)
%% "on the fly" in LaTeX
%%
%% Please send suggestions to daniel.becker@uni-rostock.de
%% version history:
%%
%% ToDo: 
%%
%% 0.3: Heiko Oberdiek substantially improved the code. 
%%      The kvoptions-package is now used for the implemention of options. 
%%      See the documentation %%      for effects and additional features. 
%% 0.2: the package is now simply based on epstopdf. This package essentially
%%      defines \@namedef{Gin@rule@.eps}#1{{pdf}{.pdf}{`\conversioncommand #1}}
%%      differently than epstopdf. The code has been cleaned up. Improvements of
%%      documentation and additional warning about pdfminorversion....
%% 0.1: first try
%%



\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{epspdfconversion}%
  [2007/10/02 v0.3 Conversion eps->pdf with epspdf-tools on the fly]


%% this loads the epstopdf and the kvoptions packages.
\RequirePackage{epstopdf}
\RequirePackage{kvoptions}[2006/08/22]


\SetupKeyvalOptions{
  family=EPC,
  prefix=EPC@
}

%% this is the basic command necessary for the conversion with epspdf 
\DeclareStringOption[epspdf]{cmd}

% Gray
% \EPC@gray stores the whole option
\DeclareVoidOption{gray}{%this is for the \usepackage[gray]{...
  \def\EPC@optgray{--gray }%this is the effect in the command line
}
\DeclareVoidOption{GRAY}{%
  \def\EPC@optgray{--GRAY }%
}
\DeclareVoidOption{grey}{%
  \def\EPC@optgray{--grey }%
}
\DeclareVoidOption{GREY}{%
  \def\EPC@optgray{--GREY }%
}

% Target
% \EPC@target stores the target only
% target         ==> --target=default
% target=printer ==> --target=printer
% screen         ==> --target=screen
\DeclareStringOption{target}[default]
\DeclareVoidOption{default}{%
  \def\EPC@target{default}%
}
\DeclareVoidOption{printer}{%
  \def\EPC@target{printer}%
}
\DeclareVoidOption{prepress}{%
  \def\EPC@target{prepress}%
}
\DeclareVoidOption{screen}{%
  \def\EPC@target{screen}%
}
\DeclareVoidOption{ebook}{%
  \def\EPC@target{ebook}%
}

% Version
% \EPC@pdfversion stores the version only
% pdfversion=1.2 ==> --version=1.2
% the warning with pdfminorversion does not work?

\define@key{EPC}{pdfversion}[default]{%
  \@ifundefined{EPC@pdfversion@#1}{% 
    \PackageError{epspdfconversion}{%
      Ignoring unknown value for `pdfversion'. Known values are: 1.2,1.3, 1.4, default%
    }\@ehc
  }{%
    \def\EPC@pdfversion{#1}%
    \begingroup
      \let\MinorVersion\relax
      \@ifundefined{pdfminorversion}{%
        \@ifundefined{pdfoptionpdfminorversion}{}{%
          \def\MinorVersion{\pdfoptionpdfminorversion}%
        }%
      }{%
        \def\MinorVersion{\pdfminorversion}%
      }%
      \ifx\MinorVersion\relax
      \else
        \ifnum\@nameuse{EPC@pdfversion@#1}>\MinorVersion
          \PackageWarning{epspdfconversion}{%
            You have chosen pdfversion=#1,\MessageBreak  
            but you generate PDF-1.\number\MinorVersion.%
            \MessageBreak
            This can be changed by\MessageBreak
            \expandafter\string\MinorVersion=%
            \@nameuse{EPC@pdfversion@#1}%
            \MessageBreak
            (at the very beginning of your .tex file).\MessageBreak Or try `pdfversion=1.\number\MinorVersion'%
          }%
        \fi
      \fi
    \endgroup
  }%
}

\@namedef{EPC@pdfversion@1.2}{2}
\@namedef{EPC@pdfversion@1.3}{3}
\@namedef{EPC@pdfversion@1.4}{4}
\@namedef{EPC@pdfversion@default}{0}% disable version check

% bbox       ==> --bbox
% bbox=true  ==> --bbox
% bbox=false ==> option disabled
\DeclareBoolOption{bbox}

\DeclareVoidOption{pdftops}{%
  \def\EPC@optpdftops{-U }%
}
\DeclareVoidOption{nopdftops}{%
  \def\EPC@optpdftops{-I }%
}

\DeclareStringOption{custom}
\DeclareStringOption{psoptions}
\DeclareStringOption{pagenumber}

\DeclareVoidOption{simple}{%
  % disable other options
  \let\EPC@optgray\@empty
  \let\EPC@optpdftops\@empty
  \let\EPC@target\@empty
  \let\EPC@pdfversion\@empty
  \let\EPC@custom\@empty
  \let\EPC@psoptions\@empty
  \let\EPC@pagenumber\@empty
  \EPC@bboxfalse
}

% default setting: all options cleared
\EPC@simple

% Options help works immediately, if shell escape feature is enabled.
\DeclareVoidOption{help}{%
  \immediate\write18{\EPC@cmd\space--help}%
}

\def\EPC@addopt#1{%
  \expandafter\ifx\csname EPC@#1\endcsname\@empty
  \else
    --#1=\@nameuse{EPC@#1} %
  \fi
}

%% this is the setup of the command line....
\newcommand*{\epspdfconversioncmdline}[1]{%
  \EPC@cmd\space
  \EPC@optpdftops
  \EPC@addopt{target}%
  \ifx\EPC@pdfversion\@empty
  \else
    --version=\EPC@pdfversion\space
  \fi
  \EPC@addopt{custom}%
  \EPC@addopt{psoptions}%
  \EPC@addopt{pagenumber}%
  \ifEPC@bbox
    --bbox %
  \fi
  \EPC@optgray
  #1%
}

%% this shows what is going on in the log
\def\EPC@printlog{%
  \PackageInfo{epspdfconversion}{%
    \epspdfconversioncmdline{<file>}\MessageBreak
  }%
}

%% this allows to change the options on the fly
% Use example: \epspdfconversionsetup{target=prepress,bbox}
\newcommand*{\epspdfconversionsetup}[1]{%
  \setkeys{EPC}{#1}%
  \EPC@printlog
}

\ProcessKeyvalOptions*
\EPC@printlog

%%% this changes the definition provided by epstopdf:
\@namedef{Gin@rule@.eps}#1{{pdf}{.pdf}{`\epspdfconversioncmdline{#1}}}
\endinput