module Opal::OS

def bash_c(*commands)
  cmd = if windows?
          [
            'bundle',
            'exec',
            'cmd',
            '/c',
          ]
        else
          [
            'bundle',
            'exec',
            'bash',
            '-c',
          ]
        end
  cmd << commands.join(cmd_sep)
end

def cmd_sep
  windows? ? ' & ' : ' ; '
end

def dev_null
  windows? ? 'NUL' : '/dev/null'
end

def env_sep
  windows? ? ';' : ':'
end

def macos?
  /darwin|mac os/.match?(RbConfig::CONFIG['host_os'])
end

def path_sep
  windows? ? '\\' : '/'
end

def shellescape(str)
  if windows?
    '"' + str.gsub('"', '""') + '"'
  else
    str.shellescape
  end
end

def windows?
  /bccwin|cygwin|djgpp|mingw|mswin|wince/.match?(RbConfig::CONFIG['host_os'])
end