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#!/usr/bin/env ruby
require 'reline'
require 'optparse'
require_relative 'termination_checker'
opt = OptionParser.new
opt.on('--prompt-list-cache-timeout VAL') { |v|
Reline::LineEditor.__send__(:remove_const, :PROMPT_LIST_CACHE_TIMEOUT)
Reline::LineEditor::PROMPT_LIST_CACHE_TIMEOUT = v.to_f
}
opt.on('--dynamic-prompt') {
Reline.prompt_proc = proc { |lines|
lines.each_with_index.map { |l, i|
'[%04d]> ' % i
}
}
}
opt.on('--broken-dynamic-prompt') {
Reline.prompt_proc = proc { |lines|
range = lines.size > 1 ? (0..(lines.size - 2)) : (0..0)
lines[range].each_with_index.map { |l, i|
'[%04d]> ' % i
}
}
}
opt.on('--dynamic-prompt-returns-empty') {
Reline.prompt_proc = proc { |l| [] }
}
opt.on('--auto-indent') {
AutoIndent.new
}
opt.on('--dialog VAL') { |v|
Reline.add_dialog_proc(:simple_dialog, lambda {
return nil if v.include?('nil')
if v.include?('simple')
contents = <<~RUBY.split("\n")
Ruby is...
A dynamic, open source programming
language with a focus on simplicity
and productivity. It has an elegant
syntax that is natural to read and
easy to write.
RUBY
elsif v.include?('long')
contents = <<~RUBY.split("\n")
Ruby is...
A dynamic, open
source programming
language with a
focus on simplicity
and productivity.
It has an elegant
syntax that is
natural to read
and easy to write.
RUBY
end
if v.include?('scrollkey')
dialog.trap_key = nil
if key and key.match?(dialog.name)
if dialog.pointer.nil?
dialog.pointer = 0
elsif dialog.pointer >= (contents.size - 1)
dialog.pointer = 0
else
dialog.pointer += 1
end
end
dialog.trap_key = [?j.ord]
height = 4
end
scrollbar = false
if v.include?('scrollbar')
scrollbar = true
end
Reline::DialogRenderInfo.new(pos: cursor_pos, contents: contents, height: height, scrollbar: scrollbar)
})
}
opt.on('--complete') {
Reline.completion_proc = lambda { |target, preposing = nil, postposing = nil|
%w{String ScriptError SyntaxError Signal}.select{ |c| c.start_with?(target) }
}
}
opt.on('--autocomplete') {
Reline.autocompletion = true
Reline.completion_proc = lambda { |target, preposing = nil, postposing = nil|
%w{String Struct Symbol ScriptError SyntaxError Signal}.select{ |c| c.start_with?(target) }
}
}
opt.on('--autocomplete-long') {
Reline.autocompletion = true
Reline.completion_proc = lambda { |target, preposing = nil, postposing = nil|
%w{String Struct Symbol StopIteration SystemCallError SystemExit SystemStackError ScriptError SyntaxError Signal SizedQueue Set SecureRandom Socket StringIO StringScanner Shellwords Syslog Singleton SDBM}.select{ |c| c.start_with?(target) }
}
}
opt.parse!(ARGV)
begin
stty_save = `stty -g`.chomp
rescue
end
begin
prompt = ENV['RELINE_TEST_PROMPT'] || 'prompt> '
puts 'Multiline REPL.'
checker = TerminationChecker.new
while code = Reline.readmultiline(prompt, true) { |code| checker.terminated?(code) }
case code.chomp
when 'exit', 'quit', 'q'
exit 0
when ''
# NOOP
else
begin
result = eval(code)
puts "=> #{result.inspect}"
rescue ScriptError, StandardError => e
puts "Traceback (most recent call last):"
e.backtrace.reverse_each do |f|
puts " #{f}"
end
puts e.message
end
end
end
rescue Interrupt
puts '^C'
`stty #{stty_save}` if stty_save
exit 0
ensure
`stty #{stty_save}` if stty_save
end
begin
puts
rescue Errno::EIO
# Maybe the I/O has been closed.
end
|
