Hi, Ted!
On Tue, Jul 15, 2008 at 12:28 PM, Ted Kremenek <[EMAIL PROTECTED]> wrote:
> Quote file names to better handle paths with spaces.
I'll tell you how I handle this issue. Spaces are by far the most
common problem, but there's also a chance that a path could shell
meta-characters.
In Perl, the difference between backticks and the system() function is
that the former allows you to capture a program's output and the
latter lets you avoid invoking the system shell--if you give it a
list. Because you're not capturing any output, you could easily do
the latter.
By default, the system() function passes its argument to a sub-shell
if it detects any shell meta-characters. (This
avoiding-a-sub-shell-if-possible behavior is simply an optimization.)
However, if you pass system() a list, it will always execute those
arguments directly. So, for instance, `mv $fname.tmp $fname` could be
replaced with system("mv", "$fname.tmp", $fname). Spaces,
single-quotes, double-quotes, dollar signs, etc are no longer a
problem.
Sam Bishop
_______________________________________________
cfe-commits mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits
