2 files changed, 26 insertions, 6 deletions
diff --git a/src/main/java/eu/mulk/aendggner/AendGgner.java b/src/main/java/eu/mulk/aendggner/AendGgner.java
index 618f36f..e510efb 100644
--- a/src/main/java/eu/mulk/aendggner/AendGgner.java
+++ b/src/main/java/eu/mulk/aendggner/AendGgner.java
@@ -1,7 +1,13 @@
 package eu.mulk.aendggner;
 
-import java.io.File;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.List;
 import java.util.concurrent.Callable;
+import org.apache.tika.config.TikaConfig;
+import org.apache.tika.exception.TikaException;
+import org.apache.tika.io.TikaInputStream;
+import org.apache.tika.metadata.Metadata;
 import picocli.CommandLine;
 import picocli.CommandLine.Command;
 import picocli.CommandLine.Parameters;
@@ -14,10 +20,10 @@ import picocli.CommandLine.Parameters;
 public class AendGgner implements Callable<Integer> {
 
   @Parameters(index = "0", description = "The base text to modify.")
-  private File baseFile;
+  private Path baseFile;
 
-  @Parameters(index = "1", description = "The diff relative to the base text.")
-  private File diffFile;
+  @Parameters(arity = "*", description = "The diff relative to the base text.")
+  private List<Path> patches;
 
   public static void main(String... args) {
     int exitCode = new CommandLine(new AendGgner()).execute(args);
@@ -25,8 +31,19 @@ public class AendGgner implements Callable<Integer> {
   }
 
   @Override
-  public final Integer call() {
-    System.out.println("Hi.");
+  public final Integer call() throws TikaException, IOException {
+    var tika = new TikaConfig();
+
+    for (var file : patches) {
+      var metadata = new Metadata();
+      metadata.set(Metadata.RESOURCE_NAME_KEY, file.toString());
+      try (var is = TikaInputStream.get(file)) {
+        var mimetype = tika.getDetector().detect(
+            TikaInputStream.get(file), metadata);
+        System.out.printf("File %s is %s.\n", file, mimetype);
+      }
+    }
+
     return 0;
   }
 }
diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
index e7d9c77..dbe7d62 100644
--- a/src/main/java/module-info.java
+++ b/src/main/java/module-info.java
@@ -1,3 +1,6 @@
 module aendggner {
   requires info.picocli;
+  requires org.apache.tika.core;
+  requires java.sql;
+  opens eu.mulk.aendggner;
 }