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1 /*
2  * Copyright (C) 2007, 2008, 2010 Apple Inc. All rights reserved.
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public License
15  * along with this library; see the file COPYING.LIB.  If not, write to
16  * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  *
19  */
20 
21 #ifndef SpaceSplitString_h
22 #define SpaceSplitString_h
23 
24 #include <wtf/OwnPtr.h>
25 #include <wtf/PassOwnPtr.h>
26 #include <wtf/Vector.h>
27 #include <wtf/text/AtomicString.h>
28 
29 namespace WebCore {
30 
31     class SpaceSplitStringData {
32         WTF_MAKE_NONCOPYABLE(SpaceSplitStringData); WTF_MAKE_FAST_ALLOCATED;
33     public:
SpaceSplitStringData(const String & string,bool shouldFoldCase)34         SpaceSplitStringData(const String& string, bool shouldFoldCase)
35             : m_string(string), m_shouldFoldCase(shouldFoldCase), m_createdVector(false)
36         {
37         }
38 
contains(const AtomicString & string)39         bool contains(const AtomicString& string)
40         {
41             ensureVector();
42             size_t size = m_vector.size();
43             for (size_t i = 0; i < size; ++i) {
44                 if (m_vector[i] == string)
45                     return true;
46             }
47             return false;
48         }
49 
50         bool containsAll(SpaceSplitStringData&);
51 
52         void add(const AtomicString&);
53         void remove(const AtomicString&);
54 
size()55         size_t size() { ensureVector(); return m_vector.size(); }
56         const AtomicString& operator[](size_t i) { ensureVector(); ASSERT(i < size()); return m_vector[i]; }
57 
58     private:
ensureVector()59         void ensureVector() { if (!m_createdVector) createVector(); }
60         void createVector();
61 
62         typedef Vector<AtomicString, 8> StringVector;
63         String m_string;
64         StringVector m_vector;
65         bool m_shouldFoldCase;
66         bool m_createdVector;
67     };
68 
69     class SpaceSplitString {
70     public:
SpaceSplitString()71         SpaceSplitString() { }
SpaceSplitString(const String & string,bool shouldFoldCase)72         SpaceSplitString(const String& string, bool shouldFoldCase) : m_data(adoptPtr(new SpaceSplitStringData(string, shouldFoldCase))) { }
73 
set(const String & string,bool shouldFoldCase)74         void set(const String& string, bool shouldFoldCase) { m_data = adoptPtr(new SpaceSplitStringData(string, shouldFoldCase)); }
clear()75         void clear() { m_data.clear(); }
76 
contains(const AtomicString & string)77         bool contains(const AtomicString& string) const { return m_data && m_data->contains(string); }
containsAll(const SpaceSplitString & names)78         bool containsAll(const SpaceSplitString& names) const { return !names.m_data || (m_data && m_data->containsAll(*names.m_data)); }
79         void add(const AtomicString&);
80         void remove(const AtomicString&);
81 
size()82         size_t size() const { return m_data ? m_data->size() : 0; }
isNull()83         bool isNull() const { return !m_data; }
84         const AtomicString& operator[](size_t i) const { ASSERT(i < size()); return (*m_data)[i]; }
85 
86     private:
87         OwnPtr<SpaceSplitStringData> m_data;
88     };
89 
90 } // namespace WebCore
91 
92 #endif // SpaceSplitString_h
93