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Ensure StringDecoder supports multiline delimiters

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This commit makes sure the StringDecoder supports stripping off
multi-line delimiters, such as \r\n. Specifically, we ensure that the
delimiter is stripped from the joined buffer.

Closes gh-26511
This commit is contained in:
Arjen Poutsma
2021-02-08 15:40:47 +01:00
parent 6c22f7ef5e
commit c09b2513e0
2 changed files with 25 additions and 6 deletions
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12
spring-core/src/main/java/org/springframework/core/codec/StringDecoder.java
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@@ -157,16 +157,20 @@ public final class StringDecoder extends AbstractDataBufferDecoder<String> {
int startIndex = buffer.readPosition();
int length = (endIndex - startIndex + 1);
DataBuffer slice = buffer.retainedSlice(startIndex, length);
if (this.stripDelimiter) {
slice.writePosition(slice.writePosition() - matcher.delimiter().length);
}
result = (result != null ? result : new ArrayList<>());
if (chunks.isEmpty()) {
if (this.stripDelimiter) {
slice.writePosition(slice.writePosition() - matcher.delimiter().length);
}
result.add(slice);
}
else {
chunks.add(slice);
result.add(buffer.factory().join(chunks));
DataBuffer joined = buffer.factory().join(chunks);
if (this.stripDelimiter) {
joined.writePosition(joined.writePosition() - matcher.delimiter().length);
}
result.add(joined);
chunks.clear();
}
buffer.readPosition(endIndex + 1);