Proposal for std.path replacement

[spir]

On 03/06/2011 09:37 AM, Rainer Schuetze wrote:
> Looks good overall. I have a few comments and nitpicks though:

I think all your questions are sensible, Rainer.

>>    basename("dir/subdir/")             -->  "subdir"
>>    directory("dir/subdir/")      -->  "dir"
>
> Is this what everybody expects? I'm not sure, but another possibility would be
> to treat these as if "dir/subdir/." is passed. What is the result of
> directory("/") or directory("d:/")?

Depends. We must make clear whether such funcs work:
1. indifferently for file and dir names, in which case we get the above results,
2. differently for file & dir names, in which case we would have "dir/subdir/" 
as result of both operations above,
3. only for file names, in which case we throw an error when these functions 
are called on dir names.

I find both solutions 1. and 2. conceptually problematic; the second one only a 
bit less. Maybe the only sensible choice is 3.?

>>    extension("file")               -->  ""
>>    extension("file.ext")           -->  "ext"
>
> What about "file."? I tried it on NTFS, but trailing '.' seems to always be cut
> off. Is it possible to create such a file on unix systems? If yes, you won't be
> able to recreate it from the result of basename() and extension().

This is /really/ problematic, indeed! The splitting operation *must* be 
reversable in all cases. In other other words, file name/path recomposition 
must be symmetric of splitting it.

> What about network shares like "\\server\share\dir\file"? Maybe it should also
> be shown in the examples? Does the "\\server" part need special consideration?

I think there should be a special case similar to windows drive names. Maybe, 
instead of a notion of drive, have a notion of 'device', which could then cover 
network connexion. Then, a full file path/name would be composed of:
	deviceName | dirName || baseName | extension
One issue is defining the appropriate 'joint'/sep between deviceName & dirName. 
(See split <--> recomposition above.)

What do you think?


Denis
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