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comp.lang.ruby

Initializing $LOAD_PATH manually? (embedding ruby

Daniel Harple

8/19/2006 11:18:00 PM

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 Answers

Daniel Harple

8/19/2006 11:40:00 PM

0

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?

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

Nobuyoshi Nakada

8/20/2006 2:12:00 AM

0

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