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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ | 5 #ifndef NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ |
6 #define NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ | 6 #define NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/strings/string_piece.h" | 10 #include "base/strings/string_piece.h" |
11 #include "net/base/net_export.h" | 11 #include "net/base/net_export.h" |
12 #include "net/websockets/websocket_extension.h" | 12 #include "net/websockets/websocket_extension.h" |
13 | 13 |
14 namespace net { | 14 namespace net { |
15 | 15 |
16 class NET_EXPORT_PRIVATE WebSocketExtensionParser { | 16 class NET_EXPORT_PRIVATE WebSocketExtensionParser { |
17 public: | 17 public: |
18 WebSocketExtensionParser(); | 18 WebSocketExtensionParser(); |
19 ~WebSocketExtensionParser(); | 19 ~WebSocketExtensionParser(); |
20 | 20 |
21 // Parses the given string as a WebSocket extension header value. | 21 // Parses the given string as a WebSocket extension header value. |
22 // This parser assumes some preprocesses are made. | 22 // This parser assumes some preprocesses are made. |
23 // - The parser parses single extension at a time. This means that | 23 // - The parser parses single extension at a time. This means that |
24 // the parser parses |extension| in RFC6455 9.1, not |extension-list|. | 24 // the parser parses |extension| in RFC6455 9.1, not |extension-list|. |
25 // - There is no newline characters in the input. LWS-concatenation must | 25 // - There is no newline characters in the input. LWS-concatenation must |
26 // have already been done. | 26 // have already been done. |
27 void Parse(const char* data, size_t size); | 27 void Parse(const char* data, size_t size); |
28 void Parse(const std::string& data) { | 28 void Parse(const std::string& data) { Parse(data.data(), data.size()); } |
29 Parse(data.data(), data.size()); | |
30 } | |
31 | 29 |
32 bool has_error() const { return has_error_; } | 30 bool has_error() const { return has_error_; } |
33 const WebSocketExtension& extension() const { return extension_; } | 31 const WebSocketExtension& extension() const { return extension_; } |
34 | 32 |
35 private: | 33 private: |
36 void Consume(char c); | 34 void Consume(char c); |
37 void ConsumeExtension(WebSocketExtension* extension); | 35 void ConsumeExtension(WebSocketExtension* extension); |
38 void ConsumeExtensionParameter(WebSocketExtension::Parameter* parameter); | 36 void ConsumeExtensionParameter(WebSocketExtension::Parameter* parameter); |
39 void ConsumeToken(base::StringPiece* token); | 37 void ConsumeToken(base::StringPiece* token); |
40 void ConsumeQuotedToken(std::string* token); | 38 void ConsumeQuotedToken(std::string* token); |
41 void ConsumeSpaces(); | 39 void ConsumeSpaces(); |
42 bool Lookahead(char c); | 40 bool Lookahead(char c); |
43 bool ConsumeIfMatch(char c); | 41 bool ConsumeIfMatch(char c); |
44 size_t UnconsumedBytes() const { return end_ - current_; } | 42 size_t UnconsumedBytes() const { return end_ - current_; } |
45 | 43 |
46 static bool IsControl(char c); | 44 static bool IsControl(char c); |
47 static bool IsSeparator(char c); | 45 static bool IsSeparator(char c); |
48 | 46 |
49 const char* current_; | 47 const char* current_; |
50 const char* end_; | 48 const char* end_; |
51 bool has_error_; | 49 bool has_error_; |
52 WebSocketExtension extension_; | 50 WebSocketExtension extension_; |
53 | 51 |
54 DISALLOW_COPY_AND_ASSIGN(WebSocketExtensionParser); | 52 DISALLOW_COPY_AND_ASSIGN(WebSocketExtensionParser); |
55 }; | 53 }; |
56 | 54 |
57 } // namespace net | 55 } // namespace net |
58 | 56 |
59 #endif // NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ | 57 #endif // NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ |
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