1 files changed, 53 insertions, 0 deletions
diff --git a/src/main/java/com/juick/util/PrettyTimeFormatter.java b/src/main/java/com/juick/util/PrettyTimeFormatter.java
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+++ b/src/main/java/com/juick/util/PrettyTimeFormatter.java
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+/*
+ * Copyright (C) 2008-2017, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.juick.util;
+
+import org.ocpsoft.prettytime.PrettyTime;
+
+import java.util.Date;
+import java.util.LinkedHashMap;
+import java.util.Locale;
+import java.util.Map;
+
+/**
+ * Created by vitalyster on 04.05.2017.
+ */
+public class PrettyTimeFormatter {
+    private static final int MAX_CACHE_SIZE = 20;
+
+    // Cache PrettyTime per locale. LRU cache to prevent memory leak.
+    private static final Map<Locale, PrettyTime> PRETTY_TIME_LOCALE_MAP =
+            new LinkedHashMap<Locale, PrettyTime>(MAX_CACHE_SIZE + 1, 1.1F, true)
+    {
+        @Override
+        protected boolean removeEldestEntry(Map.Entry<Locale, PrettyTime> eldest)
+        {
+            return size() > MAX_CACHE_SIZE;
+        }
+    };
+
+    public String format(final Locale locale, final Date value)
+    {
+        PrettyTime prettyTime;
+
+        synchronized (PRETTY_TIME_LOCALE_MAP) {
+            prettyTime = PRETTY_TIME_LOCALE_MAP.computeIfAbsent(locale, PrettyTime::new);
+        }
+        return prettyTime.format(value);
+    }
+}