1 files changed, 40 insertions, 0 deletions
diff --git a/src/libs6/ftrigr_check.c b/src/libs6/ftrigr_check.c
new file mode 100644
index 0000000..147deca
--- /dev/null
+++ b/src/libs6/ftrigr_check.c
@@ -0,0 +1,40 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/uint16.h>
+#include <skalibs/gensetdyn.h>
+#include <s6/ftrigr.h>
+
+int ftrigr_check (ftrigr_t *a, uint16 id, char *c)
+{
+  ftrigr1_t *p ;
+  if (!id--) return (errno = EINVAL, -1) ;
+  p = GENSETDYN_P(ftrigr1_t, &a->data, id) ;
+  if (!p) return (errno = EINVAL, -1) ;
+  switch (p->state)
+  {
+    case FR1STATE_WAITACKDATA :
+    {
+      *c = p->what ;
+      *p = ftrigr1_zero ;
+      gensetdyn_delete(&a->data, id) ;
+      return 1 ;
+    }
+    case FR1STATE_LISTENING :
+    {
+      register unsigned int r = p->count ;
+      if (r) *c = p->what ;
+      p->count = 0 ;
+      return (int)r ;
+    }
+    case FR1STATE_WAITACK :
+    {
+      errno = p->what ;
+      *p = ftrigr1_zero ;
+      gensetdyn_delete(&a->data, id) ;
+      return -1 ;
+    }
+    default: return (errno = EINVAL, -1) ;
+  }
+  return 0 ;
+}