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datetime2-calc.sty
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datetime2-calc.sty
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%%
%% This is file `datetime2-calc.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% datetime2.dtx (with options: `datetime2-calc.sty,package')
%%
%% datetime2.dtx
%% Copyright 2015 Nicola Talbot
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% of this license of (at your option) any later version.
%% The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%%
%% This work has the LPPL maintenance status `maintained'.
%%
%% The Current Maintainer of this work is Nicola Talbot.
%%
%% This work consists of the files datetime2.dtx and datetime2.ins and the derived files datetime2.sty, datetime2-calc.sty.
%%
%% \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
%% Digits \0\1\2\3\4\5\6\7\8\9
%% Exclamation \! Double quote \" Hash (number) \#
%% Dollar \$ Percent \% Ampersand \&
%% Acute accent \' Left paren \( Right paren \)
%% Asterisk \* Plus \+ Comma \,
%% Minus \- Point \. Solidus \/
%% Colon \: Semicolon \; Less than \<
%% Equals \= Greater than \> Question mark \?
%% Commercial at \@ Left bracket \[ Backslash \\
%% Right bracket \] Circumflex \^ Underscore \_
%% Grave accent \` Left brace \{ Vertical bar \|
%% Right brace \} Tilde \~}
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{datetime2-calc}[2015/03/24 v1.0 (NLCT)]
\RequirePackage{pgfkeys}
\RequirePackage{pgfcalendar}
\newcount\@dtm@julianday
\def\@dtm@parsedate#1-#2-#3\@dtm@endparsedate{%
\pgfcalendardatetojulian{#1-#2-#3}{\@dtm@julianday}%
\pgfcalendarjuliantodate{\@dtm@julianday}{\@dtm@year}{\@dtm@month}{\@dtm@day}%
\pgfcalendarjuliantoweekday{\@dtm@julianday}{\count@}%
\edef\@dtm@dow{\number\count@}%
}
\pgfcalendardatetojulian
{\@dtm@currentyear-\@dtm@currentmonth-\@dtm@currentday}%
{\@dtm@julianday}%
\pgfcalendarjuliantoweekday{\@dtm@julianday}{\count@}%
\edef\@dtm@currentdow{\number\count@}%
\newrobustcmd*{\DTMsavejulianday}[2]{%
\pgfcalendarjuliantodate{#2}{\@dtm@year}{\@dtm@month}{\@dtm@day}%
\pgfcalendarjuliantoweekday{#2}{\count@}%
\csedef{@dtm@#1@dow}{\number\count@}%
\cslet{@dtm@#1@year}{\@dtm@year}%
\cslet{@dtm@#1@month}{\@dtm@month}%
\cslet{@dtm@#1@day}{\@dtm@day}%
\ifcsundef{@dtm@#1@hour}{\csdef{@dtm@#1@hour}{0}}{}%
\ifcsundef{@dtm@#1@minute}{\csdef{@dtm@#1@minute}{0}}{}%
\ifcsundef{@dtm@#1@second}{\csdef{@dtm@#1@second}{0}}{}%
\ifcsundef{@dtm@#1@TZhour}{\csdef{@dtm@#1@TZhour}{0}}{}%
\ifcsundef{@dtm@#1@TZminute}{\csdef{@dtm@#1@TZminute}{0}}{}%
}
\newrobustcmd*{\DTMsaveddatetojulianday}[2]{%
\ifcsundef{@dtm@#1@year}%
{%
\PackageError{datetime2-calc}{Unknown date `#1'}{}%
}%
{%
\pgfcalendardatetojulian
{\csname @dtm@#1@year\endcsname
-\csname @dtm@#1@month\endcsname
-\csname @dtm@#1@day\endcsname}
{#2}%
}%
}
\newrobustcmd*{\DTMsaveddateoffsettojulianday}[3]{%
\ifcsundef{@dtm@#1@year}%
{%
\PackageError{datetime2-calc}{Unknown date `#1'}{}%
}%
{%
\pgfcalendardatetojulian
{\csname @dtm@#1@year\endcsname
-\csname @dtm@#1@month\endcsname
-\csname @dtm@#1@day\endcsname
