73 lines
2.4 KiB
C++
73 lines
2.4 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "TextEncoder.h"
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#include <JavaScriptCore/GenericTypedArrayViewInlines.h>
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#include <JavaScriptCore/JSCInlines.h>
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#include <JavaScriptCore/JSGenericTypedArrayViewInlines.h>
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namespace WebCore {
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String TextEncoder::encoding() const
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{
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return "utf-8"_s;
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}
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RefPtr<Uint8Array> TextEncoder::encode(String&& input) const
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{
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// FIXME: We should not need to allocate a CString to encode into a Uint8Array.
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CString utf8 = input.utf8();
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return Uint8Array::tryCreate(utf8.dataAsUInt8Ptr(), utf8.length());
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}
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auto TextEncoder::encodeInto(String&& input, Ref<Uint8Array>&& array) -> EncodeIntoResult
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{
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auto* destinationBytes = static_cast<uint8_t*>(array->baseAddress());
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auto capacity = array->byteLength();
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uint64_t read = 0;
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uint64_t written = 0;
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for (auto token : StringView(input).codePoints()) {
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if (written >= capacity) {
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ASSERT(written == capacity);
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break;
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}
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UBool sawError = false;
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U8_APPEND(destinationBytes, written, capacity, token, sawError);
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if (sawError)
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break;
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if (U_IS_BMP(token))
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read++;
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else
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read += 2;
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}
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return { read, written };
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}
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}
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