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# File 'lib/rbbt/util/cmd.rb', line 101
def self.cmd(cmd, options = {}, &block)
options = Misc.add_defaults options, :stderr => Log::DEBUG
in_content = options.delete(:in)
stderr = options.delete(:stderr)
pipe = options.delete(:pipe)
post = options.delete(:post)
log = options.delete(:log)
log = true if log.nil?
if stderr == true
stderr = Log::HIGH
end
cmd_options = process_cmd_options options
if cmd =~ /'\{opt\}'/
cmd.sub!('\'{opt}\'', cmd_options)
else
cmd << " " << cmd_options
end
in_content = StringIO.new in_content if String === in_content
sout, serr, sin = IO.pipe, IO.pipe, IO.pipe
pid = fork {
begin
sin.last.close
sout.first.close
serr.first.close
io = in_content
while IO === io
if SmartIO === io
io.original_close unless io.closed?
io.out.close unless io.out.nil? or io.out.closed?
io.err.close unless io.err.nil? or io.err.closed?
io = io.in
else
io.close unless io.closed?
io = nil
end
end
STDIN.reopen sin.first
sin.first.close
STDERR.reopen serr.last
serr.last.close
STDOUT.reopen sout.last
sout.last.close
STDOUT.sync = STDERR.sync = true
exec(cmd)
exit(-1)
rescue Exception
Log.debug("CMDError: #{$!.message}") if log
ddd $!.backtrace if log
raise CMDError, $!.message
end
}
sin.first.close
sout.last.close
serr.last.close
sin = sin.last
sout = sout.first
serr = serr.first
Log.debug "CMD: [#{pid}] #{cmd}" if log
if in_content.respond_to?(:read)
Thread.new do
begin
loop do
break if in_content.closed?
block = in_content.read 1024
break if block.nil? or block.empty?
sin.write block
end
sin.close unless sin.closed?
in_content.close unless in_content.closed?
rescue
Process.kill "INT", pid
raise $!
end
end
else
sin.close
end
if pipe
Thread.new do
while line = serr.gets
Log.log line, stderr if Integer === stderr and log
end
serr.close
Thread.exit
end
SmartIO.tie sout, pid, cmd, post, in_content, sin, serr
sout
else
err = ""
Thread.new do
while not serr.eof?
err << serr.gets if Integer === stderr
end
serr.close
Thread.exit
end
out = StringIO.new sout.read
sout.close unless sout.closed?
SmartIO.tie out, pid, cmd, post, in_content, sin, serr
Process.waitpid pid
if not $?.success?
exception = CMDError.new "Command [#{pid}] #{cmd} failed with error status #{$?.exitstatus}.\n#{err}"
raise exception
else
Log.log err, stderr if Integer === stderr and log
end
out
end
end
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