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Edit File : fetch_command.rb \| Size : 2.65 KB
# frozen_string_literal: true require_relative "../command" require_relative "../local_remote_options" require_relative "../version_option" class Gem::Commands::FetchCommand < Gem::Command include Gem::LocalRemoteOptions include Gem::VersionOption def initialize defaults = { suggest_alternate: true, version: Gem::Requirement.default, } super "fetch", "Download a gem and place it in the current directory", defaults add_bulk_threshold_option add_proxy_option add_source_option add_clear_sources_option add_version_option add_platform_option add_prerelease_option add_option "--[no-]suggestions", "Suggest alternates when gems are not found" do \|value, options\| options[:suggest_alternate] = value end end def arguments # :nodoc: "GEMNAME name of gem to download" end def defaults_str # :nodoc: "--version '#{Gem::Requirement.default}'" end def description # :nodoc: <<-EOF The fetch command fetches gem files that can be stored for later use or unpacked to examine their contents. See the build command help for an example of unpacking a gem, modifying it, then repackaging it. EOF end def usage # :nodoc: "#{program_name} GEMNAME [GEMNAME ...]" end def check_version # :nodoc: if options[:version] != Gem::Requirement.default && get_all_gem_names.size > 1 alert_error "Can't use --version with multiple gems. You can specify multiple gems with" \ " version requirements using `gem fetch 'my_gem:1.0.0' 'my_other_gem:~>2.0.0'`" terminate_interaction 1 end end def execute check_version exit_code = fetch_gems terminate_interaction exit_code end private def fetch_gems exit_code = 0 version = options[:version] platform = Gem.platforms.last gem_names = get_all_gem_names_and_versions gem_names.each do \|gem_name, gem_version\| gem_version \|\|= version dep = Gem::Dependency.new gem_name, gem_version dep.prerelease = options[:prerelease] suppress_suggestions = !options[:suggest_alternate] specs_and_sources, errors = Gem::SpecFetcher.fetcher.spec_for_dependency dep if platform filtered = specs_and_sources.select {\|s,\| s.platform == platform } specs_and_sources = filtered unless filtered.empty? end spec, source = specs_and_sources.max_by {\|s,\| s } if spec.nil? show_lookup_failure gem_name, gem_version, errors, suppress_suggestions, options[:domain] exit_code \|= 2 next end source.download spec say "Downloaded #{spec.full_name}" end exit_code end end Back

Edit File : fetch_command.rb | Size : 2.65 KB

# frozen_string_literal: true

require_relative "../command"
require_relative "../local_remote_options"
require_relative "../version_option"

class Gem::Commands::FetchCommand < Gem::Command
  include Gem::LocalRemoteOptions
  include Gem::VersionOption

def initialize
    defaults = {
      suggest_alternate: true,
      version: Gem::Requirement.default,
    }

super "fetch", "Download a gem and place it in the current directory", defaults

add_bulk_threshold_option
    add_proxy_option
    add_source_option
    add_clear_sources_option

add_version_option
    add_platform_option
    add_prerelease_option

add_option "--[no-]suggestions", "Suggest alternates when gems are not found" do |value, options|
      options[:suggest_alternate] = value
    end
  end

def arguments # :nodoc:
    "GEMNAME       name of gem to download"
  end

def defaults_str # :nodoc:
    "--version '#{Gem::Requirement.default}'"
  end

def description # :nodoc:
    <<-EOF
The fetch command fetches gem files that can be stored for later use or
unpacked to examine their contents.

See the build command help for an example of unpacking a gem, modifying it,
then repackaging it.
    EOF
  end

def usage # :nodoc:
    "#{program_name} GEMNAME [GEMNAME ...]"
  end

def check_version # :nodoc:
    if options[:version] != Gem::Requirement.default &&
       get_all_gem_names.size > 1
      alert_error "Can't use --version with multiple gems. You can specify multiple gems with" \
                  " version requirements using `gem fetch 'my_gem:1.0.0' 'my_other_gem:~>2.0.0'`"
      terminate_interaction 1
    end
  end

def execute
    check_version

exit_code = fetch_gems

terminate_interaction exit_code
  end

private

def fetch_gems
    exit_code = 0

version = options[:version]

platform  = Gem.platforms.last
    gem_names = get_all_gem_names_and_versions

gem_names.each do |gem_name, gem_version|
      gem_version ||= version
      dep = Gem::Dependency.new gem_name, gem_version
      dep.prerelease = options[:prerelease]
      suppress_suggestions = !options[:suggest_alternate]

specs_and_sources, errors =
        Gem::SpecFetcher.fetcher.spec_for_dependency dep

if platform
        filtered = specs_and_sources.select {|s,| s.platform == platform }
        specs_and_sources = filtered unless filtered.empty?
      end

spec, source = specs_and_sources.max_by {|s,| s }

if spec.nil?
        show_lookup_failure gem_name, gem_version, errors, suppress_suggestions, options[:domain]
        exit_code |= 2
        next
      end
      source.download spec
      say "Downloaded #{spec.full_name}"
    end

exit_code
  end
end

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