+#2}
{#3}%
}%
}
\newrobustcmd*{\DTMifdate}[4]{%
\ifcsundef{@dtm@#1@year}%
{%
\PackageError{datetime2-calc}{Unknown date `#1'}{}%
}%
{%
\pgfcalendarifdate
{\csname @dtm@#1@year\endcsname
-\csname @dtm@#1@month\endcsname
-\csname @dtm@#1@day\endcsname}
{#2}{#3}{#4}%
}%
}
\newrobustcmd*{\DTMsaveddatediff}[3]{%
\ifcsundef{@dtm@#1@year}%
{%
\PackageError{datetime2-calc}{Unknown date `#1'}{}%
}%
{%
\ifcsundef{@dtm@#2@year}%
{%
\PackageError{datetime2-calc}{Unknown date `#1'}{}%
}%
{%
\pgfcalendardatetojulian
{\csname @dtm@#1@year\endcsname
-\csname @dtm@#1@month\endcsname
-\csname @dtm@#1@day\endcsname}
{#3}%
\pgfcalendardatetojulian
{\csname @dtm@#2@year\endcsname
-\csname @dtm@#2@month\endcsname
-\csname @dtm@#2@day\endcsname}
{\@dtm@julianday}%
\advance#3 by -\@dtm@julianday\relax
}
}%
}
\newrobustcmd*{\DTMtozulu}[2]{%
\ifcsundef{@dtm@#1@year}%
{%
\PackageError{datetime2-calc}{Unknown date `#1'}{}%
}%
{%
\DTMsaveaszulutime{#2}%
{\DTMfetchyear{#1}}%
{\DTMfetchmonth{#1}}%
{\DTMfetchday{#1}}%
{\DTMfetchhour{#1}}%
{\DTMfetchminute{#1}}%
{\DTMfetchsecond{#1}}%
{\DTMfetchTZhour{#1}}%
{\DTMfetchTZminute{#1}}%
}%
}
\newrobustcmd*{\DTMsaveaszulutime}[9]{%
\edef\@dtm@year{\number#2}%
\edef\@dtm@month{\number#3}%
\edef\@dtm@day{\number#4}%
\edef\@dtm@hour{\number#5}%
\edef\@dtm@minute{\number#6}%
\edef\@dtm@second{\number#7}%
\edef\@dtm@TZhour{\number#8}%
\edef\@dtm@TZminute{\number#9}%
\pgfcalendardatetojulian{\@dtm@year-\@dtm@month-\@dtm@day}{\@dtm@julianday}%
\ifnum\@dtm@TZminute=0\relax
\else
\count@=\@dtm@minute\relax
\ifnum\@dtm@TZhour<0\relax
\advance\count@ by -\@dtm@TZminute\relax
\else
\advance\count@ by \@dtm@TZminute\relax
\fi
\edef\@dtm@minute{\number\count@}%
\ifnum\count@<0\relax
\advance\count@ by 60\relax
\edef\@dtm@minute{\number\count@}%
\ifnum\@dtm@hour=0\relax
\def\@dtm@hour{23}%
\advance\@dtm@julianday by -1\relax
\else
\count@ = \@dtm@hour\relax
\advance\count@ by -1\relax
\edef\@dtm@hour{\number\count@}%
\fi
\else
\ifnum\count@>59\relax
\advance\count@ by -60\relax
\edef\@dtm@minute{\number\count@}%
\count@ = \@dtm@hour\relax
\advance\count@ by 1\relax
\edef\@dtm@hour{\number\count@}%
\ifnum\thehour=24\relax
\def\thehour{00}%
\advance\@dtm@julianday by 1\relax
\fi
\fi
\fi
\fi
\ifnum\@dtm@TZhour=0\relax
\else
\count@=\@dtm@hour\relax
\advance\count@ by \@dtm@TZhour\relax
\ifnum\count@<0\relax
\advance\count@ by 24\relax
\edef\@dtm@hour{\number\count@}%
\advance\@dtm@julianday by -1\relax
\else
\ifnum\count@>23\relax
\advance\count@ by -24\relax
\edef\@dtm@hour{\number\count@}%
\advance\@dtm@julianday by 1\relax
\else
\edef\@dtm@hour{\number\count@}%
\fi
\fi
\fi
\pgfcalendarjuliantodate{\@dtm@julianday}{\@dtm@year}{\@dtm@month}{\@dtm@day}%
\pgfcalendarjuliantoweekday{\@dtm@julianday}{\count@}%
\csedef{@dtm@#1@dow}{\number\count@}%
\cslet{@dtm@#1@year}{\@dtm@year}%
\cslet{@dtm@#1@month}{\@dtm@month}%
\cslet{@dtm@#1@day}{\@dtm@day}%
\cslet{@dtm@#1@hour}{\@dtm@hour}%
\cslet{@dtm@#1@minute}{\@dtm@minute}%
\cslet{@dtm@#1@second}{\@dtm@second}%
\csdef{@dtm@#1@TZhour}{0}%
\csdef{@dtm@#1@TZminute}{0}%
}
\endinput
%%
%% End of file `datetime2-calc.sty'.