Extracting web links from string

I advise regular expressions.

Freeware for Delphi
http://regexpstudio.com/TRegExpr/TRegExpr.html

This is an example of regular expression from TRegExpr test program for extracting URL from text.

(?i)                          # we need caseInsensitive mode
(FTP|HTTP)://                 # protocol
([_a-z\d\-]+(\.[_a-z\d\-]+)+) # TCP addr
((/[ _a-z\d\-\\\.]+)+)*       # unix path

I advise regexpr because he wrote
"I need only those web links that match special code or text."

Yes you are right, regexp is much more advanced, but i've used it some times and still have not gotten all the hang of it.

Kunfufaresi with your code I can`t extract links from this type of string:

<table border=0 cellpadding=0 cellspacing=0 bgcolor=ffffff><tr><td><a href="http://www.bythebeachemails.com/scripts/runner.php?PA=116" target=_ptc onclick="javascript:reloadpage(30)"><img src=http://www.bythebeachemails.com/scripts/runner.php?REDIRECT=http%3A%2F%2Fmpam2.free.fr%2Fcash%2Fbann_cash2.gif alt="Great PTR/PTC sites" width=468 height=60 border=0></a></td></tr></table>The ad above is worth 50 cent(s)<br><br><br><br><br><b>1</b><br> <br>

And I only need to extract those links witch match for example this code: "scripts/runner.php?PA="

Hello,

well if you did a

if pos('scripts/runner.php?PA=',copy(s,1,i-1))>0 then listbox1.items.add(copy(s,1,i-1));

also you should in this case look for pos('"',s) instead of pos(' ',s) as " terminates the url not space.

As mokule said i suggest you to use regular expressions. Here is some usefull stuff http://www.regular-expressions.info/ and if you will search for regular expressions in www.torry.ru, you may found some freeware components.

Regards,