From: Jet Koten <jetkoten@...>
Date: 2010-02-27T06:20:43+09:00
Subject: Regex for "not matching" an unneeded prefix substring?

Hi all,

I'm new to Ruby and even newer to regex. I'm trying to write my first
[useful] Ruby program and need a way to cut out an unneeded prefix
substring and retain the substring that comes after it.

Here are the actual details from my code:

result.each do |item|
  price = item.search(".price").text.match(/\d+[.]\d+/)
  condition = item.search(".condition").text.match(/Used - ([^,]+)/)
  rating = item.search(".rating a").text.to_i
  seller = item.search(".seller b").text
  puts "#{price} - #{condition} - #{rating} - #{seller}"
end

The one from condition [in the code above] is the one that is giving me
a challenge. The string that is sent to condition will always be exactly
one of the following and nothing else at all:

"Used - Like New"
"Used - Very Good"
"Used - Good"
"Used - Acceptable"

I'm trying to get them to display as the following in the puts at the
end of my code:

"Like New"
"Very Good"
"Good"
"Acceptable"

The regex that I've got there in the condition line works in Rubular,
but not in my code. I'm running 1.8.7 if that matters...

One last thing that I don't understand too is that in Rubular my regex
for price shows the match in the "Match result:" line, but the regex for
condition shows the whole string as a match in the "Match result:" line
but shows the correctlt matching substring in the "Match captures:"
line.

I'm grateful for this great resource (the list/forum) and would be very
happy to hear from anyone who can help me sort this out!

Thanks in advance,
J
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