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#include <stdbool.h>
#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#define QLOG_BUF_SIZE 512
static const char default_tag[] = "libqrtr";
static const char *current_tag = default_tag;
static int min_priority = LOG_INFO;
static bool logging_to_syslog = false;
void qlog_setup(const char *tag, bool use_syslog)
{
current_tag = tag;
logging_to_syslog = use_syslog;
openlog(tag, LOG_PID, LOG_USER);
}
void qlog_set_min_priority(int priority)
{
if (priority < LOG_EMERG || priority > LOG_DEBUG)
return;
min_priority = priority;
}
static const char *get_priority_string(int priority)
{
switch (priority) {
case LOG_EMERG:
return "EMERG";
case LOG_ALERT:
return "ALERT";
case LOG_CRIT:
return "CRIT";
case LOG_ERR:
return "ERROR";
case LOG_WARNING:
return "WARNING";
case LOG_NOTICE:
return "NOTICE";
case LOG_INFO:
return "INFO";
case LOG_DEBUG:
return "DEBUG";
}
return "";
}
void qlog(int priority, const char *format, ...)
{
va_list ap;
if (priority > min_priority)
return;
va_start(ap, format);
if (logging_to_syslog) {
vsyslog(priority, format, ap);
} else {
char buf[QLOG_BUF_SIZE];
vsnprintf(buf, QLOG_BUF_SIZE, format, ap);
fprintf(stderr, "%s %s: %s\n",
get_priority_string(priority), current_tag, buf);
}
va_end(ap);
}
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