Re: replace strtok()

On 24.06.24 02:34, Michael Paquier wrote:
> On Sat, Jun 22, 2024 at 11:48:21AM -0400, Tom Lane wrote:
>> Peter Eisentraut <peter@eisentraut.org> writes:
>>> On 18.06.24 13:43, Ranier Vilela wrote:
>>>> I found another implementation of strsep, it seems lighter to me.
>>>> I will attach it for consideration, however, I have not done any testing.
>>
>>> Yeah, surely there are many possible implementations.  I'm thinking,
>>> since we already took other str*() functions from OpenBSD, it makes
>>> sense to do this here as well, so we have only one source to deal with.
>>
>> Why not use strpbrk?  That's equally thread-safe, it's been there
>> since C89, and it doesn't have the problem that you can't find out
>> which of the delimiter characters was found.
> 
> Yeah, strpbrk() has been used in the tree as far as 2003 without any
> port/ implementation.

The existing uses of strpbrk() are really just checking whether some 
characters exist in a string, more like an enhanced strchr().  I don't 
see any uses for tokenizing a string like strtok() or strsep() would do. 
  I think that would look quite cumbersome.  So I think a simpler and 
more convenient abstraction like strsep() would still be worthwhile.