/*
* Add an output channel to <logger> that writes to the file specified with
* <fmt> and the subsequent parameters. If the file could not be opened, -1 is
* returned and the channel is not created.
*/
int logToFile(Logger *logger, const char *fmt, ...)
{
va_list ap;
FILE *fp;
Buffer filename = { 0 };
va_start(ap, fmt);
bufSetV(&filename, fmt, ap);
va_end(ap);
if ((fp = fopen(bufGet(&filename), "w")) == NULL) {
bufReset(&filename);
return -1;
}
else {
pthread_mutex_lock(&logger->access);
LOG_Output *out = log_create_output(logger, LOG_OT_FILE);
out->u.fp = fp;
pthread_mutex_unlock(&logger->access);
bufReset(&filename);
return 0;
}
}
/*
* Set <buf> to a string formatted according to <fmt> and the subsequent parameters.
*/
Buffer *bufSetF(Buffer *buf, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
bufSetV(buf, fmt, ap);
va_end(ap);
return buf;
}
/*
* Add a string defined by <fmt> and the subsequent arguments to log messages.
*/
void logWithString(Logger *logger, const char *fmt, ...)
{
va_list ap;
Buffer string = { 0 };
pthread_mutex_lock(&logger->access);
LOG_Prefix *prefix = log_add_prefix(logger, LOG_PT_STR);
va_start(ap, fmt);
bufSetV(&string, fmt, ap);
va_end(ap);
prefix->u.string = bufDetach(&string);
pthread_mutex_unlock(&logger->access);
}
