mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
33c40a5a72
--HG-- rename : dom/encoding/TextDecoder.h => dom/encoding/TextDecoderBase.h rename : dom/encoding/TextEncoder.h => dom/encoding/TextEncoderBase.h
132 lines
3.7 KiB
C++
132 lines
3.7 KiB
C++
/* 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/TextDecoder.h"
|
|
#include "mozilla/dom/EncodingUtils.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsICharsetConverterManager.h"
|
|
#include "nsServiceManagerUtils.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
static const PRUnichar kReplacementChar = static_cast<PRUnichar>(0xFFFD);
|
|
|
|
void
|
|
TextDecoderBase::Init(const nsAString& aEncoding, const bool aFatal,
|
|
ErrorResult& aRv)
|
|
{
|
|
nsAutoString label(aEncoding);
|
|
EncodingUtils::TrimSpaceCharacters(label);
|
|
|
|
// Let encoding be the result of getting an encoding from label.
|
|
// If encoding is failure, throw a TypeError.
|
|
if (!EncodingUtils::FindEncodingForLabel(label, mEncoding)) {
|
|
aRv.ThrowTypeError(MSG_ENCODING_NOT_SUPPORTED, &label);
|
|
return;
|
|
}
|
|
|
|
// If the constructor is called with an options argument,
|
|
// and the fatal property of the dictionary is set,
|
|
// set the internal fatal flag of the decoder object.
|
|
mFatal = aFatal;
|
|
|
|
// Create a decoder object for mEncoding.
|
|
nsCOMPtr<nsICharsetConverterManager> ccm =
|
|
do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID);
|
|
if (!ccm) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
|
|
ccm->GetUnicodeDecoderRaw(mEncoding.get(), getter_AddRefs(mDecoder));
|
|
if (!mDecoder) {
|
|
aRv.Throw(NS_ERROR_UNEXPECTED);
|
|
return;
|
|
}
|
|
|
|
if (mFatal) {
|
|
mDecoder->SetInputErrorBehavior(nsIUnicodeDecoder::kOnError_Signal);
|
|
}
|
|
}
|
|
|
|
void
|
|
TextDecoderBase::Decode(const ArrayBufferView* aView,
|
|
const bool aStream,
|
|
nsAString& aOutDecodedString,
|
|
ErrorResult& aRv)
|
|
{
|
|
const char* data;
|
|
int32_t length;
|
|
// If view is not specified, let view be a Uint8Array of length 0.
|
|
if (!aView) {
|
|
data = EmptyCString().BeginReading();
|
|
length = EmptyCString().Length();
|
|
} else {
|
|
data = reinterpret_cast<const char*>(aView->Data());
|
|
length = aView->Length();
|
|
}
|
|
|
|
aOutDecodedString.Truncate();
|
|
|
|
// Run or resume the decoder algorithm of the decoder object's encoder.
|
|
int32_t outLen;
|
|
nsresult rv = mDecoder->GetMaxLength(data, length, &outLen);
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(rv);
|
|
return;
|
|
}
|
|
// Need a fallible allocator because the caller may be a content
|
|
// and the content can specify the length of the string.
|
|
static const fallible_t fallible = fallible_t();
|
|
nsAutoArrayPtr<PRUnichar> buf(new (fallible) PRUnichar[outLen + 1]);
|
|
if (!buf) {
|
|
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
|
|
return;
|
|
}
|
|
|
|
rv = mDecoder->Convert(data, &length, buf, &outLen);
|
|
MOZ_ASSERT(mFatal || rv != NS_ERROR_ILLEGAL_INPUT);
|
|
buf[outLen] = 0;
|
|
aOutDecodedString.Append(buf, outLen);
|
|
|
|
// If the internal streaming flag of the decoder object is not set,
|
|
// then reset the encoding algorithm state to the default values
|
|
if (!aStream) {
|
|
mDecoder->Reset();
|
|
if (rv == NS_OK_UDEC_MOREINPUT) {
|
|
if (mFatal) {
|
|
aRv.Throw(NS_ERROR_DOM_ENCODING_DECODE_ERR);
|
|
} else {
|
|
// Need to emit a decode error manually
|
|
// to simulate the EOF handling of the Encoding spec.
|
|
aOutDecodedString.Append(kReplacementChar);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (NS_FAILED(rv)) {
|
|
aRv.Throw(NS_ERROR_DOM_ENCODING_DECODE_ERR);
|
|
}
|
|
}
|
|
|
|
void
|
|
TextDecoderBase::GetEncoding(nsAString& aEncoding)
|
|
{
|
|
CopyASCIItoUTF16(mEncoding, aEncoding);
|
|
nsContentUtils::ASCIIToLower(aEncoding);
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTING_ADDREF(TextDecoder)
|
|
NS_IMPL_CYCLE_COLLECTING_RELEASE(TextDecoder)
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TextDecoder)
|
|
NS_INTERFACE_MAP_ENTRY(nsISupports)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_1(TextDecoder, mGlobal)
|
|
|
|
} // dom
|
|
} // mozilla
|