Added `format_len()`.

2 files changed, 10 insertions, 0 deletions

diff --git a/misc.c b/misc.c
index dd00480..bd24b30 100644
--- a/misc.c
+++ b/misc.c
@@ -125,3 +125,12 @@ char *sanitize_str(char *str) {
 	}
 	return san_str;
 }
+
+int format_len(const char *fmt, ...) {
+	int len = 0;
+	va_list args;
+	va_start(args, fmt);
+	len = vsnprintf(NULL, 0, fmt, args);
+	va_end(args);
+	return len;
+}
diff --git a/misc.h b/misc.h
index 74ed3f9..d9829a5 100644
--- a/misc.h
+++ b/misc.h
@@ -9,4 +9,5 @@ extern char *dir_path_name(const char *root, char *name);
 extern int delm_span(char *str, const char delm);
 extern int sanitize_strlen(char *str);
 extern char *sanitize_str(char *str);
+extern int format_len(const char *fmt, ...);
 #endif