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- /*
- * Copyright (c) 2006-2015 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.ui.messages;
-
- import com.google.common.base.Strings;
-
- import java.lang.reflect.Method;
- import java.util.HashMap;
- import java.util.Map;
- import java.util.Optional;
- import java.util.function.Function;
-
- import javax.inject.Inject;
- import javax.inject.Singleton;
-
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
-
- import static com.dmdirc.util.LogUtils.USER_ERROR;
-
- /**
- * Provides properties and functions used by an {@link EventFormatter}.
- *
- * <p>Properties are dyanamically supplied based on get methods within the class. For example, if
- * channel objects have a 'getName()' method, then the name can be accessed as {{channel.name}}.
- *
- * <p>Functions are implemented as string transformations, and are defined in
- * {@link #EventPropertyManager()}.
- */
- @Singleton
- public class EventPropertyManager {
-
- private static final Logger LOG = LoggerFactory.getLogger(EventPropertyManager.class);
- private final Map<String, Function<String, String>> functions = new HashMap<>();
-
- @Inject
- public EventPropertyManager() {
- functions.put("uppercase", String::toUpperCase);
- functions.put("lowercase", String::toLowerCase);
- functions.put("trim", String::trim);
- functions.put("bracketed", s -> Strings.isNullOrEmpty(s) ? "" : " (" + s + ')');
- }
-
- public <S> Optional<Object> getProperty(final S object, final Class<? extends S> type,
- final String property) {
- final String methodName = "get" + property.substring(0, 1).toUpperCase()
- + property.substring(1);
- try {
- final Method method = type.getMethod(methodName);
- // TODO: This is needed for AutoValues, should probably get return types not real types
- method.setAccessible(true);
- final Object result = method.invoke(object);
-
- if (result instanceof Optional<?>) {
- return Optional.ofNullable(((Optional<?>) result).orElse(null));
- }
-
- return Optional.ofNullable(result);
- } catch (ReflectiveOperationException ex) {
- LOG.warn(USER_ERROR, "Unable to format event: could not retrieve property {}",
- ex.getMessage(), ex);
- }
- return Optional.empty();
- }
-
- public String applyFunction(final String input, final String function) {
- if (functions.containsKey(function)) {
- return functions.get(function).apply(input);
- }
- LOG.info(USER_ERROR, "unable to format event: no such function {}", function);
- return input;
- }
-
- }
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