Module: Listen::Compat::Loader

Defined in:
lib/listen/compat/wrapper.rb

Overview

Tries to require Listen using rubygems or vendored version

Class Method Summary collapse

Class Method Details

.compatible_version ⇒ Object 



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# File 'lib/listen/compat/wrapper.rb', line 21

def compatible_version
  !older_than_193?  ?  '~> 2.7' : '~> 1.1'
end

.load! ⇒ Object 



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# File 'lib/listen/compat/wrapper.rb', line 9

def load!
  defined?(gem) ? try_rubygems : try_without_rubygems
end

.msg_about_gem_install ⇒ Object 



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# File 'lib/listen/compat/wrapper.rb', line 29

def msg_about_gem_install
  format("Run \"gem install listen --version '%s'\" to get it.",
         compatible_version)
end

.older_than_193? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/listen/compat/wrapper.rb', line 25

def older_than_193?
  Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('1.9.3')
end

.try_rubygems ⇒ Object 



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# File 'lib/listen/compat/wrapper.rb', line 13

def try_rubygems
  gem 'listen', '>= 1.1.0', '< 3.0.0'
  require 'listen'
rescue LoadError, Gem::LoadError => e
  e.message.replace(format("%s\n%s", e.message, msg_about_gem_install))
  raise
end