1 files changed, 40 insertions, 0 deletions
diff --git a/src/skaembutils/s6-uniquename.c b/src/skaembutils/s6-uniquename.c
new file mode 100644
index 0000000..06418e5
--- /dev/null
+++ b/src/skaembutils/s6-uniquename.c
@@ -0,0 +1,40 @@
+/* ISC license. */
+
+#include <skalibs/allreadwrite.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/uint.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/skamisc.h>
+#include <skalibs/random.h>
+
+#define USAGE "s6-uniquename [ -n randomlen ] prefix"
+#define usage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv)
+{
+  stralloc sa = STRALLOC_ZERO ;
+  unsigned int n = 8 ;
+  PROG = "s6-uniquename" ;
+  {
+    subgetopt_t l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      register int opt = subgetopt_r(argc, argv, "n:", &l) ;
+      if (opt == -1) break ;
+      switch (opt)
+      {
+        case 'n' : if (!uint0_scan(l.arg, &n)) usage() ; break ;
+        default : usage() ;
+      }
+    }
+    argc -= l.ind ; argv += l.ind ;
+  }
+  if (argc < 1) usage() ;
+  if (!stralloc_cats(&sa, argv[0])) strerr_diefu1sys(111, "stralloc_cats") ;
+  if ((n ? random_sauniquename(&sa, n) : sauniquename(&sa)) < 0)
+    strerr_diefu1sys(111, "make unique name") ;
+  if (!stralloc_catb(&sa, "\n", 1)) strerr_diefu1sys(111, "stralloc_cats") ;
+  if (allwrite(1, sa.s, sa.len) < sa.len) strerr_diefu1sys(111, "write to stdout") ;
+  return 0 ;
+}