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\documentclass[dvipsnames,14pt,t]{beamer}
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\usepackage{beamerthemeplainculight}
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\usepackage[T1]{fontenc}
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\usepackage[latin1]{inputenc}
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\usepackage{mathpartir}
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\usepackage[absolute,overlay]{textpos}
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\usepackage{ifthen}
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\usepackage{tikz}
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\usepackage{pgf}
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\usepackage{calc}
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\usepackage{ulem}
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\usepackage{courier}
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\usepackage{listings}
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\renewcommand{\uline}[1]{#1}
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\usetikzlibrary{arrows}
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\usetikzlibrary{automata}
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\usetikzlibrary{shapes}
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\usetikzlibrary{shadows}
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\usetikzlibrary{positioning}
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\usetikzlibrary{calc}
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\usepackage{graphicx}
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\definecolor{javared}{rgb}{0.6,0,0} % for strings
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\definecolor{javagreen}{rgb}{0.25,0.5,0.35} % comments
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\definecolor{javapurple}{rgb}{0.5,0,0.35} % keywords
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\definecolor{javadocblue}{rgb}{0.25,0.35,0.75} % javadoc
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\lstset{language=Java,
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basicstyle=\ttfamily,
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keywordstyle=\color{javapurple}\bfseries,
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stringstyle=\color{javagreen},
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commentstyle=\color{javagreen},
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morecomment=[s][\color{javadocblue}]{/**}{*/},
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numbers=left,
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numberstyle=\tiny\color{black},
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stepnumber=1,
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numbersep=10pt,
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tabsize=2,
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showspaces=false,
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showstringspaces=false}
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\lstdefinelanguage{scala}{
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morekeywords={abstract,case,catch,class,def,%
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do,else,extends,false,final,finally,%
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for,if,implicit,import,match,mixin,%
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new,null,object,override,package,%
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private,protected,requires,return,sealed,%
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super,this,throw,trait,true,try,%
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type,val,var,while,with,yield},
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otherkeywords={=>,<-,<\%,<:,>:,\#,@},
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sensitive=true,
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morecomment=[l]{//},
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morecomment=[n]{/*}{*/},
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morestring=[b]",
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morestring=[b]',
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morestring=[b]"""
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}
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\lstset{language=Scala,
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basicstyle=\ttfamily,
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keywordstyle=\color{javapurple}\bfseries,
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stringstyle=\color{javagreen},
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commentstyle=\color{javagreen},
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morecomment=[s][\color{javadocblue}]{/**}{*/},
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numbers=left,
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numberstyle=\tiny\color{black},
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stepnumber=1,
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numbersep=10pt,
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tabsize=2,
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showspaces=false,
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showstringspaces=false}
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% beamer stuff
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\renewcommand{\slidecaption}{AFL 01, King's College London, 26.~September 2012}
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\begin{document}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}<1>[t]
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\frametitle{%
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\begin{tabular}{@ {}c@ {}}
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1
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\\[-3mm]
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\LARGE Automata and \\[-2mm]
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\LARGE Formal Languages (1)\\[-3mm]
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\end{tabular}}
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\begin{center}
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\includegraphics[scale=0.3]{pics/ante1.jpg}\hspace{5mm}
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\includegraphics[scale=0.31]{pics/ante2.jpg}\\
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\footnotesize\textcolor{gray}{Antikythera automaton, 100 BC (Archimedes?)}
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\end{center}
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\normalsize
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\begin{center}
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\begin{tabular}{ll}
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Email: & christian.urban at kcl.ac.uk\\
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Of$\!$fice: & S1.27 (1st floor Strand Building)\\
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Slides: & KEATS
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\end{tabular}
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\end{center}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\begin{textblock}{1}(2,5)
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\begin{tabular}{c}
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\includegraphics[scale=0.15]{pics/servers.png}\\[-2mm]
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\small Server
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\end{tabular}
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\end{textblock}
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\begin{textblock}{1}(5.6,4)
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\begin{tikzpicture}[scale=1.1]
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\draw[white] (0,1) node (X) {};
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\draw[white] (2,1) node (Y) {};
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\draw[white] (0,0) node (X1) {};
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\draw[white] (2,0) node (Y1) {};
