Class: Synvert::Core::Rewriter::GemSpec

Inherits:
Object
  • Object
show all
Defined in:
lib/synvert/core/rewriter/gem_spec.rb

Overview

GemSpec checks and compares gem version.

Constant Summary collapse

OPERATORS = 
{ eq: '==', lt: '<', gt: '>', lte: '<=', gte: '>=', ne: '!=' }.freeze

Instance Method Summary collapse

Constructor Details

#initialize(name, comparator) ⇒ GemSpec

Initialize a gem_spec.

Parameters:

  • name (String) —

    gem name

  • comparator (Hash) —

    comparator to gem version, e.g. ‘2.0.0’, comparator key can be eq, lt, gt, lte, gte or ne.



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# File 'lib/synvert/core/rewriter/gem_spec.rb', line 13

def initialize(name, comparator)
  @name = name
  if comparator.is_a?(Hash)
    @operator = comparator.keys.first
    @version = Gem::Version.new comparator.values.first
  else
    @operator = :eq
    @version = Gem::Version.new comparator
  end
end

Instance Method Details

#match? ⇒ Boolean

Check if the specified gem version in Gemfile.lock matches gem_spec comparator.

Returns:

  • (Boolean) —

    true if matches, otherwise false.

Raises:



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# File 'lib/synvert/core/rewriter/gem_spec.rb', line 28

def match?
  gemfile_lock_path = File.join(Configuration.path, 'Gemfile.lock')

  # if Gemfile.lock does not exist, just ignore this check
  return true unless File.exist?(gemfile_lock_path)

  ENV['BUNDLE_GEMFILE'] = Configuration.path # make sure bundler reads Gemfile.lock in the correct path
  parser = Bundler::LockfileParser.new(File.read(gemfile_lock_path))
  if spec = parser.specs.find { |spec| spec.name == @name }
    Gem::Version.new(spec.version).send(OPERATORS[@operator], @version)
  else
    false
  end
end