hubertf's NetBSD Blog
Send interesting links to hubert at feyrer dot de!
[20051111] Implementing basename(1) (Update #1)
Quiz: rewrite basename(1) using expr(1)
Solution: see Solaris' /bin/basename

Can't post the solution here due to copyright constraints but one first has to come to the idea of implementing all this in one (1) expr(1) call. Neat!

Thinking about the runtime impact, it seems that an empty loop of 1000 iterations takes 2.39s on my machine here, one that calls NetBSD's /bin/basename for 1000 times takes 3.87s and running the shell/expr based implementation takes 7.90s ... i guess that's a reason for staying with the current binary implementation!

Update #1: Michael Engel(?) wrote me mail pointing me at the OpenSolaris CVSweb server for having a look at the Solaris basename(1) implementation. Interesting to see that there's an (obviously unused???) C version.

[Tags: ]

Disclaimer: All opinion expressed here is purely my own. No responsibility is taken for anything.

Access count: 32169635
Copyright (c) Hubert Feyrer