gemlog.sh/gemlog.sh

#!/usr/bin/env bash

# Copyright 2020 nytpu
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

# fill out variables here
make_globals() {
	global_title="yatg"
	global_description="yet another tech gemlog"
	global_url="gemini://nytpu.com/gemlog/" # link to base url of blog
	global_author="nytpu"
	global_license="CC by"

	gemlog_feed="feed.rss" # filename of the rss feed
	number_of_feed_articles="50" # number of posts in rss feed
	feed_base_url="https://nytpu.com/files/" # base url that the feed is hosted at

	index="index.gmi" # main page, not recommended to change

	# don't change these
	date_format_full="%a, %d %b %Y %H:%M:%S %z"
	date_format_timestamp="%Y%m%d%H%M.%S"
}

get_post_title() {
	cat "$1" | perl -lne 's/#{1,3}\s+(.*)/\1/ or next; print; exit'
}

# from bashblog (https://tildegit.org/team/bashblog)
# bashblog is licensed under the gnu gplv3
make_rss() {
	echo "Making RSS"

	rssfile="$gemlog_feed.$RANDOM"
	while [[ -f $rssfile ]]; do rssfile="$gemlog_feed.$RANDOM"; done

	{
		pubdate=$(LC_ALL=C date +"$date_format_full")
		echo '<?xml version="1.0" encoding="UTF-8" ?>'
		echo '<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/">'
		echo "<channel><title>$global_title</title><link>$global_url$index</link>"
		echo "<description>$global_description</description><language>en</language>"
		echo "<lastBuildDate>$pubdate</lastBuildDate>"
		echo "<pubDate>$pubdate</pubDate>"
		echo "<atom:link href=\"$feed_base_url$gemlog_feed\" rel=\"self\" type=\"application/rss+xml\" />"

		n=0
		while IFS='' read -r i; do
			((n >= number_of_feed_articles)) && break
			echo "<item><title>"
			get_post_title "$i"
			echo "</title><description>You need a gemini protocol client to view this post.&lt;br&gt;If you have one installed, click here to open the post: &lt;a href=\"$global_url${i#'./'}\"&gt;$global_url${i#'./'}&lt;/a&gt;</description><link>$global_url${i#'./'}</link>"
			echo "<guid>$global_url${i#'./'}</guid>"
			echo "<dc:creator>$global_author</dc:creator>"
			echo "<pubDate>$(LC_ALL=C date -r "$i" +"$date_format_full")</pubDate></item>"

			n=$(( n + 1 ))
		done < <(ls -r ./[[:digit:]]*.gmi)

		echo '</channel></rss>'
	} 3>&1 >"$rssfile"

	mv "$rssfile" "$gemlog_feed"
	chmod 644 "$gemlog_feed"
}

# change this to what you want
build_entries() {
	echo "Building entries"
	{
		sed 's/$/\r/g' << 'EOF'
```yet another tech gemlog (yatg) by nytpu
  ,───────────────.
 (_\   _________   \                  __
   │  /__|___|__\  │     __  ______ _/ /_____ _
   │  `. \   / ,'  │    / / / / __ `/ __/ __ `/
   │    `.\ /,'    │   / /_/ / /_/ / /_/ /_/ /
   │      `.'      │   \__, /\__,_/\__/\__, /
   │ YET ANOTHER   │  /____/          /____/
  _│   TECH GEMLOG │                   by nytpu
 (_/_______________/
```

EOF
		while IFS='' read -r i; do
			post=$(basename $i)
			title=$(get_post_title "$i")
			pubdate=$(echo $i | perl -ne '/^(\d{4}-\d{2}-\d{2}).*/; print $1')
			printf "=> $global_url$post $pubdate — $title\r\n"
		done < <(ls -r [[:digit:]]*.gmi)

		printf "\r\n\r\n"
		printf "=> / go home\r\n"
		printf "\r\n"
		printf "this gemlog has an rss feed at:\r\n"
		printf "=> $feed_base_url$gemlog_feed [https] $feed_base_url$gemlog_feed\r\n"
		printf "=> /gemlog/feed.rss or here to access it through gemini\r\n"
		printf "\r\n"
		printf "=> /gemlog/old/ click here to view an archive of my old gemlog"
	} 3>&1 >"$index"
}

toot() {
	filename=$(ls -r ./[[:digit:]]*.gmi | head -n 1 | xargs basename)
	title=$(get_post_title "$filename")
	read -r -p "do you want to toot the newest post? [y/N] " response
	if [[ "$response" =~ ^([yY][eE][sS]|[yY])$ ]]
	then
		printf "new blog post: ${title}\n\ngemini://nytpu.com/gemlog/${filename}" | toot post 
	fi
}

make_globals
make_rss
build_entries
toot