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/**
* @file print.c
* @note Copyright (C) 2011 Richard Cochran <richardcochran@gmail.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 2 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.
*/
#include <stdarg.h>
#include <stdio.h>
#include <syslog.h>
#include <time.h>
#include <unistd.h>
#include "print.h"
static int verbose = 0;
int print_level = LOG_INFO;
static int use_syslog = 1;
static const char *progname;
static const char *message_tag;
void print_set_progname(const char *name)
{
progname = name;
}
void print_set_tag(const char *tag)
{
message_tag = tag;
}
void print_set_syslog(int value)
{
use_syslog = value ? 1 : 0;
}
void print_set_level(int level)
{
print_level = level;
}
void print_set_verbose(int value)
{
verbose = value ? 1 : 0;
}
void print(int level, char const *format, ...)
{
char buf[1024], tag[128], *s;
struct timespec ts;
const char *v;
va_list ap;
FILE *f;
if (level > print_level)
return;
clock_gettime(CLOCK_MONOTONIC, &ts);
va_start(ap, format);
vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap);
if (message_tag) {
snprintf(tag, sizeof(tag), "%s ", message_tag);
v = "{level}";
s = strstr(tag, v);
if (s) {
*s = '0' + level;
memmove(s + 1, s + strlen(v), strlen(s + strlen(v)) + 1);
}
} else {
tag[0] = '\0';
}
if (verbose) {
f = level >= LOG_NOTICE ? stdout : stderr;
fprintf(f, "%s[%lld.%03ld]: %s%s\n",
progname ? progname : "",
(long long)ts.tv_sec, ts.tv_nsec / 1000000, tag, buf);
fflush(f);
}
if (use_syslog) {
syslog(level, "[%lld.%03ld] %s%s",
(long long)ts.tv_sec, ts.tv_nsec / 1000000, tag, buf);
}
}
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