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/*
* Copyright 2020, 2021 KRR Oxford
*
* 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.
*/
package uk.ac.ox.cs.rsacomb
import scala.collection.mutable.Map
import util.Logger
case class RSAOption[+T](opt: T) {
def get[T]: T = opt.asInstanceOf[T]
}
object RSAConfig {
type Config = Map[Symbol, RSAOption[Any]]
private implicit def toRSAOption[T](opt: T) = RSAOption[T](opt)
/** Help message */
private val help: String = """
rsacomb - combined approach for CQ answering for RSA ontologies.
USAGE
rsacomb [OPTIONS] <ontology> [<data> ...]
-h | -? | --help
print this help message
-l | --logger <level>
specify the logger verbosity. Values are: quiet, normal (default),
debug, verbose.
-a | --answers <file>
path to the output file for the answers to the query (in JSON
format)
-q | --queries <file>
path to a file containing a single SPARQL query. If no query
is provided, only the approximation to RSA will be performed.
-o | --ontology <file>
ontology file in OWL format.
-d | --data <file>
data files to be used alongside the ontology file. If a
directory is provided, all files in the directory (recursively)
will be considered.
"""
/** Default config values */
private val default: Config = Map.empty
/** Utility to exit the program with a custom message on stderr.
*
* The program will exit with error code 1 after printing the help
* message.
*
* @param msg message printed to stderr.
*/
private def exit(msg: String): Nothing = {
System.err.println(msg)
System.err.println()
System.err.println(help)
sys.exit(1)
}
private def getPath(str: String): os.Path =
try {
os.Path(str, base = os.pwd)
} catch {
case e: IllegalArgumentException =>
exit(s"'$str' is not a well formed path.")
}
/** Parse arguments with default options
*
* @param args arguments list
* @return map of config options
*/
def parse(args: List[String]): Config = parse(args, default)
/** Parse arguments
*
* @param args arguments list
* @param config default configuration
* @return map of config options
*/
def parse(args: List[String], config: Config): Config = {
args match {
case Nil => finalise(config)
case flag @ ("-h" | "-?" | "--help") :: _ => {
println(help)
sys.exit(0)
}
case flag @ ("-l" | "--logger") :: _level :: tail => {
val level = _level match {
case "quiet" => Logger.QUIET
case "debug" => Logger.DEBUG
case "verbose" => Logger.VERBOSE
case _ => Logger.NORMAL
}
parse(tail, config += ('logger -> level))
}
case flag @ ("-a" | "--answers") :: answers :: tail =>
parse(tail, config += ('answers -> getPath(answers)))
case flag @ ("-q" | "--queries") :: _query :: tail => {
val query = getPath(_query)
if (!os.isFile(query))
exit(s"'${_query}' is not a valid filename.")
parse(tail, config += ('queries -> query))
}
case flag @ ("-o" | "--ontology") :: _ontology :: tail => {
val ontology = getPath(_ontology)
if (!os.isFile(ontology))
exit(s"'${_ontology}' is not a valid filename.")
parse(tail, config += ('ontology -> ontology))
}
case flag @ ("-d" | "--data") :: _data :: tail => {
val data = getPath(_data)
val files =
if (os.isFile(data))
Seq(data)
else if (os.isDir(data))
os.walk(data).filter(os.isFile)
else
exit(s"'${_data}' is not a valid path.")
parse(tail, config += ('data -> files))
}
case a => exit(s"Invalid sequence of arguments '${a.mkString(" ")}'.")
}
}
/** Perform final checks on parsed options */
private def finalise(config: Config): Config = {
if (!config.contains('ontology))
exit("The following flag is mandatory: '-o' or '--ontology'.")
if (!config.contains('data))
config += ('data -> List.empty[os.Path])
config
}
}
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