1/*
2 * Copyright (C) 2012 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#pragma once
32
33#include <wtf/HashMap.h>
34#include <wtf/text/StringHash.h>
35#include <wtf/text/WTFString.h>
36
37namespace WebCore {
38
39class WebSocketExtensionParser {
40public:
41 WebSocketExtensionParser(const char* start, const char* end)
42 : m_current(start)
43 , m_end(end)
44 {
45 }
46 bool finished();
47 bool parsedSuccessfully();
48 bool parseExtension(String& extensionToken, HashMap<String, String>& parameters);
49
50private:
51 const String& currentToken() { return m_currentToken; }
52
53 // The following member functions basically follow the grammar defined
54 // in Section 2.2 of RFC 2616.
55 bool consumeToken();
56 bool consumeQuotedString();
57 bool consumeQuotedStringOrToken();
58 bool consumeCharacter(char);
59
60 void skipSpaces();
61
62 const char* m_current;
63 const char* m_end;
64 String m_currentToken;
65};
66
67} // namespace WebCore
68