This file is part of Logtalk https://logtalk.org/ SPDX-FileCopyrightText: 1998-2026 Paulo Moura <pmoura@logtalk.org> SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

`url`

This library implements validation, parsing, generating, and normalization of URLs, which can be represented as atoms, character lists, or code lists. It currently supports the following URL schemes:

Web protocols:

http
https
ws
wss
gopher File transfer and version control:
ftp
ftps
sftp
git File access:
file Databases:
jdbc
mongodb
mysql
postgresql Email and news:
mailto
news
nntp Media streaming:
mms
rtmp
rtsp Shell access:
ssh
telnet Directory services:
ldap
ldaps Other protocols:
tel
urn The library predicates are defined in the url(_Representation_) parametric object where _Representation_ can be one of:
atom - strings are represented as atoms
chars - strings are represented as lists of characters
codes - strings are represented as lists of character codes The parameter must be bound when sending messages to the object.

API documentation

Open the [../../apis/library_index.html#url](../../apis/library_index.html#url) link in a web browser.

Loading

To load all entities in this library, load the loader.lgt file:

| ?- logtalk_load(url(loader)).

Testing

To test this library predicates, load the tester.lgt file:

| ?- logtalk_load(url(tester)).