1 files changed, 11 insertions, 7 deletions
diff --git a/libass/ass_utils.c b/libass/ass_utils.c
index 40e6533..06ae8c7 100644
--- a/libass/ass_utils.c
+++ b/libass/ass_utils.c
@@ -331,22 +331,26 @@ void ass_msg(ASS_Library *priv, int lvl, char *fmt, ...)
     va_end(va);
 }
 
-char *trim_space(char *str)
+/**
+ * Return a string with spaces trimmed at start and end.
+ * \param str input string
+ * \return output string, can be released with free()
+ */
+char *strdup_trimmed(const char *str)
 {
-    int i;
     int left = 0;
     int right = strlen(str) - 1;
+    char *out = NULL;
 
     while (isspace(str[left])) left++;
     while (right > left && isspace(str[right])) right--;
 
-    if (left > 0)
-        for (i = 0; i <= right - left; i++)
-            str[i] = str[left+i];
+    out = calloc(1, right-left+2);
 
-    str[right-left+1] = '\0';
+    if (out)
+        memcpy(out, str + left, right-left+1);
 
-    return str;
+    return out;
 }
 
 unsigned ass_utf8_get_char(char **str)