From: Dave Thomas <Dave@...>
Date: 2002-04-01T12:16:41+09:00
Subject: Re: Recursing thru directories?

Brad Cox <bcox@virtualschool.edu> writes:

> Could someone please provide the ruby idiom for visiting each file in
> a directory and its subdirectories? I'm missing something, obvious no
> doubt.

Brad:

There's File.find:

     require "find"
     Find.find("/etc/passwd", "/var/spool/lp1", ".") do |f|
       Find.prune if f == "."
       puts f
     end

     produces:

     /etc/passwd
     /var/spool/lp1
     /var/spool/lp1/status
     /var/spool/lp1/lock
     /var/spool/lp1/.seq

     The Find module supports the top-down traversal of a set of file paths.

     class methods:

     find ref.find( [ aName ]* ) {| aFileName | block }

          Calls the associated block with the name of every file and
          directory listed as arguments, then recursively on their
          subdirectories, and so on.

     prune ref.prune

          Skips the current file or directory, restarting the loop
          with the next entry. If the current file is a directory,
          that directory will not be recursively entered. Meaningful
          only within the block associated with Find::find.


Cheers


Dave