Use static array for log level strings

src/logging.c

@@ -7,6 +7,7 @@
 #include <syslog.h>
 #include <sys/queue.h>
 #include "ucore/logging.h"
+#include "ucore/utils.h"
 
 
 struct uc_log_destination {
@@ -59,23 +60,39 @@ static const struct uc_log_module g_unknown_module = {
 //this list an anything contained within it.
 static SLIST_HEAD(, uc_log_destination) g_destinations;
 static int uc_log_reopen_file(struct uc_log_destination *dest);
+//Uses enum UC_LOG_LEVEL as index
+static const char *const g_debug_levels[] = {
+    "NONE",
+    "DEBUG",
+    "UNKNOWN_2",
+    "INFO",
+    "UNKNOWN_4"
+    "WARNING",
+    "UNKNOWN_6",
+    "ERROR"
+};
 
 inline const char *uc_ll_2_str(enum UC_LOG_LEVEL l)
 {
-    switch(l) {
-        case UC_LL_NONE:
-            return "NONE";
-        case UC_LL_DEBUG:
-            return "DEBUG";
-        case UC_LL_INFO:
-            return "INFO";
-        case UC_LL_WARNING:
-            return "WARNING";
-        case UC_LL_ERROR:
-            return "ERROR";
+    if (l >= 0 && l < (int)ARRAY_SIZE(g_debug_levels)) {
+        return g_debug_levels[l];
+    } else {
+        return "???";
+    }
 }
 
-    return "???";
+//returns -1 if the string is not a known log level
+static enum UC_LOG_LEVEL uc_str_2_ll(const char *str)
+{
+    size_t i;
+
+    for (i = 0; i < ARRAY_SIZE(g_debug_levels); i++) {
+        if (strcmp(str, g_debug_levels[i]) == 0) {
+            return (int)i;
+        }
+    }
+
+    return -1;
 }
 
 static inline int uc_ll_2_syslog(enum UC_LOG_LEVEL l)