Class: Gem::Commands::OrphanedCommand

Inherits:
Gem::Command
  • Object
show all
Defined in:
lib/gem-orphaned/orphaned_command.rb,
lib/gem-orphaned/version.rb

Constant Summary collapse

PreferredGemsFile = 
File.expand_path('~/.preferred_gems')
DefaultPreferredGems = 
%w{
  bundler
  gem-orphaned
  rubygems-update
}
VERSION = 
'0.4'

Instance Method Summary collapse

Constructor Details

#initialize ⇒ OrphanedCommand

Returns a new instance of OrphanedCommand.



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# File 'lib/gem-orphaned/orphaned_command.rb', line 12

def initialize
  super 'orphaned', 'Show orphaned gems'
end

Instance Method Details

#check_preferred_gems ⇒ Object 



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# File 'lib/gem-orphaned/orphaned_command.rb', line 42

def check_preferred_gems
  @preferred_gems.each do |name|
    unless @gems[name]
      puts "#{name}: in preferred list but not installed"
    end
  end
end

#default_gems ⇒ Object 



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# File 'lib/gem-orphaned/orphaned_command.rb', line 56

def default_gems
  @gems.select do |name, specs|
    specs.find(&:default_gem?)
  end.keys
end

#execute ⇒ Object 



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# File 'lib/gem-orphaned/orphaned_command.rb', line 16

def execute
  read_gems
  read_preferred_gems
  check_preferred_gems
  show_orphaned_gems
end

#orphaned_gems ⇒ Object 



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# File 'lib/gem-orphaned/orphaned_command.rb', line 62

def orphaned_gems
  names = @gems.keys - @preferred_gems
  @gems.values_at(*names).map do |specs|
    specs.select { |s| s.dependent_gems.empty? }
  end.flatten
end

#read_gems ⇒ Object 



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# File 'lib/gem-orphaned/orphaned_command.rb', line 23

def read_gems
  @gems = {}
  Gem::Specification.each do |spec|
    @gems[spec.name] ||= []
    @gems[spec.name] << spec
  end
end

#read_preferred_gems ⇒ Object 



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# File 'lib/gem-orphaned/orphaned_command.rb', line 31

def read_preferred_gems
  @preferred_gems = DefaultPreferredGems
  @preferred_gems += default_gems
  if File.exist?(PreferredGemsFile)
    data = File.read(PreferredGemsFile)
    lines = data.split("\n").map { |s| s.sub(/#.*/, '').strip }.reject(&:empty?)
    @preferred_gems += lines
  end
  @preferred_gems.uniq!
end

#show_orphaned_gems ⇒ Object 



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# File 'lib/gem-orphaned/orphaned_command.rb', line 50

def show_orphaned_gems
  orphaned_gems.each do |spec|
    puts "#{spec.name} (#{spec.version}): orphaned"
  end
end