Module: MRubyTools::CLI

Defined in:

lib/mruby_tools.rb

Constant Summary

USAGE_EXIT =

1

Class Method Summary

• .args(argv = ARGV) ⇒ Object
• .usage(msg = nil) ⇒ Object

Class Method Details

.args(argv = ARGV) ⇒ Object

# File 'lib/mruby_tools.rb', line 176

def self.args(argv = ARGV)
  rb_files = []
  out_file = nil
  c_file = nil
  mruby_dir = nil
  verbose = false
  help = false
  bytecode = false

  while !argv.empty?
    arg = argv.shift
    if arg == '-o'
      out_file = argv.shift
      raise "no out_file provided with -o" unless out_file
      raise "#{out_file} is misnamed" if File.extname(out_file) == '.rb'
    elsif arg == '-c'
      c_file = File.open(argv.shift || 'generated.c', "w")
    elsif arg == '-v'
      verbose = true
    elsif arg == '-h'
      help = true
    elsif arg == '-m'
      mruby_dir = argv.shift
      raise "no mruby_dir provided with -m" unless mruby_dir
    elsif arg == '-b'
      bytecode = true
    else
      rb_files << arg unless arg == '--'
    end
  end

  c_file ||= Tempfile.new(['mrbt-', '.c'])
  out_file ||= 'outfile'

  { verbose: verbose,
    help: help,
    c_file: c_file,
    out_file: out_file,
    rb_files: rb_files,
    mruby_dir: mruby_dir,
    bytecode: bytecode }
end

.usage(msg = nil) ⇒ Object

# File 'lib/mruby_tools.rb', line 163

def self.usage(msg = nil)
  puts <<EOF
  USAGE: mrbt file1.rb file2.rb ...
OPTIONS: -o outfile     (provide a name for the standalone executable)
     -c generated.c (leave the specified C file on the filesystem)
     -m mruby_dir   (provide the dir for mruby src)
     -b             (pregenerate ruby bytecode for faster execution)
     -v             (verbose)
EOF
  warn "  ERROR: #{msg}" if msg
  exit(msg ? USAGE_EXIT : 0)
end