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\draw[white] (0,-1) node (X2) {};
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\draw[white] (2,-1) node (Y2) {};
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\draw[red, <-, line width = 2mm] (X) -- (Y);
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\node [inner sep=5pt,label=above:\textcolor{black}{GET request}] at ($ (X)!.5!(Y) $) {};
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\draw[red, ->, line width = 2mm] (X1) -- (Y1);
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\node [inner sep=5pt,label=above:\textcolor{black}{webpage}] at ($ (X1)!.5!(Y1) $) {};
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\draw[red, <-, line width = 2mm] (X2) -- (Y2);
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\node [inner sep=7pt,label=above:\textcolor{black}{POST data}] at ($ (X2)!.5!(Y2) $) {};
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\end{tikzpicture}
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\end{textblock}
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\begin{textblock}{1}(9,5.5)
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\begin{tabular}{c}
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\includegraphics[scale=0.15]{pics/laptop.png}\\[-2mm]
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\small Browser
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\end{tabular}
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\end{textblock}
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\only<2>{
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\begin{textblock}{10}(2,13.5)
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\begin{itemize}
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\item programming languages, compilers
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\end{itemize}
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\end{textblock}}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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transforming strings into structured data\\[10mm]
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{\LARGE\bf Lexing}\medskip\\
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\hspace{5mm}(recognising ``words'')\\[6mm]
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{\LARGE\bf Parsing}\medskip\\
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\hspace{5mm}(recognising ``sentences'')
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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The subject is quite old:
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\begin{itemize}
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\item Turing Machines, 1936
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\item first compiler for COBOL, 1957 (Grace Hopper)
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\item but surprisingly research papers are still published now
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\end{itemize}
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\begin{flushright}
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\includegraphics[scale=0.3]{pics/hopper.jpg}\\
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\footnotesize\textcolor{gray}{Grace Hopper}
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\end{flushright}
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{\footnotesize\textcolor{gray}{(she made it to David Letterman's Tonight Show, \url{http://www.youtube.com/watch?v=aZOxtURhfEU})}}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\frametitle{\begin{tabular}{c}This Course\end{tabular}}
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\begin{itemize}
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\item regular expression / regular expression matching
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\item a bit of sets (of strings)
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\item automata
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\item the Myhill-Nerode theorem
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\item parsing
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\item grammars
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\item a small interpreter / webbrowser
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\end{itemize}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\frametitle{\begin{tabular}{c}This Course\end{tabular}}
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\begin{itemize}
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\item the ultimate goal is to implement a small web-browser (really small)\bigskip
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\end{itemize}
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Let's start with:
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\begin{itemize}
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\item a web-crawler
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\item an email harvester
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\item a web-scraper
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\end{itemize}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\frametitle{\begin{tabular}{c}Scala\end{tabular}}
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\footnotesize a simple function for reading webpages
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{\lstset{language=Scala}\fontsize{8}{10}\selectfont
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\texttt{\lstinputlisting{app0.scala}}}\pause\bigskip
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\footnotesize
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{\lstset{language=Scala}\fontsize{8}{10}\selectfont
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\texttt{\lstinputlisting{app1.scala}}}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\frametitle{\begin{tabular}{c}Cookies\end{tabular}}
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\begin{textblock}{1}(1.5,5)
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\begin{tabular}{c}
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%\includegraphics[scale=0.15]{pics/servers.png}\\[-2mm]
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\small Servers from\\[-2mm]
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\small Dot.com Inc.
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\end{tabular}
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\end{textblock}
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\begin{textblock}{1}(5.6,5.6)
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\begin{tikzpicture}[scale=2.5]
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\draw[white] (0,0) node (X) {};
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\draw[white] (1,0) node (Y) {};
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\draw[white] (0.05,-0.3) node (X1) {};
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\draw[white] (0.95,-0.3) node (Y1) {};
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\only<1-2>{\draw[red, <-, line width = 2mm] (X) -- (Y);
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\node [inner sep=5pt,label=above:\textcolor{black}{GET request}] at ($ (X)!.5!(Y) $) {};}
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\only<1>{\draw[white, <-, line width = 1mm] (X1) -- (Y1);
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\node [inner sep=2pt,label=below:\textcolor{white}{read a cookie}] at ($ (X1)!.5!(Y1) $) {};}
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\only<2>{\draw[red, <-, line width = 1mm] (X1) -- (Y1);
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\node [inner sep=2pt,label=below:\textcolor{black}{read a cookie}] at ($ (X1)!.5!(Y1) $) {};}
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\only<3->{\draw[red, ->, line width = 2mm] (X) -- (Y);
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\node [inner sep=5pt,label=above:\textcolor{black}{webpage}] at ($ (X)!.5!(Y) $) {};}
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\only<3->{\draw[red, ->, line width = 1mm] (X1) -- (Y1);
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\node [inner sep=2pt,label=below:\textcolor{black}{write a cookie}] at ($ (X1)!.5!(Y1) $) {};}
