Parse YAML to key value and include yaml categories - ruby

Question

Was looking to parse a YAML file into plain key=value strings.
I have some initial structure, but I wanted to get some of the keys from a yaml as well.
test:
line1: "line 1 text"
line2: "line 2 text"
line3: "line 3 text"
options:
item1: "item 1 text"
item2: "item 2 text"
item3: "item 3 text"
Ruby:
File.open("test.yml") do |f|
f.each_line do |line|
line.chomp
if line =~ /:/
line.chop
line.sub!('"', "")
line.sub!(": ", "=")
line.gsub!(/\A"|"\Z/, '')
printline = line.strip
puts "#{printline}"
target.write( "#{printline}")
end
end
end
The results currently look like
test:
line1=line 1 text
line2=line 2 text
line3=line 4 text
options:
item1=item 1 text
item2=item 2 text
item3=item 3 text
But I am looking to add the category before like:
test/line1=line 1 text
test/line2=line 2 text
test/line3=line 3 text
options/item1=item 1 text
options/item2=item 2 text
options/item3=item 3 text
What is the best way to include the category for each line?

Answer 1

You could use the YAML#load_file, read each line and adapt it to your need:
foo = YAML.load_file('file.yaml').map do |key, value|
value.map { |k, v| "#{key}/#{k}=#{v}" }
end
foo.each { |value| puts value }
# test/line1=line 1 text
# test/line2=line 2 text
# test/line3=line 3 text
# options/item1=item 1 text
# options/item2=item 2 text
# options/item3=item 3 text

Answer 2

You can easily convert YAML to a hash:
#test.yml
test:
line1: "line 1 text"
line2: "line 2 text"
line3: "line 3 text"
options:
item1: "item 1 text"
item2: "item 2 text"
item3: "item 3 text"
#ruby
hash = YAML.load File.read('test.yml')
Now you can do anything you want with the hash, get the keys, values etc.
hash['options']['item1'] #=> "item 1 text"
hash['test']['line1'] #=> "line 1 text"