Proposal for std.path replacement

[spir]

On 03/06/2011 12:50 PM, "Jérôme M. Berger" wrote:
> Rainer Schuetze wrote:
>> Looks good overall. I have a few comments and nitpicks though:
>>
>>>    basename("dir/subdir/")             -->   "subdir"
>>>    directory("dir/subdir/")      -->   "dir"
>>
> 	I would say:
> basename ("dir/subdir/") ->  "" (or ".")
> dirname  ("dir/subdir/") ->  "dir/subdir"
> basename ("dir/subdir")  ->  "subdir"
> dirname  ("dir/subdir")  ->  "dir"
>
> 	Same as Python does.
>
>> 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:/")?
>>
>>>    extension("file")               -->   ""
>>>    extension("file.ext")           -->   "ext"
>>
> extension ("file")     ->  ""
> extension ("file.ext") ->  ".ext"
> extension ("file.")    ->  "."
>
>> 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 solves the issue of recomposing a file path/name from its parts. But it's 
not what people mean, expect, and need with the notion of extension. We would 
have to remember this (weird) behaviour of the extension() function; and 
systematically write strip off starting '.'. Then, we get caught when the 
result is ""! Thus, we must add a check:
	extension = path.extension(foo);
	if (extension[0] == '.')
	    extension = extension[1..$];
Very nice...

Denis
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