cli.rb in octopolo-0.3.6

- old
+ new

@@ -6,10 +6,11 @@
   class CLI
     # Public: Perform the given shell command.
     #
     # command - A String containing the command to perform.
     # say_command - A Boolean determining whether to display the performed command to the screen. (default: true)
+    # ignore_non_zero - Ignore exception for non-zero exit status of command.
     #
     # Examples
     #
     #   CLI.perform "git pull", false
     #   git pull
@@ -18,16 +19,16 @@
     #
     #   CLI.perform "git pull", false
     #   # => "Already up-to-date."
     #
     # Returns the output of the command as a String.
-    def self.perform(command, say_command = true)
+    def self.perform(command, say_command = true, ignore_non_zero=false)
       # display the command
       say command if say_command
       # and then perform it
       if Open3.respond_to?(:capture3)
         output, error, status = Open3.capture3(command)
-        raise "command=#{command}; exit_status=#{status.exitstatus}; stderr=#{error}" unless status.success?
+        raise "command=#{command}; exit_status=#{status.exitstatus}; stderr=#{error}" unless status.success? || ignore_non_zero
       else
         # Only necessary as long as we use 1.8.7, which doesn't have Open3.capture3
         output = `#{command}`
       end
 