From: Dan George <endege@...>
Date: 2007-09-19T22:10:06+09:00
Subject: YAML & readlines & modify text files

Hello,

Can anyone help me with the following issue:

I have a YAML file that looks like this:

---
gm: Name01
gs: N01
---
gm: Name02
gs: N02

In ruby I'm trying to read all *.txt files in the current folder and
all sub-folders. The text files look like this:

Name-line: Name01
Link-line: blabla.something.N01&=bla

Name-line: Name02
Link-line: blabla.something.N02&=bla

My ruby code looks like this:

require 'yaml'
lnk = 'blabla.something.'
op = '&=bla'

name = File.open('name.yaml')
yp = YAML::load_documents(name) do |name|
    txt_files = Dir.glob('**/*.txt').each do |path|
            file = File.open(path).readlines.each { |line|

                   if line.match(/Link-line/)
                      then line.gsub!(/Link-line.*/, 'Link-line: '+
lnk + name['gs'] + op)
                   end
            }

    File.open(path, 'w'){|f| f.write file}
    end
end


My problem is that the code replaces the YAML value 'gs' with the last
value found in the *.txt values.

I want it to read the Name-line in each file and after that use the
appropriate 'gs' value from the YAML file in "line.gsub!(/Link-
line.*/, 'Link-line: '+ lnk + name['gs'] + op)" with the Link-line
field.

I've been trying to find a way for some time now but I just can't seem
to be able to do it and I'm starting to have headaches :) so if anyone
has any ideas or improvements or critiques please don't hesitate to
reply.

Cheers :)