class CapistranoSentinel::GemFinder

helper used to determine gem versions

Public Class Methods

capistrano_version_2?() click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 22
def capistrano_version_2?
  cap_version = fetch_gem_version('capistrano')
  value_blank?(cap_version) ? false : verify_gem_version(cap_version, '3.0', operator: '<')
end
fetch_gem_version(gem_name) click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 45
def fetch_gem_version(gem_name)
  version = find_loaded_gem_property(gem_name)
  value_blank?(version) ? nil : get_parsed_version(version)
end
find_loaded_gem(name, property = nil) click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 35
def find_loaded_gem(name, property = nil)
  gem_spec = Gem.loaded_specs.values.find { |repo| repo.name == name }
  return if value_blank?(gem_spec)
  value_blank?(property) ?  gem_spec :  gem_spec.send(property)
end
find_loaded_gem_property(gem_name, property = 'version') click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 41
def find_loaded_gem_property(gem_name, property = 'version')
  find_loaded_gem(gem_name, property)
end
format_gem_version(version) click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 57
def format_gem_version(version)
  return version if version.size <= 2
  version.pop until version.size == 2
  version
end
get_current_gem_name() click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 6
def get_current_gem_name
  searcher = if Gem::Specification.respond_to? :find
    # ruby 2.0
    Gem::Specification
  elsif Gem.respond_to? :searcher
    # ruby 1.8/1.9
    Gem.searcher.init_gemspecs
  end
  spec = unless searcher.nil?
    searcher.find do |spec|
      File.fnmatch(File.join(spec.full_gem_path,'*'), __FILE__)
    end
  end
  spec.name unless value_blank?(spec)
end
get_parsed_version(version) click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 50
def get_parsed_version(version)
  return 0 if value_blank?(version)
  version = version.to_s.split('.')
  version = format_gem_version(version)
  version.join('.').to_f
end
value_blank?(value) click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 27
def value_blank?(value)
  value.nil? || value_empty?(value) || (value.is_a?(String) &&  /\A[[:space:]]*\z/ === value)
end
value_empty?(value) click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 31
def value_empty?(value)
  value.respond_to?(:empty?) ? !!value.empty? : !value
end
verify_gem_version(gem_version, version, options = {}) click to toggle source
# File lib/capistrano_sentinel/classes/gem_finder.rb, line 63
def verify_gem_version(gem_version, version, options = {})
  version = get_parsed_version(version)
  get_parsed_version(gem_version).send(options.fetch('operator', '<='), version)
end