Anvende grupper til at løse et 1-n problem

Hej

Jeg skriver bedst på engelsk, håber det er ok. Ellers bed mig om at oversætte. :)


I have some data which has a structure something like this:

Header 1
- Item 1
- Item 2
- Item 3

Header 2
- Item 4
- Item 5

Header 3
- Item 6
- Item 7
- Item 8
- Item 9

Getting all headers is easy
Getting all items is easy
Getting a list of which items belong to which headers is... less than easy (for me anyway). ;)

I want to execute a regular expression and get 9 matches like this:

Header 1 - Item 1
Header 1 - Item 2
Header 1 - Item 3
Header 2 - Item 4
Header 2 - Item 5
Header 3 - Item 6
Header 3 - Item 7
Header 3 - Item 8
Header 3 - Item 9

...With the header in group 1 and the item in group 2. Is that possible? If so, how?

Any help would be greatly appreciated! :)

Thanks in advance