% \CheckSum{275}
% \iffalse
% ======================================================================
% scrtime.dtx 
% Copyright (c) Markus Kohm, 1995-2008
%
% This file is part of the LaTeX2e KOMA-Script bundle.
%
% This work may be distributed and/or modified under the conditions of
% the LaTeX Project Public License, version 1.3b of the license.
% The latest version of this license is in
%   http://www.latex-project.org/lppl.txt
% and version 1.3b or later is part of all distributions of LaTeX 
% version 2005/12/01 or later and of this work.
%
% This work has the LPPL maintenance status "author-maintained".
%
% The Current Maintainer and author of this work is Markus Kohm.
%
% This work consists of all files listed in manifest.txt.
% ----------------------------------------------------------------------
% scrtime.dtx
% Copyright (c) Markus Kohm, 1995-2008
%
% Dieses Werk darf nach den Bedingungen der LaTeX Project Public Lizenz,
% Version 1.3b, verteilt und/oder veraendert werden.
% Die neuste Version dieser Lizenz ist
%   http://www.latex-project.org/lppl.txt
% und Version 1.3b ist Teil aller Verteilungen von LaTeX
% Version 2005/12/01 oder spaeter und dieses Werks.
%
% Dieses Werk hat den LPPL-Verwaltungs-Status "author-maintained"
% (allein durch den Autor verwaltet).
%
% Der Aktuelle Verwalter und Autor dieses Werkes ist Markus Kohm.
% 
% Dieses Werk besteht aus den in manifest.txt aufgefuehrten Dateien.
% ======================================================================
% \fi
%
% \CharacterTable
%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
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% \iffalse
%%% From File: scrtime.dtx
%<*dtx>
\ProvidesFile{scrtime.dtx}
%</dtx>
%<scrtime|scrdate>\NeedsTeXFormat{LaTeX2e}[1995/12/01]
%<driver>\ProvidesFile{scrtime.drv}
%<scrtime>\ProvidesPackage{scrtime}
%<scrdate>\ProvidesPackage{scrdate}
                [2006/03/30 v1.1o LaTeX2e KOMA-Script
%<scrtime|scrdate>                 package]
%<*driver>
                 driver]
\documentclass{scrdoc}
\usepackage[german,english]{babel}
\usepackage[latin1]{inputenc}
\CodelineIndex
\RecordChanges
\GetFileInfo{scrtime.dtx}
\title{The \textsf{KOMA}-timedate-bundle\thanks{This file has
    version number \fileversion, last revised \filedate.}}
\author{Markus Kohm}
\date{\filedate}
\begin{document}
  \maketitle
  \begin{abstract}
    This bundle includes a package \texttt{scrtime} defining some macros to
    handle compilation-time.  It's a very simple implementation similar to
    \texttt{time.sty}. I've tried to use no additional register.

    The second package \texttt{scrdate} defines some macros to handle the name
    of the day!
  \end{abstract}
  \tableofcontents
  \DocInput{scrtime.dtx}
\end{document}
%</driver>
% \fi
%
% \tableofcontents
%
% \section{Introduction}
%
% See the \KOMAScript{} guide for informations abouthow to use the package.
%
% \StopEventually{\PrintIndex\PrintChanges}
%
% \section{Implementation}
%
% \subsection{Time-macros}
%
%    \begin{macrocode}
%<*scrtime>
%    \end{macrocode}
%
% \subsubsection{Options}
% \changes{v1.1b}{1995/02/15}{Options \texttt{12h} and \texttt{24h} added.}
% There are two the two Options |24h| and |12h|. We need a switch to
% distinguish.
%    \begin{macrocode}
\newif\if@Hxii
%    \end{macrocode}
%
% So the Options are simple.
%    \begin{macrocode}
\DeclareOption{12h}{\@Hxiitrue}
\DeclareOption{24h}{\@Hxiifalse}
%    \end{macrocode}
%
% Default is 24h-mode.
%    \begin{macrocode}
\ExecuteOptions{24h}
\ProcessOptions
%    \end{macrocode}
%
% \subsubsection{Macros}
% We use |\@tempcnta| and |\@tempcntb| but we know, that this is not
% a very good idea.
