[whatwg] URL: file: URLs

Anne van Kesteren annevk at annevk.nl
Wed Oct 31 06:52:01 PDT 2012

On Wed, Oct 31, 2012 at 9:27 AM, Mikko Rantalainen
<mikko.rantalainen at peda.net> wrote:
> João Eiras, 2012-10-31 01:41 (Europe/Helsinki):
>> In both Firefox and Chrome if you type file://aaa/some/path, or
>> file://localhost/some/path, the aaa and localhost parts are ignored, and
>> the rest of the path is interpreted as a local file path. In Opera,
>> anything that is not localhost gives an error.
> How about following:
> (1) file://c:/foo tries to connect to server "c:" and request shared
> entity "foo".

I think bz made it pretty clear we need to treat as if you typed
"file:///c:/foo" (at least on Windows, my preference is all
platforms). Not sure what the rules are exactly, but I believe they
are if you have a single ASCII letter followed by ":" or "|".

> (2) file://foo/bar tries to connect to server "foo" and request shared
> entity "bar"

I think we should stick for now to how it should be parsed.
Interpretation is a different layer. So this would give host "foo" and
path "/bar". E.g. on Mac it might well end up meaning that host does
not matter and localhost is always used. I think we should not let
that affect parsing or serialization however, because then we end up
with platform-specific rules.

> Some problematic URLs are still possible:
> (6) file:///foo/bar should refer to entity "/foo/bar" in
> POSIX-compatible systems but I have no idea where it would map to with
> windows-style drive letter naming at the start of the local path.

It would probably not map to anything, but that's fine. Again, we want
to treat parsing of file: URLs distinct from interpretation of file


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