@ -5,7 +5,7 @@
# page. # page.
# Check if required executables can be found # Check if required executables can be found
if ! type readlink dirname html2text mv; then if ! type readlink dirname html2text mv cat cksum base64 ; then
echo 'One or more required executables are not present. Generation cancelled' >& 2
echo 'One or more required executables are not present. Generation cancelled' >& 2
exit 1
exit 1
fi fi
@ -31,9 +31,7 @@ html-to-text() {
html2text -nobs -style compact " $@ "
html2text -nobs -style compact " $@ "
} }
blog_html = " $here /blog.html " print-blog-html-top( ) {
{
echo ' <html>
echo ' <html>
<head>
<head>
<title>Blog</title>
<title>Blog</title>
@ -71,32 +69,121 @@ blog_html="$here/blog.html"
<a href = "index.html" >Home</a>
<a href = "index.html" >Home</a>
<h1>Blog</h1>
<h1>Blog</h1>
' '
while read -r post_html; do
}
# Convert the post's html to text to make it easier to use the blog's text
text = " $( html-to-text " $post_html " | escape-html) " || exit $?
# The title should be on the 2nd line of text, right after the link to the
print-blog-html-bottom( ) {
# homepage. This is a bit inflexible but it will do for now.
echo ' </body>
title = " $( tail -n +2 <<< " $text " | head -n 1 | tr -d '*' ) " || exit $?
</html>'
}
# Use the first 5 lines after the title as post excerpt.
# Note: pubDate and lastBuildDate are both set to the current time.
excerpt = " $( tail -n +3 <<< " $text " | head -n 5) " || exit $?
print-blog-rss-top( ) {
cat <<EOF
<?xml version = "1.0" ?>
<rss version = "2.0" >
<channel>
<title>Hugot Blog</title>
<link>https://hugot.nl/blog.html</link>
<description>Hugo' s personal blog</description>
<language>en-us</language>
<pubDate>$( date) </pubDate>
<lastBuildDate>$( date) </lastBuildDate>
<docs>http://blogs.law.harvard.edu/tech/rss</docs>
<generator>Hugo' s Custom Bash Script</generator>
<managingEditor>social@hugot.nl</managingEditor>
<webMaster>infra@hugot.nl</webMaster>
EOF
}
# Escape the post html file name to safely use it in the generated html.
print-blog-rss-bottom( ) {
href = " $( escape-html <<< " $post_html " ) " || exit $?
echo ' </channel>
</rss>'
}
printf '<div><a href="%s"><h2>%s</h2></a><p>%s ... <a href="%s">Continue reading</a></p></div><hr>\n' \
el( ) {
" $href " \
format_string = " $1 "
" $title " \
shift
" $excerpt " \
" $href "
done < " $posts_file "
echo ' </body>
printf " < $format_string > " " $@ "
</html>'
}
el-close( ) {
echo " </ $1 > "
}
el-enclose( ) {
element_name = " $1 "
shift
echo " < $element_name > " " $@ " " </ $element_name > "
}
site_url = "https://hugot.nl"
blog_html = " $here /blog.html "
new_html = " $blog_html .new "
blog_rss = " $here /feed.xml "
new_rss = " $blog_rss .new "
print-blog-html-top > " $new_html "
print-blog-rss-top > " $new_rss "
while read -r post_html; do
# Convert the post's html to text to make it easier to use the blog's text
text = " $( html-to-text " $post_html " | escape-html) " || exit $?
# The title should be on the 2nd line of text, right after the link to the
# homepage. This is a bit inflexible but it will do for now.
title = " $( tail -n +2 <<< " $text " | head -n 1 | tr -d '*' ) " || exit $?
# Use the first 5 lines after the title as post excerpt.
excerpt = " $( tail -n +3 <<< " $text " | head -n 5) " || exit $?
# Escape the post html file name to safely use it in the generated html.
href = " $( escape-html <<< " $post_html " ) " || exit $?
post_dir = " $( dirname " $post_html " ) " || exit $?
pubdate_file = " $post_dir /publish_date.txt "
# Determine a publishing date for the post
if [ [ -f " $pubdate_file " ] ] ; then
read -r pubdate < " $pubdate_file "
else
pubdate = " $( date) "
echo " $pubdate " > " $pubdate_file "
fi
{
el div
el 'a href="%s"' " $href "
printf '<h2 style="margin-bottom: 0;">%s</h2>' " $title "
el-close a
printf '<i style="font-size: 0.8em;">%s</i>' " $pubdate "
el 'p style="margin-top: 0.5em;"'
printf '%s ... <a href="%s">Continue reading</a>' " $excerpt " " $href "
el-close p
el-close div
el hr
} >> " $new_html "
{
el-enclose title " $title "
el-enclose description " $excerpt "
el-enclose pubDate " $pubdate "
el-enclose guid " ${ href } # $( base64 <( cksum <<< " $text " ) ) "
} >> " $new_rss "
done < " $posts_file "
} > " $blog_html .new " print-blog-html-bottom >> " $new_html "
print-blog-rss-bottom >> " $new_rss "
mv -v " $blog_html .new " " $blog_html " || exit $?
mv -v " $new_html " " $blog_html " || exit $?
mv -v " $new_rss " " $blog_rss " || exit $?
echo 'SUCCESS!' echo 'SUCCESS!'
Hugo Thunnissen
4 years ago