regexp in .net

[adrianca]

Hi All,
Im trying to parse a file to find all occurance of strings inside
square brackets eg: "[item] kllkj ljlj ljlj [item 1] ljl [item 2]"
would return "item,item 1,item 2".

To me this seemed like this type of problem was made for regexp.

But i havent done regexp for years, and i need some good site or
pointers to example regexp code in c# but i cant many example out on
google. :o(

my regexp so far only find one occurance "[item]" using
'\[[a-z\.]+\b+\]'.

To me this stuff in mind boggleing, does anyone have a good site or a
good mind for this.

Thanks
slyi

[Oliver Sturm]

ad******@gmail.com wrote:

Im trying to parse a file to find all occurance of strings inside
square brackets eg: "[item] kllkj ljlj ljlj [item 1] ljl [item 2]"
would return "item,item 1,item 2".

To me this seemed like this type of problem was made for regexp.

But i havent done regexp for years, and i need some good site or
pointers to example regexp code in c# but i cant many example out on
google. :o(

my regexp so far only find one occurance "[item]" using
'\[[a-z\.]+\b+\]'.

The expression \[[^\]]*\] will match all strings in brackets, by returning
multiple matches. If you'd rather have a single match with multiple
captures, you'd need to use (\[[^\]]*\])* instead.

Testing for multiple captures may be faster - I have once written a blog
article about this distinction:
http://www.sturmnet.org/blog/archive...ches-captures/

Oliver Sturm
--
omnibus ex nihilo ducendis sufficit unum
Spaces inserted to prevent google email destruction:
MSN oliver @ sturmnet.org Jabber sturm @ amessage.de
ICQ 27142619 http://www.sturmnet.org/blog

[adrianca]

Thank that was exactly what i need.
Could you recommend any good sites / tutorials for regexp as its an
area im poor at and would like to improve on?

[Oliver Sturm]

ad******@gmail.com wrote:

Thank that was exactly what i need.
Could you recommend any good sites / tutorials for regexp as its an
area im poor at and would like to improve on?

Sorry, I can't recommend anything specific. I learnt it all a long time
ago from documentation and examples of Unix sed and Perl, which I think
are quite good - but many of their samples are for sed and Perl,
obviously, which doesn't make them a very good resource for somebody
wanting to use regular expressions in .NET. Two nice (and short) primers
are here: http://www.developer.com/lang/article.php/3330231 and here:
http://www.futureone.com/~sponge/tut...xOverview.html , but
this is really basic stuff. This is a good book, but it also uses Perl as
the programming language around the regular expressions:
http://www.oreilly.com/catalog/regex/

When you are becoming a little better with regexes, it's probably best if
you set yourself some tasks and try to ask about the details - or compare
your results to published resources like http://www.regexlib.com/

Finally, of course, for the exact detailed definition of regular
expressions in .NET, you should use the MSDN pages:
http://msdn.microsoft.com/library/de...xpressions.asp
Oliver Sturm
--
omnibus ex nihilo ducendis sufficit unum
Spaces inserted to prevent google email destruction:
MSN oliver @ sturmnet.org Jabber sturm @ amessage.de
ICQ 27142619 http://www.sturmnet.org/blog

[adrianca]

Thanks i always feel im missing out on a powerful tool, understanting
even basic regexp can a huge help for text processing.