pihelper-c/PiHelper/log.c

45 lines
1.4 KiB
C

/**
* Copyright © 2019, 2020 William Brawner.
*
* This file is part of PiHelper.
*
* PiHelper 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.
*
* PiHelper 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 PiHelper. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "log.h"
int LOG_LEVEL = 2; // Default to info logs
void set_log_level(int level) {
LOG_LEVEL = level;
}
void write_log(int level, char * format, ...) {
if (level > LOG_LEVEL) return;
va_list args;
va_start(args, format);
int format_len = strlen(format);
char * new_format = malloc(format_len + 1);
memcpy(new_format, format, format_len);
new_format[format_len] = '\n';
new_format[format_len + 1] = '\0';
FILE *stream = level < PIHELPER_LOG_INFO ? stderr : stdout;
vfprintf(stream, new_format, args);
va_end(args);
}