110 lines
3.9 KiB
C++
110 lines
3.9 KiB
C++
/*
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* Copyright (C) 2002, 2003 The Karbon Developers
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* Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include "ParsingUtilities.h"
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#include <wtf/Forward.h>
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typedef std::pair<UChar32, UChar32> UnicodeRange;
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typedef Vector<UnicodeRange> UnicodeRanges;
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namespace WebCore {
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class FloatPoint;
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class FloatRect;
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enum class SuffixSkippingPolicy {
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DontSkip,
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Skip
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};
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std::optional<float> parseNumber(StringParsingBuffer<LChar>&, SuffixSkippingPolicy = SuffixSkippingPolicy::Skip);
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std::optional<float> parseNumber(StringParsingBuffer<UChar>&, SuffixSkippingPolicy = SuffixSkippingPolicy::Skip);
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std::optional<float> parseNumber(const StringView&, SuffixSkippingPolicy = SuffixSkippingPolicy::Skip);
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std::optional<std::pair<float, float>> parseNumberOptionalNumber(const StringView&);
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std::optional<bool> parseArcFlag(StringParsingBuffer<LChar>&);
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std::optional<bool> parseArcFlag(StringParsingBuffer<UChar>&);
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std::optional<FloatPoint> parsePoint(const StringView&);
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std::optional<FloatRect> parseRect(const StringView&);
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std::optional<FloatPoint> parseFloatPoint(StringParsingBuffer<LChar>&);
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std::optional<FloatPoint> parseFloatPoint(StringParsingBuffer<UChar>&);
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std::optional<std::pair<UnicodeRanges, HashSet<String>>> parseKerningUnicodeString(const StringView&);
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std::optional<HashSet<String>> parseGlyphName(const StringView&);
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// SVG allows several different whitespace characters:
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// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
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template<typename CharacterType> constexpr bool isSVGSpace(CharacterType c)
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{
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return c == ' ' || c == '\t' || c == '\n' || c == '\r';
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}
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template<typename CharacterType> constexpr bool isSVGSpaceOrComma(CharacterType c)
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{
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return isSVGSpace(c) || c == ',';
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}
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template<typename CharacterType> constexpr bool skipOptionalSVGSpaces(const CharacterType*& ptr, const CharacterType* end)
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{
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skipWhile<isSVGSpace>(ptr, end);
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return ptr < end;
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}
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template<typename CharacterType> constexpr bool skipOptionalSVGSpaces(StringParsingBuffer<CharacterType>& characters)
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{
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skipWhile<isSVGSpace>(characters);
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return characters.hasCharactersRemaining();
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}
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template<typename CharacterType> constexpr bool skipOptionalSVGSpacesOrDelimiter(const CharacterType*& ptr, const CharacterType* end, char delimiter = ',')
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{
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if (ptr < end && !isSVGSpace(*ptr) && *ptr != delimiter)
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return false;
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if (skipOptionalSVGSpaces(ptr, end)) {
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if (ptr < end && *ptr == delimiter) {
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ptr++;
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skipOptionalSVGSpaces(ptr, end);
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}
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}
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return ptr < end;
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}
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template<typename CharacterType> constexpr bool skipOptionalSVGSpacesOrDelimiter(StringParsingBuffer<CharacterType>& characters, char delimiter = ',')
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{
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if (characters.hasCharactersRemaining() && !isSVGSpace(*characters) && *characters != delimiter)
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return false;
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if (skipOptionalSVGSpaces(characters)) {
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if (characters.hasCharactersRemaining() && *characters == delimiter) {
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characters++;
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skipOptionalSVGSpaces(characters);
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}
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}
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return characters.hasCharactersRemaining();
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}
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} // namespace WebCore
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