Initial import of the CDE 2.1.30 sources from the Open Group.

cde/lib/tt/bin/dbck/binkey.C

@@ -0,0 +1,110 @@
+//%%  (c) Copyright 1993, 1994 Hewlett-Packard Company			
+//%%  (c) Copyright 1993, 1994 International Business Machines Corp.	
+//%%  (c) Copyright 1993, 1994 Sun Microsystems, Inc.			
+//%%  (c) Copyright 1993, 1994 Novell, Inc. 				
+//%%  $XConsortium: binkey.C /main/3 1995/10/20 16:24:54 rswiston $ 			 				
+/*
+ *
+ * binkey.cc
+ *
+ * Copyright (c) 1991 by Sun Microsystems, Inc.
+ */
+
+#include "util/tt_string.h"
+#include "db/tt_db_key_utils.h"
+#include "binkey.h"
+#include <memory.h>
+
+static unsigned char sixteen_zeroes[OID_KEY_LENGTH] = {
+	0,0,0,0,
+	0,0,0,0,
+	0,0,0,0,
+	0,0,0,0};
+static unsigned char sixteen_foxes[OID_KEY_LENGTH] = {
+	255,255,255,255,
+	255,255,255,255,
+	255,255,255,255,
+	255,255,255,255};
+
+Binkey Binkey::smallest(sixteen_zeroes);
+Binkey Binkey::largest(sixteen_foxes);
+
+static int binkey_compare(const unsigned char *a, const unsigned char *b);
+
+Binkey::
+Binkey()
+{
+	memset((char *)_binkey, 0, sizeof(_binkey));
+	_key = (_Tt_db_key *)0;
+}
+
+Binkey::
+Binkey(const unsigned char *k)
+{
+	_Tt_string bks(k, sizeof(_binkey));
+	memcpy((char *)_binkey, k, sizeof(_binkey));
+	_key = new _Tt_db_key(bks);
+}
+
+Binkey & Binkey::
+operator=(const Binkey &k)
+{
+	memcpy((char *)_binkey, (char *)k._binkey, sizeof(_binkey));
+	_key = new _Tt_db_key(k);
+	return *this;
+}
+
+Binkey & Binkey::
+operator=(const unsigned char *k)
+{
+	_Tt_string bks(k, sizeof(_binkey));
+	memcpy((char *)_binkey, k, sizeof(_binkey));
+	_key = new _Tt_db_key(bks);
+	return *this;
+}
+
+int
+operator==(const Binkey &a, const _Tt_db_key &b)
+{
+	return b==*a._key;
+}	
+
+int
+operator==(const Binkey &a, const Binkey &b)
+{
+	return binkey_compare(a._binkey,b._binkey)==0;
+}
+int
+operator<(const Binkey &a, const Binkey &b)
+{
+	return binkey_compare(a._binkey,b._binkey)<0;
+}
+int
+operator>(const Binkey &a, const Binkey &b)
+{
+	return binkey_compare(a._binkey,b._binkey)>0;
+}
+
+static int
+binkey_compare(const unsigned char *pa, const unsigned char *pb)
+{
+	// No libc routines seem to guarantee to handle unsigned chars!
+	int i = OID_KEY_LENGTH;
+	while (i--) {
+		if (*pa>*pb) return 1;
+		if (*pa++<*pb++) return -1;
+	}
+	return 0;
+}
+
+void Binkey::
+print(FILE* f) const
+{
+	if (_key.is_null()) {
+		fprintf(f,"(null key)");
+	} else {
+		_key->print(f);
+	}
+}
+
+