ruby.rb
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	Puppet::Type.type(:file_line).provide(:ruby) do
	def exists?
	found = false
	lines_count = 0
	lines.each do \|line\|
	found = line.chomp == resource[:line]
	if found
	lines_count += 1
	end
	end
	if resource[:match] == nil
	found = lines_count > 0
	else
	match_count = count_matches(new_match_regex)
	if resource[:append_on_no_match].to_s == 'false'
	found = true
	elsif resource[:replace].to_s == 'true'
	found = lines_count > 0 && lines_count == match_count
	else
	found = match_count > 0
	end
	end
	found
	end

	def create
	unless resource[:replace].to_s != 'true' && count_matches(new_match_regex) > 0
	if resource[:match]
	handle_create_with_match
	elsif resource[:after]
	handle_create_with_after
	else
	handle_append_line
	end
	end
	end

	def destroy
	if resource[:match_for_absence].to_s == 'true' && resource[:match]
	handle_destroy_with_match
	else
	handle_destroy_line
	end
	end

	private

	def lines
	# If this type is ever used with very large files, we should
	# write this in a different way, using a temp
	# file; for now assuming that this type is only used on
	# small-ish config files that can fit into memory without
	# too much trouble.
	begin
	@lines \|\|= File.readlines(resource[:path], :encoding => resource[:encoding])
	rescue TypeError => e
	# Ruby 1.8 doesn't support open_args
	@lines \|\|= File.readlines(resource[:path])
	end
	end

	def new_after_regex
	resource[:after] ? Regexp.new(resource[:after]) : nil
	end

	def new_match_regex
	resource[:match] ? Regexp.new(resource[:match]) : nil
	end

	def count_matches(regex)
	lines.select{ \|line\| line.match(regex) }.size
	end

	def handle_create_with_match()
	after_regex = new_after_regex
	match_regex = new_match_regex
	match_count = count_matches(new_match_regex)

	if match_count > 1 && resource[:multiple].to_s != 'true'
	raise Puppet::Error, "More than one line in file '#{resource[:path]}' matches pattern '#{resource[:match]}'"
	end

	File.open(resource[:path], 'w') do \|fh\|
	lines.each do \|line\|
	fh.puts(match_regex.match(line) ? resource[:line] : line)
	if match_count == 0 && after_regex
	if after_regex.match(line)
	fh.puts(resource[:line])
	match_count += 1 # Increment match_count to indicate that the new line has been inserted.
	end
	end
	end

	if (match_count == 0)
	fh.puts(resource[:line])
	end
	end
	end

	def handle_create_with_after
	after_regex = new_after_regex
	after_count = count_matches(after_regex)

	if after_count > 1 && resource[:multiple].to_s != 'true'
	raise Puppet::Error, "#{after_count} lines match pattern '#{resource[:after]}' in file '#{resource[:path]}'. One or no line must match the pattern."
	end

	File.open(resource[:path],'w') do \|fh\|
	lines.each do \|line\|
	fh.puts(line)
	if after_regex.match(line)
	fh.puts(resource[:line])
	end
	end

	if (after_count == 0)
	fh.puts(resource[:line])
	end
	end
	end

	def handle_destroy_with_match
	match_regex = new_match_regex
	match_count = count_matches(match_regex)
	if match_count > 1 && resource[:multiple].to_s != 'true'
	raise Puppet::Error, "More than one line in file '#{resource[:path]}' matches pattern '#{resource[:match]}'"
	end

	local_lines = lines
	File.open(resource[:path],'w') do \|fh\|
	fh.write(local_lines.reject{ \|line\| match_regex.match(line) }.join(''))
	end
	end

	def handle_destroy_line
	local_lines = lines
	File.open(resource[:path],'w') do \|fh\|
	fh.write(local_lines.reject{ \|line\| line.chomp == resource[:line] }.join(''))
	end
	end

	def handle_append_line
	File.open(resource[:path],'w') do \|fh\|
	lines.each do \|line\|
	fh.puts(line)
	end
	fh.puts(resource[:line])
	end
	end
	end

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