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Class: Bundler::EnvironmentPreserver

Relationships & Source Files
Inherits: Object
Defined in: lib/bundler/environment_preserver.rb

Constant Summary

Class Method Summary

Instance Method Summary

Constructor Details

.new(env, keys) ⇒ EnvironmentPreserver

Parameters:

  • env (Hash)
  • keys (Array<String>)
[ GitHub ] 

  


# File 'lib/bundler/environment_preserver.rb', line 27



def initialize(env, keys)
  @original = env
  @keys = keys
  @prefix = BUNDLER_PREFIX
end


  







Class Method Details



  

    .from_env  
  

  [ GitHub ]


  

  


# File 'lib/bundler/environment_preserver.rb', line 21



def self.from_env
  new(ENV.to_hash, BUNDLER_KEYS)
end


  







Instance Method Details



  

    #backup  ⇒ Hash 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/bundler/environment_preserver.rb', line 39



def backup
  env = @original.clone
  @keys.each do |key|
    value = env[key]
    if !value.nil?
      env[@prefix + key] ||= value
    else
      env[@prefix + key] ||= INTENTIONALLY_NIL
    end
  end
  env
end


  








  

    #replace_with_backup  
  



  

    

Replaces ENV with the bundler environment variables backed up


  



  [ GitHub ]


  

  


# File 'lib/bundler/environment_preserver.rb', line 34



def replace_with_backup
  ENV.replace(backup)
end


  








  

    #restore  ⇒ Hash 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/bundler/environment_preserver.rb', line 53



def restore
  env = @original.clone
  @keys.each do |key|
    value_original = env[@prefix + key]
    next if value_original.nil?
    if value_original == INTENTIONALLY_NIL
      env.delete(key)
    else
      env[key] = value_original
    end
    env.delete(@prefix + key)
  end
  env
end