1 files changed, 75 insertions, 0 deletions
diff --git a/src/proguard/io/JarReader.java b/src/proguard/io/JarReader.java
new file mode 100644
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+++ b/src/proguard/io/JarReader.java
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+/*
+ * ProGuard -- shrinking, optimization, obfuscation, and preverification
+ *             of Java bytecode.
+ *
+ * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package proguard.io;
+
+import java.io.IOException;
+import java.util.zip.*;
+
+/**
+ * This DataEntryReader lets a given DataEntryReader read all data entries of
+ * the read jar/war/zip data entries.
+ *
+ * @author Eric Lafortune
+ */
+public class JarReader implements DataEntryReader
+{
+    private final DataEntryReader dataEntryReader;
+
+
+    /**
+     * Creates a new JarReader.
+     */
+    public JarReader(DataEntryReader dataEntryReader)
+    {
+        this.dataEntryReader = dataEntryReader;
+    }
+
+
+    // Implementation for DataEntryReader.
+
+    public void read(DataEntry dataEntry) throws IOException
+    {
+        ZipInputStream zipInputStream = new ZipInputStream(dataEntry.getInputStream());
+
+        try
+        {
+            // Get all entries from the input jar.
+            while (true)
+            {
+                // Can we get another entry?
+                ZipEntry zipEntry = zipInputStream.getNextEntry();
+                if (zipEntry == null)
+                {
+                    break;
+                }
+
+                // Delegate the actual reading to the data entry reader.
+                dataEntryReader.read(new ZipDataEntry(dataEntry,
+                                                      zipEntry,
+                                                      zipInputStream));
+            }
+        }
+        finally
+        {
+            dataEntry.closeInputStream();
+        }
+    }
+}