Override ZipOutputStream.write(int)

CONTRIBUTORS

@@ -166,6 +166,7 @@ Grégoire Vatry
 Günther Kögel
 Harish Prabandham
 Haroon Rafique
+Helder Pereira
 Hiroaki Nakamura
 Holger Engels
 Holger Joest

contributors.xml

@@ -696,6 +696,10 @@
     <first>Haroon</first>
     <last>Rafique</last>
   </name>
+  <name>
+    <first>Helder</first>
+    <last>Pereira</last>
+  </name>
   <name>
     <first>Hiroaki</first>
     <last>Nakamura</last>

src/main/org/apache/tools/zip/ZipOutputStream.java

@@ -325,6 +325,11 @@ public class ZipOutputStream extends FilterOutputStream {
 
     private final Calendar calendarInstance = Calendar.getInstance();
 
+    /**
+     * Temporary buffer used for the {@link #write(int)} method.
+     */
+    private final byte[] oneByte = new byte[1];
+
     /**
      * Creates a new ZIP OutputStream filtering the underlying stream.
      * @param out the outputstream to zip
@@ -901,6 +906,19 @@ public class ZipOutputStream extends FilterOutputStream {
         return ZipUtil.canHandleEntryData(ae);
     }
 
+    /**
+     * Writes a byte to ZIP entry.
+     *
+     * @param b the byte to write
+     * @throws IOException on error
+     * @since Ant 1.10.10
+     */
+    @Override
+    public void write(int b) throws IOException {
+        oneByte[0] = (byte) (b & 0xff);
+        write(oneByte, 0, 1);
+    }
+
     /**
      * Writes bytes to ZIP entry.
      *

src/tests/junit/org/apache/tools/zip/ZipOutputStreamTest.java

@@ -21,8 +21,14 @@ package org.apache.tools.zip;
 import org.junit.Before;
 import org.junit.Test;
 
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
 import java.util.Calendar;
 import java.util.Date;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
+import java.util.zip.ZipInputStream;
 
 import static org.junit.Assert.assertEquals;
 
@@ -70,4 +76,18 @@ public class ZipOutputStreamTest {
                      ZipUtil.adjustToLong(2 * Integer.MAX_VALUE));
     }
 
+    @Test
+    public void testWriteAndReadManifest() throws IOException {
+        try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
+            try (ZipOutputStream zos = new ZipOutputStream(baos)) {
+                zos.putNextEntry(new ZipEntry(JarFile.MANIFEST_NAME));
+                new Manifest().write(zos);
+            }
+            try (ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
+                 ZipInputStream zis = new ZipInputStream(bais)) {
+                zis.getNextEntry();
+                zis.closeEntry();
+            }
+        }
+    }
 }