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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()
else
handle_create_without_match()
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
match_count = lines.select { |l| regex.match(l) }.size
if match_count > 1
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)
end
if (match_count == 0)
fh.puts(resource[:line])
end
end
end
def handle_create_without_match
File.open(resource[:path], 'a') do |fh|
fh.puts resource[:line]
end
end
end
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