class CapistranoSentinel::GemFinder
helper used to determine gem versions
Public Class Methods
capistrano_version_2?()
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# 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)
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# 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)
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# 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')
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# 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)
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# 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()
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# 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)
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# 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)
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# 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)
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# 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 = {})
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# 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