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Diffstat (limited to 'extensions/source/logging/csvformatter.cxx')
| -rw-r--r-- | extensions/source/logging/csvformatter.cxx | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/extensions/source/logging/csvformatter.cxx b/extensions/source/logging/csvformatter.cxx new file mode 100644 index 0000000000..a9ea13f208 --- /dev/null +++ b/extensions/source/logging/csvformatter.cxx @@ -0,0 +1,319 @@ +/* -*- 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 OUString dos_newline = u"\r\n"_ustr; + + bool needsQuoting(std::u16string_view str) + { + return str.find_first_of(u"\",\n\r") != std::u16string_view::npos; + }; + + void appendEncodedString(OUStringBuffer& buf, std::u16string_view 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 size_t str_length = str.size(); + 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(size_t i = str_length;; ) + { + --i; + i=str.substr(i).rfind(quote_char); + if(i==std::u16string_view::npos) + break; + 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] + OUStringChar(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 + comma_char); + } + + if(m_LogThread) + { + aLogEntry.append(record.ThreadID + OUStringChar(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: */ |