From: Alpha Blue <jdezenzio@...>
Date: 2009-12-03T04:15:15+09:00
Subject: Need help with writefile line ranges within extensive file

Hi Everyone,

I have the following file that I started to work on:

class EuiiiReader

  def initialize(writefile,filename)
    @writefile = writefile
    @filename = filename
    @provnum = /^\d{1,4}\=\{/
  end

  def readfile
    File.open(@filename, "r") do |infile|
      @linenumarray = []
      while (line = infile.gets)
        if (line =~ @provnum)
          linenum = $.
          @linenumarray += [linenum]
        end
      end
    end
  end

  def writefile
    open(@writefile, "w") { |f|
      f.puts "Verifying File..."
      f.puts "================="
      File.open(@filename, "r") do |infile|
        while (line = infile.gets)
        # Need help here
        # @linenumarray contains all of the starting file lines
        # I need to output the lines + 8 lines after each one listed in
the array to an output file
        f.puts "Something to do here"
        end
      end
    }
  end
end

k = EuiiiReader.new('compare.txt', 'Italy_alternate.eu3')
k.readfile
k.writefile

=============

Here is my issue.  I'm still trying to get better with utilizing Ruby in
various situations.  Since I read a lot of files and love file readers,
I thought I would concentrate on this.

I have a simple saved game file from Europa Universallis III which
contains approximately 850,000 lines.  The saved game file is currently
corrupt and I believe I know the issue and need to have a more permanent
fix in place for if it happens again.

The file will look something similar in certain segments:

....

1={
    flags={
    }
    variables={
    }
    name="Stockholm"
    owner="SCA"
    controller="SCA"
    core="SWE"
    core="SCA"
    culture=swedish

....

My class above starts with reading the entire file and locating province
number lines for 1={, 2={, etc. etc. to say 1894={.  When it finds these
lines, it stores the line numbers into an array called @linenumarray.
This is done in the readfile method.

In the writefile method, I need to output to file the line and the next
8 lines after it for every line number stored in the array.  So, the
file would be written to:

Verifying File...
=================
1={
    flags={
    }
    variables={
    }
    name="Stockholm"
    owner="SCA"
    controller="SCA"
    core="SWE"
2={
    flags={
    }
    variables={
    }
    name="Stockholm"
    owner="SCA"
    controller="SCA"
    core="SWE"
etc....

My problem is I don't know how to pull the line number from the array
and attach another 8 lines to it.  The commented section in the
writefile method is where the placement should occur.

Again, as this is a learning process for me, whatever best practices
should be used instead of what I've written would also be greatly
appreciated.  I want to make sure I simplify and expand upon my
knowledge and not do things incorrectly.  As ruby is a wonderful
language with many ways of achieving an end result, I might be taking a
more sloppy approach and for that I apologize.

Any help would be greatly appreciated.

Thanks,
-- 
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