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

cde/lib/tt/mini_isam/isbytearray.c

@@ -0,0 +1,103 @@
+/*%%  (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: isbytearray.c /main/3 1995/10/23 11:36:32 rswiston $ 			 				 */
+#ifndef lint
+static char sccsid[] = "@(#)isbytearray.c 1.3 89/07/17 Copyr 1988 Sun Micro";
+#endif
+/*
+ * Copyright (c) 1988 by Sun Microsystems, Inc.
+ */
+
+/*
+ * isbytearray.c
+ *
+ * Description:
+ *	Byte array handling functions.
+ *
+ */
+
+#include "isam_impl.h"
+
+
+/*
+ * _bytearr_getempty()
+ *
+ * Return an empty byte array.
+ */
+
+Bytearray 
+_bytearr_getempty()
+{
+    static Bytearray	empty_bytearray = { 0, NULL};
+
+    return (empty_bytearray);
+}
+
+/*
+ * bytearray = _bytearr_new(len, data)
+ *
+ * Create a byte array object.
+ */
+
+Bytearray
+_bytearr_new(len, data)
+    u_short		len;
+    char		*data;
+{
+    Bytearray		bytearray;
+
+    bytearray.length = len;
+    bytearray.data = _ismalloc(len);
+    memcpy( bytearray.data,data, (int)len);
+    
+    return (bytearray);
+}
+
+/*
+ * new = _bytearr_dup(old)
+ *
+ * Duplicate a byte array object.
+ */
+
+Bytearray
+_bytearr_dup(old)
+    Bytearray		*old;
+{
+    return (_bytearr_new(old->length, old->data));
+}
+
+/*
+ * _bytearr_free(barrray)
+ *
+ * Free byte array buffer, set barray to an empty byte array.
+ */
+
+void
+_bytearr_free(barray)
+    register Bytearray	*barray;
+{
+    if (barray->data)
+	free(barray->data);
+
+    *barray = _bytearr_getempty();
+}
+
+/*
+ * _bytearr_cmp(l, r)
+ *
+ * Compare two byte array objects. Return 0 if they are equal, non-zero if
+ * they differ.
+ */
+
+int
+_bytearr_cmp(l,r)
+    register Bytearray	*l, *r;
+{
+    if (l->length == r->length)
+	return (memcmp(l->data, r->data, (int)l->length));
+    else
+	return (1);			     /* not equal */
+}
+