class Reline::KeyStroke - RDoc Documentation

# class Reline::KeyStroke

### Public Class Methods

new(config) click to toggle source

    # File lib/reline/key_stroke.rb, line 2
    def initialize(config)
      @config = config
    end

### Public Instance Methods

compress_meta_key(ary) click to toggle source

    # File lib/reline/key_stroke.rb, line 6
    def compress_meta_key(ary)
      return ary unless @config.convert_meta
      ary.inject([]) { |result, key|
        if result.size > 0 and result.last == "\e".ord
          result[result.size - 1] = Reline::Key.new(key, key | 0b10000000, true)
        else
          result << key
        end
        result
      }
    end

equal?(me, other) click to toggle source

    # File lib/reline/key_stroke.rb, line 42
    def equal?(me, other)
      case me
      when Array
        compressed_me = compress_meta_key(me)
        compressed_other = compress_meta_key(other)
        compressed_me.size == compressed_other.size and [compressed_me, compressed_other].transpose.all?{ |i| equal?(i[0], i[1]) }
      when Integer
        if other.is_a?(Reline::Key)
          if other.combined_char == "\e".ord
            false
          else
            other.combined_char == me
          end
        else
          me == other
        end
      when Reline::Key
        if other.is_a?(Integer)
          me.combined_char == other
        else
          me == other
        end
      end
    end

expand(input) click to toggle source

    # File lib/reline/key_stroke.rb, line 83
    def expand(input)
      input = compress_meta_key(input)
      lhs = key_mapping.keys.select { |item| start_with?(input, item) }.sort_by(&:size).last
      return input unless lhs
      rhs = key_mapping[lhs]

      case rhs
      when String
        rhs_bytes = rhs.bytes
        expand(expand(rhs_bytes) + expand(input.drop(lhs.size)))
      when Symbol
        [rhs] + expand(input.drop(lhs.size))
      when Array
        rhs
      end
    end

match_status(input) click to toggle source

    # File lib/reline/key_stroke.rb, line 67
    def match_status(input)
      key_mapping.keys.select { |lhs|
        start_with?(lhs, input)
      }.tap { |it|
        return :matched  if it.size == 1 && equal?(it[0], input)
        return :matching if it.size == 1 && !equal?(it[0], input)
        return :matched  if it.max_by(&:size)&.size&.< input.size
        return :matching if it.size > 1
      }
      key_mapping.keys.select { |lhs|
        start_with?(input, lhs)
      }.tap { |it|
        return it.size > 0 ? :matched : :unmatched
      }
    end

start_with?(me, other) click to toggle source

    # File lib/reline/key_stroke.rb, line 18
    def start_with?(me, other)
      compressed_me = compress_meta_key(me)
      compressed_other = compress_meta_key(other)
      i = 0
      loop do
        my_c = compressed_me[i]
        other_c = compressed_other[i]
        other_is_last = (i + 1) == compressed_other.size
        me_is_last = (i + 1) == compressed_me.size
        if my_c != other_c
          if other_c == "\e".ord and other_is_last and my_c.is_a?(Reline::Key) and my_c.with_meta
            return true
          else
            return false
          end
        elsif other_is_last
          return true
        elsif me_is_last
          return false
        end
        i += 1
      end
    end

### Private Instance Methods

key_mapping() click to toggle source

    # File lib/reline/key_stroke.rb, line 102
    def key_mapping
      @config.key_bindings
    end