1 files changed, 48 insertions, 0 deletions
diff --git a/include/package/InflateZstd.hxx b/include/package/InflateZstd.hxx
new file mode 100644
index 000000000000..36cb0b15405c
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+++ b/include/package/InflateZstd.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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/.
+ */
+
+#pragma once
+
+#include <memory>
+#include <package/Inflater.hxx>
+#include <zstd.h>
+#include <zstd_errors.h>
+
+namespace ZipUtils
+{
+class DLLPUBLIC_PACKAGE InflateZstd : public Inflater
+{
+private:
+    bool bFinished;
+    bool bNeedDict;
+    sal_Int32 nLastInflateError;
+    css::uno::Sequence<sal_Int8> sInBuffer;
+    ZSTD_DCtx* pDCtx;
+    ZSTD_inBuffer inBuffer;
+    bool bStreamInitialized;
+
+    sal_Int32 doInflateBytes(css::uno::Sequence<sal_Int8>& rBuffer, sal_Int32 nNewOffset,
+                             sal_Int32 nNewLength);
+
+public:
+    explicit InflateZstd(bool bNoWrap = false);
+    virtual ~InflateZstd() override;
+
+    virtual void setInput(const css::uno::Sequence<sal_Int8>& rBuffer) override;
+    virtual bool needsDictionary() const override { return bNeedDict; }
+    virtual bool finished() const override { return bFinished; }
+    virtual sal_Int32 doInflateSegment(css::uno::Sequence<sal_Int8>& rBuffer, sal_Int32 nNewOffset,
+                                       sal_Int32 nNewLength) override;
+    virtual void end() override final;
+    virtual sal_Int32 getLastInflateError() const override { return nLastInflateError; }
+};
+
+} // namespace ZipUtils
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */