Parsing Experts!!! Need help.

[zynder]

Hello guys! Im having trouble parsing this file although it's a bit easy i can't get it neat and fast. Any suggestion is well appreciated.

Here is my sample text file.

Name <1:WALKER, JOHNNY>
File Number <2:123456>
Record Number <3:111111>
Filename: WALKER, JOHNNY_123456_111111 script.txt
<End>

CASE: 0001
NAME: JOHNNY WALKER
RECORD NUMBER: 111111
Description is here. The quick brown fox jumps over the lazy dog. Blah blah blah.

CASE: 0002
NAME: JACKIE CHAN
RECORD NUMBER: 222222
Pneumonoultramicroscopicsilicovolcanoconiosis.

CASE: 0003
NAME: JET LI
RECORD NUMBER: 333333
Lol lol lol lol lol lol lol.

CASE: 0004
NAME: WONG FEI HONG
RECORD NUMBER: 444444
Any random description here.

I need to separate this file into 4 textfiles however the header must be changed according to the name, record number and description. Don't bother the case number and the Filenumber is the same for all of them.

Case 001 have already the correct header. So it will be saved as "WALKER, JOHNNY_123456_111111 script.txt"

Name <1:WALKER, JOHNNY>
File Number <2:123456>
Record Number <3:111111>
Filename: WALKER, JOHNNY_123456_111111 script.txt
<End>

CASE: 0001
NAME: JOHNNY WALKER
RECORD NUMBER: 111111
Description is here. The quick brown fox jumps over the lazy dog. Blah blah blah.

Case 002 shoud be saved as "CHAN, JACKIE_123456_222222 script.txt" and the header should be replaced accordingly.

Name <1:CHAN, JACKIE>
File Number <2:123456>
Record Number <3:222222>
Filename: CHAN, JACKIE_123456_222222 script.txt
<End>

CASE: 0002
NAME: JACKIE CHAN
RECORD NUMBER: 222222
Pneumonoultramicroscopicsilicovolcanoconiosis.

and so on and so forth. the cases could reached up to 30 cases that's why im looking for an elegant way of doing this or even faster.

So there's one file and the output would be 4 files in that case.

Thank you and God bless!