On 2024-09-12 12:03, Pádraig Brady wrote:
This is tricky enough, that we should be as restrictive as possible here, so I may resort to strspn(f, "0123456789") to parse instead. I'll think a bit about it.
The code's also assuming INT_MAX < INTMAX_MAX, which POSIX doesn't require. You could put in a static_assert to that effect, I suppose, to document the assumption.
More important, though, if you're not in the C locale all bets are off as far as what strtoimax will also parse.
When I ran into this problem with GNU tar, I ended by giving up on strtoimax and did my own little integer parser. It does exactly what I want and I don't have to fire up the strtoimax complexity+locale engine.