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 #include <wtf/HashSet.h>

    27 

    28 typedef pair<unsigned, unsigned> UnicodeRange;

    29 typedef Vector<UnicodeRange> UnicodeRanges;

    30 

    31 namespace WebCore {

    32 

    33     class SVGPointList;

    34 

    35     bool parseNumber(const UChar*& ptr, const UChar* end, float& number, bool skip = true);

    36     bool parseNumberOptionalNumber(const String& s, float& h, float& v);

    37     bool 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

    41     inline bool isWhitespace(const UChar& c)

    42     {

    43         return (c == ' ' || c == '\t' || c == '\n' || c == '\r');

    44     }

    45 

    46     inline bool skipOptionalSpaces(const UChar*& ptr, const UChar* end)

    47     {

    48         while (ptr < end && isWhitespace(*ptr))

    49             ptr++;

    50         return ptr < end;

    51     }

    52 

    53     inline 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 

    66     bool pointsListFromSVGData(SVGPointList* pointsList, const String& points);

    67     Vector<String> parseDelimitedString(const String& input, const char seperator);

    68     bool parseKerningUnicodeString(const String& input, UnicodeRanges&, HashSet<String>& stringList);

    69     bool parseGlyphName(const String& input, HashSet<String>& values);

    70 

    71 } // namespace WebCore

    72 

    73 #endif // ENABLE(SVG)

    74 #endif // SVGParserUtilities_h