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(imported from commit b2f581280dc7877051ef79d86eac671bfd455ace)

puppet/stdlib/lib/puppet/provider/file_line/ruby.rb

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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