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PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
33 lines
981 B
C++
33 lines
981 B
C++
// Copyright 2022 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "test/unittests/parser/unicode-helpers.h"
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#include "src/strings/unicode-inl.h"
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int Ucs2CharLength(unibrow::uchar c) {
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if (c == unibrow::Utf8::kIncomplete || c == unibrow::Utf8::kBufferEmpty) {
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return 0;
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} else if (c < 0xFFFF) {
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return 1;
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} else {
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return 2;
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}
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}
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int Utf8LengthHelper(const char* s) {
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unibrow::Utf8::Utf8IncrementalBuffer buffer(unibrow::Utf8::kBufferEmpty);
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unibrow::Utf8::State state = unibrow::Utf8::State::kAccept;
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int length = 0;
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const uint8_t* c = reinterpret_cast<const uint8_t*>(s);
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while (*c != '\0') {
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unibrow::uchar tmp = unibrow::Utf8::ValueOfIncremental(&c, &state, &buffer);
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length += Ucs2CharLength(tmp);
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}
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unibrow::uchar tmp = unibrow::Utf8::ValueOfIncrementalFinish(&state);
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length += Ucs2CharLength(tmp);
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return length;
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}
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