On 09/24/2014 05:21 AM, monarch_dodra wrote:
> On Wednesday, 24 September 2014 at 10:35:29 UTC, Suliman wrote:
>> I can't understand how to use strip? For example I would like to cut
>> just extension.
>>
>> path = path.stripRight("exe");
>> Error: no overload matches for stripRight(C)(C[] str) if
>
> strip doens't work that way. It simply removes leading/trailing white.
>
> There's a version in std.algorithm which is more generic, but it accepts
> either a predicate, or an element, but not a range.
>
> Unfortunately, there is no generic function that allows striping of a
> specific ending range (though there are ways to either detect it, or
> strip it from the end).
> If you want something generic, then:
>
>      string path = "myFile.doc";
>      string extension = ".doc";
>      if (path.endsWith(extension))
>          path = path[0 .. $ - extension.length];
>
> Would work.

find() and friends can be used:

import std.algorithm;

void main()
{
    string path = "myFile.doc";
    string extension = ".doc";

    path = findSplitBefore(path, extension)[0];
    assert(path == "myFile");
}

And three retro()s make one modern(): :p

import std.algorithm;
import std.range;

void main()
{
    string path = "myFile.doc";
    string extension = ".doc";

    path = findSplitAfter(path.retro,
                          extension.retro)
           [1].retro;

    assert(path == "myFile");
}

Ali

On Wednesday, 24 September 2014 at 17:15:39 UTC, Ali Çehreli wrote:
> find() and friends can be used:
>
> import std.algorithm;
>
> void main()
> {
>     string path = "myFile.doc";
>     string extension = ".doc";
>
>     path = findSplitBefore(path, extension)[0];
>     assert(path == "myFile");
> }

I had thought of that, but then you might get in trouble with something like:
string path = "myPath.doc.old"

> And three retro()s make one modern(): :p
>
> import std.algorithm;
> import std.range;
>
> void main()
> {
>     string path = "myFile.doc";
>     string extension = ".doc";
>
>     path = findSplitAfter(path.retro,
>                           extension.retro)
>            [1].retro;
>
>     assert(path == "myFile");
> }
>
> Ali

That was the next one I had. Except here:
- You still run into issues if the extension is *not* .doc (and there happens to be a .doc somewhere in there).
- You are paying for a search, when you are only interested in testing a prefix.

I had thought of this though:
void main()
{
    string path = "myFile.doc";
    string extension = ".doc";

    auto rpath = path.retro();
    skipOver(rpath, extension.retro);
    path = rpath.retro();
    assert(path == "myFile");
}

The "issue" though is that skipOver modifies an rvalue, so it's not as "functional-style" as I would have liked it.

Anyways, the conclusion here (IMO), is that to manipulate paths, use std.path.

On Wednesday, 24 September 2014 at 10:28:05 UTC, Suliman wrote:
>>> string path = thisExePath()
>>
>> Seems like "dirName" in std.path is a good candidate ;)
>> http://dlang.org/phobos/std_path.html#.dirName
>>
>> You'll find many other path manipulation functions there.
>
> Thanks! But if I want to strip it, how I can cut it?
dirName gives the directory,  baseName the filename, stripExtension strips it, so seems like what you want is
dirName  ~ stripExtension( baseName )

On Friday, 26 September 2014 at 03:32:46 UTC, Jay Norwood wrote:
> On Wednesday, 24 September 2014 at 10:28:05 UTC, Suliman wrote:
>>>> string path = thisExePath()
>>>
>>> Seems like "dirName" in std.path is a good candidate ;)
>>> http://dlang.org/phobos/std_path.html#.dirName
>>>
>>> You'll find many other path manipulation functions there.
>>
>> Thanks! But if I want to strip it, how I can cut it?
> dirName gives the directory,  baseName the filename, stripExtension strips it, so seems like what you want is
> dirName  ~ stripExtension( baseName )

easier than that.  Looks like stripExtension handles the whole path.

assert (stripExtension("dir/file.ext")   == "dir/file");