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 "ParserUtilities.h"
26#include <wtf/HashSet.h>
27
28typedef std::pair<unsigned, unsigned> UnicodeRange;
29typedef Vector<UnicodeRange> UnicodeRanges;
30
31namespace WebCore {
32
33class FloatPoint;
34class FloatRect;
35class SVGPointList;
36
37template <typename CharacterType>
38bool parseSVGNumber(CharacterType* ptr, size_t length, double& number);
39bool parseNumber(const LChar*& ptr, const LChar* end, float& number, bool skip = true);
40bool parseNumber(const UChar*& ptr, const UChar* end, float& number, bool skip = true);
41bool parseNumberFromString(const String&, float& number, bool skip = true);
42bool parseNumberOptionalNumber(const String& s, float& h, float& v);
43bool parseArcFlag(const LChar*& ptr, const LChar* end, bool& flag);
44bool parseArcFlag(const UChar*& ptr, const UChar* end, bool& flag);
45bool parseRect(const String&, FloatRect&);
46
47template <typename CharacterType>
48bool parseFloatPoint(const CharacterType*& current, const CharacterType* end, FloatPoint&);
49template <typename CharacterType>
50bool parseFloatPoint2(const CharacterType*& current, const CharacterType* end, FloatPoint&, FloatPoint&);
51template <typename CharacterType>
52bool parseFloatPoint3(const CharacterType*& current, const CharacterType* end, FloatPoint&, FloatPoint&, FloatPoint&);
53
54// SVG allows several different whitespace characters:
55// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
56template <typename CharacterType>
57inline bool isSVGSpace(CharacterType c)
58{
59    return c == ' ' || c == '\t' || c == '\n' || c == '\r';
60}
61
62template <typename CharacterType>
63inline bool skipOptionalSVGSpaces(const CharacterType*& ptr, const CharacterType* end)
64{
65    while (ptr < end && isSVGSpace(*ptr))
66        ptr++;
67    return ptr < end;
68}
69
70template <typename CharacterType>
71inline bool skipOptionalSVGSpacesOrDelimiter(const CharacterType*& ptr, const CharacterType* end, char delimiter = ',')
72{
73    if (ptr < end && !isSVGSpace(*ptr) && *ptr != delimiter)
74        return false;
75    if (skipOptionalSVGSpaces(ptr, end)) {
76        if (ptr < end && *ptr == delimiter) {
77            ptr++;
78            skipOptionalSVGSpaces(ptr, end);
79        }
80    }
81    return ptr < end;
82}
83
84bool pointsListFromSVGData(SVGPointList& pointsList, const String& points);
85Vector<String> parseDelimitedString(const String& input, const char seperator);
86bool parseKerningUnicodeString(const String& input, UnicodeRanges&, HashSet<String>& stringList);
87bool parseGlyphName(const String& input, HashSet<String>& values);
88
89} // namespace WebCore
90
91#endif // SVGParserUtilities_h
92