Added BeatTime

README.md

@@ -8,7 +8,8 @@ This project provides a collection of template renderers.
 ## Date/Time Renderers
 
 | Renderer                         | Description                                                      |
-|:---------------------------------|:----------------------------------------------------------|
+|:---------------------------------|:-----------------------------------------------------------------|
+| `rife.render.BeatTime`           | Renders the current time in Swatch Internet (.beat) Time format. |
 | `rife.render.DateIso`            | Renders the current date in ISO 8061 format.                     |
 | `rife.render.DateTimeIso`        | Renders the current date and time in ISO 8061 format.            |
 | `rife.render.DateTimeRfc2822`    | Renders the current date and time in RFC 2822 format.            |

lib/src/main/java/rife/render/BeatTime.java

@@ -0,0 +1,61 @@
+/*
+ *  Copyright 2023 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the License at
+ *
+ *       https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+
+package rife.render;
+
+import rife.template.Template;
+import rife.template.ValueRenderer;
+
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.temporal.ChronoField;
+
+/**
+ * <p>Renders the current time in Swatch Internet (.beat) Time format.</p>
+ *
+ * <p>Usage:</p>
+ *
+ * <pre>
+ *   &lt;!--v render:rife.render.BeatTime/--&gt;
+ *   {{v render:rife.render.BeatTime/}}
+ * </pre>
+ *
+ * @author <a href="https://erik.thauvin.net/">Erik C. Thauvin</a>
+ * @since 1.0
+ */
+public class BeatTime implements ValueRenderer {
+    /**
+     * Returns the Swatch Internet (.beat) Time for the give date & time.
+     *
+     * @param zonedDateTime the date and time.
+     * @return the .beat time. (eg.: {@code @248})
+     */
+    public static String beatTime(ZonedDateTime zonedDateTime) {
+        var zdt = zonedDateTime.withZoneSameInstant(ZoneId.of("UTC+01:00"));
+        var beats = (int) ((zdt.get(ChronoField.SECOND_OF_MINUTE) + (zdt.get(ChronoField.MINUTE_OF_HOUR) * 60)
+                + (zdt.get(ChronoField.HOUR_OF_DAY) * 3600)) / 86.4);
+        return String.format("@%03d", beats);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public String render(Template template, String valueId, String differentiator) {
+        return beatTime(ZonedDateTime.now());
+    }
+}

lib/src/test/java/rife/render/TestDateTime.java

@@ -24,6 +24,12 @@ import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatCode;
 
 class TestDateTime {
+    @Test
+    void testBestTime() {
+        var t = TemplateFactory.HTML.get("beatTime");
+        assertThat(t.getContent()).matches("@\\d{3}");
+    }
+
     @Test
     void testDateIso() {
         var t = TemplateFactory.HTML.get("dateIso");

lib/src/test/resources/templates/beatTime.html

@@ -0,0 +1 @@
+<!--v render:rife.render.BeatTime/-->