72089f3d13
Without this, file_line resource without the `match` parameter but with the `after` param will throw an error if there are multiple matches for the after expression. This patch creates the handling for the `multiple` parameter in handle_create_with_after. This allows you to add a line after the `after` expression if it appears at multiple points in a file. Updated reference to `file_line` in the README to reflect that the multiple parameter can be set when using `after` and/or `match` as the matching regex.
99 lines
2.5 KiB
Ruby
99 lines
2.5 KiB
Ruby
Puppet::Type.type(:file_line).provide(:ruby) do
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def exists?
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lines.find do |line|
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line.chomp == resource[:line].chomp
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end
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end
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def create
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if resource[:match]
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handle_create_with_match
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elsif resource[:after]
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handle_create_with_after
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else
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append_line
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end
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end
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def destroy
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local_lines = lines
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File.open(resource[:path],'w') do |fh|
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fh.write(local_lines.reject{|l| l.chomp == resource[:line] }.join(''))
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end
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end
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private
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def lines
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# If this type is ever used with very large files, we should
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# write this in a different way, using a temp
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# file; for now assuming that this type is only used on
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# small-ish config files that can fit into memory without
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# too much trouble.
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@lines ||= File.readlines(resource[:path])
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end
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def handle_create_with_match()
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regex = resource[:match] ? Regexp.new(resource[:match]) : nil
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regex_after = resource[:after] ? Regexp.new(resource[:after]) : nil
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match_count = count_matches(regex)
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if match_count > 1 && resource[:multiple].to_s != 'true'
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raise Puppet::Error, "More than one line in file '#{resource[:path]}' matches pattern '#{resource[:match]}'"
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end
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File.open(resource[:path], 'w') do |fh|
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lines.each do |l|
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fh.puts(regex.match(l) ? resource[:line] : l)
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if (match_count == 0 and regex_after)
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if regex_after.match(l)
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fh.puts(resource[:line])
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match_count += 1 #Increment match_count to indicate that the new line has been inserted.
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end
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end
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end
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if (match_count == 0)
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fh.puts(resource[:line])
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end
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end
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end
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def handle_create_with_after
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regex = Regexp.new(resource[:after])
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count = count_matches(regex)
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if count > 1 && resource[:multiple].to_s != 'true'
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raise Puppet::Error, "#{count} lines match pattern '#{resource[:after]}' in file '#{resource[:path]}'. One or no line must match the pattern."
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end
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File.open(resource[:path], 'w') do |fh|
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lines.each do |l|
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fh.puts(l)
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if regex.match(l) then
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fh.puts(resource[:line])
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end
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end
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end
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if (count == 0) # append the line to the end of the file
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append_line
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end
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end
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def count_matches(regex)
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lines.select{|l| l.match(regex)}.size
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end
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##
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# append the line to the file.
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#
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# @api private
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def append_line
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File.open(resource[:path], 'w') do |fh|
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lines.each do |l|
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fh.puts(l)
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end
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fh.puts resource[:line]
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end
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end
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end
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