Tidying up the project

- Old not maintained ruby removed
- Gem version maintenance
- Github workflow
- Switch for an old version removed

Author: Nymuxyzo

.github/workflows/ruby.yml

@@ -15,14 +15,13 @@ on:
 
 jobs:
   test:
-
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7', '3.0', '3.1', '3.2']
+        ruby-version: ["3.0", "3.1", "3.2", "3.3", "3.4"]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Ruby
     # To automatically get bug fixes and new Ruby versions for ruby/setup-ruby,
     # change this to (see https://github.com/ruby/setup-ruby#versioning):

eu_central_bank.gemspec

@@ -11,8 +11,14 @@ Gem::Specification.new do |s|
   s.description  = "This gem reads exchange rates from the european central bank website. It uses it to calculates exchange rates. It is compatible with the money gem"
   s.license      = "MIT"
 
-  s.add_dependency "nokogiri", RUBY_VERSION >= "2.1" ? "~> 1.9" : "~> 1.6.8"
-  s.add_dependency "money", "~> 6.13", ">= 6.13.6"
+  s.metadata['changelog_uri'] = "https://github.com/RubyMoney/eu_central_bank/blob/main/CHANGELOG.md"
+  s.metadata['source_code_uri'] = "https://github.com/RubyMoney/eu_central_bank"
+  s.metadata['bug_tracker_uri'] = "https://github.com/RubyMoney/eu_central_bank/issues"
+
+  s.required_ruby_version = ">= 3.0.0"
+
+  s.add_dependency "nokogiri", "~> 1.11"
+  s.add_dependency "money", "~> 6.19"
 
   s.add_development_dependency "rspec", "~> 3.12.0"
 

lib/eu_central_bank.rb

@@ -41,7 +41,7 @@ def update_historical_rates(cache=nil, all=false)
   def save_rates(cache, url=ECB_RATES_URL)
     raise InvalidCache unless cache
     File.open(cache, "w") do |file|
-      io = open_url(url)
+      io = URI.open(url)
       io.each_line { |line| file.puts line }
     end
   end
@@ -56,7 +56,7 @@ def update_rates_from_s(content)
   end
 
   def save_rates_to_s(url=ECB_RATES_URL)
-    open_url(url).read
+    URI.open(url).read
   end
 
   def exchange(cents, from_currency, to_currency, date=nil)
@@ -179,9 +179,9 @@ def check_currency_available(currency)
   def doc(cache, url=ECB_RATES_URL)
     rates_source = !!cache ? cache : url
     begin
-      parse_rates(open_url(rates_source))
+      parse_rates(URI.open(rates_source))
     rescue Nokogiri::XML::XPath::SyntaxError
-      parse_rates(open_url(url))
+      parse_rates(URI.open(url))
     end
   end
 
@@ -237,12 +237,4 @@ def calculate_exchange(from, to_currency, rate)
     money = (decimal_money * from.cents * rate).round
     Money.new(money, to_currency)
   end
-
-  def open_url(url)
-    if RUBY_VERSION >= '2.5.0'
-      URI.open(url)
-    else
-      open(url)
-    end
-  end
 end