1 /*
 2  * Copyright (c) 1996, 2020, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 package org.openjdk.asmtools.jdis;
24 
25 import org.openjdk.asmtools.jasm.Tables;
26 
27 import java.io.DataInputStream;
28 import java.io.IOException;
29 
30 import static java.lang.String.format;
31 
32 /**
33  *
34  */
35 public class AttrData {
36 
37     int name_cpx;
38     byte data[];
39     ClassData cls;
40     public AttrData(ClassData cls) {
41         this.cls = cls;
42     }
43 
44     /**
45      * attributeTag
46      * <p>
47      * returns either -1 (not found), or the hashed integer tag tag.
48      */
49     public static int attributeTag(String tagname) {
50         int intgr = Tables.attrtagValue(tagname);
51 
52         if (intgr == 0) {
53             return -1;
54         }
55 
56         return intgr;
57     }
58 
59     public void read(int name_cpx, int attrlen, DataInputStream in) throws IOException {
60         this.name_cpx = name_cpx;
61         data = new byte[attrlen];
62         TraceUtils.traceln(format("AttrData:#%d len=%d", name_cpx, attrlen));
63         in.readFully(data);
64     }
65 }