1/*
2 * Copyright (C) 2002, 2003 The Karbon Developers
3 * Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2013 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#ifndef SVGParserUtilities_h
23#define SVGParserUtilities_h
24
25#include "core/html/parser/HTMLParserIdioms.h"
26#include "core/svg/SVGTransform.h"
27#include "platform/text/ParserUtilities.h"
28#include "wtf/HashSet.h"
29
30typedef pair<unsigned, unsigned> UnicodeRange;
31typedef Vector<UnicodeRange> UnicodeRanges;
32
33namespace blink {
34
35class FloatPoint;
36
37enum WhitespaceMode {
38    DisallowWhitespace = 0,
39    AllowLeadingWhitespace = 0x1,
40    AllowTrailingWhitespace = 0x2,
41    AllowLeadingAndTrailingWhitespace = AllowLeadingWhitespace | AllowTrailingWhitespace
42};
43
44bool parseNumber(const LChar*& ptr, const LChar* end, float& number, WhitespaceMode = AllowLeadingAndTrailingWhitespace);
45bool parseNumber(const UChar*& ptr, const UChar* end, float& number, WhitespaceMode = AllowLeadingAndTrailingWhitespace);
46bool parseNumberOptionalNumber(const String& s, float& h, float& v);
47bool parseNumberOrPercentage(const String& s, float& number);
48bool parseArcFlag(const LChar*& ptr, const LChar* end, bool& flag);
49bool parseArcFlag(const UChar*& ptr, const UChar* end, bool& flag);
50
51template <typename CharType>
52bool parseFloatPoint(const CharType*& current, const CharType* end, FloatPoint&);
53template <typename CharType>
54bool parseFloatPoint2(const CharType*& current, const CharType* end, FloatPoint&, FloatPoint&);
55template <typename CharType>
56bool parseFloatPoint3(const CharType*& current, const CharType* end, FloatPoint&, FloatPoint&, FloatPoint&);
57
58template <typename CharType>
59inline bool skipOptionalSVGSpaces(const CharType*& ptr, const CharType* end)
60{
61    while (ptr < end && isHTMLSpace<CharType>(*ptr))
62        ptr++;
63    return ptr < end;
64}
65
66template <typename CharType>
67inline bool skipOptionalSVGSpacesOrDelimiter(const CharType*& ptr, const CharType* end, char delimiter = ',')
68{
69    if (ptr < end && !isHTMLSpace<CharType>(*ptr) && *ptr != delimiter)
70        return false;
71    if (skipOptionalSVGSpaces(ptr, end)) {
72        if (ptr < end && *ptr == delimiter) {
73            ptr++;
74            skipOptionalSVGSpaces(ptr, end);
75        }
76    }
77    return ptr < end;
78}
79
80#if ENABLE(SVG_FONTS)
81Vector<String> parseDelimitedString(const String& input, const char seperator);
82bool parseKerningUnicodeString(const String& input, UnicodeRanges&, HashSet<String>& stringList);
83bool parseGlyphName(const String& input, HashSet<String>& values);
84#endif
85
86template<typename CharType>
87bool parseAndSkipTransformType(const CharType*& ptr, const CharType* end, SVGTransformType&);
88SVGTransformType parseTransformType(const String&);
89
90} // namespace blink
91
92#endif // SVGParserUtilities_h
93