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# coding: utf-8
class HighLine
class Terminal::UnixStty < Terminal
# A Unix savvy method using stty to fetch the console columns, and rows.
# ... stty does not work in JRuby
def terminal_size
begin
require "io/console"
winsize = IO.console.winsize.reverse rescue nil
return winsize if winsize
rescue LoadError
end
if /solaris/ =~ RUBY_PLATFORM and
`stty` =~ /\brows = (\d+).*\bcolumns = (\d+)/
[$2, $1].map { |c| x.to_i }
elsif `stty size` =~ /^(\d+)\s(\d+)$/
[$2.to_i, $1.to_i]
else
[ 80, 24 ]
end
end
# *WARNING*: This requires the external "stty" program!
CHARACTER_MODE = "unix_stty" # For Debugging purposes only.
def raw_no_echo_mode
@state = `stty -g`
system "stty raw -echo -icanon isig"
end
def restore_mode
system "stty #{@state}"
print "\r"
end
def get_character( input = STDIN )
input.getc
end
def character_mode
"unix_stty"
end
def get_line(question, highline, options={})
raw_answer =
if question.readline
get_line_with_readline(question, highline, options={})
else
get_line_default(highline)
end
question.format_answer(raw_answer)
end
def get_line_with_readline(question, highline, options={})
require "readline" # load only if needed
question_string = highline.render_statement(question)
raw_answer = readline_read(question_string, question)
if !raw_answer and highline.track_eof?
raise EOFError, "The input stream is exhausted."
end
raw_answer || ""
end
def readline_read(string, question)
# prep auto-completion
Readline.completion_proc = lambda do |string|
question.selection.grep(/\A#{Regexp.escape(string)}/)
end
# work-around ugly readline() warnings
old_verbose = $VERBOSE
$VERBOSE = nil
raw_answer = Readline.readline(string, true)
$VERBOSE = old_verbose
raw_answer
end
def get_line_default(highline)
raise EOFError, "The input stream is exhausted." if highline.track_eof? and
highline.input.eof?
highline.input.gets
end
end
end
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