/*
* Print a message and return to caller.
* Caller specifies "errnoflag".
*/
static void err_doit( int fd, int errnoflag, const char *fmt, va_list ap )
{
int errno_save;
char buf[MAXLINE];
errno_save = errno; /* value caller might want printed */
strcpy( buf, err_tstamp() ); /* prepend a message with time stamp */
vsprintf( buf + strlen( buf ), fmt, ap );
if ( errnoflag )
sprintf( buf + strlen( buf ), ": %s\n", strerror( errno_save ) );
else
strcat( buf, "\n" );
write( fd, buf, strlen( buf ) );
errno = errno_save;
}
/**
* 打印错误文字消息于指定 fd 上，
* 随后返回调用者
*/
static void err_doit(int fd, int errnoflag, const char *fmt, va_list ap)
{
int errno_save;
char buf[512];
errno_save = errno;
strcpy(buf, err_tstamp());
vsprintf(buf + strlen(buf), fmt, ap);
if (errnoflag)
sprintf(buf + strlen(buf), fmt, ap);
else
strcat(buf, "\n");
write(fd, buf, strlen(buf));
errno = errno_save;
}
void
hoxLog(enum hoxLogLevel level, const char *fmt, ...)
{
static const char *levels[] = { "FATAL", "SYS_FATAL",
"ERROR", "SYS_ERROR",
"WARN", "SYS_WARN",
"INFO",
"DEBUG"
};
int errno_save;
char buf[MAXLINE];
int errnoflag = ( level == LOG_SYS_FATAL
|| level == LOG_SYS_ERROR
|| level == LOG_SYS_WARN )
? 1 : 0;
int fd = s_errfd; // TODO: Defined in main.cpp
va_list ap;
va_start( ap, fmt );
errno_save = errno; /* value caller might want printed */
snprintf(buf, sizeof(buf), "%s%s: ", err_tstamp(), levels[level]);
vsprintf( buf + strlen( buf ), fmt, ap );
if ( errnoflag )
{
sprintf( buf + strlen( buf ), ": %s\n", strerror( errno_save ) );
}
else
{
strcat( buf, "\n" );
}
write( fd, buf, strlen( buf ) );
errno = errno_save;
va_end( ap );
}