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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/.
*/
#ifndef INCLUDED_SAL_DETAIL_LOG_H
#define INCLUDED_SAL_DETAIL_LOG_H
#include "sal/config.h"
#include "sal/saldllapi.h"
#include "sal/types.h"
/** @cond INTERNAL */
/* This header makes available replacements working in both C and C++ for the
obsolete osl/diagnose.h functionality that in turn is used from both C and
C++ code and the obsolete tools/debug.hxx and
canvas/inc/canvas/verbosetrace.hxx functionality that uses printf-style
formatting. Once that obsolete functionality is removed, this header can be
removed, too.
This header uses variadic macros in both C (where they are officially only
supported since C99) and C++ (where they are officially only supported since
C++11). It appears that all relevant compilers (esp. GCC 4.0 and MS VS 2008
Express) already support them in their C and C++ dialects. See also
<http://wiki.apache.org/stdcxx/C++0xCompilerSupport>.
Avoid the use of other sal code in this header as much as possible, so that
this code can be called from other sal code without causing endless
recursion.
*/
#if defined __cplusplus
extern "C" {
#endif
/*
Clang warns about 'sal_True && sal_True' (those being integers and not booleans)
when it sees preprocessed source (-save-temps or using icecream)
*/
#if defined __cplusplus
#define SAL_LOG_TRUE true
#define SAL_LOG_FALSE false
#else
#define SAL_LOG_TRUE sal_True
#define SAL_LOG_FALSE sal_False
#endif
enum sal_detail_LogLevel {
SAL_DETAIL_LOG_LEVEL_INFO, SAL_DETAIL_LOG_LEVEL_WARN,
SAL_DETAIL_LOG_LEVEL_DEBUG = SAL_MAX_ENUM
};
SAL_DLLPUBLIC void SAL_CALL sal_detail_logFormat(
enum sal_detail_LogLevel level, char const * area, char const * where,
char const * format, ...)
/* TODO: enabling this will produce a huge amount of -Werror=format errors: */
#if defined __GNUC__ && 0
__attribute__((format(printf, 4, 5)))
#endif
;
#if defined __cplusplus
}
#endif
#define SAL_DETAIL_LOG_FORMAT(condition, level, area, where, ...) \
do { \
if (condition) { \
sal_detail_logFormat((level), (area), (where), __VA_ARGS__); \
} \
} while (SAL_LOG_FALSE)
#if defined SAL_LOG_INFO
#define SAL_DETAIL_ENABLE_LOG_INFO SAL_LOG_TRUE
#else
#define SAL_DETAIL_ENABLE_LOG_INFO SAL_LOG_FALSE
#endif
#if defined SAL_LOG_WARN
#define SAL_DETAIL_ENABLE_LOG_WARN SAL_LOG_TRUE
#else
#define SAL_DETAIL_ENABLE_LOG_WARN SAL_LOG_FALSE
#endif
#define SAL_DETAIL_WHERE __FILE__ ":" SAL_STRINGIFY(__LINE__) ": "
#define SAL_DETAIL_INFO_IF_FORMAT(condition, area, ...) \
SAL_DETAIL_LOG_FORMAT( \
SAL_DETAIL_ENABLE_LOG_INFO && (condition), SAL_DETAIL_LOG_LEVEL_INFO, \
area, SAL_DETAIL_WHERE, __VA_ARGS__)
#define SAL_DETAIL_WARN_IF_FORMAT(condition, area, ...) \
SAL_DETAIL_LOG_FORMAT( \
SAL_DETAIL_ENABLE_LOG_WARN && (condition), SAL_DETAIL_LOG_LEVEL_WARN, \
area, SAL_DETAIL_WHERE, __VA_ARGS__)
/** @endcond */
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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