def execute
if options[:reverse_dependencies] and remote? and not local? then
alert_error 'Only reverse dependencies for local gems are supported.'
terminate_interaction 1
end
options[:args] << '' if options[:args].empty?
pattern = if options[:args].length == 1 and
options[:args].first =~ /\A\/(.*)\/(i)?\z/m then
flags = $2 ? Regexp::IGNORECASE : nil
Regexp.new $1, flags
else
/\A#{Regexp.union(*options[:args])}/
end
dependency = Gem::Deprecate.skip_during {
Gem::Dependency.new pattern, options[:version]
}
dependency.prerelease = options[:prerelease]
specs = []
specs.concat dependency.matching_specs if local?
if remote? and not options[:reverse_dependencies] then
fetcher = Gem::SpecFetcher.fetcher
specs_and_sources = fetcher.find_matching(dependency,
dependency.specific?, true,
dependency.prerelease?)
specs.concat specs_and_sources.map { |spec_tuple, source_uri|
fetcher.fetch_spec spec_tuple, URI.parse(source_uri)
}
end
if specs.empty? then
patterns = options[:args].join ','
say "No gems found matching #{patterns} (#{options[:version]})" if
Gem.configuration.verbose
terminate_interaction 1
end
specs = specs.uniq.sort
reverse = Hash.new { |h, k| h[k] = [] }
if options[:reverse_dependencies] then
specs.each do |spec|
reverse[spec.full_name] = find_reverse_dependencies spec
end
end
if options[:pipe_format] then
specs.each do |spec|
unless spec.dependencies.empty?
spec.dependencies.sort_by { |dep| dep.name }.each do |dep|
say "#{dep.name} --version '#{dep.requirement}'"
end
end
end
else
response = ''
specs.each do |spec|
response << print_dependencies(spec)
unless reverse[spec.full_name].empty? then
response << " Used by\n"
reverse[spec.full_name].each do |sp, dep|
response << " #{sp} (#{dep})\n"
end
end
response << "\n"
end
say response
end
end