Simple RSS feed aggregator

This is a RSS feed aggregator aimed at making it easier to combine a bunch RSS feeds from different online profiles (mastodon, lemmy, pixelfed, opengameart, itch.io) into a single unified feed. The end goal of this project is to allow for stupidly simple PESOS (Publish Elsewhere, Syndicate (to your) Own Site) from platforms that support RSS feeds.

Usage

# this stores all of the given feeds in a local JSON file `db.json`
./syndication_junction fetch https://marmadilemanteater.dev/blog/rss.xml https://gamemaking.social/@emma.rss https://programming.dev/feeds/u/emma.xml?sort=New https://opengameart.org/users/105608/art.xml https://itch.io/games/newest/by-marmadilemanteater.xml https://pxlmo.com/users/emma.atom

# this outputs an RSS to a feed named `rss.xml`
./syndication_junction output-rss

# this 
# - outputs an RSS feed to a feed name `whatever-happened-to-rss.xml`
# - downloads all of the images in the feed to a local file named `media/`
# - replaces all links to images with links that start with `https://maramdilemanteater.dev/feed/media/`
./syndication_junction output-rss whatever-happened-to-rss.xml https://maramdilemanteater.dev/feed
# if you then take the output `media/` directory and put it in a place where it can be accessed from that URI,
# you have a complete feed without having to rely on external media files

There are also more configuration options stored in db.json. These are more-so things you might not want to change very frequently such as:

• The title attached to the feed

  {
    /* ... */
    "title": "title goes here",
    /* ... */
  }

• The link attached to the feed

  {
    /* ... */
    "link": "link goes here",
    /* ... */
  }

• The amount of posts a feed contains (all posts are stored in db.json for historical purposes, this just changes the output feed)

  {
    /* ... */
    "max_entries_published": -1,/* -1 is all posts */
    /* ... */
  }

• Whether or not to fill in empty titles (this is important for things like mastodon which leave title empty and make RSS readers look funny)

  {
   /* ... */
   "include_description_as_title_if_none_given": true,
   /* ... */
  }

• How many words from the description to use as auto-title

  {
   /* ... */
   "description_title_word_count": 10,
   /* ... */
  }

• What to use as the ellipsis after a post with an auto-title

  {
   /* ... */
   "title_ellipsis": "...",
   /* ... */
  }

• Whether or not to add a content:encoded element with the contents of the description element

  {
   /* ... */
   "populate_content_encoded": true,
   /* ... */
  }

• Whether or not to add attached media items to the content:encoded element (Some RSS readers don't show attached media items on posts, so this is a way of including images in a way that is visible to more RSS readers)

  {
   /* ... */
   "add_media_to_content_encoded": true,
   /* ... */
  }

• Whether or not to override entry authors with the feed's author (useful for pixelfed since all posts have an author field on them)

  {
   /* ... */
   "override_item_author": true
   /* ... */
  }

There are also configuration options per feed inside of the rss property of db.json:

{
  "rss": {
    "https://marmadilemanteater.dev/blog/rss.xml": {
      // the RSS data saved in this file from the feed
      "rss": { /* ... */ },
      // a command which syndication_junction will pipe the raw feed into and which is expected to output a slightly modified version of the feed
      "manipulate_input": "",// EX: `sed 's/something/some other thing/'`
      // currently unused atm; please, ignore
      "retain_all_entries": true,
      // override title of feed
      "title": "Emma",
      // override link to feed
      "link": "https://marmadilemanteater.dev/blog/"
    },
    /* ... */
  }
  /* ... */
}