Sha256: 0ea756ddee1de766144cbef677c6a84ab995f70da3d7f7876ec22d0376b08f97
Contents?: true
Size: 941 Bytes
Versions: 19
Compression:
Stored size: 941 Bytes
Contents
require 'darkext/hash'
module DarkIO
# Runs a block and captures the output it generates
def self.capture_output(opts = { }) # yield e
opts.with_defaults!(:stdout => true, :stderr => true)
cout,cerr = opts[:stdout],opts[:stderr]
yield and return if !cout && !cerr
old_stdout = STDOUT.dup if cout
old_stderr = STDERR.dup if cerr
r_stdout,w_stdout = IO.pipe if cout
r_stderr,w_stderr = IO.pipe if cerr
STDOUT.reopen(w_stdout) if cout
STDERR.reopen(w_stderr) if cerr
begin
yield
ensure
STDOUT.reopen(old_stdout) if cout
STDERR.reopen(old_stderr) if cerr
w_stdout.close if cout
w_stderr.close if cerr
end
ret_stdout = r_stdout.read if cout
ret_stderr = r_stderr.read if cerr
r_stdout.close if cout
r_stderr.close if cerr
return ret_stdout,ret_stderr if cout && cerr
return ret_stdout if cout
return ret_stderr if cerr
end
end
Version data entries
19 entries across 19 versions & 1 rubygems