new Loader().contentLoaderInfo.loaderURL returns file:// instead of whole path

[evilpie]

In Flash new Loader().contentLoaderInfo.loaderURL returns the whole path of the SWF, in Ruffle it's just file:///.

The value probably comes from either SwfMovie::empty or SwfMovie::empty_fake_compressed_len.

[danielhjacobs]

https://github.com/ruffle-rs/ruffle/blob/master/core/src/avm2/globals/flash/display/loader.rs#L41: Seems the comment here was not a good idea: "Some LoaderInfo properties (such as 'bytesLoaded' and 'bytesTotal') are always accessible, even before the 'init' event has fired. Using an empty movie gives us the correct value (0) for them."

[evilpie]

This happens for http://www.freeaddictinggames.com/loader/ima-vast-preroll.swf?v=2 from https://github.com/ruffle-rs/ruffle/issues/8619#issuecomment-1830429920.

[danielhjacobs]

https://github.com/ruffle-rs/ruffle/blob/master/core/src/avm2/globals/flash/display/loader.rs#L41

This was added by @Aaron1011 in #7636.

[evilpie]

See also #13965, because even with the fixed URL the RegExp still fails anyway.