Data commit

Task/UTF-8-encode-and-decode/Groovy/utf-8-encode-and-decode.groovy

@@ -0,0 +1,27 @@
+import java.nio.charset.StandardCharsets
+
+class UTF8EncodeDecode {
+    static byte[] utf8encode(int codePoint) {
+        char[] characters = [codePoint]
+        new String(characters, 0, 1).getBytes StandardCharsets.UTF_8
+    }
+
+    static int utf8decode(byte[] bytes) {
+        new String(bytes, StandardCharsets.UTF_8).codePointAt(0)
+    }
+
+    static void main(String[] args) {
+        printf "%-7s %-43s %7s\t%s\t%7s%n", "Char", "Name", "Unicode", "UTF-8 encoded", "Decoded"
+
+        ([0x0041, 0x00F6, 0x0416, 0x20AC, 0x1D11E]).each { int codePoint ->
+            byte[] encoded = utf8encode codePoint
+            Formatter formatter = new Formatter()
+            encoded.each { byte b ->
+                formatter.format "%02X ", b
+            }
+            String encodedHex = formatter.toString()
+            int decoded = utf8decode encoded
+            printf "%-7c %-43s U+%04X\t%-12s\tU+%04X%n", codePoint, Character.getName(codePoint), codePoint, encodedHex, decoded
+        }
+    }
+}