if it is a perl based regular expression to extract a URL
that you want, I have a line from Kehei.com wiki.pl (the non rebol one)
that will find a URL either at beginning of a line, after a space or
after a * or - . It also stops the parse at a space or a tag (<) start.
# Handle embedded URLs
s@(^|[\-\*\s])((news|http|ftp|gopher|https)\://([^\s<]+))@$1\<A
href\=\"$2" target=\"_top\"\>$2<\/A\>@go;
note that @ was used as a delimiter since nearly every other
punctuation char was used already in the innards.
s/match/repl/go; is
s@match@repl@go;
a discussion about doing regular expressions can be found
in the rebol email archives at
ThreadHead: http://rebol.org/userlist/archive/83/585.html
ThreadTail: http://rebol.org/userlist/archive/86/224.html
;# mailto: [EMAIL PROTECTED]
At 02:31 PM 9/23/00 +0200, [EMAIL PROTECTED] wrote:
>Hello,
>
>I'm frustrating myself terribly, trying to extract an URL using regular
>expressions from the following string:
>
>"bla
><http://www.yahoo.com/blabla.html?this=insane>http://www.yahoo.com/blabla.html?this=insane
>
>- bla bla"
>
>Now how do I do that? I've tried and failed miserably, this is where I
>got: (<http://|www>http://|www).*
>
>Which prints out
>"<http://www.yahoo.com/blabla.html?this=insane>http://www.yahoo.com/blabla.html?this=insane
>
>- bla bla" - damn these regular expressions! Rebol's 'parse is way better
>for this kind of thing, at least I can get 'parse to stop at the first space!
>
>Thanks in advance!
>
>Regards,
>Rachid
