Class: Far::Replacer

Inherits:
Object
  • Object
show all
Defined in:
lib/far/replacer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(substitution, options) ⇒ Replacer

Returns a new instance of Replacer.



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# File 'lib/far/replacer.rb', line 6

def initialize(substitution, options)
  self.substitution = substitution
  @options          = Options.new options
  generate_change_report
end

Instance Attribute Details

#change_report ⇒ Object

Returns the value of attribute change_report.



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# File 'lib/far/replacer.rb', line 4

def change_report
  @change_report
end

#file_list ⇒ Object

Returns the value of attribute file_list.



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# File 'lib/far/replacer.rb', line 4

def file_list
  @file_list
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/far/replacer.rb', line 4

def options
  @options
end

#substitution ⇒ Object

Returns the value of attribute substitution.



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# File 'lib/far/replacer.rb', line 3

def substitution
  @substitution
end

Instance Method Details

#diff ⇒ Object 



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# File 'lib/far/replacer.rb', line 76

def diff
  files.each do |file|
    replacement_number = 0

    diff_file(file).lines.each_slice(2) do |slice|
      change_report[file.name][replacement_number][:changed] = slice[1]
      replacement_number += 1
    end
  end
end

#diff_file(file) ⇒ Object 



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# File 'lib/far/replacer.rb', line 71

def diff_file(file)
  original_version, changed_version = replace_file(file)
  Differ.diff_by_line(changed_version, original_version).format_as :plain
end

#dry_run? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/far/replacer.rb', line 51

def dry_run?
  !@options[:please].value || !@options[:replace].value
end

#files ⇒ Object 



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# File 'lib/far/replacer.rb', line 29

def files
  file_list.map { |file| File.new file, find }
end

#find ⇒ Object 



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# File 'lib/far/replacer.rb', line 17

def find
  @substitution.split('/')[1]
end

#generate_change_report ⇒ Object 



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# File 'lib/far/replacer.rb', line 55

def generate_change_report
  change_report
end

#in_place ⇒ Object 



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# File 'lib/far/replacer.rb', line 33

def in_place
  return "" if dry_run?
  return "-i ''"
end

#redirection ⇒ Object 



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# File 'lib/far/replacer.rb', line 38

def redirection
  "> #{tmp_file}" if dry_run?
end

#replace ⇒ Object 



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# File 'lib/far/replacer.rb', line 21

def replace
  @substitution.split('/')[2]
end

#replace_file(file) ⇒ Object 



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# File 'lib/far/replacer.rb', line 63

def replace_file(file)
  original_version = `cat #{file.name}`
  `#{change_file_cmd(file)}`
  changed_version  = `cat #{replaced_file(file.name)}`

  return original_version, changed_version
end

#replaced_file(file) ⇒ Object 



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# File 'lib/far/replacer.rb', line 42

def replaced_file(file)
  return tmp_file if dry_run?
  file
end

#run? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/far/replacer.rb', line 47

def run?
  !dry_run?
end