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Contents
# frozen_string_literal: true
module Byebug
#
# Interface class for standard byebug use.
#
class LocalInterface < Interface
EOF_ALIAS = "continue"
def initialize
super()
@input = $stdin
@output = $stdout
@error = $stderr
end
#
# Reads a single line of input using Readline. If Ctrl-D is pressed, it
# returns "continue", meaning that program's execution will go on.
#
# @param prompt Prompt to be displayed.
#
def readline(prompt)
with_repl_like_sigint { Readline.readline(prompt) || EOF_ALIAS }
end
#
# Yields the block handling Ctrl-C the following way: if pressed while
# waiting for input, the line is reset to only the prompt and we ask for
# input again.
#
# @note Any external 'INT' traps are overriden during this method.
#
def with_repl_like_sigint
orig_handler = trap("INT") { raise Interrupt }
yield
rescue Interrupt
puts("^C")
retry
ensure
trap("INT", orig_handler)
end
end
end
Version data entries
11 entries across 10 versions & 6 rubygems