Class: Gem::Commands::ExportCommand

Inherits:
Gem::Command
  • Object
show all
Defined in:
lib/rubygems/commands/export_command.rb

Overview

An alternate to Gem::Commands::QueryCommand that searches for gems starting with the the supplied argument.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ExportCommand

Returns a new instance of ExportCommand.



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# File 'lib/rubygems/commands/export_command.rb', line 9

def initialize
  super 'export', 'Dumps your currently installed gems into yaml'
end

Instance Method Details

#arguments ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/export_command.rb', line 13

def arguments # :nodoc:
  "GEMFILE        location to save the export to"
end

#defaults_str ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/export_command.rb', line 17

def defaults_str # :nodoc:
  ""
end

#execute ⇒ Object 



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# File 'lib/rubygems/commands/export_command.rb', line 25

def execute

  export_file = get_one_optional_argument

  unless export_file then
    raise Gem::CommandLineError,
          "Please specify a file to save the export to"
  end    
  
  dep = Gem::Dependency.new //, Gem::Requirement.default
  specs = Gem.source_index.search dep

  gems = []

  specs.map do |spec|
    gems << { 
        :name             => spec.name, 
        :version          => spec.version.to_s,
        :install_options  => '' 
      }
  end

  output = {'sources' => Gem.sources, 'gems' => gems}
  
  File.open(export_file, 'w') do |f|
    f.write output.to_yaml
  end
end

#usage ⇒ Object

:nodoc:



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# File 'lib/rubygems/commands/export_command.rb', line 21

def usage # :nodoc:
  "#{program_name} GEMFILE"
end