90 lines
3.7 KiB
C++
90 lines
3.7 KiB
C++
/*
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* Copyright (C) 2004-2017 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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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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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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#pragma once
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#include <pal/text/UnencodableHandling.h>
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#include <wtf/URL.h>
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#include <wtf/text/StringView.h>
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namespace WebCore {
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enum class NFCNormalize : bool { No, Yes };
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class TextEncoding : public WTF::URLTextEncoding {
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public:
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TextEncoding() = default;
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WEBCORE_EXPORT TextEncoding(const char* name);
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WEBCORE_EXPORT TextEncoding(const String& name);
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bool isValid() const { return m_name; }
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const char* name() const { return m_name; }
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WEBCORE_EXPORT const char* domName() const; // name exposed via DOM
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bool usesVisualOrdering() const;
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bool isJapanese() const;
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const TextEncoding& closestByteBasedEquivalent() const;
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const TextEncoding& encodingForFormSubmissionOrURLParsing() const;
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WEBCORE_EXPORT String decode(const char*, size_t length, bool stopOnError, bool& sawError) const;
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String decode(const char*, size_t length) const;
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String decode(const uint8_t* data, size_t length) const { return decode(reinterpret_cast<const char*>(data), length); }
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WEBCORE_EXPORT Vector<uint8_t> encode(StringView, UnencodableHandling, NFCNormalize = NFCNormalize::Yes) const;
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Vector<uint8_t> encodeForURLParsing(StringView string) const final { return encode(string, UnencodableHandling::URLEncodedEntities, NFCNormalize::No); }
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UChar backslashAsCurrencySymbol() const;
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bool isByteBasedEncoding() const { return !isNonByteBasedEncoding(); }
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private:
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bool isNonByteBasedEncoding() const;
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bool isUTF7Encoding() const;
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const char* m_name { nullptr };
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UChar m_backslashAsCurrencySymbol;
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};
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inline bool operator==(const TextEncoding& a, const TextEncoding& b) { return a.name() == b.name(); }
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inline bool operator!=(const TextEncoding& a, const TextEncoding& b) { return a.name() != b.name(); }
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const TextEncoding& ASCIIEncoding();
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const TextEncoding& Latin1Encoding();
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const TextEncoding& UTF16BigEndianEncoding();
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const TextEncoding& UTF16LittleEndianEncoding();
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WEBCORE_EXPORT const TextEncoding& UTF8Encoding();
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WEBCORE_EXPORT const TextEncoding& WindowsLatin1Encoding();
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// Unescapes the given string using URL escaping rules.
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// DANGER: If the URL has "%00" in it,
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// the resulting string will have embedded null characters!
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WEBCORE_EXPORT String decodeURLEscapeSequences(StringView, const TextEncoding& = UTF8Encoding());
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inline String TextEncoding::decode(const char* characters, size_t length) const
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{
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bool ignored;
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return decode(characters, length, false, ignored);
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}
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} // namespace WebCore
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