Create an API for adding an optional time unit onto the ends of time periods.

Two examples of its use are included, and the usage could be expanded in some
cases into certain configuration options where time periods are specified.


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@224225 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 56 insertions, 0 deletions

diff --git a/main/app.c b/main/app.c
index 99dcfa677..580e91b76 100644
--- a/main/app.c
+++ b/main/app.c
@@ -2082,3 +2082,59 @@ void ast_safe_fork_cleanup(void)
 	ast_unreplace_sigchld();
 }
 
+int ast_app_parse_timelen(const char *timestr, int *result, ast_timelen unit)
+{
+	int res;
+	char u[10];
+#ifdef HAVE_LONG_DOUBLE_WIDER
+	long double amount;
+	#define FMT "%30Lf%9s"
+#else
+	double amount;
+	#define FMT "%30lf%9s"
+#endif
+	if (!timestr) {
+		return -1;
+	}
+
+	if ((res = sscanf(timestr, FMT, &amount, u)) == 0) {
+#undef FMT
+		return -1;
+	} else if (res == 2) {
+		switch (u[0]) {
+		case 'h':
+		case 'H':
+			unit = TIMELEN_HOURS;
+			break;
+		case 's':
+		case 'S':
+			unit = TIMELEN_SECONDS;
+			break;
+		case 'm':
+		case 'M':
+			if (toupper(u[1]) == 'S') {
+				unit = TIMELEN_MILLISECONDS;
+			} else if (u[1] == '\0') {
+				unit = TIMELEN_MINUTES;
+			}
+			break;
+		}
+	}
+
+	switch (unit) {
+	case TIMELEN_HOURS:
+		amount *= 60;
+		/* fall-through */
+	case TIMELEN_MINUTES:
+		amount *= 60;
+		/* fall-through */
+	case TIMELEN_SECONDS:
+		amount *= 1000;
+		/* fall-through */
+	case TIMELEN_MILLISECONDS:
+		;
+	}
+	*result = amount > INT_MAX ? INT_MAX : (int) amount;
+	return 0;
+}
+