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\def \filedate {2015/11/05}%
\def \fileversion {v1.4.0}%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{xifthen}%
[\filedate \space \fileversion \space Extended ifthen features]
% v1.4 Removed the etex package for compatibility reasons
\RequirePackage{calc}
\RequirePackage{ifthen}
\RequirePackage{ifmtarg}
% First of all, \TE@repl (ifthen) needs to be patched. (v1.2)
% (viz. \newtest{\superlogique}[1]{\(\NOT#1\AND\boolean{true}\)})
% Pointed out by MPG and Pierre Albar\`ede [19 Mar 2009]
\def \TE@repl #1#2{%
\long \def \@tempc ##1#1##2{%
\def \@tempb{\@tempc}%
\begingroup % Thanks MPG
\toks@ {##2}%
\edef \@tempa {\the \toks@}% <- UF v1.3
\expandafter \endgroup
\ifx \@tempa \@tempb
\toks@ \expandafter {\the \toks@ ##1}%
\expandafter \@gobble
\else
\toks@ \expandafter {\the \toks@ ##1#2}%
\expandafter \@tempc
\fi
##2%
}%
\toks@ \expandafter {\expandafter}%
\expandafter \@tempc \the \toks@ #1\@tempc
}
% \cnttest {<counter expression>} {<relation>} {<counter expression>}
%
\newcommand*{\TE@cnttest}[4]{%
\TE@throw
\noexpand \calc@assign@count{\@tempcnta}{\unexpanded{#1}}%
\noexpand \calc@assign@count{\@tempcntb}{\unexpanded{#3}}%
\noexpand \if \noexpand \TE@cnttest@ {#2}%
#4%
}
\newcommand*{\TE@cnttest@}[1]{%
\ifcsname TE@cnttest@@#1\endcsname
\csname TE@cnttest@@#1\expandafter\expandafter\expandafter \endcsname
\expandafter \@gobble
\else
\expandafter \@firstofone
\fi
{FF\PackageError{xifthen}{Not a valid comparison operator "#1"}%
{Valid comparisons are <, =, >, <=, and =>.}}%
}
\@namedef{TE@cnttest@@<}{\ifnum \@tempcnta<\@tempcntb AA\else AB\fi}
\@namedef{TE@cnttest@@>}{\ifnum \@tempcnta>\@tempcntb AA\else AB\fi}
\@namedef{TE@cnttest@@=}{\ifnum \@tempcnta=\@tempcntb AA\else AB\fi}
\@namedef{TE@cnttest@@<=}{%
\ifnum \@tempcnta<\@tempcntb AA\else
\ifnum \@tempcnta=\@tempcntb AA\else AB\fi
\fi
}
\@namedef{TE@cnttest@@>=}{%
\ifnum \@tempcnta>\@tempcntb AA\else
\ifnum \@tempcnta=\@tempcntb AA\else AB\fi
\fi
}
% \dimtest {<dimension expression>} {<relation>} {<dimension expression>}
%
\newcommand*{\TE@dimtest}[4]{%
\TE@throw
\noexpand \calc@assign@skip{\@tempskipa}{\unexpanded{#1}}%
\noexpand \calc@assign@skip{\@tempskipb}{\unexpanded{#3}}%
\noexpand \if \noexpand \TE@dimtest@ {#2}%
#4%
}
\newcommand*{\TE@dimtest@}[1]{%
\ifcsname TE@dimtest@@#1\endcsname
\csname TE@dimtest@@#1\expandafter\expandafter\expandafter \endcsname
\expandafter \@gobble
\else
\expandafter \@firstofone
\fi
{FF\PackageError{xifthen}{Not a valid comparison operator "#1"}%
{Valid comparisons are <, =, >, <=, and =>.}}%
}
\@namedef{TE@dimtest@@<}{\ifdim \@tempskipa<\@tempskipb AA\else AB\fi}
\@namedef{TE@dimtest@@>}{\ifdim \@tempskipa>\@tempskipb AA\else AB\fi}
\@namedef{TE@dimtest@@=}{\ifdim \@tempskipa=\@tempskipb AA\else AB\fi}
\@namedef{TE@dimtest@@<=}{%
\ifdim \@tempskipa<\@tempskipb AA\else
\ifdim \@tempskipa=\@tempskipb AA\else AB\fi
\fi
}
\@namedef{TE@dimtest@@>=}{%
\ifdim \@tempskipa>\@tempskipb AA\else
\ifdim \@tempskipa=\@tempskipb AA\else AB\fi
\fi
}
% \isnamedefined {<command name>}
%
\newcommand*{\TE@isnamedefined}[2]{%
\TE@throw
\noexpand \ifcsname #1\endcsname
#2%
}
% \isempty {<content>}
%
\newcommand*{\TE@isempty}[2]{%
\TE@throw
\noexpand \if FF\noexpand \@nameuse{fi}%
\noexpand \@ifmtarg{\unexpanded{#1}}{%
\noexpand \@nameuse{iftrue}%
}{%
\noexpand \@nameuse{iffalse}%
}%
#2%
}
% \isequivalentto {<command>} {<command>}
%
\newcommand*{\TE@isequivalentto}[3]{%
\TE@throw
\noexpand \ifx \noexpand #1\noexpand#2%
#3%
}
% \isin {<substring>} {<string>}
%
\newcommand*{\TE@isin}[3]{%
\TE@throw
\unexpanded {\in@{#1}{#2}}%
\noexpand \ifin@
#3%
}
% \endswith {<string>} {<substring>}
%
\newcommand*{\TE@endswith}[3]{%
\TE@throw
\unexpanded {\in@{#2\@nil}{#1\@nil}}%
\noexpand \ifin@
#3%
}
% \newtest <command> [<number>] {<definition>}
%
\newcommand*{\newtest}[1]{%
\@ifnextchar[{%
\@newtest{#1}%
}{%
\@newtest{#1}[0]%
}%
}%
\newcommand*{\@newtest}{}
\def \@newtest #1[#2]#3{%
\toks@ = {\(#3\)}%
\TE@repl \or \TE@or
\TE@repl \and \TE@and
\TE@repl \not \TE@neg
\TE@repl \OR \TE@or
\TE@repl \AND \TE@and
\TE@repl \NOT \TE@neg
\edef \@tempa {%
\unexpanded{\newcommand*{#1}[{#2}]}{\the \toks@}%
}%
\@tempa
}%
\newcommand*{\TE@hook}{%
\let \isequivalentto = \TE@isequivalentto
\let \terminateswith = \TE@endswith % For compability reasons (deprecated)
\let \endswith = \TE@endswith
\let \isnamedefined = \TE@isnamedefined
\let \isempty = \TE@isempty
\let \cnttest = \TE@cnttest
\let \dimtest = \TE@dimtest
\let \isin = \TE@isin
}
\renewcommand{\ifthenelse}[1]{%
\toks@{#1}%
\TE@repl \or \TE@or
\TE@repl \and \TE@and
\TE@repl \not \TE@neg
\TE@repl \OR \TE@or
\TE@repl \AND \TE@and
\TE@repl \NOT \TE@neg
\begingroup
\let \protect = \@unexpandable@protect
\def \@setref ##1##2##3{\ifx ##1\relax \z@ \else \expandafter ##2##1\fi}%
\def \value ##1{\the \csname c@##1\endcsname}%
\let \equal = \TE@equal
\let \( = \TE@lparen
\let \) = \TE@rparen
\let \isodd = \TE@odd
\let \lengthtest = \TE@length
\let \isundefined = \TE@undef
\TE@hook
\begingroup
\let \@tempa = \relax
\let \@tempb = \relax
\xdef \@gtempa {\expandafter \TE@eval \the \toks@ \TE@endeval}%
\endgroup
\@gtempa
\expandafter \endgroup
\ifTE@val
\expandafter\@firstoftwo
\else
\expandafter\@secondoftwo
\fi
}
\endinput
|
