Add sig_scan, sig0_scan

1 files changed, 34 insertions, 0 deletions

diff --git a/src/libstddjb/sig_scan.c b/src/libstddjb/sig_scan.c
new file mode 100644
index 0000000..f037d8c
--- /dev/null
+++ b/src/libstddjb/sig_scan.c
@@ -0,0 +1,34 @@
+/* ISC license. */
+
+#include <string.h>
+#include <strings.h>
+#include <skalibs/types.h>
+#include <skalibs/sig.h>
+
+static size_t sig_scan_norec (char const *s, int *sig)
+{
+  int r = sig_number(s) ;
+  if (r)
+  {
+    *sig = r ;
+    return strlen(s) ;
+  }
+  {
+    unsigned int u ;
+    size_t len = uint_scan(s, &u) ;
+    if (len) *sig = u ;
+    return len ;
+  }
+}
+
+size_t sig_scan (char const *s, int *sig)
+{
+  size_t len = sig_scan_norec(s, sig) ;
+  if (len) return len ;
+  if (!strncasecmp(s, "SIG", 3))
+  {
+    len = sig_scan_norec(s+3, sig) ;
+    if (len) return 3+len ;
+  }
+  return 0 ;
+}