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// SPDX-License-Identifier: GPL-3.0-only
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/*
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* Prism Launcher
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*
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* Copyright (C) 2022 icelimetea <fr3shtea@outlook.com>
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* Copyright (C) 2022 TheKodeToad <TheKodeToad@proton.me>
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* Copyright (C) 2022 solonovamax <solonovamax@12oclockpoint.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Linking this library statically or dynamically with other modules is
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* making a combined work based on this library. Thus, the terms and
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* conditions of the GNU General Public License cover the whole
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* combination.
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*
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* As a special exception, the copyright holders of this library give
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* you permission to link this library with independent modules to
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* produce an executable, regardless of the license terms of these
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* independent modules, and to copy and distribute the resulting
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* executable under terms of your choice, provided that you also meet,
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* for each linked independent module, the terms and conditions of the
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* license of that module. An independent module is a module which is
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* not derived from or based on this library. If you modify this
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* library, you may extend this exception to your version of the
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* library, but you are not obliged to do so. If you do not wish to do
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* so, delete this exception statement from your version.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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*
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* Copyright 2013-2021 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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2014-01-09 05:52:34 +05:30
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*/
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2022-10-18 20:07:04 +05:30
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package org.prismlauncher;
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import org.prismlauncher.exception.ParseException;
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import org.prismlauncher.launcher.Launcher;
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import org.prismlauncher.launcher.impl.StandardLauncher;
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import org.prismlauncher.launcher.impl.legacy.LegacyLauncher;
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import org.prismlauncher.utils.Parameters;
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import org.prismlauncher.utils.StringUtils;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.nio.charset.StandardCharsets;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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public final class EntryPoint {
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private static final Logger LOGGER = Logger.getLogger("EntryPoint");
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private EntryPoint() {
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}
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public static void main(String[] args) {
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ExitCode exitCode = listen();
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if (exitCode != ExitCode.NORMAL) {
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LOGGER.warning("Exiting with " + exitCode);
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System.exit(exitCode.numericalCode);
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}
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}
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private static PreLaunchAction parseLine(String input, Parameters params) throws ParseException {
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if (input.isEmpty())
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return PreLaunchAction.PROCEED;
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if ("launch".equalsIgnoreCase(input))
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return PreLaunchAction.LAUNCH;
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else if ("abort".equalsIgnoreCase(input))
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return PreLaunchAction.ABORT;
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else {
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String[] pair = StringUtils.splitStringPair(' ', input);
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if (pair == null)
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throw new ParseException(String.format(
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"Could not split input string '%s' by space. All input provided from stdin must be either 'launch', 'abort', or "
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+ "in the format '[param name] [param]'.",
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input));
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params.add(pair[0], pair[1]);
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return PreLaunchAction.PROCEED;
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}
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}
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private static ExitCode listen() {
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Parameters parameters = new Parameters();
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PreLaunchAction preLaunchAction = PreLaunchAction.PROCEED;
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try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in, StandardCharsets.UTF_8))) {
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String line;
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while (preLaunchAction == PreLaunchAction.PROCEED) {
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if ((line = reader.readLine()) != null)
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preLaunchAction = parseLine(line, parameters);
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else
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preLaunchAction = PreLaunchAction.ABORT;
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}
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} catch (IOException | ParseException e) {
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LOGGER.log(Level.SEVERE, "Launcher abort due to exception", e);
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return ExitCode.ILLEGAL_ARGUMENT;
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}
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// Main loop
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if (preLaunchAction == PreLaunchAction.ABORT) {
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LOGGER.info("Launch aborted by the launcher");
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return ExitCode.ABORT;
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}
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try {
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Launcher launcher;
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String type = parameters.getString("launcher");
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switch (type) {
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case "standard":
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launcher = new StandardLauncher(parameters);
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break;
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case "legacy":
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launcher = new LegacyLauncher(parameters);
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break;
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default:
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throw new IllegalArgumentException("Invalid launcher type: " + type);
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}
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launcher.launch();
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return ExitCode.NORMAL;
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} catch (IllegalArgumentException e) {
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LOGGER.log(Level.SEVERE, "Wrong argument", e);
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return ExitCode.ILLEGAL_ARGUMENT;
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} catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException e) {
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LOGGER.log(Level.SEVERE, "Caught reflection exception from launcher", e);
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return ExitCode.REFLECTION_EXCEPTION;
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} catch (Throwable e) {
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LOGGER.log(Level.SEVERE, "Exception caught from launcher", e);
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return ExitCode.ERROR;
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}
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}
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private enum PreLaunchAction {
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PROCEED, LAUNCH, ABORT
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}
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private enum ExitCode {
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NORMAL(0), ABORT(1), ERROR(2), ILLEGAL_ARGUMENT(3), REFLECTION_EXCEPTION(4);
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private final int numericalCode;
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ExitCode(int numericalCode) {
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this.numericalCode = numericalCode;
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}
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}
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}
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