package: Add ZipOutputEntry to isolate deflating of streams.

Preparation commit for deflating streams in parallel.
We still use the same single XOutputStream (ByteChucker :-) for
sequential writing but this can now be changed more easily.

Change-Id: Idf26cc2187461660e31ac2e12c4708e761596fb2

1 files changed, 79 insertions, 0 deletions

diff --git a/package/inc/ZipOutputEntry.hxx b/package/inc/ZipOutputEntry.hxx
new file mode 100644
index 000000000000..a1d03d3ebc40
--- /dev/null
+++ b/package/inc/ZipOutputEntry.hxx
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_PACKAGE_INC_ZIPOUTPUTENTRY_HXX
+#define INCLUDED_PACKAGE_INC_ZIPOUTPUTENTRY_HXX
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/xml/crypto/XCipherContext.hpp>
+#include <com/sun/star/xml/crypto/XDigestContext.hpp>
+
+#include <package/Deflater.hxx>
+#include <ByteChucker.hxx>
+#include <CRC32.hxx>
+
+struct ZipEntry;
+class ZipPackageStream;
+
+class ZipOutputEntry
+{
+    ::com::sun::star::uno::Sequence< sal_Int8 > m_aDeflateBuffer;
+    ZipUtils::Deflater  m_aDeflater;
+
+    ::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XCipherContext > m_xCipherContext;
+    ::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XDigestContext > m_xDigestContext;
+
+    CRC32               m_aCRC;
+    ByteChucker         &m_rChucker;
+    ZipEntry            *m_pCurrentEntry;
+    sal_Int16           m_nDigested;
+    bool                m_bEncryptCurrentEntry;
+    ZipPackageStream*   m_pCurrentStream;
+
+public:
+    ZipOutputEntry(
+        const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext >& rxContext,
+        ByteChucker& rChucker, ZipEntry& rEntry, ZipPackageStream* pStream, bool bEncrypt = false);
+
+    ~ZipOutputEntry();
+
+    // rawWrite to support a direct write to the output stream
+    void SAL_CALL rawWrite( ::com::sun::star::uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength )
+        throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+    void SAL_CALL rawCloseEntry(  )
+        throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+
+    // XZipOutputEntry interfaces
+    void SAL_CALL closeEntry(  )
+        throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+    void SAL_CALL write( const ::com::sun::star::uno::Sequence< sal_Int8 >& rBuffer, sal_Int32 nNewOffset, sal_Int32 nNewLength )
+        throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+    static sal_uInt32 getCurrentDosTime ( );
+
+private:
+    void doDeflate();
+    sal_Int32 writeLOC( const ZipEntry &rEntry )
+        throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+    void writeEXT( const ZipEntry &rEntry )
+        throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */