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\begingroup
\def\@tempa{adjcalc}
\expandafter
\endgroup
\ifx\@tempa\@currname
\ProvidesPackage{adjcalc}[2011/08/07 v1.0 Provides advanced setlength with multiple back-ends (calc, etex, pgfmath)]
\RequirePackage{xkeyval}
\fi
\AtEndOfPackage{\adjcalc@atend}
\def\adjcalc@atend{%
\begingroup
\expandafter\ifx\csname eTeXversion\endcsname\relax
\endgroup
\RequirePackage{calc}%
\adjcalc@calc
\def\adjcalc@etex{\PackageError{adjcalc}{e-TeX not available for current compiler!}}%
\else
\endgroup
\adjcalc@etex
\fi
}
\def\adjcalc@pgfmath{\AtEndOfPackage{\RequirePackage{pgf}}\def\adjcalc@atend{\adjcalc@pgfmath}}
\def\adjcalc@etex{\def\adjcalc@atend{\adjcalc@etex}}
\def\adjcalc@calc{\AtEndOfPackage{\RequirePackage{calc}}\def\adjcalc@atend{\adjcalc@calc}}
\def\adjcalc@overwrite{\AtEndOfPackage{\adjcalc@overwrite}}
\DeclareOptionX<adjbox>{pgfmath}{\adjcalc@pgfmath}
\DeclareOptionX<adjbox>{etex}{\adjcalc@etex}
\DeclareOptionX<adjbox>{calc}{\adjcalc@calc}
\DeclareOptionX<adjbox>{none}{\let\adjcalc@atend\relax\def\adjsetlength{\setlength}\let\adjcalc@overwrite\relax}
\DeclareOptionX<adjbox>{overwrite}{\adjcalc@overwrite}
\ProcessOptionsX*<adjbox>
\disable@keys{adjbox}{none}
\def\adjcalc@etex{%
\protected\def\adjsetlength##1##2{%
##1=\glueexpr(##2)\relax
}%
\protected\def\adjaddtolength##1##2{%
\advance##1 by \glueexpr(##2)\relax
}%
\protected\def\adjsetcounter##1##2{%
\@ifundefined{c@##1}%
{\@nocounterr{##1}}%
{\global\csname c@##1\endcsname\numexpr(##2)\relax}%
}%
\protected\def\adjaddtocounter##1##2{%
\@ifundefined{c@##1}%
{\@nocounterr{##1}}%
{\global\advance\csname c@##1\endcsname\numexpr(##2)\relax}%
}%
\def\adjbox@default##1##2{%
\@defaultunits##1=\glueexpr##2 \adjbox@defaultunit\relax\@nnil
}%
}
\def\adjcalc@calc{%
\DeclareRobustCommand\adjsetlength{\calc@assign@skip}%
\DeclareRobustCommand\adjaddtolength[1]{\calc@assign@skip{\advance ##1}}%
\DeclareRobustCommand\adjsetcounter[2]{\@ifundefined{c@##1}{\@nocounterr{##1}}{\calc@assign@count{\global\csname c@##1\endcsname}{##2}}}%
\DeclareRobustCommand\adjaddtocounter[2]{\@ifundefined{c@##1}{\@nocounterr{##1}}{\calc@assign@count{\global\advance\csname c@##1\endcsname}{##2}}}%
\def\adjbox@default##1##2{%
\begingroup
\message{^^J\detokenize{##2}^^J}%
\def\calc@post@scan####1!{%
\def\@tempa{####1}%
\ifx\@tempa\@empty
\endgroup% to end calc processing
% is number only
\global\@adjbox@needsdefaulttrue
\else
\endgroup% to end calc processing
% full expression
\global\@adjbox@needsdefaultfalse
\fi
}%
\calc@assign@skip{##1}{##2 \adjbox@defaultunit}%
\endgroup
\if@adjbox@needsdefault
##1=##2 \adjbox@defaultunit\relax
\else
\calc@assign@skip{##1}{##2}%
\fi
}%
\def\adjbox@checkdefault##1\@nnil##2##3{%
\ifx\relax##1\relax\else
\calc@assign@skip{##2}{##3}%
\fi
}%
}
\newif\if@adjbox@needsdefault
\def\adjcalc@pgfmath{%
\DeclareRobustCommand\adjsetlength{\pgfmathsetlength}%
\DeclareRobustCommand\adjaddtolength{\pgfmathaddtolength}%
\DeclareRobustCommand\adjsetcounter{\pgfmathsetcounter}%
\DeclareRobustCommand\adjaddtocounter{\pgfmathaddtocounter}%
\def\adjbox@default##1##2{%
\edef\pgfmathresultunitscale{1\adjbox@defaultunit}%
\let\pgfmathpostparse\pgfmathscaleresult
\pgfmathparse{##2}%
##1=\pgfmathresult pt\relax
}%
}
\def\adjcalc@overwrite{%
\let\setlength\adjsetlength
\let\addtolength\adjaddtolength
\let\setcounter\adjsetcounter
\let\addtocounter\adjaddtocounter
}
\endinput
%%
%% End of file `adjcalc.sty'.
|
