1 files changed, 21 insertions, 0 deletions
diff --git a/src/librandom/random_sauniquename_from.c b/src/librandom/random_sauniquename_from.c
new file mode 100644
index 0000000..132d303
--- /dev/null
+++ b/src/librandom/random_sauniquename_from.c
@@ -0,0 +1,21 @@
+/* ISC license. */
+
+#include <skalibs/stralloc.h>
+#include <skalibs/skamisc.h>
+#include <skalibs/random.h>
+
+int random_sauniquename_from (stralloc *sa, size_t n, randomgen_func_ref f)
+{
+  size_t base = sa->len ;
+  int wasnull = !sa->s ;
+  if (!sauniquename(sa)) return 0 ;
+  if (!stralloc_readyplus(sa, n+1)) goto err ;
+  stralloc_catb(sa, ":", 1) ;
+  random_name_from(sa->s + sa->len, n, f) ;
+  sa->len += n ;
+  return 1 ;
+
+err:
+  if (wasnull) stralloc_free(sa) ; else sa->len = base ;
+  return 0 ;
+}