Added function for shell-like pattern matching. Will be used for

matching interface names in protocol-to-iface bindings.

1 files changed, 54 insertions, 0 deletions

diff --git a/lib/patmatch.c b/lib/patmatch.c
new file mode 100644
index 0000000..15d5007
--- /dev/null
+++ b/lib/patmatch.c
@@ -0,0 +1,54 @@
+/*
+ *	BIRD Library -- Generic Shell-Like Pattern Matching (currently only '?' and '*')
+ *
+ *	(c) 1998 Martin Mares, <mj@atrey.karlin.mff.cuni.cz>
+ */
+
+#include "nest/bird.h"
+#include "lib/string.h"
+
+#ifndef MATCH_FUNC_NAME
+#define MATCH_FUNC_NAME patmatch
+#endif
+
+#ifndef Convert
+#define Convert(x) x
+#endif
+
+int
+MATCH_FUNC_NAME(byte *p, byte *s)
+{
+  while (*p)
+    {
+      if (*p == '?' && *s)
+	p++, s++;
+      else if (*p == '*')
+	{
+	  int z = p[1];
+
+	  if (!z)
+	    return 1;
+	  if (z == '\\' && p[2])
+	    z = p[2];
+	  z = Convert(z);
+	  for(;;)
+	    {
+	      while (*s && Convert(*s) != z)
+		s++;
+	      if (!*s)
+		return 0;
+	      if (MATCH_FUNC_NAME(p+1, s))
+		return 1;
+	      s++;
+	    }
+	}
+      else
+	{
+	  if (*p == '\\' && p[1])
+	    p++;
+	  if (Convert(*p++) != Convert(*s++))
+	    return 0;
+	}
+    }
+  return !*s;
+}