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Re: Selectively replacing characters inside a string

by liverpole (Monsignor)
on Jun 11, 2009 at 01:28 UTC ( [id://770496]=note: print w/replies, xml ) Need Help??


in reply to Selectively replacing characters inside a string

Hi markkawika,

The first thing that comes to mind if you want to do it with regexes is to first capture the quoted part, and then change it:

use strict; use warnings; my $line = qq[file="path/goes/here"]; print "Line is '$line'\n"; if ($line =~ /^([^"]*)"([^"]*)"(.*)$/) { my ($prefix, $quoted, $suffix) = ($1, $2, $3); $quoted =~ s|[^/]|x|g; $line = qq[$prefix"$quoted"$suffix]; } print "Line is '$line'\n";

Another way, if you're sure that the expression ends with the quoted expression, would be something very simple like:

use strict; use warnings; my $line = qq[file="path/goes/here"]; print "Line is '$line'\n"; my @sections = split('"', $line); $sections[1] =~ s|[^/]|x|g; $line = join('"', @sections) . '"'; print "Line is '$line'\n";

Both result in:

Line is 'file="path/goes/here"' Line is 'file="xxxx/xxxx/xxxx"'

Both are less simple than your solution, of course, but keep things within Perl, without resorting to using the shell.


s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

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