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logger.h

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    logger.h 3.51 KiB
    /*
     *  Copyright (C) 2004-2015 Savoir-Faire Linux Inc.
     *  Author: Julien Bonjean <julien.bonjean@savoirfairelinux.com>
     *  Author: Guillaume Roguez <guillaume.roguez@savoirfairelinux.com>
     *
     *  This program is free software; you can redistribute it and/or modify
     *  it under the terms of the GNU General Public License as published by
     *  the Free Software Foundation; either version 3 of the License, or
     *  (at your option) any later version.
     *
     *  This program is distributed in the hope that it will be useful,
     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     *  GNU General Public License for more details.
     *
     *  You should have received a copy of the GNU General Public License
     *  along with this program; if not, write to the Free Software
     *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
     *
     *  Additional permission under GNU GPL version 3 section 7:
     *
     *  If you modify this program, or any covered work, by linking or
     *  combining it with the OpenSSL project's OpenSSL library (or a
     *  modified version of that library), containing parts covered by the
     *  terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
     *  grants you additional permission to convey the resulting work.
     *  Corresponding Source for a non-source form of such a combination
     *  shall include the source code for the parts of OpenSSL used as well
     *  as that of the covered work.
     */
    
    #pragma once
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    #include <stdarg.h>
    
    #define LOGFILE "dring"
    
    /**
     * Print something, coloring it depending on the level
     */
    void logger(const int level, const char* format, ...);
    void vlogger(const int level, const char* format, va_list);
    
    /**
     * Allow writing on the console
     */
    void setConsoleLog(int c);
    
    /**
     * When debug mode is not set, logging will not print anything
     */
    void setDebugMode(int d);
    
    /**
     * Return the current mode
     */
    int getDebugMode(void);
    
    /**
     * Thread-safe function to print the stringified contents of errno
     */
    void strErr();
    
    #define STR(EXP) #EXP
    #define XSTR(X) STR(X)
    
    // Do not remove the "| " in following without modifying vlogger() code
    #define LOG_FORMAT(M, ...) FILE_NAME ":" XSTR(__LINE__) "| " M, ##__VA_ARGS__
    
    #ifdef __ANDROID__
    
    #include <android/log.h>
    
    #ifndef APP_NAME
    #define APP_NAME "libdring"
    #endif /* APP_NAME */
    
    // Avoid printing whole path on android
    #define FILE_NAME (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
    
    // because everyone likes reimplementing the wheel
    #define LOG_ERR     ANDROID_LOG_ERROR
    #define LOG_WARNING ANDROID_LOG_WARN
    #define LOG_INFO    ANDROID_LOG_INFO
    #define LOG_DEBUG   ANDROID_LOG_DEBUG
    
    #define LOGGER(M, LEVEL, ...) __android_log_print(LEVEL, APP_NAME, LOG_FORMAT(M, ##__VA_ARGS__))
    
    #elif defined(_WIN32)
    
    #include "winsyslog.h"
    
    #define LOG_ERR     EVENTLOG_ERROR_TYPE
    #define LOG_WARNING EVENTLOG_WARNING_TYPE
    #define LOG_INFO    EVENTLOG_INFORMATION_TYPE
    #define LOG_DEBUG   EVENTLOG_SUCCESS
    
    #define FILE_NAME __FILE__
    
    #define LOGGER(M, LEVEL, ...) logger(LEVEL, LOG_FORMAT(M, ##__VA_ARGS__))
    
    #else
    
    #include <syslog.h>
    
    #define FILE_NAME __FILE__
    
    #define LOGGER(M, LEVEL, ...) logger(LEVEL, LOG_FORMAT(M, ##__VA_ARGS__))
    
    #endif /* __ANDROID__ _WIN32 */
    
    #define RING_ERR(M, ...)   LOGGER(M, LOG_ERR, ##__VA_ARGS__)
    #define RING_WARN(M, ...)  LOGGER(M, LOG_WARNING, ##__VA_ARGS__)
    #define RING_INFO(M, ...)  LOGGER(M, LOG_INFO, ##__VA_ARGS__)
    #define RING_DBG(M, ...)   LOGGER(M, LOG_DEBUG, ##__VA_ARGS__)
    
    #ifdef __cplusplus
    }
    #endif