зеркало из https://github.com/github/ruby.git
105 строки
2.5 KiB
Ruby
105 строки
2.5 KiB
Ruby
class Reline::KeyStroke
|
|
def initialize(config)
|
|
@config = config
|
|
end
|
|
|
|
def compress_meta_key(ary)
|
|
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
|
|
|
|
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
|
|
|
|
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
|
|
|
|
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
|
|
|
|
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
|
|
|
|
private
|
|
|
|
def key_mapping
|
|
@config.key_bindings
|
|
end
|
|
end
|