Possible CSS type features?

Question

Hi I am doing a project for my 10th grade Graphic design class and we have to make up an inspirational type thing with the emotion words Bold, in a bigger size and capitalized and I was wondering if there is a way in TeX to Make a predetermined list of words to have effects on them sort of like CSS for HTML were I make that list and tell it to have those effects and Whenever I type them they will output to the effects I told it to do. here is an example

HI how was YOUR day I hope it was GREAT.

Answer 1

This is just a joke, of course. Requires XeLaTeX.

\documentclass{article}
\usepackage{fontspec}

\usepackage{xesearch}
\SearchList{upper}{\textbf{\MakeUppercase{#1}}}{hi,your,great,I}

\begin{document}

Hi, how was your day? I hope it was great.

\StopList{upper}

Hi, how was your day? I hope it was great.

\end{document}

Answer 2

Here is a totally different approach that does allow you to apply formatting to each of the words, and that is to use literate from the listings package:

Notes:

• This solution as other issues in that a verbatim environment is used.

Further Enhancements:

• I used a trailing space to check that words are matched and not parts of words. However, this requires a separate check for a trailing punctuation. Some sort of regex matching here would be helpful.

Code:

\documentclass{article}
\usepackage{listings}
\usepackage{xcolor}

\lstdefinestyle{FormattedNumber}{%
    literate={great }{\textcolor{blue}{GREAT }}{1}%
             {great.}{\textcolor{blue}{GREAT}.}{1}%
             {hi }{\textcolor{red}{HI }}{1}%
             {I }{\textcolor{orange}{I }}{1}%
             {your }{\textbf{YOUR }}{1}%
             ,
}
\newcommand{\CSS}[1]{%
    \lstinline[style=FormattedNumber]{#1}%
}

\begin{document}
    \CSS{hi how was your day I hope it was great.}
\end{document}

Answer 3

Well, here is one way to approach it: place the desired text in an environment and pre-process it before typesetting. However, I am not sure that this qualifies as an answer yet, as I think it really needs some sort of expansion magic to be able to apply macros such as \textbf{} to the desired words -- I could not get that to work. But for now this can do some simple text substitution:

Notes:

• I used the environ package which provides an environment where you can access the complete body of the environment via \BODY.
• This version needs to have ONLY plain text in the body of the environment.
• The \protected@edef below is used to prevent "bad things from happening" as per David Carlisle's comment.

Further Enhancements:

• Figure out how to apply macros to the selected words.
• Have a list of words and a specific macro to be applied to each word, and use a \foreach type of loop to process. Not sure if this is simpler or not.
• I used a trailing space to check that words are matched and not parts of words. However, this requires a separate check for a trailing punctuation. Some sort of regex matching here would be helpful.

Code:

\documentclass{article}
\usepackage{xstring}
\usepackage{environ}

\makeatletter
\newcommand{\AlteredBody}{}
\NewEnviron{CSS}{
    \protected@edef\AlteredBody{\BODY}
    \StrSubstitute{\AlteredBody}{great }{GREAT }[\AlteredBody]
    \StrSubstitute{\AlteredBody}{great.}{GREAT.}[\AlteredBody]
    \StrSubstitute{\AlteredBody}{hi }{HI }[\AlteredBody]
    \StrSubstitute{\AlteredBody}{your }{YOUR }[\AlteredBody]
    \AlteredBody
}
\makeatother

\newcommand{\Text}{hi how was your day I hope it was great.}%

\begin{document}

\Text

\medskip
\begin{CSS}
    \Text
\end{CSS}
\end{document}