1 files changed, 36 insertions, 0 deletions
diff --git a/src/support/StreamingGZIPInputStream.java b/src/support/StreamingGZIPInputStream.java
new file mode 100644
index 0000000..036df5f
--- /dev/null
+++ b/src/support/StreamingGZIPInputStream.java
@@ -0,0 +1,36 @@
+package support;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.GZIPInputStream;
+
+/**
+ * Implementation that immediately returns uncompressed data available from an
+ * input stream. Adapted from
+ * https://dev.twitter.com/docs/streaming-apis/processing.
+ */
+public class StreamingGZIPInputStream extends GZIPInputStream {
+
+    private final InputStream wrapped;
+
+    public StreamingGZIPInputStream(InputStream is) throws IOException {
+        super(is);
+        wrapped = is;
+    }
+
+    /**
+     * Overrides behavior of GZIPInputStream which assumes we have all the data
+     * available which is not true for streaming. We instead rely on the
+     * underlying stream to tell us how much data is available.
+     *
+     * Programs should not count on this method to return the actual number of
+     * bytes that could be read without blocking.
+     *
+     * @return whatever the wrapped InputStream returns.
+     * @exception IOException if an I/O error occurs.
+     */
+    @Override
+    public int available() throws IOException {
+        return wrapped.available();
+    }
+}