Class: Pry::Command::Hist

Inherits:
Pry::ClassCommand show all
Defined in:
lib/pry/commands/hist.rb

Constant Summary

Constants inherited from Pry::Command

VOID_VALUE

Constants included from Helpers::DocumentationHelpers

Helpers::DocumentationHelpers::YARD_TAGS

Constants included from Helpers::Text

Helpers::Text::COLORS

Instance Attribute Summary

Attributes inherited from Pry::ClassCommand

#args, #opts

Attributes inherited from Pry::Command

#arg_string, #captures, #command_block, #command_set, #context, #eval_string, #hooks, #output, #pry_instance, #target

Instance Method Summary collapse

Methods inherited from Pry::ClassCommand

#call, #complete, doc, #help, inherited, #setup, #slop, source, source_file, source_line, source_location, source_object, #subcommands

Methods inherited from Pry::Command

#_pry_, #after_hooks, banner, #before_hooks, #block, #call_safely, #call_with_hooks, #check_for_command_collision, command_name, #command_name, #command_options, command_regex, #commands, #complete, convert_to_regex, default_options, #description, doc, #find_hooks, group, #initialize, inspect, #interpolate_string, #match, match_score, matches?, name, #name, #normalize_method_args, options, #pass_block, #process_line, #run, #source, source, source_file, source_line, #state, state, subclass, #target_self, #tokenize, #use_unpatched_symbol, #void

Methods included from Pry::CodeObject::Helpers

#c_method?, #c_module?, #command?, #module_with_yard_docs?, #real_method_object?

Methods included from Helpers::DocumentationHelpers

#get_comment_content, get_comment_content, process_comment_markup, #process_comment_markup, #process_rdoc, process_rdoc, #process_yardoc, process_yardoc, process_yardoc_tag, #process_yardoc_tag, #strip_comments_from_c_code, strip_comments_from_c_code, #strip_leading_whitespace, strip_leading_whitespace

Methods included from Helpers::Text

#bold, #default, #indent, #no_color, #no_pager, #strip_color, #with_line_numbers

Methods included from Helpers::CommandHelpers

#absolute_index_number, #absolute_index_range, #get_method_or_raise, #internal_binding?, #one_index_number, #one_index_range, #one_index_range_or_number, #restrict_to_lines, #set_file_and_dir_locals, #temp_file, #unindent

Methods included from Helpers::OptionsHelpers

method_object, #method_object, method_options, #method_options

Methods included from Helpers::BaseHelpers

#colorize_code, #find_command, #heading, #highlight, #not_a_real_file?, #safe_send, #silence_warnings, #stagger_output, #use_ansi_codes?

Constructor Details

This class inherits a constructor from Pry::Command

Instance Method Details

#check_for_juxtaposed_replay(replay_sequence) ⇒ Boolean (private)

Checks +replay_sequence+ for the presence of neighboring replay calls.

Examples:

[1] pry(main)> hist --show 46894
46894: hist --replay 46675..46677
[2] pry(main)> hist --show 46675..46677
46675: 1+1
46676: a = 100
46677: hist --tail
[3] pry(main)> hist --replay 46894
Error: Replay index 46894 points out to another replay call:
`hist -r 46675..46677`
[4] pry(main)>

Parameters:

  • replay_sequence (String)

    The sequence of commands to be replayed (per saltum)

Returns:

  • (Boolean)

    false if +replay_sequence+ does not contain another "hist --replay" call

Raises:


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# File 'lib/pry/commands/hist.rb', line 143

def check_for_juxtaposed_replay(replay_sequence)
  if replay_sequence =~ /\Ahist(?:ory)?\b/
    # Create *fresh* instance of Options for parsing of "hist" command.
    slop_instance = slop
    slop_instance.parse(replay_sequence.split(' ')[1..-1])

    if slop_instance.present?(:r)
      replay_sequence = replay_sequence.split("\n").join('; ')
      index = opts[:r]
      index = index.min if index.min == index.max || index.max.nil?

      raise CommandError,
            "Replay index #{index} points out to another replay call: " \
            "`#{replay_sequence}`"
    end
  else
    false
  end
end

#find_historyPry::Code (private)

Finds history depending on the given switch.

Returns:

  • (Pry::Code)

    if it finds --all (or -a) switch, returns all entries in history. Without the switch returns only the entries from the current Pry session.


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# File 'lib/pry/commands/hist.rb', line 168

def find_history
  h = if opts.present?(:all)
        Pry.history.to_a
      else
        Pry.history.to_a.last(Pry.history.session_line_count)
      end

  Pry::Code(Pry.history.filter(h[0..-2]))
end

#options(opt) ⇒ Object


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# File 'lib/pry/commands/hist.rb', line 25

def options(opt)
  opt.on :a, :all, "Display all history"
  opt.on :H, :head, "Display the first N items",
         optional_argument: true, as: Integer
  opt.on :T, :tail, "Display the last N items",
         optional_argument: true, as: Integer
  opt.on :s, :show, "Show the given range of lines",
         optional_argument: true, as: Range
  opt.on :G, :grep, "Show lines matching the given pattern",
         argument: true, as: String
  opt.on :c, :clear, "Clear the current session's history"
  opt.on :r, :replay, "Replay a line or range of lines",
         argument: true, as: Range
  opt.on :save, "Save history to a file", argument: true, as: Range
  opt.on :e, :'exclude-pry', "Exclude Pry commands from the history"
  opt.on :n, :'no-numbers',  "Omit line numbers"
end

#processObject


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# File 'lib/pry/commands/hist.rb', line 43

def process
  @history = find_history

  @history = @history.between(opts[:show]) if opts.present?(:show)

  @history = @history.grep(opts[:grep]) if opts.present?(:grep)

  @history =
    if opts.present?(:head)
      @history.take_lines(1, opts[:head] || 10)
    elsif opts.present?(:tail)
      @history.take_lines(-(opts[:tail] || 10), opts[:tail] || 10)
    else
      @history
    end

  if opts.present?(:'exclude-pry')
    @history = @history.reject do |loc|
      command_set.valid_command?(loc.line)
    end
  end

  if opts.present?(:save)
    process_save
  elsif opts.present?(:clear)
    process_clear
  elsif opts.present?(:replay)
    process_replay
  else
    process_display
  end
end

#process_clearObject (private)


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# File 'lib/pry/commands/hist.rb', line 105

def process_clear
  Pry.history.clear
  output.puts "History cleared."
end

#process_displayObject (private)


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# File 'lib/pry/commands/hist.rb', line 78

def process_display
  @history = @history.with_line_numbers unless opts.present?(:'no-numbers')

  pry_instance.pager.open do |pager|
    @history.print_to_output(pager, true)
  end
end

#process_replayObject (private)


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# File 'lib/pry/commands/hist.rb', line 110

def process_replay
  @history = @history.between(opts[:r])
  replay_sequence = @history.raw

  # If we met follow-up "hist" call, check for the "--replay" option
  # presence. If "hist" command is called with other options, proceed
  # further.
  check_for_juxtaposed_replay(replay_sequence)

  replay_sequence.lines.each do |line|
    pry_instance.eval line, generated: true
  end
end

#process_saveObject (private)


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# File 'lib/pry/commands/hist.rb', line 86

def process_save
  case opts[:save]
  when Range
    @history = @history.between(opts[:save])

    raise CommandError, "Must provide a file name." unless args.first

    file_name = File.expand_path(args.first)
  when String
    file_name = File.expand_path(opts[:save])
  end

  output.puts "Saving history in #{file_name}..."

  File.open(file_name, 'w') { |f| f.write(@history.raw) }

  output.puts "History saved."
end