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