Move to rust-url

[SimonSapin]

I don’t think this is a priority right now, but I’d like to replace extra::url and our hacks in servo_util::url with rust-url. This should fix #1671 and other corner cases. (See rust-lang/rust#10707)

This depends (at least) on chris-morgan/rust-http#57.

It would also be a good time to revisit our handling of file: (#1094) and data: (#1268) URLs.

In addition to URL parsing and resolving relative URLs against a base URL (which rust-url covers), one thing servo_util::url does is interpret some inputs as filenames relative to the current directory. This should be done only for the command-line arguments (eg. not for <a href>), and can be achieved by passing a file: URL for the current directory as the base URL. The URL standards is designed to handle this case. (Eg. by interpreting \ as / and some special handling of stuff that looks like a Windows drive letter.)

[pcwalton]

👍

[brson]

Please consider upstreaming rust-url into the main Rust repo.

[SimonSapin]

@brson Yes, that’s planned as well, but I’d like to port Servo (which may requires some changes) and fix some bugs before that. After it’s in, upgrading it will be tied to upgrading the compiler.