From babf43abf301d072192bda1f72a47440c354b072 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Fri, 4 Aug 2017 22:46:45 +0000
Subject:  Add the higher layer of libwpactrl

---
 src/libwpactrl/wpactrl_flags_scan.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 src/libwpactrl/wpactrl_flags_scan.c

(limited to 'src/libwpactrl/wpactrl_flags_scan.c')

diff --git a/src/libwpactrl/wpactrl_flags_scan.c b/src/libwpactrl/wpactrl_flags_scan.c
new file mode 100644
index 0000000..e8eecf5
--- /dev/null
+++ b/src/libwpactrl/wpactrl_flags_scan.c
@@ -0,0 +1,30 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/error.h>
+#include <skalibs/stralloc.h>
+#include <bcnm/wpactrl.h>
+
+size_t wpactrl_flags_scan (char const *t, stralloc *sa)
+{
+  size_t sabase = sa->len ;
+  int wasnull = !sa->s ;
+  char const *s = t ;
+  while (*s == '[')
+  {
+    size_t pos ;
+    pos = str_chr(s, ']') ;
+    if (!s[pos]) goto eproto ;
+    if (!stralloc_catb(sa, s, pos) || !stralloc_0(sa)) goto err ;
+    s += pos + 1 ;
+  }
+  return s - t ;
+
+ eproto:
+  errno = EPROTO ;
+ err:
+  if (wasnull) stralloc_free(sa) ;
+  else sa->len = sabase ;
+  return 0 ;
+}
-- 
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