third_party/WebKit/Source/core/svg/SVGParserUtilities.h

   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/html/parser/HTMLParserIdioms.h"
  26 #include "core/svg/SVGTransform.h"
  27 #include "platform/text/ParserUtilities.h"
  28 #include "wtf/HashSet.h"
  29
  30 typedef pair<unsigned, unsigned> UnicodeRange;
  31 typedef Vector<UnicodeRange> UnicodeRanges;
  32
  33 namespace blink {
  34
  35 class FloatPoint;
  36
  37 enum WhitespaceMode {
  38     DisallowWhitespace = 0,
  39     AllowLeadingWhitespace = 0x1,
  40     AllowTrailingWhitespace = 0x2,
  41     AllowLeadingAndTrailingWhitespace = AllowLeadingWhitespace | AllowTrailingWhitespace
  42 };
  43
  44 bool parseNumber(const LChar*& ptr, const LChar* end, float& number, WhitespaceMode = AllowLeadingAndTrailingWhitespace);
  45 bool parseNumber(const UChar*& ptr, const UChar* end, float& number, WhitespaceMode = AllowLeadingAndTrailingWhitespace);
  46 bool parseNumberOptionalNumber(const String& s, float& h, float& v);
  47 bool parseNumberOrPercentage(const String& s, float& number);
  48 bool parseArcFlag(const LChar*& ptr, const LChar* end, bool& flag);
  49 bool parseArcFlag(const UChar*& ptr, const UChar* end, bool& flag);
  50
  51 template <typename CharType>
  52 inline bool skipOptionalSVGSpaces(const CharType*& ptr, const CharType* end)
  53 {
  54     while (ptr < end && isHTMLSpace<CharType>(*ptr))
  55         ptr++;
  56     return ptr < end;
  57 }
  58
  59 template <typename CharType>
  60 inline bool skipOptionalSVGSpacesOrDelimiter(const CharType*& ptr, const CharType* end, char delimiter = ',')
  61 {
  62     if (ptr < end && !isHTMLSpace<CharType>(*ptr) && *ptr != delimiter)
  63         return false;
  64     if (skipOptionalSVGSpaces(ptr, end)) {
  65         if (ptr < end && *ptr == delimiter) {
  66             ptr++;
  67             skipOptionalSVGSpaces(ptr, end);
  68         }
  69     }
  70     return ptr < end;
  71 }
  72
  73 template<typename CharType>
  74 bool parseAndSkipTransformType(const CharType*& ptr, const CharType* end, SVGTransformType&);
  75 SVGTransformType parseTransformType(const String&);
  76
  77 } // namespace blink
  78
  79 #endif // SVGParserUtilities_h