1/*
2 * Copyright (C) 2002, 2003 The Karbon Developers
3 * Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#ifndef SVGParserUtilities_h
22#define SVGParserUtilities_h
23#if ENABLE(SVG)
24
25#include "ParserUtilities.h"
26#include <wtf/HashSet.h>
27
28typedef pair<unsigned, unsigned> UnicodeRange;
29typedef Vector<UnicodeRange> UnicodeRanges;
30
31namespace WebCore {
32
33class SVGPointList;
34
35bool parseNumber(const UChar*& ptr, const UChar* end, float& number, bool skip = true);
36bool parseNumberOptionalNumber(const String& s, float& h, float& v);
37bool parseArcFlag(const UChar*& ptr, const UChar* end, bool& flag);
38
39// SVG allows several different whitespace characters:
40// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
41inline bool isWhitespace(const UChar& c)
42{
43    return c == ' ' || c == '\t' || c == '\n' || c == '\r';
44}
45
46inline bool skipOptionalSpaces(const UChar*& ptr, const UChar* end)
47{
48    while (ptr < end && isWhitespace(*ptr))
49        ptr++;
50    return ptr < end;
51}
52
53inline bool skipOptionalSpacesOrDelimiter(const UChar*& ptr, const UChar* end, UChar delimiter = ',')
54{
55    if (ptr < end && !isWhitespace(*ptr) && *ptr != delimiter)
56        return false;
57    if (skipOptionalSpaces(ptr, end)) {
58        if (ptr < end && *ptr == delimiter) {
59            ptr++;
60            skipOptionalSpaces(ptr, end);
61        }
62    }
63    return ptr < end;
64}
65
66bool pointsListFromSVGData(SVGPointList& pointsList, const String& points);
67Vector<String> parseDelimitedString(const String& input, const char seperator);
68bool parseKerningUnicodeString(const String& input, UnicodeRanges&, HashSet<String>& stringList);
69bool parseGlyphName(const String& input, HashSet<String>& values);
70
71} // namespace WebCore
72
73#endif // ENABLE(SVG)
74#endif // SVGParserUtilities_h
75