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Avoid unnecessary allocations in StompDecoder#unescape 

Closes gh-29443
This commit is contained in:
Christoph Dreis 2022-11-07 20:47:02 +01:00 committed by Sam Brannen
parent f4b3333fa8
commit 55b258f2de
1 changed files with 5 additions and 2 deletions
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7
spring-messaging/src/main/java/org/springframework/messaging/simp/stomp/StompDecoder.java
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@ -1,5 +1,5 @@
/* /*
* Copyright 2002-2020 the original author or authors. * Copyright 2002-2022 the original author or authors.
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -264,9 +264,12 @@ public class StompDecoder {
* <a href="https://stomp.github.io/stomp-specification-1.2.html#Value_Encoding">"Value Encoding"</a>. * <a href="https://stomp.github.io/stomp-specification-1.2.html#Value_Encoding">"Value Encoding"</a>.
*/ */
private String unescape(String inString) { private String unescape(String inString) {
int index = inString.indexOf('\\');
if (index == -1) {
return inString;
}
StringBuilder sb = new StringBuilder(inString.length()); StringBuilder sb = new StringBuilder(inString.length());
int pos = 0; // position in the old string int pos = 0; // position in the old string
int index = inString.indexOf('\\');
while (index >= 0) { while (index >= 0) {
sb.append(inString, pos, index); sb.append(inString, pos, index);