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require "uri"
require "rubygems/spec_fetcher"
module Bundler
# Represents a lazily loaded gem specification, where the full specification
# is on the source server in rubygems' "quick" index. The proxy object is to
# be seeded with what we're given from the source's abbreviated index - the
# full specification will only be fetched when necessary.
class RemoteSpecification
include MatchPlatform
include Comparable
attr_reader :name, :version, :platform
attr_accessor :source, :remote
def initialize(name, version, platform, spec_fetcher)
@name = name
@version = Gem::Version.create version
@platform = platform
@spec_fetcher = spec_fetcher
end
# Needed before installs, since the arch matters then and quick
# specs don't bother to include the arch in the platform string
def fetch_platform
@platform = _remote_specification.platform
end
def full_name
if platform == Gem::Platform::RUBY || platform.nil?
"#{@name}-#{@version}"
else
"#{@name}-#{@version}-#{platform}"
end
end
# Compare this specification against another object. Using sort_obj
# is compatible with Gem::Specification and other Bundler or RubyGems
# objects. Otherwise, use the default Object comparison.
def <=>(other)
if other.respond_to?(:sort_obj)
sort_obj <=> other.sort_obj
else
super
end
end
# Because Rubyforge cannot be trusted to provide valid specifications
# once the remote gem is downloaded, the backend specification will
# be swapped out.
def __swap__(spec)
@_remote_specification = spec
end
# Create a delegate used for sorting. This strategy is copied from
# RubyGems 2.23 and ensures that Bundler's specifications can be
# compared and sorted with RubyGems' own specifications.
#
# @see #<=>
# @see Gem::Specification#sort_obj
#
# @return [Array] an object you can use to compare and sort this
# specification against other specifications
def sort_obj
[@name, @version, @platform == Gem::Platform::RUBY ? -1 : 1]
end
private
def _remote_specification
@_remote_specification ||= @spec_fetcher.fetch_spec([@name, @version, @platform])
@_remote_specification || raise(GemspecError, "Gemspec data for #{full_name} was" \
" missing from the server! Try installing with `--full-index` as a workaround.")
end
def method_missing(method, *args, &blk)
if Gem::Specification.new.respond_to?(method)
_remote_specification.send(method, *args, &blk)
else
super
end
end
end
end
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