How to parse text file in Ruby on Rails -

below text file:

old count: 56 s id: 1 m id: 1  new count: 2 old count: 56 s id: 1 m id: 2 new count: 20 old count: 56 s id: 1 m id: 2 new count: 32 ----------------------------- old count: 2 s id: 2 m id: 1 new count: 4 -------------------------------- . . . . 

i have used delimiter "---------------" each ids.

how parse value such lines in delimiter "-----" new count added this: 2+20+32 = 54

hash array: count << {'new count' => 54} first block , on remaining blocks.

i have tried this..

begin f=file.open("out2", "r") f.each_line |line| @data+=line end  s_rec=@data.split("------") s_rec.each |rec| row_s=rec.split(/\n/)  row_s.each |row|    if r.include?"new count"     rv=row.split(":")     @db=rv[1]   end    end   end 

not sure output format trying achieve, given text:

text = <<__ old count: 56 s id: 1 m id: 1  new count: 2 old count: 56 s id: 1 m id: 2 new count: 20 old count: 56 s id: 1 m id: 2 new count: 32 ----------------------------- old count: 2 s id: 2 m id: 1 new count: 4 -------------------------------- . . . . __ 

this:

text .split(/^-{5,}/) .map{|s| s.scan(/\bnew count: (\d+)/).map{|match| match.first.to_i}.inject(:+)} 

gives:

[   54,   4,   nil ] 

---

in response comment, still not clear want because wrote not valid ruby object, this:

text .scan(/^s id: (\d+).+?^new count: (\d+)/m) .inject(hash.new(0)){|h, (k, v)| h[k.to_i] += v.to_i; h} .map{|k, v| {"s id" => k, "new count" => v}} 

gives:

[   {     "s id"      => 1,     "new count" => 54   },   {     "s id"      => 2,     "new count" => 4   } ]