Object
Detect the current command runner
This will return an instance of the Runner to be used to do the application launching.
If a runner cannot be detected then raise Runner::NotFoundError
The runner rules are, in order:
1) If you are on windows, you use the Windows Runner no matter what 2) If you are using the jruby engine, use the Jruby Runner. Unless rule
(1) took effect
3) Use Forkable (barring rules (1) and (2))
# File lib/launchy/detect/runner.rb, line 22 def self.detect host_os_family = Launchy::Detect::HostOsFamily.detect ruby_engine = Launchy::Detect::RubyEngine.detect return Windows.new if host_os_family.windows? if ruby_engine.jruby? then require 'spoon' return Jruby.new end return Forkable.new end
# File lib/launchy/detect/runner.rb, line 46 def commandline_normalize( cmdline ) c = cmdline.flatten! c = c.find_all { |a| (not a.nil?) and ( a.size > 0 ) } Launchy.log "commandline_normalized => #{c.join(' ')}" return c end
# File lib/launchy/detect/runner.rb, line 53 def dry_run( cmd, *args ) shell_commands(cmd, args).join(" ") end
# File lib/launchy/detect/runner.rb, line 57 def run( cmd, *args ) if Launchy.dry_run? then $stdout.puts dry_run( cmd, *args ) else wet_run( cmd, *args ) end end
cut it down to just the shell commands that will be passed to exec or posix_spawn. The cmd argument is split according to shell rules and the args are not escaped because they whole set is passed to system as *args and in that case system shell escaping rules are not done.
# File lib/launchy/detect/runner.rb, line 40 def shell_commands( cmd, args ) cmdline = [ cmd.shellsplit ] cmdline << args.flatten.collect{ |a| a.to_s } return commandline_normalize( cmdline ) end
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