[ruby-talk:6828] The ruby way...

Wondering if someone could critique this code and give me the
"ruby way" of doing it.  Basically, what it does it get the
"level" of different items in a menu based on the amount
of whitespace before the item.   The code does function
properly, but I have a feeling I may be attacking this the
wrong way.

thanks,
-joe

def get_depths (string)
  lastv = -1
  i = 0
  depth = 0
  depths = []
  lens = {}
  # first get the depth of each line.
  string.each do |line|
    len = line =~ /^(\s+)/ ? $1.length : 0
    lens[i] = len
    i+=1
  end
  lens.sort {|a,b| a[1] <=>b[1]}.each do |k, v|
    if(v > lastv)
      depth+=1
    end
    lastv = v
    depths[k] = depth
#    print "k: #{k} v: #{v} d: #{depth}\n"
  end
  i=0
  string.each do |line|
    print depths[i], " #{line}"
    i+=1
  end
end

get_depths(<<EOF
text1@url1
  text2@url2
    text3@url3
      text3.1@url3.1
      text3.2@url3.2
         text4@url4
      text5@url5
         text6@url6
      text7@url7
      text8@url8
text9@url9
EOF
)

prints:
1 text1@url1
2   text2@url2
3     text3@url3
4       text3.1@url3.1
4       text3.2@url3.2
5          text4@url4
4       text5@url5
5          text6@url6
4       text7@url7
4       text8@url8
1 text9@url9