Module: Tap::Generator::Destroy

Defined in:
lib/tap/generator/destroy.rb

Overview

:startdoc::module A mixin defining how to run manifest actions in reverse.

Instance Method Summary collapse

Instance Method Details

#action ⇒ Object

Returns :destroy



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# File 'lib/tap/generator/destroy.rb', line 59

def action
  :destroy
end

#directory(target, options = {}) ⇒ Object

Removes the target directory if it exists. Missing, non-directory and non-empty targets are simply logged and not removed. When pretend is true, removal is logged but does not actually happen.

No options currently affect the behavior of this method.



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# File 'lib/tap/generator/destroy.rb', line 19

def directory(target, options={})
  target = File.expand_path(target)
  
  case
  when !File.exists?(target)
    log_relative :missing, target
  when !File.directory?(target)
    log_relative 'not a directory', target
  when !Root::Utils.empty?(target)
    log_relative 'not empty', target
  else
    log_relative :rm, target
    FileUtils.rmdir(target) unless pretend
  end
  
  target
end

#file(target, options = {}) ⇒ Object

Removes the target file if it exists. Missing and non-file and targets are simply logged and not removed. When pretend is true, removal is logged but does not actually happen.

No options currently affect the behavior of this method.



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# File 'lib/tap/generator/destroy.rb', line 42

def file(target, options={})
  target = File.expand_path(target)
  
  case
  when File.file?(target)
    log_relative :rm, target
    FileUtils.rm(target) unless pretend
  when File.directory?(target)
    log_relative 'not a file', target
  else
    log_relative :missing, target
  end
  
  target
end

#iterate(actions) ⇒ Object

Iterates over the actions in reverse, and collects the results.



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# File 'lib/tap/generator/destroy.rb', line 8

def iterate(actions)
  results = []
  actions.reverse_each {|action| results << yield(action) }
  results
end