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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 .
+ */
+
+#include <sal/config.h>
+
+#include <com/sun/star/logging/XCsvLogFormatter.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+#include <rtl/ustrbuf.hxx>
+#include <sal/macros.h>
+#include <sal/types.h>
+
+#include <stdio.h>
+#include <string_view>
+
+namespace logging
+{
+ using ::com::sun::star::uno::Sequence;
+ using ::com::sun::star::logging::LogRecord;
+
+ namespace {
+
+ // formats for csv files as defined by RFC4180
+ class CsvFormatter : public cppu::WeakImplHelper<css::logging::XCsvLogFormatter, css::lang::XServiceInfo>
+ {
+ public:
+ virtual OUString SAL_CALL formatMultiColumn(const Sequence< OUString>& column_data) override;
+
+ CsvFormatter();
+
+ private:
+ // XCsvLogFormatter
+ virtual sal_Bool SAL_CALL getLogEventNo() override;
+ virtual sal_Bool SAL_CALL getLogThread() override;
+ virtual sal_Bool SAL_CALL getLogTimestamp() override;
+ virtual sal_Bool SAL_CALL getLogSource() override;
+ virtual Sequence< OUString > SAL_CALL getColumnnames() override;
+
+ virtual void SAL_CALL setLogEventNo( sal_Bool log_event_no ) override;
+ virtual void SAL_CALL setLogThread( sal_Bool log_thread ) override;
+ virtual void SAL_CALL setLogTimestamp( sal_Bool log_timestamp ) override;
+ virtual void SAL_CALL setLogSource( sal_Bool log_source ) override;
+ virtual void SAL_CALL setColumnnames( const Sequence< OUString>& column_names) override;
+
+ // XLogFormatter
+ virtual OUString SAL_CALL getHead( ) override;
+ virtual OUString SAL_CALL format( const LogRecord& Record ) override;
+ virtual OUString SAL_CALL getTail( ) override;
+
+ // XServiceInfo
+ virtual OUString SAL_CALL getImplementationName() override;
+ virtual sal_Bool SAL_CALL supportsService( const OUString& service_name ) override;
+ virtual Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+ private:
+ bool m_LogEventNo;
+ bool m_LogThread;
+ bool m_LogTimestamp;
+ bool m_LogSource;
+ bool m_MultiColumn;
+ css::uno::Sequence< OUString > m_Columnnames;
+ };
+
+ }
+} // namespace logging
+
+// private helpers
+namespace
+{
+ const sal_Unicode quote_char = '"';
+ const sal_Unicode comma_char = ',';
+ constexpr OUStringLiteral dos_newline = u"\r\n";
+
+ bool needsQuoting(std::u16string_view str)
+ {
+ return str.find_first_of(u"\",\n\r") != std::u16string_view::npos;
+ };
+
+ void appendEncodedString(OUStringBuffer& buf, const OUString& str)
+ {
+ if(needsQuoting(str))
+ {
+ // each double-quote will get replaced by two double-quotes
+ buf.append(quote_char);
+ const sal_Int32 buf_offset = buf.getLength();
+ const sal_Int32 str_length = str.getLength();
+ buf.append(str);
+ // special treatment for the last character
+ if(quote_char==str[str_length-1])
+ buf.append(quote_char);
+ // iterating backwards because the index at which we insert won't be shifted
+ // when moving that way.
+ for(sal_Int32 i = str_length; i>=0; )
+ {
+ i=str.lastIndexOf(quote_char, --i);
+ if(i!=-1)
+ buf.insert(buf_offset + i, quote_char);
+ }
+ buf.append(quote_char);
+ }
+ else
+ buf.append(str);
+ };
+}
+
+namespace logging
+{
+ CsvFormatter::CsvFormatter()
+ :m_LogEventNo(true),
+ m_LogThread(true),
+ m_LogTimestamp(true),
+ m_LogSource(false),
+ m_MultiColumn(false),
+ m_Columnnames({ "message" })
+ { }
+
+ sal_Bool CsvFormatter::getLogEventNo()
+ {
+ return m_LogEventNo;
+ }
+
+ sal_Bool CsvFormatter::getLogThread()
+ {
+ return m_LogThread;
+ }
+
+ sal_Bool CsvFormatter::getLogTimestamp()
+ {
+ return m_LogTimestamp;
+ }
+
+ sal_Bool CsvFormatter::getLogSource()
+ {
+ return m_LogSource;
+ }
+
+ Sequence< OUString > CsvFormatter::getColumnnames()
+ {
+ return m_Columnnames;
+ }
+
+ void CsvFormatter::setLogEventNo(sal_Bool log_event_no)
+ {
+ m_LogEventNo = log_event_no;
+ }
+
+ void CsvFormatter::setLogThread(sal_Bool log_thread)
+ {
+ m_LogThread = log_thread;
+ }
+
+ void CsvFormatter::setLogTimestamp(sal_Bool log_timestamp)
+ {
+ m_LogTimestamp = log_timestamp;
