Mercurial > molko
diff src/libmlk-core/core/trace.c @ 320:8f9937403749
misc: improve loading of data
author | David Demelier <markand@malikania.fr> |
---|---|
date | Fri, 01 Oct 2021 20:30:00 +0200 |
parents | libmlk-core/core/trace.c@d01e83210ca2 |
children | d83b686dcf63 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/libmlk-core/core/trace.c Fri Oct 01 20:30:00 2021 +0200 @@ -0,0 +1,61 @@ +/* + * trace.h -- non-fatal message logs + * + * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <assert.h> +#include <stdio.h> + +#include "trace.h" + +static void +default_handler(const char *line) +{ + assert(line); + + puts(line); +} + +void (*trace_handler)(const char *) = default_handler; + +void +tracef(const char *fmt, ...) +{ + assert(fmt); + + va_list ap; + + if (!trace_handler) + return; + + va_start(ap, fmt); + traceva(fmt, ap); + va_end(ap); +} + +void +traceva(const char *fmt, va_list ap) +{ + assert(fmt); + + char buf[TRACE_LINE_MAX]; + + if (!trace_handler) + return; + + vsnprintf(buf, sizeof (buf), fmt, ap); + trace_handler(buf); +}