Class: Gem::Micro::SpecificationEmitter

Inherits:
Object
  • Object
show all
Defined in:
lib/microgem/specification_emitter.rb

Constant Summary collapse

SPECIAL_INSTANCE_VARIABLES = 
[
  'name',
  'mocha',
  'source',
  'version',
  'dependencies',
  'new_platform',
  'specification_version',
  'required_rubygems_version'
]

Instance Method Summary collapse

Constructor Details

#initialize(gem_spec) ⇒ SpecificationEmitter

Returns a new instance of SpecificationEmitter.



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# File 'lib/microgem/specification_emitter.rb', line 15

def initialize(gem_spec)
  @gem_spec = gem_spec
end

Instance Method Details

#format(obj) ⇒ Object

Properly formats objects so they can be written to a Ruby ‘.gemspec’ file.



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# File 'lib/microgem/specification_emitter.rb', line 32

def format(obj)
  case obj
  when Time
    obj.strftime("%Y-%m-%d")
  when Date, Gem::Version, Gem::Requirement
    obj.to_s
  else
    obj
  end
end

#gem_spec_variables ⇒ Object

Returns a list of all instance variables sorted by their keys.

gem_spec.gem_spec_variables # => [["author", ["Eloy Duran"]], ["version", "0.5.2"] …]



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# File 'lib/microgem/specification_emitter.rb', line 22

def gem_spec_variables
  @gem_spec.instance_variables.sort.map do |ivar|
    key = ivar[1..-1]
    next if SPECIAL_INSTANCE_VARIABLES.include?(key)
    value = format(ivar_get(key))
    [key, value]
  end.compact
end

#to_ruby ⇒ Object

Returns a Ruby syntax representation of the Specification which is used to generate the gemspec files that RubyGems uses to check for gems.

TODO: We are still missing the following values, but it might not be a real problem. So we need to figure out if they are important to RubyGems and if so where it gets these values from.

  • files

  • extra_rdoc_files

  • rdoc_options

  • test_files



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# File 'lib/microgem/specification_emitter.rb', line 54

def to_ruby
%{Gem::Specification.new do |s|
  s.name = "#{@gem_spec.name}"
  s.version = "#{@gem_spec.version}"

  s.specification_version = #{ ivar_get(:specification_version) || 2 } if s.respond_to? :specification_version=
  s.required_rubygems_version = Gem::Requirement.new("#{ivar_get(:required_rubygems_version) || '>= 0'}") if s.respond_to? :required_rubygems_version=

#{gem_spec_variables.map { |k,v| "  s.#{k} = #{v.inspect}" }.join("\n") }

#{@gem_spec.dependencies.map { |dep| "  s.add_dependency(\"#{dep.name}\", [\"#{dep.version_requirements.to_s}\"])" }.join("\n") }
end}
end