+ }
+
+ void CsvFormatter::setLogSource(sal_Bool log_source)
+ {
+ m_LogSource = log_source;
+ }
+
+ void CsvFormatter::setColumnnames(const Sequence< OUString >& columnnames)
+ {
+ m_Columnnames = columnnames;
+ m_MultiColumn = (m_Columnnames.getLength()>1);
+ }
+
+ OUString SAL_CALL CsvFormatter::getHead( )
+ {
+ OUStringBuffer buf;
+ if(m_LogEventNo)
+ buf.append("event no,");
+ if(m_LogThread)
+ buf.append("thread,");
+ if(m_LogTimestamp)
+ buf.append("timestamp,");
+ if(m_LogSource)
+ buf.append("class,method,");
+ sal_Int32 columns = m_Columnnames.getLength();
+ for(sal_Int32 i=0; i<columns; i++)
+ {
+ buf.append(m_Columnnames[i]);
+ buf.append(comma_char);
+ }
+ buf.setLength(buf.getLength()-1);
+ buf.append(dos_newline);
+ return buf.makeStringAndClear();
+ }
+
+ OUString SAL_CALL CsvFormatter::format( const LogRecord& record )
+ {
+ OUStringBuffer aLogEntry;
+
+ if(m_LogEventNo)
+ {
+ aLogEntry.append( record.SequenceNumber );
+ aLogEntry.append(comma_char);
+ }
+
+ if(m_LogThread)
+ {
+ aLogEntry.append( record.ThreadID );
+ aLogEntry.append(comma_char);
+ }
+
+ if(m_LogTimestamp)
+ {
+ if ( record.LogTime.Year < -9999 || 9999 < record.LogTime.Year
+ || record.LogTime.Month < 1 || 12 < record.LogTime.Month
+ || record.LogTime.Day < 1 || 31 < record.LogTime.Day
+ || 24 < record.LogTime.Hours
+ || 60 < record.LogTime.Minutes
+ || 60 < record.LogTime.Seconds
+ || 999999999 < record.LogTime.NanoSeconds)
+ {
+ throw css::lang::IllegalArgumentException("invalid date", static_cast<cppu::OWeakObject*>(this), 1);
+ }
+
+ // ISO 8601
+ char buffer[ SAL_N_ELEMENTS("-32768-65535-65535T65535:65535:65535.4294967295") ];
+ const size_t buffer_size = sizeof( buffer );
+ snprintf( buffer, buffer_size, "%04i-%02u-%02uT%02u:%02u:%02u.%09" SAL_PRIuUINT32,
+ static_cast<int>(record.LogTime.Year),
+ static_cast<unsigned int>(record.LogTime.Month),
+ static_cast<unsigned int>(record.LogTime.Day),
+ static_cast<unsigned int>(record.LogTime.Hours),
+ static_cast<unsigned int>(record.LogTime.Minutes),
+ static_cast<unsigned int>(record.LogTime.Seconds),
+ record.LogTime.NanoSeconds );
+ aLogEntry.appendAscii( buffer );
+ aLogEntry.append(comma_char);
+ }
+
+ if(m_LogSource)
+ {
+ appendEncodedString(aLogEntry, record.SourceClassName);
+ aLogEntry.append(comma_char);
+
+ appendEncodedString(aLogEntry, record.SourceMethodName);
+ aLogEntry.append(comma_char);
+ }
+
+ // if the CsvFormatter has multiple columns set via setColumnnames(), the
+ // message of the record is expected to be encoded with formatMultiColumn
+ // if the CsvFormatter has only one column set, the message is expected not
+ // to be encoded
+ if(m_MultiColumn)
+ aLogEntry.append(record.Message);
+ else
+ appendEncodedString(aLogEntry, record.Message);
+
+ aLogEntry.append( dos_newline );
+ return aLogEntry.makeStringAndClear();
+ }
+
+ OUString SAL_CALL CsvFormatter::getTail( )
+ {
+ return OUString();
+ }
+
+ OUString SAL_CALL CsvFormatter::formatMultiColumn(const Sequence< OUString>& column_data)
+ {
+ sal_Int32 columns = column_data.getLength();
+ OUStringBuffer buf;
+ for(int i=0; i<columns; i++)
+ {
+ appendEncodedString(buf, column_data[i]);
+ buf.append(comma_char);
+ }
+ buf.setLength(buf.getLength()-1);
+ return buf.makeStringAndClear();
+ }
+
+ sal_Bool SAL_CALL CsvFormatter::supportsService( const OUString& service_name )
+ {
+ return cppu::supportsService(this, service_name);
+ }
+
+ OUString SAL_CALL CsvFormatter::getImplementationName()
+ {
+ return "com.sun.star.comp.extensions.CsvFormatter";
+ }
+
+ Sequence< OUString > SAL_CALL CsvFormatter::getSupportedServiceNames()
+ {
+ return { "com.sun.star.logging.CsvFormatter" };
+ }
+
+} // namespace logging
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
+com_sun_star_comp_extensions_CsvFormatter(
+ css::uno::XComponentContext *,
+ css::uno::Sequence<css::uno::Any> const &)
+{
+ return cppu::acquire(new logging::CsvFormatter());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */