mirror of
https://github.com/irungentoo/toxcore.git
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137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/*
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* Text logging abstraction.
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*/
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/*
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* Copyright © 2016-2018 The TokTok team.
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* Copyright © 2013,2015 Tox project.
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*
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* This file is part of Tox, the free peer to peer instant messenger.
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*
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* Tox is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Tox is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Tox. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "logger.h"
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#include <assert.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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struct Logger {
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logger_cb *callback;
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void *context;
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void *userdata;
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};
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#ifdef USE_STDERR_LOGGER
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static const char *logger_level_name(Logger_Level level)
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{
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switch (level) {
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case LOGGER_LEVEL_TRACE:
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return "TRACE";
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case LOGGER_LEVEL_DEBUG:
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return "DEBUG";
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case LOGGER_LEVEL_INFO:
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return "INFO";
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case LOGGER_LEVEL_WARNING:
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return "WARNING";
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case LOGGER_LEVEL_ERROR:
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return "ERROR";
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}
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return "<unknown>";
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}
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static void logger_stderr_handler(void *context, Logger_Level level, const char *file, int line, const char *func,
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const char *message, void *userdata)
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{
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// GL stands for "global logger".
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fprintf(stderr, "[GL] %s %s:%d(%s): %s\n", logger_level_name(level), file, line, func, message);
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}
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static const Logger logger_stderr = {
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logger_stderr_handler,
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nullptr,
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nullptr,
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};
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#endif
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/**
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* Public Functions
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*/
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Logger *logger_new(void)
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{
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return (Logger *)calloc(1, sizeof(Logger));
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}
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void logger_kill(Logger *log)
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{
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free(log);
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}
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void logger_callback_log(Logger *log, logger_cb *function, void *context, void *userdata)
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{
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log->callback = function;
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log->context = context;
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log->userdata = userdata;
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}
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void logger_write(const Logger *log, Logger_Level level, const char *file, int line, const char *func,
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const char *format, ...)
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{
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if (!log) {
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#ifdef USE_STDERR_LOGGER
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log = &logger_stderr;
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#else
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fprintf(stderr, "NULL logger not permitted.\n");
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abort();
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#endif
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}
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if (!log->callback) {
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return;
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}
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// Only pass the file name, not the entire file path, for privacy reasons.
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// The full path may contain PII of the person compiling toxcore (their
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// username and directory layout).
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const char *filename = strrchr(file, '/');
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file = filename ? filename + 1 : file;
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#if defined(_WIN32) || defined(__CYGWIN__)
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// On Windows, the path separator *may* be a backslash, so we look for that
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// one too.
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const char *windows_filename = strrchr(file, '\\');
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file = windows_filename ? windows_filename + 1 : file;
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#endif
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// Format message
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char msg[1024];
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va_list args;
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va_start(args, format);
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vsnprintf(msg, sizeof(msg), format, args);
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va_end(args);
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log->callback(log->context, level, file, line, func, msg, log->userdata);
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}
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