Module: RelinePac::Packages::History::Methods

Defined in:
lib/reline_pac/packages/history.rb

Overview

Methods adds fzf history search to Reline::LineEditor.

Instance Method Summary collapse

Instance Method Details

#fzf_history(_key) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength, Metrics/PerceivedComplexity



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# File 'lib/reline_pac/packages/history.rb', line 10

def fzf_history(_key)
  all_history = Reline::HISTORY.to_a
  return if all_history.empty?

  seen = {}
  filtered = all_history.reverse.filter_map do |h|
    stripped = h.strip
    next if stripped.empty? || seen[stripped]

    seen[stripped] = true
    h
  end

  display = filtered.map { |h| h.gsub("\n", '⏎') }

  selected_index = nil
  ::IO.popen("fzf --reverse --border --query='#{line}' --with-nth=1 --delimiter=$'\\t'", 'r+') do |io|
    display.each_with_index { |d, i| io.puts "#{d}\t#{i}" }
    io.close_write
    result = io.read.strip
    selected_index = result.split("\t").last.to_i unless result.empty?
  end

  selected_text = selected_index ? filtered[selected_index] : whole_buffer
  reset_line
  insert_multiline_text(selected_text)
  $stdout.write prompt_list.last
  if selected_text.include?("\n")
    $stdout.write selected_text.split("\n").last
  else
    $stdout.write line
  end
end