+/*
+ * Returns the equivalent letter of the log level `level`.
+ *
+ * `level` must be a valid log level.
+ */
+static inline
+char bt_log_get_letter_from_level(int level)
+{
+ char letter;
+
+ switch (level) {
+ case BT_LOG_TRACE:
+ letter = 'T';
+ break;
+ case BT_LOG_DEBUG:
+ letter = 'D';
+ break;
+ case BT_LOG_INFO:
+ letter = 'I';
+ break;
+ case BT_LOG_WARNING:
+ letter = 'W';
+ break;
+ case BT_LOG_ERROR:
+ letter = 'E';
+ break;
+ case BT_LOG_FATAL:
+ letter = 'F';
+ break;
+ case BT_LOG_NONE:
+ letter = 'N';
+ break;
+ default:
+ abort();
+ }
+
+ return letter;
+}
+
+/*
+ * Returns the log level for the string `str`, or -1 if `str` is not a
+ * valid log level string.
+ */
+static inline
+int bt_log_get_level_from_string(const char *str)
+{
+ int level = -1;
+
+ BT_ASSERT(str);
+
+ if (strcmp(str, "TRACE") == 0 ||
+ strcmp(str, "T") == 0) {
+ level = BT_LOG_TRACE;
+ } else if (strcmp(str, "DEBUG") == 0 ||
+ strcmp(str, "D") == 0) {
+ level = BT_LOG_DEBUG;
+ } else if (strcmp(str, "INFO") == 0 ||
+ strcmp(str, "I") == 0) {
+ level = BT_LOG_INFO;
+ } else if (strcmp(str, "WARN") == 0 ||
+ strcmp(str, "WARNING") == 0 ||
+ strcmp(str, "W") == 0) {
+ level = BT_LOG_WARNING;
+ } else if (strcmp(str, "ERROR") == 0 ||
+ strcmp(str, "E") == 0) {
+ level = BT_LOG_ERROR;
+ } else if (strcmp(str, "FATAL") == 0 ||
+ strcmp(str, "F") == 0) {
+ level = BT_LOG_FATAL;
+ } else if (strcmp(str, "NONE") == 0 ||
+ strcmp(str, "N") == 0) {
+ level = BT_LOG_NONE;
+ } else {
+ /* FIXME: Should we warn here? How? */
+ }
+
+ return level;
+}
+
+/*
+ * Returns the log level for the letter `letter`, or -1 if `letter` is
+ * not a valid log level string.
+ */
+static inline
+int bt_log_get_level_from_letter(char letter)
+{
+ char str[] = {letter, '\0'};
+
+ return bt_log_get_level_from_string(str);
+}
+