NAME

       URI::Heuristic - Expand URI using heuristics

SYNOPSIS

        use URI::Heuristic qw(uf_uristr);
        $u = uf_uristr("example");          # http://www.example.com
        $u = uf_uristr("www.sol.no/sol");   # http://www.sol.no/sol
        $u = uf_uristr("aas");              # http://www.aas.no
        $u = uf_uristr("ftp.funet.fi");     # ftp://ftp.funet.fi
        $u = uf_uristr("/etc/passwd");      # file:/etc/passwd

DESCRIPTION

       This module provides functions that expand strings into real absolute URIs using some
       built-in heuristics.  Strings that already represent absolute URIs (i.e. that start with a
       "scheme:" part) are never modified and are returned unchanged.  The main use of these
       functions is to allow abbreviated URIs similar to what many web browsers allow for URIs
       typed in by the user.

       The following functions are provided:

       uf_uristr($str)
           Tries to make the argument string into a proper absolute URI string.  The "uf_" prefix
           stands for "User Friendly".  Under MacOS, it assumes that any string with a common URL
           scheme (http, ftp, etc.) is a URL rather than a local path.  So don't name your
           volumes after common URL schemes and expect uf_uristr() to construct valid file: URL's
           on those volumes for you, because it won't.

       uf_uri($str)
           Works the same way as uf_uristr() but returns a "URI" object.

ENVIRONMENT

       If the hostname portion of a URI does not contain any dots, then certain qualified guesses
       are made.  These guesses are governed by the following environment variables:

       COUNTRY   The two-letter country code (ISO 3166) for your location.  If the domain name of
                 your host ends with two letters, then it is taken to be the default country. See
                 also Locale::Country.

       HTTP_ACCEPT_LANGUAGE, LC_ALL, LANG
                 If COUNTRY is not set, these standard environment variables are examined and
                 country (not language) information possibly found in them is used as the default
                 country.

       URL_GUESS_PATTERN
                 Contains a space-separated list of URL patterns to try.  The string "ACME" is
                 for some reason used as a placeholder for the host name in the URL provided.
                 Example:

                  URL_GUESS_PATTERN="www.ACME.no www.ACME.se www.ACME.com"
                  export URL_GUESS_PATTERN

                 Specifying URL_GUESS_PATTERN disables any guessing rules based on country.  An
                 empty URL_GUESS_PATTERN disables any guessing that involves host name lookups.

COPYRIGHT

       Copyright 1997-1998, Gisle Aas

       This library is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.