Class: Rbr::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/rbr/cli.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CLI

Returns a new instance of CLI.



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# File 'lib/rbr/cli.rb', line 9

def initialize
  check_arg_count

  @matcher = ARGV[0].to_sym
  @condition = ARGV[1]
end

Instance Method Details

#check_arg_count ⇒ Object 



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# File 'lib/rbr/cli.rb', line 52

def check_arg_count
  return true if ARGV.count >= 2

  warn <<~USAGE
    Usage:
      rbr MATCHER PATTERN FILE

    Examples:
      # find assignments to lvalue :@author in the file test/book.rb
      rbr assignment @author test/book.rb

      # find strings matching /Author.*name/ in the file test/book.rb
      rbr str "Author.*name" test/book.rb
  USAGE

  false
end

#expand_path(path) ⇒ Object 



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# File 'lib/rbr/cli.rb', line 45

def expand_path(path)
  return [path] if File.file?(path)

  # if path is not a file, then glob all .rb files beneath it
  Dir.glob("#{path}/**/*.rb")
end

#filenames ⇒ Object 



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# File 'lib/rbr/cli.rb', line 33

def filenames
  pattern = if ARGV.count > 2
              ARGV[2..]
            else
              ["."]
            end

  pattern.map { |arg| expand_path(arg) }
         .flatten
         .select { |filename| File.file?(filename) }
end

#matching_nodes ⇒ Object 



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# File 'lib/rbr/cli.rb', line 22

def matching_nodes
  filenames.to_h do |filename|
    root, comments = Parser::CurrentRuby.parse_file_with_comments(filename)

    [filename, Query.new(@matcher, @condition).run(root, comments)]
  rescue EncodingError, Parser::SyntaxError => e
    warn "# Error parsing #{filename}: #{e}"
    [filename, []]
  end
end

#start ⇒ Object 



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# File 'lib/rbr/cli.rb', line 16

def start
  matching_nodes.each do |filename, nodes|
    nodes.each { |node| puts "#{filename}:#{node.pretty_print}" }
  end
end