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# LV2 Log Extension
# Copyright 2012 David Robillard <d@drobilla.net>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix log:  <http://lv2plug.in/ns/ext/log#> .
@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .

<http://drobilla.net/drobilla#me>
	a foaf:Person ;
	foaf:name "David Robillard" ;
	foaf:mbox <mailto:d@drobilla.net> ;
	rdfs:seeAlso <http://drobilla.net/drobilla> .

<http://lv2plug.in/ns/ext/log>
	a lv2:Specification ;
	doap:name "LV2 Log" ;
	doap:shortdesc "A feature for writing log messages." ;
	doap:maintainer <http://drobilla.net/drobilla#me> ;
	lv2:documentation """
<p>This extension defines a feature, <a href="#log">log:log</a>, which allows
plugins to print log messages with an API much like the standard C printf
functions.  This allows, for example, plugin logs to be nicely presented to the
user in a graphical user interface.</p>

<p>Different log <q>levels</q> (e.g. <q>error</q> or <q>information</q>) are
defined by URI and passed as an LV2_URID.  Thus, the possible number of log
levels is unlimited, but implementations SHOULD use the levels defined in this
extension unless they have a special reason to do otherwise.</p>
""" .

log:Level
	a rdfs:Class ;
	lv2:documentation """
<p>A log level.  Subclasses of this class can be passed to LV2_Log_Log methods
to describe the nature of the log message.</p>""" .

log:Error
	a rdfs:Class ;
    rdfs:subClassOf log:Level ;
    rdfs:comment "An error" .

log:Info
	a rdfs:Class ;
    rdfs:subClassOf log:Level ;
    rdfs:comment "An informative message" .

log:Warn
	a rdfs:Class ;
    rdfs:subClassOf log:Level ;
    rdfs:comment "A warning" .

log:log
	a lv2:Feature ;
	lv2:documentation """
<p>A feature which plugins may use to log messages.  To support this feature,
the host must pass an LV2_Feature to LV2_Descriptor::instantiate() with URI
LV2_LOG_LOG_URI and data pointed to an instance of LV2_Log_Log.</p>
""" .