diff options
Diffstat (limited to 'lib/alaveteli_external_command.rb')
| -rw-r--r-- | lib/alaveteli_external_command.rb | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/alaveteli_external_command.rb b/lib/alaveteli_external_command.rb index d32af4c90..ddf968f90 100644 --- a/lib/alaveteli_external_command.rb +++ b/lib/alaveteli_external_command.rb @@ -18,6 +18,9 @@ module AlaveteliExternalCommand # Run an external program, and return its output. # Standard error is suppressed unless the program # fails (i.e. returns a non-zero exit status). + # If the program fails, returns nil and writes any error to stderr. + # TODO: calling code should be able to specify error stream - may want to log it or + # otherwise act upon it. opts = {} if !args.empty? && args.last.is_a?(Hash) opts = args.last @@ -25,7 +28,12 @@ module AlaveteliExternalCommand program_path = find_program(program_name) xc = ExternalCommand.new(program_path, *args) - xc.run + begin + xc.run + rescue ExternalCommand::ChildUnterminated => e + $stderr.puts(e.message) + return nil + end if !xc.exited # Crash or timeout |