#!/usr/bin/env ruby1.8.5

require "readline"
require "pathname"
require "fileutils"
require "nkf"

SHELL_CMD_FILE = "/tmp/cs3-command-in"
SHELL_RES_FILE = "/tmp/cs3-command-out"

FileUtils.touch([SHELL_CMD_FILE, SHELL_RES_FILE])


def command(c)
	cmd = Pathname.new(SHELL_CMD_FILE)
	res = Pathname.new(SHELL_RES_FILE)
	res.truncate(0)
	cmd.open("w") do |f|
		f.puts c
	end
	sleep 0.14 while res.zero?
	NKF.nkf("-w", res.read)
end


@cache = {}


Readline.completion_proc = proc {|word|
	words = word.split(".", -1)
	word = words.pop

	cmd = "__completion__(#{words.empty? ?  "global" : words.join(".")})"
	comp = @cache[cmd]
	unless comp
		comp = command(cmd)
		@cache[cmd] = comp
	end
	if comp =~ / : /
		[]
	else
		comp.split(",").grep(/\A#{Regexp.quote(word || "")}/i).map {|c|
			words.empty? ? c : words.join(".") + "." + c
		}
	end
}
Readline.completion_append_character = ""
Readline.completion_case_fold = true

command File.read("init.js")

while l = Readline.readline("> ", true)
	cmd = l.chomp
	if cmd == "exit"
		break
	else
		puts command(cmd).gsub(/\\n/, "\n")
		@cache.clear
	end
end