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module Bundler
class Index
def self.from_installed_gems
Source::SystemGems.new.specs
end
def initialize
@cache = {}
@specs = Hash.new { |h,k| h[k] = [] }
end
def initialize_copy(o)
super
@cache = {}
@specs = Hash.new { |h,k| h[k] = [] }
merge!(o)
end
def empty?
@specs.values.flatten.empty?
end
def search(query)
case query
when Gem::Specification, RemoteSpecification then search_by_spec(query)
when String then @specs[query]
else search_by_dependency(query)
end
end
alias [] search
def <<(spec)
arr = @specs[spec.name]
arr.delete_if do |s|
s.version == spec.version && s.platform == spec.platform
end
arr << spec
spec
end
def each
@specs.values.flatten.each do |spec|
yield spec
end
end
def merge!(other)
other.each do |spec|
self << spec
end
self
end
def merge(other)
dup.merge!(other)
end
def freeze
@specs.each do |k,v|
v.freeze
end
super
end
private
def search_by_spec(spec)
@specs[spec.name].select { |s| s.version == spec.version }
end
def search_by_dependency(dependency)
@cache[dependency.hash] ||= begin
specs = @specs[dependency.name]
wants_prerelease = dependency.version_requirements.prerelease?
only_prerelease = specs.all? {|spec| spec.version.prerelease? }
found = specs.select { |spec| dependency =~ spec }
unless wants_prerelease || only_prerelease
found.reject! { |spec| spec.version.prerelease? }
end
found.sort_by {|s| [s.version, s.platform.to_s == 'ruby' ? "\0" : s.platform.to_s] }
end
end
end
end
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