| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ |
| #define NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ |
| |
| #include <stddef.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "base/strings/string_piece.h" |
| #include "net/base/net_export.h" |
| #include "net/websockets/websocket_extension.h" |
| |
| namespace net { |
| |
| class NET_EXPORT_PRIVATE WebSocketExtensionParser { |
| public: |
| WebSocketExtensionParser(); |
| ~WebSocketExtensionParser(); |
| |
| // Parses the given string as a Sec-WebSocket-Extensions header value. |
| // |
| // There must be no newline characters in the input. LWS-concatenation must |
| // have already been done before calling this method. |
| // |
| // Returns true if the method was successful (no syntax error was found). |
| bool Parse(const char* data, size_t size); |
| bool Parse(const std::string& data) { |
| return Parse(data.data(), data.size()); |
| } |
| |
| // Returns the result of the last Parse() method call. |
| const std::vector<WebSocketExtension>& extensions() const { |
| return extensions_; |
| } |
| |
| private: |
| WARN_UNUSED_RESULT bool Consume(char c); |
| WARN_UNUSED_RESULT bool ConsumeExtension(WebSocketExtension* extension); |
| WARN_UNUSED_RESULT bool ConsumeExtensionParameter( |
| WebSocketExtension::Parameter* parameter); |
| WARN_UNUSED_RESULT bool ConsumeToken(base::StringPiece* token); |
| WARN_UNUSED_RESULT bool ConsumeQuotedToken(std::string* token); |
| void ConsumeSpaces(); |
| WARN_UNUSED_RESULT bool Lookahead(char c); |
| WARN_UNUSED_RESULT bool ConsumeIfMatch(char c); |
| |
| // The current position in the input string. |
| const char* current_; |
| // The pointer of the end of the input string. |
| const char* end_; |
| std::vector<WebSocketExtension> extensions_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WebSocketExtensionParser); |
| }; |
| |
| } // namespace net |
| |
| #endif // NET_WEBSOCKETS_WEBSOCKET_EXTENSION_PARSER_H_ |