113 lines
3.3 KiB
Java
113 lines
3.3 KiB
Java
/*
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* WorldGuard, a suite of tools for Minecraft
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* Copyright (C) sk89q <http://www.sk89q.com>
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* Copyright (C) WorldGuard team and contributors
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.sk89q.worldguard.commands;
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import com.sk89q.worldedit.extension.platform.Actor;
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import com.sk89q.worldguard.LocalPlayer;
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import com.sk89q.worldguard.protection.flags.InvalidFlagFormat;
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import javax.annotation.Nullable;
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import java.util.Map;
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public abstract class CommandInputContext<T extends Exception> {
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protected final Actor sender;
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protected final String input;
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protected Map<String, Object> context;
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protected CommandInputContext(Actor sender, String input, Map<String, Object> values) {
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this.sender = sender;
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this.input = input;
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this.context = values;
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}
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public void put(String name, Object value) {
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context.put(name, value);
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}
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public Actor getSender() {
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return sender;
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}
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public String getUserInput() {
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return input;
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}
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/**
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* Gets the CommandSender as a player.
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*
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* @return Player
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* @throws T if the sender is not a player
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*/
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public LocalPlayer getPlayerSender() throws T {
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if (sender.isPlayer() && sender instanceof LocalPlayer) {
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return (LocalPlayer) sender;
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} else {
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throw createException("Not a player");
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}
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}
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public Integer getUserInputAsInt() throws T {
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try {
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return Integer.parseInt(input);
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} catch (NumberFormatException e) {
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throw createException("Not a number: " + input);
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}
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}
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public Double getUserInputAsDouble() throws T {
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try {
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return Double.parseDouble(input);
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} catch (NumberFormatException e) {
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throw createException("Not a number: " + input);
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}
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}
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protected abstract T createException(String str);
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/**
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* Get an object from the context by key name.
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* May return null if the object does not exist in the context.
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*
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* @param name key name of the object
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* @return the object matching the key, or null
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*/
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@Nullable
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public Object get(String name) {
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return get(name, null);
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}
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/**
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* Get an object from the context by key name.
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* Will only return null if
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* a) you provide null as the default
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* b) the key has explicity been set to null
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*
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* @param name key name of the object
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* @return the object matching the key
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*/
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@Nullable
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public Object get(String name, Object defaultValue) {
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Object obj;
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return (((obj = context.get(name)) != null) || context.containsKey(name)
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? obj : defaultValue);
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}
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}
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