1 files changed, 21 insertions, 0 deletions
diff --git a/src/libstddjb/cbuffer_rpeek.c b/src/libstddjb/cbuffer_rpeek.c
new file mode 100644
index 0000000..22a1ef5
--- /dev/null
+++ b/src/libstddjb/cbuffer_rpeek.c
@@ -0,0 +1,21 @@
+/* ISC license. */
+
+#include <skalibs/cbuffer.h>
+#include <skalibs/siovec.h>
+
+void cbuffer_rpeek (cbuffer_t *b, siovec_t *v)
+{
+  v[0].s = b->x + b->p ;
+  if (b->n >= b->p)
+  {
+    v[0].len = b->n - b->p ;
+    v[1].s = 0 ;
+    v[1].len = 0 ;
+  }
+  else
+  {
+    v[0].len = b->a - b->p ;
+    v[1].s = b->x ;
+    v[1].len = b->n ;
+  }
+}