Re: Convert absolute paths to relative paths

[Vin Shelton <acs@alumni.princeton.edu>]

Thanks, Bart!

  - vin

"Bart Schaefer" <schaefer@brasslantern.com> writes:

> On Apr 19,  7:49am, Vin Shelton wrote:
> }
> } Can anyone show me some nifty zsh hackery to convert a string
> } representing an absolute path into a relative path?  For example, if
> } my current $PWD is "/opt/build" and the path I want to convert is
> } "/opt/src/perl-5.6.1", I would like the result to be
> } "../src/perl-5.6.1".
>
> function relative {
>     emulate -L zsh
>     local up=.. down
>     # ! -d $up/$down accounts for symlinks in $PWD
>     while [[ ${PWD#$1} == $PWD || ! -d $up/$down ]]
>     do
> 	up=../$up
> 	if [[ -n $1:t ]]
> 	then
> 	    down=$1:t${down:+/$down}
> 	    1=$1:h
> 	fi
>     done
>     print $up/$down
> }
>
> -- 
> Bart Schaefer                                 Brass Lantern Enterprises
> http://www.well.com/user/barts              http://www.brasslantern.com
>
> Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net