Contents

require "concurrent-ruby"
require "parallel"

# File scanner for finding todos
class Todoloo::FileScanner
  def initialize(pattern, excludes: [], trace: nil)
    @parsers = Concurrent::Hash.new

    @pattern = pattern

    @excludes = excludes

    @trace_output = case trace
    when nil, false
      nil
    when true
      $stderr
    when String
      File.open(trace, "w")
    else
      raise ArgumentError, "Invalid value #{trace} for argument trace"
    end
  end

  # @return [Todoloo::TaskList]
  def scan
    Todoloo::TaskList.new.add(scan_files)
  end

  private

  def parser
    (@parsers[Parallel.worker_number] ||= Todoloo::Parser.new)
  end

  # @return [Array<Array<Task>>]
  def scan_files
    Parallel.map(Todoloo::Helpers.glob_paths(@pattern, excludes: @excludes)) do |path|
      trace { "* Scan #{path}" }

      parser.parse_and_transform(File.read(path), path: path)
    end
  end

  def trace(&block)
    return unless @trace_output

    @trace_output.puts(block.call)
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
todoloo-0.0.4	lib/todoloo/file_scanner.rb
todoloo-0.0.3	lib/todoloo/file_scanner.rb
todoloo-0.0.2	lib/todoloo/file_scanner.rb
todoloo-0.0.1	lib/todoloo/file_scanner.rb