96 lines
4.2 KiB
Java
96 lines
4.2 KiB
Java
package de.jotoho.waituntil;
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/*
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waituntil - a tool for delaying command execution until the specified time
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Copyright (C) 2022 Jonas Tobias Hopusch
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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 Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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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 Affero General Public License for more details.
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You should have received a copy of the GNU Affero 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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import org.apache.commons.cli.DefaultParser;
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import org.apache.commons.cli.ParseException;
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import static de.jotoho.waituntil.GlobalConf.applicationOutputLanguage;
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// This file contains the main function and other utility function necessary for interpreting the terminal arguments.
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// See README.md and LICENSE.md for license information
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// Author: Jonas Tobias Hopusch (@jotoho)
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public final class Main {
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private static void printVersionInformation() {
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final var thisPackage = Main.class.getPackage();
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final var appVersion = thisPackage.getImplementationVersion() != null ? thisPackage.getImplementationVersion() : "version unknown";
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System.out.println("waituntil " + appVersion);
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System.out.println("""
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This program is free software: you can redistribute it and/or modify it under the terms of the
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GNU General Public License as published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.""");
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}
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private static void printHelpInformation() {
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switch (applicationOutputLanguage) {
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case GlobalConf.langGerman -> System.out.println("Hilfe kommt noch. (Nicht implementiert)");
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default -> System.out.println("Help is yet to come. (Not implemented)");
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}
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}
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public static void main(final String[] args) {
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try {
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final var parsedArguments =
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DefaultParser.builder()
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.setStripLeadingAndTrailingQuotes(true)
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.build()
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.parse(AppOptions.getOptions(), args);
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final var userData = parsedArguments.getArgs();
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if (parsedArguments.hasOption(AppOptions.help)) {
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printHelpInformation();
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} else if (parsedArguments.hasOption(AppOptions.version)) {
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printVersionInformation();
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} else if (userData.length == 0) {
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switch (applicationOutputLanguage) {
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case GlobalConf.langGerman -> System.err.println("FATAL: " +
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"Es wurde keine Uhrzeit angegeben.");
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default -> System.err.println("FATAL: No target time was " +
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"provided.");
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}
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System.exit(1);
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} else if (userData.length > 1) {
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switch (applicationOutputLanguage) {
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case GlobalConf.langGerman -> System.err.println("FATAL: " +
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"Zu viele Argumente wurden angegeben.");
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default -> System.err.println("FATAL: Too many arguments " +
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"provided.");
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}
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System.exit(1);
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} else {
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final var target =
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TimeCalculator.calculateAndAnnounceTargetTime(userData[0]);
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Sleep.waitUntilTimeStamp(target);
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}
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} catch (final ParseException e) {
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System.getLogger("main").log(System.Logger.Level.ERROR, "Parsing " +
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"of arguments failed and the program cannot continue.", e);
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System.exit(1);
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}
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}
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}
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