Be gracious with "filtering" of binary files

src/main/java/org/apache/maven/shared/filtering/FilteringUtils.java

@@ -24,6 +24,7 @@
 import java.io.Reader;
 import java.io.Writer;
 import java.nio.charset.Charset;
+import java.nio.charset.MalformedInputException;
 import java.nio.file.FileSystemException;
 import java.nio.file.Files;
 import java.nio.file.NoSuchFileException;
@@ -317,6 +318,9 @@ public static void copyFile(Path from, Path to, String encoding, FilterWrapper[]
                         writer.write(buffer, 0, nRead);
                     }
                 }
+            } catch (MalformedInputException e) {
+                // Most likely a binary; just copy it then
+                copyFile(from, to, encoding, null, overwrite);
             }
         }
 

src/test/java/org/apache/maven/shared/filtering/FilteringUtilsTest.java

@@ -29,6 +29,8 @@
 import org.junit.jupiter.api.Test;
 
 import static org.apache.maven.api.di.testing.MavenDIExtension.getBasedir;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 /**
@@ -147,4 +149,24 @@ public void testEscapeWindowsPathNotAtBeginning() {
                 "jdbc:derby:C:\\\\Users\\\\Administrator/test;create=true",
                 FilteringUtils.escapeWindowsPath("jdbc:derby:C:\\Users\\Administrator/test;create=true"));
     }
+
+    @Test
+    public void testBinaryFileWithFiltering() throws IOException {
+        Path fromFile = Paths.get(getBasedir() + "/src/test/units-files/binary-file/binary-file");
+        Path toFile = TEST_DIRECTORY.resolve("binary-file-copied");
+        assertDoesNotThrow(() -> FilteringUtils.copyFile(
+                fromFile,
+                toFile,
+                "UTF-8",
+                new FilterWrapper[] {
+                    new FilterWrapper() {
+                        @Override
+                        public Reader getReader(Reader fileReader) {
+                            return fileReader;
+                        }
+                    }
+                },
+                false));
+        assertArrayEquals(Files.readAllBytes(toFile), Files.readAllBytes(fromFile), "Binary files differ");
+    }
 }