glejeune / ruby-lua Goto Github PK

elsif ex = find_executable( "pkg-config" )
   ["lua", "lua5.1"].any? do |lib|
     res = `#{ex} --libs #{lib}`.chomp
     next false if res.empty?

     $LDFLAGS << " #{res}"
     $CFLAGS  << ' ' + `#{ex} --cflags #{lib}`.chomp
     true
   end
else

1.9.3p194 :006 > lua.var('string')
 => {"sub"=>nil, "upper"=>nil, "len"=>nil, "gfind"=>nil, "rep"=>nil, "find"=>nil, "match"=>nil, "char"=>nil, "dump"=>nil, "gmatch"=>nil, "reverse"=>nil, "byte"=>nil, "format"=>nil, "gsub"=>nil, "lower"=>nil} 
1.9.3p194 :007 >

1.9.3p194 :010 > lua.call(false, 'string.len', 'foo')
SystemCallError: unknown error - error running lua function `string.len': attempt to call a nil value
    from (irb):10:in `call'
    from (irb):10
    from /Users/norman/.rvm/gems/ruby-1.9.3-p194-perf/gems/railties-3.2.6/lib/rails/commands/console.rb:47:in `start'
    from /Users/norman/.rvm/gems/ruby-1.9.3-p194-perf/gems/railties-3.2.6/lib/rails/commands/console.rb:8:in `start'
    from /Users/norman/.rvm/gems/ruby-1.9.3-p194-perf/gems/railties-3.2.6/lib/rails/commands.rb:41:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'