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\end{tikzpicture}
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\end{textblock}
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\begin{textblock}{1}(9.5,5.5)
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\begin{tabular}{c}
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%\includegraphics[scale=0.15]{pics/laptop.png}\\[-2mm]
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\small Client
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\end{tabular}
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\end{textblock}
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\only<4->{
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\begin{textblock}{13}(1,11)
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\small\begin{itemize}
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\item cookies: max 4KB data\\[-2mm]
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\item cookie theft, cross-site scripting attacks\\[-2mm]
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\item session cookies, persistent cookies, HttpOnly cookies, third-party cookies, zombie cookies
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\end{itemize}
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\end{textblock}}
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\only<5>{
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\begin{textblock}{11}(1,3)
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\begin{tikzpicture}
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\draw (0,0) node[inner sep=2mm,fill=cream, ultra thick, draw=red, rounded corners=2mm]
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{\normalsize\color{darkgray}
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\begin{minipage}{10cm}\raggedright\small
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{\bf EU Privacy Directive about Cookies:}\smallskip\\
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``In May 2011, a European Union law was passed stating that websites that leave non-essential cookies on visitors' devices have to alert the visitor and get acceptance from them. This law applies to both individuals and businesses based in the EU regardless of the nationality of their website's visitors or the location of their web host. It is not enough to simply update a website's terms and conditions or privacy policy. The deadline to comply with the new EU cookie law was 26th May 2012 and failure to do so could mean a fine of up to \pounds{}500,000.''
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\hfill\small\textcolor{gray}{$\rightarrow$BBC News}
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\end{minipage}};
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\end{tikzpicture}
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\end{textblock}}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[t]
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\begin{itemize}
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\item While cookies are per web-page, this can be easily circumvented.
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\end{itemize}
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\begin{textblock}{1}(1.5,4.5)
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\begin{tabular}{c}
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%\includegraphics[scale=0.07]{pics/servers.png}\\[-2mm]
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\small Pet Store\\[-2mm]
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\small Dot.com\\[-2mm]
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\end{tabular}
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\end{textblock}
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%\includegraphics[scale=0.07]{pics/servers.png}\\[-2mm]
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\small Dating.com
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%\includegraphics[scale=0.07]{pics/servers.png}\\[-2mm]
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\small Evil-Ad-No\\[-2mm]
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\small Privacy.com
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\small you
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\frametitle{\begin{tabular}{c}My First Webapp\end{tabular}}
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{\bf GET request:}\smallskip
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\begin{enumerate}
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\item read the cookie from client
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\item if none is present, set \texttt{visits} to \textcolor{blue}{$0$}
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\item if cookie is present, extract \texttt{visits} counter
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\item if \texttt{visits} is greater or equal \textcolor{blue}{$10$}, \\
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print a valued customer message\\
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otherwise just a normal message
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\item increase \texttt{visits} by \textcolor{blue}{$1$} and store new cookie with client
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\end{enumerate}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mbox{}\\[-9mm]
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%{\lstset{language=Scala}\fontsize{8}{10}\selectfont
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%\texttt{\lstinputlisting{app2.scala}}}
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\footnotesize
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\begin{itemize}
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\item cookie value encoded as hash
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[c]
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\frametitle{\begin{tabular}{c}Exam\end{tabular}}
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0
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\begin{itemize}
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\item The question ``Is this relevant for the exams?'' is not appreciated!\bigskip\\
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0
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Whatever is in the homework sheets (and is not marked optional) is relevant for the
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exam.\\ No code needs to be written.
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\end{itemize}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\mode<presentation>{
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\begin{frame}[t]
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\frametitle{\begin{tabular}{c}Maps in Scala\end{tabular}}
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\begin{itemize}
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\item {\bf\texttt{map}} takes a function, say f, and applies it to every element of the list:
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\end{itemize}
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\begin{textblock}{15}(2,7)
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\fontsize{13}{14}\selectfont
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\bf\texttt{List(1, 2, 3, 4, 5, 6, 7, 8, 9)}
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\end{textblock}
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\begin{textblock}{15}(2,10)
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\fontsize{13}{14}\selectfont
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\bf\texttt{List(1, 4, 9, 16, 25, 36, 49, 64, 81)}
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\end{textblock}
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\end{frame}}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\end{document}
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%%% Local Variables:
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%%% mode: latex
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%%% TeX-master: t
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%%% End:
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