datetime
I was asked how to implement a \tomorrow macro in TeX/LaTeX. While I could come up with a reasonably good solution, working for one document class, I don't see how that could be achieved in a document class agnostic way.
I found advdate, but even though the date arithmetic may be of use, it assumes a specific format for the date (which also is wrong for the locale I reside in).
Does anyone have a reasonably portable solution? Is this even possible?
These are too many questions at a time. I think I have solutions for first two and close solutions to questions three and four.
I defined different headers for long table.
Defined a column format using p{}.
datetime is used for the third and
xcolor with table option is used to do coloring.
\documentclass[english]{article}
\usepackage{times}
\usepackage{babel}
\usepackage[table]{xcolor} %use this instead of color, table option for coloring table lines
\usepackage{ulem}
\usepackage{longtable}
\usepackage[font=bf,singlelinecheck=on,format=hang,margin=2cm,labelfont=bf]{caption}
\usepackage[short,nodayofweek]{datetime}% to define date format
\newdateformat{mydate}{\THEDAY \THEMONTH \twodigit{\THEYEAR}}
\newdateformat{usvardate}{%
{\THEDAY} \shortmonthname[\THEMONTH], \THEYEAR}
\usepackage[margin=0.5in]{geometry}
%\input{rgb} % what is rgb?
%-------------------------------------
\begin{document}
%\rowcolors[\hline]{3}{green!25}{yellow!50} \arrayrulecolor{red!75!gray}
%\begin{center} % not needed as longtable is centered by default
\begin{longtable}{|l|p{2cm}|l|l|l|l|l|}
\caption{This is a long caption for table generated as at \usvardate\today\ and this may span more than one line for sure}\label{tab:mytable}\\
\hline
Surname & Column One and this is big header & Column Two & Column Three & Column Four & Column Five & Column Six \\ \hline
\endfirsthead
\multicolumn{7}{c}%
{{\bfseries \tablename\ \thetable{} -- continued from previous page}} \\
\hline
%
Surname & Column One and this is big header & Column Two & Column Three & Column Four & Column Five & Column Six \\ \hline
\endhead
%
\hline \multicolumn{7}{|r|}{{Continued on next page}} \\ \hline
\endfoot
%
\hline
\multicolumn{7}{|r|}%
{{\bfseries \tablename\ \thetable{} -- concluded}} \\
\hline
\endlastfoot
%
\arrayrulecolor{red!75!gray}
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & 5 & 6 \\ \hline
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & 5 & 6 \\ \hline
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & \multicolumn{1}{>{\columncolor{red!30}[1\tabcolsep]}l|}{5} & 6 \\ \hline
\arrayrulecolor{black}
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & 5 & 6 \\ \hline
\newpage
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & 5 & 6 \\ \hline
\rowcolor{blue!25}
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & 5 & 6 \\\hline
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & 5 & 6 \\ \hline
Oliver & 1 & \color{green}2 & \color{red}\uuline{3} & 4 & 5 & 6 \\ \hline
\end{longtable}
%\end{center}
\end{document}
You can use the datetime package to customize the formatting; a little complete example:
\documentclass{book}
\usepackage{datetime}
\newdateformat{monthyeardate}{%
\monthname[\THEMONTH], \THEYEAR}
\begin{document}
\monthyeardate\today
\end{document}
produces
Best Answer
Here is a prototype in LaTeX3; the data about tomorrow is available in the integer variables
The code follows; the final macro is just an example of how the data can be used, possibly in connection with
datetime.As you see, leap years are correctly recognized. Only Gregorian calendar, of course.
In order to define a suitable
\tomorrowcommand, you can add (before\ExplSyntaxOn) ababelversionor a
datetimeversion (requires packagedatetime, of course)This is, of course, overkill if one wants only tomorrow's date. The macros actually allow to compute any date from a given one, given the interval (positive or negative). One might make expandable also the "reverse" from a Julian date to the form "Day/Month/Year", but it would be very slow.