validator/src/main/java/de/kosit/validationtool/cmd/CommandLineApplication.java

111 lines
4 KiB
Java

/*
* Copyright 2017-2022 Koordinierungsstelle für IT-Standards (KoSIT)
*
* 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 de.kosit.validationtool.cmd;
import static de.kosit.validationtool.impl.Printer.writeErr;
import static org.apache.commons.lang3.StringUtils.isNotEmpty;
import org.apache.commons.lang3.ObjectUtils;
import org.fusesource.jansi.AnsiConsole;
import org.fusesource.jansi.AnsiRenderer.Code;
import de.kosit.validationtool.cmd.report.Line;
import de.kosit.validationtool.impl.Printer;
import picocli.CommandLine;
import picocli.CommandLine.ParseResult;
/**
* Commandline interface of the validator. It parses the commandline args and hands over actual execution to
* {@link Validator}.
*
* This separated from {@link Validator} to configure the slf4j simple logging.
*
* @author Andreas Penski
*/
// performance is not a problem here
public class CommandLineApplication {
private CommandLineApplication() {
// main class -> hide constructor
}
/**
* Main.
*
* @param args die Eingabe-Argumente
*/
public static void main(final String[] args) {
AnsiConsole.systemInstall();
final ReturnValue resultStatus = mainProgram(args);
if (!resultStatus.equals(ReturnValue.DAEMON_MODE)) {
if (!resultStatus.equals(ReturnValue.HELP_REQUEST) && resultStatus.getCode() >= 0) {
sayGoodby(resultStatus);
}
System.exit(resultStatus.getCode());
} else {
Runtime.getRuntime().addShutdownHook(new Thread(() -> Printer.writeOut("Shutting down daemon ...")));
}
}
private static void sayGoodby(final ReturnValue resultStatus) {
Printer.writeOut("\n##############################");
if (resultStatus.equals(ReturnValue.SUCCESS)) {
Printer.writeOut("# " + new Line(Code.GREEN).add("Validation successful!").render(false, false) + " #");
} else {
Printer.writeOut("# " + new Line(Code.RED).add("Validation failed!").render(false, false) + " #");
}
Printer.writeOut("##############################");
}
// for testing purposes. Unless jvm is terminated during tests. See above
static ReturnValue mainProgram(final String[] args) {
ReturnValue resultStatus;
final CommandLine commandLine = new CommandLine(new CommandLineOptions());
try {
commandLine.setExecutionExceptionHandler(CommandLineApplication::logExecutionException);
commandLine.execute(args);
if (commandLine.isUsageHelpRequested()) {
resultStatus = ReturnValue.HELP_REQUEST;
} else {
resultStatus = ObjectUtils.defaultIfNull(commandLine.getExecutionResult(), ReturnValue.PARSING_ERROR);
if (resultStatus.isError()) {
commandLine.usage(System.out);
}
}
} catch (final Exception e) {
writeErr("Error processing command line arguments: {0}", e.getMessage(), e);
resultStatus = ReturnValue.PARSING_ERROR;
}
return resultStatus;
}
private static int logExecutionException(final Exception ex, final CommandLine cli, final ParseResult parseResult) {
final String message = isNotEmpty(ex.getMessage()) ? ex.getMessage() : "Es ist eine Fehler aufgetreten";
Printer.writeErr(ex, message);
return 1;
}
enum Level {
INFO, WARN, DEBUG, TRACE, ERROR, OFF;
}
}