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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/encoding/TextDecoder.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/encoding/TextDecoder.h')
-rw-r--r--dom/encoding/TextDecoder.h124
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diff --git a/dom/encoding/TextDecoder.h b/dom/encoding/TextDecoder.h
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+/* -*- 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/. */
+
+#ifndef mozilla_dom_textdecoder_h_
+#define mozilla_dom_textdecoder_h_
+
+#include "mozilla/dom/NonRefcountedDOMObject.h"
+#include "mozilla/dom/TextDecoderBinding.h"
+#include "mozilla/dom/TypedArray.h"
+#include "nsAutoPtr.h"
+#include "nsIUnicodeDecoder.h"
+
+namespace mozilla {
+
+class ErrorResult;
+
+namespace dom {
+
+class ArrayBufferViewOrArrayBuffer;
+
+class TextDecoder final
+ : public NonRefcountedDOMObject
+{
+public:
+ // The WebIDL constructor.
+ static TextDecoder*
+ Constructor(const GlobalObject& aGlobal,
+ const nsAString& aEncoding,
+ const TextDecoderOptions& aOptions,
+ ErrorResult& aRv)
+ {
+ nsAutoPtr<TextDecoder> txtDecoder(new TextDecoder());
+ txtDecoder->Init(aEncoding, aOptions.mFatal, aRv);
+ if (aRv.Failed()) {
+ return nullptr;
+ }
+ return txtDecoder.forget();
+ }
+
+ TextDecoder()
+ : mFatal(false)
+ {
+ MOZ_COUNT_CTOR(TextDecoder);
+ }
+
+ ~TextDecoder()
+ {
+ MOZ_COUNT_DTOR(TextDecoder);
+ }
+
+ bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
+ {
+ return TextDecoderBinding::Wrap(aCx, this, aGivenProto, aReflector);
+ }
+
+ /**
+ * Validates provided label and throws an exception if invalid label.
+ *
+ * @param aLabel The encoding label (case insensitive) provided.
+ * @param aFatal indicates whether to throw an 'EncodingError'
+ * exception or not when decoding.
+ * @return aRv EncodingError exception else null.
+ */
+ void Init(const nsAString& aLabel, const bool aFatal, ErrorResult& aRv);
+
+ /**
+ * Performs initialization with a Gecko-canonical encoding name (as opposed
+ * to a label.)
+ *
+ * @param aEncoding A Gecko-canonical encoding name
+ * @param aFatal indicates whether to throw an 'EncodingError'
+ * exception or not when decoding.
+ */
+ void InitWithEncoding(const nsACString& aEncoding, const bool aFatal);
+
+ /**
+ * Return the encoding name.
+ *
+ * @param aEncoding, current encoding.
+ */
+ void GetEncoding(nsAString& aEncoding);
+
+ /**
+ * Decodes incoming byte stream of characters in charset indicated by
+ * encoding.
+ *
+ * The encoding algorithm state is reset if aOptions.mStream is not set.
+ *
+ * If the fatal flag is set then a decoding error will throw EncodingError.
+ * Else the decoder will return a decoded string with replacement
+ * character(s) for unidentified character(s).
+ *
+ * @param aView, incoming byte stream of characters to be decoded to
+ * to UTF-16 code points.
+ * @param aOptions, indicates if streaming or not.
+ * @param aOutDecodedString, decoded string of UTF-16 code points.
+ * @param aRv, error result.
+ */
+ void Decode(const char* aInput, const int32_t aLength,
+ const bool aStream, nsAString& aOutDecodedString,
+ ErrorResult& aRv);
+
+ void Decode(const Optional<ArrayBufferViewOrArrayBuffer>& aBuffer,
+ const TextDecodeOptions& aOptions,
+ nsAString& aOutDecodedString,
+ ErrorResult& aRv);
+
+ bool Fatal() const {
+ return mFatal;
+ }
+
+private:
+ nsCString mEncoding;
+ nsCOMPtr<nsIUnicodeDecoder> mDecoder;
+ bool mFatal;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_textdecoder_h_