Re: Regexp to match an URL in an HTML <a href=""></a> tag

From: Andy R (andrew_rowland_at_hotmail.com)
Date: 11/15/03

  • Next message: Tom McCarthy: "Hexadecimal date format" 
    Date: Sat, 15 Nov 2003 11:58:12 GMT

    "Charles Nadeau" <charlesnadeau@hotmail.com> wrote in message
    news:bp483h$1gv0$1@nwall1.odn.ne.jp...
    > Hello,
    >
    > I am trying to craft a regular expression to filter an URL from a <a
    > href=""></a> tag and the one I have doesn't seen right.
    > I use the regular expression from this snippet of code:
    >
    > foreach my $message (@messages)
    > {
    > my @match=($message->decoded=~/\bhref="(http.*)">.*/gi);
    >
    > foreach my $match(@match)
    > {
    > print $match,"\n";
    > }
    >
    > }
    >
    > but it doesn't lead to results that are exactly what I need. An excerpt of
    > what I get as an output looks like:
    >
    > http://2%30%33.197.%3204.1%355/mout/
    > http://www.superrxsalesman.info/aff1/?mulish
    > http://www.superrxsalesman.info/aff1/?acme
    > http://www.superrxsalesman.info/aff1/?blister
    > http://www.superrxsalesman.info/aff1/?samba
    > http://www.superrxsalesman.info/aff1/?depot"><font color="#0033CC
    > http://www.superrxsalesman.info/aff1/?procter"><font color="#0033CC
    > http://www.superrxsalesman.info/aff1/?use"><font color="#0033CC
    > http://www.superrxsalesman.info/aff1/?butane"><font color="#0033CC
    > http://www.superrxsalesman.info/aff1/?fiche"><font color="#0033CC
    >
    > The first 5 lines are exactly what I want but I don't understand why in
    the
    > following lines I get characters after and including ". I want basically
    to
    > keep what is in between the "" of the <href=""> tag.
    > Could anybody tell me what is wrong with my regular expression?
    > Thanks!
    >
    > Charles
    >
    > --
    > Charles-E. Nadeau Ph.D
    > http://radio.weblogs.com/0111823/

    Use a ? to perform a non-greedy match ie:

    my @match=($message->decoded=~/\bhref="(http.*?)">.*/gi);

    Should work, though I've not tested it.

    Andy R

  • Next message: Tom McCarthy: "Hexadecimal date format"

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