[SVG2] Allow leading and trailing whitespace in svg attributes

Source/core/svg/SVGParserUtilities.h

 /*
  * Copyright (C) 2002, 2003 The Karbon Developers
  * Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef SVGParserUtilities_h
 #define SVGParserUtilities_h
 
+#include "core/html/parser/HTMLParserIdioms.h"
 #include "core/svg/SVGTransform.h"
 #include "platform/text/ParserUtilities.h"
 #include "wtf/HashSet.h"
 
 typedef pair<unsigned, unsigned> UnicodeRange;
 typedef Vector<UnicodeRange> UnicodeRanges;
 
 namespace WebCore {
 
 class FloatPoint;
 class FloatRect;
 class SVGPointList;
 
+enum WhitespaceMode {
+    DisallowWhitespace = 0,
+    AllowLeadingWhitespace = 0x1,
+    AllowTrailingWhitespace = 0x2,
+    AllowLeadingAndTrailingWhitespace = AllowLeadingWhitespace | AllowTrailingWhitespace
+};
+
 template <typename CharType>
 bool parseSVGNumber(CharType* ptr, size_t length, double& number);
-bool parseNumber(const LChar*& ptr, const LChar* end, float& number, bool skip = true);
-bool parseNumber(const UChar*& ptr, const UChar* end, float& number, bool skip = true);
+bool parseNumber(const LChar*& ptr, const LChar* end, float& number, WhitespaceMode = AllowLeadingAndTrailingWhitespace);
+bool parseNumber(const UChar*& ptr, const UChar* end, float& number, WhitespaceMode = AllowLeadingAndTrailingWhitespace);
 bool parseNumberOptionalNumber(const String& s, float& h, float& v);
+bool parseNumberOrPercentage(const String& s, float& number);
 bool parseArcFlag(const LChar*& ptr, const LChar* end, bool& flag);
 bool parseArcFlag(const UChar*& ptr, const UChar* end, bool& flag);
 
 template <typename CharType>
 bool parseFloatPoint(const CharType*& current, const CharType* end, FloatPoint&);
 template <typename CharType>
 bool parseFloatPoint2(const CharType*& current, const CharType* end, FloatPoint&, FloatPoint&);
 template <typename CharType>
 bool parseFloatPoint3(const CharType*& current, const CharType* end, FloatPoint&, FloatPoint&, FloatPoint&);
 
-// SVG allows several different whitespace characters:
-// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
-template <typename CharType>
-inline bool isSVGSpace(CharType c)
-{
-    return c == ' ' || c == '\t' || c == '\n' || c == '\r';
-}
-
 template <typename CharType>
 inline bool skipOptionalSVGSpaces(const CharType*& ptr, const CharType* end)
 {
-    while (ptr < end && isSVGSpace(*ptr))
+    while (ptr < end && isHTMLSpace<CharType>(*ptr))
         ptr++;
     return ptr < end;
 }
 
 template <typename CharType>
 inline bool skipOptionalSVGSpacesOrDelimiter(const CharType*& ptr, const CharType* end, char delimiter = ',')
 {
-    if (ptr < end && !isSVGSpace(*ptr) && *ptr != delimiter)
+    if (ptr < end && !isHTMLSpace<CharType>(*ptr) && *ptr != delimiter)
         return false;
     if (skipOptionalSVGSpaces(ptr, end)) {
         if (ptr < end && *ptr == delimiter) {
             ptr++;
             skipOptionalSVGSpaces(ptr, end);
         }
     }
     return ptr < end;
 }
 
 Vector<String> parseDelimitedString(const String& input, const char seperator);
 bool parseKerningUnicodeString(const String& input, UnicodeRanges&, HashSet<String>& stringList);
 bool parseGlyphName(const String& input, HashSet<String>& values);
 
 template<typename CharType>
 bool parseAndSkipTransformType(const CharType*& ptr, const CharType* end, SVGTransformType&);
 SVGTransformType parseTransformType(const String&);
 
 } // namespace WebCore
 
 #endif // SVGParserUtilities_h