khtml/svg/SVGParserUtilities.h

   1 /*
   2    Copyright (C) 2002, 2003 The Karbon Developers
   3                  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
  27 namespace WebCore {
  28
  29     class Path;
  30     class SVGPointList;
  31     class SVGPathSegList;
  32
  33     bool parseNumber(const UChar*& ptr, const UChar* end, float& number, bool skip = true);
  34     bool parseNumberOptionalNumber(const String& s, float& h, float& v);
  35
  36     // SVG allows several different whitespace characters:
  37     // http://www.w3.org/TR/SVG/paths.html#PathDataBNF
  38     inline bool isWhitespace(const UChar& c)
  39     {
  40         return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
  41     }
  42
  43     inline bool skipOptionalSpaces(const UChar*& ptr, const UChar* end)
  44     {
  45         while (ptr < end && isWhitespace(*ptr))
  46             ptr++;
  47         return ptr < end;
  48     }
  49
  50     inline bool skipOptionalSpacesOrDelimiter(const UChar*& ptr, const UChar* end, UChar delimiter = ',')
  51     {
  52         if (ptr < end && !isWhitespace(*ptr) && *ptr != delimiter)
  53             return false;
  54         if (skipOptionalSpaces(ptr, end)) {
  55             if (ptr < end && *ptr == delimiter) {
  56                 ptr++;
  57                 skipOptionalSpaces(ptr, end);
  58             }
  59         }
  60         return ptr < end;
  61     }
  62
  63     bool pointsListFromSVGData(SVGPointList* pointsList, const String& points);
  64     bool pathFromSVGData(Path& path, const String& d);
  65     bool pathSegListFromSVGData(SVGPathSegList* pathSegList, const String& d, bool process = false);
  66     Vector<String> parseDelimitedString(const String& input, const char seperator);
  67
  68 } // namespace WebCore
  69
  70 #endif // ENABLE(SVG)
  71 #endif // SVGParserUtilities_h