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Diffstat (limited to 'lib/rubygems/resolver/vendor_set.rb')
-rw-r--r-- | lib/rubygems/resolver/vendor_set.rb | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/lib/rubygems/resolver/vendor_set.rb b/lib/rubygems/resolver/vendor_set.rb new file mode 100644 index 0000000000..e9cbcd8303 --- /dev/null +++ b/lib/rubygems/resolver/vendor_set.rb @@ -0,0 +1,66 @@ +## +# A VendorSet represents gems that have been unpacked into a specific +# directory that contains a gemspec. +# +# This is used for gem dependency file support. +# +# Example: +# +# set = Gem::Resolver::VendorSet.new +# +# set.add_vendor_gem 'rake', 'vendor/rake' +# +# The directory vendor/rake must contain an unpacked rake gem along with a +# rake.gemspec (watching the given name). + +class Gem::Resolver::VendorSet < Gem::Resolver::Set + + def initialize # :nodoc: + @directories = {} + @specs = {} + end + + ## + # Adds a specification to the set with the given +name+ which has been + # unpacked into the given +directory+. + + def add_vendor_gem name, directory # :nodoc: + gemspec = File.join directory, "#{name}.gemspec" + + spec = Gem::Specification.load gemspec + + raise Gem::GemNotFoundException, + "unable to find #{gemspec} for gem #{name}" unless spec + + key = "#{spec.name}-#{spec.version}-#{spec.platform}" + + @specs[key] = spec + @directories[spec] = directory + end + + ## + # Returns an Array of VendorSpecification objects matching the + # DependencyRequest +req+. + + def find_all req + @specs.values.select do |spec| + req.matches_spec? spec + end.map do |spec| + source = Gem::Source::Vendor.new @directories[spec] + Gem::Resolver::VendorSpecification.new self, spec, source + end + end + + ## + # Loads a spec with the given +name+, +version+ and +platform+. Since the + # +source+ is defined when the specification was added to index it is not + # used. + + def load_spec name, version, platform, source # :nodoc: + key = "#{name}-#{version}-#{platform}" + + @specs.fetch key + end + +end + |