1 files changed, 140 insertions, 0 deletions
diff --git a/src/io/stream/xsltstream.h b/src/io/stream/xsltstream.h
new file mode 100644
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+++ b/src/io/stream/xsltstream.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_INKSCAPE_IO_XSLTSTREAM_H
+#define SEEN_INKSCAPE_IO_XSLTSTREAM_H
+/**
+ * @file
+ * Xslt-enabled input and output streams.
+ */
+/*
+ * Authors:
+ *   Bob Jamison <ishmalius@gmail.com>
+ *
+ * Copyright (C) 2004-2008 Inkscape.org
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+
+#include "inkscapestream.h"
+
+#include <libxslt/xslt.h>
+#include <libxslt/xsltInternals.h>
+
+
+namespace Inkscape
+{
+namespace IO
+{
+
+//#########################################################################
+//# X S L T    S T Y L E S H E E T
+//#########################################################################
+/**
+ * This is a container for reusing a loaded stylesheet
+ */
+class XsltStyleSheet
+{
+
+public:
+
+    /**
+     * Constructor with loading
+     */
+    XsltStyleSheet(InputStream &source);
+
+    /**
+     * Simple constructor, no loading
+     */
+    XsltStyleSheet();
+
+    /**
+     * Loader
+     */
+    bool read(InputStream &source);
+
+    /**
+     * Destructor
+     */
+    virtual ~XsltStyleSheet();
+    
+    xsltStylesheetPtr stylesheet;
+
+
+}; // class XsltStyleSheet
+
+
+//#########################################################################
+//# X S L T    I N P U T    S T R E A M
+//#########################################################################
+
+/**
+ * This class is for transforming stream input by a given stylesheet
+ */
+class XsltInputStream : public BasicInputStream
+{
+
+public:
+
+    XsltInputStream(InputStream &xmlSource, XsltStyleSheet &stylesheet);
+    
+    ~XsltInputStream() override;
+    
+    int available() override;
+    
+    void close() override;
+    
+    int get() override;
+    
+
+private:
+
+    XsltStyleSheet &stylesheet;
+
+    xmlChar *outbuf;
+    int outsize;
+    int outpos;
+
+}; // class XsltInputStream
+
+
+
+
+//#########################################################################
+//# X S L T    O U T P U T    S T R E A M
+//#########################################################################
+
+/**
+ * This class is for transforming stream output by a given stylesheet
+ */
+class XsltOutputStream : public BasicOutputStream
+{
+
+public:
+
+    XsltOutputStream(OutputStream &destination, XsltStyleSheet &stylesheet);
+    
+    ~XsltOutputStream() override;
+    
+    void close() override;
+    
+    void flush() override;
+    
+    int put(char ch) override;
+
+private:
+
+    XsltStyleSheet &stylesheet;
+
+    Glib::ustring outbuf;
+    
+    bool flushed;
+
+}; // class XsltOutputStream
+
+
+
+} // namespace IO
+} // namespace Inkscape
+
+
+#endif /* __INKSCAPE_IO_XSLTSTREAM_H__ */