%
%  \begin{macro}{\thistime}
% \changes{v1.1b}{1995/02/15}{{\cmd\thistime*} added.}
% \changes{v1.1b}{1995/02/15}{{\cmd\thistime} works.}
% First we have to decide, is it a star-version ore not.
%    \begin{macrocode}
\def\thistime{%
  \@ifstar
    {\let\@tempif\iffalse\@thistime}
    {\let\@tempif\iftrue\@thistime}}
%    \end{macrocode}
% Know we have to calculate the hours and minutes. |\@tempcnta| are the
% hours and |\@tempcntb| are the minutes.
%    \begin{macrocode}
\newcommand*{\@thistime}[1][:]{%
  \begingroup
    \@tempcnta\time\divide\@tempcnta60\multiply\@tempcnta60
    \@tempcntb\time\advance\@tempcntb-\@tempcnta
    \divide\@tempcnta60
%    \end{macrocode}
% If we use 12h-mode, we have to cut the houres.
% \changes{v1.1d}{1996/01/14}{Space added at \cs{@thistime} between -12
%                             and \cs{fi} (Martin Schroeder).}
%    \begin{macrocode}
    \if@Hxii\ifnum\@tempcnta>12 \advance\@tempcnta-12 \fi\fi
%    \end{macrocode}
% Know we have to compose the value. If the minutes are less than 10
% maybe there has to be an additional 0.
%    \begin{macrocode}
    \the\@tempcnta{#1}\@tempif\ifnum\@tempcntb<10 0\fi\fi\the\@tempcntb%
  \endgroup}
%    \end{macrocode}
%  \end{macro}
%
%  \begin{macro}{\settime}
% \changes{v1.1b}{1995/02/15}{{\cmd\settime} redefines {\cmd\@thistime}}
% \changes{v1.1c}{1995/05/24}{missing macrocode-environment inserted}
% We simply have to set |\thistime|.
%    \begin{macrocode}
\newcommand*{\settime}[1]{\renewcommand*{\@thistime}[1][]{#1}}
%    \end{macrocode}
%  \end{macro}
%
%
% That's it:
%    \begin{macrocode}
%</scrtime>
%    \end{macrocode}
%
%
% \subsection{Date-macros}
%
%    \begin{macrocode}
%<*scrdate>
%    \end{macrocode}
%
% \changes{v1.1a}{1995/02/12}{Changed simply all but the user-interface.}
% To handle them, we need counters. We use the same as in \texttt{scrtime}.
%
%  \begin{macro}{\todaysname}
% This is not so easy. First we have to calculate how many days they are
% from 1st January 1980.
%    \begin{macrocode}
\newcommand\todaysname{%
  \begingroup%
  \@tempcnta=\year
  \@tempcntb=1 % 1. Januar 1980 war ein Dienstag
  \ifnum\@tempcnta<1980 unknown\else%
    \advance\@tempcnta by-1980%
    \@whilenum\@tempcnta>3\do%
    {\advance\@tempcntb by5\advance\@tempcnta by-4}%
    \ifnum\@tempcnta=0%
      \ifnum\month>2\advance \@tempcntb by1\fi%
    \else%
      \advance\@tempcntb by\@tempcnta%
      \advance\@tempcntb by1
    \fi%
    \ifcase\month\or\or\advance\@tempcntb3%  Jan =  28 + 3
                    \or\advance\@tempcntb3% +Feb =  56 + 3
                    \or\advance\@tempcntb6% +Mar =  84 + 6
                    \or\advance\@tempcntb1% +Apr = 119 + 1
                    \or\advance\@tempcntb4% +May = 147 + 4
                    \or\advance\@tempcntb6% +Jun = 175 + 6
                    \or\advance\@tempcntb2% +Jul = 210 + 2
                    \or\advance\@tempcntb5% +Aug = 238 + 5
                    \or%                    +Sep = 273 + 0
                    \or\advance\@tempcntb3% +Oct = 301 + 3
                    \or\advance\@tempcntb5% +Nov = 329 + 5
    \fi%
    \advance\@tempcntb by\day%
    \advance\@tempcntb by-1% die Zaehlung beginnt bei 0
    \@whilenum\@tempcntb>6\do%
    {\advance\@tempcntb by-7}%
%    \end{macrocode}
% Now we can say which day it is.
%    \begin{macrocode}
    \@dayname{\@tempcntb}%
  \fi\endgroup}
%    \end{macrocode}
%  \end{macro}
%
%  \begin{macro}{\nameday}
% We simply have to redefine |\todaysname|
%    \begin{macrocode}
\newcommand\nameday[1]{\renewcommand\todaysname{#1}}
%    \end{macrocode}
%  \end{macro}
%
%  \begin{macro}{\newdaylanguage}
% We write a macro to define the name of the days.
% \changes{v1.1e}{1996/12/07}{Bernd's expandafter-trick to not define
%                             a new language.}
%  \begin{macro}{\scrdate@languagenamewarning}
% But before this, we have to define a once only warning.
%    \begin{macrocode}
\newcommand*\scrdate@languagenamewarning{
  \PackageWarningNoLine{scrdate}
    {\string\languagename\space not
     defined, using \string\language.\MessageBreak
     This may result in use of wrong language!\MessageBreak
     You should use a compatible language
     package\MessageBreak
     (e.g. `Babel', `german', `french', ...)}
  \let\scrdate@languagenamewarning\relax}
%    \end{macrocode}
%  \end{macro}
%    \begin{macrocode}
\newcommand\newdaylanguage[8]{%
%    \end{macrocode}
% First we check, if the language is defined at the format, the user uses.
% If it is not defined, we do not define the name of the days and warn.
%    \begin{macrocode}
  \begingroup\expandafter\expandafter\expandafter\endgroup
  \expandafter\ifx\csname l@#1\endcsname\relax
    \PackageWarningNoLine{scrdate}{Language #1\space not defined.\MessageBreak
                                  \protect\dayname@#1\space skipped!}
%    \end{macrocode}
% \changes{v1.1c}{1995/05/24}{missing \cs{end\{macrocode\}} added.}
% If it is defined, we define the name-selection-macro
% |\dayname@|\emph{language}.
% First we define the new macro |\dayname@|\emph{language}:
%    \begin{macrocode}
  \else
    \@namedef{dayname@#1}##1{%
      \begingroup%
        \@tempcnta ##1%
        \ifcase\@tempcnta%
          #2\or #3\or #4\or #5\or #6\or #7\or #8\fi\endgroup%
    }
%    \end{macrocode}
% Then we define, what to do at |\begin{document}|:
%    \begin{macrocode}
    \AtBeginDocument{
%    \end{macrocode}
% There we first have to test, if |\date|\emph{language} is defined
% (e.g. using |german.sty|). If not, we have to warn once more.
% \changes{v1.1e}{1996/12/07}{Bernd's expandafter-trick to not define
%                             new \cs{date}\emph{language}.}
%    \begin{macrocode}
      \begingroup\expandafter\expandafter\expandafter\endgroup
      \expandafter\ifx\csname date#1\endcsname\relax
        \PackageWarningNoLine{scrdate}
                             {\protect\date#1\space not defined.\MessageBreak
                              \protect\todaysname maybe can't use
                              \protect\dayname@#1!}
%    \end{macrocode}
% But if it is defined, we can use it
%    \begin{macrocode}
      \else
%    \end{macrocode}
% There we first save |\date|\emph{language} as |\D@date|\emph{language}.
% This is a bit tricky, but I think, you'll understand it.
%    \begin{macrocode}
        \expandafter\let\csname D@date#1\expandafter\endcsname
                        \csname date#1\endcsname
%    \end{macrocode}
% Now we redefine |\date|\emph{language}. It first defines |\@dayname| and
% then calls saved macro. If you've understand the definition before, you'll
% understand this tricky one, too.
%    \begin{macrocode}
        \@namedef{date#1}{%
          \expandafter\let\expandafter\@dayname\csname dayname@#1\endcsname
          \@nameuse{D@date#1}}%
%    \end{macrocode}
% Last we have to select this new |\date|\emph{language}.
% \changes{v1.1j}{2000/01/20}{use of \cs{languagename} if defined}
%    \begin{macrocode}
        \@ifundefined{languagename}{
          \scrdate@languagenamewarning
          \ifnum\language=\@nameuse{l@#1}
            \@nameuse{date#1}
          \fi}{
          \@ifundefined{date\languagename}
            {}
            {\@nameuse{date\languagename}}
        }
      \fi
    }
  \fi
}
%    \end{macrocode}
%  \end{macro}
%
%  \begin{macro}{\@dayname}
% This should be named selecting the language. Since I changed the definitions
% |german.sty| and equal may be loaded before or after |scrdate.sty| or not.
