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/*
* Public logging source file
* Copyright (c) 2017 Sergey Kostanbaev <sergey.kostanbaev@fairwaves.co>
* For more information, please visit: http://xtrx.io
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xtrxll_log.h"
#include <time.h>
#include <stdarg.h>
#include <unistd.h>
static void s_def_logging(int l,
const struct tm* stm,
int nsec,
const char subsystem[4],
const char* function,
const char* file,
int lineno,
const char* fmt,
va_list list);
enum xtrxll_loglevel s_loglevel = XTRXLL_DEBUG_REGS;
static FILE* s_logfile = NULL;
static int s_colorize = 0;
static logfunc_t s_log_function = s_def_logging;
static const char* s_term_name[] =
{
"\033[0m",
"\033[0;31mERROR: ",
"\033[0;32mWARN: ",
"\033[0;33mINFO: ",
"\033[0;34mRFIC: ",
"\033[0;35mDEBUG: ",
"\033[0;36mREGS: ",
"\033[0;37mTRACE: ",
};
#define MAX_LOG_LINE 1024
void s_def_logging(int l,
const struct tm* stm,
int nsec,
const char subsystem[4],
const char* function,
const char* file,
int lineno,
const char* fmt,
va_list list)
{
(void)file;
char buf[MAX_LOG_LINE];
size_t stsz;
int sz;
stsz = strftime(buf, sizeof(buf), "%H:%M:%S.", stm);
sz = snprintf(buf + stsz - 1, sizeof(buf) - stsz, ".%06d %s",
(int)(nsec/1000),
s_term_name[l] + ((s_colorize > 0) ? 0 : 7));
if (sz < 0) {
buf[MAX_LOG_LINE - 1] = 0;
goto out_truncated;
}
stsz += (size_t)sz;
if (s_loglevel > XTRXLL_DEBUG) {
sz = snprintf(buf + stsz - 1, sizeof(buf) - stsz, " %s:%d [%4.4s] ",
function, lineno,
subsystem);
} else {
sz = snprintf(buf + stsz - 1, sizeof(buf) - stsz, " [%4.4s] ",
subsystem);
}
if (sz < 0) {
buf[MAX_LOG_LINE - 1] = 0;
goto out_truncated;
}
stsz += (size_t)sz;
sz = vsnprintf(buf + stsz - 1, sizeof(buf) - stsz, fmt, list);
if (sz < 0) {
buf[MAX_LOG_LINE - 1] = 0;
goto out_truncated;
}
stsz += (size_t)sz;
if (buf[stsz-2] != '\n') {
buf[stsz-1] = '\n';
buf[stsz] = 0;
stsz++;
}
if (s_colorize) {
sz = snprintf(buf + stsz - 1, sizeof(buf) - stsz, "%s", s_term_name[0]);
if (sz < 0) {
buf[MAX_LOG_LINE - 1] = 0;
}
}
out_truncated:
fputs(buf, s_logfile);
}
void xtrxll_set_logfunc(logfunc_t function)
{
s_log_function = (function) ? function : s_def_logging;
}
void xtrxll_log(enum xtrxll_loglevel l,
const char subsystem[4],
const char* function,
const char *file,
int line,
const char* fmt, ...)
{
if (s_loglevel < l)
return;
va_list ap;
va_start(ap, fmt);
xtrxll_vlog(l, subsystem, function, file, line, fmt, ap);
va_end(ap);
}
void xtrxll_vlog(enum xtrxll_loglevel l,
const char subsystem[4],
const char* function,
const char *file,
int line,
const char* fmt, va_list list)
{
if (s_loglevel < l)
return;
struct timespec tp;
clock_gettime(CLOCK_REALTIME, &tp);
const struct tm* stm = xtrxll_localtime(tp.tv_sec);
s_log_function(l, stm, (int)tp.tv_nsec, subsystem, function, file, line, fmt, list);
}
void xtrxll_log_initialize(FILE* logfile)
{
if (logfile == NULL) {
if (s_logfile == NULL) {
s_logfile = stderr;
}
} else {
s_logfile = logfile;
}
s_colorize = isatty(fileno(s_logfile));
}
void xtrxll_set_loglevel(enum xtrxll_loglevel l)
{
s_loglevel = l;
}
enum xtrxll_loglevel xtrxll_get_loglevel(void)
{
return s_loglevel;
}
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