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LibWeb: Use Vector<ByteBuffer> to store chunks in ReadLoopReadRequest

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This stores the incoming chunks into a Vector of ByteBuffer in order to
be able to retrieve them in the same order as they came in.
This commit is contained in:
Kenneth Myhra 2024-04-06 12:10:42 +02:00 • committed by Andreas Kling
commit 12cfa08a09
Notes: sideshowbarker 2024-07-17 03:27:40 +09:00
2 changed files with 10 additions and 6 deletions
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12
Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.cpp
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@ -86,7 +86,7 @@ void ReadLoopReadRequest::on_chunk(JS::Value chunk)
auto const& buffer = array.viewed_array_buffer()->buffer();
// 2. Append the bytes represented by chunk to bytes.
m_bytes.append(buffer);
m_byte_chunks.append(buffer);
// FIXME: As the spec suggests, implement this non-recursively - instead of directly. It is not too big of a deal currently
// as we enqueue the entire blob buffer in one go, meaning that we only recurse a single time. Once we begin queuing
@ -104,7 +104,7 @@ void ReadLoopReadRequest::on_chunk(JS::Value chunk)
void ReadLoopReadRequest::on_close()
{
// 1. Call successSteps with bytes.
m_success_steps(m_bytes);
m_success_steps(m_byte_chunks);
}
// error steps, given e
@ -206,8 +206,12 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> ReadableStreamDefaultRead
auto promise = WebIDL::create_promise(realm);
auto success_steps = [promise, &realm](ByteBuffer bytes) {
auto buffer = JS::ArrayBuffer::create(realm, move(bytes));
auto success_steps = [promise, &realm](Vector<ByteBuffer> const& byte_chunks) {
ByteBuffer concatenated_byte_chunks;
for (auto const& chunk : byte_chunks)
concatenated_byte_chunks.append(chunk);
auto buffer = JS::ArrayBuffer::create(realm, move(concatenated_byte_chunks));
WebIDL::resolve_promise(realm, promise, buffer);
};

4
Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.h
View file

@ -36,7 +36,7 @@ class ReadLoopReadRequest final : public ReadRequest {
public:
// successSteps, which is an algorithm accepting a byte sequence
using SuccessSteps = JS::SafeFunction<void(ByteBuffer)>;
using SuccessSteps = JS::SafeFunction<void(Vector<ByteBuffer> const&)>;
// failureSteps, which is an algorithm accepting a JavaScript value
using FailureSteps = JS::SafeFunction<void(JS::Value error)>;
@ -55,7 +55,7 @@ private:
JS::VM& m_vm;
JS::NonnullGCPtr<JS::Realm> m_realm;
JS::NonnullGCPtr<ReadableStreamDefaultReader> m_reader;
ByteBuffer m_bytes;
Vector<ByteBuffer> m_byte_chunks;
SuccessSteps m_success_steps;
FailureSteps m_failure_steps;
};