Class: Boxes::Subprocess
- Inherits:
-
Object
- Object
- Boxes::Subprocess
- Defined in:
- lib/boxes/subprocess.rb
Overview
Standardise handling the stdout and stderr from Open3.
Class Method Summary collapse
-
.run(command) {|stdout, stderr, thread| ... } ⇒ Object
Create a new subprocess with a command, with a block for the response.
Class Method Details
.run(command) {|stdout, stderr, thread| ... } ⇒ Object
Create a new subprocess with a command, with a block for the response.
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# File 'lib/boxes/subprocess.rb', line 16 def self.run(command) # rubocop:disable Metrics/MethodLength # see: http://stackoverflow.com/a/1162850/83386 Open3.popen3(command) do |_stdin, stdout, stderr, thread| # read each stream from a new thread { out: stdout, err: stderr }.each do |key, stream| stream.each_line do |line| if key == :out yield line, nil, thread if block_given? elsif key == :err yield nil, line, thread if block_given? end end end thread.join # don't exit until the external process is done thread.value end end |