1 /*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "LevelDBIterator.h"
28
29 #if ENABLE(LEVELDB)
30
31 #include <leveldb/iterator.h>
32 #include <leveldb/slice.h>
33 #include <wtf/text/CString.h>
34 #include <wtf/text/WTFString.h>
35
36 namespace WebCore {
37
~LevelDBIterator()38 LevelDBIterator::~LevelDBIterator()
39 {
40 }
41
LevelDBIterator(leveldb::Iterator * it)42 LevelDBIterator::LevelDBIterator(leveldb::Iterator* it)
43 : m_iterator(it)
44 {
45 }
46
makeSlice(const Vector<char> & value)47 static leveldb::Slice makeSlice(const Vector<char>& value)
48 {
49 return leveldb::Slice(value.data(), value.size());
50 }
51
makeLevelDBSlice(leveldb::Slice s)52 static LevelDBSlice makeLevelDBSlice(leveldb::Slice s)
53 {
54 return LevelDBSlice(s.data(), s.data() + s.size());
55 }
56
isValid() const57 bool LevelDBIterator::isValid() const
58 {
59 return m_iterator->Valid();
60 }
61
seekToLast()62 void LevelDBIterator::seekToLast()
63 {
64 m_iterator->SeekToLast();
65 }
66
seek(const Vector<char> & target)67 void LevelDBIterator::seek(const Vector<char>& target)
68 {
69 m_iterator->Seek(makeSlice(target));
70 }
71
next()72 void LevelDBIterator::next()
73 {
74 m_iterator->Next();
75 }
76
prev()77 void LevelDBIterator::prev()
78 {
79 m_iterator->Prev();
80 }
81
key() const82 LevelDBSlice LevelDBIterator::key() const
83 {
84 return makeLevelDBSlice(m_iterator->key());
85 }
86
value() const87 LevelDBSlice LevelDBIterator::value() const
88 {
89 return makeLevelDBSlice(m_iterator->value());
90 }
91
92 } // namespace WebCore
93
94 #endif // ENABLE(LEVELDB)
95