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( #3333=superdoc: print w/replies, xml ) Need Help??
Why set the length of the array only to change it immediately? I also hate the needless use of global vars.
my @path = '.'; while (<DATA>) { chomp; my ($prefix, $node) = /^((?:\| )*[|`]-- )(.+)/ or next; $#path = length($prefix)/2 - 1; $path[-1] = $node; print $prefix, join("/" => @path), "\n"; }
Alternative, we could use splice.
my @path = '.'; while (<DATA>) { chomp; my ($prefix, $node) = /^((?:\| )*[|`]-- )(.+)/ or next; splice @path, length($prefix)/2-1, 0+@path, $node; print $prefix, join("/" => @path), "\n"; }

It avoids the addition of magic to @path, and it combines two operations. The latter usually makes something more readable, but it's unfortunately not the case here.

Speaking of readability, that regex is rather hard to read. I had something like that initially, but I switched to split because it was much more straightforward.

my @path = '.'; while (<DATA>) { chomp; my ($prefix, $node) = split(/(?<=-- )/, $_, 2) or next; $#path = length($prefix)/2 - 1; $path[-1] = $node; print $prefix, join("/" => @path), "\n"; }

In reply to Re^2: reparse tree in textfile by ikegami
in thread reparse tree in textfile by myuserid7

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