Public Methods¶

new

  my $finder = URI::Find->new(\&callback);
    

Creates a new URI::Find object.

&callback is a function which is called on each URI found. It is passed two arguments, the first is a URI object representing the URI found. The second is the original text of the URI found. The return value of the callback will replace the original URI in the text.

find

  my $how_many_found = $finder->find(\$text);
    

$text is a string to search and possibly modify with your callback.

Alternatively, "find" can be called with a replacement function for the rest of the text:

  use CGI qw(escapeHTML);
  # ...
  my $how_many_found = $finder->find(\$text, \&escapeHTML);
    

will not only call the callback function for every URL found (and perform the replacement instructions therein), but also run the rest of the text through escapeHTML(). This makes it easier to turn plain text which contains URLs into HTML (see example below).

Protected Methods¶

I got a bunch of mail from people asking if I'd add certain features to URI::Find. Most wanted the search to be less restrictive, do more heuristics, etc... Since many of the requests were contradictory, I'm letting people create their own custom subclasses to do what they want.

The following are methods internal to URI::Find which a subclass can override to change the way URI::Find acts. They are only to be called inside a URI::Find subclass. Users of this module are NOT to use these methods.

uri_re

  my $uri_re = $self->uri_re;
    

Returns the regex for finding absolute, schemed URIs (http://www.foo.com and such). This, combined with schemeless_uri_re() is what finds candidate URIs.

Usually this method does not have to be overridden.

schemeless_uri_re

  my $schemeless_re = $self->schemeless_uri_re;
    

Returns the regex for finding schemeless URIs (www.foo.com and such) and other things which might be URIs. By default this will match nothing (though it used to try to find schemeless URIs which started with "www" and "ftp").

Many people will want to override this method. See URI::Find::Schemeless for a subclass does a reasonable job of finding URIs which might be missing the scheme.

uric_set

  my $uric_set = $self->uric_set;
    

Returns a set matching the 'uric' set defined in RFC 2396 suitable for putting into a character set ([]) in a regex.

You almost never have to override this.

cruft_set

  my $cruft_set = $self->cruft_set;
    

Returns a set of characters which are considered garbage. Used by decruft().

decruft

  my $uri = $self->decruft($uri);
    

Sometimes garbage characters like periods and parenthesis get accidentally matched along with the URI. In order for the URI to be properly identified, it must sometimes be "decrufted", the garbage characters stripped.

This method takes a candidate URI and strips off any cruft it finds.

recruft

  my $uri = $self->recruft($uri);
    

This method puts back the cruft taken off with decruft(). This is necessary because the cruft is destructively removed from the string before invoking the user's callback, so it has to be put back afterwards.

schemeless_to_schemed

  my $schemed_uri = $self->schemeless_to_schemed($schemeless_uri);
    

This takes a schemeless URI and returns an absolute, schemed URI. The standard implementation supplies ftp:// for URIs which start with ftp., and http:// otherwise.

is_schemed

  $obj->is_schemed($uri);
    

Returns whether or not the given URI is schemed or schemeless. True for schemed, false for schemeless.

badinvo

  __PACKAGE__->badinvo($extra_levels, $msg)
    

This is used to complain about bogus subroutine/method invocations. The args are optional.

Old Functions¶

The old find_uri() function is still around and it works, but its deprecated.