36 lines
1.5 KiB
C++
36 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibJS/Runtime/TypedArray.h>
|
|
#include <LibWeb/Bindings/Wrapper.h>
|
|
#include <LibWeb/Encoding/TextEncoder.h>
|
|
|
|
namespace Web::Encoding {
|
|
|
|
// https://encoding.spec.whatwg.org/#dom-textencoder-encode
|
|
JS::Uint8Array* TextEncoder::encode(String const& input) const
|
|
{
|
|
auto& global_object = wrapper()->global_object();
|
|
|
|
// NOTE: The AK::String returned from PrimitiveString::string() is always UTF-8, regardless of the internal string type, so most of these steps are no-ops.
|
|
|
|
// 1. Convert input to an I/O queue of scalar values.
|
|
// 2. Let output be the I/O queue of bytes « end-of-queue ».
|
|
// 3. While true:
|
|
// 1. Let item be the result of reading from input.
|
|
// 2. Let result be the result of processing an item with item, an instance of the UTF-8 encoder, input, output, and "fatal".
|
|
// 3. Assert: result is not an error.
|
|
// 4. If result is finished, then convert output into a byte sequence and return a Uint8Array object wrapping an ArrayBuffer containing output.
|
|
|
|
auto byte_buffer = input.to_byte_buffer();
|
|
|
|
// FIXME: Support `TypedArray::create()` with existing `ArrayBuffer`, so that we don't have to allocate two `ByteBuffer`s.
|
|
auto* typed_array = JS::Uint8Array::create(global_object, byte_buffer.size());
|
|
typed_array->viewed_array_buffer()->buffer() = move(byte_buffer);
|
|
return typed_array;
|
|
}
|
|
|
|
}
|