style: rubcop warnings fixes

Gemfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 gem 'activesupport', '>=6.0.2.2'

Rakefile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rake/testtask'
 
 Rake::TestTask.new do |test|

bin/mp3lyrics

@@ -1,3 +1,4 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 require 'mp3lyrics'

lib/mp3lyrics.rb

@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 require 'mp3info'
 require 'require_all'
 
@@ -75,6 +77,7 @@ def usage_message(override_options, use_options)
 files.each do |file|
   filename = File.extname(file)
   next unless filename == '.mp3'
+
   Mp3Info.open(file) do |mp3|
     artist = mp3.tag.artist || mp3.tag1.artist || mp3.tag2.artist
     title = mp3.tag.title || mp3.tag1.title || mp3.tag2.title
@@ -86,9 +89,7 @@ def usage_message(override_options, use_options)
     # Either no tag is set, the mp3 file has no USLT tag or we override anyway
     if !mp3.hastag2? || (mp3.hastag2? && !mp3.tag2.key?('USLT')) || override
       lyrics = nil
-      if wiki_to_use.nil? || wiki_to_use == 'lyricwiki'
-        lyrics = LyricWiki.new.get_lyrics(artist, title)
-      end
+      lyrics = LyricWiki.new.get_lyrics(artist, title) if wiki_to_use.nil? || wiki_to_use == 'lyricwiki'
       if wiki_to_use.nil? || wiki_to_use == 'genius'
         lyrics = Genius.new.get_lyrics(artist, title) if lyrics.nil?
       end

lib/wiki/azlyrics.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './wiki'
 
 # Fetches the lyrics from AZLyrics.com

lib/wiki/genius.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './wiki'
 
 # Fetches the lyrics from Genius (formerly known as Rap Genius)
@@ -12,6 +14,7 @@ def get_lyrics(artist, song, limit = 10)
 
     res = fetch("https://genius.com/#{artist.downcase}-#{song.downcase}-lyrics", limit)
     return nil unless res.is_a? Net::HTTPSuccess
+
     lyrics = Nokogiri::HTML(res.body).xpath('//div[@class="lyrics"]//p[1]')
     lyrics.inner_html.gsub('<br>', "\r").gsub(%r{</?[^>]+>}, '').delete("\n")
   end

lib/wiki/lyricwiki.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './wiki'
 
 # Fetches the lyrics from LyricWiki

lib/wiki/metrolyrics.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './wiki'
 
 # Fetches the lyrics from MetroLyrics

lib/wiki/wiki.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'active_support/inflector'
 require 'net/http'
 require 'nokogiri'
@@ -6,6 +8,7 @@
 class Wiki
   def fetch(uri_str, limit = 10)
     raise ArgumentError, 'The wiki site is redirecting too much, aborting...' if limit.zero?
+
     uri = prepare_url(uri_str)
     response = Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|
       req = Net::HTTP::Get.new(uri.path)
@@ -16,7 +19,7 @@ def fetch(uri_str, limit = 10)
       end
     end
     case response
-    when Net::HTTPRedirection then
+    when Net::HTTPRedirection
       fetch(response['location'], limit - 1)
     else
       response

mp3lyrics.gemspec

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Gem::Specification.new do |s|
   s.name        = 'mp3lyrics'
   s.version     = '0.1.0'

test/azlyrics_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './spec_helper'
 require_relative '../lib/wiki/azlyrics'
 

test/codeclimate-transform.rb

@@ -1,4 +1,5 @@
 #! /bin/ruby
+# frozen_string_literal: true
 
 # Temporary hack to get CodeClimate to work with SimpleCov 0.18 JSON format until issue is fixed
 # upstream: https://github.com/codeclimate/test-reporter/issues/413

test/genius_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './spec_helper'
 require_relative '../lib/wiki/genius'
 

test/lyricwiki_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './spec_helper'
 require_relative '../lib/wiki/lyricwiki'
 

test/metrolyrics_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './spec_helper'
 require_relative '../lib/wiki/metrolyrics'
 

test/spec_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'simplecov'
 require 'minitest/autorun'