[fpc-pascal] Record helpers on built in types?

[Anthony Walter]

Okay, no problems Sven. Thanks again for doing what you've done. I feel
like the class helpers on built ins is so great already. By the way, after
adding in some I decided to write an FTP client implementation using
StringHelper to great effect. Here's how it worked out (and fully tested):

http://www.getlazarus.org/helpers/ftpclient/

When you remove the comments it's probably around only 500 lines and was
easy to implement thanks to helper methods like Contains, Between, Split,
Pop, Words.

Example from PASV command:

'227 Entering Passive Mode (157,28,148,37,129,44)'

Becomes (at line 430):

Values := S.Between('(', ')').SplitInt(','); // Values now is array of 6
integers

Example from LIST command:

'lrwxrwxrwx    1 0        0               3 Jul 02  2013 public -> pub'

Becomes (at line 637):

Columns := S.Words(9); // Columns is now an array of 9 trimmed strings

It's so easy now!
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