1 files changed, 171 insertions, 0 deletions
diff --git a/ucb/source/ucp/ext/ucpext_provider.cxx b/ucb/source/ucp/ext/ucpext_provider.cxx
new file mode 100644
index 000000000..765ea7856
--- /dev/null
+++ b/ucb/source/ucp/ext/ucpext_provider.cxx
@@ -0,0 +1,171 @@
+/* -*- 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 .
+ */
+
+#include "ucpext_provider.hxx"
+#include "ucpext_content.hxx"
+
+#include <com/sun/star/ucb/IllegalIdentifierException.hpp>
+#include <cppuhelper/weak.hxx>
+#include <ucbhelper/contentidentifier.hxx>
+#include <osl/mutex.hxx>
+#include <rtl/ustrbuf.hxx>
+
+
+namespace ucb::ucp::ext
+{
+
+
+    using ::com::sun::star::uno::Reference;
+    using ::com::sun::star::uno::XInterface;
+    using ::com::sun::star::uno::Sequence;
+    using ::com::sun::star::ucb::XContentIdentifier;
+    using ::com::sun::star::ucb::IllegalIdentifierException;
+    using ::com::sun::star::ucb::XContent;
+    using ::com::sun::star::uno::XComponentContext;
+
+
+    //= ContentProvider
+
+
+    ContentProvider::ContentProvider( const Reference< XComponentContext >& rxContext )
+        :ContentProvider_Base( rxContext )
+    {
+    }
+
+
+    ContentProvider::~ContentProvider()
+    {
+    }
+
+
+    OUString SAL_CALL ContentProvider::getImplementationName()
+    {
+        return "org.openoffice.comp.ucp.ext.ContentProvider";
+    }
+
+
+    Sequence< OUString > SAL_CALL ContentProvider::getSupportedServiceNames(  )
+    {
+        return { "com.sun.star.ucb.ContentProvider", "com.sun.star.ucb.ExtensionContentProvider" };
+    }
+
+
+    OUString ContentProvider::getRootURL()
+    {
+        return "vnd.sun.star.extension://";
+    }
+
+
+    OUString ContentProvider::getArtificialNodeContentType()
+    {
+        return "application/vnd.sun.star.extension-content";
+    }
+
+
+    namespace
+    {
+        void lcl_ensureAndTransfer( std::u16string_view& io_rIdentifierFragment, OUStringBuffer& o_rNormalization, const sal_Unicode i_nLeadingChar )
+        {
+            if ( ( io_rIdentifierFragment.empty() ) || ( io_rIdentifierFragment[0] != i_nLeadingChar ) )
+                throw IllegalIdentifierException();
+            io_rIdentifierFragment = io_rIdentifierFragment.substr( 1 );
+            o_rNormalization.append( i_nLeadingChar );
+        }
+    }
+
+
+    Reference< XContent > SAL_CALL ContentProvider::queryContent( const Reference< XContentIdentifier  >& i_rIdentifier )
+    {
+        // Check URL scheme...
+        static const OUStringLiteral sScheme( u"vnd.sun.star.extension" );
+        if ( !i_rIdentifier->getContentProviderScheme().equalsIgnoreAsciiCase( sScheme ) )
+            throw IllegalIdentifierException();
+
+        // normalize the identifier
+        const OUString sIdentifier( i_rIdentifier->getContentIdentifier() );
+
+        // the scheme needs to be lower-case
+        OUStringBuffer aComposer;
+        aComposer.append( sIdentifier.copy( 0, sScheme.getLength() ).toAsciiLowerCase() );
+
+        // one : is required after the scheme
+        std::u16string_view sRemaining( sIdentifier.subView( sScheme.getLength() ) );
+        lcl_ensureAndTransfer( sRemaining, aComposer, ':' );
+
+        // and at least one /
+        lcl_ensureAndTransfer( sRemaining, aComposer, '/' );
+
+        // the normalized form requires one additional /, but we also accept identifiers which don't have it
+        if ( sRemaining.empty() )
+        {
+            // the root content is a special case, it requires /
+            aComposer.append( "//" );
+        }
+        else
+        {
+            if ( sRemaining[0] != '/' )
+            {
+                aComposer.append( '/' );
+                aComposer.append( sRemaining );
+            }
+            else
+            {
+                lcl_ensureAndTransfer( sRemaining, aComposer, '/' );
+                // by now, we moved "vnd.sun.star.extension://" from the URL to aComposer
+                if ( sRemaining.empty() )
+                {
+                    // again, it's the root content, but one / is missing
+                    aComposer.append( '/' );
+                }
+                else
+                {
+                    aComposer.append( sRemaining );
+                }
+            }
+        }
+        const Reference< XContentIdentifier > xNormalizedIdentifier( new ::ucbhelper::ContentIdentifier( aComposer.makeStringAndClear() ) );
+
+        ::osl::MutexGuard aGuard( m_aMutex );
+
+        // check if a content with given id already exists...
+        Reference< XContent > xContent( queryExistingContent( xNormalizedIdentifier ) );
+        if ( xContent.is() )
+            return xContent;
+
+        // create a new content
+        xContent = new Content( m_xContext, this, xNormalizedIdentifier );
+        if ( !xContent->getIdentifier().is() )
+            throw IllegalIdentifierException();
+
+        registerNewContent( xContent );
+        return xContent;
+    }
+
+
+}   // namespace ucb::ucp::ext
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+ucb_ext_ContentProvider_get_implementation(
+    css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new ucb::ucp::ext::ContentProvider(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */