mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
94 lines
2.5 KiB
Ruby
94 lines
2.5 KiB
Ruby
# frozen_string_literal: true
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require_relative '../command'
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require_relative '../local_remote_options'
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require_relative '../version_option'
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class Gem::Commands::FetchCommand < Gem::Command
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include Gem::LocalRemoteOptions
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include Gem::VersionOption
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def initialize
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defaults = {
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:suggest_alternate => true,
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:version => Gem::Requirement.default,
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}
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super 'fetch', 'Download a gem and place it in the current directory', defaults
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add_bulk_threshold_option
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add_proxy_option
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add_source_option
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add_clear_sources_option
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add_version_option
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add_platform_option
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add_prerelease_option
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add_option '--[no-]suggestions', 'Suggest alternates when gems are not found' do |value, options|
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options[:suggest_alternate] = value
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end
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end
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def arguments # :nodoc:
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'GEMNAME name of gem to download'
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end
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def defaults_str # :nodoc:
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"--version '#{Gem::Requirement.default}'"
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end
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def description # :nodoc:
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<<-EOF
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The fetch command fetches gem files that can be stored for later use or
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unpacked to examine their contents.
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See the build command help for an example of unpacking a gem, modifying it,
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then repackaging it.
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EOF
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end
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def usage # :nodoc:
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"#{program_name} GEMNAME [GEMNAME ...]"
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end
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def check_version # :nodoc:
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if options[:version] != Gem::Requirement.default and
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get_all_gem_names.size > 1
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alert_error "Can't use --version with multiple gems. You can specify multiple gems with" \
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" version requirements using `gem fetch 'my_gem:1.0.0' 'my_other_gem:~>2.0.0'`"
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terminate_interaction 1
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end
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end
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def execute
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check_version
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version = options[:version]
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platform = Gem.platforms.last
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gem_names = get_all_gem_names_and_versions
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gem_names.each do |gem_name, gem_version|
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gem_version ||= version
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dep = Gem::Dependency.new gem_name, gem_version
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dep.prerelease = options[:prerelease]
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suppress_suggestions = !options[:suggest_alternate]
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specs_and_sources, errors =
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Gem::SpecFetcher.fetcher.spec_for_dependency dep
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if platform
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filtered = specs_and_sources.select {|s,| s.platform == platform }
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specs_and_sources = filtered unless filtered.empty?
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end
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spec, source = specs_and_sources.max_by {|s,| s }
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if spec.nil?
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show_lookup_failure gem_name, gem_version, errors, suppress_suggestions, options[:domain]
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next
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end
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source.download spec
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say "Downloaded #{spec.full_name}"
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end
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end
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end
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