%
% First we define the usual languages using |\newdaylanguage|:
%  \begin{macro}{\dayname@german}
%    \begin{macrocode}
\newdaylanguage{german}{Montag}{Dienstag}{Mittwoch}
               {Donnerstag}{Freitag}{Samstag}{Sonntag}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@ngerman}
% \changes{v1.1i}{1999/10/09}{new language ``ngerman''.}
%    \begin{macrocode}
\newdaylanguage{ngerman}{Montag}{Dienstag}{Mittwoch}
               {Donnerstag}{Freitag}{Samstag}{Sonntag}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@english}
% \changes{v1.1g}{1997/06/21}{correct name is ``tuesday''.}
%    \begin{macrocode}
\newdaylanguage{english}{Monday}{Tuesday}{Wednesday}
               {Thursday}{Friday}{Saturday}{Sunday}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@USenglish}
% \changes{v1.1g}{1997/06/21}{correct name is ``tuesday''.}
%    \begin{macrocode}
\newdaylanguage{USenglish}{Monday}{Tuesday}{Wednesday}
               {Thursday}{Friday}{Saturday}{Sunday}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@french}
%    \begin{macrocode}
\newdaylanguage{french}{Lundi}{Mardi}{Mercredi}
               {Jeudi}{Vendredi}{Samedi}{Dimanche}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@italian}
% \changes{v1.1f}{1997/06/06}{New (thanks to Lorenzo M.\ Catucci)}
%    \begin{macrocode}
\newdaylanguage{italian}{Luned\`\i}{Marted\`\i}{Mercoled\`\i}
               {Gioved\`\i}{Venerd\`\i}{Sabato}{Domenica}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@spanish}
% \changes{v1.1h}{1997/07/26}{New (thanks to Ralph J.\ Hangleiter)}
%    \begin{macrocode}
\newdaylanguage{spanish}{Lunes}{Martes}{Mi\'ercoles}
               {Jueves}{Viernes}{S\'abado}{Domingo}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@croatian}
% \changes{v1.1l}{2001/10/05}{New (thanks to Branka Lon\v{c}arevi\'{c})}
%  \begin{macrocode}
\newdaylanguage{croatian}{Ponedjeljak}{Utorak}{Srijeda}
               {\v{C}etvrtak}{Petak}{Subota}{Nedjelja}
%    \end{macrocode}
%  \end{macro}
%  \begin{macro}{\dayname@dutch}
%    \changes{v1.1m}{2002/02/02}{New (thanks to Henk Jongbloets)}
%    \begin{macrocode}
\newdaylanguage{dutch}{Maandag}{Dinsdag}{Woensdag}
               {Donderdag}{Vrijdag}{Zaterdag}{Zondag}
%    \end{macrocode}
%  \end{macro}
%
%  \begin{macro}{\dayname@finish}
%    \changes{v1.1n}{2005/02/07}{New (thanks to Hannu V\"ais\"anen)}
%    \begin{macrocode}
\newdaylanguage{finnish}{maanantai}{tiistai}{keskiviikko}
               {torstai}{perjantai}{lauantai}{sunnuntai}
%    \end{macrocode}
%  \end{macro}
%
% If there are no language-definitions, we simply want the US-english names
% of the days.
% \changes{v1.1g}{1997/06/21}{correct name is ``tuesday''.}
%    \begin{macrocode}
\def\@dayname#1{%
  \begingroup%
    \@tempcnta #1%
    \ifcase\@tempcnta%
      Monday\or Tuesday\or Wednesday\or Thursday\or
      Friday\or Saturday\or Sunday\fi\endgroup%
}
%    \end{macrocode}
%  \end{macro}
%
% Last but not least file \texttt{scrdate.cfg} has to be included,
% if it exists.
%    \begin{macrocode}
\InputIfFileExists{scrdate.cfg}
           {\typeout{*************************************^^J%
                     * Local config file scrdate.cfg used^^J%
                     *************************************}}
           {}
%    \end{macrocode}
%
% That's it:
%    \begin{macrocode}
%</scrdate>
%    \end{macrocode}
%
% \Finale
%
\endinput
%
% Ende der Datei `scrtime.dtx'
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