diff --git a/flaskr/blog.py b/flaskr/blog.py index 8082d2f..61b0715 100644 --- a/flaskr/blog.py +++ b/flaskr/blog.py @@ -5,6 +5,7 @@ from werkzeug.exceptions import abort from flaskr.auth import login_required from flaskr.db import get_db +from flaskr.generate_rss import generate_feed import markdown import datetime @@ -66,6 +67,7 @@ def create(): (title, body, g.user['id']) ) db.commit() + generate_feed(db) return redirect(url_for('blog.index')) return render_template('blog/create.html') @@ -119,6 +121,7 @@ def update(id): (title, body, created, id) ) db.commit() + generate_feed(db) return redirect(url_for('blog.index')) return render_template('blog/update.html', post=post) @@ -131,3 +134,7 @@ def delete(id): db.execute('DELETE FROM post WHERE id = ?',(id,)) db.commit() return redirect(url_for('blog.index')) + +@bp.route('/rss/', methods=('GET',)) +def redirect_rss(): + return redirect(url_for('static', filename='rss.xml')) diff --git a/flaskr/generate_rss.py b/flaskr/generate_rss.py new file mode 100644 index 0000000..b06327b --- /dev/null +++ b/flaskr/generate_rss.py @@ -0,0 +1,69 @@ +from datetime import datetime +import sqlite3 + +from bs4 import BeautifulSoup +from markdown import markdown + +def soup_append_multiple_tags(soup: BeautifulSoup, children: dict) -> None: + for name, string in children.items(): + soup.append(soup.new_tag(name)) + soup.find_all(name)[-1].string = string + +def post_find_first_plain_line(post: str) -> str: + while post: + if post[0].isalnum(): + break + end = post.find("\n") + post = post[end+1:] + end = post.find("\n") + return post[:end] + +def generate_feed(db): + soup = BeautifulSoup(features="xml") + + soup.append(soup.new_tag("rss", version="2.0")) + rss = soup.rss + rss["xmlns:atom"] = "http://www.w3.org/2005/Atom" + rss["xmlns:content"] = "http://purl.org/rss/1.0/modules/content/" + + rss.append(soup.new_tag("channel")) + channel = rss.channel + + channel_children = { + "description": "Blog posts from allsparkinfinite's blog", + "link": "https://blog.allsparkinfinite.name", + "title": "blogsparkinfinite", + "docs": "https://rssboard.org/rss-specification", + "language": "en-IN", + "lastBuildDate": datetime.now().strftime("%a, %d %b %Y %T +0530"), + "ttl": "240", + } + soup_append_multiple_tags(channel, channel_children) + + channel.append(channel.new_tag("atom:link")) + channel.find_all("atom:link")[-1]["href"] = "https://blog.allsparkinfinite.name/rss/" + channel.find_all("atom:link")[-1]["rel"] = "self" + channel.find_all("atom:link")[-1]["type"] = "application/rss+xml" + + channel.append(channel.new_tag("atom:link")) + channel.find_all("atom:link")[-1]["href"] = "https://blog.allsparkinfinite.name/" + channel.find_all("atom:link")[-1]["rel"] = "alternate" + channel.find_all("atom:link")[-1]["type"] = "text/html" + + posts = db.execute("SELECT * FROM post").fetchall() + posts.reverse() + + for post in posts: + channel.append(soup.new_tag("item")) + item = channel.find_all("item")[-1] + item_children = { + "description": post_find_first_plain_line(post[4]), + "guid": f"https://blog.allsparkinfinite.name/{post[0]}/", + "pubDate": post[2].strftime("%a, %d %b %Y %T GMT"), + "title": post[3], + "content:encoded": markdown(post[4]), + } + soup_append_multiple_tags(item, item_children) + + with open("flaskr/static/rss.xml", "w") as f: + f.write(soup.prettify())