1 files changed, 166 insertions, 0 deletions
diff --git a/_plugins/linter.rb b/_plugins/linter.rb
new file mode 100644
index 0000000..634db80
--- /dev/null
+++ b/_plugins/linter.rb
@@ -0,0 +1,166 @@
+require 'set'
+
+IGNORED_PAGES = Set['sitemap.xml']
+LANGS = Set['en', 'pt', 'fr', 'eo'] # jp zh es de
+TRACKERS = '-a udp://tracker.coppersurfer.tk:6969/announce -a udp://tracker.ccc.de:80/announce -a udp://tracker.publicbt.com:80 -a udp://tracker.istole.it:80 -a http://tracker.openbittorrent.com:80/announce -a http://tracker.ipv6tracker.org:80/announce'
+
+module Jekyll
+  class Linter < Generator
+    safe true
+    @@known_ids = Set[]
+
+    def insert_id(name, document)
+      lang = document.data['lang']
+      ref = document.data['ref']
+      id = "#{name}:#{lang}:#{ref}"
+      if @@known_ids.include? id then
+        raise "Duplicate ID found: '#{id}'"
+      else
+        @@known_ids.add id
+      end
+    end
+
+    def assert_unique_ids(site)
+      site.collections.each do |name, collection|
+        collection.docs.each do |document|
+          insert_id name, document
+        end
+      end
+
+      site.pages.each do |page|
+        unless IGNORED_PAGES.include? page.path
+          insert_id 'page', page
+        end
+      end
+    end
+
+    def slugify(s)
+      s.ljust(100)
+        .gsub(/[\W]+/, ' ')
+        .strip
+        .gsub(/\s\s+/, '-')
+        .downcase
+        .gsub(' ', '-')
+        .gsub('_', '-')
+    end
+
+    def assert(value, message)
+      unless value
+        raise message
+      end
+      value
+    end
+
+    def assert_field(document, field)
+      f = document.data[field]
+      raise "Undefined '#{field}' for #{document.path}" unless f
+      f
+    end
+
+    COLLECTION_LAYOUTS = {
+      'page' => 'page',
+      'articles' => 'post',
+      'pastebins' => 'post',
+      'tils' => 'post',
+      'slides' => 'slides',
+      'podcasts' => 'cast',
+      'screencasts' => 'cast'
+    }
+
+    def assert_frontmatter_fields(site, name, document)
+      title = assert_field document, 'title'
+      lang = assert_field document, 'lang'
+      ref = assert_field document, 'ref'
+      layout = assert_field document, 'layout'
+      date = document.date.strftime('%Y-%m-%d') unless layout == 'page'
+      slug = layout == 'page' ? ref : assert_field(document, 'slug')
+      extension = name == 'slides' ? 'slides' : 'md'
+
+      unless LANGS.member? lang
+        raise "Invalid lang '#{lang}' in #{document.path}"
+      end
+
+      if COLLECTION_LAYOUTS[name] != layout
+        raise "Layout mismatch: expected '#{COLLECTION_LAYOUTS[name]}', got '#{layout}' for #{document.path}"
+      end
+
+      if lang == 'en'
+        unless ['index', 'root', 'tils'].include? ref
+          if slugify(title) != ref then
+            raise "#{ref} isn't a slug of the title.\nref:        '#{ref}'\ntitle slug: '#{slugify(title)}'"
+            p slugify(title)
+          end
+        end
+      end
+
+      unless layout == 'page' then
+        path = "_#{name}/#{date}-#{slug}.#{extension}"
+        unless path == document.relative_path then
+          raise "date/filename mismatch:\ndate+slug: #{path}\nfilename:  #{document.relative_path}"
+        end
+
+        if lang == 'en' then
+          unless ref == slug then
+            raise "ref/slug mismatch:\nref:  #{ref}\nslug: #{slug}"
+          end
+        end
+      end
+
+      if name == 'podcasts' then
+        flac = "resources/podcasts/#{date}-#{slug}.flac"
+        unless File.exist? flac then
+          raise "Missing FLAC file '#{flac}'"
+        end
+
+        file = "#{date}-#{slug}.ogg"
+        ogg =  "resources/podcasts/#{date}-#{slug}.ogg"
+        unless File.exist? ogg then
+          puts "Missing '#{ogg}' file, generating..."
+          puts `ffmpeg -i #{flac} -ar 48000 -vn -c:a libvorbis -b:a 320k #{ogg}`
+          site.static_files << Jekyll::StaticFile.new(site, site.source, '', ogg)
+        end
+
+        torrent = "#{ogg}.torrent"
+        unless File.exist? torrent then
+          webseed = "#{site.config['url']}/#{ogg}"
+          puts "Missing '#{torrent}' file, generating..."
+          puts `mktorrent #{TRACKERS} -f -v -d -c '#{document.content}' -n #{file} -w #{webseed} -o #{torrent} #{ogg}`
+        end
+      end
+
+      if name == 'screencasts' then
+        mkv = "resources/screencasts/#{date}-#{slug}.mkv"
+        unless File.exist? mkv then
+          raise "Missing MKV file '#{mkv}'"
+        end
+
+        torrent = "#{mkv}.torrent"
+        unless File.exist? torrent then
+          webseed = "#{site.config['url']}/#{mkv}"
+          file = "#{date}-#{slug}.mkv"
+          puts "Missing '#{torrent}' file, generating..."
+          puts `mktorrent #{TRACKERS} -f -v -d -c '#{document.content}' -n #{file} -w #{webseed} -o #{torrent} #{mkv}`
+        end
+      end
+    end
+
+    def assert_frontmatter(site)
+      site.collections.each do |name, collection|
+        collection.docs.each do |document|
+          assert_frontmatter_fields site, name, document
+        end
+      end
+
+      site.pages.each do |page|
+        unless IGNORED_PAGES.include? page.path
+          assert_frontmatter_fields site, 'page', page
+        end
+      end
+    end
+
+    def generate(site)
+      assert_unique_ids(site)
+      assert_frontmatter(site)
+    end
+  end
+end