1 files changed, 97 insertions, 0 deletions
diff --git a/Source/WebCore/websockets/WebSocketDeflater.h b/Source/WebCore/websockets/WebSocketDeflater.h
new file mode 100644
index 000000000..9c630dcfb
--- /dev/null
+++ b/Source/WebCore/websockets/WebSocketDeflater.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2012 Google Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WebSocketDeflater_h
+#define WebSocketDeflater_h
+
+#if ENABLE(WEB_SOCKETS)
+
+#include <wtf/Noncopyable.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/PassOwnPtr.h>
+#include <wtf/Vector.h>
+
+struct z_stream_s;
+typedef z_stream_s z_stream;
+
+namespace WebCore {
+
+class WebSocketDeflater {
+public:
+    enum ContextTakeOverMode {
+        DoNotTakeOverContext,
+        TakeOverContext
+    };
+    static PassOwnPtr<WebSocketDeflater> create(int windowBits, ContextTakeOverMode = TakeOverContext);
+
+    ~WebSocketDeflater();
+
+    bool initialize();
+    bool addBytes(const char*, size_t);
+    bool finish();
+    const char* data() { return m_buffer.data(); }
+    size_t size() const { return m_buffer.size(); }
+    void reset();
+
+private:
+    WebSocketDeflater(int windowBits, ContextTakeOverMode);
+
+    int m_windowBits;
+    ContextTakeOverMode m_contextTakeOverMode;
+    Vector<char> m_buffer;
+    OwnPtr<z_stream> m_stream;
+};
+
+class WebSocketInflater {
+public:
+    static PassOwnPtr<WebSocketInflater> create(int windowBits = 15);
+
+    ~WebSocketInflater();
+
+    bool initialize();
+    bool addBytes(const char*, size_t);
+    bool finish();
+    const char* data() { return m_buffer.data(); }
+    size_t size() const { return m_buffer.size(); }
+    void reset();
+
+private:
+    explicit WebSocketInflater(int windowBits);
+
+    int m_windowBits;
+    Vector<char> m_buffer;
+    OwnPtr<z_stream> m_stream;
+};
+
+}
+
+#endif // ENABLE(WEB_SOCKETS)
+
+#endif // WebSocketDeflater_h