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+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <string_view>
+
+#include <com/sun/star/logging/XLogFormatter.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/logging/LogRecord.hpp>
+
+#include <comphelper/namedvaluecollection.hxx>
+#include <cppuhelper/interfacecontainer.hxx>
+#include <rtl/string.hxx>
+
+
+namespace logging
+{
+
+ class LogHandlerHelper
+ {
+ private:
+ // <attributes>
+ rtl_TextEncoding m_eEncoding;
+ sal_Int32 m_nLevel;
+ css::uno::Reference< css::logging::XLogFormatter >
+ m_xFormatter;
+ // <//attributes>
+
+ css::uno::Reference< css::uno::XComponentContext >
+ m_xContext;
+ ::osl::Mutex& m_rMutex;
+ ::cppu::OBroadcastHelper& m_rBHelper;
+ bool m_bInitialized;
+
+ public:
+ LogHandlerHelper(
+ const css::uno::Reference< css::uno::XComponentContext >& _rxContext,
+ ::osl::Mutex& _rMutex,
+ ::cppu::OBroadcastHelper& _rBHelper
+ );
+
+ public:
+ void setIsInitialized() { m_bInitialized = true; }
+
+ bool getEncoding( OUString& _out_rEncoding ) const;
+ bool setEncoding( std::u16string_view _rEncoding );
+
+ rtl_TextEncoding
+ getTextEncoding() const { return m_eEncoding; }
+
+ const css::uno::Reference< css::logging::XLogFormatter >&
+ getFormatter() const { return m_xFormatter; }
+ void
+ setFormatter( const css::uno::Reference< css::logging::XLogFormatter >& _rxFormatter )
+ {
+ m_xFormatter = _rxFormatter;
+ }
+
+ sal_Int32
+ getLevel() const { return m_nLevel; }
+ void
+ setLevel( const sal_Int32 _nLevel )
+ {
+ m_nLevel = _nLevel;
+ }
+
+ /** prepares implementation of a public accessible method of a log handler
+
+ <code>enterMethod</code> does the following things:
+ <ul><li>It acquires the mutex given in the constructor.</li>
+ <li>It checks whether the component is already initialized, and throws an exception if not os.</li>
+ <li>It checks whether the component is already disposed, and throws an exception if not os.</li>
+ <li>It creates a default formatter (PlainTextFormatter), if no formatter exists at this time.</li>
+ </ul>
+ */
+ void enterMethod();
+
+ /** formats a record for publishing it
+
+ The method first checks whether the records log level is greater or equal our own
+ log level. If not, <FALSE/> is returned.
+
+ Second, our formatter is used to create a unicode string from the log record. If an error occurs
+ during this, e.g. if the formatter is <NULL/> or throws an exception during formatting,
+ <FALSE/> is returned.
+
+ Finally, the unicode string is encoded into a byte string, using our encoding setting. Then,
+ <TRUE/> is returned.
+ */
+ bool formatForPublishing( const css::logging::LogRecord& _rRecord, OString& _out_rEntry ) const;
+
+ /** retrieves our formatter's heading, encoded with our encoding
+
+ @return <TRUE/> in case of success, <FALSE/> if any error occurred
+ */
+ bool getEncodedHead( OString& _out_rHead ) const;
+
+ /** retrieves our formatter's tail, encoded with our encoding
+
+ @return <TRUE/> in case of success, <FALSE/> if any error occurred
+ */
+ bool getEncodedTail( OString& _out_rTail ) const;
+
+ /** initializes the instance from a collection of named settings
+
+ The recognized named settings are <code>Encoding</code>, <code>Formatter</code>, and <code>Level</code>,
+ which initialize the respective attributes.
+
+ Settings which are recognized are remove from the given collection. This allows
+ the caller to determine whether or not the collection contained any unsupported
+ items, and react appropriately.
+
+ @throws IllegalArgumentException
+ if one of the values in the collection is of wrong type.
+ */
+ void initFromSettings( const ::comphelper::NamedValueCollection& _rSettings );
+ };
+
+
+} // namespace logging
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */