1 /*
 2  * Copyright (c) 2026, 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 
24 package compiler.ciReplay;
25 
26 import jdk.test.lib.Asserts;
27 
28 import java.io.IOException;
29 import java.nio.file.Files;
30 import java.nio.file.Path;
31 import java.nio.file.Paths;
32 import java.nio.file.StandardOpenOption;
33 import java.util.ArrayList;
34 import java.util.List;
35 
36 public class ReplayFile {
37     private final Path replayFilePath;
38     private final List<String> replayFile;
39 
40     public ReplayFile(String replayFileName) {
41         try {
42             this.replayFilePath = Paths.get(replayFileName);
43             this.replayFile = Files.readAllLines(replayFilePath);
44         } catch (IOException ioe) {
45             throw new Error("Failed to read/write replay data: " + ioe, ioe);
46         }
47     }
48 
49     public void removeLineStartingWith(String oldLine) {
50         replaceLineStartingWith(oldLine, "");
51     }
52 
53     public String findLineStartingWith(String toFind) {
54         return replayFile.stream()
55                 .filter(line -> line.startsWith(toFind))
56                 .findFirst()
57                 .orElse("");
58     }
59 
60     public void replaceLineStartingWith(String oldLine, String newLine) {
61         boolean foundOldLine = false;
62         List<String> newReplayFile = new ArrayList<>();
63         for (String line : replayFile) {
64             if (line.startsWith(oldLine)) {
65                 foundOldLine = true;
66                 if (!newLine.isEmpty()) {
67                     // Only add if non-empty. Otherwise, line removal.
68                     newReplayFile.add(newLine);
69                 }
70             } else {
71                 newReplayFile.add(line);
72             }
73         }
74         Asserts.assertTrue(foundOldLine, "Did not find oldLine \"" + oldLine + "\" in " + replayFilePath);
75         try {
76             Files.write(replayFilePath, newReplayFile, StandardOpenOption.TRUNCATE_EXISTING);
77         } catch (IOException ioe) {
78             throw new Error("Failed to read/write replay data: " + ioe, ioe);
79         }
80     }
81 }