module LineContaining

# File lib/line_containing.rb, line 18
def self.add_after(str_orig, str_add, path)
  path_old = path
  path_new = "#{path_old}.new"
  file_w = File.open(path_new, 'w')
  File.readlines(path_old).each do |line|
    file_w.write(line)
    if line.include? str_orig
      file_w.write("\n") if line[-1] != "\n"
      file_w.write("#{str_add}\n")
    end
  end
  file_w.close
  system("rm #{path_old}")
  system("mv #{path_new} #{path_old}")
end

# File lib/line_containing.rb, line 5
def self.add_before(str_orig, str_add, path)
  path_old = path
  path_new = "#{path_old}.new"
  file_w = File.open(path_new, 'w')
  File.readlines(path_old).each do |line|
    file_w.write("#{str_add}\n") if line.include? str_orig
    file_w.write(line)
  end
  file_w.close
  system("rm #{path_old}")
  system("mv #{path_new} #{path_old}")
end

# File lib/line_containing.rb, line 50
def self.delete(str_orig, path)
  path_old = path
  path_new = "#{path_old}.new"
  file_w = File.open(path_new, 'w')
  File.readlines(path_old).each do |line|
    if line.include? str_orig
      # Print NOTHING
    else
      file_w.write(line)
    end
  end
  file_w.close
  system("rm #{path_old}")
  system("mv #{path_new} #{path_old}")
end

# File lib/line_containing.rb, line 66
def self.delete_between(str1, str2, path)
  path_old = path
  path_new = "#{path_old}.new"
  file_w = File.open(path_new, 'w')
  to_delete = false
  File.readlines(path_old).each do |line|
    if line.include? str1
      file_w.write(line)
      to_delete = true
    elsif line.include? str2
      file_w.write(line)
      to_delete = false
    elsif to_delete == false
      file_w.write(line)
    end
  end
  file_w.close
  system("rm #{path_old}")
  system("mv #{path_new} #{path_old}")
end

# File lib/line_containing.rb, line 87
def self.delete_between_plus(str1, str2, path)
  delete_between(str1, str2, path)
  delete(str1, path)
  delete(str2, path)
end

# File lib/line_containing.rb, line 34
def self.replace(str_orig, str_new, path)
  path_old = path
  path_new = "#{path_old}.new"
  file_w = File.open(path_new, 'w')
  File.readlines(path_old).each do |line|
    if line.include? str_orig
      file_w.write("#{str_new}\n")
    else
      file_w.write(line)
    end
  end
  file_w.close
  system("rm #{path_old}")
  system("mv #{path_new} #{path_old}")
end