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/svg/SVGTransform.h"
26 #include "platform/text/ParserUtilities.h"
27 #include "wtf/HashSet.h"
28
29 typedef pair<unsigned, unsigned> UnicodeRange;
30 typedef Vector<UnicodeRange> UnicodeRanges;
31
32 namespace WebCore {
33
34 class FloatPoint;
35 class FloatRect;
36 class SVGPointList;
37 class SVGTransformList;
38
39 template <typename CharType>
40 bool parseSVGNumber(CharType* ptr, size_t length, double& number);
41 bool parseNumber(const LChar*& ptr, const LChar* end, float& number, bool skip = true);
42 bool parseNumber(const UChar*& ptr, const UChar* end, float& number, bool skip = true);
43 bool parseNumberFromString(const String&, float& number, bool skip = true);
44 bool parseNumberOptionalNumber(const String& s, float& h, float& v);
45 bool parseArcFlag(const LChar*& ptr, const LChar* end, bool& flag);
46 bool parseArcFlag(const UChar*& ptr, const UChar* end, bool& flag);
47 bool parseRect(const String&, FloatRect&);
48
49 template <typename CharType>
50 bool parseFloatPoint(const CharType*& current, const CharType* end, FloatPoint&);
51 template <typename CharType>
52 bool parseFloatPoint2(const CharType*& current, const CharType* end, FloatPoint&, FloatPoint&);
53 template <typename CharType>
54 bool parseFloatPoint3(const CharType*& current, const CharType* end, FloatPoint&, FloatPoint&, FloatPoint&);
55
56 // SVG allows several different whitespace characters:
57 // http://www.w3.org/TR/SVG/paths.html#PathDataBNF
58 template <typename CharType>
isSVGSpace(CharType c)59 inline bool isSVGSpace(CharType c)
60 {
61 return c == ' ' || c == '\t' || c == '\n' || c == '\r';
62 }
63
64 template <typename CharType>
skipOptionalSVGSpaces(const CharType * & ptr,const CharType * end)65 inline bool skipOptionalSVGSpaces(const CharType*& ptr, const CharType* end)
66 {
67 while (ptr < end && isSVGSpace(*ptr))
68 ptr++;
69 return ptr < end;
70 }
71
72 template <typename CharType>
73 inline bool skipOptionalSVGSpacesOrDelimiter(const CharType*& ptr, const CharType* end, char delimiter = ',')
74 {
75 if (ptr < end && !isSVGSpace(*ptr) && *ptr != delimiter)
76 return false;
77 if (skipOptionalSVGSpaces(ptr, end)) {
78 if (ptr < end && *ptr == delimiter) {
79 ptr++;
80 skipOptionalSVGSpaces(ptr, end);
81 }
82 }
83 return ptr < end;
84 }
85
86 bool pointsListFromSVGData(SVGPointList& pointsList, const String& points);
87 Vector<String> parseDelimitedString(const String& input, const char seperator);
88 bool parseKerningUnicodeString(const String& input, UnicodeRanges&, HashSet<String>& stringList);
89 bool parseGlyphName(const String& input, HashSet<String>& values);
90
91 enum TransformParsingMode {
92 ClearList,
93 DoNotClearList
94 };
95
96 bool parseTransformAttribute(SVGTransformList&, const LChar*& ptr, const LChar* end, TransformParsingMode = ClearList);
97 bool parseTransformAttribute(SVGTransformList&, const UChar*& ptr, const UChar* end, TransformParsingMode = ClearList);
98
99 bool parseTransformValue(unsigned type, const LChar*& ptr, const LChar* end, SVGTransform&);
100 bool parseTransformValue(unsigned type, const UChar*& ptr, const UChar* end, SVGTransform&);
101
102 SVGTransform::SVGTransformType parseTransformType(const String&);
103
104 } // namespace WebCore
105
106 #endif // SVGParserUtilities_h
107