Class: Pups::ReplaceCommand

Inherits:
Command
  • Object
show all
Defined in:
lib/pups/replace_command.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Command

#interpolate_params, interpolate_params, run

Constructor Details

#initialize(params) ⇒ ReplaceCommand

Returns a new instance of ReplaceCommand.



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# File 'lib/pups/replace_command.rb', line 23

def initialize(params)
  @params = params
end

Instance Attribute Details

#direction ⇒ Object

Returns the value of attribute direction.



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# File 'lib/pups/replace_command.rb', line 5

def direction
  @direction
end

#filename ⇒ Object

Returns the value of attribute filename.



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# File 'lib/pups/replace_command.rb', line 5

def filename
  @filename
end

#from ⇒ Object

Returns the value of attribute from.



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# File 'lib/pups/replace_command.rb', line 5

def from
  @from
end

#global ⇒ Object

Returns the value of attribute global.



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# File 'lib/pups/replace_command.rb', line 5

def global
  @global
end

#text ⇒ Object

Returns the value of attribute text.



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# File 'lib/pups/replace_command.rb', line 5

def text
  @text
end

#to ⇒ Object

Returns the value of attribute to.



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# File 'lib/pups/replace_command.rb', line 5

def to
  @to
end

Class Method Details

.from_hash(hash, params) ⇒ Object 



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# File 'lib/pups/replace_command.rb', line 7

def self.from_hash(hash, params)
  replacer = new(params)
  replacer.from = guess_replace_type(hash['from'])
  replacer.to = guess_replace_type(hash['to'])
  replacer.text = File.read(hash['filename'])
  replacer.filename = hash['filename']
  replacer.direction = hash['direction'].to_sym if hash['direction']
  replacer.global = hash['global'].to_s == 'true'
  replacer
end

.guess_replace_type(item) ⇒ Object 



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# File 'lib/pups/replace_command.rb', line 18

def self.guess_replace_type(item)
  # evaling to get all the regex flags easily
  item[0] == '/' ? eval(item) : item
end

Instance Method Details

#replaced_text ⇒ Object 



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# File 'lib/pups/replace_command.rb', line 27

def replaced_text
  new_to = to
  new_to = interpolate_params(to) if to.is_a?(String)
  if global
    text.gsub(from, new_to)
  elsif direction == :reverse
    index = text.rindex(from)
    text[0..index - 1] << text[index..-1].sub(from, new_to)
  else
    text.sub(from, new_to)
  end
end

#run ⇒ Object 



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# File 'lib/pups/replace_command.rb', line 40

def run
  Pups.log.info("Replacing #{from} with #{to} in #{filename}")
  File.open(filename, 'w') { |f| f.write replaced_text }
end