I think I can agree with this. It's just that even delegating path
conversion (and canonicalization) to APR would take a lot of effort --
the APIs there are somewhat limited. Let's take things one step at a time.
Brane
William Uther wrote:
>On 20/1/02 10:55 AM, "cmpilato@collab.net" <cmpilato@collab.net> wrote:
>
>>Garrett Rooney <rooneg@electricjellyfish.net> writes:
>>
>>>i did a little poking around with this a few days ago, and it's not
>>>promising...
>>>
>>>now that we've removed the path types, we're back to the problem that
>>>we pass quite a few url's into svn_path_canonicalize, and we don't
>>>have any way to determine how to handle them. removing extraneous .'s
>>>and ..'s isn't too hard, but removing redundant /'s is a bitch,
>>>because we have to be sure not to wipe out the // in the urls.
>>>
>>>if anyone has a good solution for this, i'd love to hear it. i don't
>>>want to return to passing path types into all the svn_path functions,
>>>and having some kind of heuristic to determine what to remove and what
>>>to leave just seems clunky and prone to failure.
>>>
>>I don't know if it's a *good* solution, but svn_path_canonicalize
>>could start calling svn_path_is_url() (which itself can use some
>>maturing) to test for URL-ness. Once URL-ness is discovered, the
>>simple rule could be that we will never remove any of the first three
>>'/'s in the path:
>>
>> <scheme>://<optional_server>/path/on/server
>> | |
>> +------- "safe zone" -------+
>>
>
>Hi,
> Just a comment from the sidelines you should feel free to ignore if you
>choose...
>
>Why are you canonicalizing paths at all? If you really need to, shouldn't
>this be done inside APR?
>
>My reason for mentioning this is that, e.g. Java, tries to abstract paths
>across OS's, but does not do a wonderful job. Examples (which may or may
>not be relevant to subversion):
>
>On MacOS (Pre X), relative paths start with a path separator, absolute paths
>start without one.
>
>On MacOS (Pre X), . and .. mean nothing special. They could be the names of
>files.
>
>On MacOS (Pre X), two path separators in a row refers to the parent
>directory.
>
>If you just view paths as things with UNIX semantics modulo prefix and path
>separator then you'll have problems moving to some platforms. In fact, the
>mac java implementation (Pre X) implemented UNIX paths rather than try to
>deal with Sun's "Cross Platform" solution with MacOS paths.
>
>Separating path and URL types seems like a good idea. URL's are also nice
>because they have a well defined semantics across platforms, which paths
>seem to lack.
>
>Later, (and thankyou for subversion :)
>
>\x/ill :-}
>
>
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--
Brane Čibej <brane_at_xbc.nu> http://www.xbc.nu/brane/
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Received on Sat Oct 21 14:36:57 2006