From: Phrogz <phrogz@...>
Date: 2007-07-11T22:19:57+09:00
Subject: Re: Simple string operation

On Jul 9, 8:54 pm, 12 34 <rubyfo...@web.knobby.ws> wrote:
> seqNo =
> File.basename("/Volumes/MINOLTA1/DCIM/100MLT16/PICT0004.MOV",".*")[-1,3].to _s
> seqNo = "-" + seqNo+ ".xx.m"
> puts "seqNo: #{seqNo} " # >> seqNo: -4.xx.m
>
> but I want it to be -004.xx.m. In other words I want the leading zeros.

Slim2:~ phrogz$ irb
irb(main):001:0> path = "/Volumes/MINOLTA1/DCIM/100MLT16/PICT0004.MOV"
=> "/Volumes/MINOLTA1/DCIM/100MLT16/PICT0004.MOV"
irb(main):002:0> digits = path[ /(\d+)\.\w+$/, 1 ]
=> "0004"
irb(main):003:0> my_seq = "%03d" % digits.to_i
=> "004"