Try this: 
echo "/home/code/work" |\
perl -nle 'chomp; print $p .= $& while m{ \G (?: [^/]* /+ | [^/]+ \z )
+ }xg'

[download]
The m/\G.../g match can be called several times, and each time it will start at the position where last time it left off.

However be aware, that this one-liner produces a little different tree than your example, but probably you want to represent the real file system tree and this result is a better representation of it.

In reply to Re: Regular expression parse pathname by rubasov
in thread Regular expression parse pathname by unixguy

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