method

capture

v4.2.1 - Show latest stable - 0 notes - Class: Kernel

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What's this?

capture(stream) public

Captures the given stream and returns it:

stream = capture(:stdout) { puts 'notice' } stream # => "notice\n" stream = capture(:stderr) { warn 'error' } stream # => "error\n"

even for subprocesses:

stream = capture(:stdout) { system('echo notice') } stream # => "notice\n" stream = capture(:stderr) { system('echo error 1>&2') } stream # => "error\n"

Show source

# File activesupport/lib/active_support/core_ext/kernel/reporting.rb, line 88 def capture(stream) ActiveSupport::Deprecation.warn( "`#capture(stream)` is deprecated and will be removed in the next release." ) #not thread-safe stream = stream.to_s captured_stream = Tempfile.new(stream) stream_io = eval("$#{stream}") origin_stream = stream_io.dup stream_io.reopen(captured_stream) yield stream_io.rewind return captured_stream.read ensure captured_stream.close captured_stream.unlink stream_io.reopen(origin_stream) end

capture

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