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SVGParserUtilities.h

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00001 /*
00002    Copyright (C) 2002, 2003 The Karbon Developers
00003                  2006, 2007 Rob Buis <buis@kde.org>
00004 
00005    This library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License as published by the Free Software Foundation; either
00008    version 2 of the License, or (at your option) any later version.
00009 
00010    This library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015    You should have received a copy of the GNU Library General Public License
00016    along with this library; see the file COPYING.LIB.  If not, write to
00017    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018    Boston, MA 02110-1301, USA.
00019 */
00020 
00021 #ifndef SVGParserUtilities_h
00022 #define SVGParserUtilities_h
00023 #if ENABLE(SVG)
00024 
00025 #include "ParserUtilities.h"
00026 
00027 namespace khtml {
00028     class Path;
00029 }
00030 
00031 namespace WebCore {
00032 
00033     typedef khtml::Path Path;
00034     class SVGPointList;
00035     class SVGPathSegList;
00036 
00037     bool parseNumber(const UChar*& ptr, const UChar* end, float& number, bool skip = true);
00038     bool parseNumberOptionalNumber(const String& s, float& h, float& v);
00039 
00040     // SVG allows several different whitespace characters:
00041     // http://www.w3.org/TR/SVG/paths.html#PathDataBNF
00042     inline bool isWhitespace(const UChar& c)
00043     {
00044         return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
00045     }
00046 
00047     inline bool skipOptionalSpaces(const UChar*& ptr, const UChar* end)
00048     {
00049         while (ptr < end && isWhitespace(*ptr))
00050             ptr++;
00051         return ptr < end;
00052     }
00053 
00054     inline bool skipOptionalSpacesOrDelimiter(const UChar*& ptr, const UChar* end, UChar delimiter = ',')
00055     {
00056         if (ptr < end && !isWhitespace(*ptr) && *ptr != delimiter)
00057             return false;
00058         if (skipOptionalSpaces(ptr, end)) {
00059             if (ptr < end && *ptr == delimiter) {
00060                 ptr++;
00061                 skipOptionalSpaces(ptr, end);
00062             }
00063         }
00064         return ptr < end;
00065     }
00066 
00067     bool pointsListFromSVGData(SVGPointList* pointsList, const String& points);
00068     bool pathFromSVGData(Path& path, const String& d);
00069     bool pathSegListFromSVGData(SVGPathSegList* pathSegList, const String& d, bool process = false);
00070     Vector<String> parseDelimitedString(const String& input, const char separator);
00071 
00072 } // namespace WebCore
00073 
00074 #endif // ENABLE(SVG)
00075 #endif // SVGParserUtilities_h

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