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Contents
module Kernel
# Silences any stream for the duration of the block.
#
# silence_stream(STDOUT) do
# puts 'This will never be seen'
# end
#
# puts 'But this will'
#
# CREDIT: David Heinemeier Hansson
def silence_stream(*streams) #:yeild:
on_hold = streams.collect{ |stream| stream.dup }
streams.each do |stream|
stream.reopen(RUBY_PLATFORM =~ /mswin/ ? 'NUL:' : '/dev/null')
stream.sync = true
end
yield
ensure
streams.each_with_index do |stream, i|
stream.reopen(on_hold[i])
end
end
#
def silence_stderr #:yeild:
silence_stream(STDERR) { yield }
end
#
def silence_stdout #:yeild:
silence_stream(STDOUT) { yield }
end
# Just like silence_stream, but will default to
# STDOUT, STDERR if no streams are given.
def silently(*streams) #:yeild:
streams = [STDOUT, STDERR] if streams.empty?
silence_stream(*streams){ yield }
end
# Sets $VERBOSE to nil for the duration of the block
# and back to its original value afterwards.
#
# silence_warnings do
# value = noisy_call # no warning voiced
# end
#
# noisy_call # no warning is voiced
#
# CREDIT: David Heinemeier Hansson
def silence_warnings
old_verbose, $VERBOSE = $VERBOSE, nil
yield
ensure
$VERBOSE = old_verbose
end
# Sets $VERBOSE to true for the duration of the block
# and back to its original value afterwards.
#
# CREDIT: David Heinemeier Hansson
def enable_warnings
old_verbose, $VERBOSE = $VERBOSE, true
yield
ensure
$VERBOSE = old_verbose
end
end
Version data entries
10 entries across 10 versions & 1 rubygems