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require "set"
module Bundler
class Index
include Enumerable
def self.build
i = new
yield i
i
end
attr_reader :specs, :all_specs, :sources
protected :specs, :all_specs
RUBY = "ruby".freeze
NULL = "\0".freeze
def initialize
@sources = []
@cache = {}
@specs = Hash.new {|h, k| h[k] = {} }
@all_specs = Hash.new {|h, k| h[k] = [] }
end
def initialize_copy(o)
super
@sources = @sources.dup
@cache = {}
@specs = Hash.new {|h, k| h[k] = {} }
@all_specs = Hash.new {|h, k| h[k] = [] }
o.specs.each do |name, hash|
@specs[name] = hash.dup
end
o.all_specs.each do |name, array|
@all_specs[name] = array.dup
end
end
def inspect
"#<#{self.class}:0x#{object_id} sources=#{sources.map(&:inspect)} specs.size=#{specs.size}>"
end
def empty?
each { return false }
true
end
def search_all(name)
all_matches = @all_specs[name] + local_search(name)
@sources.each do |source|
all_matches.concat(source.search_all(name))
end
all_matches
end
# Search this index's specs, and any source indexes that this index knows
# about, returning all of the results.
def search(query, base = nil)
results = local_search(query, base)
seen = Set.new(results.map {|spec| [spec.name, spec.version, spec.platform] })
@sources.each do |source|
source.search(query, base).each do |spec|
lookup = [spec.name, spec.version, spec.platform]
unless seen.include?(lookup)
results << spec
seen << lookup
end
end
end
results.sort_by {|s| [s.version, s.platform.to_s == RUBY ? NULL : s.platform.to_s] }
end
def local_search(query, base = nil)
case query
when Gem::Specification, RemoteSpecification, LazySpecification, EndpointSpecification then search_by_spec(query)
when String then specs_by_name(query)
when Gem::Dependency then search_by_dependency(query, base)
when DepProxy then search_by_dependency(query.dep, base)
else
raise "You can't search for a #{query.inspect}."
end
end
alias_method :[], :search
def <<(spec)
@specs[spec.name]["#{spec.version}-#{spec.platform}"] = spec
spec
end
def each(&blk)
specs.values.each do |spec_sets|
spec_sets.values.each(&blk)
end
end
# returns a list of the dependencies
def unmet_dependency_names
names = dependency_names
names.delete_if {|n| n == "bundler" }
names.select {|n| search(n).empty? }
end
def dependency_names
names = []
each {|s| names.push(*s.dependencies.map(&:name)) }
names.uniq
end
def use(other, override_dupes = false)
return unless other
other.each do |s|
if (dupes = search_by_spec(s)) && dupes.any?
@all_specs[s.name] = [s] + dupes
next unless override_dupes
self << s
end
self << s
end
self
end
def size
@sources.inject(@specs.size) do |size, source|
size += source.size
end
end
def ==(other)
all? do |spec|
other_spec = other[spec].first
other_spec && (spec.dependencies & other_spec.dependencies).empty? && spec.source == other_spec.source
end
end
def add_source(index)
raise ArgumentError, "Source must be an index, not #{index.class}" unless index.is_a?(Index)
@sources << index
@sources.uniq! # need to use uniq! here instead of checking for the item before adding
end
private
def specs_by_name(name)
@specs[name].values
end
def search_by_dependency(dependency, base = nil)
@cache[base || false] ||= {}
@cache[base || false][dependency] ||= begin
specs = specs_by_name(dependency.name) + (base || [])
found = specs.select do |spec|
if base # allow all platforms when searching from a lockfile
dependency.matches_spec?(spec)
else
dependency.matches_spec?(spec) && Gem::Platform.match(spec.platform)
end
end
wants_prerelease = dependency.requirement.prerelease?
only_prerelease = specs.all? {|spec| spec.version.prerelease? }
unless wants_prerelease || only_prerelease
found.reject! {|spec| spec.version.prerelease? }
end
found
end
end
def search_by_spec(spec)
spec = @specs[spec.name]["#{spec.version}-#{spec.platform}"]
spec ? [spec] : []
end
if RUBY_VERSION < "1.9"
def same_version?(a, b)
regex = /^(.*?)(?:\.0)*$/
a.to_s[regex, 1] == b.to_s[regex, 1]
end
else
def same_version?(a, b)
a == b
end
end
def spec_satisfies_dependency?(spec, dep)
return false unless dep.name == spec.name
dep.requirement.satisfied_by?(spec.version)
end
end
end
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