1 files changed, 73 insertions, 0 deletions
diff --git a/mmss/log.c b/mmss/log.c
new file mode 100644
index 0000000..5599e95
--- /dev/null
+++ b/mmss/log.c
@@ -0,0 +1,73 @@
+/*
+  Copyright (c) 2013, Matthias Schiffer <mschiffer@universe-factory.net>
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#include "mmss.h"
+
+#include <stdio.h>
+
+
+static inline int snprintf_safe(char *buffer, size_t size, const char *format, ...) {
+	va_list ap;
+	va_start(ap, format);
+	int ret = vsnprintf(buffer, size, format, ap);
+	va_end(ap);
+
+	return ret < 0 ? 0 : ret > size ? size : ret;
+}
+
+static inline const char* get_log_prefix(int log_level) {
+	switch(log_level) {
+	case LOG_CRIT:
+		return "Fatal: ";
+	case LOG_ERR:
+		return "Error: ";
+	case LOG_WARNING:
+		return "Warning: ";
+	case LOG_NOTICE:
+		return "Info: ";
+	case LOG_INFO:
+		return "Verbose: ";
+	case LOG_DEBUG:
+		return "DEBUG: ";
+	default:
+		return "";
+	}
+}
+
+
+void gmrf_logf(gmrf_t *gmrf, int priority, const char *format, ...) {
+	char buf[1024];
+	size_t pos = 0;
+
+	pos += snprintf_safe(buf, sizeof(buf), "[% 5u.%03u] %s: %s", gmrf->mmss->now/1000, gmrf->mmss->now%1000, gmrf->name, get_log_prefix(priority));
+
+        va_list ap;
+        va_start(ap, format);
+	vsnprintf(buf+pos, sizeof(buf)-pos, format, ap);
+	va_end(ap);
+
+	fprintf(stderr, "%s\n", buf);
+}