WebCore/dom/SpaceSplitString.cpp

   1 /*
   2  * Copyright (C) 2007 David Smith (catfish.man@gmail.com)
   3  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
   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., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "config.h"
  22 #include "SpaceSplitString.h"
  23
  24 #include <wtf/ASCIICType.h>
  25
  26 using namespace WTF;
  27
  28 namespace WebCore {
  29
  30 static bool hasNonASCIIOrUpper(const String& string)
  31 {
  32     const UChar* characters = string.characters();
  33     unsigned length = string.length();
  34     bool hasUpper = false;
  35     UChar ored = 0;
  36     for (unsigned i = 0; i < length; i++) {
  37         UChar c = characters[i];
  38         hasUpper |= isASCIIUpper(c);
  39         ored |= c;
  40     }
  41     return hasUpper || (ored & ~0x7F);
  42 }
  43
  44 void SpaceSplitStringData::createVector()
  45 {
  46     ASSERT(!m_createdVector);
  47     ASSERT(m_vector.isEmpty());
  48
  49     if (m_shouldFoldCase && hasNonASCIIOrUpper(m_string))
  50         m_string = m_string.foldCase();
  51
  52     const UChar* characters = m_string.characters();
  53     unsigned length = m_string.length();
  54     unsigned start = 0;
  55     while (true) {
  56         while (start < length && isClassWhitespace(characters[start]))
  57             ++start;
  58         if (start >= length)
  59             break;
  60         unsigned end = start + 1;
  61         while (end < length && !isClassWhitespace(characters[end]))
  62             ++end;
  63
  64         m_vector.append(AtomicString(characters + start, end - start));
  65
  66         start = end + 1;
  67     }
  68
  69     m_string = String();
  70     m_createdVector = true;
  71 }
  72
  73 bool SpaceSplitStringData::containsAll(SpaceSplitStringData& other)
  74 {
  75     ensureVector();
  76     other.ensureVector();
  77     size_t thisSize = m_vector.size();
  78     size_t otherSize = other.m_vector.size();
  79     for (size_t i = 0; i < otherSize; ++i) {
  80         const AtomicString& name = other.m_vector[i];
  81         size_t j;
  82         for (j = 0; j < thisSize; ++j) {
  83             if (m_vector[j] == name)
  84                 break;
  85         }
  86         if (j == thisSize)
  87             return false;
  88     }
  89     return true;
  90 }
  91
  92 } // namespace WebCore