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update-rss.sh
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update-rss.sh
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#! /bin/bash
# colors
RED='\033[0;31m'
GREEN='\033[0;32m'
BLUE='\033[0;34m'
PURPLE='\033[0;35m'
NC='\033[0m' # No Color
FILENAME="$1"
rssfile="projects.xml"
generate_rss_entrie () {
echo -e "----------------------------\n${PURPLE}generate_rss_entrie\n"
# You will want to change these variables to your needs.
website="https://pintosilva.com"
# In order to cleanly use sed on a multi-line file, we have to use `tr` to
# convert newlines to a set character, then run sed, then reconvert the
# character. Unfortunately, due to a current issue in GNU's tr, characters of
# more than one byte are not functioning properly. It would be more ideal to
# use a rarer character (some random Tamil character, for example), but ^ is
# one byte.
replchar='^'
# So if you have a page with ^ in it, you'll have to change this to another
# single byte character that isn't in the page like ~ or something.
link="$website/projects/$1"
title="$(sed -n 's/<h1>\(.*\)<\/h1>/\1/ip' "./public/projects/$1")"
echo -e "\nTitle: $title"
# Check and see if this page has already been added to the RSS feed.
# if grep -q "<guid.*>$link</guid>" "$rssfile"; then
# # Do this if it has been adding and we are updating it.
# # If updating a file, we append the time/date to the GUID, as all GUIDs
# # must be unique to validate an RSS feed. Even feed readers that follow
# # GUIDs will still be lead to the same page with this.
# guid="$link#$(date '+%y%m%d%H%M%S')"
# title="$title (Updated)"
# echo "Explain the nature of the update:"
# read -r content
# [ -z "$content" ] && content="New updates to $link"
# else
# Do this if it is a new page.
# echo -e "\nNew page"
guid=$link
# Get the page body content, excluding the nav and footer.
content="$(tr '\n' $replchar < "./public/projects/$1" | sed "
s/.*<body>//
s/<footer>.*<\/footer>//
s/<nav>.*<\/nav>//
s/<\/body>.*//
" | tr -s $replchar '\n')"
echo -e "$content\n"
# fi
rssdate="$(LC_TIME=en_US date '+%a, %d %b %Y %H:%M:%S %z')"
# Eh, I'm a brainlet and I'm not sure how to elegantly add in the content to
# the RSS feed without first writing it out to a file. This is because if we
# tried run, say, a sed substitute command, we'd have to escape with \
# basically every other character. If you know how to do it without creating a
# temporary file, tell me. I do the same in lb, actually.
temp="$(mktemp)";
trap 'rm -f "$temp"' 0 1 2 3 15 # Delete temp file after script termination.
echo "
<item>
<title>$title</title>
<guid>$guid</guid>
<link>$link</link>
<pubDate>$rssdate</pubDate>
<description><![CDATA[$content
]]></description>
</item>
" > "$temp"
sed -i "/<!-- LB -->/r $temp" "$rssfile"
}
echo -e "${RED}"
[ -z "$FILENAME" ] && read -p "Missing filenam.html. Updating all entries? (y,n)" -n 1 UPDATEALL
echo # Move to a new line
if [[ ! $UPDATEALL =~ ^[Yy]$ ]]
then
exit 1
fi
echo -e '\n'${BLUE}'Copied template XML to public folder:'
cp -p ${rssfile} public/${rssfile}
rssfile="public/${rssfile}"
echo -e '\n'${BLUE}'Creating rss feed entries:
\n----------------------------'
find ./public/projects/ -maxdepth 1 -type f -iname "*converted.html" | cut -d '/' -f4 |
while read line; do
echo $line
generate_rss_entrie $line
done
echo -e "----------------------------\n${NC}"