From: Sebastian Hungerecker <sepp2k@...>
Date: 2007-07-11T21:11:09+09:00
Subject: Re: if / else, how to include next line

Marc Hoeppner wrote:
> Ideally,the program would read this keyword-file, store the information
> in a variable (an array, I guess) and then use this array to identify
> the entries in the "main" file and puts them into stdout.

Something like this should work:

# Store the contents of keywords.txt in an array:
keywords=File.readlines("keywords.txt")

# Read main.txt, then create an array of arrays where the first element
# contains the KOG-line and the second contains the text up to the next
# KOG-line (or the end of the file). Then convert the whole thing into a hash:
hash=Hash[*File.read("main.txt").scan(/(KOG\d+\n)(.+?)(?=KOG|\Z)/m).flatten]

# For each keyword puts the corresponding text from the hash:
keywords.each { |keyword| puts keyword, hash[keyword] }


HTH
-- 
NP: Anathema - Pitiless
Ist so, weil ist so
Bleibt so, weil war so