Class: Gem::Commands::FetchCommand

Inherits:
Gem::Command show all
Includes:
LocalRemoteOptions, VersionOption
Defined in:
lib/rubygems/commands/fetch_command.rb

Instance Attribute Summary

Attributes inherited from Gem::Command

#command, #defaults, #options, #program_name, #summary

Instance Method Summary collapse

Methods included from VersionOption

#add_platform_option, #add_prerelease_option, #add_version_option

Methods included from LocalRemoteOptions

#accept_uri_http, #add_bulk_threshold_option, #add_clear_sources_option, #add_local_remote_options, #add_proxy_option, #add_source_option, #add_update_sources_option, #both?, #local?, #remote?

Methods inherited from Gem::Command

add_common_option, #add_extra_args, #add_option, add_specific_extra_args, #begins?, build_args, build_args=, common_options, #description, extra_args, extra_args=, #get_all_gem_names, #get_one_gem_name, #get_one_optional_argument, #handle_options, #handles?, #invoke, #merge_options, #remove_option, #show_help, #show_lookup_failure, specific_extra_args, specific_extra_args_hash, #when_invoked

Methods included from UserInteraction

#alert, #alert_error, #alert_warning, #ask, #ask_for_password, #ask_yes_no, #choose_from_list, #say, #terminate_interaction

Methods included from DefaultUserInteraction

ui, #ui, ui=, #ui=, use_ui, #use_ui

Constructor Details

#initialize ⇒ FetchCommand

Returns a new instance of FetchCommand.



10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/rubygems/commands/fetch_command.rb', line 10

def initialize
  super 'fetch', 'Download a gem and place it in the current directory'

  add_bulk_threshold_option
  add_proxy_option
  add_source_option
  add_clear_sources_option

  add_version_option
  add_platform_option
  add_prerelease_option
end

Instance Method Details

#arguments ⇒ Object

:nodoc:



23
24
25
 
# File 'lib/rubygems/commands/fetch_command.rb', line 23

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

#defaults_str ⇒ Object

:nodoc:



27
28
29
 
# File 'lib/rubygems/commands/fetch_command.rb', line 27

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

#execute ⇒ Object 



35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
# File 'lib/rubygems/commands/fetch_command.rb', line 35

def execute
  version = options[:version] || Gem::Requirement.default
  all = Gem::Requirement.default != version

  platform  = Gem.platforms.last
  gem_names = get_all_gem_names

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

    specs_and_sources, errors =
      Gem::SpecFetcher.fetcher.fetch_with_errors(dep, all, true,
                                                 dep.prerelease?)

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

    spec, source_uri = specs_and_sources.sort_by { |s,| s.version }.last

    if spec.nil? then
      show_lookup_failure gem_name, version, errors, options[:domain]
      next
    end

    file = "#{spec.full_name}.gem"
    remote_path = URI.parse(source_uri) + "gems/#{file}"

    fetch = Gem::RemoteFetcher.fetcher

    gem = fetch.fetch_path remote_path.to_s

    File.open file, "wb" do |f|
      f.write gem
    end

    say "Downloaded #{spec.full_name}"
  end
end

#usage ⇒ Object

:nodoc:



31
32
33
 
# File 'lib/rubygems/commands/fetch_command.rb', line 31

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