Class: Wukong::Deploy::Differ

Inherits:
Object
  • Object
show all
Defined in:
lib/wukong-deploy/templater/differ.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(new_content, existing_content) ⇒ Differ

Returns a new instance of Differ.



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# File 'lib/wukong-deploy/templater/differ.rb', line 10

def initialize new_content, existing_content
  self.new_content      = new_content
  self.existing_content = existing_content
end

Instance Attribute Details

#existing_content ⇒ Object

Returns the value of attribute existing_content.



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# File 'lib/wukong-deploy/templater/differ.rb', line 8

def existing_content
  @existing_content
end

#new_content ⇒ Object

Returns the value of attribute new_content.



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# File 'lib/wukong-deploy/templater/differ.rb', line 7

def new_content
  @new_content
end

Instance Method Details

#always_replace? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wukong-deploy/templater/differ.rb', line 19

def always_replace?
  @always_replace
end

#diff ⇒ Object 



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# File 'lib/wukong-deploy/templater/differ.rb', line 43

def diff
  @diff = Diffy::Diff.new(new_content, existing_content, :allow_empty_diff => true, :diff => "-U 5", :include_diff_info => true)
end

#get_response ⇒ Object 



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# File 'lib/wukong-deploy/templater/differ.rb', line 65

def get_response
  STDOUT.write '  Overwrite? (enter "h" for help) [YNynqdh]: '
  begin
    response = STDIN.readline.chomp.strip
  rescue EOFError, Interrupt => e
    exit(1)
  end
  case
  when response =~ /^(y|n|Y|N)/
    response
  when response =~ /^q/i
    exit(1)
  when response =~ /^d/i
    show_diff
    get_response
  when response =~ /^h/i
    show_help
    get_response
  else
    get_response
  end
end

#never_replace? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wukong-deploy/templater/differ.rb', line 23

def never_replace?
  @never_replace
end

#replace? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wukong-deploy/templater/differ.rb', line 15

def replace?
  @replace
end

#resolve! ⇒ Object 



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# File 'lib/wukong-deploy/templater/differ.rb', line 27

def resolve!
  response = get_response
  case response
  when /^y/
    @replace        = true
  when /^Y/
    @replace        = true
    @always_replace = true
  when /^n/
    @replace        = false
  when /^N/
    @replace        = false
    @never_replace  = true
  end
end

#show_diff ⇒ Object 



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# File 'lib/wukong-deploy/templater/differ.rb', line 47

def show_diff
  puts ''
  diff.each do |line|
    puts "    #{line}"
  end
  puts ''
end

#show_help ⇒ Object 



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# File 'lib/wukong-deploy/templater/differ.rb', line 55

def show_help
  puts "    Y - yes, overwrite this file and all other conflicts"
  puts "    y - yes, overwrite this file"
  puts "    N - no, skip this file and all other conflicts"
  puts "    n - no, skip this file"
  puts "    d - diff, show the differences between the existing file and the new file"
  puts "    q - quit, abort"
  puts "    h - help, show this help"
end