From: daz <dooby@...10.karoo.co.uk>
Date: 2003-07-23T15:02:31+09:00
Subject: Re: Should String#strip take a parameter?


"Xiangrong Fang" <xrfang@hotmail.com> wrote:

> Hi,
>
> I have a question regarding strip. I wrote a DLL in other language, and
> used the following  to call the dll function in ruby:
>
> arg = " " * 100
> myfunc.Call(arg)
>
> after that arg may contain a string such as:
>
> "return value\000"
>
> I used strip, but the strip does not strip away terminating null
> character...
>
> Am I doing something wrong? If I suggest that strip should also strip
> the \000, is it a good idea or not?
>
> Shannon
>

The only reason for thinking #strip might be relevant
in this situation is that you initialised your buffer
with spaces.


class String
  def sz_cut!   #  cut at string-zero terminator
    replace(self[/\A[^\0]*/])
  end
end

p "return value\000  garbage".sz_cut!

#-> "return value"

.... works more generally.


But I can't see a problem with treating
"\0" as whitespace in #rstrip until the
day someone wants to pass it on as a
C-string, gets an error, then remembers
to add it back ;-)

  string << 0


daz