Module: Mina::ExecHelpers

Defined in:
lib/mina-extras/jruby-patch.rb

Defined Under Namespace

Modules: Sys

Instance Method Summary collapse

Instance Method Details

#pretty_system(code) ⇒ Object

### pretty_system Internal: A pretty version of the default ‘#system` commands, but indents and puts color.

Returns the exit code in integer form.



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# File 'lib/mina-extras/jruby-patch.rb', line 14

def pretty_system(code)
  require 'shellwords'
  cmds = Shellwords.shellsplit(code)
  coathooks = 0

  status =
    Tools.popen4(*cmds) do |pid, i, o, e|
      # Handle `^C`.
      trap("INT") { Sys.handle_sigint(coathooks += 1, pid, self) }

      # __In the background,__ make stdin passthru, and stream stderr.
      th_err = Sys.stream_stderr!(e) { |str| print_stderr str }
      th_in  = Sys.stream_stdin!     { |chr| i.putc chr }

      # __In the foreground,__ stream stdout to the output helper.
      Sys.stream_stdout(o) { |ch| print_char ch }

      th_err.join
      th_in.terminate
    end

  status.exitstatus
end