journal.tex

\documentclass{tufte-book}
%\documentclass{article}
%\usepackage{lipsum}
\usepackage{tikz}
\usepackage{xifthen}
\usepackage{xeCJK}  

\setCJKmainfont{Microsoft JhengHei}
\XeTeXlinebreaklocale "zh" 
\XeTeXlinebreakskip = 0pt plus 1pt

\newenvironment{loggentry}[2]% date, heading
{\noindent\textbf{#2}\marginnote{#1}\par}{\vspace{0.5cm}}

\def\?#1{}

\pgfmathtruncatemacro{\StartYear}{2014}
\pgfmathtruncatemacro{\EndYear}{2024}

\newcommand{\writetitle}{0}
\newcommand{\mytitle}[1]
{   \ifthenelse{\writetitle=1}{#1}{}
}

\newread\mysource

\begin{document}

\foreach \Year in {\StartYear,...,\EndYear}
{   \foreach \Month in {Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec}
    {   \foreach \Day in {1,...,31}
        {   \IfFileExists{\Year/\Month/\Day}
                {   \openin\mysource=\Year/\Month/\Day.tex
                    \read\mysource to \firstline
                    \closein\mysource
                    \xdef\writetitle{1}
                    \begin{loggentry}{\Year - \Month - \Day}{\firstline}    
                        \xdef\writetitle{0}
                        \input{\Year/\Month/\Day}
                        
                    \end{loggentry} 
        }
        {   % files does not exist, so nothing to do
        }

        }  
    }
}

\end{document}