$.*$<\/title>/\1/Ip' "$1")" # Check and see if this page has already been added to the RSS feed. if grep -q "<guid.*>$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 $link" else # Do this if it is a new page. guid=$link # Get the page body content, excluding the nav and footer. content="$(tr '\n' $replchar < "$1" | sed " s/.*<body>// s/<footer>.*<\/footer>// s/<nav>.*<\/nav>// s/<\/body>.*// " | tr -s $replchar '\n')" fi rssdate="$(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

#!/bin/sh [ ! -f "$1" ] && echo "Give \`sup\` a page which has been added/updated." && exit 1 # You will want to change these variables to your needs. website="https://r1k.tilde.institute" rssfile="rss.xml" # In order to cleanly use sed on a multi-line file, we have to use `tr` to # convert newlines to a set character, then run sed, then reconvert the # character. Unfortunately, due to a current issue in GNU's tr, characters of # more than one byte are not functioning properly. It would be more ideal to # use a rarer character (some random Tamil character, for example), but ^ is # one byte. replchar='^' # So if you have a page with ^ in it, you'll have to change this to another # single byte character that isn't in the page like ~ or something. link="$website/$1" title="$(sed -n 's/$.*$<\/title>/\1/Ip' "$1")" # Check and see if this page has already been added to the RSS feed. if grep -q "<guid.*>$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 $link" else # Do this if it is a new page. guid=$link # Get the page body content, excluding the nav and footer. content="$(tr '\n' $replchar < "$1" | sed " s/.*<body>// s/<footer>.*<\/footer>// s/<nav>.*<\/nav>// s/<\/body>.*// " | tr -s $replchar '\n')" fi rssdate="$(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 $guid $link $rssdate " > "$temp" sed -i "//r $temp" "$rssfile"