--- /dev/null
+Puppet::Type.type(:file_line).provide(:ruby) do
+ def exists?
+ lines.find do |line|
+ line.chomp == resource[:line].chomp
+ end
+ end
+
+ def create
+ if resource[:match]
+ handle_create_with_match
+ elsif resource[:after]
+ handle_create_with_after
+ else
+ append_line
+ end
+ end
+
+ def destroy
+ local_lines = lines
+ File.open(resource[:path],'w') do |fh|
+ fh.write(local_lines.reject{|l| l.chomp == resource[:line] }.join(''))
+ 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.
+ @lines ||= File.readlines(resource[:path])
+ end
+
+ def handle_create_with_match()
+ regex = resource[:match] ? Regexp.new(resource[:match]) : nil
+ regex_after = resource[:after] ? Regexp.new(resource[:after]) : nil
+ match_count = count_matches(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 |l|
+ fh.puts(regex.match(l) ? resource[:line] : l)
+ if (match_count == 0 and regex_after)
+ if regex_after.match(l)
+ 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
+ regex = Regexp.new(resource[:after])
+ count = count_matches(regex)
+ case count
+ when 1 # find the line to put our line after
+ File.open(resource[:path], 'w') do |fh|
+ lines.each do |l|
+ fh.puts(l)
+ if regex.match(l) then
+ fh.puts(resource[:line])
+ end
+ end
+ end
+ when 0 # append the line to the end of the file
+ append_line
+ else
+ raise Puppet::Error, "#{count} lines match pattern '#{resource[:after]}' in file '#{resource[:path]}'. One or no line must match the pattern."
+ end
+ end
+
+ def count_matches(regex)
+ lines.select{|l| l.match(regex)}.size
+ end
+
+ ##
+ # append the line to the file.
+ #
+ # @api private
+ def append_line
+ File.open(resource[:path], 'w') do |fh|
+ lines.each do |l|
+ fh.puts(l)
+ end
+ fh.puts resource[:line]
+ end
+ end
+end