md2tex.rb

inputs = []

while line = gets
  inputs.push line.chomp!
end

puts '\documentclass[onecolumn, a4paper, dvipdfmx]{jsarticle}
\usepackage{listings}
\usepackage{color}
%\usepackage{pdfcolparallel}
\usepackage{layout}
\usepackage[dvipdfmx]{graphicx}
\usepackage[margin=2cm, bottom=3cm, footskip=1.5cm]{geometry}
\usepackage{url}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{here}

\begin{document}
  \definecolor{OliveGreen}{cmyk}{0.64,0,0.95,0.40}
  \definecolor{colFunc}{rgb}{1,0.07,0.54}
  \definecolor{CadetBlue}{cmyk}{0.62,0.57,0.23,0}
  \definecolor{Brown}{cmyk}{0,0.81,1,0.60}
  \definecolor{colID}{rgb}{0.63,0.44,0}

  \lstset{
      breaklines=true,%折り返し
  }

\title{'+ inputs[0] +'}
\author{なまえ}
\maketitle

'

inputs[1..-1].each do |line|
  if line[0..1] == '##'
    puts '\subsection{' + line.sub('##', '').lstrip + '}'
    next
  end

  if line[0] == '#'
    puts '\section{' + line.sub('#', '').lstrip + '}'
    next
  end

  if line[0..1] == '!['
    img_path = line[line.index('(')+1..line.index(')')-1]
    caption = line[2..line.index(']')-1]
    width = line.split(') ')[1].to_i
  puts '\begin{figure}[H]
  \begin{center}
    \includegraphics[width='+width.to_s+'cm]{./'+img_path+'}
    \caption{'+caption+'}
  \end{center}
  \end{figure}
  '
  next
  end

  if line =='listing'
    puts '\begin{lstlisting}[basicstyle=\ttfamily\footnotesize, frame=single]'
    next
  end
  if line=='\listing'
    puts '\end{lstlisting}'
    next
  end

  if line=='itemize'
    puts '\begin{itemize}'
    next
  end

  if line=='\itemize'
    puts '\end{itemize}'
    next
  end

  if line[0] == '-'
    puts line.sub('-', '\item')
    next
  end

  if line=='enumerate'
    puts '\begin{enumerate}'
    next
  end

  if line=='\enumerate'
    puts '\end{enumerate}'
    next
  end

  if line=='equation'
    puts '\begin{equation}'
    next
  end

  if line=='\equation'
    puts '\end{equation}'
    next
  end

  if line=='eqnarray'
    puts '\begin{eqnarray}'
    next
  end

  if line=='\eqnarray'
    puts '\end{eqnarray}'
    next
  end

  puts line
end

puts '
\end{document}
'