NAME¶
URI::Heuristic - Expand URI using heuristics
SYNOPSIS¶
use URI::Heuristic qw(uf_uristr);
$u = uf_uristr("perl"); # http://www.perl.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.