Class: ENV

Inherits:
Object show all
Defined in:
lib/console/mux/env_with_merged.rb

Overview

Copyright © 2012 Common Ground Publishing

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Class Method Summary collapse

Class Method Details

.restore ⇒ Object

Not threadsafe. Save the current ENV, yield to the block, then restore the original ENV.



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# File 'lib/console/mux/env_with_merged.rb', line 34

def restore
  # save original values
  orig = ENV.to_hash
  
  begin
    yield
  ensure
    ENV.clear
    ENV.update(orig)
  end
end

.with_merged(hash) ⇒ Object

Merge the values from ‘hash` into the global ENV; yield the block; restore the original values of ENV.

Parameters:

  • hash (Hash) 


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# File 'lib/console/mux/env_with_merged.rb', line 26

def with_merged(hash)
  ENV.restore do
    ENV.update(hash)
    yield
  end
end