3 files changed, 11 insertions, 0 deletions
diff --git a/src/main/java/org/zwobble/mammoth/internal/archives/Archive.java b/src/main/java/org/zwobble/mammoth/internal/archives/Archive.java
index 4440234..2f5a4ae 100644
--- a/src/main/java/org/zwobble/mammoth/internal/archives/Archive.java
+++ b/src/main/java/org/zwobble/mammoth/internal/archives/Archive.java
@@ -7,4 +7,5 @@ import java.util.Optional;
 
 public interface Archive extends Closeable {
     Optional<InputStream> tryGetInputStream(String name) throws IOException;
+    boolean exists(String name);
 }
diff --git a/src/main/java/org/zwobble/mammoth/internal/archives/InMemoryArchive.java b/src/main/java/org/zwobble/mammoth/internal/archives/InMemoryArchive.java
index 9ad7134..0844e8d 100644
--- a/src/main/java/org/zwobble/mammoth/internal/archives/InMemoryArchive.java
+++ b/src/main/java/org/zwobble/mammoth/internal/archives/InMemoryArchive.java
@@ -46,6 +46,11 @@ public class InMemoryArchive implements MutableArchive {
     }
 
     @Override
+    public boolean exists(String name) {
+        return entries.containsKey(name);
+    }
+
+    @Override
     public void writeEntry(String path, String content) {
         entries.put(path, content.getBytes(StandardCharsets.UTF_8));
     }
diff --git a/src/main/java/org/zwobble/mammoth/internal/archives/ZippedArchive.java b/src/main/java/org/zwobble/mammoth/internal/archives/ZippedArchive.java
index 853ced9..47be074 100644
--- a/src/main/java/org/zwobble/mammoth/internal/archives/ZippedArchive.java
+++ b/src/main/java/org/zwobble/mammoth/internal/archives/ZippedArchive.java
@@ -29,6 +29,11 @@ public class ZippedArchive implements Archive {
     }
 
     @Override
+    public boolean exists(String name) {
+        return zipFile.getEntry(name) != null;
+    }
+
+    @Override
     public void close() throws IOException {
         zipFile.close();
     }