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module Utils
def self.popen_read(*args, **options, &block)
popen(args, "rb", options, &block)
end
def self.popen_write(*args, **options, &block)
popen(args, "wb", options, &block)
end
def self.popen(args, mode, options = {})
IO.popen("-", mode) do |pipe|
if pipe
return pipe.read unless block_given?
yield pipe
else
options[:err] ||= :close unless ENV["HOMEBREW_STDERR"]
begin
exec(*args, options)
rescue Errno::ENOENT
$stderr.puts "brew: command not found: #{args[0]}" unless options[:err] == :close
exit! 127
rescue SystemCallError
$stderr.puts "brew: exec failed: #{args[0]}" unless options[:err] == :close
exit! 1
end
end
end
end
end
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