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#!/usr/bin/env bash
set -e
# check the required tools; we make these available through the `nix develop`
# shell so you may use that to build the manual
required_tools=("pup" "sed" "weasyprint")
for tool in "${required_tools[@]}"
do
if ! [ -x "$(command -v "$tool")" ]; then
echo "Please make sure $tool is accessible." >&2
exit 1
fi
done
# this script fetches the manual content from the remote rendered version at
# arara's website; caveat: chapters have to be manually adjusted
currdir="$PWD"
basedir="$(dirname "$currdir")/website/public/"
baseurl="file://$basedir"
if [ ! -d "$basedir" ]
then
echo "Please run zola before converting to PDF." >&2
exit 1
fi
# create a temporary directory to build the manual in; this will be created
# in /tmp, so users of operating systems without that directory must change
# it here
tempdir="/tmp/arara-quickstart"
if [ -d "$tempdir" ]
then
rm -r "$tempdir"
fi
mkdir -p "$tempdir"
cp ./resources/* "$tempdir/"
cd "$tempdir"
# these files are created in the temporary directory; no need to change
# anything at this point except that the name of the PDF file will be used
# when copying back to the source directory
htmlfile="quickstart.html"
pdffile="arara-quickstart.pdf"
cat <<EOF > $htmlfile
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>arara</title>
<meta name="keywords" content="tex, latex, context, build tool, automation">
<meta name="name" content="The cool TeX automation tool">
<meta name="description" content="arara is a TeX automation tool based on directives and rules.">
<link href="file://$tempdir/manual.css" rel="stylesheet">
</head>
<body>
<article>
<h1>A quickstart guide to arara</h1>
EOF
# assemble the manual content by fetching chapters from the webpage;
# while doing so assemble the toc for that chapter as well
cat <<EOF >> $htmlfile
$(cat "$(echo "$baseurl" | cut -c8-)quickstart/index.html" | pup --pre ':parent-of([class="heading-text"])' \
| tail -n +5 | head -n -1 \
| sed -r 's/<(\/?)h5/<\1h6/g' | sed -r 's/<(\/?)h4/<\1h5/g' \
| sed -r 's/<(\/?)h3/<\1h4/g' | sed -r 's/<(\/?)h2/<\1h3/g' \
| sed -r 's/<(\/?)h1/<\1h2/g')
EOF
cat <<EOF >> $htmlfile
</body>
</html>
EOF
# convert the created HTML manual to PDF
weasyprint -u "$baseurl" "$htmlfile" "$pdffile"
# change back to the docs directory and copy output PDF there
cd "$currdir"
cp "$tempdir/$pdffile" ./
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