130 lines
3.8 KiB
Ruby
130 lines
3.8 KiB
Ruby
# Jekyll plugin for generating an rss 2.0 feed for posts
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#
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# Based on https://github.com/kikoval/jekyll-rss/ but heavily modified
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#
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# Usage: place this file in the _plugins directory and set the required configuration
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# attributes in the _config.yml file
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#
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# Uses the following attributes in _config.yml:
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# title - the title of the site
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# url - the url of the site
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# description - (optional) a description for the feed (if not specified will be generated from title)
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# author - (optional) the author of the site (if not specified will be left blank)
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# copyright - (optional) the copyright of the feed (if not specified will be left blank)
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# rss_path - (optional) the path to the feed (if not specified "/" will be used)
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# rss_name - (optional) the name of the rss file (if not specified "rss.xml" will be used)
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# rss_post_limit - (optional) the number of posts in the feed
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#
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# Author: Assaf Gelber <assaf.gelber@gmail.com>
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# Site: http://agelber.com
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# Source: http://github.com/agelber/jekyll-rss
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#
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# Distributed under the MIT license
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# Copyright Assaf Gelber 2013
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require "jekyll"
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require "rss"
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module RssFeed
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class Page < Jekyll::Page; end
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class Generator < Jekyll::Generator
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priority :low
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safe true
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attr_reader :site, :rss_content
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# Generates an rss 2.0 feed
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#
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# site - the site
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#
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# Returns nothing
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def generate(site)
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@site = site
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feed_items = []
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# collect Data
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@rss_content = RSS::Maker.make('2.0') do |maker|
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maker.channel.title = @site.config['title']
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maker.channel.link = @site.config['url']
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maker.channel.description = @site.config['description'] || "RSS feed for #{site.config['title']}"
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maker.channel.author = @site.config['author']
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maker.channel.updated = @site.posts.docs.map { |p| p.date }.max
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maker.channel.copyright = @site.config['copyright']
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@site.collections.each do |name, meta|
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Jekyll.logger.info "muhh Feed:", "Adding #{name} to global feed"
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feed_items
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site.posts.docs.reverse[0..post_limit].each do |post|
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maker.items.new_item do |item|
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item.title = post.data["title"]
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item.link = "#{@site.config['url']}#{post.url}"
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item.description = post.data["excerpt"]
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item.updated = post.date
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end
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end
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end
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end
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create_file
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# Add the feed page to the site pages
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site.pages << RssFeed::Page.new(site, site.dest, rss_path, rss_name)
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end
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private
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def rss_path
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ensure_slashes(@site.config['rss_path'] || "/")
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end
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def rss_name
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@site.config['rss_name'] || "rss.xml"
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end
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def create_file
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full_path = File.join(@site.dest, rss_path)
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ensure_dir(full_path)
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File.open("#{full_path}#{rss_name}", "w") { |f| f.write(@rss_content) }
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end
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# Ensures the given path has leading and trailing slashes
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#
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# path - the string path
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#
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# Return the path with leading and trailing slashes
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def ensure_slashes(path)
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ensure_leading_slash(ensure_trailing_slash(path))
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end
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# Ensures the given path has a leading slash
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#
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# path - the string path
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#
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# Returns the path with a leading slash
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def ensure_leading_slash(path)
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path[0] == "/" ? path : "/#{path}"
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end
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# Ensures the given path has a trailing slash
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#
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# path - the string path
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#
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# Returns the path with a trailing slash
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def ensure_trailing_slash(path)
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path[-1] == "/" ? path : "#{path}/"
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end
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# Ensures the given directory exists
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#
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# path - the string path of the directory
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#
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# Returns nothing
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def ensure_dir(path)
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FileUtils.mkdir_p(path)
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end
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def post_limit
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@site.config['rss_post_limit'] - 1 rescue @site.posts.count
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end
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end
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end
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