Class: Querly::CLI::Console

Inherits:
Object
  • Object
show all
Includes:
Querly::Concerns::BacktraceFormatter
Defined in:
lib/querly/cli/console.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Querly::Concerns::BacktraceFormatter

#format_backtrace

Constructor Details

#initialize(paths:, history_path:, history_size:) ⇒ Console

Returns a new instance of Console.



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# File 'lib/querly/cli/console.rb', line 13

def initialize(paths:, history_path:, history_size:)
  @paths = paths
  @history_path = history_path
  @history_size = history_size
  @history = []
end

Instance Attribute Details

#history ⇒ Object (readonly)

Returns the value of attribute history.



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# File 'lib/querly/cli/console.rb', line 11

def history
  @history
end

#history_path ⇒ Object (readonly)

Returns the value of attribute history_path.



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# File 'lib/querly/cli/console.rb', line 9

def history_path
  @history_path
end

#history_size ⇒ Object (readonly)

Returns the value of attribute history_size.



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# File 'lib/querly/cli/console.rb', line 10

def history_size
  @history_size
end

#paths ⇒ Object (readonly)

Returns the value of attribute paths.



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# File 'lib/querly/cli/console.rb', line 8

def paths
  @paths
end

Instance Method Details

#analyzer ⇒ Object 



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# File 'lib/querly/cli/console.rb', line 42

def analyzer
  return @analyzer if @analyzer

  @analyzer = Analyzer.new(config: nil, rule: nil)

  ScriptEnumerator.new(paths: paths, config: nil).each do |path, script|
    case script
    when Script
      @analyzer.scripts << script
    when StandardError
      p path: path, script: script.inspect
      puts script.backtrace
    end
  end

  @analyzer
end

#load_history ⇒ Object 



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# File 'lib/querly/cli/console.rb', line 107

def load_history
  history_path.readlines.each do |line|
    line.chomp!
    Readline::HISTORY.push(line)
    history.push line
  end
rescue Errno::ENOENT
  # in the first time
end

#puts_commands ⇒ Object 



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# File 'lib/querly/cli/console.rb', line 125

def puts_commands
  puts "Commands:\n  - find PATTERN   Find PATTERN from given paths\n  - reload!        Reload program from paths\n  - quit\n\n  Message\nend\n"

#reload! ⇒ Object 



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# File 'lib/querly/cli/console.rb', line 37

def reload!
  @analyzer = nil
  analyzer
end

#save_history(line) ⇒ Object 



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# File 'lib/querly/cli/console.rb', line 117

def save_history(line)
  history.push line
  if history.size > history_size
    @history = history.drop(history.size - history_size)
  end
  history_path.write(history.join("\n") + "\n")
end

#start ⇒ Object 



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# File 'lib/querly/cli/console.rb', line 20

def start
  puts "Querly \#{VERSION}, interactive console\n\n  Message\n\n  puts_commands\n\n  STDOUT.print \"Loading...\"\n  STDOUT.flush\n  reload!\n  STDOUT.puts \" ready!\"\n\n  load_history\n  start_loop\nend\n"

#start_loop ⇒ Object 



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# File 'lib/querly/cli/console.rb', line 60

def start_loop
  while line = Readline.readline("> ", true)
    case line
    when "quit", "exit"
      exit
    when "reload!"
      STDOUT.print "reloading..."
      STDOUT.flush
      reload!
      STDOUT.puts " done"
    when /^find (.+)/
      begin
        pattern = Pattern::Parser.parse($1, where: {})

        count = 0

        analyzer.find(pattern) do |script, pair|
          path = script.path.to_s
          line_no = pair.node.loc.first_line
          range = pair.node.loc.expression
          start_col = range.column
          end_col = range.last_column

          src = range.source_buffer.source_lines[line_no-1]
          src = Rainbow(src[0...start_col]).blue +
            Rainbow(src[start_col...end_col]).bright.blue.bold +
            Rainbow(src[end_col..-1]).blue

          puts "  #{path}:#{line_no}:#{start_col}\t#{src}"

          count += 1
        end

        puts "#{count} results"

        save_history line
      rescue => exn
        STDOUT.puts Rainbow("Error: #{exn}").red
        STDOUT.puts "Backtrace:"
        STDOUT.puts format_backtrace(exn.backtrace)
      end
    else
      puts_commands
    end
  end
end