/
gem_helpers.rb
117 lines (98 loc) · 4.08 KB
/
gem_helpers.rb
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# frozen_string_literal: true
module Bundler
module GemHelpers
GENERIC_CACHE = { Gem::Platform::RUBY => Gem::Platform::RUBY } # rubocop:disable Style/MutableConstant
GENERICS = [
[Gem::Platform.new("java"), Gem::Platform.new("java")],
[Gem::Platform.new("mswin32"), Gem::Platform.new("mswin32")],
[Gem::Platform.new("mswin64"), Gem::Platform.new("mswin64")],
[Gem::Platform.new("universal-mingw32"), Gem::Platform.new("universal-mingw32")],
[Gem::Platform.new("x64-mingw32"), Gem::Platform.new("x64-mingw32")],
[Gem::Platform.new("x86_64-mingw32"), Gem::Platform.new("x64-mingw32")],
[Gem::Platform.new("x64-mingw-ucrt"), Gem::Platform.new("x64-mingw-ucrt")],
[Gem::Platform.new("mingw32"), Gem::Platform.new("x86-mingw32")],
].freeze
def generic(p)
GENERIC_CACHE[p] ||= begin
_, found = GENERICS.find do |match, _generic|
p.os == match.os && (!match.cpu || p.cpu == match.cpu)
end
found || Gem::Platform::RUBY
end
end
module_function :generic
def generic_local_platform
generic(local_platform)
end
module_function :generic_local_platform
def local_platform
Bundler.local_platform
end
module_function :local_platform
def platform_specificity_match(spec_platform, user_platform)
spec_platform = Gem::Platform.new(spec_platform)
PlatformMatch.specificity_score(spec_platform, user_platform)
end
module_function :platform_specificity_match
def select_best_platform_match(specs, platform)
matching = specs.select {|spec| spec.match_platform(platform) }
sort_best_platform_match(matching, platform)
end
module_function :select_best_platform_match
def sort_best_platform_match(matching, platform)
exact = matching.select {|spec| spec.platform == platform }
return exact if exact.any?
sorted_matching = matching.sort_by {|spec| platform_specificity_match(spec.platform, platform) }
exemplary_spec = sorted_matching.first
sorted_matching.take_while {|spec| same_specificity(platform, spec, exemplary_spec) && same_deps(spec, exemplary_spec) }
end
module_function :sort_best_platform_match
class PlatformMatch
def self.specificity_score(spec_platform, user_platform)
return -1 if spec_platform == user_platform
return 1_000_000 if spec_platform.nil? || spec_platform == Gem::Platform::RUBY || user_platform == Gem::Platform::RUBY
os_match(spec_platform, user_platform) +
cpu_match(spec_platform, user_platform) * 10 +
platform_version_match(spec_platform, user_platform) * 100
end
def self.os_match(spec_platform, user_platform)
if spec_platform.os == user_platform.os
0
else
1
end
end
def self.cpu_match(spec_platform, user_platform)
if spec_platform.cpu == user_platform.cpu
0
elsif spec_platform.cpu == "arm" && user_platform.cpu.to_s.start_with?("arm")
0
elsif spec_platform.cpu.nil? || spec_platform.cpu == "universal"
1
else
2
end
end
def self.platform_version_match(spec_platform, user_platform)
if spec_platform.version == user_platform.version
0
elsif spec_platform.version.nil?
1
else
2
end
end
end
def same_specificity(platform, spec, exemplary_spec)
platform_specificity_match(spec.platform, platform) == platform_specificity_match(exemplary_spec.platform, platform)
end
module_function :same_specificity
def same_deps(spec, exemplary_spec)
same_runtime_deps = spec.dependencies.sort == exemplary_spec.dependencies.sort
return same_runtime_deps unless spec.is_a?(Gem::Specification) && exemplary_spec.is_a?(Gem::Specification)
same_metadata_deps = spec.required_ruby_version == exemplary_spec.required_ruby_version && spec.required_rubygems_version == exemplary_spec.required_rubygems_version
same_runtime_deps && same_metadata_deps
end
module_function :same_deps
end
end