updated Gradle and lys-catalog versions

src/main/java/net/woggioni/jwo/Hash.java

@@ -90,7 +90,36 @@ public class Hash {
         return new String(hexChars);
     }
 
+    private static int charToInt(char c) {
+        if (c >= '0' && c <= '9') {
+            return c - '0';
+        } else if(c >= 'a' && c <= 'f') {
+            return 10 + c - 'a';
+        } else if(c >= 'A' && c <= 'F') {
+            return 10 + c - 'A';
+        } else {
+            throw newThrowable(IllegalArgumentException.class, "Illegal hex character '%c'", c);
+        }
+    }
+
     public static byte[] hexToBytes(String hexString) {
+        if (hexString.length() % 2 != 0) {
+            throw newThrowable(IllegalArgumentException.class, "Hex string length must be even," +
+                    " string has length '%d' instead", hexString.length());
+        }
+        byte[] result = new byte[hexString.length() / 2];
+        for(int i = 0; i < hexString.length(); i++) {
+            int value = charToInt(hexString.charAt(i));
+            if (i % 2 == 0) {
+                result[i / 2] += (byte) (value << 4);
+            } else {
+                result[i / 2] += (byte) value;
+            }
+        }
+        return result;
+    }
+
+    public static byte[] hexToBytes2(String hexString) {
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         if (hexString.length() % 2 != 0) {
             throw newThrowable(IllegalArgumentException.class, "Hex string length must be even," +

src/main/java/net/woggioni/jwo/JWO.java

@@ -237,6 +237,10 @@ public class JWO {
         return Hash.bytesToHex(bytes);
     }
 
+    public static byte[] hexToBytes(String hexStr) {
+        return Hash.hexToBytes(hexStr);
+    }
+
     @SneakyThrows
     public static void deletePath(Path path) {
         Files.walk(path)

src/test/java/net/woggioni/jwo/HashTest.java

@@ -65,6 +65,7 @@ public class HashTest {
             );
         }
     }
+
     @ArgumentsSource(HexTestArguments.class)
     @ParameterizedTest
     public void hexTest(String sourceString, Class<? extends Throwable> t) {
@@ -78,4 +79,18 @@ public class HashTest {
             Assertions.assertEquals(sourceString.toUpperCase(), Hash.bytesToHex(bytes));
         }
     }
+
+    @ArgumentsSource(HexTestArguments.class)
+    @ParameterizedTest
+    public void hexTest2(String sourceString, Class<? extends Throwable> t) {
+        if(t != null) {
+            Assertions.assertThrows(t, () ->
+                    Hash.hexToBytes2(sourceString)
+            );
+        } else {
+            byte[] bytes = Hash.hexToBytes2(sourceString);
+            Assertions.assertEquals(sourceString.length() / 2, bytes.length);
+            Assertions.assertEquals(sourceString.toUpperCase(), Hash.bytesToHex(bytes));
+        }
+    }
 }

src/test/java/net/woggioni/jwo/JavaVersionTest.java

@@ -82,7 +82,7 @@ public class JavaVersionTest {
                 JWO.copy(is, baos);
             }
             final var jwoClassVersion = JavaVersion.forClass(baos.toByteArray());
-            assertEquals(JavaVersion.VERSION_1_8, jwoClassVersion);
+            assertEquals(JavaVersion.VERSION_11, jwoClassVersion);
         }
     }
 }