Initializing $LOAD_PATH manually? (embedding ruby)

ruby-talk
1

Hi,

I am embedding ruby in an application and shipping it with app as well, so I need to setup the load path manually instead of calling ruby_init_loadpath(). Here is the code:

  NSBundle *bundle = [NSBundle mainBundle];
  NSString *path = [NSString stringWithFormat:@"%@/../Resources/ruby", [bundle pathForAuxiliaryExecutable:@"My App"]];
  load_path = rb_ary_new();
  rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "site_ruby/1.8"] UTF8String]));
  rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "site_ruby/1.8/powerpc-darwin8.7.0"] UTF8String]));
  rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "site_ruby"] UTF8String]));
  rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "1.8"] UTF8String]));
  rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "1.8/powerpc-darwin8.7.0"] UTF8String]));
  rb_gv_set("$:", load_path);

I get this error:

  ruby: $: is a read-only variable (NameError)

How can I get around this?

Thanks,
-- Daniel

2

Well, that was dumb of me. This worked:

NSBundle *bundle = [NSBundle mainBundle];
NSString *path = [NSString stringWithFormat:@"%@/../Resources/ruby", [bundle pathForAuxiliaryExecutable:@"My App"]];
VALUE load_path = rb_gv_get("$:");
rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "site_ruby/1.8"] UTF8String]));
rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "site_ruby/1.8/powerpc-darwin8.7.0"] UTF8String]));
rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "site_ruby"] UTF8String]));
rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "1.8"] UTF8String]));
rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%s", path, "1.8/powerpc-darwin8.7.0"] UTF8String]));
//rb_p(rb_gv_get("$:"));

-- Daniel

···

On Aug 19, 2006, at 7:18 PM, Daniel Harple wrote:

I get this error:

  ruby: $: is a read-only variable (NameError)

How can I get around this?

3

Hi,

At Sun, 20 Aug 2006 08:40:19 +0900,
Daniel Harple wrote in [ruby-talk:209438]:

Well, that was dumb of me. This worked:

NSBundle *bundle = [NSBundle mainBundle];
NSString *path = [NSString stringWithFormat:@"%@/../Resources/ruby",
[bundle pathForAuxiliaryExecutable:@"My App"]];
VALUE load_path = rb_gv_get("$:");
rb_ary_push(load_path, rb_str_new2([[NSString stringWithFormat:@"%@/%
s", path, "site_ruby/1.8"] UTF8String]));

Or, you can use ruby_incpush(), which splits path list with
path separator.

···

--
Nobu Nakada