1 files changed, 21 insertions, 0 deletions
diff --git a/src/launcherutil.c b/src/launcherutil.c
index b292df9..070290d 100644
--- a/src/launcherutil.c
+++ b/src/launcherutil.c
@@ -66,6 +66,27 @@ char *l2_launcher_sprintf_alloc(const char *fmt, ...)
   return ret;
 }
 
+char *l2_launcher_sprintf_resize(char **buf, size_t *len, const char *fmt, ...)
+{
+  va_list pva;
+
+  va_start(pva, fmt);
+  size_t needlen = vsnprintf(NULL, 0, fmt, pva);
+  va_end(pva);
+
+  if (needlen + 1 > *len) {
+    char *temp = realloc(*buf, needlen + 1);
+    if (!temp) return NULL;
+    *buf = temp;
+    *len = needlen + 1;
+  }
+
+  va_start(pva, fmt);
+  vsnprintf(*buf, *len, fmt, pva);
+  va_end(pva);
+  return *buf;
+}
+
 char *l2_launcher_find_config_path(void)
 {
   /* check for $L2SU_CONFIG */