Extract Current Ruby version/platform detection from dependency.rb

That can be reused across several places in bundler and hence
extracted that code which is responsible for properly
detecting current ruby version.

1 files changed, 81 insertions, 0 deletions

diff --git a/lib/bundler/current_ruby.rb b/lib/bundler/current_ruby.rb
new file mode 100644
index 0000000000..a08d353947
--- /dev/null
+++ b/lib/bundler/current_ruby.rb
@@ -0,0 +1,81 @@
+module Bundler
+  class CurrentRuby
+    def on_18?
+      RUBY_VERSION =~ /^1\.8/
+    end
+
+    def on_19?
+      RUBY_VERSION =~ /^1\.9/
+    end
+
+    def on_20?
+      RUBY_VERSION =~ /^2\.0/
+    end
+
+    def ruby?
+      !mswin? && (!defined?(RUBY_ENGINE) || RUBY_ENGINE == "ruby" || RUBY_ENGINE == "rbx" || RUBY_ENGINE == "maglev")
+    end
+
+    def ruby_18?
+      ruby? && on_18?
+    end
+
+    def ruby_19?
+      ruby? && on_19?
+    end
+
+    def ruby_20?
+      ruby? && on_20?
+    end
+
+    def mri?
+      !mswin? && (!defined?(RUBY_ENGINE) || RUBY_ENGINE == "ruby")
+    end
+
+    def mri_18?
+      mri? && on_18?
+    end
+
+    def mri_19?
+      mri? && on_19?
+    end
+
+
+    def mri_20?
+      mri? && on_20?
+    end
+
+    def rbx?
+      ruby? && defined?(RUBY_ENGINE) && RUBY_ENGINE == "rbx"
+    end
+
+    def jruby?
+      defined?(RUBY_ENGINE) && RUBY_ENGINE == "jruby"
+    end
+
+    def maglev?
+      defined?(RUBY_ENGINE) && RUBY_ENGINE == "maglev"
+    end
+
+    def mswin?
+      Bundler::WINDOWS
+    end
+
+    def mingw?
+      Bundler::WINDOWS && Gem::Platform.local.os == "mingw32"
+    end
+
+    def mingw_18?
+      mingw? && on_18?
+    end
+
+    def mingw_19?
+      mingw? && on_19?
+    end
+
+    def mingw_20?
+      mingw? && on_20?
+    end
+
+  end
+end