#!/usr/bin/env ruby

# read-eval loop: repeatedly run a fixed command, appending each input line as arguments.
# supports basic line editing.
# arguments: command argument ...
# exit: ctrl+d or ctrl+c (sigint).
# examples: "repl find -name"

require "readline"
require "open3"

base = ARGV[0].to_s
fixed = (ARGV[1..] || []).map { |a| %("#{a}") }.join(" ")
prefix = [base, fixed].reject(&:empty?).join(" ")

trap("INT") { exit 0 }

while (line = Readline.readline("> ", true))
  cmd = (prefix + " " + line).strip
  out, _, _ = Open3.capture3(cmd)
  STDOUT.write(out.rstrip + "\n")
end