From: Peter Bailey <pbailey@...>
Date: 2008-01-04T04:28:34+09:00
Subject: Why doesn't this file read work for me?

Hi,
I need to open files, just the first 75 bytes of them, and determine if
there's a string in the data. If the string is there, then, I do
something. If not, then I do something else.

Here's my IRB try. I don't understand why it's coming back to me with a
positive, meaning, it seems to see the string, when, the string
definitely isn't in the file.

Thanks,
Peter


L:\eps\fedreg>irb
irb(main):001:0> stuff = File.open("f3153013.eps") { |f| f.read(75) }
=> "%!PS-Adobe-3.0 EPSF-3.0\n%%BoundingBox: 0 0 552
704\n%%HiResBoundingBox: 0.00"
irb(main):002:0> if stuff.to_s.scan(/^\%\%Creator: MathType/) then
irb(main):003:1* puts "MathType file."
irb(main):004:1> else
irb(main):005:1* puts "NOT MathType file."
irb(main):006:1> end
mathtype file.
=> nil
irb(main):007:0>
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