55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "mozilla/dom/TextEncoder.h"
|
|
#include "mozilla/CheckedInt.h"
|
|
#include "mozilla/ErrorResult.h"
|
|
#include "mozilla/UniquePtrExtensions.h"
|
|
#include "nsReadableUtils.h"
|
|
|
|
namespace mozilla::dom {
|
|
|
|
void TextEncoder::Encode(JSContext* aCx, JS::Handle<JSObject*> aObj,
|
|
const nsACString& aUtf8String,
|
|
JS::MutableHandle<JSObject*> aRetval,
|
|
ErrorResult& aRv) {
|
|
JSAutoRealm ar(aCx, aObj);
|
|
JSObject* outView = Uint8Array::Create(aCx, aUtf8String, aRv);
|
|
if (aRv.Failed()) {
|
|
return;
|
|
}
|
|
|
|
aRetval.set(outView);
|
|
}
|
|
|
|
void TextEncoder::EncodeInto(JSContext* aCx, JS::Handle<JSString*> aSrc,
|
|
const Uint8Array& aDst,
|
|
TextEncoderEncodeIntoResult& aResult,
|
|
OOMReporter& aError) {
|
|
DebugOnly<size_t> dstLength = 0;
|
|
auto maybe = aDst.ProcessData(
|
|
[&](const Span<uint8_t>& aData, JS::AutoCheckCannotGC&&) {
|
|
dstLength = aData.Length();
|
|
return JS_EncodeStringToUTF8BufferPartial(aCx, aSrc,
|
|
AsWritableChars(aData));
|
|
});
|
|
if (!maybe) {
|
|
aError.ReportOOM();
|
|
return;
|
|
}
|
|
size_t read;
|
|
size_t written;
|
|
std::tie(read, written) = *maybe;
|
|
MOZ_ASSERT(written <= dstLength);
|
|
aResult.mRead.Construct() = read;
|
|
aResult.mWritten.Construct() = written;
|
|
}
|
|
|
|
void TextEncoder::GetEncoding(nsACString& aEncoding) {
|
|
aEncoding.AssignLiteral("utf-8");
|
|
}
|
|
|
|
} // namespace mozilla::dom
|