Converts an absolute filename to an escaped ASCII-encoded URI, with the path component following Section 3.3.
of RFC 2396.
| filename |
an absolute filename specified in the GLib file name encoding, which is the on-disk file name bytes on Unix, and UTF-8 on Windows |
| hostname |
A UTF-8 encoded hostname, or null for none. |
|
a newly-allocated string holding the resulting URI, or null on an error. |