Added project rubocop config; fixed rubocop warnings

.rubocop.yml

@@ -0,0 +1,11 @@
+Layout/EmptyLinesAroundClassBody:
+  EnforcedStyle: empty_lines
+
+Layout/MultilineOperationIndentation:
+  EnforcedStyle: indented
+
+Style/BlockDelimiters:
+  EnforcedStyle: always_braces
+
+Style/RedundantReturn:
+  Enabled: false

Gemfile

@@ -3,3 +3,6 @@
 source "https://rubygems.org"
 
 gem "toml", "~> 0.3.0"
+
+gem "rubocop", "~> 1.35.1", require: false
+

Gemfile.lock

@@ -1,14 +1,37 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    ast (2.4.2)
+    json (2.6.2)
+    parallel (1.22.1)
+    parser (3.1.2.1)
+      ast (~> 2.4.1)
     parslet (2.0.0)
+    rainbow (3.1.1)
+    regexp_parser (2.5.0)
+    rexml (3.2.5)
+    rubocop (1.35.1)
+      json (~> 2.3)
+      parallel (~> 1.10)
+      parser (>= 3.1.2.1)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.20.1, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 3.0)
+    rubocop-ast (1.21.0)
+      parser (>= 3.1.1.0)
+    ruby-progressbar (1.11.0)
     toml (0.3.0)
       parslet (>= 1.8.0, < 3.0.0)
+    unicode-display_width (2.2.0)
 
 PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  rubocop (~> 1.35.1)
   toml (~> 0.3.0)
 
 BUNDLED WITH

src/config.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'toml'
 
 # Loads and handles the application configuration.
@@ -6,10 +8,10 @@ class Config
   # class constructor
   def initialize(config_path)
     expanded_path = File.expand_path(config_path)
-    @config = TOML::load_file(expanded_path)
+    @config = TOML.load_file(expanded_path)
 
     # just in case the user wants to use a tilde (~) in the repository path...
-    @config['transcoder']['repository'] = File.expand_path(self.get('transcoder.repository'))
+    @config['transcoder']['repository'] = File.expand_path(get('transcoder.repository'))
   end
 
   # returns a configuration value from a dot-seperated string, like 'transcoder.interval'
@@ -17,7 +19,7 @@ class Config
     value = @config
     bits = path.split('.')
     bits.each { |bit|
-      if (value.key?(bit))
+      if value.key?(bit)
         value = value[bit]
       else
         abort("Configuration value #{path} does exist.")

src/repository.rb

@@ -1,4 +1,6 @@
-require_relative 'util.rb'
+# frozen_string_literal: true
+
+require_relative 'util'
 
 require 'fileutils'
 
@@ -12,7 +14,7 @@ class Repository
     create_directory(@base_path)
 
     # create sub-directories
-    sub_paths = ['ingest', 'archive', 'output']
+    sub_paths = %w[ingest archive output]
     sub_paths.each { |p|
       create_directory(File.join(@base_path, p))
     }

src/transcoder.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'pathname'
 
 # Handles the actual transcoding.
@@ -12,43 +14,43 @@ class Transcoder
     puts 'Starting transcoder...'
 
     # search for files in ingest
-    ingest_files = @repository.search_ingest()
+    ingest_files = @repository.search_ingest
     ingest_files.each { |ifile|
       # archive the file
-      #@repository.archive_file(ifile)
+      @repository.archive_file(ifile)
       # perform the transcode
-      self.transcode(ifile)
+      transcode(ifile)
       # clean up the file from ingest
-      #@repository.cleanup_file(ifile)
+      @repository.cleanup_file(ifile)
     }
   end
 
   def transcode(ingest_file)
     # create the ingest and output file paths
     ingest_path = File.join(@config.get('transcoder.repository'), 'ingest', ingest_file)
-    out_name = File.basename(ingest_file, File.extname(ingest_file)) + '.' + @config.get('transcoder.video_format')
+    out_name = "#{File.basename(ingest_file, File.extname(ingest_file))}.#{@config.get('transcoder.video_format')}"
     output_path = File.join(@config.get('transcoder.repository'), 'output', out_name)
 
-    # put together the ffmpeg command
-    ffmpeg_cmd = '/usr/bin/ffmpeg' +
-        " -i #{ingest_path}" +
-        ' -y' +
-        " -f #{@config.get('transcoder.video_format')}" +
-        " -c:v #{@config.get('transcoder.video_codec')}" +
-        " -s #{@config.get('transcoder.video_resolution')}" +
-        " -r #{@config.get('transcoder.video_framerate')}" +
-        " -vf 'format=#{@config.get('transcoder.video_color')}'" +
-        " -profile:v #{@config.get('transcoder.video_profile')}" +
-        " -c:a #{@config.get('transcoder.audio_codec')}" +
-        " #{output_path}"
+    ffmpeg_cmd = build_ffmpeg_cmd(ingest_path, output_path)
 
     # execute the FFMPEG command
     puts "Transcoding #{ingest_path} to #{output_path}."
     result = `#{ffmpeg_cmd} 2>&1 >/dev/null`
 
-    if result.end_with?("Conversion failed!\n")
-      abort "Transcoding failed with error:\n#{result}"
+    abort "Transcoding failed with error:\n#{result}" if result.end_with?("Conversion failed!\n")
   end
+
+  def build_ffmpeg_cmd(ingest_path, output_path)
+    # put together the ffmpeg command
+    "/usr/bin/ffmpeg -i #{ingest_path} -y" \
+      " -f #{@config.get('transcoder.video_format')}" \
+      " -c:v #{@config.get('transcoder.video_codec')}" \
+      " -s #{@config.get('transcoder.video_resolution')}" \
+      " -r #{@config.get('transcoder.video_framerate')}" \
+      " -vf 'format=#{@config.get('transcoder.video_color')}'" \
+      " -profile:v #{@config.get('transcoder.video_profile')}" \
+      " -c:a #{@config.get('transcoder.audio_codec')}" \
+      " #{output_path}"
   end
 
 end

src/util.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 def create_directory(path)
   if Dir.exist?(path)
     puts "Directory #{path} already exists."

src/zealot.rb

@@ -1,8 +1,10 @@
 #!/usr/bin/env ruby
 
-require_relative 'config.rb'
-require_relative 'repository.rb'
-require_relative 'transcoder.rb'
+# frozen_string_literal: true
+
+require_relative 'config'
+require_relative 'repository'
+require_relative 'transcoder'
 
 # create new configuration instance
 c = Config.new('~/.config/zealot.toml')
@@ -14,4 +16,4 @@ r = Repository.new(c.get('transcoder.repository'))
 t = Transcoder.new(c, r)
 
 # start the transcoder
-t.start()
+t.start